[Parathyroid hormone and the contractile activity of the portal vein in normo- and hypertensive rats].
The parathyroid hormone controls phasic and tonic components of the portal vein contraction in spontaneously hypertensive (SHR) and normotensive Wistar-Kyoto rats (WKL). The main effect involves the hormone influence on the vessel tone. Sharp increase of the portal vein tonic tension was followed by its drop to initial level and lower in WKL, whereas a decrease in the contraction tonic component only occurred in SHR. The amplitude of the portal vein phasic tension decreased both in WKL and SHR. The mechanism of the hormone effect upon the level of intracellular ionised calcium is suggested.
Barabanova
V V
VV
Shaliapina
V G
VG
D000818:Animals; D008297:Male; D010281:Parathyroid Hormone / Q000502:physiology*; D011169:Portal Vein / Q000502:physiology*; D051381:Rats; D011918:Rats, Inbred SHR; D011921:Rats, Inbred WKY; D014661:Vasoconstriction
D010281:Parathyroid Hormone
Paratireodinyĭ gormon i sokratitel'naia aktivnost' vorotnoĭ veny normo- i gipertenzivnykh krys.