کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6278243 | 1295802 | 2008 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phosphorylation of tau and α-synuclein in synaptic-enriched fractions of the frontal cortex in Alzheimer's disease, and in Parkinson's disease and related α-synucleinopathies
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کلمات کلیدی
LBDEGTAPHFDLBNFTIPDα-synuclein - α-سینوکلینEDTA - اتیلن دی آمین تترا استیک اسید ethylene diamine tetraacetic acid - اتیلن دیامین تتراستیک اسیدethylene glycol tetraacetic acid - اتیلن گلیکول تتراستیک اسیدLewy body - بدن لویAlzheimer’s disease - بیماری آلزایمرLewy body disease - بیماری لوویParkinson’s disease - بیماری پارکینسونNeurofibrillary tangle - خلط نوروفیبریلاTau - خود راPaired helical filament - رشته مارپیچ دوار شدهDLB, Dementia with Lewy bodies - زوال عقل با اجسام لویی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Phosphorylation of tau and α-synuclein in synaptic-enriched fractions of the frontal cortex in Alzheimer's disease, and in Parkinson's disease and related α-synucleinopathies Phosphorylation of tau and α-synuclein in synaptic-enriched fractions of the frontal cortex in Alzheimer's disease, and in Parkinson's disease and related α-synucleinopathies](/preview/png/6278243.png)
چکیده انگلیسی
Phosphorylation of tau and phosphorylation of α-synuclein are crucial abnormalities in Alzheimer's disease (AD) and α-synucleinopathies (Parkinson's disease: PD, and dementia with Lewy bodies: DLB), respectively. The presence and distribution of phospho-tau were examined by sub-fractionation, gel electrophoresis and Western blotting in the frontal cortex of cases with AD at different stages of disease progression, PD, DLB pure form and common form, and in age-matched controls. Phospho-tauSer396 has been found in synaptic-enriched fractions in AD frontal cortex at entorhinal/transentorhinal, limbic and neocortical stages, thus indicating early tau phosphorylation at the synapses in AD before the occurrence of neurofibrillary tangles in the frontal cortex. Phospho-tauSer396 is also found in synaptic-enriched fractions in the frontal cortex in PD and DLB pure and common forms, thus indicating increased tau phosphorylation at the synapses in these α-synucleinopathies. Densitometric studies show between 20% and 40% phospho-tauSer396, in relation with tau-13, in synaptic-enriched fractions of the frontal cortex in AD stages I-III, and in PD and DLB. The percentage reaches about 95% in AD stage V and DLB common form. Yet tau phosphorylation characteristic of neurofibrillary tangles, as revealed with the AT8 antibody, is found in the synaptic fractions of the frontal cortex only at advanced stages of AD. Increased phosphorylated α-synucleinSer129 levels are observed in the synaptic-enriched fractions of the frontal cortex in PD and DLB pure and common forms, and in advanced stages of AD. Since tau-hyperphosphorylation has implications in microtubule assembly, and phosphorylation of α-synuclein at Ser129 favors α-synuclein aggregation, it can be suggested that synapses are targets of abnormal tau and α-synuclein phosphorylation in both groups of diseases. Tau phosphorylation at Ser396 has also been found in synaptic-enriched fractions in 12-month-old transgenic mice bearing the A53T α-synuclein mutation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 152, Issue 4, 9 April 2008, Pages 913-923
Journal: Neuroscience - Volume 152, Issue 4, 9 April 2008, Pages 913-923
نویسندگان
G. Muntané, E. Dalfó, A. Martinez, I. Ferrer,