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We examined the influence of ageing and gender on the activity of dihydropyrimidine dehydrogenase (DPD) in male and female Sprague-Dawley rats at 3, 8, 40 and older than 60 weeks of age. The body and liver weights of male rats at 8 weeks and older of age were heavier than those of female rats at the same age and the ratio of liver to body weight was significantly reduced with ageing. The amount of...
The growth hormone-releasing peptide Hexarelin (Hexa; 80 μg/kg −1 , s.c.) was administered for 30 and 60 days to old rats. The GH-releasing effect of Hexa was maintained during chronic treatment. At the end of the treatment, old rats were administered once with Hexa which elicited a greater GH response in rats chronically treated with the peptide than in those receiving a placebo. Pituitary...
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