Muscular Dystrophy in mdx Mice Despite Lack of Neuronal Nitric Oxide Synthase
Muscular Dystrophy in mdx Mice Despite Lack of Neuronal Nitric Oxide Synthase
复制标题
尽管缺乏神经元一氧化氮合酶,mdx 小鼠仍出现肌肉营养不良
DOI:
10.1046/j.1471-4159.1998.71020784.x
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发表时间:
1998
影响因子:
4.7
通讯作者:
D. Bredt
中科院分区:
文献类型:
--
作者:
Daniel S. Chao;F. Silvagno;D. Bredt
Abstract: Neuronal nitric oxide synthase (nNOS) is a component of the dystrophin complex in skeletal muscle. The absence of dystrophin protein in Duchenne muscular dystrophy and in mdx mouse causes a redistribution of nNOS from the plasma membrane to the cytosol in muscle cells. Aberrant nNOS activity in the cytosol can induce free radical oxidation, which is toxic to myofibers. To test the hypothesis that derangements in nNOS disposition mediate muscle damage in Duchenne dystrophy, we bred dystrophin‐deficient mdx male mice and female mdx heterozygote mice that lack nNOS. We found that genetic deletion of nNOS does not itself cause detectable pathology and that removal of nNOS does not influence the extent of increased sarcolemmal permeability in dystrophin‐deficient mice. Thus, histological analyses of nNOS‐dystrophin double mutants show pathological changes similar to the dystrophin mutation alone. Taken together, nNOS defects alone do not produce muscular dystrophy in the mdx model.
影响因子:
56.9
作者:
HUANG, ZH;HUANG, PL;MOSKOWITZ, MA
通讯作者:
MOSKOWITZ, MA
DOI:
10.1073/pnas.90.8.3710
发表时间:
1993-04-15
影响因子:
11.1
作者:
PETROF, BJ;SHRAGER, JB;SWEENEY, HL
通讯作者:
SWEENEY, HL