Steroid Growth Promoter Modified Glucose Profile and Liver Morphology in Broiler by Altering the Localization and Expression Pattern of Hepatic Glucocorticoid Receptors.
Social Science Research Network(2022)
摘要
This study explores the impact of dexamethasone (DEX) on the serum glucose profile, morphological attributes of the liver, and the expression of hepatic glucocorticoid receptors (GRs) in the broiler. To conduct this study, four homogenous groups of day-old chicks (DOCs) were used (n = 20 chicks per group); one control group (C), and three treatment groups (T1, T2, and T3). All the groups were maintained on a commercial feed with which 3, 5, and 7 mg DEX (per kg feed) were supplied to the T1, T2, and T3 groups, respectively. Samples were collected on days 7, 14, 21, and 28 of the experiment. The serum glucose profile was measured by spectrophotometry. The livers' morphometric attributes were recorded before being processed and stained with hematoxylin and eosin. The expression pattern of hepatic GR proteins was evaluated by immunohistochemical staining. DEX residue was detected in liver tissue using thin-layer chromatography. Increased serum glucose level was observed in the DEX groups. Fatty liver, hepatic congestion, and decreased morphometric attributes were the critical findings in the DEX groups. Congestion of the central veins, sinusoids, and accumulation of lipid droplets was also observed in the DEX groups. GR proteins were mostly localized in the central vein and cytoplasm of the hepatocytes, the expression of which was found to be upregulated with the increased dose of DEX. The residue of DEX was detected in the liver tissues in the higher dose groups. The findings imply that DEX can substantially alter the blood glucose profile and liver morphology.
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关键词
Broiler,Liver,Biochemistry,Histology,Immunohistochemistry,Thin layer chromatography
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