نتایج جستجو برای: hyperactivation

تعداد نتایج: 2165  

Journal: : 2023

Data on factors contributing to the development of postoperative cardiac complications (myocardial infarction, heart failure, arrhythmias) in non-cardiosurgical operations are presented. Hypotension and blood loss usually distinguished among such factors, but less attention is paid role neuroendocrine reactions, particular, hyperactivation sympathoadrenal system; protective effect anesthesia, r...

Journal: :JAMA psychiatry 2014
Ezra Wegbreit Grace K Cushman Megan E Puzia Alexandra B Weissman Kerri L Kim Angela R Laird Daniel P Dickstein

IMPORTANCE Bipolar disorder (BD) is a debilitating mental illness associated with high costs to diagnosed individuals and society. Within the past 2 decades, increasing numbers of children and adolescents have been diagnosed as having BD. While functional magnetic resonance imaging (fMRI) studies have begun to investigate the neural mechanisms underlying BD, few have directly compared differenc...

Journal: :Neuron 2010
Michael A. Sutton

Neurons adapt to altered network activity through homeostatic changes in synaptic function. In this issue of Neuron, Goold and Nicoll report that chronic hyperactivation of individual CA1 pyramidal neurons drives cell-autonomous, compensatory synapse elimination via CaMKIV-dependent transcription. These findings suggest that neurons gauge their intrinsic activity to instruct homeostatic regulat...

2015
Zhengshan Chen Seyedmehdi Shojaee Maike Buchner Huimin Geng Jae Woong Lee Lars Klemm Björn Titz Thomas G. Graeber Eugene Park Ying Xim Tan Anne Satterthwaite Elisabeth Paietta Stephen P. Hunger Cheryl L. Willman Ari Melnick Mignon L. Loh Jae U. Jung John E. Coligan Silvia Bolland Tak W. Mak Andre Limnander Hassan Jumaa Michael Reth Arthur Weiss Clifford A. Lowell Markus Müschen

B cells are selected for an intermediate level of B cell receptor (BCR) signaling strength: Attenuation below minimum (e.g. non-functional BCR)1 or hyperactivation above maximum (e.g. self-reactive BCR)2–3 thresholds of signaling strength causes negative selection. In ~25% of cases, acute lymphoblastic leukemia (ALL) cells carry the oncogenic BCR-ABL1 tyrosine kinase (Ph+), which mimics constit...

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