Title : Abnormal suppression of arginine-vasopressin by clonidine in multiple system atrophy.

Pub. Date : 1999 Oct

PMID : 10580879






4 Functional Relationships(s)
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1 In normal man, the centrally active alpha2-adrenoceptor agonist clonidine reduces arginine-vasopressin (AVP) secretion, probably by presynaptic inhibition of noradrenergic neuron terminals in the supraoptic nucleus. Clonidine arginine vasopressin Homo sapiens
2 We hypothesized that the AVP response to clonidine in MSA may be abnormal and therefore studied the AVP response to clonidine (2 microg/ kg iv) in 10 subjects with MSA and compared them to six healthy age-matched control subjects. Clonidine arginine vasopressin Homo sapiens
3 We hypothesized that the AVP response to clonidine in MSA may be abnormal and therefore studied the AVP response to clonidine (2 microg/ kg iv) in 10 subjects with MSA and compared them to six healthy age-matched control subjects. Clonidine arginine vasopressin Homo sapiens
4 In conclusion, there is an abnormal AVP response to clonidine in MSA, which probably represents loss of functional noradrenergic innervation of the supraoptic nucleus. Clonidine arginine vasopressin Homo sapiens