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• W2011781640 abstract "Background/Aims The portacaval anastamosis (PCA) rat is a model of the nutritional and endocrine consequences of liver cirrhosis. We hypothesized that failure to gain body weight in the PCA rat was the consequence of low testosterone levels and will be reversed by 4-hydroxyandrostenedione, a specific aromatase inhibitor. Methods Male Sprague–Dawley rats subjected to an end-to-side PCA or sham surgery were administered either 4-hydroxyandrostenedione or vehicle. Food intake, food efficiency, and body weight were measured, animals sacrificed 3 weeks after surgery, visceral organs harvested and plasma sex steroids measured. Hepatic RNA was extracted and dot blots done to quantify the expression of sex hormone dependent enzymes 16α hydroxylase and 15β hydroxylase. Results Growth, food intake, food efficiency and plasma testosterone were lower and plasma estradiol higher in PCA than sham rats. Hepatic expression of testosterone driven 16α hydroxylase was lower and estradiol driven 15β hydroxylase higher in PCA rats. These alterations were reversed by 4-hydroxyandrostenedione. Conclusions These observations demonstrate that use of aromatase inhibitor reverses the nutritional and endocrine abnormalities in the PCA rat and suggest that this approach may be useful in cirrhotic patients. The portacaval anastamosis (PCA) rat is a model of the nutritional and endocrine consequences of liver cirrhosis. We hypothesized that failure to gain body weight in the PCA rat was the consequence of low testosterone levels and will be reversed by 4-hydroxyandrostenedione, a specific aromatase inhibitor. Male Sprague–Dawley rats subjected to an end-to-side PCA or sham surgery were administered either 4-hydroxyandrostenedione or vehicle. Food intake, food efficiency, and body weight were measured, animals sacrificed 3 weeks after surgery, visceral organs harvested and plasma sex steroids measured. Hepatic RNA was extracted and dot blots done to quantify the expression of sex hormone dependent enzymes 16α hydroxylase and 15β hydroxylase. Growth, food intake, food efficiency and plasma testosterone were lower and plasma estradiol higher in PCA than sham rats. Hepatic expression of testosterone driven 16α hydroxylase was lower and estradiol driven 15β hydroxylase higher in PCA rats. These alterations were reversed by 4-hydroxyandrostenedione. These observations demonstrate that use of aromatase inhibitor reverses the nutritional and endocrine abnormalities in the PCA rat and suggest that this approach may be useful in cirrhotic patients." @default.
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• W2011781640 date "2006-08-01" @default.
• W2011781640 modified "2023-10-06" @default.
• W2011781640 title "Inhibition of aromatase improves nutritional status following portacaval anastomosis in male rats" @default.
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• W2011781640 doi "https://doi.org/10.1016/j.jhep.2006.02.016" @default.
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