Hypercapnic acidosis and increased H2PO4- concentration do not decrease force in cat skeletal muscle.
Hypercapnic acidosis and increased H2PO4- concentration do not decrease force in cat skeletal muscle.
复制标题
高碳酸血症和磷酸浓度增加不会降低猫骨骼肌的力量。
DOI:
10.1152/ajpcell.1991.260.4.c805
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发表时间:
1991
期刊:
影响因子:
--
通讯作者:
Meyer,RA
中科院分区:
文献类型:
--
作者:
Adams,GR;Fisher,MJ;Meyer,RA
Peak tetanic tension was measured during acidosis resulting from either hypercapnia or repetitive tetanic stimulation in isolated, arterially perfused cat biceps brachii (predominantly fast twitch) or soleus (slow twitch) muscles. Phosphocreatine (PCr), Pi, intracellular pH (pHi), and extracellular pH (pHo) were monitored by 31P-nuclear magnetic resonance spectroscopy. During repetitive stimulation under normocapnic conditions (5% CO2, pHo 7.4) Pi increased, pHi decreased from 7.1 to 6.3, and there were significant correlations between both pHi and calculated [H2PO4-] vs. peak tetanic force in both muscle types. However, hypercapnic perfusion (70% CO2, pHo, 6.7, pHi 6.4-6.5) had no effect on peak tetanic force, and there was no significant correlation between pHi or [H2PO4-] during hypercapnia in either muscle. The results indicate that decreased peak tetanic force during repetitive stimulation is not directly due to changes in pHi or diprotonated phosphate.
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影响因子:
4.1
作者:
E. Shoubridge;R. Challiss;D. J. Hayes;G. Radda
通讯作者:
G. Radda
DOI:
10.1113/jphysiol.1988.sp016952
发表时间:
1988
期刊:
The Journal of Physiology
影响因子:
--
作者:
N. Curtin;K. Kometani;R. Woledge
通讯作者:
R. Woledge
DOI:
--
发表时间:
1989
期刊:
Journal of Physiology
影响因子:
--
作者:
J. Lännergren;H. Westerblad
通讯作者:
H. Westerblad
DOI:
10.1126/science.3563496
发表时间:
1987
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Nosek,TM;Fender,KY;Godt,RE
通讯作者:
Godt,RE
DOI:
10.1152/jappl.1985.59.6.1991
发表时间:
1985
期刊:
Journal of applied physiology (Bethesda, Md. : 1985)
影响因子:
--
作者:
Lewis,SF;Haller,RG;Cook,JD;Nunnally,RL
通讯作者:
Nunnally,RL