http://cjns.metapress.com/content/q57v7qu0337w6q14/?id=Q57V7QU0337W6Q14
Authors
Hai-Bo Ye1, Hai-Bo Shi1, Shan-Kai Yin1
1Department of Otorhinolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiaotong University, Shanghai, ChinaAbstract
Taurine appears to exert potent protections against glutamate
(Glu)-induced injury to neurons, but the underlying molecular mechanisms
are not fully understood. The possibly protected targets consist of the
plasma membrane and the mitochondrial as well as endoplasmic reticulum
(ER) membranes. Protection may be provided through a variety of effects,
including the prevention of membrane depolarization, neuronal
excitotoxicity and mitochondrial energy failure, increases in
intracellular free calcium ([Ca2+]i), activation of
calpain, and reduction of Bcl-2 levels. These activities are likely to
be linked spatially and temporally in the neuroprotective functions of
taurine. In addition, events that occur downstream of Glu stimulation,
including altered enzymatic activities, apoptotic pathways, and necrosis
triggered by the increased [Ca2+]i, can be inhibited
by taurine. This review discusses the possible molecular mechanisms of
taurine against Glu-induced neuronal injury, providing a better
understanding of the protective processes, which might be helpful in the
development of novel interventional strategies.
No comments:
Post a Comment