Journals / Tıp Araştırmaları Dergisi / 2004 / Cilt: 2 - Sayı: 3

The activities of catalase, superoxide dismutase, adenosine deaminase, xanthine oxidase enzymes and levels of malondialdehyde and nitric oxide in lung tissue of rats exposed to subacute and subchronic formaldehyde

Subakut ve subkronik formaldehide maruz bırakılmış sıçanların akciğer dokusunda CAT, SOD, ADA, XO aktiviteleri ile MDA ve NO düzeyleri

Pages
31–36
DOI
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AI Summary & Key Takeaways

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

FA exposure period on oxidative stress of lung tissue.

📌 3 Key Takeaways

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Objective & Hypothesis:Purpose: Formaldehyde (FA) is an irritating and toxic gas.
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Key Findings & Data:The rats exposed to subacute (4 weeks) and subchronic (13 weeks) 0,10, 20 ppm FA.
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Conclusion & Impact:FA exposure period on oxidative stress of lung tissue.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Sıçan · Wistar · Malondialdehit

Abstract

Purpose: Formaldehyde (FA) is an irritating and toxic gas. It is the most important member of aldehydes. FA is used in anatomy, pathology and histology laboratories, embalming and deselection procedures. The aim of this study is to investigate the effect of FA on the activities of the lung enzymes and MDA and NO levels in lung tissues exposed to subacute and subchronic FA inhalation. Methods: Sixty male rats were divided into six groups each included ten rats. The rats exposed to subacute (4 weeks) and subchronic (13 weeks) 0,10, 20 ppm FA. At the end of the exposure period, rats were decapitated under ether anesthesia. The lung tissues were extracted and homogenized and used in biochemical analyses. Results: The total activities of superoxide dismutase (SOD), catalase (CAT), adenosine deaminase (ADA), xanthine oxidase (XO) and levels of MDA, NO in lung tissue were measured. A significant decrease in SOD activity was found in subacute 10 ppm group compared to control group. There was a significant decrease in CAT and SOD activities in subacute 20 ppm group and significant increase in MDA and NO levels was found. We found significant XO activity increase at subchronic 10 and 20 ppm groups. Conclusion: We suggest that enzymatic antioxidant system of rat lungs were affected adversely from inhalation of FA. MDA levels suggests the importance of FA dosage on lipid peroxidation and NO levels suggests the importance of. FA exposure period on oxidative stress of lung tissue.

Özet

Amaç: Formaldehit (FA) irrite edici ve zehirli bir gazdır. Aldehit ailesinin en önemli üyesidir. FA anatomi, patoloji ve histoloji laboratuvarlarinda tahnit ve dezenfeksiyon işlemlerinde kullanılır. Bu çalışmada, subakut ve subkronik periyotlarda solunan FA'in akciğer dokusu enzim aktiviteleri ile MDA ve NO düzeylerine etkileri araştırılmıştır. Gereç ve yöntem: 60 adet erkek sıçan herbirinde 10 sıçan olmak üzere 6 gruba ayrıldı. Sıçanlar subakut (4 hafta) ve subkronik (13 hafta) olarak 0, 10 ve 20 ppm dozunda formaldehit gazına maruz bırakıldı Deneylerin sonunda sıçanlara eter anestezisi yapılarak dekapite edildi ve akciğer dokuları çıkarıldı. Homojenize edilerek biyokimyasal analizlerde kullanıldı. Bulgular: Akciğer dokusunda total SOD, CAT ADA, XO aktiviteleri ile MDA ve NO seviyeleri ölçüldü. Kontrol grubuna göre, subakut 10 ppm grubunda, SOD aktivitesinde anlamlı bir azalma saptandı. Subakut 20 ppm grubunda, CAT ve SOD aktivitelerinde belirgin bir azalma, MDA ve NOdüzeylerinde ise anlamlı bir artış vardı. Subkronik 10 ve 20 ppm gruplarında XO aktivitelerinde ve subkronik 20 ppm grubunda ise MDA ile NO seviyelerinde anlamlı artma tespit edildi. Sonuç: Sıçanların inhalasyon yoluyla formaldehite maruz bırakılması akciğerin enzimatik antioksidan sistemini olumsuz yönde etkilemektedir. MDA düzeylerinde ki artış, FA dozunun lipit peroksidasyonu üzerinde ve NO düzeylerindeki artış da, FA maruziyet süresinin oksidatif stres üzerinde etkili olduğunu düşündürmektedir.

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Cite This Article

SONGÜR, A., SÖGÜT, S., ÖZEN, O. A., YILMAZ, H. R., ÖZYURT, H. (2004). The activities of catalase, superoxide dismutase, adenosine deaminase, xanthine oxidase enzymes and levels of malondialdehyde and nitric oxide in lung tissue of rats exposed to subacute and subchronic formaldehyde. Tıp Araştırmaları Dergisi, Cilt: 2 - Sayı: 3, 31–36. https://ajindex.com/articles/361761

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