[Sarcoplasmic reticulum function and heart failure: a novel therapeutic target for heart failure].
Periodic changes in calcium (Ca(2+)) concentration in cardiomyocytes are essential for cardiac contraction and relaxation, and the intracellular Ca(2+)concentration is integrally regulated by proteins associated with the sarcoplasmic reticulum (SR), an extensive intracellular membrane system. The activity of the cardiac ryanodine receptor (RyR2) and the sarco/endoplasmic reticulum Ca(2+) ATPase 2a (SERCA2a) are known to be under fine-tuning by their intrinsic regulatory domains and associated SR proteins. A growing body of evidence, including studies using genetically engineered mouse models, has shown that Ca(2+)cycling and Ca(2+)-dependent signaling pathways play a pivotal role in heart failure. The improvement of the SR function has ameliorated effects on cardiac pump function and it has potential therapeutic value for heart failure.
Minamisawa
Susumu
S
Department of Physiology, Yokohama City University Graduate School of Medicine.
Ikeda
Yasuhiro
Y
D000818:Animals; D002118:Calcium / Q000378:metabolism*; D002135:Calcium-Binding Proteins / Q000235:genetics / Q000378:metabolism; D000252:Calcium-Transporting ATPases / Q000378:metabolism; D006333:Heart Failure / Q000378:metabolism* / Q000628:therapy; D006801:Humans; D019837:Ryanodine Receptor Calcium Release Channel / Q000378:metabolism; D012519:Sarcoplasmic Reticulum / Q000235:genetics / Q000502:physiology*; D053498:Sarcoplasmic Reticulum Calcium-Transporting ATPases; D000099211:Phospholamban
D002118:Calcium; D002135:Calcium-Binding Proteins; D000252:Calcium-Transporting ATPases; D019837:Ryanodine Receptor Calcium Release Channel; D053498:Sarcoplasmic Reticulum Calcium-Transporting ATPases; D000099211:Phospholamban