Angiotensin II binding sites in the superior cervical ganglia of spontaneously hypertensive and Wistar-Kyoto rats after preganglionic denervation.
In the superior cervical ganglia (SCG) binding site density of angiotensin II (ANG II) was higher in adult spontaneously hypertensive rats (SHR) (571 +/- 29 fmol/mg protein) compared to that in the adult Wistar-Kyoto rat (WKY) (375 +/- 9 fmol/mg protein, P less than 0.05). The ANG II binding density was significantly decreased in the SCG of SHR (-59%, P less than 0.01) and of WKY (-39%, P less than 0.05) after unilateral preganglionic denervation (operated v sham-operated ganglia). Part of the binding sites in the superior cervical ganglia may be present in or be associated to preganglionic nerves, and the number of these sites is higher in SHR.
Pinto
J E
JE
Laboratory of Clinical Science, National Institute of Mental Health, Bethesda, Maryland 20892.
Nazarali
A J
AJ
Saavedra
J M
JM
D000804:Angiotensin II / Q000378:metabolism*; D000818:Animals; D001345:Autoradiography; D001665:Binding Sites; D003714:Denervation; D005728:Ganglia, Sympathetic / Q000033:anatomy & histology* / Q000502:physiology; D008297:Male; D051381:Rats; D011918:Rats, Inbred SHR; D011921:Rats, Inbred WKY; D012084:Renin-Angiotensin System
D000804:Angiotensin II