Journals / Ege Tıp Dergisi / 2002 / Cilt: 41 - Sayı: 2

Effects of vitamin E and caffeic acid phenethyl ester (CAPE) on methabolic enzymes of rats with experimental liver ischemia-reperfusion injury

Deneysel karaciğer iskemi-reperfüzyon oluşturulan sıçanlarda E vitamini ve kafeik asit fenetil ester'in (CAPE) metabolik enzimlere etkileri

Pages
77–82
DOI
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⚡ TL;DR(Too Long; Didn't Read)

We conclude that CAPE produces these effects not directly by decreased/increased metabolic enzyme induction, but by indirectly via decreasing tissue injury as shown in our recent studies.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, the activities of liver carbohydrate metabolism enzymes, hexokinase (HK), glucose-6-phosphate dehydrogenase (G6PD), 6-phosphogluconate dehydrogenase (6PGD), lactate dehydrogenase (LDH) and malate dehydrogenase (MDH) after experimental Ischemia-reperfusion of rat liver and effects of E vitamin and caffeic acid phenethyl ester (CAPE) on these enzyme activities were investigated.
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Key Findings & Data:Wistar albino male rats were divided into 4 groups each consisting of 10 rats.
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Conclusion & Impact:We conclude that CAPE produces these effects not directly by decreased/increased metabolic enzyme induction, but by indirectly via decreasing tissue injury as shown in our recent studies.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Vitamin E · Modeller · hayvan

Abstract

In this study, the activities of liver carbohydrate metabolism enzymes, hexokinase (HK), glucose-6-phosphate dehydrogenase (G6PD), 6-phosphogluconate dehydrogenase (6PGD), lactate dehydrogenase (LDH) and malate dehydrogenase (MDH) after experimental Ischemia-reperfusion of rat liver and effects of E vitamin and caffeic acid phenethyl ester (CAPE) on these enzyme activities were investigated. Wistar albino male rats were divided into 4 groups each consisting of 10 rats. Isotonic, CAPE and vitamin E were applied intraperitoneally in the I/R groups. Activities of HK, G6PD and 6PGD were increased and activities of LDH and MDH were decreased in isotonic+l/R group in comparison with the sham group. Increased activities of HK, 6PGD and decreased activities of LDH and MDH were observed in vitamin E group compared to isotonic+l/R group. In CAPE group, activities of HK, G6PD and 6PGD were increased and activity of LDH were decreased significantly when compared to the isotonic+l/R group. There was no difference between CAPE and sham groups. Increased activities of HK, G6PD, 6PGD and MDH were detected in CAPE group in comparison with vitamin E group. As a result, we may conclude that CAPE protects glycolysis and pentose phosphate pathway in the injured tissue more than vitamin E and thus decreases injury via increased nucleic acid synthesis as well as supporting energy production by increased activity of citric acid cycle. We conclude that CAPE produces these effects not directly by decreased/increased metabolic enzyme induction, but by indirectly via decreasing tissue injury as shown in our recent studies.

Özet

Bu çalışmada, deneysel olarak iskemi-reperfüzyon (l/R) oluşturulan sıçan karaciğerlerinde karbohidrat metabolizmasının önemli enzimleri olan heksokinaz (HK), glukoz-6-fosfat dehidrogenaz (G6PD), 6-fosfoglukonat dehidrogenaz (6PGD), laktat dehidrogenaz (LDH) ve malat dehidrogenaz (MDH) enzimleri çalışılmış ve bu enzimlerin aktivitelerine E vitamini ve kafeik asit fenetil ester (CAPE)'in etkileri araştırılmıştır. Wistar Albino erkek sıçanlar 10'arlı 4 gruba ayrılmıştır, iskemireperfüzyon gruplarına izotonik, E vitamini ve CAPE intrapehtoneal olarak uygulanmıştır. Izotonik+l/R grubunda sham grubuna göre HK, G6PD ve 6PGD aktiviteleri anlamlı olarak artarken, LDH ve MDH aktiviteleri ise anlamlı olarak azalmıştır. E vitamini uygulanan sıçanların HK ve 6PGD aktivitelerinde izotonik+l/R grubuna göre anlamlı artış varken, LDH ve MDH aktivitelerinde ise anlamlı azalma saptanmıştır. CAPE uygulanan sıçanlar izotonik+l/R grubu ile karşılaştırıldığında HK, G6PD ve 6PGD aktivitelerinde anlamlı artış ve LDH aktivitesinde anlamlı azalma gözlenmiştir. CAPE ile sham grupları arasında anlamlı bir fark saptanmamıştır CAPE uygulanan sıçanlar E vitamini grubu ile karşılaştırıldığında HK, G6PD, 6PGD ve MDH aktivitelerinin değerlerinde anlamlı artış oluşmuştur. Sonuç olarak CAPE'nin, E vitaminine göre hasarlı dokuda glikoliz ve pentoz fosfat yolunun bütünlüğünü daha iyi koruduğu ve hasarı azalttığı, sitrik asit siklusunu da daha aktif tutarak enerji üretimini desteklediği söylenebilir. Bu etkisini direkt olarak bu metabolik enzimlerin indüksiyonunu artırarak/azaltarak değil de, daha önceki çalışmalarımızda da gösterildiği gibi doku hasarını azaltarak indirekt yoldan yaptığını düşünmekteyiz.

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Cite This Article

UZ, E., YILMAZ, H. R., IRAZ, M., FADILLIOĞLU, E., ÖZYURT, H., SÖGÜT, S., AKYOL, Ö. (2002). Effects of vitamin E and caffeic acid phenethyl ester (CAPE) on methabolic enzymes of rats with experimental liver ischemia-reperfusion injury. Ege Tıp Dergisi, Cilt: 41 - Sayı: 2, 77–82. https://ajindex.com/articles/223351

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