کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4341647 | 1295842 | 2007 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Glutamate receptor abnormalities in the YAC128 transgenic mouse model of Huntington's disease
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کلمات کلیدی
YACHIP1httmGluRGluRNR1PPEN-methyl-d-aspartateNMDAhuntingtin-interacting protein 1SSCIn situ hybridization - Hybridization در محلNMDA receptor - NMDA گیرندهHuntington’s disease - بیماری هانتینگتونSubcellular fractionation - تقسیم بندی زیر سلولیWhole brain - تمام مغزstandard sodium citrate - سیترات سدیم استانداردHuntingtin - هانتینگتنPreproenkephalin - پروپرانکفالینYeast artificial chromosome - کروموزوم مصنوعی مخمرAMPA receptor - گیرنده AMPAMetabotropic glutamate receptor - گیرنده گلوتامات متابوتروپیکGlutamate receptor - گیرنده گلوماتReceptor binding - گیرنده گیرنده
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A yeast artificial chromosome (YAC) mouse model of Huntington's disease (YAC128) develops motor abnormalities, age-dependent striatal atrophy and neuronal loss. Alteration of neurotransmitter receptors, particularly glutamate and dopamine receptors, is a pathological hallmark of Huntington's disease. We therefore analyzed neurotransmitter receptors in symptomatic YAC128 Huntington's disease mice. We found significant increases in N-methyl-d-aspartate, AMPA and metabotropic glutamate receptor binding, which were not due to increases in receptor subunit mRNA expression levels. Subcellular fractionation analysis revealed increased levels of glutamate receptor subunits in synaptic membrane fractions from YAC128 mice. We found no changes in dopamine, GABA or adenosine receptor binding, nor did we see alterations in dopamine D1, D2 or adenosine A2a receptor mRNA levels. The receptor abnormalities in YAC128 transgenic mice thus appear limited to glutamate receptors. We also found a significant decrease in preproenkephalin mRNA in the striatum of YAC128 mice, which contrasts with the lack of change in levels of mRNA encoding neurotransmitter receptors. Taken together, the abnormal and selective increases in glutamate receptor subunit expression and binding are not due to increases in receptor subunit expression and may exert detrimental effects. The decrease in preproenkephalin mRNA suggests a selective transcriptional deficit, as opposed to neuronal loss, and could additionally contribute to the abnormal motor symptoms in YAC128 mice.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 147, Issue 2, 29 June 2007, Pages 354-372
Journal: Neuroscience - Volume 147, Issue 2, 29 June 2007, Pages 354-372
نویسندگان
C.L. Benn, E.J. Slow, L.A. Farrell, R. Graham, Y. Deng, M.R. Hayden, J.-H.J. Cha,