Journals / Turkish Journal of Gastroenterology / 2003 / Cilt: 14 - Sayı: 1

İntestinal iskemi / reperfüzyon sonrasında alfa-tokoferol ve verapamilin mukozal fonksiyonlar üzerine etkisi

The effects of alpha-tocopherol and verapamil on mucosal functions after gut ischemia / reperfusion

Pages
26–32
DOI
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AI Summary & Key Takeaways

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

Using verapamil together with $\alpha$ tocopherol in the same preservation solution did not increase the preventive effect of $\alpha$ tocopherol,

📌 3 Key Takeaways

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Objective & Hypothesis:Background/Aims: We have previously shown that in the canine small bowel autotransplantation model, adding alpha -tocopherol to Euro Collins solution for perfusion enhanced the integrity of the small bowel mucosa for up to 12 hours in the posttransplantation period.
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Key Findings & Data:In Group 1 (control group) grafts were perfused with Euro Collins solution while those of Group 2 were perfused with Euro Collins and $\alpha$ tocopherol.
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Conclusion & Impact:Using verapamil together with $\alpha$ tocopherol in the same preservation solution did not increase the preventive effect of $\alpha$ tocopherol,
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:alfa-Tokoferol · Verapamil · Hipertonik solüsyonlar

Abstract

Background/Aims: We have previously shown that in the canine small bowel autotransplantation model, adding alpha -tocopherol to Euro Collins solution for perfusion enhanced the integrity of the small bowel mucosa for up to 12 hours in the posttransplantation period. The purpose of this study was to investigate the effects of verapamil and $\alpha$ Tocopherol on reperfusion injury in the canine small bowel autotransplantation model. Methods: The study consisted of four groups of six animals each. In Group 1 (control group) grafts were perfused with Euro Collins solution while those of Group 2 were perfused with Euro Collins and $\alpha$ tocopherol. Group 3 grafts were perfused with Euro Collins + verapamil and Group 4 with Euro Collins, $\alpha$ tocopherol and verapamil. Autotransplantation model was used to avoid immunological injury. Graft function and mucosal integrity were assessed by the analysis of enzymatic activities (mucosal glutaminase, maltase and lactase) and histopathological examination. Malonyldialdehyde (per gram tissue) was used as an indicator of lipid peroxidation. Results: Glutaminase activity of Group 4 was found to be higher than that of the other groups at all time points (p<0.05). In the verapamil group (Group 3), the amount of lipid peroxidation showed the greatest decrease in comparison to other groups at the 12 hour time point (p<0.05). Maltase activity in Group 3 was significantly different at all time points (p<0.05). Lactase activity showed no significant difference between groups at each time point. The microscopic appearance of tissue injury shown by histopathological examination of tissue samples obtained at different time points was related to decrease in mucosal enzymatic activities. Conclusions: $\alpha$ tocopherol is a promising agent for the prevention of tissue injury caused by free oxygen radicals during organ transplantation. Verapamil, as an antioxidant, also has preventive effects in organ preservation. Using verapamil together with $\alpha$ tocopherol in the same preservation solution did not increase the preventive effect of $\alpha$ tocopherol,

Özet

Amaç: Daha önce yaptığımız çalışmamızda, alfa-Tocopherol ($\alpha$ T)' ün Euro Collins (EC) solüsyonuna perfüzyon için eklenmesinin ince barsak mukozasının bütünlüğünün korunmasında post-transplant dönemde 12. saate kadar etkili olduğu gösterilmiştir. Köpeklerde yapılan bu deneysel çalışmada, verapamil ve $\alpha$ T 'ün reperfüzyon zedelenmesine etkisi, ince barsak ototransplant modelinde incelenmiştir. Yöntem: Çalışma her biri 6 denekten oluşan toplam 4 grupta planlandı. Grup l'de (kontrol grubu) greffier EC solüsyonu ile perfüze edilirken, Grup 2'de EC+ $\alpha$ T ile perfüze edildi. Grup 3'te perfüzyon için EC +verapamil kullanılırken, Grup 4'te EC+ $\alpha$ T+verapamil kulanıldı. immünolojik zedelenmeyi ekarte etmek için ototransplantasyon modeli kullanıldı. Greft fonksiyonları ve mukoza bütünlüğünün değerlendirilmesi, enzimatik aktivitelere (mukozal glutaminaz, maltaz ve laktaz) ve histopatolojik incelemelere dayanılarak yapıldı. Lipit peroksidasyonunun değerlendirilmesi için gram doku başına malonildialdehit düzeyine bakıldı. Bulgular: Örneklerin alındığı tüm zamanlarda Grup 4'te glutaminaz aktivitesi diğer gruplardan yüksekti (p<0.05). Grup 3'te lipit peroksidasyonu miktarı 12.saatte en az düzeye inmiştir (p<0.05). Grup 3'te maltaz aktivitesi bütün zamanlarda farklılık gösterdi (p<0.05). Bütün gruplarda laktaz aktivitesi tüm zamanlarda farklılık göstermedi. Enzim aktivitelerini saptamak için aynı zaman periyotlarında ince barsaklardan alınan örneklerin histopatolojik incelemesi de mukozal enzimatik aktivitelerdeki azalmayı teyid eder özellikteydi. Sonuç: $\alpha$ T serbest oksijen radikallerine bağlı doku zedelenmesinin önlenmesinde etkili bir ajandır. Verapamil de bir antioksidan olarak organ prezervasyonunda etkilidir. Verapamilin $\alpha$ T ile birlikte EC solüsyonu içinde kullanılması $\alpha$ T'ün koruyucu etkinliğini artırmamaktadır.

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Cite This Article

YAĞMURDUR, M. C., ÖZDEMİR, A., ÖZENÇ, A., KILINÇ, K. (2003). İntestinal iskemi / reperfüzyon sonrasında alfa-tokoferol ve verapamilin mukozal fonksiyonlar üzerine etkisi. Turkish Journal of Gastroenterology, Cilt: 14 - Sayı: 1, 26–32. https://ajindex.com/articles/410912

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