Molecular Basis of Sex Difference in Neuroprotection induced by Hypoxia Preconditioning in Zebrafish

AbstractHypoxia, the major cause of ischemic injury, leads to debilitating disease in infants via birth asphyxia and cerebral palsy, whereas in adults via heart attack and stroke. A widespread, natural protective phenomenon termed ‘hypoxic preconditioning’ (PH) occurs when prior exposures to hypoxia eventually result in robust hypoxia resistance. Accordingly, we have developed and optimized a novel model of hypoxic preconditioning in adult zebrafish to mimic the tolerance of mini stroke(s) in human, which appears to prote ct against the severe damage inflicted by a major stroke event. Here, we observed a remarkable difference in the progression pattern of neuroprotection between preconditioning hypoxia followed by acute hypoxia (PH) group, and acute hypoxia (AH) only group, with noticeable sex difference when compare d with normoxia behaviour upon recovery. Since gender difference has been reported in stroke risk factors and disease history, it was pertinent to investigate whether any such sex difference also exists in PH’s protective mechanism against acute ischemic stroke. In order to elucidate the neural mo lecular mechanisms behind sex difference in neuroprotection induced by PH, a high throughput proteomics approach utilizing iTRAQ was performed, followed by protein enrichment analysis using ingenuity pathway analysis (IPA) tool. Out of thousands of significantly altered proteins in zebrafish brain, the ones having critical role either in neuroglial pro...
Source: Molecular Neurobiology - Category: Neurology Source Type: research

Related Links:

Authors: Sabet Sarvestani F, Azarpira N Abstract Heart and cerebral infarctions, as two important ischemic diseases, lead to the death of tissues due to inadequate blood supply and high mortality worldwide. These statuses are started via blockage of vessels and depletion of oxygen and nutrients which affected these areas. After reperfusion and restoration of oxygen supply, more severe injury was mediated by multifaceted cascades of inflammation and oxidative stress. microRNAs (miRNAs) as the regulator of biological and pathological pathways can adjust these conditions by interaction with their targets. Also, miRNAs...
Source: Immunological Investigations - Category: Allergy & Immunology Tags: Immunol Invest Source Type: research
Publication date: Available online 9 October 2020Source: NeuropsychologiaAuthor(s): Erin L. Meier, Shannon M. Sheppard, Emily B. Goldberg, Catherine R. Head, Delaney M. Ubellacker, Alexandra Walker, Argye E. Hillis
Source: Neuropsychologia - Category: Neurology Source Type: research
Publication date: Available online 9 October 2020Source: Neurología (English Edition)Author(s): J.P. Martínez-Barbero, P. Tomás-Muñoz, R. Martínez-Moreno
Source: Neurologia - Category: Neurology Source Type: research
Authors: Mantero V, Rigamonti A, Basilico P, Sangalli D, Scaccabarozzi C, Salmaggi A PMID: 33029982 [PubMed]
Source: Journal of Clinical Neurology - Category: Neurology Tags: J Clin Neurol Source Type: research
Authors: Kargiotis O, Safouris A, Psychogios K, Chondrogianni M, Andrikopoulou A, Theodorou A, Magoufis G, Stamboulis E, Tsivgoulis G PMID: 33029978 [PubMed]
Source: Journal of Clinical Neurology - Category: Neurology Tags: J Clin Neurol Source Type: research
CONCLUSIONS: Young adult IS patients in Korea exhibit low awareness and poor management of their risk factors. Although the short-term outcome was relatively favorable in those patients, having SLE was associated with unfavorable outcomes. More attention needs to be paid for improving awareness and controlling risk factors in this population. PMID: 33029967 [PubMed]
Source: Journal of Clinical Neurology - Category: Neurology Tags: J Clin Neurol Source Type: research
Abstract As the global population ages, the incidence of neurodegenerative diseases has risen. Furthermore, it has been suggested that depression, especially in elderly people, may also be an indication of latent neurodegeneration. Stroke, Alzheimer's disease (AD), and Parkinson's disease (PD) are usually accompanied by depression. The urgent challenge is further enforced by psychiatric comorbid conditions, particularly the feeling of despair in these patients. Fortunately, as our understanding of the neurobiological substrates of maladies affecting the central nervous system (CNS) has increased, more therapeutic ...
Source: Neural Plasticity - Category: Neurology Authors: Tags: Neural Plast Source Type: research
Abstract Action selection (AS), or selection of an action from a set of alternatives, is an important movement preparation process that engages a frontal-parietal network. The addition of AS demands to arm training after stroke could be used to engage this motor planning process and the neural network that supports it. The purpose of this case series is to describe the feasibility and outcomes associated with task-oriented arm training aimed at engaging the AS behavioral process and the related neural network in three individuals with chronic stroke. Three participants with mild to moderate motor deficits complete...
Source: Neural Plasticity - Category: Neurology Authors: Tags: Neural Plast Source Type: research
Conclusions: The integrity of the intra- and interhemispheric connections might be related to different processes of motor recovery dependent on the BDNF genotype. Thus, the BDNF genotype may need to be considered as a factor influencing neuroplasticity and functional recovery in patients with stroke. This trial is registered with http://www.clinicaltrials.gov: NCT03647787. PMID: 33029116 [PubMed - in process]
Source: Neural Plasticity - Category: Neurology Authors: Tags: Neural Plast Source Type: research
Background: The purpose of this study is to examine the relationship between preoperative comorbidities, surgical complications, and length of stay (LOS) after hip reconstruction in nonambulatory children with cerebral palsy (CP). Methods: This single-center retrospective cohort study included 127 patients undergoing hip surgery between 2007 and 2016 who were diagnosed with CP (GMFCS IV/V). The cohort was 54% Gross Motor Function Classification System (GMFCS) V with an average age at surgery of 9 years (range, 3-19 y). Preoperative comorbidities included: presence of a gastrostomy tube, respiratory difficulty r...
Source: Journal of Pediatric Orthopaedics - Category: Orthopaedics Tags: Cerebral Palsy Source Type: research
More News: Brain | Cardiology | Cerebral Palsy | Heart | Heart Attack | Ischemic Stroke | Neurology | Stroke | Study