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Stroke-associated pattern of gene expression previously identified by machine-learning is diagnostically robust in an independent patient population
The objective of this study was to assess the diagnostic capacity and temporal stability of this stroke-associated transcriptional signature in an independent patient population. Publicly available whole blood microarray data generated from 23 ischemic stroke patients at 3, 5, and 24h post-symptom onset, as well from 23 cardiovascular disease controls, were obtained via the National Center for Biotechnology Information Gene Expression Omnibus. Expression levels of the ten candidate genes (ANTXR2, STK3, PDK4, CD163, MAL, GRAP, ID3, CTSZ, KIF1B, and PLXDC2) were extracted, compared between groups, and evaluated for their dis...
Source: Genomics Data - September 2, 2017 Category: Genetics & Stem Cells Source Type: research

Knock-out of a mitochondrial sirtuin protects neurons from degeneration in < i > Caenorhabditis elegans < /i >
by Rachele Sangaletti, Massimo D ’Amico, Jeff Grant, David Della-Morte, Laura Bianchi Sirtuins are NAD⁺-dependent deacetylases, lipoamidases, and ADP-ribosyltransferases that link cellular metabolism to multiple intracellular pathways that influence processes as diverse as cell survival, longevity, and cancer growth. Sirtuins influence the extent of neuronal death in stroke. Howe ver, different sirtuins appear to have opposite roles in neuronal protection. InCaenorhabditis elegans, we found that knock-out of mitochondrial sirtuinsir-2.3, homologous to mammalian SIRT4, is protective in both chemical ischemia and hypera...
Source: PLoS Genetics - August 18, 2017 Category: Genetics & Stem Cells Authors: Rachele Sangaletti Source Type: research

Sex Difference of Radiation Response in Occupational and Accidental Exposure
Conclusion and Outlook This review summarizes the data from major human studies on the health risks of radiation exposure and shows that sex can potentially influence the prolonged response to radiation exposure (Figure 1 and Tables 1, 2). These data suggest that long-term radiosensitivity in females is higher than that in males who receive a comparable dose of radiation. Our analysis of the literature agrees with the conclusions of the recent report on the Biological effects of ionizing radiation (BEIR VII) published in 2006 by the National Academy of Sciences (NAS), United States (National Research Council, 2006). The B...
Source: Frontiers in Genetics - May 2, 2019 Category: Genetics & Stem Cells Source Type: research