کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8807212 1606461 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
microRNA 155 up regulation in the CNS is strongly correlated to Down's syndrome dementia
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی آسیب‌شناسی و فناوری پزشکی
پیش نمایش صفحه اول مقاله
microRNA 155 up regulation in the CNS is strongly correlated to Down's syndrome dementia
چکیده انگلیسی
This study examined the molecular correlates of Down's dementia. qRTPCR for chromosome 21 microRNAs was correlated with in situ hybridization, immunohistochemistry for microRNA targets, mRNAs located on chromosome 21, and neurofibrillary tangles in human and the Ts65 dn mouse Down's model. qRTPCR for the microRNAs on the triplicated chromosome showed miR-155 dominance in brain tissues (14.3 fold increase, human and 24.2 fold increase, mouse model) that co-expressed with hyperphosphorylated tau protein. miR-155 was not elevated in Alzheimer's disease or neonates with Downs' syndrome. Chromosome 21 genes APP/BA-42, DYRK1a and BACH1 were not correlated to pathologic changes in Down's dementia. Validated CNS targets of miR-155 that were present in controls and Alzheimer's disease but lacking in Down's dementia brains included BACH1, CoREST1, bcl6, BIM, bcl10, cyclin D, and SAPK4. It is concluded that Down's dementia strongly correlated with overexpression of chromosome 21 microRNA 155 with concomitant reduction of multiple CNS-functional targets. This study highlights the need for anatomic pathologists to determine the specific and diverse pathways cells may take to form neurofibrillary tangles in the different dementias.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Diagnostic Pathology - Volume 34, June 2018, Pages 103-109
نویسندگان
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