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The diamide insecticide chlorantraniliprole increases the single-channel current activity of the mammalian skeletal muscle ryanodine receptor. 2019

Zsuzsanna É Magyar, and Gyula Diszházi, and Judit Péli-Szabó, and Péter Szentesi, and Claude Collet, and László Csernoch, and Péter Nánási, and János Almássy
Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary. almassy.janos@med.unideb.hu.

Very recently, the diamide insecticide chlorantraniliprole was shown to induce Ca2+-release from sarcoplasmic reticulum (SR) vesicles isolated from mammalian skeletal muscle through the activation of the SR Ca2+ channel ryanodine receptor. As this result raises severe concerns about the safety of this chemical, we aimed to learn more about its action. To this end, single-channel analysis was performed, which showed that chlorantraniliprole induced high-activity bursts of channel opening that accounts for the Ca2+-releasing action described before.

UI MeSH Term Description Entries
D007306 Insecticides Pesticides designed to control insects that are harmful to man. The insects may be directly harmful, as those acting as disease vectors, or indirectly harmful, as destroyers of crops, food products, or textile fabrics. Insecticide
D002118 Calcium A basic element found in nearly all tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes. Coagulation Factor IV,Factor IV,Blood Coagulation Factor IV,Calcium-40,Calcium 40,Factor IV, Coagulation
D003958 Diamide A sulfhydryl reagent which oxidizes sulfhydryl groups to the disulfide form. It is a radiation-sensitizing agent of anoxic bacterial and mammalian cells. Diazodicarboxylic Acid Bis(N,N-dimethyl)amide,Diazodicarboxylic Acid Bisdimethylamide,Dizene Dicarboxylic Acid Bis(N,N-dimethylamide),Dizenedicarboxylic Acid Bis(N,N-dimethylamide),Tetramethylazoformamide,Acid Bisdimethylamide, Diazodicarboxylic,Bisdimethylamide, Diazodicarboxylic Acid
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012433 Ryanodine A methylpyrrole-carboxylate from RYANIA that disrupts the RYANODINE RECEPTOR CALCIUM RELEASE CHANNEL to modify CALCIUM release from SARCOPLASMIC RETICULUM resulting in alteration of MUSCLE CONTRACTION. It was previously used in INSECTICIDES. It is used experimentally in conjunction with THAPSIGARGIN and other inhibitors of CALCIUM ATPASE uptake of calcium into SARCOPLASMIC RETICULUM.
D012519 Sarcoplasmic Reticulum A network of tubules and sacs in the cytoplasm of SKELETAL MUSCLE FIBERS that assist with muscle contraction and relaxation by releasing and storing calcium ions. Reticulum, Sarcoplasmic,Reticulums, Sarcoplasmic,Sarcoplasmic Reticulums
D062367 ortho-Aminobenzoates Benzoic acids, salts, or esters that contain an amino group attached to carbon number 2 or 6 of the benzene ring structure. 2-Aminobenzoates,6-Aminobenzoates,Anthranilates,Anthranilic Acids,o-Aminobenzoates,o-Aminobenzoic Acids,ortho-Aminobenzoic Acids,6 Aminobenzoates,Acids, Anthranilic,Acids, o-Aminobenzoic,Acids, ortho-Aminobenzoic,o Aminobenzoates,o Aminobenzoic Acids,ortho Aminobenzoates,ortho Aminobenzoic Acids
D018482 Muscle, Skeletal A subtype of striated muscle, attached by TENDONS to the SKELETON. Skeletal muscles are innervated and their movement can be consciously controlled. They are also called voluntary muscles. Anterior Tibial Muscle,Gastrocnemius Muscle,Muscle, Voluntary,Plantaris Muscle,Skeletal Muscle,Soleus Muscle,Muscle, Anterior Tibial,Muscle, Gastrocnemius,Muscle, Plantaris,Muscle, Soleus,Muscles, Skeletal,Muscles, Voluntary,Skeletal Muscles,Tibial Muscle, Anterior,Voluntary Muscle,Voluntary Muscles
D019837 Ryanodine Receptor Calcium Release Channel A tetrameric calcium release channel in the SARCOPLASMIC RETICULUM membrane of SMOOTH MUSCLE CELLS, acting oppositely to SARCOPLASMIC RETICULUM CALCIUM-TRANSPORTING ATPASES. It is important in skeletal and cardiac excitation-contraction coupling and studied by using RYANODINE. Abnormalities are implicated in CARDIAC ARRHYTHMIAS and MUSCULAR DISEASES. Calcium-Ryanodine Receptor Complex,RyR1,Ryanodine Receptor 1,Ryanodine Receptor 2,Ryanodine Receptor 3,Ryanodine Receptors,Ca Release Channel-Ryanodine Receptor,Receptor, Ryanodine,RyR2,RyR3,Ryanodine Receptor,Ca Release Channel Ryanodine Receptor,Calcium Ryanodine Receptor Complex,Complex, Calcium-Ryanodine Receptor,Receptor 1, Ryanodine,Receptor 2, Ryanodine,Receptor 3, Ryanodine,Receptor Complex, Calcium-Ryanodine,Receptors, Ryanodine

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