“Occupation has been associated with cognitive reserve in healthy aging and Alzheimer’s disease. Here we assess the relationship between cerebral metabolic deficits in behavioral variant frontotemporal dementia (bvFTD) and occupation characteristics.
Using factor analysis, we derived verbal, physical and visuospatial occupation scores from the US Department of Labor, Occupational Information Network and related these scores to regional cerebral metabolic rate of glucose utilization in 31 patients diagnosed with behavioral variant bvFTD, controlling for cognitive status (CERAD neuropsychological assessment battery), gender and education. Regression analyses showed a marked inverse association between glucose metabolism and (a) verbal occupation scores in left prefrontal cortex and, (b) physical occupation characteristics Danusertib solubility dmso in right supplementary motor area. We concluded that, consistent with the cognitive reserve hypothesis, lifelong occupation characteristics are related to focal cerebral metabolic deficits in bvFTD. Specific occupation demands spanning decades may strengthen cognitive resistance to pathology. (C) 2011 Elsevier Ltd. All Gemcitabine chemical structure rights reserved.”
“Human T-cell leukemia virus type 1 (HTLV-1) infection
and transformation are associated with an incremental switch in the expression of the Src-related protein tyrosine kinases Lck and Lyn. We examined the physical and functional interactions of Lyn with receptors and signal Angiogenesis inhibitor transduction proteins in HTLV-1-infected T cells. Lyn coimmunoprecipitates with the interleukin-2 beta receptor (IL-2R beta) and JAK3 proteins; however, the association of Lyn with the IL-2R beta and Lyn kinase activity was independent of IL-2 stimulation. Phosphorylation of Janus kinase 3
(JAK3) and signal transducers and activator of transcription 5 (STAT5) proteins was reduced by treatment of cells with the Src kinase inhibitor PP2 or by ectopic expression of a dominant negative Lyn kinase protein.”
“It has been shown that synchrony of neuronal oscillations plays a critical role in effective communication between functionally distinct brain areas involving motor-sensory integration. However, the patterns of cortico-cortical coupling and their relation to behavioural success are widely unknown. Here, we analysed changes in cortico-cortical coherence during an unimanual visuomotor task and their correlation with performance. A 28-channel-EEC was attained in 27 healthy subjects during the tracking of an irregularly fluctuating target on a screen by manipulating a force sensor with the right index finger and thumb. For oscillatory power in the alpha (8-12 Hz) and the lower beta-band (betal, 13-20 Hz), we found a decrease in central and occipital areas during performance. Interregional coherence between contralateral frontal and central areas was enhanced in the alpha band.