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  • Title: Effect of mercuric chloride on urinary excretion of free hydroxyproline.
    Author: Siddiqi NJ, Alhomida AS.
    Journal: Med Sci Monit; 2006 Mar; 12(3):BR95-101. PubMed ID: 16501418.
    Abstract:
    BACKGROUND: The present study was undertaken to study the effect of mercuric chloride (HgCl2) on the collagen metabolism in rats and the protective effect of 2, 3-dimercapto-1-propane sulfonic acid (DMPS) in HgCl2-treated rats. MATERIAL/METHODS: The experimental groups studied were (i) a control group (ii) rats injected with a single intraperitoneal (ip) dose of 2 mg of HgCl2/kg body weight (HgCl2-treated group, n=10 rats), (iii) Rats injected with a single dose (ip) of 100 mg of DMPS/kg body weight (DMPS group, n=10 rats), (iv) rats injected with a single dose (ip) of 100 mg of DMPS/kg body weight followed by a single dose (ip) of 2 mg of HgCl2/kg body weight 1 hour after a 100-mg DMPS injection (DMPS + HgCl2-treated group, n=10 rats). Half of the rats from each group were sacrificed after 24 hours and the other half after 48 hours of treatment. RESULTS: A dose of 2.0 mg HgCl2/kg body weight caused an impairment of glomerular function, which was reflected by significant increases in the levels of serum creatinine and serum urea nitrogen in HgCl2-treated rats compared with control rats. Administration of 2.0 mg of HgCl2/kg body weight significantly increased urinary excretion of free hydroxyproline in HgCI2-treated rats compared with the control rats, reflecting increased collagen breakdown. CONCLUSIONS: Administration of DMPS one hour before HgCl2 treatment caused the restoration of altered parameters to near normal levels.
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