Neurogenic vasoconstriction of pial arterial vessels of various branching orders in normotensive and spontaneously hypertensive rats.
Intravital television microscopy was employed to study the reaction of pial arteries in normotensive and spontaneously hypertensive rats to stimulation of the superior cervical ganglion. The amplitude of constrictor response was similar in WKY and SHR animals. Under conditions of normal arterial pressure and arterial hypertension, the maximum constrictor effect was attained due to equal involvement of the arteries from all generations in the normotensive rats and predominant constriction of the precortical arterioles in SHR animals.
Ryzhikova
O P
OP
Laboratory of Blood Circulation Physiology, I P Pavlov Institute of Physiology, Russian Academy of Sciences, St Petersburg.
Shuvaeva
V N
VN
Dvoretskii
D P
DP
D000818:Animals; D001794:Blood Pressure / Q000502:physiology*; D002536:Cerebral Arteries / Q000294:innervation*; D004594:Electrophysiology; D006973:Hypertension / Q000503:physiopathology; D010841:Pia Mater / Q000098:blood supply*; D051381:Rats; D011918:Rats, Inbred SHR; D011921:Rats, Inbred WKY; D017783:Superior Cervical Ganglion / Q000502:physiology*; D014661:Vasoconstriction / Q000502:physiology*