Journals / Anadolu Kardiyoloji Dergisi / 2007 / Cilt: 7 - Sayı: 4

Biyoprostetik kalp kapağı materyalinde kalsifikasyonun TPEN ile önlenmesi

Prevention of calcification with TPEN in pericardial bioprosthetic heart valve material

Pages
365–370
Publication Date
2022-10-10
DOI
—
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AI Summary & Key Takeaways

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

Conclusion: Calcific degeneration of glutaraldehyde-fixed bovine pericardium can be reduced by using TPEN without any effect on durability.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: Calcification is a frequent cause of the clinical failure of bioprosthetic heart valves fabricated from glutaraldehyde pretreated bovinepericardium.
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Key Findings & Data:Methods: Bovine pericardium was cut into 2-cm2 pieces, rinsed in phosphate-buffered saline solution, transferred into +4°C phosphate-buffered saline containing 0.625% glutaraldehyde for initial fixation for 48 h, and allocated into two groups.
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Conclusion & Impact:Conclusion: Calcific degeneration of glutaraldehyde-fixed bovine pericardium can be reduced by using TPEN without any effect on durability.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: Calcification is a frequent cause of the clinical failure of bioprosthetic heart valves fabricated from glutaraldehyde pretreated bovinepericardium. The major object of the present study is to prevent calcification of pericardial bioprosthetic heart valve materials with TPEN. Methods: Bovine pericardium was cut into 2-cm2 pieces, rinsed in phosphate-buffered saline solution, transferred into +4°C phosphate-buffered saline containing 0.625% glutaraldehyde for initial fixation for 48 h, and allocated into two groups. Control samples were treated in an identical fresh solution for five more days. Others underwent additional fixation in phosphate-buffered saline 2µM TPEN for 48 h. They were then transferred intophosphate-buffered saline + 0.625% glutaraldehyde solution at 37°C (pH 7.4) for three more days. Pericardial patches were inserted into thedorsal pouches of 18 juvenile male Wistar rats as control and study groups. Rats were divided into two groups and sacrificed consecutively by the end of 9th and 12th weeks. The biomechanical properties and calcium contents of explanted tissues were tested and were also assessed histopathologically. Results: The difference in the calcium contents of the control and study groups’ pericardial tissues at the 9th, and 12th weeks were statisticallysignificant (p=0.0001, p=0.0001). The comparison of calcium contents between controls of 9th and 12th weeks and study groups’ of the 9th and 12th weeks pericardial tissues were also significant (p=0.0001 and p=0.0001). Histopathologic and biomechanical assessment also supported these findings. Conclusion: Calcific degeneration of glutaraldehyde-fixed bovine pericardium can be reduced by using TPEN without any effect on durability.

Özet

Amaç: Kalsifikasyon, sığır perikardından glutaraldehid ile muamele edilerek elde edilen biyoprostetik kalp kapaklarında görülen klinik yetmezliğin en sık rastlanan nedenidir. Bu çalışmanın temel amacı biyoprostetik kalp kapaklarında görülen kalsifikasyonun TPEN ile önlenmesinin araştırılmasıdır.Yöntemler: İki santimetrekarelik parçalara ayrılmış sığır perikardından elde edilen parçalar, fosfat tamponlu salin solüsyonuyla yıkandıktan sonra, ilk fiksasyon için +4 C°’de bulunan %0.625 glutaraldehid içeren fosfat tamponlu salin solüsyonunda 48 saat bekletildi ve 2 gruba ayrıldı. Kontrol grubu örnekleri, aynı özellikteki yeni hazırlanmış solüsyonla 5 gün muamele edildi. Diğerlerine 2µM TPEN içeren fosfat tamponlu salin solüsyon 48 saat ek fiksasyon için uygulandı. Bu parçalar +37 C°’de bulunan %0.625 glutaraldehid içeren fosfat tamponlu salin solüsyonda (pH 7.4) 3 gün için nakledildi. Perikart parçaları juvenil 18 adet erkek rat’ın (Wistar) sırtına iki taraflı çalışma ve kontrol grubu olarak yerleştirildi. Sıçanlar iki gruba ayrıldı ve 9. ve 12. haftaların sonlarında ardı sıra sakrifiye edildiler. Çıkartılan perikart dokularının kalsiyum içerikleri ve biyomekanik özellikleri ölçüldü ve histopatolojik olarak araştırıldı. Bulgular: Dokuzuncu ve 12. haftalardaki kontrol ve çalışma grupları karşılaştırıldığında kalsiyum içerikleri istatistiksel olarak anlamlıydıp=0.0001, p=0.0001). Kontrol grubunun perikart örneklerinin ve çalışma grubunun perikart örneklerinin 9 ve 12. hafta kalsiyum içeriklerinde farklıydı (p=0.0001, p=0.0001). Biyomekanik ve histopatolojik incelemeler de bu bulguları destekliyordu. Sonuç: Glutaraldehid ile fikse edilmiş sığır perikardiyumundaki kalsifik dejenerasyon dokunun dayanıklılığını etkilemeksizin TPEN ile azaltılabilir.

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Cite This Article

YILMAZ, N., ÖZEREN, M., AYTAÇOĞLU, B. N., DÖNDAŞ, H., TAMER, L., DİKMENGİL, M., SUCU, N., KÖSE, N., ÇÖMELEKOĞLU, Ü. (2022). Biyoprostetik kalp kapağı materyalinde kalsifikasyonun TPEN ile önlenmesi. Anadolu Kardiyoloji Dergisi, Cilt: 7 - Sayı: 4, 365–370. https://ajindex.com/articles/437169

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