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Venöz Mikroanastomoza Eritropoietinin Etkileri

The Effects of Erythropoietin on Venous Microanastomosis

Journal Name:

  • Selçuk Tıp Dergisi

Publication Year:

  • 2010

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Keywords (Original Language):

Author NameUniversity of Author
Abstract (2. Language): 
Although microsurgery has rapid advanced, problems at the site of venous microanastomosis still continue. Thrombosis of the venous microanastomosis is the major reason for free tissue transfer and replantation complications. Erythropoietin is a principal hematopoietic regulator responsible for the proliferation and diferentiation of erythroid progenitor cells and endothelial cells. Aim of this study is to observe the complications of microvenous anastomosis line and to investigate the protective effects of erythropoietin. Seventy eight Sprague-Dawley rats were divided into two groups (Control and Erythropoietin), and the groups were subdivided into three groups (3rd, 5th and 7th days). Rat dorsal penil vein was the study model. One-hundred-fifty IU/kg Erythropoietin was administrated via subcutaneously instantly venous anastomosis and every 48 hours to all Erythropoietin groups. Penil vein anastomosis line samples and blood samples were taken for assesment at 3rd, 5th and 7th days, after venous anastomosis. Morphometric analysis of each venous segment was done with a Clemex analysis program by the same examiner. Neointimal and medial areas were measured in each section and the neointima/media ratio was calculated. Haematocrit values were measured in all rats for 3rd, 5th and 7th days. The ratio of intima to medial areas were significantly less in Erythropoietin groups for 3rd and 5th days compared to control groups for the same days. There were no significant difference for the ratio of intima to medial areas between the contol and erythropoietin groups for 7th day. There were no significant difference for haematocrit levels between the the control and erythropoietin groups at 3rd, 5th and 7th days. Our study has shown that erythropoietin administration markedly reduced intimal formation and risk of thrombosis with accelerated endothelial regeneration after microvascular anastomosis in rat dorsal penil vein.
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Abstract (Original Language): 
Mikrocerrahide hızlı ilerlemeler olmasına rağmen venöz mikroanastomoz alanındaki problemler hala devam etmektedir. Serbest doku transferleri ve replantasyon komplikasyonlarının major nedeni venöz mikroanastomoz trombozudur. Eritropoietin, eritroid progenitor ve endotelyal hücrelerin proliferasyonu ve farklılaşmasından sorumlu en önemli hematopoietik düzenleyicidir. Bu çalışmanın amacı venöz mikroanastomoz alanındaki komplikasyonları gözlemlemek ve eritropoetinin buna karşı koruyucu etkisini araştırmaktır. Yetmiş sekiz adet Sprague- Dawley cinsi erkek rat kontrol ve eritropoietin olarak iki gruba ayrıldı; bu iki grup da 3., 5. ve 7. gün olmak üzere üç alt gruba ayrıldı. Çalışma modeli olarak rat dorsal penil veni kullanıldı. Tüm eritropoietin gruplarına anastomoz anında ve her 48 saatte bir 150 IU/kg dozda eritropoietin uygulandı. Venöz anastomoz sonrası 3., 5. ve 7. günlerde değerlendirilmek üzere penil ven anastomoz hattı ve kan örnekleri alındı. Her bir venöz segmentin morfometrik analizi aynı araştırıcı tarafından Clemex® analiz programı ile yapılarak neointima ve media alanları ölçüldü ve neointima/media oranları hesaplandı. 3., 5. ve 7. günlerde tüm ratların hematokrit değerleri ölçüldü. 3. ve 5. günlerde eritropoietin gruplarında kontrol gruplarına göre intima/media oranları anlamlı derecede daha düşük bulundu. 7. gün için kontrol ve eritropoietin grupları arasında anlamlı fark bulunmadı. Hematokrit değerleri için 3., 5. ve 7. günlerde kontrol ve eritropoietin grupları arasında fark bulunmadı. Çalışmamız rat dorsal penil veninde mikrovasküler anastomoz sonrası eritropoietin uygulamasının endotelyal rejenerasyonu hızlandırarak intimal formasyonu ve trombüs riskini önemli derecede azalttığını göstermiştir.
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  • 2
49-53
  • Turkish

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