We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
The Sarcoplasmic Reticulum in Muscle Fatigue and Disease: Role of the Sarco(endo)plasmic Reticulum Ca<sup>2+</sup>-ATPase.
- Authors
Tupling, A. Russeh
- Abstract
Skeletal muscles induced to contract repeatedly respond with a progressive loss in their ability to generate a target force or power. This condition is known simply as fatigue. Commonly fatigue may persist for prolonged periods of time, particularly at low activation frequencies, which is called low-frequency fatigue. Failure to activate the contractile apparatus with the appropriate intracellular free calcium ([Ca2+]f) signal contributes to fatigue but the precise mechanisms involved are unknown. The sarcoplasmic reticulum (SR) is the major organelle in muscle that is responsible for the regulation of [Ca2+]f and numerous studies have shown that SR function, both Ca2+ release and Ca2+ uptake, is impaired following fatiguing contractile activity. The major aim of this review is to provide insight into the various cellular mechanisms underlying the alterations in SR Ca2+ cycling and cytosolic [Ca2+]f that are associated both with the development of fatigue during repeated muscle contraction and with low-frequency or long-lasting fatigue. The primary focus will be on the role of the sarco(endo)plasmic reticulum Ca2+-ATPase (SERCA) in normal muscle function, fatigue, and disease.
- Subjects
MUSCLE contraction; FATIGUE (Physiology); SARCOPLASMIC reticulum; CALCIUM; CYTOSOL; ADENOSINE triphosphate
- Publication
Canadian Journal of Applied Physiology, 2004, Vol 29, Issue 3, p308
- ISSN
1066-7814
- Publication type
Article
- DOI
10.1139/h04-021