Vitamin A modulation of xenobiotic-induced hepatotoxicity in rodents.
نویسندگان
چکیده
Vitamin A (VA, retinol) has been shown to modulate cells of the immune system. When rats are pretreated with VA (75 mg/kg/day) for 7 days, there is greatly potentiated liver damage upon subsequent exposure to hepatotoxicants such as CCl4. This potentiated damage can be blocked by superoxide dismutase or catalase, suggesting that reactive oxygen species are playing a major role in the increased liver injury. The studies reported here examined VA-induced modulation of CCl4 hepatotoxicity in different strains of male rats, female rats, and different strains of male mice. Also, the role of VA-induced weight loss on potentiation of CCl4 injury was investigated. Rats or mice were dosed with VA (retinol) at 75 mg/kg/day, po, for 7 days. In an additional VA dose-response study, mice were given VA at 18.8, 37.5, or 75 mg/kg/day, po, for 7 days. On day 8 they were given a dose of CCl4 which elicited mild hepatic damage. On day 9 they were necropsied. Male and female Sprague-Dawley rats, and male Fischer-344 and athymic nude rats pretreated with VA had an approximately 10-fold increase in liver damage as compared to vehicle controls. Pretreatment of male Balb/C, C3H/HeJ, Swiss-Webster, or athymic nude mice resulted in a marked reduction of CCl4-induced hepatic damage. In the dose-response study in mice, increasing doses of VA elicited increasing amounts of protection from CCl4-induced liver injury. Paired feeding studies revealed that VA-induced weight loss (or decreased weight gain) had no effect on subsequent VA-induced potentiation (rats) or protection (mice) from hepatic damage caused by CCl4.(ABSTRACT TRUNCATED AT 250 WORDS)
منابع مشابه
Protective Effect of N-Acetyl Cysteine in Carbon Tetrachloride-Induced Hepatotoxicity in Rats
The present study determines the efficacy of N-acetyl cysteine (NAC) on marker enzymes, lipid peroxidation and antioxidants in carbon tetrachloride induced hepatotoxicity in rats. Carbon tetrachloride (CCl4) (3 mL/kg/week) administered subcutaneously to albino Wistar rats for a period of three months significantly increased the activities of marker enzymes in plasma such as aspartate transamina...
متن کاملEffects of Pistacia Vera Hydro-Alcoholic Extract on Carbon Tetrachloride-Induced Hepatotoxicity in Male Rats
Oxidizing agents play a major role in the pathogenesis of liver diseases. Pistacia vera (P. vera), contains many antioxidant substances including coenzyme 10, vitamin E and beta-carotene. The current study was designed to evaluate the probable effects of P. vera on carbon tetrachloride (CCl4)-induced hepatotoxicity in male rats. Frothy male Wistar rats were randomly divided into five groups inc...
متن کاملThe protective effects of naringin against 5-fluorouracil-ınduced hepatotoxicity and nephrotoxicity in rats
Objective(s): 5-FU, an anticarcinogenic agent, is reported to have side-effects that include hepatotoxicity and nephrotoxicity. The study objective was to investigate the protective effects of naringin on 5-FU-induced hepatotoxicity and nephrotoxicity.Materials and Methods: Thirty rodents were assigned to three groups. The control group received 1 ml of intragastric distilled water for 14 days....
متن کاملProtective Effect of Berberis integerrima Fruit Extract on Carbon-Tetrachloride Induced Hepatotoxicity in Rats
Background & Objective: Hepatoprotective effect of antioxidants such as flavnoids has been demonstrated. The aim of the present study was to assess the hepatoprotective effect of the methanolic extract of Berberis integerrima fruit (MEBIF) on carbon-tetrachloride (CCL4) induced hepatotoxicity in rats. Materials & Methods: Forty male rats were divided into 5 groups as follows: 1) normal, 2) toxi...
متن کاملThe protective effects of Curcuma longa extract on oxidative stress markers in the liver induced by Adriamycin in rat
Introduction: The aim of the study was to investigate the effects of Curcuma longa (C. longa) extract on Adriamycin-induced hepatotoxicity in rat. Methods: Animals were divided in six groups: Control (CO), Adriamycin (ADR), Adriamycin with Vitamin C (ADR+VitC), Vitamin C (Vit C), C. longa with Adriamycin (CL+ADR) and without Adriamycin (CL-ADR). Hepatotoxicity was induced by Adriamycin 5mg/kg ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Environmental Health Perspectives
دوره 102 شماره
صفحات -
تاریخ انتشار 1994