Ca concentration and flux in Ca-deprived arteries
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چکیده
منابع مشابه
Adrenergic stimulation of rat resistance arteries affects Ca(2+) sparks, Ca(2+) waves, and Ca(2+) oscillations.
Confocal laser scanning microscopy and fluo 4 were used to visualize local and whole cell Ca(2+) transients within individual smooth muscle cells (SMC) of intact, pressurized rat mesenteric small arteries during activation of alpha1-adrenoceptors. A method was developed to record the Ca(2+) transients within individual SMC during the changes in arterial diameter. Three distinct types of "Ca(2+)...
متن کاملAdrenergic stimulation of rat resistance arteries affects Ca 2 1 sparks , Ca 2 1 waves , and Ca 2 1 oscillations
Mauban, Joseph R. H., Christine Lamont, C. William Balke, and W. Gil Wier. Adrenergic stimulation of rat resistance arteries affects Ca21 sparks, Ca21 waves, and Ca21 oscillations. Am J Physiol Heart Circ Physiol 280: H2399–H2405, 2001.—Confocal laser scanning microscopy and fluo 4 were used to visualize local and whole cell Ca21 transients within individual smooth muscle cells (SMC) of intact,...
متن کاملCa-Ca interaction in inverse sandwich Ca-C8H8-Ca.
The inverse sandwich Ca-C8H8-Ca is predicted to be an open-shell singlet state. Since the C8H8 ligand prevents the spin-up and spin-down electrons of different calcium atoms from forming Ca-Ca bonds, the spin-coupling electrons lead to a singlet diradical character. The metal-ligand interaction contributes to the stability of Ca-C8H8-Ca against dissociation and isomerization. For the coordinati...
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Ca release through ryanodine receptors (RyRs) in the sarcoplasmic reticulum is a key element of excitation-contraction coupling in muscle. In arterial smooth muscle, Ca release through RyRs activates Ca-sensitive K (KCa) channels to oppose vasoconstriction. Local Ca 21 transients (“Ca sparks”), apparently caused by opening of clustered RyRs, have been observed in smooth and striated muscle. We ...
متن کاملAlkaline pH shifts Ca sparks to Ca waves in smooth muscle cells of pressurized cerebral arteries
Heppner, Thomas J., Adrian D. Bonev, L. Fernando Santana, and Mark T. Nelson. Alkaline pH shifts Ca2 sparks to Ca2 waves in smooth muscle cells of pressurized cerebral arteries. Am J Physiol Heart Circ Physiol 283: H2169–H2176, 2002; 10.1152/ajpheart.00603.2002.—The effects of external pH (7.0–8.0) on intracellular Ca2 signals (Ca2 sparks and Ca2 waves) were examined in smooth muscle cells from...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1972
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1972.sp009880