Cryo-EM analysis of scorpion toxin binding to Ryanodine Receptors reveals subconductance that is abolished by PKA phosphorylation

O Haji-Ghassemi, YS Chen, K Woll, GB Gurrola… - Science …, 2023 - science.org
Calcins are peptides from scorpion venom with the unique ability to cross cell membranes,
gaining access to intracellular targets. Ryanodine Receptors (RyR) are intracellular ion …

Downregulation of FKBP5 promotes atrial arrhythmogenesis

X Wang, J Song, Y Yuan, L Li, I Abu-Taha… - Circulation …, 2023 - Am Heart Assoc
Background: Atrial fibrillation (AF), the most common arrhythmia, is associated with the
downregulation of FKBP5 (encoding FKBP5 [FK506 binding protein 5]). However, the …

PI3K (p110α) as a determinant and gene therapy for atrial enlargement in atrial fibrillation

M Ezeani, S Prabhu - Molecular and Cellular Biochemistry, 2023 - Springer
Atrial fibrillation (AF) is an irregular heart rhythm, characterised by chaotic atrial activation,
which is promoted by remodelling. Once initiated, AF can also propagate the progression of …

Targeting ryanodine receptors to treat human diseases

AR Marks - The Journal of Clinical Investigation, 2023 - Am Soc Clin Investig
This Review provides an update on ryanodine receptors (RyRs) and their role in human
diseases of heart, muscle, and brain. Calcium (Ca2+) is a requisite second messenger in all …

[HTML][HTML] Qi-Po-Sheng-Mai granule ameliorates Ach-CaCl2-induced atrial fibrillation by regulating calcium homeostasis in cardiomyocytes

S Shi, X Mao, J Lv, Y Wang, X Zhang, X Shou, B Zhang… - Phytomedicine, 2023 - Elsevier
Background Atrial fibrillation (AF) is one of the most common arrhythmias encountered in
clinical settings. Currently, the pathophysiology of AF remains unclear, which severely limits …

Chronic catestatin treatment reduces atrial fibrillation susceptibility via improving calcium handling in post-infarction heart failure rats

M Yan, T Liu, P Zhong, F Xiong, B Cui, J Wu, G Wu - Peptides, 2023 - Elsevier
Abstract Background Abnormal Ca 2+ handling is a pivotal element of atrial fibrillation (AF)
substrates. Catestatin (CST) modulates intracellular Ca 2+ handling in cardiomyocytes …

Integrative human atrial modelling unravels interactive protein kinase A and Ca2+/calmodulin-dependent protein kinase II signalling as key determinants of atrial …

H Ni, S Morotti, X Zhang, D Dobrev… - Cardiovascular …, 2023 - academic.oup.com
Aims Atrial fibrillation (AF), the most prevalent clinical arrhythmia, is associated with atrial
remodelling manifesting as acute and chronic alterations in expression, function, and …

Arrhythmogenic mechanism of a novel ryanodine receptor mutation underlying sudden cardiac death

Y Qian, D Zuo, J Xiong, Y Yin, R Qi, X Ma, A Yan… - Europace, 2023 - academic.oup.com
Abstract Aims The ryanodine receptor 2 (RyR2) is essential for cardiac muscle excitation–
contraction coupling; dysfunctional RyR2 participates in the development of inherited …

Genetic Inhibition of Mitochondrial Permeability Transition Pore Exacerbates Ryanodine Receptor 2 Dysfunction in Arrhythmic Disease

A Deb, BD Tow, Y Qing, M Walker, ER Hodges… - Cells, 2023 - mdpi.com
The brief opening mode of the mitochondrial permeability transition pore (mPTP) serves as a
calcium (Ca2+) release valve to prevent mitochondrial Ca2+ (mCa2+) overload …

Kinase Inhibitors and Atrial Fibrillation: Mechanisms of Action and Clinical Implications

AS Potter, MM Hulsurkar, L Wu, B Narasimhan… - Clinical …, 2023 - jacc.org
Recent advances have significantly expanded the options of available therapeutics for
cancer treatment, including novel targeted cancer therapies. Within this broad category of …