A genetically engineered mouse model shows RyR1-mediated calcium-induced calcium release plays a minimal role in normal skeletal muscle contraction, but is crucial in life-threatening muscle disorders. The study confirms depolarization-induced calcium release as the main driver of muscle contraction.
SourceJuntendo University Research Promotion Center·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateSep 25, 2025
Researchers discovered how enzymes metabolize chiral PCBs, leading to neurodevelopmental issues. The study found that mirror-image isomers are metabolized differently, causing selective toxicity in humans and animals.
SourceKobe University·JournalChemosphere·TypeExperimental study·DateNov 22, 2022
A small study found that COVID patients' brains display similar molecular changes to those with Alzheimer's disease, including increased phosphorylated tau and defective ryanodine receptors. The findings suggest a link between the immune response and neurological symptoms in long COVID patients.
SourceColumbia University Irving Medical Center·JournalAlzheimer s & Dementia·TypeExperimental study·DateFeb 3, 2022
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A new study found that Raise Your Resilience program, focusing on gratitude and positive attitude toward aging, increased resilience and wisdom among seniors. The program, delivered by non-licensed staff, reduced daily stress and improved overall well-being in senior housing communities.
SourceUniversity of California - San Diego·JournalInternational Psychogeriatrics·DateFeb 5, 2020
A new study found that dietary supplements containing red yeast rice may carry both benefits and risks associated with statins. The beneficial effects of RYR are attributed to monacolins, which are chemically related to statins.
SourceWiley·JournalBritish Journal of Clinical Pharmacology·DateJan 17, 2017
Researchers at Caltech develop efficient synthesis route for ryanodol, a key intermediate on the path to producing the insecticide ryanodine. The new method reduces reaction steps by five, enabling faster production of the molecule. This breakthrough also opens up possibilities for studying biological function and developing new drugs.
SourceCalifornia Institute of Technology·JournalScience·DateAug 25, 2016
Researchers at Max Planck Institute of Molecular Physiology studied the three-dimensional structure of the ryanodine receptor using electron cryo-microscopy and a new technique for detecting electrons. The high-resolution structure reveals how the protein changes its shape upon binding calcium ions.
SourceMax-Planck-Gesellschaft·JournalNature·DateDec 2, 2014
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A new study published in PLoS ONE reveals how two individual but very similar proteins cooperatively adjust calcium levels inside heart cells, which may degenerate in heart failure. This dual regulation may lead to irregular heart rhythms and increased risk of sudden cardiac death.
SourceUniversity of Bristol·JournalPLOS ONE·DateFeb 22, 2012
A compound called AICAR has been found to prevent heat-induced deaths in mice with a gene mutation that makes them sensitive to heat. The study's findings suggest that AICAR could protect young athletes and soldiers from heat-related illnesses, potentially saving lives during exercise.
SourceBaylor College of Medicine·JournalNature Medicine·DateJan 8, 2012
Aging causes muscle weakness due to calcium leakage from ryanodine receptor channel complex, leading to reduced muscle function. An experimental drug called S107 stabilizes calstabin1, improving muscle force and exercise capacity in aged mice.
SourceColumbia University Irving Medical Center·JournalCell Metabolism·DateAug 2, 2011
A new study reveals that Cav1.3 calcium channels play a critical role in controlling the ticking of pacemaker cells in the sinoatrial node, which regulates heart rate. The absence of these channels leads to reduced frequency of Ca2+ transients and bradycardia in mice.
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Researchers used Canada's national centre for synchrotron research to build a high-resolution model of the ryanodine receptor. This sheds new light on life-threatening congenital heart conditions and could lead to developing new treatments to prevent calcium leakage.
SourceUniversity of British Columbia·JournalNature·DateNov 3, 2010
Researchers at Vanderbilt University Medical Center discovered that the clinically available drug flecainide prevents potentially lethal arrhythmias in patients with CPVT. In two patients, flecainide prevented exercise-induced ventricular arrhythmias and allowed them to live normal lives.
SourceVanderbilt University Medical Center·JournalNature Medicine·DateMar 29, 2009
A recent study published in the Proceedings of the National Academy of Sciences has identified a molecular defect in specialized proteins called ryanodine receptors (RyRs) as a possible cause of heart failure. The RyRs malfunction, leading to calcium imbalances that prevent the heart from contracting effectively and relaxing adequately.
SourceOhio State University·JournalProceedings of the National Academy of Sciences·DateSep 19, 2005
Researchers have identified two novel compound classes that target the ryanodine receptor in insects, offering a promising alternative to older, less-selective insecticides. These compounds, developed by Nihon Nohyaku Co., Ltd. and Bayer CropScience AG, show high potency and mammalian safety against pest insects.