The Effect of Cysteamine Bitartrate on Adiponectin Multimerization in Non-Alcoholic Fatty Liver Disease and Healthy Subjects
The Journal of Pediatrics, 06/01/2012
Dohil R et al. – Cysteamine impacts adiponectin multimerization. Long–term cysteamine therapy increases levels of all multimers, whereas, in vitro short–term exposure causes a rapid increase in LMW and reduction in MMW multimers in nonalcoholic fatty liver disease (NAFLD) and healthy controls. Cysteamine may be a potential therapeutic agent for conditions associated with insulin–resistance, oxidative stress, and depressed adiponectin levels.
Sera from 10 children with biopsy-proven NAFLD treated with cysteamine were assayed for adiponectin multimers at baseline, after 24 weeks of treatment, and again 16 weeks after discontinuing treatment.
Pretreatment sera from subjects with NAFLD and from adult controls without NAFLD controls (n = 8) were incubated in cysteamine and multimers were measured 1 hour later.
A cysteamine/adiponectin multimer dose-response curve was created.
Following 24 weeks of cysteamine therapy, the mean percentage increase for high, medium (MMW), and low (LMW) molecular weight multimers and total adiponectin from baseline was 53% (P = .02), 19% (P = .02), 29.4% (P = .03), and 49.3% (P = .05), respectively.
Levels returned to baseline at 16 weeks after stopping therapy, unlike hepatic transaminase levels which remained low.
Sera from 0 week, incubated in cysteamine for 1 hour, showed a significant mean percent increase in LMW adiponectin levels and a mean percent reduction in MMW levels compared with baseline in adults with and without NAFLD.
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