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Ca2+ release induced by cyclic ADP ribose in mice lacking type 3 ryanodine receptor
被引:6
|作者:
Fulceri, R
Rossi, R
Bottinelli, R
Conti, A
Intravaia, E
Galione, A
Benedetti, A
Sorrentino, V
Reggiani, C
机构:
[1] Univ Padua, Dept Anat & Physiol, I-35131 Padua, Italy
[2] Univ Oxford, Dept Pharmacol, Oxford OX1 3QT, England
[3] Univ Siena, Dept Neurosci, Mol Med Sect, I-53100 Siena, Italy
[4] Ist Sci San Raffaele, DIBIT, Milan, Italy
[5] Univ Pavia, Inst Human Physiol, I-27100 Pavia, Italy
[6] Univ Siena, Dept Physiopathol & Expt Med, I-53100 Siena, Italy
关键词:
skeletal muscles;
cADP-ribose;
ryanodine receptors;
sarcoplasmic reticulum;
single muscle fibers;
D O I:
10.1006/bbrc.2001.5834
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
The action of cyclic-ADP-ribose was studied on calcium release from sarcoplasmic reticulum of skeletal muscles of neonatal and adult wild-type and RyR3-deficient mice. cADPR increased calcium efflux from microsomes, enhanced caffeine-induced calcium release, and, in 20% of the tests, triggered calcium release in single muscle fibers. These responses occurred only in the diaphragm of adult RyR3-deficient mice. cADPR action was abolished by ryanodine, ruthenium red, and 8-brome-cADPM These results strongly favor a specific action of cADPR on RyR1. The responsiveness of RyR1 appears in adult muscles when RyR3 is lacking. (C) 2001 Academic Press.
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页码:697 / 702
页数:6
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