Journals / Toraks Dergisi / 2008 / Cilt: 9 - Sayı: 1

An experimental study of the histopathological effect of melatonin on cyclosporin induced lung damage

Siklosporine bağlı akciğer hasarında melatoninin histopatolojik etkileri üzerine deneysel çalışma

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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

It was concluded that CyA dependent damage may be reversible and that this damage may be significantly decreased by melatonin administration.

📌 3 Key Takeaways

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Objective & Hypothesis:In recent studies, it has been reported that the widely used immunosuppressive agent, cyclosporine A (CyA), causes tissue damage and that free oxygen radicals play a role in this damage.
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Key Findings & Data:Four groups, each with 8 rats, were used in this study: Group 1; control, Group 2; 4 mg/kg/day intraperitoneal (i.p.) melatonin, Group 3; 10 mg/kg/day subcutaneous (s.c.) CyA and Group 4; 4 mg/kg/day melatonin (i.p.) plus 10 mg/kg/day CyA (s.c.).
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Conclusion & Impact:It was concluded that CyA dependent damage may be reversible and that this damage may be significantly decreased by melatonin administration.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Enjeksiyon · deri altı · Sıçan

Abstract

In recent studies, it has been reported that the widely used immunosuppressive agent, cyclosporine A (CyA), causes tissue damage and that free oxygen radicals play a role in this damage. Melatonin, which is the most important indoleamine released by the pineal gland, is a free radical scavenger and an antioxidant agent. In this study, we aimed to study histopathologically the probable positive effects of Melatonin on CyA induced lung tissue damage. Four groups, each with 8 rats, were used in this study: Group 1; control, Group 2; 4 mg/kg/day intraperitoneal (i.p.) melatonin, Group 3; 10 mg/kg/day subcutaneous (s.c.) CyA and Group 4; 4 mg/kg/day melatonin (i.p.) plus 10 mg/kg/day CyA (s.c.). The study lasted for 28 days for each group. At the end of this period, the rats were killed with lethal anesthesia. Their lungs were removed and embedded in pa- raffin blocks before being processed for microtome. The preparations were stained with Haematoxylene-Eosin (H-E), and Masson’s trichrome dyes. Both control and Melatonin groups appeared normal. In the CyA group, congestion of the parenchyma, perialveolar edema, perivascular and peribronchial infiltration and thickening of interalveolar septum as a result of an increase in connective tissue were observed in the rat lungs. In the CyA plus melatonin group, histopathological findings were significantly milder than those of the CyA group. Furthermore, mild congestion and edema was encountered only in rare areas. It was concluded that CyA dependent damage may be reversible and that this damage may be significantly decreased by melatonin administration.

Özet

Son yıllarda yapılan çalışmalarda yaygın kullanılan bir immunbaskılayıcı ilaç olan siklosporin A(CyA)'nın dokularda hasar oluşturduğu ve bu hasarda serbest oksijen radikallerinin rolü olduğu üzerinde durulmaktadır. Pineal bezden üretilen en önemli indoleamin olan Melatonin serbest radikal süpürücüsü ve antioksidandır. Çalışmamızda CyA'ya bağlı akciğer hasarı üzerine melatoninin olası yararlı etkilerini histopatolojik olarak incelemeyi amaçladık. Bu çalışmada her biri 8'er sıçandan oluşan 4 grup oluşturuldu. 1. grubumuz kontrol grubuydu. 2. grup 4mg/kg/gün intraperitoneal melatonin verdiğimiz grup. 3. grup 10 mg/kg/gün subkutan CyA uygulanan grup ve 4. grup 4mg/kg/gün melatonin intraperitoneal ve 10 mg/kg/gün CyA subkutan uygulanan grup. Çalışmamız her grup için 28 gün sürdü. Bu sürenin sonunda denekler terminal anesteziyle öldürüldü. Çıkarılan akciğer dokusu parafin bloklara gömülerek kesit alındı. Bu kesitler genel histolojik yapıyı gözlemlemek amacıyla hematoksilen-eozin (H-E) ve Masson's trikrom boyalarıyla boyandı. Hem kontrol, hem de melatonin uyguladığımız grublarda akciğer kesitleri histolojik olarak normal görünümdeydi. CyA uygulanan sıçanlarda akciğerde konjesyon ve alveolar ödem, perivasküler ve peribronşial infiltrasyon ve interalveolar septumda bağ dokusu artışı, bronşiollerde yer yer epitel hücre dökülmeleri, pulmoner intersisyumda hemosiderin yüklü makrofajlar ve hafif kanama alanları tespit edildi. CyA ile birlikte melatonin uygulanan grupta bu histopatolojik bulgularımızın oldukça azaldığı tespit edildi. Bununla birlikte nadir alanlarda hafif konjesyon ve ödeme rastlandı. CyA'ya bağlı hasarın geri dönüşümlü olduğu ve melatonin uygulamasıyla bu hasarın önemli ölçüde azaltılabileceği sonucuna varıldı.

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Cite This Article

KURUŞ, M., EŞREFOĞLU, M., OTLU, A. (2008). An experimental study of the histopathological effect of melatonin on cyclosporin induced lung damage. Toraks Dergisi, Cilt: 9 - Sayı: 1, 1–6. https://ajindex.com/articles/368148

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