Prof. Dr. Nilgün Turhan, MD OB/GYN - IVF & Infertility

Prof. Dr. Nilgün Turhan is an IVF and infertility specialist in Istanbul with 35+ years of clinical and academic experience. She provides personalized IVF treatment for low AMH, poor ovarian response, failed IVF cycles, PCOS and advanced reproductive age.

Prof. Dr. Nilgün Turhan, MD OB/GYN – IVF & Infertility Specialist in Istanbul

Prof. Dr. Nilgün Turhan is a Professor of Obstetrics and Gynecology and an IVF and infertility specialist based in Istanbul, Turkey, with more than 35 years of clinical, academic and scientific experience.

She specialises in IVF, ICSI, infertility, reproductive endocrinology, diminished ovarian reserve, poor ovarian response, PCOS, endometriosis, recurrent implantation failure, recurrent pregnancy loss, reproductive surgery and fertility treatment at advanced reproductive age.

Prof. Turhan graduated from Ankara University Faculty of Medicine in 1983 and completed her Obstetrics and Gynecology specialist training at Zekai Tahir Burak Women’s Health Training and Research Hospital. She received international training in Reproductive Endocrinology, Infertility and IVF at the University of Modena, Italy, in 1990–1991.

She became Associate Professor in 1994 and Professor of Obstetrics and Gynecology in 2000. During her university career, she held senior academic positions including Department Chair, IVF Center Director, Vice Dean, Director of an Institute of Health Sciences and Head of a Division of Perinatology.

Prof. Turhan currently treats patients in Istanbul, including international patients travelling from the United Kingdom, Europe, the United States, Canada and other countries for fertility evaluation and IVF treatment.

ORCID: 0000-0002-9084-0630

Prof. Dr. Nilgün Turhan Academic Profile at a Glance

Prof. Dr. Nilgün Turhan Academic Career

1977–1983 — Medical Education

Studied medicine at Ankara University Faculty of Medicine, graduating in 1983 and ranking among the top ten students of her graduating class.

1985–1989 — Obstetrics and Gynecology Residency

Completed specialist training in Obstetrics and Gynecology at Zekai Tahir Burak Women’s Health Training and Research Hospital, Ankara.

Her specialization thesis investigated the detection of Neisseria gonorrhoeae in women presenting with vaginal discharge.

1989–1990 — High-Risk Pregnancy and Perinatology

Worked in the High-Risk Pregnancy and Perinatology Unit at Zekai Tahir Burak Women’s Health Training and Research Hospital.

1990–1991 — University of Modena, Italy

Completed clinical and academic training in the Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, at the University of Modena, Italy, including IVF training.

1991–1993 — Reproductive Endocrinology and IVF

Returned to Zekai Tahir Burak Women’s Health Training and Research Hospital and worked in the Reproductive Endocrinology and IVF Department.

1994 — Associate Professor

Received the academic title of Associate Professor of Obstetrics and Gynecology.

1996–2001 — Fatih University

Joined Fatih University Faculty of Medicine, progressing to Professor and undertaking major academic and administrative responsibilities.

1997–2011 — Department Chair

Served as Chairman of the Department of Obstetrics and Gynecology at Fatih University Faculty of Medicine.

2000 — Professor

Appointed Professor of Obstetrics and Gynecology.

2005–2011 — IVF Center Director

Served as Director and responsible physician of the IVF Center at Fatih University Faculty of Medicine.

2011–2015 — Muğla Sıtkı Koçman University

Served as Professor and Chairman of the Department of Obstetrics and Gynecology.

She also founded and directed the Perinatology Division and founded and supervised the Andrology Laboratory.

2012–2015 — Institute and Academic Leadership

Served as:

• Director, Institute of Health Sciences
• Educational Director, Department of Obstetrics and Gynecology
• Administrative Director, Department of Obstetrics and Gynecology
• Senate Member
• Member of the Scientific Research and Publication Ethics Board

2014–2015 — Head of Perinatology

Served as Head of the Division of Perinatology at Muğla Sıtkı Koçman University Faculty of Medicine.

2015–2016 — Liv Hospital Istanbul

Worked in Obstetrics and Gynecology and the IVF Center at Liv Hospital Istanbul.

Since 2016 — Istanbul

Continues clinical practice in Istanbul, focusing particularly on infertility, IVF, reproductive medicine, gynecology, and reproductive surgery.

International Training in Reproductive Medicine

Prof. Dr. Turhan’s international training in reproductive medicine began in Italy in the early 1990s.

During her fellowship at the University of Modena, she worked in Reproductive Endocrinology and Infertility and received IVF training.

Her early scientific publications from this period included studies of:

• IVF and embryo transfer
• Ovulation induction
• PCOS
• Male-factor infertility
• Cervical-factor infertility
• Unexplained infertility
• Immunological infertility
• Ovarian stimulation
• Reproductive endocrinology

Her first international publications included work published in Human Reproduction and the Journal of Assisted Reproduction and Genetics, demonstrating an early and sustained academic focus on reproductive medicine.

Areas of Clinical and Scientific Expertise

IVF and Assisted Reproductive Technology

Prof. Dr. Turhan has extensive academic and clinical experience in:

• IVF
• ICSI
• Ovulation induction
• Ovarian stimulation
• Intrauterine insemination
• Embryo transfer
• Oocyte and embryo cryopreservation
• Male-factor infertility
• Poor ovarian response
• Ovarian reserve
• Reproductive endocrinology

Infertility

Her scientific work has investigated both female and male factors contributing to infertility, as well as diagnostic and treatment strategies for unexplained infertility.

Polycystic Ovary Syndrome

PCOS has been one of the recurring themes of her research since the early 1990s.

Her publications have addressed:

• Ovarian morphology
• Androgen activity
• Hormonal profiles
• Ovulation induction
• Metabolic parameters
• Glucose tolerance
• Ovarian volume
• Follicle number
• PCOS and assisted reproduction

Ovarian Reserve and Poor Ovarian Response

Her research includes ovarian reserve, ovarian stimulation, and treatment outcomes in patients with diminished or poor ovarian response.

Reproductive Surgery

Her clinical and academic interests include:

• Laparoscopy
• Hysteroscopy
• Hysterosonography
• Gynecologic endoscopy
• Myomectomy
• Hysterectomy
• Urogynecologic surgery

Perinatology and Fetal Medicine

Her academic career has also included substantial work in:

• High-risk pregnancy
• Fetal growth
• Fetal ultrasound
• Prenatal diagnosis
• Preterm birth
• Gestational diabetes
• Hypertensive disorders of pregnancy
• Pregnancy complications
• Fetal medicine

Menopause and Women’s Health

Her publications and invited lectures include menopause, hormone replacement therapy, osteoporosis, climacteric symptoms, women’s health, and healthy aging.

Scientific Publication Record

Prof. Dr. Nilgün Turhan’s academic publication history extends from 1990 to 2020 in the academic CV currently available.

The CV lists 138 international peer-reviewed journal publications.

The international journal publication record includes research published in journals such as:

• Human Reproduction
• Fertility and Sterility
• Journal of Assisted Reproduction and Genetics
• European Journal of Obstetrics & Gynecology and Reproductive Biology
• Archives of Gynecology and Obstetrics
• Journal of Maternal-Fetal & Neonatal Medicine
• Gynecological Endocrinology
• Prenatal Diagnosis
• Maturitas
• International Journal of Gynecology & Obstetrics
• Ultrasound in Medicine and Biology
• Fetal Diagnosis and Therapy
• Acta Obstetricia et Gynecologica Scandinavica
• International Urogynecology Journal
• Journal of Minimally Invasive Gynecology

The publication record demonstrates a long-term research trajectory spanning reproductive medicine, infertility, PCOS, reproductive endocrinology, pregnancy, fetal medicine, menopause, and reproductive biology.

Selected Scientific Publications

IVF and Infertility

Turhan NO, Artini PG, D’Ambrogio G, Droghini F, Battaglia C, Genazzani AD, Volpe A, Genazzani AR.

A comparative study of three ovulation induction protocols in polycystic ovarian disease patients in an in vitro fertilization/embryo transfer program.

Journal of Assisted Reproduction and Genetics. 1993;10:15–20.

Verified links: PubMed: PMID 8499674 | DOI: 10.1007/BF01204435

Human Reproduction and Infertility

Turhan NO, Artini PG, D’Ambrogio G, Droghini F, Volpe A, Genazzani AR.

Studies on direct intraperitoneal insemination in the management of male factor, cervical factor, unexplained, and immunologic infertility.

Human Reproduction. 1992;7:66–71.

Verified links: PubMed: PMID 1551962 | DOI: 10.1093/oxfordjournals.humrep.a137561

PCOS

Turhan NO, Toppare MF, Seçkin NC, Dilmen G.

The predictive power of endocrine tests for the diagnosis of polycystic ovaries in women with oligoamenorrhea.

Gynecologic and Obstetric Investigation. 1999;48:183–186.

Menopause

Seçkin NC, Şener AB, Turhan NO, Gökmen O, Orhon E, Bulgurlu H.

The menopausal age, related factors, and climacteric symptoms in Turkish women.

Maturitas. 1998;30:37–40.

IVF and Poor Ovarian Response

Duvan CI, Berker B, Turhan NO, Satiroglu H.

Oral contraceptive pretreatment does not improve outcome in microdose gonadotrophin-releasing hormone agonist protocol among poor responder intracytoplasmic sperm injection patients.

Journal of Assisted Reproduction and Genetics. 2008;25:89–93.

Verified links: PubMed: PMID 18253823 | DOI: 10.1007/s10815-008-9203-8

Gestational Diabetes and PCOS

Turhan NO, Seçkin NC, Aybar F, İnegöl I.

Assessment of glucose tolerance and pregnancy outcome of polycystic ovary patients.

International Journal of Gynecology & Obstetrics. 2003;81:163–168.

Reproductive Endocrinology and PCOS

Kösüs N, Kösüs A, Kamalak Z, Hızlı D, Turhan NÖ.

Impact of adrenal versus ovarian androgen ratio on signs and symptoms of polycystic ovarian syndrome.

Gynecological Endocrinology. 2012;28:611–614.

IVF and Oxidative Stress

Pekel A, Gönenç A, Turhan NO, Kafalı H.

Changes of sFas and sFasL, oxidative stress markers in serum and follicular fluid of patients undergoing IVF.

Journal of Assisted Reproduction and Genetics. 2014.

Verified links: PubMed: PMID 25488202 | DOI: 10.1007/s10815-014-0396-8

Pregnancy and Hepcidin

Simavli S, Derbent AU, Uysal S, Turhan NÖ.

Hepcidin, iron status, and inflammation variables among healthy pregnant women in the Turkish population.

Journal of Maternal-Fetal & Neonatal Medicine. 2014;27:75–79.

Reproductive Biology and IVF

Khan HL, Bhatti S, Abbas S, Kaloglu C, Qurat-Ul-Ain Zahra S, Khan YL, Hassan Z, Turhan NÖ, Aydin HH.

Melatonin levels and microRNA (miRNA) relative expression profile in the follicular ambient microenvironment in patients undergoing in vitro fertilization process.

Journal of Assisted Reproduction and Genetics. 2020.

DOI: 10.1007/s10815-020-02010-2 | PubMed / PMC record

Scientific Research Themes Across Three Decades

Prof. Dr. Turhan’s publication history demonstrates an evolution of research interests while maintaining a consistent focus on reproductive medicine.

1990s

Primary research themes included:

• IVF
• Ovulation induction
• PCOS
• Reproductive endocrinology
• Male-factor infertility
• Ovarian stimulation
• Menopause

2000s

Research expanded into:

• IVF treatment outcomes
• Poor ovarian response
• Reproductive surgery
• Hysteroscopy
• Pregnancy complications
• Fetal medicine
• Perinatology
• Gestational diabetes
• Menopause and metabolic health

2010s and Later

Research increasingly included:

• Ovarian reserve
• IVF outcomes
• Oxidative stress
• Follicular fluid biology
• Reproductive biomarkers
• Molecular aspects of reproduction
• Melatonin and microRNA in IVF

This progression demonstrates continuity between clinical reproductive medicine and laboratory-based reproductive research.

Academic Awards

IJGO Prize Paper Award — Honorable Mention, 2002

Prof. Dr. Turhan received an International Journal of Gynecology & Obstetrics (IJGO) Prize Paper Award – Honorable Mention in 2002 for:

“Antepartum prophylactic transabdominal amnioinfusion in preterm pregnancies complicated by oligohydramnios.”

The award recognized this work as a Best Clinical Research Article from a Developing Country.

Academic Research Projects

Prof. Dr. Turhan has served as principal investigator of institutional research projects addressing:

• The role of oxidative stress in dysmenorrhea
• Effects of non-ionizing radiation on ovarian tissue apoptosis and ovarian reserve
• Maternal serum hepcidin levels and iron parameters in preterm and term pregnancies
• Anti-Müllerian hormone levels in polycystic ovary syndrome
• Effects of cigarette smoke and vitamin E on endometrial pinopod formation
• Hypnotherapy and recovery from hyperemesis gravidarum
• Maternal serum hepcidin levels as a predictor of preterm birth and adverse pregnancy outcomes

International Project

Prof. Dr. Turhan participated in the UNESCO/ILO-supported Health Promotion Project: Training of Trainers on Application of Science into Daily Life, conducted between 2000 and 2002.

She also participated in the creation of a network of women trainers for the development of women’s training in science and biotechnology in the Mediterranean basin, with activities in Turin, Italy.

Academic Teaching and Mentorship

Prof. Dr. Turhan has extensive experience in undergraduate and postgraduate medical education.

Her teaching has included:

• Reproductive physiology
• Reproductive endocrinology
• Fertilization
• Assisted reproductive technologies
• Menstrual cycle regulation
• Infertility
• Ovulation induction
• Endometriosis
• PCOS
• Menopause
• Fetal medicine
• High-risk pregnancy
• Prenatal diagnosis
• Gynecologic ultrasound
• Laparoscopy
• Hysteroscopy
• Gynecologic surgery

Her postgraduate teaching included advanced subjects in obstetrics, gynecology, reproductive medicine, urogynecology, and gynecologic surgery.

Supervision of Academic Theses

During her university career, Prof. Dr. Turhan supervised postgraduate medical research projects addressing:

• Hysteroscopy and hysterosonography
• Postmenopausal hormone therapy
• Isoflavones and menopause
• Levonorgestrel intrauterine systems
• Genistein and vascular biomarkers
• Oxidative stress in dysmenorrhea
• Non-ionizing radiation and ovarian reserve
• AMH in PCOS
• Cigarette smoke and endometrial pinopods
• Maternal hepcidin and adverse pregnancy outcomes
• Gynecologic cancer knowledge and attitudes
• Laparoscopic hysterectomy and surgical tissue trauma

Books and Book Chapters

Prof. Dr. Turhan has served as a book editor and contributed to academic books and chapters in reproductive medicine, obstetrics, and gynecology.

Book Editor

Jinekolojik ve Obstetrik Cerrahi Girişimlerin Komplikasyonlarının Yönetilmesi

Edited by Nilgün Turhan and Gökalp Öner.

Muğla Sıtkı Koçman University Publications, 2015.

Selected Book Chapters

Her book contributions include chapters on:

• Pregnancy endocrinology and fetal endocrinopathies
• Premature rupture of membranes
• Preterm labor and delivery
• Perimenopause and its treatment
• Ovarian reserve testing
• Hormone replacement therapy
• Menopause and osteoporosis
• Hormonal and surgical contraception
• Hysteroscopy complications
• Cervical insufficiency
• Breastfeeding
• Oxidative stress and female reproduction/assisted reproductive technologies

International Scientific Presentations

Prof. Dr. Turhan has presented research at international scientific meetings in Europe, North America, the Middle East, and other regions.

Her international presentations include scientific work presented at meetings of:

• European Society of Human Reproduction and Embryology (ESHRE)
• American Society for Reproductive Medicine (ASRM)
• World Congress on Human Reproduction
• Mediterranean Society for Reproductive Medicine
• Middle East Fertility Society
• International Congresses of Gynecology and Obstetrics
• International Congresses on Reproductive Medicine
• International Perinatal Medicine meetings

Her international scientific presentations began in the early 1990s and continued through the 2010s.

Invited International Speaker

Prof. Dr. Turhan has been invited as a speaker at international scientific meetings on subjects including:

• Reproductive health in HIV-positive couples
• Phytoestrogens and menopause
• Healthy aging
• Anti-aging medicine
• Surgical correction of intrauterine synechiae

These invitations include international reproductive health, menopause, and reproductive medicine congresses.

International Session Chair

She has also served as an invited session chair at international scientific meetings, including sessions addressing:

• Contraception
• Assisted reproductive technology
• Ovulation induction
• Cryobiology
• Embryology
• PCOS

Her session-chair activities included international meetings of reproductive medicine and gynecology between 2003 and 2011.

Scientific Journal Editorial and Peer-Review Activities

Prof. Dr. Turhan has served as an editor for:

• Turkish Journal of Medical Sciences

She has also served as a peer reviewer for international journals including:

• Journal of Assisted Reproduction and Genetics
• International Journal of Gynecology & Obstetrics
• Gynecologic Endocrinology
• Turkish Journal of Medical Sciences
• American Journal of Perinatology
• Journal of Perinatal Medicine
• Systems Biology in Reproductive Medicine
• European Journal of Obstetrics & Gynecology and Reproductive Biology
• Journal of Obstetrics and Gynaecology

This editorial and peer-review activity represents recognition of her scientific expertise by international medical journals.

Scientific Committees and Professional Organizations

Prof. Dr. Turhan has served in scientific and professional organizations including:

• Turkish Society of Obstetrics and Gynecology
• TSRM — Society for Reproductive Health and Infertility
• Society of Reproductive Medicine and Surgery
• Turkish Perinatology Society
• Anti-Aging Society

She was also a founding chair of the Muğla branch of the Turkish Society of Obstetrics and Gynecology and a founding member of the Anti-Aging Society.

She also served as a panelist on a TÜBİTAK BIDEB medical sciences panel.

Bibliometric Profile

• 3,288+ citations
• H-index: 30
• i10-index: 87
• H-index, last 5 years: 15
• i10-index, last 5 years: 29
• 1,005 citations received in the last 5 years

These bibliometric indicators are based on publicly available Google Scholar-derived data indexed by AD Scientific Index and may change as databases are updated. Citation counts and author metrics may differ between Google Scholar, Scopus, Web of Science, and ResearchGate.

AD Scientific Index – Nilgün Öztürk Turhan — Source used for the dated Google Scholar-derived citation, h-index, and i10-index figures.

Web of Science, Scopus and Academic Indexing

Prof. Dr. Turhan’s publication record includes articles indexed in major international bibliographic databases, including Web of Science and Scopus.

Examples of internationally indexed work include publications in reproductive medicine, PCOS, fetal medicine, pregnancy, and reproductive biology.

Database-specific author metrics are dynamic and should be verified directly within the relevant database.

For accurate author identification, the preferred academic identifier is:

ORCID – Prof. Dr. Nilgün Öztürk Turhan — Persistent researcher identifier: 0000-0002-9084-0630.

Author Name Variants

Prof. Dr. Turhan’s scientific publications may appear under several name formats, including:

• Nilgün Turhan
• Nilgün Öztürk Turhan
• Nilgün O. Turhan
• N. O. Turhan

These variants should be associated with the same academic author profile and ORCID identifier.

ORCID – Prof. Dr. Nilgün Öztürk Turhan — Persistent researcher identifier: 0000-0002-9084-0630.

International Conference Proceedings

The academic CV contains an extensive record of international scientific presentations and proceedings.

The subjects include IVF, ovulation induction, PCOS, infertility, reproductive endocrinology, menopause, fetal medicine, pregnancy complications, IUI, embryo morphology, and reproductive biology.

National Scientific Presentations

The CV also contains a substantial record of presentations at national scientific meetings, including meetings of the Turkish Society of Obstetrics and Gynecology, the Turkish Society for Reproductive Medicine, and other national specialty organizations.

Continuing Medical Education

Prof. Dr. Turhan has participated in numerous national and international postgraduate courses covering:

• Laparoscopy
• Hysteroscopy
• Reproductive endocrinology
• Infertility
• IVF
• Ovulation induction
• Gynecologic endoscopy
• Fetal medicine
• Ultrasonography
• Menopause
• Reproductive surgery
• Urogynecology
• Gynecologic microsurgery

Her international training and congress participation include ESHRE, ASRM, ACOG, World Congresses of Human Reproduction, and major reproductive medicine meetings.

Clinical Expertise

Prof. Dr. Turhan’s current clinical practice focuses particularly on:

• IVF and ICSI
• Infertility
• Low ovarian reserve
• Poor ovarian response
• PCOS
• Endometriosis
• Male-factor infertility
• Recurrent pregnancy loss
• Recurrent implantation failure
• Advanced reproductive age
• Hysteroscopy
• Laparoscopic gynecologic surgery
• Menopause
• Women’s health

Her approach combines detailed diagnostic evaluation with individualized treatment planning.

International Patients

Prof. Dr. Nilgün Turhan provides fertility assessment and IVF treatment for international patients travelling to Istanbul from the United Kingdom, Europe, the United States, Canada, and other countries.

IVF Treatment for International Patients

International patients may send previous fertility records, hormone tests, AMH results, semen analyses, ultrasound findings, and previous IVF treatment reports before travelling to Turkey. Whenever medically appropriate, this allows the initial fertility assessment and treatment strategy to be reviewed in advance and helps patients plan the time required in Istanbul.

IVF Treatment for Patients from the UK

Patients travelling from the United Kingdom may provide NHS or private fertility records before travelling to Istanbul. Previous IVF cycle reports, ovarian stimulation protocols, embryology reports, and relevant fertility investigations can be particularly useful when planning another treatment cycle.

IVF Treatment for Patients from the United States and Canada

Prof. Turhan evaluates patients travelling from the United States and Canada for IVF and fertility treatment in Istanbul. Existing medical records and previous fertility treatment results can be reviewed before travel to help determine what additional evaluation may be required.

IVF Treatment for Patients from Europe

Patients from European countries may provide previous fertility investigations and IVF records before travelling to Istanbul. Treatment planning is individualised according to age, ovarian reserve, reproductive history, semen parameters, and previous treatment outcomes.

Previous Failed IVF and Poor Ovarian Response

Prof. Turhan has clinical and academic experience in the evaluation of patients with previous unsuccessful fertility treatments, diminished ovarian reserve, and poor ovarian response. Treatment planning is individualised according to reproductive history, ovarian reserve, previous ovarian response, and other relevant clinical findings.

Academic Perspective

Prof. Dr. Turhan’s academic career combines four major areas:

Clinical Medicine

Long-term experience in Obstetrics and Gynecology, infertility, IVF, and reproductive medicine.

Scientific Research

A publication record extending across more than three decades, including 138 international journal publications listed in the academic CV.

Medical Education

Extensive undergraduate and postgraduate teaching and supervision of specialist research.

Academic Leadership

University department chairmanships, IVF center directorships, institute leadership, perinatology leadership, and scientific committee responsibilities.

Prof. Dr. Nilgün Turhan is a Professor of Obstetrics and Gynecology and a Reproductive Endocrinology and Infertility specialist with more than 35 years of clinical, academic, and scientific experience.

Complete International Publications in Peer-Reviewed Journals

1. Turhan NO, Artini PG, D'Ambrogio G, Droghini F, Battaglia C, Genazzani AD, Volpe A, Genazzani AR. A comparative study of three ovulation induction protocols in polycystic ovarian disease patients in an in vitro fertilization/embryo transfer program. J Assist Reprod Genet. 1993;10:15–20.
2. Turhan NO, Artini PG, D'Ambrogio G, Droghini F, Volpe A, Genazzani AR. Studies on direct intraperitoneal insemination in the management of male factor, cervical factor, unexplained and immunologic infertility. Hum Reprod. 1992;7:66–71.
3. Özakşit G, Turhan NO, Oral H, Doğu N, Gökmen O. Relationship between serum CA 125 levels, endometrial thickness and corpus luteum function in different stages of ovarian activity. J Endocrinol Invest. 1993;16:175–179.
4. Gülekli B, Turhan NO, Şenöz S, Kükner S, Oral H, Gökmen O. Endocrinological ultrasonographic and clinical findings in adolescent and adult polycystic ovary patients: a comparative study. Gynecol Endocrinol. 1993;7:273–277.
5. Gülekli B, Özakşit G, Turhan NO, Şenöz S, Oral H, Gökmen O. Tamoxifen: an alternative approach in resistant polycystic ovarian syndrome patients. JPMA. 1993;43:89–90.
6. Turhan NO, Şenöz S, Gülekli B, Özakşit G, Oral H, Gökmen O. Clinical and endocrine features of ultrasound-diagnosed polycystic ovary patients: the correlation between ovarian volume and androgen activity. JPMA. 1993;43:4–6.
7. Şenöz S, Özakşit G, Turhan NO, Gülekli B, Gökmen O. Lipid profiles in women with hirsutism and polycystic ovaries. Gynecol Endocrinol. 1994;8:33–37.
8. Kuscu E, Vicdan K, Turhan NO, Oguz S, Zorlu G, Gökmen O. The hormonal profile in ectopic pregnancies. J Pak Med Assoc. 1994;44:45–47.
9. Mungan T, Vicdan K, Yalçın H, Turhan NO. Thyroid function: fetal-maternal relationship at term. JPMA. 1994;44:104–106.
10. Turhan NO. Termination of pregnancy for maternal toxoplasmosis. (Yorum). Tr J Medical Sciences. 1994;21:213.
11. Turhan NO. Oral contraceptives and risk of breast cancer in women aged 20–54 years. J Medical Sciences. 1994;22:303–305.
12. Turhan NO. Randomized controlled trial of routine cervical examinations in pregnancy. Tr J Medical Sciences. 1994;22:303–305.
13. Turhan NO, Dilmen G, Seçkin N, Gökşin E. Initial appearance and resolution of ectopic pregnancy in transvaginal color Doppler. Tr J of Medical Sciences. 1995;23:155–156.
14. Dilmen G, Turhan NO, Toppare MF, Seçkin NC, Öztürk M, Gökşin E. Scapula length measurement for assessment of fetal growth and development. Ultrasound in Medicine and Biology. 1995;21:139–142.
15. Özmen Ş, Seçkin N, Turhan NO, Dilmen G, Dilmen U. Fetal methemoglobinemia: a cause of nonimmune hydrops fetalis. Am J Obstet Gynecol. 1995;173:232–233.
16. Şenöz S, Gülekli B, Turhan NO, Özakşit G, Odabaşi AR, Oral H, Özcan U, Gökmen O. Do the suppression criteria in GnRH-a cycles predict in vitro fertilization outcome? Gynecol Endocrinol. 1995;9:91–96.
17. Gökmen O, Seçkin NS, Şener AB, Turhan NO. Continuous versus sequential hormone replacement therapy in postmenopausal women. Tr J Medical Sciences. 1995;25:197–199.
18. Seçkin NC, Turhan NO, Özmen Ş, Öztürk M, Erdoğan M. Lipoprotein a levels in Turkish postmenopausal women: a preliminary study. Tr J of Medical Sciences. 1995;25:201–203.
19. Dilmen G, Toppare MF, Turhan NO, Öztürk M, İşik S. Transverse cerebellar diameter and transverse cerebellar diameter/abdominal circumference index for assessing fetal growth. Fetal Diagn Ther. 1996;11:50–56.
20. Dilmen G, Turhan NO, Seçkin NC. Transvaginal color Doppler assessment of the uteroplacental circulation in normal and abnormal pregnancies in the first trimester. Int J Gynecol Obstet. 1996;52:285–286.
21. Seçkin NC, Turhan NO, Özmen Ş, Ersan F, Avşar F, Üstün H. Routine colposcopic evaluation of patients with persistent inflammatory cellular changes on Pap smear. Int J Obstet Gynecol. 1997;59:25–29.
22. Seçkin NC, Turhan NO, Dilmen G. Ovulation induction and breast cancer. Gynecol Obstet Invest. 1998;45:144.
23. Seçkin NC, Şener AB, Turhan NO, Gökmen O, Orhon E, Bulgurlu H. The menopausal age, related factors, and climacteric symptoms in Turkish women. Maturitas. 1998;30:37–40.
24. Özmen Ş, Turhan NO, Seçkin. Gardnerella-associated vaginitis: comparison of three treatment modalities. Tr J Medical Sciences. 1998;28:171–173.
25. Turhan NO, Toppare MF, Seçkin NC, Dilmen G. The predictive power of endocrine tests for the diagnosis of polycystic ovaries in women with oligomenorrhea. Gynecol Obstet Invest. 1999;48:183–186.
26. Turhan NO, Karabulut A, Adam B. Maternal serum interleukin 6 levels in preterm labor: prediction of admission-to-delivery interval. J Perinat Med. 2000;28:133–140.
27. Turhan NO, Dilmen G, Üstün H. Benign cystic teratoma of the Douglas: case report. Eur J Obstet Gynecol Reprod Biol. 2000;93(2):213–214.
28. Alpay FB, Turhan NO. Intermittent versus continuous sertraline therapy in the treatment of premenstrual dysphoric disorders. Int J Fertil and Women’s Medicine. 2001;46:228–231.
29. Kopal Ş, Seçkin NC, Turhan NO. Acute uterine inversion due to a growing submucous myoma in an elderly woman: case report. Eur J Obstet Gynecol Reprod Biol. 2001;99:118–120.
30. Turhan NO, Atacan N. Antepartum prophylactic transabdominal amnioinfusion in preterm pregnancies complicated by. Int J Gynaecol Obstet. 2002;76:15–21.
31. Dilmen G, Köktener A, Turhan NO, Tez S. Growth of the fetal lens and orbit. Int J Gynaecol Obstet. 2002;76:267–271.
32. Dilmen G, Köktener A, Turhan NO, Tez S. Transvaginal sonography of the yolk sac. Ultrasound International. 2002;8:113–116.
33. Açıkgöz ZC, Turhan NO, Ghenberzadeh S, Ark E, Berkman E. Vajinal kültürlerin mikrobiyolojik açıdan retrospektif olarak değerlendirilmesi. Mikrobiyoloji Bülteni. 2002;36:2329.
34. Açikgöz ZC, Turhan NO, Gamberzade Ş, Ark E, Göçer S. Increasing the detection rate of Group B Streptococcal carriers by non-selective cervicovaginal culture accompanied with the selective vagino-anorectal one. Diagn Microbiol Infect Dis. 2003;46:69–71.
35. Turhan NO, Seçkin NC, Aybar F, Inegöl I. Assessment of glucose tolerance and pregnancy outcome of polycystic ovary patients. Int J Gynaecol Obstet. 2003;81:163–168.
36. Seçkin NC, Turhan NO, Kopal Ş, İnegöl İ. Acardiac twin: a misdiagnosed, mismanaged case. Eur J Obstet Gynecol Reprod Biol. 2003;107:212–213.
37. Seckin NC, İnegol İ, Turhan NO, Bavbek N, Kosar A. A life-threatening second trimester disseminated intravascular coagulopathy with protein S deficiency. Clin Appl Thromb Hemost. 2004;10:289–291.
38. Turhan NO. Myxoedematous coma in a laboring woman suggested a preeclamptic coma: a case report. Acta Obstet Gynecol Scand. 2004;83:1089–1091.
39. Turhan NO, Eren Ü, Seçkin NC. Second-trimester amniocentesis: five-year experience. Arch Gynecol Obstet. 2005;271:19–21.
40. Seçkin NC, İnegöl İ, Turhan NO, Nüket Bavbek. Diagnosis of Antiphospholipid Syndrome During the Diagnostic Work-up of Second Trimester Fetal Bradycardia. Clin Appl Thromb Hemost. 2005;11:231–233.
41. Tez S, Köktener A, Aksoy F, Turhan NO, Dilmen G. Ultrasound evaluation of the normal fetal pharynx. Early Hum Develop. 2005;81:629–633.
42. Turhan NO. Poor response—the devil is in the definition. Fertil Steril. 2006;86:777; author reply 777.
43. Turhan NO. Poor response—the devil is in the definition. Fertil Steril. 2006;85:e1; author reply e2.
44. Bayrak O, Cimentepe E, Inegol I, Atmaca AF, Duvan CI, Koc A, Turhan NO. Is single-dose fosfomycin trometamol a good alternative for asymptomatic bacteriuria in the second trimester of pregnancy? Int Urogynecol J Pelvic Floor Dysfunct. 2007;276:17–19.
45. Gumus II, Koktener A, Turhan NO. Perinatal outcomes of pregnancies with borderline amniotic fluid index. Arch Gynecol Obstet. 2007;276:17–19.
46. Atabey S, Duvan CI, Eren U, Turhan NO. Intrahepatic cholestasis and eclampsia: a case report. Hypertens Pregnancy. 2007;26:363–369.
47. Kafalı H, Aker A, Bayrak Ö, Turhan N. Urinary tract injury during cesarean section mimicking postpartum acute renal failure. The Internet Urology. 2007;5:1–5.
48. Gumus II, Sarifakioglu E, Uslu H, Turhan NO. Vulvodynia: case report and review of literature. Gynecol Obstet Invest. 2008;65:155–161.
49. Gumus II, Uslu H, Bavbek N, Turhan N. Multifactorial thrombophilia in a pregnancy: a case report. Clin Appl Thromb Hemost. 2008;14:112–115.
50. Duvan CI, Berker B, Turhan NO, Satiroglu H. Oral contraceptive pretreatment does not improve outcome in microdose gonadotrophin-releasing hormone agonist protocol among poor responder intracytoplasmic sperm injection patients. J Assist Reprod Genet. 2008;25:89–93.
51. Gumus II, Keskin EA, Kılıç E, Aker A, Kafalı H, Turhan NO. Diagnostic value of hysteroscopy and hysterosonography in endometrial abnormalities in asymptomatic postmenopausal women. Arch Gynecol Obstet. 2008;278:241–244.
52. Kafali H, Duvan CI, Bayrak R, Turhan NO. Vulvar pilonidal sinuses: treatment of a rare cause of vulvar pain. Arch Gynecol Obstet. 2008;278:487–488.
53. Turhan NO, Bolkan F, Duvan Cİ, Ardıcoğlu Y. The effect of isoflavones on bone mass and bone remodelling markers in postmenopausal women. Turk J Med Sci. 2008;38:145–152.
54. Turhan NO, Duvan Cİ, Yuvacı H. Twin sisters with unique septate uterus: is it logical to think about any familial tendency? Turk J Med Sci. 2008;38:369–372.
55. Gumus İİ, Turhan NO. Are patients with positive screening but negative diagnostic test for gestational diabetes under risk for adverse pregnancy outcome? Obstet Gynaecol Res. 2008;34:359–363.
56. Kafali H, Duvan CI, Gozdemir E, Simavli S, Turhan NO. Placement of bupivacaine-soaked Spongostan in episiotomy bed is effective treatment modality for episiotomy-associated pain. J Minim Invasive Gynecol. 2008;15:719–722.
57. Turhan NO. Health prevention strategies and screening in women and men. Turkiye Klinikleri Tıp Bilimleri Dergisi. 2008;28(Suppl):S255–S261.
58. Gumus II, Koktener A, Dogan D, Turhan NO. Polycystic ovary syndrome and fibrocystic breast disease: is there any association? Arch Gynecol Obstet. 2009;280(2):249–253.
59. Derbent A, Turhan NO. Acute urinary retention caused by a large impacted leiomyoma. Arch Gynecol Obstet. 2009;280:1045–1047.
60. Duvan Cİ, Turhan NO, Onaran Y, Gümüş İİ, Gözdemir E. Familial Mediterranean fever: a diagnostic challenge in pregnancy. J Turkish German Gynecological Association. 2009;10:235–237.
61. Gümüş İİ, Uz E, Bavbek NE, Kargili A, Yanik B, Turgut FH, Ali Akcay A, Turhan NO. Does glomerular hyperfiltration in pregnancy damage the kidney in women with more parities? Int Urol Nephrol. 2009;41:927–932.
62. Duvan Cİ, Berker B, Bayrak Ö, Aydos K, Turhan NO, Satiroglu H. Comparison of semen parameters between pregnant and nonpregnant couples with male factor infertility during intrauterine insemination. Turk J Med Sci. 2009;39:531–536.
63. Turhan NO, Duvan CI, Bolkan F, Onaran Y. Effect of isoflavone on plasma nitrite/nitrate, homocysteine, and lipid levels in Turkish women in the early postmenopausal period: a randomized controlled trial. Turk J Med Sci. 2009;39:367–375.
64. Derbent A, Yılmaz Z, Simavlı S, Ozer O, Turhan NO. First-trimester ultrasonography revealed a gestational sac featuring cystic spaces and no visible embryo: a case of trisomy 7. J Turk Ger Gynecol Assoc. 2010;11:61–62.
65. Gümüş İİ, Karakurt F, Kargılı A, Turhan NO, Uyar ME. Association between prepregnancy body mass index, gestational weight gain, and perinatal outcomes. Turk J Med Sci. 2010;40:365–370.
66. Duvan Cİ, Gözdemir E, Kaygusuz I, Kamalak Z, Turhan NO. Etonogestrel contraceptive implant (Implanon): analysis of patient compliance and adverse effects in the breastfeeding period. J Turk Ger Gynecol Assoc. 2010;11:141–144.
67. Kaygusuz I, Turhan NO, Duvan CI, Koca C, Aydin M. Effect of genistein therapy on plasma levels of asymmetric dimethylarginine in healthy postmenopausal women: a randomized, placebo-controlled study. Fertil Steril. 2010;94:764–766.
68. Köşüş N, Köşüş A, Duran M, Simavlı S, Turhan N. Comparison of standard mammography with digital mammography and digital infrared thermal imaging for breast cancer screening. J Turk Ger Gynecol Assoc. 2010;11:152–157.
69. Gurbuz N, Sirav B, Yuvaci HU, Turhan N, Coskun ZK, Seyhan N. Is there any possible genotoxic effect in exfoliated bladder cells of rats under the exposure of 1800 MHz GSM-like modulated radiofrequency radiation (RFR)? Electromagn Biol Med. 2010;29:98–104.
70. Kösüs A, Kösüs N, Duran M, Turhan NO. Assessment of mean platelet volume of pregnant women with gestational diabetes mellitus and impaired glucose tolerance as a marker of future cardiovascular disease risk. British Journal of Diabetes & Vascular Disease. 2010;10:233–237.
71. Derbent A, Simavli S, Gümüş II, Tatli MM, Turhan NO. Nifedipine for the treatment of preterm labor in twin and singleton pregnancies. Arch Gynecol Obstet. 2011;284:821–826.
72. Köşüş A, Köşüş N, Usluoğulları B, Duran M, Turhan NO, Tekşam M. Fetal magnetic resonance imaging in obstetric practice. J Turk Ger Gynecol Assoc. 2011;12:39–46.
73. Köşüş N, Köşüş A, Turhan NO. Discrepancy in improvement of hearing loss between left and right ears after postmenopausal hormone therapy. Med Hypotheses. 2011;76:447–449.
74. Derbent A, Tatli MM, Duran M, Tonbul A, Kafali H, Akyol M, Turhan NO. Transient tachypnea of the newborn: effects of labor and delivery type in term and preterm pregnancies. Arch Gynecol Obstet. 2011;283:947–951.
75. Derbent A, Kargili A, Koca C, Gümüş II, Sevgili S, Sımavli S, Karakurt F, Turhan NO. Serum platelet-activating factor acetylhydrolase activity: relationship with metabolic syndrome in women with history of gestational diabetes mellitus. Gynecol Endocrinol. 2011;27:128–133.
76. Kosus N, Kosus A, Yıldırım M, Duran M, Turhan NO. Mean platelet volume as a marker of thrombosis in patients with missed abortion. Acta Haematol. 2011;125:208–209.
77. Turhan N, Pekel A, Arıkan Y, Duvan CI, Bayrak O. Single or double sperm wash processing by density gradient centrifugation: effect on citrate-induced intrauterine insemination cycle outcomes. Turk J Med Sci. 2011;41:39–44.
78. Köşüş A, Köşüş N, Turhan NO. Assessment of cardiomyopathy in fetuses of women with false-positive oral glucose loading test. Eur J Obstet Gynecol Reprod Biol. 2011;154:37–39.
79. Köşüş N, Köşüş A, Turhan NO, Kamalak Z. Do threshold values of ovarian volume and follicle number for diagnosing polycystic ovarian syndrome in Turkish women differ from western countries? Eur J Obstet Gynecol Reprod Biol. 2011;154:177–181.
80. Duvan Cİ, Cumaoglu A, Turhan NO, Karasu C, Kafali H. Oxidant/antioxidant status in premenstrual syndrome. Arch Gynecol Obstet. 2011;283:299–304.
81. Derbent A, Yanik F, Simavli S, Atasoy L, Ürün E, Kuscu E, Turhan NO. First-trimester maternal serum PAPP-A and free β-hCG levels in hyperemesis gravidarum. Prenatal Diag. 2011;31:450–453.
82. Köşüş N, Köşüş A, Turhan NO, Kurtaran H. Effect of tibolone on audiologic functions in menopausal women. Climacteric. 2011;14:262–267.
83. Turhan N, Pekel A, Ayrım A, Bayrak Ö. ICSI outcome in severe oligoasthenozoospermic patients and its relationship to prewash progressive sperm motility. Turk J Med Sci. 2011;41(1):995–999.
84. Köşüş N, Köşüş A, Turhan NO. Relationship of ovarian volume with mean platelet volume and lipid profile in patients with polycystic ovary syndrome. Exp Ther Med. 2011;2:1141–1144.
85. Kosus A, Kosus N, Duran M, Turhan N. Spontaneous rupture of fetal hydronephrosis: case report. Minerva Med. 2011;102:339–343.
86. Köşüş N, Köşüş A, Güler A, Simavlı SA, Turhan NO. Transcervical intrauterine levobupivacaine infusion or paracervical block for pain control during endometrial biopsy. Exp Ther Med. 2012;3:683–688.
87. Köşüş A, Köşüş N, Turhan NO. Is there any relation between umbilical artery and vein diameter and estimated fetal weight in healthy pregnant women? J Med Ultrasonics. 2012;39:227–234.
88. Keskin EA, Onur O, Keskin HL, Gumus II, Kafali H, Turhan N. Transcutaneous electrical nerve stimulation improves low back pain during pregnancy. Gynecol Obstet Invest. 2012;74:76–83.
89. Köşüş N, Köşüş A, Turhan NO. Mean platelet volume as a marker of future cardiovascular disease risk in pregnant women with impaired fasting glucose and impaired glucose tolerance. Turk J Med Sci. 2012;42:1–7.
90. Hızlı D, Köşüş A, Köşüş N, Kamalak Z, Ak D, Turhan NO. The impact of birth weight and maternal history on acne, hirsutism, and menstrual disorder symptoms in Turkish adolescent girls. Endocrine. 2012;41:473–478.
91. Köşüş A, Köşüş N, Turhan N. What is the best cut-off point for screening gestational diabetes in Turkish women? Turk J Med Sci. 2012;42:523–531.
92. Karabulut A, Derbent AU, Yıldırım M, Simavli S, Turhan NO. Evaluation of risk factors and effect of physical activity in caesarean section in nulliparous women. J Matern Fetal Neonatal Med. 2012;25:1456–1459.
93. Köşüş A, Köşüş N, Turhan NO. Gestational diabetes: comparison of the Carpenter and the Coustan thresholds with the new thresholds of Turkish women and implications of variations in diagnostic criteria. J Matern Fetal Neonatal Med. 2012;25(6):616–622.
94. Köşüş A, Köşüş N, Turhan NO. Are the first-trimester volumetric measurements with two-dimensional ultrasonography satisfactory? J Matern Fetal Neonatal Med. 2012;25:1117–1121.
95. Köşüş A, Köşüş N, Haktankaçmaz SA, Ak D, Turhan NO. Effect of dose and duration of micronized progesterone treatment during the first trimester on incidence of glucose intolerance and on birth weight. Fetal Diagn Ther. 2012;31:49–54.
96. Köşüş N, Köşüş A, Hizli D, Bitirgen EU, Turhan NO. Can serum ferritin, vitamin B12, and folic acid levels affect serum screening tests during pregnancy? J Matern Fetal Neonatal Med. 2012;25:1674–1677.
97. Köşüş N, Köşüş A, Turhan NO. First-trimester volumetric measurements: relation with hormone levels and fetal heart rate. Arch Gynecol Obstet. 2012;286:365–372.
98. Köşüş N, Köşüş A, Turhan NO, Kurtaran H. Hearing levels in menopausal women and the effect of tibolone on audiological functions. J Obstet Gynaecol. 2012;32:294–297.
99. Derbent AU, Yanik FF, Gümüş II, Simavli S, Turhan NO. Impact of inherited thrombophilias on first- and second-trimester maternal serum markers for aneuploidy. J Matern Fetal Neonatal Med. 2012;25:2177–2181.
100. Köşüş A, Köşüş N, Duran M, Turhan NO. Does assisted reproductive technology itself or polycystic ovary syndrome as a cause of infertility have any effect on first-trimester serum screening results? J Reprod Med. 2012;57:129–135.
101. Hızlı D, Köşüş N, Köşüş A, Kasap B, Kafali H, Turhan NO. First-trimester reference ranges for decidual thickness and its relation to progesterone levels. J Perinat Med. 2012;40:521–525.
102. Kösüs N, Kösüs A, Kamalak Z, Hızlı D, Turhan NO. Impact of adrenal versus ovarian androgen ratio on signs and symptoms of polycystic ovarian syndrome. Gynecological Endocrinol. 2012;28:611–614.
103. Derbent AU, Karabulut A, Yıldırım M, Simavlı SA, Turhan NO. Evaluation of risk factors in cesarean delivery among multiparous women with a history of vaginal delivery. J Turk Ger Gynecol Assoc. 2012;13:15–20.
104. Turhan N, Celik H, Duvan Cİ, Onaran Y, Aydın M, Armutcu F. Investigation of oxidative balance in patients with dysmenorrhea by multiple serum markers. J Turk Ger Gynecol Assoc. 2012;13:233–236.
105. Karaltı MO, Tınar Ş, Turhan NO, Öztürk DC. A case with vesicouterine fistula: minireview. Arch Gynecol Obstet. 2012;285:667–670.
106. Turhan N, Pekel A, Ayrım A, Kasap B, Bayrak Ö. Effectiveness of HP-hMG versus r-FSH in patients undergoing IVF/ICSI cycles with moderate male-factor infertility. Turk J Med Sci. 2013;43:144–149.
107. Kösüs N, Kösüs A, Duran M, Turhan NO. Effect of number of abnormal oral glucose tolerance test (OGTT) values on birth weight in women with gestational diabetes. Indian J Med Res. 2013;137:95–101.
108. Köşüş N, Köşüş A, Hızlı D, Turhan NO. Appetite hormones and hyperemesis gravidarum. OA Medical Hypothesis. 2014;18;2:1–3.
109. Duran M, Köşüş A, Köşüş N, Turhan NO. Relation between serum PAPP-A level and umbilical cord thickness during first trimester of pregnancy. J Matern Fetal Neonatal Med. 2014;27:385–387.
110. Simavli S, Derbent AU, Uysal S, Turhan NO. Hepcidin, iron status, and inflammation variables among healthy pregnant women in the Turkish population. J Matern Fetal Neonatal Med. 2014;27:75–79.
111. Kosus N, Köşüş A, Demircioğlu RI, Simavlı S, Derbent A, Keskin EA, Turhan NO. Transcervical intrauterine levobupivacaine or lidocaine infusion for pain control during endometrial biopsy. Pain Res Manag. 2014;19:82–86.
112. Duran M, Ustunyurt E, Kosus A, Kosus N, Turhan N, Hızlı D, Sarac GN, Erdogan D. Does vitamin E prevent tubal damage caused by smoking? A light microscopy and animal study. Eur J Obstet Gynecol Reprod Biol. 2014;175:149–151.
113. Turhan N, Simavlı S, Kaygusuz İ, Kasap B. Totally inverted cervix due to a huge prolapsed cervical myoma simulating chronic nonpuerperal uterine inversion. Int J Surg Case Rep. 2014;21:513–515.
114. Duran M, Turhan N, Kosus A, Kosus N, Sarac GN, Erdogan D, Keskin EA. Do cigarette smoke and vitamin E affect the development of endometrial pinopods? An animal study. Eur J Obstet Gynecol Reprod Biol. 2014;179C:117–120.
115. Kasap B, Akbaba E, Turhan NO, Kucuk M, Akin MA. Successful treatment of MTHFR A1298C and C677T mutant ectopic pregnant woman with extremely high serum β-hCG levels using single-dose methotrexate. J Cases Obstet Gynecol. 2014;1:54–56.
116. Köşüş N, Köşüş A, Duran M, Turhan NO. Effect of underlying infertility factors on second-trimester serum screening results. J Reprod Med. 2014;59:76–80.
117. Simavli S, Derbent AU, Keskin EA, Inegol IG, Uysal S, Turhan N. Do the first-, second-, and third-trimester maternal serum hepcidin concentrations clarify obstetric complications? J Matern Fetal Neonatal Med. 2014;19:1–17.
118. Onaran Y, Keskin EA, Duvan Cİ, Simavlı SA, Koca C, Kafalı H, Turhan N. Prohepcidin in maternal circulation: is it related with spontaneous preterm labor? Turk J Med Sci. 2014;44(6):1108–1113.
119. Köşüş N, Köşüş A, Turhan N. Relation between abdominal subcutaneous fat tissue thickness and inflammatory markers during pregnancy. Arch Med Sci. 2014 Aug 29;10:739–745.
120. Pekel A, Gönenç A, Turhan NO, Kafalı H. Changes of sFas and sFasL, oxidative stress markers in serum and follicular fluid of patients undergoing IVF. J Assist Reprod Genet. 2015;32(2):233–241.
121. Duvan CI, Simavli S, Keskin EA, Onaran Y, Turhan NO, Koca C. Is the level of maternal serum prohepcidin associated with preeclampsia? Hypertens Pregnancy. 2015;34(2):145–152.
122. Harmandar B, Yılmaz N, Akbaba E, Turhan NO, Kosan U, Kucuk M, Akın MN, Celik OI. Brenner tumor of the ovary with isolated elevation of the serum alkaline phosphatase level. J Cases Obstet Gynecol. 2015;2:4–5.
123. Akin MN, Kasap B, Turhan NO, Akbaba E, Oner G, Kucuk M. Conservative management of rectovestibular fistula in a pregnant woman. J Cases Obstet Gynecol. 2015;2:34–36.
124. Duran ME, Aydın A, Gökalp Ö, Köşüş N, Saraç GN, Turhan N. Possible protective effect of applying vitamin E to the rats having been exposed to cigarette smoke: an animal study. Global Advanced Research Journal of Medicine and Medical Science. 2015;4:183–189.
125. Oner G, Duran M, Ulug P, Turhan N, Kumtepe Y. Evaluation of the effects of dehydroepiandrosterone on ovarian reserve in a rat model with serum AMH and follicle count. Mitteilungen Klosterneuburg. 2015;65:114–121.
126. Oner G, Uluğ P, Duran M, Kumtepe Y, Turhan N. Evaluation of the effects of quadrivalent human papilloma virus (HPV) vaccine on the ovarian reserve in a rat model with anti-Müllerian hormone and histological analysis. Asian Academic Research Journal of Multidisciplinary. 2015;32:143–150.
127. Duran ME, Gökalp Ö, Alper T, Turhan N. Placenta accreta which is completed successfully with surgical procedure: case report. Clinical Case Reports and Reviews. 2015;1:16–18.
128. Duran M, Köşüş A, Köşüş N, Turhan NO. CRP, HbA1c, lipid, and biochemical parameters and their relation with maternal visceral adipose tissue and subcutaneous fat tissue thickness. Turk J Med Sci. DOI: 10.3906/sag-1404-100.
129. Kasap B, Akbaba G, Yeniçeri EN, Akın MN, Akbaba E, Öner G, Turhan NÖ, Duru ME. Adequate iodine levels in healthy pregnant women. A cross-sectional survey of dietary intake in Turkey. Saudi Med J. 2016;37(6):698–702.
130. Kasap B, Türkçü ÜÖ, Akbaba E, Sarıyıldız B, Küçük M, Turhan NO, Öner G, Özcan A. The predictive role of sTWEAK levels in pregnant women with first-trimester vaginal bleeding. J Matern Fetal Neonatal Med. 2018;31(13):1715–1719.
131. Khan HL, Bhatti S, Abbas S, Kaloglu C, Qurat-Ul-Ain Zahra S, Khan YL, Hassan Z, Turhan NÖ, Aydin HH. Melatonin levels and microRNA (miRNA) relative expression profile in the follicular ambient microenvironment in patients undergoing in vitro fertilization process. J Assist Reprod Genet. 2021;38(2):443–459.

Book Editor

Turhan N, Gökalp Öner. Jinekolojik ve Obstetrik Cerrahi Girişimlerin Komplikasyonlarının Yönetilmesi. Muğla Sıtkı Koçman Üniversitesi Yayınları, Muğla, 2015.

Book Chapters

1. Turhan NO, Toppare MF. Gebelik endokrinolojisi ve fetal endokrinopatiler. Fetal Tanı ve Tedavi. Ed. Saraçoğlu F. Güneş Kitabevi, 1998, sayfa 514–552.
2. Turhan NO. Erken membran rüptürü. Acil Durumlarda Tanı ve Tedavi. Ed. Kadayıfçı A, Karaaslan Y, Köroğlu E. Hekimler Yayın Birliği, 1999, sayfa 344–347.
3. Turhan NO. Preterm eylem ve doğum. Acil Durumlarda Tanı ve Tedavi. Ed. Kadayıfçı A, Karaaslan Y, Köroğlu E. Hekimler Yayın Birliği, 1999, sayfa 344–347.
4. Turhan NO, Doğan D. Perimenopoz ve tedavisi. Reprodüktif Endokrinoloji ve İnfertilite. Ed. Umur Çolgar. İstanbul Medikal Yayıncılık, 2006, sayfa 323–347.
5. Turhan NÖ, Aker A. Ovarian reserve testleri. Temel Üreme Endokrinolojisi ve İnfertilite. Ed. Çiçek N. Palme Yayıncılık, 2007.
6. Turhan NÖ. Hormon yerine koyma tedavileri. Üreme Endokrinolojisi ve Teknikleri ve Cerrahisi. Üreme Tıbbı Derneği Kitabı, 2009.
7. Köşüş N, Turhan NÖ. Menopoz ve osteoporoz. Kadın Hastalıkları ve Doğum Bilgisi. Ed. Çiçek N. Atlas Kitapçılık Tic. Ltd. Şirketi, 2012, sayfa 1751–1770.
8. Akbaba E, Turhan NÖ. Hormonal ve cerrahi kontraseptif yöntemler. Ed. Çiçek. Modern Tıp Kitabevi, 2013, sayfa 519–543.
9. Turhan N, Gökalp Öner. Histeroskopi komplikasyonlarının yönetilmesi. Jinekolojik ve Obstetrik Cerrahi Girişimlerin Komplikasyonlarının Yönetilmesi. Muğla Sıtkı Koçman Üniversitesi Yayınları, Muğla, 2015, sayfa 33–35.

Independent Academic Sources

The scientific record of Prof. Dr. Nilgün Turhan can be independently explored through major scholarly databases and research platforms:

ORCID – Prof. Dr. Nilgün Öztürk Turhan — Persistent researcher identifier: 0000-0002-9084-0630.

PubMed – Nilgün Turhan author search — Biomedical publication records and verified PMID/DOI links.

Web of Science — Database-specific author records should be verified directly in Web of Science.

Scopus — Bibliographic and citation database; author-level metrics are database-specific.

Google Scholar — Scholarly publication and citation search; metrics can change over time.

ResearchGate – Nilgün Öztürk Turhan — Research profile and platform-specific publication record.

Acıbadem Bayındır – Prof. Dr. Nilgün Turhan — Current institutional physician/publication profile; also useful as an independent publication source.

drnilgunturhan.com – Prof. Dr. Nilgün Turhan — Official English physician profile.

IVF Treatment Istanbul – Prof. Dr. Nilgün Turhan — Official international profile page and publication archive.

Frequently Asked Questions About Prof. Dr. Nilgün Turhan

Who Is Prof. Dr. Nilgün Turhan?

Prof. Dr. Nilgün Turhan is a Professor of Obstetrics and Gynecology and an IVF and infertility specialist based in Istanbul, Turkey. She has more than 35 years of clinical, academic, and scientific experience, with particular expertise in reproductive endocrinology, infertility, IVF, ICSI, ovarian reserve, PCOS, reproductive surgery, and perinatology.

Is Prof. Dr. Nilgün Turhan an IVF Specialist?

Yes. Prof. Dr. Nilgün Turhan specialises in Reproductive Endocrinology and Infertility, including IVF and ICSI. Her academic and clinical work in reproductive medicine began in the early 1990s and has included IVF treatment, ovarian stimulation, poor ovarian response, diminished ovarian reserve, PCOS, male-factor infertility, and previous unsuccessful fertility treatments.

Where Does Prof. Dr. Nilgün Turhan Practise?

Prof. Dr. Nilgün Turhan currently practises in Istanbul, Turkey. Since 2016, her clinical work in Istanbul has focused particularly on infertility, IVF, reproductive medicine, gynecology, and reproductive surgery.

Does Prof. Dr. Nilgün Turhan Treat International IVF Patients?

Yes. Prof. Dr. Nilgün Turhan treats international patients travelling to Istanbul for fertility evaluation and IVF treatment. International patients can provide their previous fertility investigations and treatment records before travelling so that their medical history and previous treatment can be reviewed in advance.

Can UK Patients Have IVF Treatment with Prof. Turhan in Istanbul?

Yes. Patients from the United Kingdom can travel to Istanbul for fertility evaluation and IVF treatment with Prof. Dr. Nilgün Turhan. NHS or private fertility records, previous IVF protocols, embryology reports, hormone results, and other relevant investigations can be reviewed before travelling when available.

Does Prof. Turhan Treat Patients from the USA and Canada?

Yes. Prof. Dr. Nilgün Turhan evaluates and treats international fertility patients travelling from the United States and Canada, as well as the United Kingdom, Europe, and other countries. Previous medical and fertility treatment records can be reviewed before travel to help plan the patient’s evaluation and treatment in Istanbul.

Can I Send My IVF Records Before Travelling to Turkey?

Yes. International patients may send previous IVF cycle reports, ovarian stimulation protocols, embryology reports, AMH and other hormone results, ultrasound findings, semen analyses, and relevant medical records before travelling. Reviewing previous treatment information can help determine what further evaluation may be required and assist with individual treatment planning.

Does Prof. Turhan Treat Women with Low AMH or Diminished Ovarian Reserve?

Yes. Diminished ovarian reserve, low AMH, and poor ovarian response are among Prof. Dr. Nilgün Turhan’s areas of clinical and academic interest. Treatment is individualised according to factors such as age, ovarian reserve, antral follicle count, previous ovarian response, reproductive history, and previous fertility treatments.

Does Prof. Turhan Treat Patients After Failed IVF Cycles?

Yes. Prof. Dr. Nilgün Turhan evaluates patients who have experienced previous unsuccessful IVF treatments. Assessment may include review of previous stimulation protocols, ovarian response, oocyte yield, fertilisation, embryo development, embryo transfer history, uterine factors, male-factor infertility, and other clinically relevant factors before planning another treatment.

Does Prof. Turhan Treat Women Over 40 for IVF?

Yes. Prof. Dr. Nilgün Turhan evaluates women of advanced reproductive age, including women over 40, for fertility treatment and IVF. Treatment options and the expected chance of success are assessed individually according to age, ovarian reserve, reproductive history, and other medical and fertility factors.

What Is Prof. Nilgün Turhan's Academic Background?

Prof. Dr. Nilgün Turhan graduated from Ankara University Faculty of Medicine in 1983 and completed her Obstetrics and Gynecology residency at Zekai Tahir Burak Women’s Health Training and Research Hospital. She became Associate Professor in 1994 and Professor of Obstetrics and Gynecology in 2000. During her university career, she held senior positions including Department Chair, IVF Center Director, Vice Dean, Director of an Institute of Health Sciences, and Head of a Division of Perinatology.

Where Did Prof. Turhan Receive Her IVF Training?

Prof. Dr. Nilgün Turhan received international training in Reproductive Endocrinology, Infertility, and IVF at the University of Modena in Italy in 1990–1991. After returning to Turkey, she continued her clinical and research work in the Reproductive Endocrinology and IVF Department at Zekai Tahir Burak Women’s Health Training and Research Hospital.

How Many Scientific Publications Does Prof. Turhan Have?

Prof. Dr. Nilgün Turhan’s academic CV lists 138 international peer-reviewed journal publications and 87 national peer-reviewed journal publications. Her broader academic record also includes more than 200 international and national scientific presentations, book and book-chapter contributions, research projects, and supervised academic theses.

What Is Prof. Nilgün Turhan's H-Index?

As of 5 September 2026, publicly accessible Google Scholar-derived data reported by AD Scientific Index list 3,288 citations, an h-index of 30, and an i10-index of 87; 1,005 citations, an h-index of 15, and an i10-index of 29 are attributed to the recent five-year period. These values are dynamic and database-specific.

What Is Prof. Nilgün Turhan's ORCID?

Prof. Dr. Nilgün Turhan’s ORCID identifier is 0000-0002-9084-0630. ORCID provides a persistent academic identifier that helps distinguish her research from that of authors with similar names and connects publications appearing under different author-name formats.

Which Scientific Databases Index Prof. Turhan’s Research?

Prof. Dr. Nilgün Turhan’s scientific publications can be found across major academic and biomedical research platforms, including PubMed, Web of Science, Scopus, Google Scholar, and ResearchGate. Her publications may appear under author-name variants including Nilgün Turhan, Nilgün Öztürk Turhan, Nilgün O. Turhan, and N. O. Turhan; her ORCID identifier is 0000-0002-9084-0630.