Journals / GORM:Gynecology Obstetrics & Reproductive Medicine / 2008 / Cilt: 14 - Sayı: 1

Melatoninin pinealektomize rat overinde folikül ve apopitotik değişikliklere etkisi

Role of melatonin on follicle development and apoptotic changes in pinealectomized rat ovary

Pages
19–24
DOI
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⚡ TL;DR(Too Long; Didn't Read)

CONCLUSIONS: Pinealectomy increases ovarian cysts and apoptosis in the follicles that can not be prevented by melatonin which was probably a result of the dose and duration of melatonin.

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Objective & Hypothesis:OBJECTIVE: The aim of this study is to determine the effect of pinealectomy and exogenous melatonin STUDY DESIGN: Twenty-one Wistar rats were divided into 3 groups: (I) Sham-operated (Non-Px), (II) pinealectomized (Px), (III) pinealectomized and melatonin.
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Key Findings & Data:Sham and Px groups had received vehicle whereas group III had received 4 mg/kg melatonin.
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Conclusion & Impact:CONCLUSIONS: Pinealectomy increases ovarian cysts and apoptosis in the follicles that can not be prevented by melatonin which was probably a result of the dose and duration of melatonin.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

OBJECTIVE: The aim of this study is to determine the effect of pinealectomy and exogenous melatonin STUDY DESIGN: Twenty-one Wistar rats were divided into 3 groups: (I) Sham-operated (Non-Px), (II) pinealectomized (Px), (III) pinealectomized and melatonin. Sham and Px groups had received vehicle whereas group III had received 4 mg/kg melatonin. Terminal deoxynucleotidyl transferase-mediated deoxyuridine 5-triphosphate nick end-labeling activity (TUNEL) assessment was used to identify follicles that contain fragmented nuclei, an indication of apoptosis. TUNEL staining was evaluated semi-quantitatively and ovarian cysts were counted. RESULTS: In Px group, TUNEL activity was significantly higher than sham group. Melatonin administration did not reduce the intensity of TUNEL positive follicles. The difference between pinealectomy and melatonin groups regarding TUNEL activity was insignificant. Significantly increased ovarian cysts were detected after pinealectomy and melatonin did not prevent this increase. Px and melatonin groups were not significantly different than each other regarding the TUNEL activities and ovarian cysts. CONCLUSIONS: Pinealectomy increases ovarian cysts and apoptosis in the follicles that can not be prevented by melatonin which was probably a result of the dose and duration of melatonin.

Özet

Bu çalışma ovaryan morfoloji, oosit ve granuloza hücre apopi-tozisine pinealektomi ve ekzojen melatonin replasmanının etkisini saptamak amacıyla planlandı. Yirmibir adet Wistar rat üç guruba ayrıldı: (I) Sham grup (Non-Px); (II) pinealektomize grup (Px); ve (III) pinealektomize + melatonin grup. Sham ve Px gruba etanol verilirken, III. gruba 4mg/kg melatonin verildi. Foliküllerdeki apopitotik değişiklikleri saptamak için terminal deoksinukleotidil transferaz mediated deoksiuridin 5- trifosfat (TÜNEL) yöntemi kullanıldı. TÜNEL ile boyanmış alanlar semi-quantatif olarak sayıldı ve ovaryan kist sayıları kaydedildi. Pinealektomize grupta, TÜNEL aktivitesi sham grubunda gözlenenden belirgin olarak daha yüksekti. Melatonin uygulaması TÜNEL ile boyalı folikül sayısını azaltmadı. Pinealektomi ve melatonin grupları arasında TÜNEL aktivitesi bakımından belirgin bir fark yoktu. Pinealektomi sonrası ovaryan kist oluşumunda belirgin artış oldu ve melatonin uygulaması bu artışı önlemedi. Px ve melatonin gruplarında TÜNEL aktivitesi ve ovaryan kist oluşumu benzerdi.Pinealektomi ovaryan kist oluşumu ve foliküler apoptozisi artırır. Eksojen melatonin uygulanımı pinealektomi etkilerini geri çevirmez.

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Cite This Article

ÇELİK, Ö., PARLAKPINAR, H., HASÇALIK, Ş., MIZRAK, B., ÖZŞAHİN, M. (2008). Melatoninin pinealektomize rat overinde folikül ve apopitotik değişikliklere etkisi. GORM:Gynecology Obstetrics & Reproductive Medicine, Cilt: 14 - Sayı: 1, 19–24. https://ajindex.com/articles/227058

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