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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Adrenalectomy reduces but does not reverse obesity in ob/ ob mice.

Bilateral adrenalectomy (ADX) of 4-month-old ob/ ob mice led to reduced rates of body weight gain, a complete cessation of fat deposition and increased percentage carcass protein and ash during a 2-month observation period after surgery. However, ADX obese mice were still heavier and had more body fat and lower concentrations of carcass protein and ash than intact sex-matched littermate lean mice at the end of the experiment. When adrenalectomy was performed in younger obese mice before the syndrome was fully expressed (23 +/- 2 days of age), body weight gain was reduced by 40 per cent and fat deposition by 50 per cent during the next 3.5 months, but each was still greater than that of littermate lean mice. Despite the lower rate of weight gain after adrenalectomy, the skeletal and lean body growth of the early ADX obese mice equalled that of both obese and lean mice fed ad libitum. When the carcass composition of early ADX obese mice was compared with that of intact obese mice which were calorically restricted to the same rate of body weight gain, the ADX group had significantly less carcass fat (28 per cent) and more protein (50 per cent) and ash (20 per cent) than the dieted obese mice. In both experiments adrenalectomy led to reduced circulating immunoreactive insulin levels, although hyperinsulinemia persisted. The present results show that adrenalectomy is an effective tool for ameliorating the severity of many aspects of the ob/ ob syndrome, particularly when compared with caloric restriction, but the procedure does not entirely reverse the deranged metabolism or abnormal carcass composition of these mice.[1]

References

  1. Adrenalectomy reduces but does not reverse obesity in ob/ob mice. Dubuc, P.U., Wilden, N.J. International journal of obesity. (1986) [Pubmed]
 
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