Effects of nitrite exposure on biochemical parameters and liver histopathology in American bullfrogs (Aquarana catesbeiana)
文献类型： 外文期刊
作者： Chen, Qiuyu 1 ; Zheng, Xiaoting 2 ; Kumar, Vikash 4 ; Liang, Xueying 2 ; Dong, Hongbiao 2 ; Huang, Jianhua 1 ; Zhang, Jiasong 1 ;
作者机构： 1.Dalian Ocean Univ, Coll Fisheries & Life Sci, Dalian 116023, Peoples R China
2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab South China Sea Fishery Resources Exploita, Minist Agr & Rural Affairs, Guangzhou 510300, Peoples R China
3.Sanya Trop Fisheries Res Inst, Sanya 572018, Peoples R China
4.ICAR Cent Inland Fisheries Res Inst CIFRI, Aquat Environm Biotechnol & Nanotechnol AEBN Div, Barakpur 700120, India
5.Chinese Acad Fishery Sci, Shenzhen Base South China Sea Fisheries Res Inst, Shenzhen 518121, Peoples R China
关键词： Amphibians; Nitrite; Hepatotoxicity; Histopathology; Oxidative stress
期刊名称：AQUACULTURE INTERNATIONAL （ 影响因子：2.2； 五年影响因子：2.5 ）
ISSN： 0967-6120
年卷期： 2024 年
页码：
收录情况： SCI
摘要： Nitrite one of the most common contaminants affecting aquatic species. In this study, we investigated the biochemical markers and histopathological changes in the liver of the American bullfrog (Aquarana catesbeiana) exposed to nitrite at different concentrations (0, 5, 10, and 15 mg/L) for 96 h. Results revealed that blood biochemical markers such as alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma-glutamyl transferase (GGT), alkaline phosphatase (ALP), and lactate dehydrogenase (LDH) were significantly increased in the American bullfrog groups exposed to nitrite. Additionally, there was a significant increase in the activities of antioxidative enzymes such as total antioxidant capacity (T-AOC), superoxide dismutase (SOD), lactate dehydrogenase (LDH), and glutathione S-transferase (GST) in the liver. Furthermore, the liver tissue of bullfrogs exposed to nitrite exhibited pronounced inflammatory infiltration, increased melano macrophage density, vacuolization, and shrinkage of hepatocytes. This study provided an avenue to understand the sensitivity of the American bullfrog to nitrite, suggesting irreversible liver damage even at low nitrite concentrations (5 mg/L). The results underscore the potential harm of nitrites to bullfrogs, contributing to optimized management strategies in American bullfrog farming.
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