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Electrical stimulation of hypothalamic “feeding areas” (VMH & LHA) through stereotaxically implanted electrodes was carried
out in normal and streptozotocinized diabetic conscious male rhesus monkeys. In normal monkeys, the VMH stimulation resulted
in a significant decrease in serum insulin and blood glucose while opposite responses were observed following LHA stimulation.
Serum growth hormone, FFA and plasma cortisol levels increased significantly on stimulation of LHA and VMH in normal animals.
The pattern of blood glucose and serum growth hormone responses to stimulation of “feeding areas” was similar in normal and
diabetic animals. The serum insulin, FFA and plasma cortisol were largely unaffected while growth hormone increased significantly
by stimulation of these areas in diabetes. The present study indicates that the stimulation of “feeding areas” does not alter
the diabetic syndrome significantly nor does diabetes prevent the changes in metabolism seen after stimulation of “feeding
areas.” 相似文献
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Rapid eye movement sleep deprivation for 3 to 4 days by the platform pedestal procedure produced an increase in sexual behaviour of male rats. The possible factors contributing towards the increase in sexual behaviour are discussed. 相似文献
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Shashi Dhingra B. Bhatia G. S. Chhina Baldev Singh 《International journal of biometeorology》1987,31(3):191-199
Freezing incidence and tissue loss on exposure of hind limbs of female Wistar rats to freezing mixture was reduced by demedullation 6 days prior to cold exposure (p<0.01 and p<0.001 respectively); demedullation 1 h after freezing injury had no effect on tissue loss. Noradrenaline (1 mg/kg i.p.) 5 min before exposure increased the freezing incidence in intact (p<0.05) as well as in demedullated rats (p<0.01), with no effect on tissue loss. Adrenaline (500 mg/kg i.p.) had no effect on either. A sustained fall in plasma adrenaline after demedullation leading to reduced reactivity of the blood vessels to some vasoactive agents is postulated. 相似文献
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