ArticleHepatic medicine : evidence and research2025
Pharmacological Modulation of Liver and Spleen Stiffness in a Cirrhotic Rat Model.
Article in Hepatic medicine : evidence and research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Purpose: Liver stiffness (LS) assesses liver fibrosis, while spleen stiffness (SS) is a promising marker for portal hypertension (PH), reflecting blood flow and vascular resistance. However, the response of LS and SS to vasoactive drugs is unclear. This study evaluates the effects of various PH-lowering drugs on LS and SS in a rat cirrhosis model. Patients and Methods: In this study, cirrhosis was induced in 43 male Wistar rats (8 weeks old) via intraperitoneal thioacetamide (TAA) injections (200 mg/kg, twice weekly for six weeks). Rats were divided into six groups: control (sodium chloride), metoprolol, udenafil, enalapril, terlipressin, and carvedilol. LS and SS were measured using μFibroscan. Mean arterial pressure (MAP), heart rate (HR), and portal vein pressure (PVP) were continuously monitored. Drugs were administered systemically, with data collected at 0, 15, and 30 minutes. Results: TAA-treated rats exhibited significantly higher LS and SS compared to controls (22.1 vs 4.2 kPa and 53.7 vs 27.7 kPa; P < 0.001). Changes in LS and SS correlated with PVP (r = 0.670 for LS and r = 0.867 for SS; P < 0.01). Metoprolol, udenafil, enalapril, and carvedilol significantly reduced PVP (22-34%, P < 0.05), accompanied by decreases in LS and SS (13-37%, P < 0.05). Terlipressin did not reduce LS or SS, likely due to opposing effects of increased MAP and reduced PVP. Conclusion: In conclusion, combined LS and SS measurements may provide valuable non-invasive insights into patient responses and adherence to PH-lowering therapies.
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