Journals / Kafkas Üniversitesi Veteriner Fakültesi Dergisi / 2014 / Cilt: 20 - Sayı: 5

Sütçü ineklerde östrus siklusunun oksidan ve antioksidan parametreler üzerine etkisi

The effect of estrous cycle on oxidant and antioxidant parameters in dairy cows

Pages
703–709
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In conclusion, oxidant/antioxidant status and lipid profile were afected by cyclic changes.

📌 3 Key Takeaways

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Objective & Hypothesis:Reactive oxygen species have fundamental roles in reproductive functions.
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Key Findings & Data:For this purpose 25 healthy multiparous Holstein dairy cows having regular estrous cycles were used.
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Conclusion & Impact:In conclusion, oxidant/antioxidant status and lipid profile were afected by cyclic changes.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Reactive oxygen species have fundamental roles in reproductive functions. To comprehensively evaluate the relation between reactive oxygen species and infertility, physiological variations across the estrous cycle in healthy cows have to be known. For this purpose 25 healthy multiparous Holstein dairy cows having regular estrous cycles were used. The estrous cycles were synchronized by ovsynch protocol. Oxidant [lipid hydroperoxide (LOOH), total oxidant status (TOS), oxidative stress index (OSI)], antioxidant parameters [total antioxidant status (TAS), total free sulfhydryl groups (SH), ceruloplasmin (CP), paraoxonase-1 (PON1), arylesterase (ARE), uric acid (UA)], lipid profile and progesterone levels were assayed at estrus, metestrus, diestrus and proestrus stages of the estrous cycle in the plasma samples. The plasma levels of oxidant (LOOH, TOS and OSI) and antioxidant (TAS, SH and UA) parameters were significantly decreased during the luteal phase compared to the follicular phase (at proestrus and at estrus) of the estrous cycle. There was also a significant positive correlation between TAS and TOS. The activity of PON1 and ARE significantly increased only at diestrus. Levels of high density lipoprotein, low density lipoprotein and total cholesterol elevated during the follicular phase (estrus) and declined during the luteal phase. In conclusion, oxidant/antioxidant status and lipid profile were afected by cyclic changes. Moreover, antioxidant defense system showed adaptive response to increased oxidative activities by occurring parallel increases and it may indicate that there is a dynamic balance between oxidant and antioxidant status during the estrous cycle in healthy cows.

Özet

Reaktif oksijen türlerinin üreme fonksiyonları üzerinde önemli rolleri vardır. Sağlıklı süt sığırlarında reaktif oksijen türleri ve infertilite arasındaki ilişkiyi kapsamlı bir şekilde değerlendirmek için östrus siklusu boyunca reaktif oksijen türü seviyelerindeki değişimlerin bilinmesi gerekir. Bu çalışmada düzenli siklus gösteren 25 adet sağlıklı Holştayn ırkı sütçü inek kullanıldı. Östrus siklusları ovsynch protokolü ile senkronize edildi. Östrus siklusunun proöstrus, östrus, metaöstrus ve diöstrus dönemlerinde kan plazmasında oksidan parametreler [lipit hidroperoksit (LOOH), total oksidan seviye (TOS), oksidatif stres indeksi (OSI)], antioksidan parametreler [total antioksidan kapasite (TAS), total serbest sülfhidril gruplar (SH), seruloplazmin (CP), paraoksonaz-1 (PON1), arilesteraz (ARE), ürik asit (UA)], lipit profili ve progesteron seviyesi ölçüldü. Foliküler dönemle karşılaştırıldığında luteal dönemdeki plazma oksidan (LOOH, TOS, OSI) ve antioksidan (TAS, SH, UA) seviyelerinin önemli derecede düştüğü görüldü. Ayrıca TAS ve TOS değerleri arasında önemli bir pozitif korelasyon vardı. Paraoksonaz-1 ve ARE aktiviteleri sadece diöstrus döneminde anlamlı olarak arttı. Foliküler dönemde (östrus) artan yüksek yoğunluklu lipoprotein, düşük yoğunluklu lipoprotein ve total kolesterol seviyeleri luteal dönemde düştü. Sonuç olarak, oksidan/antioksidan denge ve lipit profili östrus siklusu sırasındaki değişikliklerden etkilenmiştir. Ayrıca, antioksidan savunma sistemi artan oksidatif strese karşı paralel artışlar göstererek uygun savunma cevapları oluşturmuştur. Bu da sağlıklı ineklerde östrus siklusu boyunca oksidan ve antioksidanlar arasında dinamik bir dengenin olabileceğini göstermektedir.

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Cite This Article

AYDİLEK, N., VARIŞLI, Ö., SELEK, S., KORKMAZ, Ö., ATLI, M. O., TAŞKIN, A. (2014). Sütçü ineklerde östrus siklusunun oksidan ve antioksidan parametreler üzerine etkisi. Kafkas Üniversitesi Veteriner Fakültesi Dergisi, Cilt: 20 - Sayı: 5, 703–709. https://ajindex.com/articles/273644

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