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Bone marrow-mesenchymal stem cells alleviate microglial Pyroptosis after intracerebral hemorrhage in rat by secreting C1q/tumor necrosis factor-related protein 3
CONCLUSION: BMSCs can inhibit neuroinflammation by inhibiting microglial pyroptosis, thus alleviate ICH symptoms, likely by suppressing the Syk signaling pathway while promoting the PI3K/AKT signaling pathway activation through producing CTRP3.PMID:36958593 | DOI:10.1016/j.expneurol.2023.114387
Source: Experimental Neurology - March 23, 2023 Category: Neurology Authors: Qinghua Wang Jifeng Piao Yulong Li Huiru Tu Dingyi Lv Libin Hu Run Zhang Zhenzhong Zhong Source Type: research

Treating hereditary transthyretin amyloidosis: Present & amp; future challenges
Rev Neurol (Paris). 2022 Sep 20:S0035-3787(22)00742-1. doi: 10.1016/j.neurol.2022.07.006. Online ahead of print.ABSTRACTHereditary transthyretin amyloidosis (ATTRv) is a rare, lethal, autosomal dominant adult-onset genetic gain-of function (GOF) disorder provoked by mutations in the TTR gene. Until recently, therapeutic options were limited and consisted mainly in liver transplantation and TTR-stabilizers. In the last few years, ATTRv has been at the center of major therapeutic breakthroughs, including development of effective small interfering RNA (siRNA) and antisense oligonucleotide (ASO) treatments targeting liver TTR ...
Source: Revue Neurologique - September 23, 2022 Category: Neurology Authors: A Echaniz-Laguna C Cauquil C Labeyrie D Adams Source Type: research

IGF-1R stimulation alters microglial polarization via TLR4/NF- κB pathway after cerebral hemorrhage in mice.
In this study, we examined the impact of insulin-like growth factor-1 (IGF-1) secreted by NSCs on microglial polarization following ICH in adult C57BL/6 mice. Mouse models of ICH were established by collagenase injection. ICH mice received NSC transplantation after one hour. Firstly, the changes of microglial polarization in cerebral tissues of ICH mice were detected by immunofluorescence and ELISA. Secondly, the molecular mechanism underlying the microglial polarization was evaluated repeatedly with the application of IGF-1R siRNA and IGF-1R-mediated inhibition. We assessed the brain water content and behavioral deficits ...
Source: Brain Research Bulletin - August 28, 2020 Category: Neurology Authors: Sun Z, Wu K, Gu L, Huang L, Zhuge Q, Yang S, Wang Z Tags: Brain Res Bull Source Type: research

Bone marrow mesenchymal stem cells upregulate PI3K/AKT pathway and down-regulate NF- κB pathway by secreting glial cell-derived neurotrophic factors to regulate microglial polarization and alleviate deafferentation pain in rats.
In this study, we investigated whether DP could be alleviated by BMSCs and the underlying mechanism. In vitro study, microglia was stimulated by lipopolysaccharide and then co-cultured with BMSC, GDNF or siRNA GDNF-BMSC. In vivo study, BMSC or siRNA GDNF-BMSC was transplanted intramedullarily on the 21st day after DP surgery. The expression of inflammatory-related factors were detected by RT-PCR and ELISA, RT-PCR,flow cytometry and immunofluorescence staining were performed to detect the expression of microglial surface markers, and Western blot was used to detect the expression levels of p-NF-kb, pPI3K, and pAKT. The pain...
Source: Neurobiology of Disease - May 15, 2020 Category: Neurology Authors: Zhong Z, Chen A, Fa Z, Ding Z, Xiao L, Wu G, Wang Q, Zhang R Tags: Neurobiol Dis Source Type: research

A Mesenchymal stem cell line (B10) increases angiogenesis in a rat MCAO model.
Abstract A human mesenchymal stem cell line (B10) transplantation has been shown to improve ischemia-induced neurological deficits in animal stroke models. To understand the underlying mechanism, we have investigated the effects of B10 transplantation on cerebral angiogenesis in a rat middle cerebral artery occlusion (MCAO) model. B10 cells were transplanted intravenously 24 h after MCAO. Immunofluorescence staining results showed that compared to PBS-groups, vWF positive vessel and endoglin positive new vessels were increased in B10-transplanted MCAO groups in the lesion areas. The mRNA of angiogenesis factors ...
Source: Experimental Neurology - October 3, 2018 Category: Neurology Authors: Sheikh AM, Yano S, Mitaki S, Haque MA, Yamaguchi S, Nagai A Tags: Exp Neurol Source Type: research

Induced neural stem cells modulate microglia activation states via CXCL12/CXCR4 signaling
In this study, we aimed to characterize the immunomodulatory effects of iNSCs on the activation states of microglia and to elucidate the mechanisms underlying these effects. Using a mouse model of closed head injury (CHI), we observed that iNSC grafts decreased the levels of ED1+/Iba1+ and TNF-α+/Iba1+ microglia but increased the levels of IGF1+/Iba1+ microglia in the injured cortex. Subsequently, using a Transwell co-culture system, we discovered that iNSCs could modulate LPS-pretreated microglia phenotypes in vitro via CXCL12/CXCR4 signaling, which we demonstrated through the administration of the CXCR4 antagonist AMD31...
Source: Brain, Behavior, and Immunity - December 7, 2016 Category: Neurology Source Type: research

Induced Neural Stem Cells Modulate Microglia Activation States via CXCL12/CXCR4 Signaling.
In this study, we aimed to characterize the immunomodulatory effects of iNSCs on the activation states of microglia and to elucidate the mechanisms underlying these effects. Using a mouse model of closed head injury (CHI), we observed that iNSC grafts decreased the levels of ED1(+)/Iba1(+) and TNF-α(+)/Iba1(+) microglia but increased the levels of IGF1(+)/Iba1(+) microglia in the injured cortex. Subsequently, using a Transwell co-culture system, we discovered that iNSCs could modulate LPS-pretreated microglia phenotypes in vitro via CXCL12/CXCR4 signaling, which we demonstrated through the administration of the CXCR4 anta...
Source: Brain, Behavior, and Immunity - September 16, 2016 Category: Neurology Authors: Gao M, Dong Q, Yao H, Zhang Y, Yang Y, Dang Y, Zhang H, Yang Z, Xu M, Xu R Tags: Brain Behav Immun Source Type: research

Mesenchymal stem cells enhance α-synuclein clearance via M2 microglia polarization in experimental and human parkinsonian disorder
In this study, we investigated whether mesenchymal stem cells (MSCs) enhance the phagocytic clearance of α-synuclein via M2 microglia polarization, and thereby exert neuroprotective effects in α-synuclein-enriched experimental models and patients with multiple system atrophy (MSA). Treatment of BV2 cells with α-synuclein induced an inflammatory phenotype, whereas co-culture of α-synuclein-treated B V2 cells with MSCs induced an anti-inflammatory M2 phenotype, with decreased α-synuclein levels and increased lysosomal activity, leading to greater viability of neuronal cells co-cultured with BV2 cells. Using IL-4 recepto...
Source: Acta Neuropathologica - August 5, 2016 Category: Neurology Source Type: research

Glial cell line-derived neurotrophic factor promotes increased phenotypic marker expression in femoral sensory and motor-derived Schwann cell cultures.
In this study, SCs harvested from the sensory and motor branches of rat femoral nerve were expanded in vitro and then cultured with 50 or 100ng/mL of GDNF. The exogenous GDNF promoted differentiation of sensory and motor-derived SCs back to their native phenotypes, as demonstrated by decreased proliferation after 7days and increased expression of S100Ββ and phenotype-specific markers. Furthermore, inhibiting Fyn with Src family kinase inhibitors, PP2 and SU6656, and siRNA-mediated knockdown of Fyn reduced GDNF-stimulated differentiation of sensory and motor-derived SCs. These results demonstrate that activating Fyn is ne...
Source: Experimental Neurology - April 11, 2014 Category: Neurology Authors: Jesuraj NJ, Marquardt LM, Kwasa JA, Sakiyama-Elbert SE Tags: Exp Neurol Source Type: research