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Int. J. Mol. Sci. 2010, 11(11), 4426-4440; doi:10.3390/ijms11114426

Effect of Gadolinium Chloride on Liver Regeneration Following Thioacetamide-Induced Necrosis in Rats

Área Académica de Farmacia, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, 42080 Pachuca de Soto, Hgo, Mexico
Instituto de Bioquímica (CSIC–UCM), Facultad de Farmacia, Ciudad Universitaria, Plaza de Ramón y Cajal S/N, 28040 Madrid, Spain
Author to whom correspondence should be addressed.
Received: 1 October 2010 / Revised: 19 October 2010 / Accepted: 19 October 2010 / Published: 4 November 2010
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
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Gadolinium chloride (GD) attenuates drug-induced hepatotoxicity by selectively inactivating Kupffer cells. The effect of GD was studied in reference to postnecrotic liver regeneration induced in rats by thioacetamide (TA). Rats, intravenously pretreated with a single dose of GD (0.1 mmol/Kg), were intraperitoneally injected with TA (6.6 mmol/Kg). Hepatocytes were isolated from rats at 0, 12, 24, 48, 72 and 96 h following TA intoxication, and samples of blood and liver were obtained. Parameters related to liver damage were determined in blood. In order to evaluate the mechanisms involved in the post-necrotic regenerative state, the time course of DNA distribution and ploidy were assayed in isolated hepatocytes. The levels of circulating cytokine TNFα was assayed in serum samples. TNFα was also determined by RT-PCR in liver extracts. The results showed that GD significantly reduced the extent of necrosis. The effect of GD induced noticeable changes in the post-necrotic regeneration, causing an increased percentage of hepatocytes in S phase of the cell cycle. Hepatocytes increased their proliferation as a result of these changes. TNFα expression and serum level were diminished in rats pretreated with GD. Thus, GD pre-treatment reduced TA-induced liver injury and accelerated postnecrotic liver regeneration. No evidence of TNFα implication in this enhancement of hepatocyte proliferation and liver regeneration was found. These results demonstrate that Kupffer cells are involved in TA-induced liver damage, as well as and also in the postnecrotic proliferative liver states.
Keywords: gadolinium chloride; kupffer cells; thioacetamide hepatotoxicity; cell cycle gadolinium chloride; kupffer cells; thioacetamide hepatotoxicity; cell cycle
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Bautista, M.; Andres, D.; Cascales, M.; Morales-González, J.A.; Sánchez-Reus, M.I. Effect of Gadolinium Chloride on Liver Regeneration Following Thioacetamide-Induced Necrosis in Rats. Int. J. Mol. Sci. 2010, 11, 4426-4440.

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