Clinical studies have demonstrated associations between circulating levels of the gut-microbiota-derived metabolite trimethylamine-N-oxide (TMAO) and stroke incident risk. However, a causal role of gut microbes in stroke has not yet been demonstrated. Herein we show that gut microbes, through dietary choline and TMAO generation, directly impact cerebral infarct size and adverse outcomes following stroke. Fecal… Continue reading #Gut microbes impact #stroke severity via the trimethylamine N-oxide pathway
Category: Neurology
Passive transfer of #fibromyalgia symptoms from patients to mice
Fibromyalgia syndrome (FMS) is characterized by widespread pain and tenderness, and patients typically experience fatigue and emotional distress. The etiology and pathophysiology of fibromyalgia are not fully explained and there are no effective drug treatments. Here we show that IgG from FMS patients produced sensory hypersensitivity by sensitizing nociceptive neurons. Mice treated with IgG from… Continue reading Passive transfer of #fibromyalgia symptoms from patients to mice
Predictive factors of #smell recovery in a clinical series of 288 #COVID-19 patients with olfactory dysfunction
To evaluate potential predictive factors of smell recovery in a clinical series of 288 patients presenting olfactory dysfunction (OD) related to the COVID19. Potential correlations are sought between epidemiological, clinical and immunological characteristics of patients and the persistence of OD at 60 days. MethodsCOVID-19 positive patients presenting olfactory dysfunction were prospectively recruited from three European… Continue reading Predictive factors of #smell recovery in a clinical series of 288 #COVID-19 patients with olfactory dysfunction
Serial #sarcomere number is substantially decreased within the paretic #biceps brachii in individuals with chronic hemiparetic #stroke
A muscle’s structure, or architecture, is indicative of its function and is plastic; changes in input to or use of the muscle alter its architecture. Stroke-induced neural deficits substantially alter both input to and usage of individual muscles. We combined in vivo imaging methods (second-harmonic generation microendoscopy, extended field-of-view ultrasound, and fat-suppression MRI) to quantify… Continue reading Serial #sarcomere number is substantially decreased within the paretic #biceps brachii in individuals with chronic hemiparetic #stroke
Flourishing Despite #Migraines: A Nationally Representative Portrait of Resilience and Mental Health among Canadians
1) To examine the relationship between migraine status and complete mental health (CMH) among a nationally representative sample of Canadians; 2) To identify significant correlates of CMH among those with migraine. Methods Secondary analysis of the nationally representative Canadian Community Health Survey – Mental Health (CCHS-MH) (N=21,108). Bivariate analyses and a series of logistic regression… Continue reading Flourishing Despite #Migraines: A Nationally Representative Portrait of Resilience and Mental Health among Canadians
#Perception of invisible masked objects in early infancy
Recurrent loops in the visual cortex play a critical role in visual perception, which is likely not mediated by purely feed-forward pathways. However, the development of recurrent loops is poorly understood. The role of recurrent processing has been studied using visual backward masking, a perceptual phenomenon in which a visual stimulus is rendered invisible by… Continue reading #Perception of invisible masked objects in early infancy
Adaptive circuit dynamics across human #cortex during evidence accumulation in changing #environments
Many decisions under uncertainty entail the temporal accumulation of evidence that informs about the state of the environment. When environments are subject to hidden changes in their state, maximizing accuracy and reward requires non-linear accumulation of evidence. How this adaptive, non-linear computation is realized in the brain is unknown. We analyzed human behavior and cortical… Continue reading Adaptive circuit dynamics across human #cortex during evidence accumulation in changing #environments
The risk of ischemic #stroke and hemorrhagic stroke in Chinese adults with low-density lipoprotein #cholesterol concentrations < 70 mg/dL
The risk of stroke in individuals with very low low-density lipoprotein cholesterol (LDL-C) concentrations remains high. We sought to prioritize predictive risk factors for stroke in Chinese participants with LDL-C concentrations < 70 mg/dL using a survival conditional inference tree, a machine learning method. MethodsThe training dataset included 9327 individuals with LDL-C concentrations < 70 mg/dL who were free… Continue reading The risk of ischemic #stroke and hemorrhagic stroke in Chinese adults with low-density lipoprotein #cholesterol concentrations < 70 mg/dL
#Mineralocorticoid receptors dampen glucocorticoid receptor sensitivity to #stress via regulation of FKBP5
Responding to different dynamic levels of stress is critical for mammalian survival. Disruption of mineralocorticoid receptor (MR) and glucocorticoid receptor (GR) signaling is proposed to underlie hypothalamic-pituitary-adrenal (HPA) axis dysregulation observed in stress-related psychiatric disorders. In this study, we show that FK506-binding protein 51 (FKBP5) plays a critical role in fine-tuning MR:GR balance in the… Continue reading #Mineralocorticoid receptors dampen glucocorticoid receptor sensitivity to #stress via regulation of FKBP5
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