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Nutrition: Potassium

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Total 378 results found since Jan 2013.

Triclosan is a KCNQ3 potassium channel activator
Pflugers Arch. 2022 Apr 22. doi: 10.1007/s00424-022-02692-w. Online ahead of print.ABSTRACTKCNQ channels participate in the physiology of several cell types. In neurons of the central nervous system, the primary subunits are KCNQ2, 3, and 5. Activation of these channels silence the neurons, limiting action potential duration and preventing high-frequency action potential burst. Loss-of-function mutations of the KCNQ channels are associated with a wide spectrum of phenotypes characterized by hyperexcitability. Hence, pharmacological activation of these channels is an attractive strategy to treat epilepsy and other hyperexci...
Source: Pflugers Archiv : European Journal of Physiology - April 23, 2022 Category: Physiology Authors: Victor De la Rosa Maria Luisa Guzm án-Hernández Elisa Carrillo Source Type: research

CADASIL mutations sensitize the brain to ischemia via spreading depolarizations and abnormal extracellular potassium homeostasis
Cerebral autosomal dominant arteriopathy, subcortical infarcts, and leukoencephalopathy (CADASIL) is the most common monogenic form of small vessel disease characterized by migraine with aura, leukoaraiosis, strokes, and dementia. CADASIL mutations cause cerebrovascular dysfunction in both animal models and humans. Here, we showed that 2 different human CADASIL mutations (Notch3 R90C or R169C) worsen ischemic stroke outcomes in transgenic mice; this was explained by the higher blood flow threshold to maintain tissue viability compared with that in wild type (WT) mice. Both mutants developed larger infarcts and worse neurol...
Source: Journal of Clinical Investigation - April 15, 2022 Category: Biomedical Science Authors: Fumiaki Oka, Jeong Hyun Lee, Izumi Yuzawa, Mei Li, Daniel von Bornstaedt, Katharina Eikermann-Haerter, Tao Qin, David Y. Chung, Homa Sadeghian, Jessica L. Seidel, Takahiko Imai, Doga Vuralli, Rosangela M. Platt, Mark T. Nelson, Anne Joutel, Sava Sakadzic, Source Type: research

Prediction of the Effects of Liraglutide on Kidney and Cardiovascular Outcomes Based on Short-Term Changes in Multiple Risk Markers
Conclusion: Integrating multiple short-term risk markers using the PRE score adequately predicted the effect of liraglutide on the composite kidney outcome. However, the PRE score underestimated the effect of liraglutide for the composite CV outcome, suggesting that the risk markers included in the PRE score do not fully capture the CV benefit of liraglutide.
Source: Frontiers in Pharmacology - April 13, 2022 Category: Drugs & Pharmacology Source Type: research

Cost-effectiveness of a Household Salt Substitution Intervention: Findings From 20,995 Participants of the Salt Substitute and Stroke Study (SSaSS)
Conclusions: Replacing regular salt with salt substitute was a cost-saving intervention for the prevention of stroke and improvement of quality of life amongst the SSaSS participants.PMID:35311346 | DOI:10.1161/CIRCULATIONAHA.122.059573
Source: Circulation - March 21, 2022 Category: Cardiology Authors: Ka-Chun Li Liping Huang Maoyi Tian Gian Luca Di Tanna Jie Yu Xinyi Zhang Xuejun Yin Yishu Liu Zhixin Hao Bo Zhou Xiangxian Feng Zhifang Li Jianxin Zhang Jixin Sun Yuhong Zhang Yi Zhao Ruijuan Zhang Yan Yu Nicole Li Lijing L Yan Darwin R Labarthe Paul Elli Source Type: research

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

The Two-Pore Domain Potassium Channel TREK-1 Promotes Blood –Brain Barrier Breakdown and Exacerbates Neuronal Death After Focal Cerebral Ischemia in Mice
This study used TREK-1-deficient mice to directly investigate the role of TREK-1 after focal cerebral ischemia. First, immunofluorescence assays in the mouse cerebral cortex indicated that TREK-1 expression was mostly abundant in astrocytes, neurons, and oligodendrocyte precursor cells but was low in myelinating oligodendrocytes, microglia, or endothelial cells. TREK-1 deficiency did not affect brain weight and morphology or the number of neurons, astrocytes, or microglia but did increase glial fibrillary acidic protein (GFAP) expression in astrocytes of the cerebral cortex. The anatomy of the major cerebral vasculature, n...
Source: Molecular Neurobiology - January 24, 2022 Category: Neurology Source Type: research

Hypoxic Regulation of the Large-Conductance, Calcium and Voltage-Activated Potassium Channel, BK
Hypoxia is a condition characterized by a reduction of cellular oxygen levels derived from alterations in oxygen balance. Hypoxic events trigger changes in cell-signaling cascades, oxidative stress, activation of pro-inflammatory molecules, and growth factors, influencing the activity of various ion channel families and leading to diverse cardiovascular diseases such as myocardial infarction, ischemic stroke, and hypertension. The large-conductance, calcium and voltage-activated potassium channel (BK) has a central role in the mechanism of oxygen (O2) sensing and its activity has been related to the hypoxic response. BK ch...
Source: Frontiers in Physiology - December 22, 2021 Category: Physiology Source Type: research

Urinary element profiles and associations with cardiometabolic diseases: A cross-sectional study across ten areas in China
CONCLUSION: In China, the urinary levels of several toxic metals were significantly associated with the consumption of specific food groups and the risk of cardiometabolic diseases including diabetes and stroke.PMID:34896320 | DOI:10.1016/j.envres.2021.112535
Source: Environmental Research - December 13, 2021 Category: Environmental Health Authors: Lijiao Xu Yunan Liu Qianyu Zhao Huaidong Du Ying Gao Meijuan Bai Jun Lv Yu Guo Liming Li Liang Sun Xu Lin Zhengming Chen Yan Chen Geng Zong Source Type: research