کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6022965 | 1580711 | 2010 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reduced VGLUT2 expression increases motor neuron viability in Sod1G93A mice
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
عصب شناسی
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چکیده انگلیسی
Glutamate-induced excitotoxicity has been suggested to influence pathogenesis in amyotrophic lateral sclerosis (ALS). Vesicular glutamate transporters (VGLUTs) are responsible for transport of glutamate into synaptic vesicles. Nerve terminals that envelop motor neurons in the spinal cord contain VGLUT2 and are likely responsible for most glutamate release on motor neurons. The role of VGLUT2 in ALS and its potential role to influence motor neuron survival have not previously been studied. Here, in a mouse model of ALS, we show that genetic reduction of VGLUT2 protein levels rescues motor neurons in the lumbar spinal cord and in the brainstem as well as neuromuscular junctions in tibialis anterior. Although the number of remaining motor neurons increased, neither disease onset nor life span was affected. We also show that the motor neuron subpopulation-specific markers calcitonin/calcitonin-related polypeptide alpha (Calca) and estrogen related receptor beta (ERRβ) respond in a similar way to reduced VGLUT2 as the whole motor neuron population suggesting that the rescued motor neurons are not of a particular motor unit type. Taken together, this suggests that reduced levels of VGLUT2 decrease motor neuron degeneration but do not prevent loss of motor neuron function in the SOD1G93A mouse model for ALS.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neurobiology of Disease - Volume 37, Issue 1, January 2010, Pages 58-66
Journal: Neurobiology of Disease - Volume 37, Issue 1, January 2010, Pages 58-66
نویسندگان
Hanna Wootz, Anders Enjin, Ã
sa Wallén-Mackenzie, Dan Lindholm, Klas Kullander,