[Contractile function of vessel myocytes: dependence on the stretch magnitude].
The values of the optimal stretch for the maximal responses of the rat mesenteric artery ring to electrical field stimulation (FES) or noradrenaline as well as for the maximal myogenic responses, tone, and maximal changes in these responses produced by low pH and dynamic sinusoidal stretch of the vessel wall were compared. The findings show that the magnitude of stretch corresponding to the maximal effect depend on the character of responses, on the factor, and on the responses occurrence conditions.
Dvoretskiĭ
D P
DP
I. P. Pavlov Institute of Physiology, Russian Acad. Sci., St. Petersburg, 199034, Nab. Makarova, 6, Russia.
Karachentseva
O V
OV
Iartsev
V N
VN
D000818:Animals; D002245:Carbon Dioxide / Q000494:pharmacology; D004558:Electric Stimulation; D004791:Enzyme Inhibitors / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D066298:In Vitro Techniques; D008297:Male; D008638:Mesenteric Arteries / Q000166:cytology / Q000502:physiology; D009119:Muscle Contraction; D009129:Muscle Tonus / Q000187:drug effects; D009131:Muscle, Smooth, Vascular / Q000166:cytology / Q000502:physiology*; D019001:Nitric Oxide Synthase / Q000037:antagonists & inhibitors; D019335:Nitroarginine / Q000494:pharmacology; D009638:Norepinephrine / Q000494:pharmacology; D051381:Rats; D017208:Rats, Wistar; D013314:Stress, Mechanical
D004791:Enzyme Inhibitors; D002245:Carbon Dioxide; D019335:Nitroarginine; D019001:Nitric Oxide Synthase; D009638:Norepinephrine
Kontraktil'naia funktsiia sosudistykh miotsitov: zavisimost' ot stepeni ikh predstimul'nogo mekhanicheskogo rastiazheniia.