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Synuclein Cx3cr1

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https://www.readbyqxmd.com/read/29850876/immunohistochemical-and-molecular-investigations-show-alteration-in-the-inflammatory-profile-of-multiple-system-atrophy-brain
#1
Aoife P Kiely, Christina E Murray, Sandrine C Foti, Bridget C Benson, Robert Courtney, Catherine Strand, Tammaryn Lashley, Janice L Holton
Multiple system atrophy (MSA) is an adult-onset neurodegenerative disease characterized by aggregation of α-synuclein in oligodendrocytes to form glial cytoplasmic inclusions. According to the distribution of neurodegeneration, MSA is subtyped as striatonigral degeneration (SND), olivopontocerebellar atrophy (OPCA), or as combination of these 2 (mixed MSA). In the current study, we aimed to investigate regional microglial populations and gene expression in the 3 different MSA subtypes. Microscopy with microglial marker Iba-1 combined with either proinflammatory marker CD68 or anti-inflammatory marker Arginase-1 was analyzed in control, SND, and OPCA cases (n = 5) using paraffin embedded sections...
April 23, 2018: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/29624735/cx3cr1-deficiency-exacerbates-alpha-synuclein-a53t-induced-neuroinflammation-and-neurodegeneration-in-a-mouse-model-of-parkinson-s-disease
#2
Sara Castro-Sánchez, Ángel J García-Yagüe, Tresa López-Royo, Maria Casarejos, José Luis Lanciego, Isabel Lastres-Becker
Parkinson's disease (PD) is the second most common neurodegenerative disorder characterized by the degeneration of dopaminergic neurons of the substantia nigra and the accumulation of protein aggregates, called Lewy bodies, where the most abundant is alpha-synuclein (α-SYN). Mutations of the gene that codes for α-SYN (SNCA), such as the A53T mutation, and duplications of the gene generate cases of PD with autosomal dominant inheritance. As a result of the association of inflammation with the neurodegeneration of PD, we analyzed whether overexpression of wild-type α-SYN (α-SYNWT ) or mutated α-SYN (α-SYNA53T ) are involved in the neuronal dopaminergic loss and inflammation process, along with the role of the chemokine fractalkine (CX3CL1) and its receptor (CX3CR1)...
April 6, 2018: Glia
https://www.readbyqxmd.com/read/29155051/peripheral-monocyte-entry-is-required-for-alpha-synuclein-induced-inflammation-and-neurodegeneration-in-a-model-of-parkinson-disease
#3
Ashley S Harms, Aaron D Thome, Zhaoqi Yan, Aubrey M Schonhoff, Gregory P Williams, Xinru Li, Yudong Liu, Hongwei Qin, Etty N Benveniste, David G Standaert
Accumulation of alpha-synuclein (α-syn) in the central nervous system (CNS) is a core feature of Parkinson disease (PD) that leads to activation of the innate immune system, production of inflammatory cytokines and chemokines, and subsequent neurodegeneration. Here, we used heterozygous reporter knock-in mice in which the first exons of the fractalkine receptor (CX3CR1) and of the C-C chemokine receptor type 2 (CCR2) are replaced with fluorescent reporters to study the role of resident microglia (CX3CR1+) and infiltrating peripheral monocytes (CCR2+), respectively, in the CNS...
February 2018: Experimental Neurology
https://www.readbyqxmd.com/read/26469270/fractalkine-signaling-regulates-the-inflammatory-response-in-an-%C3%AE-synuclein-model-of-parkinson-disease
#4
Aaron D Thome, David G Standaert, Ashley S Harms
BACKGROUND: Parkinson disease (PD) is a progressive neurodegenerative disorder characterized by loss of dopamine neurons in the substantia nigra pars compacta (SNpc) and widespread aggregates of the protein alpha-synuclein (α-syn). Increasing evidence points to inflammation as a chief mediator; however, the role of α-syn in triggering and sustaining inflammation remains unclear. In models of Alzheimer's disease (AD), multiple sclerosis (MS) and neurotoxin models of PD, the chemokine CX3CL1 (fractalkine) and its receptor (CX3CR1) have important roles in modulating neuroinflammation...
2015: PloS One
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