Résumé
Present study was undertaken to study the correlation of potassium level of vitreous humor with time since death. Vitreous was collected from 150 medicolegal autopsy cases between August 2000 to March 2001 in Bharatpur Hospital, Bharatpur, Chitwan, Nepal. There was a linear increase in vitreous potassium level with rise of postmortem interval. This indicates that rise in potassium levels after death has a strong correlation with the PMI.
Sujets)
Adulte , Femelle , Humains , Mâle , Modifications postmortem , Potassium/métabolisme , Corps vitré/composition chimiqueRésumé
Intravenous veratrine induced alterations in cardiovascular parameters in cats were used as a tool for assessing the influence of central alpha-adrenoceptors over reflex adjustments in the heart rate and blood pressure. Blockade of central alpha 2-adrenoceptors with idazoxan or yohimbine, inhibited, while their activation by clonidine, as also blockade of alpha 1-adrenoceptors, with prazosin, potentiated the veratrine induced bradycardia. The hypotensive effect was relatively unaltered by these treatments. Low doses of clonidine potentiated the veratrine-induced bradycardia. It appears that alpha 2-adrenoceptor mechanisms exert greater control over the reflex regulation of heart rate than over reflex control of blood pressure.