Journals / Türk Klinik Biyokimya Dergisi / 2018 / Cilt: 16 - Sayı: 1

Melatonin Effects on Serum Paraoxonase and Lactonase in Experimental Myocardial Infarction

Melatoninin Deneysel Miyokart Infarktüsünde Serum Paraoksonaz ve Laktonaza Etkisi

Pages
32–41
Publication Date
2022-11-04
DOI
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Conclusion: Melatonin prevents a decrease in serum paraoxonase and lactonase activities seen in ISOinduced myocardial infarction.

📌 3 Key Takeaways

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Objective & Hypothesis:Purpose: To investigate the effects of melatonin on serum paraoxonase and lactonase activities in isoproterenol-induced myocardial infarction.
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Key Findings & Data:Melatonin was injected intraperitoneally for 7 days to melatonin and ISO+melatonin groups.
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Conclusion & Impact:Conclusion: Melatonin prevents a decrease in serum paraoxonase and lactonase activities seen in ISOinduced myocardial infarction.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Purpose: To investigate the effects of melatonin on serum paraoxonase and lactonase activities in isoproterenol-induced myocardial infarction. Materials and Methods: Rats were divided into four groups as control, melatonin, ISO and ISO+melatonin. Melatonin was injected intraperitoneally for 7 days to melatonin and ISO+melatonin groups. On 6th and 7th days, isoproterenol was injected intraperitoneally to ISO and ISO+melatonin groups. One rat for each group was kept alive for 15 days after the last ISO injection and their hearts were investigated histopathologically. On 8th day, all other rats were sacrificed and serum troponin I and malondialdehyde levels, total oxidant and antioxidant status, paraoxonase and lactonase activities were measured. Oxidative stress index was calculated from the formula. Results: Experimental myocardial infarction was confirmed by serum TnI elevation and was supported with histopatologic examination which shows existence of fibrotic areas. Serum malondialdehyde, total oxidant status and oxidative stress index were significantly increased whereas total antioxidant status, paraoxonase and lactonase activities were significantly decreased in isoproterenol-induced myocardial infarction. Melatonin significantly decreased malondialdehyde, total oxidant status and oxidative stress index and increased paraoxonase and lactonase activities in isoproterenol-induced myocardial infarction. Melatonin increased serum lactonase activity in healthy rats. Conclusion: Melatonin prevents a decrease in serum paraoxonase and lactonase activities seen in ISOinduced myocardial infarction.

Özet

Amaç: Melatoninin isoproterenol ile oluşturulan miyokart infarktüsünde paraoksonaz ve laktonazaktivitelerine etkisini incelemektir.Materyal ve Metod: Sıçanlar kontrol, melatonin, ISO ve ISO+melatonin olmak üzere dört gruba ayrıldı.Melatonin ve ISO gruplarına 7 gün boyunca intraperitoneal olarak melatonin enjekte edildi. ISO veISO+melatonin gruplarına 6. ve 7. günlerde intraperitoneal olarak isoproterenol enjekte edildi. Hergruptan birer sıçan son isoproterenol enjeksiyonundan sonra 15 gün daha yaşatılarak kalp dokularıhistopatolojik olarak incelendi. Diğer tüm sıçanlar 8. günde sakrifiye edilerek serum troponin I vemalondialdehit düzeyleri, total oksidan ve antioksidan durum, paraoksonaz ve laktonaz aktiviteleriölçüldü. Oksidatif stres indeksi formülden hesaplandı.Bulgular: Deneysel miyokart infarktüsü serum troponin I düzeylerinin artışı ile kanıtlandı, fibrotikalanların varlığını gösteren histopatolojik inceleme ile de desteklendi. İsoproterenol ile oluşturulanmiyokart infarktüsünde, malondialdehit, total oksidan durum ve oksidatif stres indeksi anlamlı olarakartarken, total antioksidan durum, paraoksonaz ve laktonaz aktiviteleri anlamlı olarak azaldı. Melatonin,isoproterenol ile oluşturulan miyokart infarktüsünde, serum malondialdehit, total oksidan durum veoksidatif stres indeksini anlamlı olarak azalttı ve paraoksonaz ve laktonaz aktivitelerini anlamlı olarakarttırdı. Sağlıklı sıçanlarda melatonin serum laktonaz aktivitesini artırdı.Sonuç: Melatonin, isoproterenol ile oluşturulan miyokart infarktüsünde serum paraoksonaz ve laktonazaktivitelerinde gözlenen azalmayı önler.

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Cite This Article

USTA, U., ÖZGÜN, E., ESKİOCAK, S., ÖZGÜN, G. S., GÖKMEN, S. S. (2022). Melatonin Effects on Serum Paraoxonase and Lactonase in Experimental Myocardial Infarction. Türk Klinik Biyokimya Dergisi, Cilt: 16 - Sayı: 1, 32–41. https://ajindex.com/articles/634383

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