Journals / Mersin Üniversitesi Sağlık Bilimleri Dergisi / 2011 / Cilt: 4 - Sayı: 2

Sıçan Koroner Mikrovasküler Endotel Hücre Kültüründe Östrojenin Oluşturduğu RhoA Up-regülasyonu Üzerine ICI182,780, Progesteron ve Testosteronun Etkisi

Pages
17–21
Publication Date
2011-06-01
DOI
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AI Summary & Key Takeaways

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

Conclusion: Activation of Rho/Rho-kinase pathway might be responsible for the development of estrogen associated cardiovascular complications.

📌 3 Key Takeaways

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Objective & Hypothesis:Abstract The Effects of ICI182,780, Progesterone and Testosterone on Estrogen Induced Upregulation of RhoA Expressions in The Rat Coronary Microvascular Endothelium Cell Culture Method: Wistar rats were used in the study.
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Key Findings & Data:The cell suspensions were plated and incubated at 37oC under 5% CO2.
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Conclusion & Impact:Conclusion: Activation of Rho/Rho-kinase pathway might be responsible for the development of estrogen associated cardiovascular complications.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:endotel · 17&beta · -estradiol

Abstract

Abstract The Effects of ICI182,780, Progesterone and Testosterone on Estrogen Induced Upregulation of RhoA Expressions in The Rat Coronary Microvascular Endothelium Cell Culture Method: Wistar rats were used in the study. Coronary microvascular endothelial cells were obtained by the mounted rat hearts on a constant-flow Langendorff system. The cell suspensions were plated and incubated at 37oC under 5% CO2. Confluent flasks were passaged. The third passage coronary microvascular endothelial cells were made quiscent 24 hours before experimentation. Next, it was incubated with either 17β-estradiol (10-8 -10-7M), or its combination with ICI182, 780 (10-5M), progesterone (10-8 - 10-7M), and testosterone (10-8 - 10-7M) for 24 hrs. Afterwards, the cells in flasks were homogenized and RhoA protein enzyme expression levels were measured by Western-Blotting technique. Results: 17-β estradiol causes RhoA up-regulation that can not be blocked by progesterone and testosterone in rat coronary microvascular endothelial cell culture. Conclusion: Activation of Rho/Rho-kinase pathway might be responsible for the development of estrogen associated cardiovascular complications.

Özet

Türkçe Özet: Amaç: Bu çalışmada sıçan koroner mikrovasküler endotel hücrelerinde tek başına estradiol ve estradiolün progesteron, testosteron ve estrojen reseptör α ve β blokörü ile kombinasyonlarının RhoA ekspresyonu üzerine etkileri Western blot analizi ile değerlendirildi. Yöntem: Çalışmada Wistar türü sıçanlar kullanıldı. Kalpler Langendorff kalp perfüzyon sistemine asılarak koroner mikrovasküler endotel hücreleri elde edildi. Hücreler kültür flasklarına ekilerek 37ºC\'de %5 CO2\'li ortamda inkübe edildi. Konfluent olan flasklar pasajlanarak çoğaltıldı. 3. pasaj koroner mikrovasküler endotel hücreleri, deneylerden 24 saat önce bölünmeleri durdurulup 17β-estradiol (10-8 ve 10-7M) tek başına veya 17β-estradiol testosteron (10-8 ve 10-7M), progesteron (10-8 ve 10-7M) ve ICI 182, 780 (10-5M), kombinasyonu ilave edilerek 24 saat inkübe edildi. İnkübasyon sonrası flasklardaki hücreler homojenize edilerek Western-Blot yöntemi ile RhoA protein enzim ekspresyon düzeyleri ölçüldü. Bulgular: 17β-estradiol sıçan koroner mikrovasküler endotel hücre kültüründe progesteron ve testosteron ile bloke edilemeyen RhoA up-regülasyonu neden olmaktadır. Sonuç: Sonuç olarak östrojene bağlı olarak gözlemlenen kardiyovasküler komplikasyonlardan Rho/Rho-kinaz yolağının aktivasyonu sorumlu olabilir.

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Cite This Article

KURT, A. H., TİFTİK, R. N., ÜN, İ., BÜYÜKAFŞAR, K. (2011). Sıçan Koroner Mikrovasküler Endotel Hücre Kültüründe Östrojenin Oluşturduğu RhoA Up-regülasyonu Üzerine ICI182,780, Progesteron ve Testosteronun Etkisi. Mersin Üniversitesi Sağlık Bilimleri Dergisi, Cilt: 4 - Sayı: 2, 17–21. https://ajindex.com/articles/44144

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