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Protective Effect of Ergothioneine Against Stroke in Rodent Models
AbstractErgothioneine (ET) is a naturally occurring antioxidant and cytoprotective agent that is synthesized by fungi and certain bacteria. Recent studies have shown a beneficial effect of ET on neurological functions, including cognition and animal models of depression. The aim of this study is to elucidate a possible effect of ET in rodent models of stroke. Post-ischemic intracerebroventricular (i.c.v.) infusion of ET significantly reduced brain infarct volume by as early as 1  day after infusion in rats, as shown by triphenyltetrazolium chloride (TTC) assay. There was a dose-dependent increase in protection, from 50 to...
Source: NeuroMolecular Medicine - October 19, 2022 Category: Neurology Source Type: research

Behavioral and histopathological consequences of transient ischemic stroke in the Flinders Sensitive Line rat, a genetic animal model of depression
Brain Res. 2021 Sep 4:147648. doi: 10.1016/j.brainres.2021.147648. Online ahead of print.ABSTRACTPatients with depression have an increased risk for stroke, higher mortality rates following stroke and worse functional outcomes among survivors. Preclinical studies may help to better understand the underlying mechanisms linking these two diseases, but only a few animal studies have investigated the effects of prestroke depression. The present study investigates whether Flinders Sensitive Line (FSL) rats, a genetic depression model, respond differently to focal ischemic stroke compared to control strains (Flinders Resistant L...
Source: Brain Research - September 7, 2021 Category: Neurology Authors: Denise F Happ Gregers Wegener R Andrew Tasker Source Type: research

Interleukin-18 from neurons and microglia mediates depressive behaviors in mice with post-stroke depression.
In this study, we demonstrate that in IL-18 level in the ischemic brain significantly increased in mice with depression-like behaviors that caused by the combined use of chronic spatial restraint stress and middle cerebral artery occlusion. Interestingly, IL-18 expression was mainly found in neurons at early phase and in microglia in late phase. Injection of exogenous IL-18 in to the amygdala, but not the hippocampus or the striatum, caused severe depression-like behaviors. On the contrary, the blockage of endogenous IL-18 by IL-18 binding protein, a specific antagonist of IL-18, rescued depressive phenotypes in SIR mice. ...
Source: Brain, Behavior, and Immunity - April 5, 2020 Category: Neurology Authors: Wu D, Zhang G, Zhao C, Yang Y, Miao Z, Xu X Tags: Brain Behav Immun Source Type: research

Flinders Sensitive Line rats are resistant to infarction following transient occlusion of the middle cerebral artery.
CONCLUSIONS: Our study suggests that the rat strain does not influence infarct volumes following MCAo. PMID: 32194078 [PubMed - as supplied by publisher]
Source: Brain Research - March 15, 2020 Category: Neurology Authors: Bay V, Happ DF, Ardalan M, Quist A, Oggiano F, Chumak T, Hansen K, Ding M, Mallard C, Andrew Tasker R, Wegener G Tags: Brain Res Source Type: research

Exposure to female estrous is beneficial for male mice against transient ischemic stroke.
CONCLUSION: Exposure to female estrous reduces mortality and improves functional recovery in MCAO male mice. The study provides the first evidence to support the importance of female interaction to male stroke rehabilitation. ABBREVIATIONS: GAP-43: growth-associated protein-43; SYP: Synaptophysin; MCAO: middle cerebral artery occlusion; OVXs: ovariectomies; CCA: common carotid artery; ECA: external carotid artery; EFE: estrous female exposure; TTC: 2,3,5-triphenyltetrazolium chloride; PAGE: polyacrylamide gel electrophoresis; PVDF: polyvinylidene difluoride; ANOVA: analysis of variance; LSD: least significant differenc...
Source: Neurological Research - March 1, 2019 Category: Neurology Tags: Neurol Res Source Type: research