Sevtap SEYFETTİNOĞLU, Gülnaz ŞAHİN, Ayşin AKDOĞAN, Ege Nazan TAVMERGEN GÖKER, Yasemin AKÇAY, Eser Y. SÖZMEN, Erol TAVMERGEN

Total antioksidan kapasite ve oksidatif stresin IVF siklusunda fertilizasyon ve embriyo seçimindeki rolü

Amaç: Bu çalışmada IVF sikluslarında foliküler sıvı ve embriyo kültür ortamındaki oksidan ve antioksidan parametrelerin değerlendirilmesi ve embriyo kalitesi, fertilizasyon başarısı ve gebelik üzerine etkilerinin araştırılması amaçlanmıştır. Gereç ve Yöntem: Bu prospektif çalışmaya IVF/ICSI uygulanan 51 hasta dahil edildi. Toplam 454 foliküler sıvıdan iki yüz altmış sıvı ve transfer edilen elli bir embriyonun (her hastadan bir tane) hücre kültürü ortamı incelendi. Antioksidan aktivite (AOA), Trolox eşdeğer antioksidan kapasite (TEAC), tiyobarbitürat reaktif maddeler (TBARS), ferrik antioksidan güç (FRAP), paraoksonaz, nitrotirozin analiz edildi. Bulgular: TBARS, döllenmiş oositlerin foliküler sıvısında, döllenmemiş oositlere göre önemli ölçüde daha düşüktü (21'e karşı 29.75 nmol/ml,). Diğer parametreler açısından fark yoktu. TEAC seviyeleri, agonist protokol grubundaki oositlerde antagonist protokol grubuna göre daha yüksekti. Embriyo kalitesi açısından hiçbir analizde gruplar arasında fark yoktu. İkinci gün embriyo transferinden sonra gebe kalan grupta embriyo hücre kültürü ortamında TEAC düzeyleri daha yüksekti. Sonuç: Hem folikül sıvısında hem de embriyo hücre kültürü ortamında oksidatif stres ve antioksidan parametreler değerlendirildiğinde lipid peroksidasyonunun fertilizasyonu olumsuz etkilediği ancak embriyo kalitesi ve gebelik oranları açısından önemli bir fark olmadığı saptanmıştır.

Anahtar Kelimeler:

IVF, oksidatif stres, embriyo kalitesi

Role of total antioxidant capacity and oxidative stress in fertilization and embryo selection in the IVF cycle

Purpose: This study aims to evaluate the oxidant and antioxidant parameters in follicular fluid and embryo culture medium in IVF cycles and investigate their effects on embryo quality, fertilization success, and pregnancy. Materials and Methods: Fifty-one patients who underwent IVF/ICSI were included in this prospective study. Two hundred sixty of a total of 454 follicular fluids and the cell culture media of transferred fifty-one embryos (one from each patient) were examined. Antioxidant activity (AOA), Trolox equivalent antioxidant capacity (TEAC), thiobarbiturate reactive substances (TBARS), ferric antioxidant power (FRAP), paraoxonase, nitrotyrosine were analyzed. Results: TBARS were significantly lower in the follicular fluid of fertilized oocytes than in non-fertilized oocytes (21 vs. 29.75 nmol/ml). There was no difference in terms of other parameters. TEAC levels were higher in oocytes in the agonist protocol group than in the antagonist protocol group. In terms of embryo quality, there were no differences between the groups in any analysis. TEAC levels were higher in the embryo cell culture medium in the group that became pregnant after embryo transfer on the second day. Conclusion: When oxidative stress and antioxidant parameters were evaluated in both follicle fluid and embryo cell culture medium, it was determined that lipid peroxidation negatively affected fertilization. However, there is no significant difference in terms of embryo quality and pregnancy rates.

Keywords:

IVF, oxidative stres, embryo quality,

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