Journals / Türk Göğüs Kalp Damar Cerrahisi Dergisi / 2009 / Cilt: 17 - Sayı: 2

The effect of erythropoietin on lung injury in rat aortic ischemia-reperfusion

Eritropoietinin sıçan aortik iskemi-reperfüzyonunda akciğer hasarı üzerine etkisi

Pages
110–116
Publication Date
2022-09-02
DOI
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In histopathologicalexamination, rats treated with aortic IR alone had significant- ly higher scores for alveolar congestion, inflammatory infil- tration, intraalveolar hemorrhage, intraalveolar macrophages,and overall lung injury compared to the control rats (p<0.05).Erythropoietin-administered rats had lower scores in all theseparameters compared to the aortic IR group, with scores ofinflammatory infiltration, intraalveolar macrophages, andoverall lung injury being significantly lower (p<0.05).

📌 3 Key Takeaways

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Objective & Hypothesis:Background: We investigated the effect of erythropoietinon ischemia-reperfusion (IR) injury in lungs occurringafter occlusion–reperfusion of rat infrarenal abdominalaorta (IAA).
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Key Findings & Data:Two groupsunderwent aortic IR designed as 30 min of ischemia byclamping of the IAA with an atraumatic microvascularclamp, followed by 60 min of reperfusion after removal ofthe aortic clamp.
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Conclusion & Impact:In histopathologicalexamination, rats treated with aortic IR alone had significant- ly higher scores for alveolar congestion, inflammatory infil- tration, intraalveolar hemorrhage, intraalveolar macrophages,and overall lung injury compared to the control rats (p<0.05).Erythropoietin-administered rats had lower scores in all theseparameters compared to the aortic IR group, with scores ofinflammatory infiltration, intraalveolar macrophages, andoverall lung injury being significantly lower (p<0.05).
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Background: We investigated the effect of erythropoietinon ischemia-reperfusion (IR) injury in lungs occurringafter occlusion–reperfusion of rat infrarenal abdominalaorta (IAA). Methods: Twenty-four Wistar albino rats were randomizedto three groups equal in number. Control rats underwentlaparotomy and IAA dissection without IR. Two groupsunderwent aortic IR designed as 30 min of ischemia byclamping of the IAA with an atraumatic microvascularclamp, followed by 60 min of reperfusion after removal ofthe aortic clamp. In one aortic IR group, 1000 U/kg eryth- ropoietin was administered subcutaneously 5 min beforedeclamping of the IAA. The rats were decapitated underdeep anesthesia and the lungs were removed. Tissue levelsof malondialdehyde (MDA) and activity levels of superox- ide dismutase (SOD), catalase, and glutathione peroxidasewere measured and lung specimens were examined histo- pathologically. Results: Rats treated with aortic IR alone had significantlyhigher tissue MDA levels and activity levels of SOD and cata- lase compared to the control group (p<0.05). Erythropoietin- administered rats exhibited significantly lower catalase activ- ity than the aortic IR group (p<0.05). In histopathologicalexamination, rats treated with aortic IR alone had significant- ly higher scores for alveolar congestion, inflammatory infil- tration, intraalveolar hemorrhage, intraalveolar macrophages,and overall lung injury compared to the control rats (p<0.05).Erythropoietin-administered rats had lower scores in all theseparameters compared to the aortic IR group, with scores ofinflammatory infiltration, intraalveolar macrophages, andoverall lung injury being significantly lower (p<0.05). Conclusion: Erythropoietin attenuates the severity of lunginjury occurring after abdominal aortic IR in rats.

Özet

Amaç: Bu çalışmada sıçan infrarenal abdominal aortunda(İAA) oklüzyon-reperfüzyon sonrası akciğerlerde oluşaniskemi-reperfüzyon (İR) hasarına eritropoietinin etkisiaraştırıldı. Ça lış ma pla nı: Yirmi dört adet Wistar albino cinsi sıçanrastgele ve eşit sayıda üç gruba ayrıldı. Kontrol grubundalaparatomi ve İAA diseksiyonu yapıldı, İR uygulanmadı.Aortik İR grubunda, İAA’ya travmatik olmayan mik- rovasküler klemp konularak 30 dakika iskemi, klempkaldırılarak 60 dakika reperfüzyon uygulandı. AortikİR+eritropoietin grubunda da 30 dakika iskemi, 60 daki- ka reperfüzyon uygulandı ve ayrıca klemp kaldırılmadan5 dakika önce 1000 Ü/kg eritropoietin subkutan yollaverildi. Anestezi altında yaşamları sonlandırılan sıçanlarınakciğerleri çıkarıldı ve akciğer dokularında malondialde- hid (MDA) düzeyi ve süperoksit dismutaz (SOD), katalazve glutatyon peroksidaz aktivite düzeyleri ölçüldü ve his- topatolojik inceleme yapıldı. Bul gu lar: Aortik İR grubunda MDA, SOD ve katalazdeğerleri kontrol grubundaki değerlerden anlamlı dere- cede yüksek bulundu (p<0.05). Aortik İR+eritropoietingrubundaki katalaz değeri aortik İR grubundan anlamlıderecede düşüktü (p<0.05). Histopatolojik incelemede,aortik İR grubuna ait alveolar konjesyon, inflamatu- var infiltrasyon, intraalveolar hemoraji, intraalveolarmakrofaj ve akciğer hasarı skorları, kontrol grubun- dan anlamlı derecede yüksek bulundu (p<0.05). AortikİR+eritropoietin grubunda ise bu değerlerin hepsi aortikİR grubundan düşük bulundu; inflamatuvar infiltrasyon,intraalveolar makrofaj ve akciğer hasarı skorlarındakidüşüklük anlamlıydı (p<0.05). So nuç: Eritropoietin, sıçanlarda abdominal aort İR sonrasıoluşan akciğer hasarını azaltıcı etki göstermektedir.

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Cite This Article

KARAHAN, N., KİRİŞ, İ., KAPAN, Ş., OKUTAN, H., KILBAŞ, A., ALTUNTAŞ, İ. (2022). The effect of erythropoietin on lung injury in rat aortic ischemia-reperfusion. Türk Göğüs Kalp Damar Cerrahisi Dergisi, Cilt: 17 - Sayı: 2, 110–116. https://ajindex.com/articles/425004

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