首页> 外文期刊>Life sciences >Lack of sexual dimorphism in alcohol-induced liver damage (ALD) in rats treated chronically with ethanol-containing low carbohydrate diets: The role of ethanol metabolism and endotoxin.
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Lack of sexual dimorphism in alcohol-induced liver damage (ALD) in rats treated chronically with ethanol-containing low carbohydrate diets: The role of ethanol metabolism and endotoxin.

机译:长期用含乙醇低碳水化合物饮食治疗的大鼠酒精性肝损伤(ALD)中缺乏性二态性:乙醇代谢和内毒素的作用。

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摘要

Evidence has been presented suggesting that females are significantly more susceptible to alcohol-induced liver damage (ALD) than males. In the current study, we examined sexual dimorphism in hepatic pathology, metabolism and cytokine profiles using two different rat models of ALD. Male and female Sprague-Dawley or Wistar rats were fed ethanol-containing low-carbohydrate liquid diets using oral or intragastric methods for 42 or 60 days. In both models, ethanol treatment produced similar significant liver hyperplasia accompanied by increases in plasma ALT, steatosis, inflammation and necrosis (p < 0.05). Greater pathology scores were observed in the intragastrically infused rats. Males did not differ significantly from females in serum ALT values or pathology despite greater elevations in TNFalpha and IL-1beta mRNAs in ethanol-treated female rat livers (p < 0.05). Furthermore, there was no sexual dimorphism in blood ethanol concentrations or CYP2E1-induction even though sexually dimorphic alterations inother hepatic cytochrome P450 enzymes were observed. These data do not support previous observations that female rats have a greater susceptibility to ethanol-induced hepatotoxicity than males.
机译:已有证据表明,女性比男性更容易遭受酒精引起的肝损伤(ALD)。在当前的研究中,我们使用两种不同的ALD大鼠模型检查了肝病理,代谢和细胞因子谱中的性二态性。使用口服或胃内方法给雄性和雌性Sprague-Dawley或Wistar大鼠喂食含乙醇的低碳水化合物流质饮食,持续42或60天。在这两种模型中,乙醇治疗均产生相似的明显肝脏增生,并伴有血浆ALT升高,脂肪变性,炎症和坏死(p <0.05)。在灌胃大鼠中观察到更高的病理学评分。尽管乙醇处理的雌性大鼠肝脏中的TNFalpha和IL-1beta mRNA升高更大,但雄性在血清ALT值或病理学上与雌性没有显着差异(p <0.05)。此外,即使观察到其他肝细胞色素P450酶的性双态性改变,血液乙醇浓度或CYP2E1诱导也没有性双态性。这些数据不支持以前的观察结果,即雌性大鼠比雄性大鼠对乙醇诱导的肝毒性的敏感性更高。

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