RhTPO promotes liver regeneration in rats with acute liver failure
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo Sapiens
SUBMITTER: 
Yongping Lu
PROVIDER: PXD072506 | iProX | Mon Dec 29 00:00:00 GMT 2025
REPOSITORIES: iProX
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Project description:Objective: The present study is aimed to study the liver injury in xylazine poisoning and uncover the underlying mechanism. Method: Forty male SD rats were randomly dived into four groups, control (saline), low dose (10mg/kg xylazine), median dose (20mg/kg xylazine) and high dose (40mg/kg xylazine). And the rats were injected the drug intraperitoneal continuous 28 days, and then collected serum and liver tissues, Elisa, RNA sequencing, histopathology examination, RT-qPCR were performed. Results: Compared to the control group, the body weight of 40mg/kg group was decreased, the level of ALT and AST in serum of 40mg/kg group was increased. Histopathological examination showed fatty degeneration, necrosis and fibrosis of the liver. 192 up-regulated and 277 down-regulated genes were identified through RNA sequencing in the 40mg/kg group and the PPAR signaling pathway ranked first in the KEGG pathway analysis, The common DEG in the 10mg/kg and 40mg/kg (Lox), four common DEGs in the 20mg/kg and 40mg/kg (Srebf1, Nr1dl, Fasn, SCD1), and four genes PCK1, FABP5, ACOX2, CPT2 in the PPAR signaling pathway in the 40mg/kg group were validated through Real-Time PCR Analysis. Conclusion：Long term xylazine injection can cause liver injury and the PAPR signaling pathway play a core role in the process of xylazine related liver injury.
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Project description:E2 and GH are critical regulators of growth and intermediate metabolism in mammals. Hypothyroidism causes endocrine and metabolic disturbances in the liver with features that mimic deficiencies of E2 or GH signalling. In this work, we used the hypothyroid-orchiectomized (TXOX) adult rat model to evaluate the influence of E2 and GH on the liver in terms of global changes in gene expression. This study shows the changes in hepatic transcriptome that were provoked by E2 benzoate (50 ug/kg; sc; 5 days per week x 27 days), intermittent GH administration (0.3 mg/kg/day;sc injection divided into two daily injections x 7 days) or the combination of E2 plus GH in TXOX rats. E2 influenced the liver transcriptome, particularly genes involved in metabolism of lipids and endo-xenobiotics, and the GH-regulated endocrine, metabolic, gender, and immune responses. E2 did not prevent the inhibitory effects of GH on urea and amino acid metabolism-related genes. Notably, the combination of E2 and GH caused deleterious effects on transcriptional immune response. These results highlight the role of E2 as a critical regulator of liver metabolism in mammals and provide insights into the functional interplay between E2 and GH in the liver. Groups=4; Biological replicates = 4 per group; Samples=16; Reference samples=TXOX group. Adult (3 months old) male Sprague-Dawley rats (n=4 per group) were used throughout these experiments. The generation of TXOX was performed by adding methimazole (MMI; 0.05%) to the drinking water for 5 weeks starting on postnatal day (PND) 59 until sacrifice on PND94. Two weeks after starting MMI administration, male rats were castrated (OX) to make TXOX rats. Four days after OX, we began treatment with E2 benzoate (TXOXE2) or vehicle (TXOX) to TXOX rats for 20 days followed for 7 days by either vehicle plus GH (TXOXGH) or by E2 plus GH (TXOXE2GH). Twenty-four hours (in the case of E2) or twelve hours (in the case of GH) after the last injection, the animals were killed by exsanguinations. Portions of the liver were snap frozen in liquid nitrogen and stored at -80C until processed for mRNA analysis.
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Project description:We aimed to address the challenge of accommodating an increasing demand for aged laboratory animals in the context of rising elderly population and research on aging-related diseases. We developed a cost-effective environmental enrichment method and assessed its impact on metabolic changes in Sprague Dawley rats' livers as a proof-of-concept organ. Twenty-four male rats were divided into four groups, with two kept in standard cages and two in modified rabbit cages. Half of each type of cage group received additional enrichment through weekly playtime in a larger cage. Over six months, the rats' weight gain was consistent across all groups, and corticosterone levels did not significantly differ. However, the control group had significantly lower DHEA and Testosterone levels at the study's end. Rats in enriched environments exhibited less distress during inspections and were more resistant to accepting treats. Animals accustomed to playpen time left their cages more easily. Overall, the study demonstrated that refining husbandry for aging rats is both simple and cost-effective, without detrimental effects on stress levels, development, or liver metabolism.
2024-01-22 | PXD046110 | Pride
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