Prof. Dr. Mehmet Çolakoğlu
Scientific studies authored or co-authored by Prof. Dr. Mehmet Cengiz Çolakoğlu.
2026 · Annals of Clinical and Analytical Medicine
In 60 patients with and without PCOS, the study examined procalcitonin and ovarian hyperstimulation syndrome. A day-five increase in those developing OHSS suggested a possible early marker, rather than an established standalone diagnostic test.
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2025 · Česká gynekologie
This retrospective study of 72 men with idiopathic non-obstructive azoospermia examined AMH as a predictor of sperm retrieval with micro-TESE. Higher AMH was associated with unsuccessful retrieval; the findings cannot guarantee an individual outcome.
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2025 · Ege Tıp Dergisi
Records from 312 laparoscopic hysterectomies were reviewed for catheter duration and urinary fistula. Longer Foley use was associated with lower fistula risk; the observational design does not establish one catheter schedule for every patient.
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2024 · Annals of Clinical and Analytical Medicine
In 265 IVF patients, baseline FSH/LH ratio was examined against ovarian response and pregnancy outcomes. A higher ratio was associated with a lower egg response, without a significant difference in pregnancy or live birth rates.
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2024 · Mersin Üniversitesi Sağlık Bilimleri Dergisi
Sixty normal responders were compared across agonist and antagonist IVF protocols using serum and follicular-fluid ischaemia-modified albumin. Clinical pregnancy rates were similar; the oxidative-stress marker findings should be interpreted within their research setting.
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2023 · Annals of Clinical and Analytical Medicine
The study investigates peripheral natural killer cell activity in unexplained recurrent miscarriage. It explores a possible immune association with pregnancy loss and should not be read as a recommendation for routine NK testing or immune treatment.
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2023 · International Journal of Diabetes in Developing Countries
ChREBP and SREBP-1c levels were compared in 50 pregnancies with gestational diabetes and 52 with normal glucose tolerance. Lower levels were found in the diabetes group, exploring biological pathways linking glucose and lipid metabolism.
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2020 · Harran Üniversitesi Tıp Fakültesi Dergisi
Among 64 women receiving progesterone for threatened miscarriage, vaginal, intramuscular and combined administration were compared. Combined treatment raised serum progesterone faster; this does not by itself demonstrate a higher live birth rate.
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2020 · Turkish Journal of Obstetrics and Gynecology
Endometrial CD56+ NK cells were compared in 25 women with recurrent implantation failure and 25 with previous live birth. Lower counts were found in the failure group; this small study did not test treatment effectiveness.
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2019 · Selçuk Tıp Dergisi
This case report describes simultaneous intrauterine and ectopic pregnancy after IVF. Following surgery for the ectopic pregnancy, the intrauterine pregnancy reached term; a single case does not establish a general success rate.
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2016 · Şişli Etfal Hastanesi Tıp Bülteni
This retrospective series reviews seven years of genetic amniocentesis, including indications and detected chromosome abnormalities. It contributes clinical data relevant to prenatal diagnosis and genetic counselling.
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2015 · Gynecological Endocrinology
In suboptimal IVF responders, recombinant LH supplementation was compared with increasing FSH. Results favoured LH in the selected group; they do not establish that every patient benefits from routine LH supplementation.
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2013 · Journal of Obstetrics and Gynaecology
Cyclin A, cyclin E and p27 staining was studied in 75 normal, hyperplastic and malignant endometrial samples. Increased cyclin E and reduced p27 in cancer samples contributed to research into cell-cycle regulation.
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2011 · Journal of Obstetrics and Gynaecology
Fifteen patients undergoing laparoscopic removal of intra-abdominally displaced IUDs were reviewed retrospectively. The series describes device locations and surgical outcomes; removal decisions require individual risk assessment.
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2011 · Journal of Obstetrics and Gynaecology Research
In 240 pregnancies, counselling before amniocentesis was evaluated for anticipated and experienced pain and anxiety. The findings support the value of clear information in the procedure experience.
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2011 · Journal of Obstetrics and Gynaecology Research
A new vaginal vault suspension technique at vaginal hysterectomy was compared with the conventional approach. Four-year follow-up reported less vault prolapse and greater vaginal length with the new technique.
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2011 · Archives of Gynecology and Obstetrics
Surgical outcomes in 150 patients treated for adnexal torsion over five years were reviewed. Age, fertility preservation and suspicion of malignancy were discussed as important factors in selecting a surgical approach.
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2011 · The Journal of Maternal-Fetal & Neonatal Medicine
In 101 first pregnancies, misoprostol followed by oxytocin was compared with oxytocin alone for labour induction. The combined approach shortened time to delivery; drug selection and safety require obstetric assessment.
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2010 · Gynecologic and Obstetric Investigation
Antenatal betamethasone was evaluated in 100 pregnancies at risk of delivery at 34–36 weeks. Fewer newborn respiratory problems occurred in the steroid group; the authors called for larger studies.
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2010 · Fertility and Sterility
Multiple-dose methotrexate and conversion to surgery were studied in 294 unruptured tubal ectopic pregnancies. Outcome was more closely related to mass size than initial beta-hCG; this historical series is not a current treatment protocol.
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2010 · Gynecologic and Obstetric Investigation
Modified biophysical profile and Doppler ultrasound were compared in 315 pregnancies at or beyond 36 weeks. Combining the assessments increased sensitivity for predicting certain perinatal outcomes.
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2009 · Taiwanese Journal of Obstetrics and Gynecology
A laparoscopic extracorporeal approach using one ancillary trocar was assessed in 220 selected patients with presumed benign ovarian cysts. Operating time, cyst removal and complications were reviewed to evaluate feasibility.
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2009 · Acta Obstetricia et Gynecologica Scandinavica
In 468 patients, cervical tenaculum application during IUI was examined for uterine contractions and pregnancy outcomes. More contractions and higher pregnancy rates were reported in the application group; one study does not establish routine necessity.
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2009 · Gynecologic and Obstetric Investigation
Selected inherited thrombophilia variants were compared between women with repeated IVF failure and controls. The study found no significant association between the tested mutations and implantation failure.
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2008 · Journal of Obstetrics and Gynaecology Research
A six-year series reviewed adnexal masses requiring surgery during pregnancy. Most were benign; the results reflect a selected population at a tertiary referral centre.
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2008 · Taiwanese Journal of Obstetrics and Gynecology
Single and double IUI were compared in a randomised study of 100 infertile patients. Pregnancy rates did not differ significantly; the authors noted the need for larger studies.
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2007 · BJOG
Outcomes of central incision with Foley catheter placement were reported in 65 patients treated for imperforate hymen. The study evaluates patency of the opening and the surgical approach.
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2007 · The European Journal of Contraception & Reproductive Health Care
Efficacy, side effects and reasons for removal were followed in 80 Implanon users. Changes in bleeding patterns were highlighted as an important part of counselling before insertion.
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2006 · Geburtshilfe und Frauenheilkunde
Rapid tubal transfer after ICSI was compared with uterine embryo transfer. No improvement was demonstrated; laparoscopy and multiple-pregnancy risks led the authors to question its clinical suitability.
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2004 · Archives of Gynecology and Obstetrics
TNF-alpha, IL-6 and antiphospholipid markers were compared in women with and without recurrent miscarriage. An association with TNF-alpha was reported, without establishing causality or treatment effectiveness.
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1996 · International Urogynecology Journal and Pelvic Floor Dysfunction
A new suspension procedure for stress urinary incontinence and anterior vaginal wall prolapse is described through experience in 31 patients. It aims to support the bladder neck and vaginal wall.
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1987 · The American Journal of Medicine
This case report concerns the return of normal menstrual cycles after 17 years in a patient with Sheehan’s syndrome. As the index record has no abstract, this description is limited to the subject stated in the title.
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1986 · Clinical and Experimental Obstetrics & Gynecology
The study investigated DHEAS, prolactin and testosterone in female infertility and hirsutism. Its historical hormone findings should not be used as current diagnostic thresholds or individual treatment advice.
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2023 · Research Square · Preprint
This retrospective preprint compares endometrial co-culture with conventional culture in recurrent implantation failure. It reports favourable embryo-development findings; it is not presented as a peer-reviewed article or proof of causal superiority.
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Prof. Dr. Mehmet Çolakoğlu