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A Novel Model for Studying Voltage-Gated Ion Channel Gene Expression during Reversible Ischemic Stroke.
In conclusion, to our knowledge, this is the first report of the successful evaluation of voltage-gated ion channel gene expression in TIA and RIND animal models. This model will aid future studies in investigating pathophysiological mechanisms, and in developing new therapeutic compounds for the treatment of TIA and RIND. PMID: 30662329 [PubMed - in process]
Source: International Journal of Medical Sciences - January 22, 2019 Category: Biomedical Science Tags: Int J Med Sci Source Type: research

The KATP channel opener, nicorandil, ameliorates brain damage by modulating synaptogenesis after ischemic stroke
by Yuanzheng Zhao, Zhuoying Yang, Yuanhong He, Ruonan Sun, Heping Yuan With population growth and aging, more and more patients with cerebral infarction have varying degrees of disability. ATP-sensitive potassium (KATP) channels regulate many cellular functions by coupling metabolic status with cell membrane electrical activity. Nicorandil (N-(2-hydroxyethyl)-nicotin amide nitrate) is the first KATP channel opener approved for clinical use. It has been reported that it might exert protective effects on the cerebral infarction by increasing cerebral blood flow and reducing inflammation. However, only a few studies explored...
Source: PLoS One - January 26, 2021 Category: Biomedical Science Authors: Yuanzheng Zhao Source Type: research

Genetic predisposition and bioinformatics analysis of ATP-sensitive potassium channels polymorphisms with the risks of elevated apolipoprotein B serum levels and its related arteriosclerosis cardiovascular disease
Aging (Albany NY). 2021 Mar 3;13. doi: 10.18632/aging.202628. Online ahead of print.ABSTRACTSerum concentration of apolipoprotein B (Apo B) is causally associated with arteriosclerosis cardiovascular disease (ASCVD) risk. Whether ATP-sensitive potassium channels (KATP) variants predict the risk of increased Apo B concentration (≥ 80 mg/dL) and related ASCVD remain less clear. We recruited 522 subjects with elevated Apo B concentration (≥ 80 mg/dL) and 522 counterpart subjects (< 80 mg/dL) from South China to assess the associations of KATP variants (rs11046182, rs78148713, rs145456027 and rs147265929) with the risks...
Source: Aging - March 9, 2021 Category: Biomedical Science Authors: Cheng Liu Tianwang Guan Yanxian Lai Junfang Zhan Yan Shen 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