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Action Potential Firing Patterns Regulate Dopamine Release via Voltage-Sensitive Dopamine D2 Autoreceptors in Mouse Striatum In Vivo.
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State Key Laboratory of Membrane Biology, National Biomedical Imaging Center and Institute of Molecular Medicine, College of Future Technology, Peking-Tsinghua Center for Life Sciences, PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, 100871, China.
Dopamine (DA) in the striatum is vital for motor and cognitive behaviors. Midbrain dopaminergic neurons generate both tonic and phasic action potential (AP) firing patterns in behavior mice. Besides AP numbers, whether and how different AP firing patterns per se modulate DA release remain largely unknown.
View Article and Find Full Text PDFCa signaling in vascular smooth muscle and endothelial cells in blood vessel remodeling: a review.
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Department of Molecular and Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan.
Vascular smooth muscle cells (VSMCs) and endothelial cells (ECs) act together to regulate blood pressure and systemic blood flow by appropriately adjusting blood vessel diameter in response to biochemical or biomechanical stimuli. Ion channels that are expressed in these cells regulate membrane potential and cytosolic Ca concentration ([Ca]) in response to such stimuli. The subsets of these ion channels involved in Ca signaling often form molecular complexes with intracellular molecules via scaffolding proteins.
View Article and Find Full Text PDFAltered trial-to-trial responses to reward outcomes in KCNMA1 knockout mice during probabilistic learning tasks.
Behav Brain Funct
December 2024
Department of Pharmacology, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama, 359-8513, Japan.
The large-conductance calcium- and voltage-activated potassium (BK) channels, encoded by the KCNMA1 gene, play important roles in neuronal function. Mutations in KCNMA1 have been found in patients with various neurodevelopmental features, including intellectual disability, autism spectrum disorder (ASD), or attention deficit hyperactivity disorder (ADHD). Previous studies of KCNMA1 knockout mice have suggested altered activity patterns and behavioral flexibility, but it remained unclear whether these changes primarily affect immediate behavioral adaptation or longer-term learning processes.
View Article and Find Full Text PDFPuerarin Protects Myocardium From Ischaemia/Reperfusion Injury by Inhibiting Ferroptosis Through Downregulation of VDAC1.
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Institute of Cardiovascular Surgical Diseases, the First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China.
Despite improvements in interventional techniques leading to faster myocardial reperfusion postmyocardial infarction, there has been a significant rise in the occurrence of myocardial ischaemia/reperfusion injury (MI/RI). A deeper understanding of the underlying mechanisms of MI/RI could offer a crucial approach to reducing myocardial damage and enhancing patient outcomes. This study examined the myocardial protective properties of puerarin (PUE) in the context of MI/RI using hypoxia/reoxygenation (H/R) or ischaemia/reperfusion (I/R) injury models were employed in H9c2 cells and C57BL/6 mice.
View Article and Find Full Text PDFConotoxin KM-RIIIJ reveals interplay between K1-channels and persistent sodium currents in proprioceptive DRG neurons.
Sci Rep
December 2024
School of Biological Sciences, University of Utah, Salt Lake City, Utah, USA.
Voltage-gated potassium channels (VGKCs) comprise the largest and most complex families of ion channels. Approximately 70 genes encode VGKC alpha subunits, which assemble into functional tetrameric channel complexes. These subunits can also combine to form heteromeric channels, significantly expanding the potential diversity of VGKCs.
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