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Phosphoproteome Analysis Identifies a Synaptotagmin-1-associated complex involved in Ischemic Neuron Injury
Mol Cell Proteomics. 2022 Mar 4:100222. doi: 10.1016/j.mcpro.2022.100222. Online ahead of print.ABSTRACTCerebral stroke is one of the leading causes of death in adults worldwide. However, the molecular mechanisms of stroke-induced neuron injury are not fully understood. Here, we obtained phosphoproteomic and proteomic profiles of the acute ischemic hippocampus by LC-MS/MS analysis. Quantitative phosphoproteomic analyses revealed that the dysregulated phosphoproteins were involved in synaptic components and neurotransmission. We further demonstrated that phosphorylation of Synaptotagmin-1 (Syt1) at the Thr112 site in cultur...
Source: Molecular and Cellular Proteomics : MCP - March 8, 2022 Category: Molecular Biology Authors: Wei Jiang Pei Zhang Peng Yang Na Kang Junqiang Liu Aihemaiti Yilixiati Haijun Tu Source Type: research

Kv1.3 inhibition attenuates neuroinflammation through disruption of microglial calcium signaling.
Authors: Fomina AF, Nguyen HM, Wulff H Abstract In the last 5 years inhibitors of the potassium channel KV1.3 have been shown to reduce neuroinflammation in rodent models of ischemic stroke, Alzheimer's disease, Parkinson's disease and traumatic brain injury. At the systemic level these beneficial actions are mediated by a reduction in microglia activation and a suppression of pro-inflammatory cytokine and nitric oxide production. However, the molecular mechanisms for the suppressive action of KV1.3 blockers on pro-inflammatory microglia functions was not known until our group recently demonstrated that KV1.3 chan...
Source: Channels - December 29, 2020 Category: Molecular Biology Tags: Channels (Austin) Source Type: research

Increased burden of rare deleterious variants of the KCNQ1 gene in patients with large ‑vessel ischemic stroke.
Increased burden of rare deleterious variants of the KCNQ1 gene in patients with large‑vessel ischemic stroke. Mol Med Rep. 2019 Feb 25;: Authors: Janicki PK, Eyileten C, Ruiz-Velasco V, Pordzik J, Czlonkowska A, Kurkowska-Jastrzebska I, Sugino S, Imamura Kawasawa Y, Mirowska-Guzel D, Postula M Abstract The impact of rare and damaging variants in genes associated with platelet function in large‑vessel ischemic stroke (LVIS) remains unknown. The aim of this study was to investigate the contribution of some of these variants to the genetic susceptibility to LVIS in Polish patients using a deep re‑...
Source: Molecular Medicine Reports - March 4, 2019 Category: Molecular Biology Tags: Mol Med Rep Source Type: research

Potassium channel expression and function in microglia: Plasticity and possible species variations.
Authors: Nguyen HM, Blomster LV, Christophersen P, Wulff H Abstract Potassium channels play important roles in microglia functions and thus constitute potential targets for the treatment of neurodegenerative diseases like Alzheimer's, Parkinson's and stroke. However, uncertainty still prevails as to which potassium channels are expressed and at what levels in different species, how the expression pattern changes upon activation with M1 or M2 polarizing stimuli compared to more complex exposure paradigms, and - most importantly - how these findings relate to the in vivo situation. In this mini-review we discuss the ...
Source: Channels - March 11, 2017 Category: Molecular Biology Tags: Channels (Austin) Source Type: research