Abstract
Malignant hyperthermia (MH) is associated with abnormal regulation of intracellular calcium in skeletal muscle fibers. Besides a mutation in the ryanodine receptor gene, an increase in inositol, 1,4,5-trisphosphate (InsP3) levels could be a possible candidate for the abnormal regulation of intracellular calcium. However, the effect of InsP3 on [Ca2+]i in MH is not known. Microinjection of InsP3 increased intracellular Ca2+ in intact skeletal muscle from malignant hyperthermia susceptible swines (MHS) with a higher potency and efficacy than in muscles from nonsusceptible (MHN) swines. Omission of extracellular Ca2+ or incubation of muscle fibers with Ca2+ channel blockers did not modify the response to InsP3. However, dantrolene (50 μM) a known blocker of intracellular Ca2+ release, decreased resting intracellular Ca2+ concentration and prevented the InsP3-induced increase in intracellular Ca2+. This suggests (i) that MHS skeletal muscles exhibit a higher responsiveness to InsP3-induced release of Ca2+, which could implicate InsP3 in the pathophysiology of MH, and (ii) that the beneficial effect of dantrolene in MHS could be related to its ability to prevent the InsP3-induced release of Ca2+.
References
Foster, PS (1994) The role of phosphoinositide metabolism in Ca2+ signaling of skeletal muscle cells. Inter J Biochem 26:449–468
Foster, PS, Gesini E, Glaudianos C, Hopkinson KC, Denborough MA (1989) Inositol, 1,4,5-trisphosphate phosphatase deficiency and malignant hyperthermia in swine. Lancet 11:124–127
Fujii, J, Otzu, K, Zurzato F, de Leon S, Khanna VK, Weilere JE, O'Biren P, MacLennan DH (1991) Identification of a mutation in porcine ryanodine receptor associated with malignant hyperthermia. Science 253:448–451
Gronert, GA (1980) Malignant hyperthermia. Anesthesiology 53:395–423
Hannon, JD, Lee NK, Yandong C, Blinks JR (1992) Inositol trisphosphate (InSP3) causes contraction in skeletal muscle only under artificial conditions: evidence that Ca2+ release can result from depolarization of T -tubules. J Muscle Res Cell Motil 13:447–456
Hidalgo C, Jaimovich E (1989) Inositol trisphosphate and excitation-contraction coupling in skeletal muscle. J Bioenerg Biomemb 21:267–281
Levitt RC, Nouri N, Jedlicka AE, McKusick VA, Marks R, Shutack JG, Fletcher JE, Rosenberg H, Meyers DA (1991) Evidence of genetic heterogeneity in malignant hyperthermia susceptibility. Genomics 11:543–547
López JR (1994) Free calcium concentration in skeletal muscle of malignant hyperthermia susceptible subjects: effects of ryanodine. In: Ohnishi ST, Ohnishi T (eds) Malignant hyperthermia a genetic membrane disease. CRC Boca Raton pp. 134–150
López JR, Parra L (1991) Inositol 1,4,5-trisphosphate induced increment in myoplasmic [Ca2+]. Depolarization enhances its effects. Cell Calcium 12:543–557
López JR, Allen P, Alamo L, Jone D, Ryan IF, Sreter F (1987) Dantrolene prevents the malignant hyperthermic syndrome by reducing free intracellular calcium concentration in skeletal muscle of susceptible swine. Cell Calcium 8:385–396
López JR, Allen P, Alamo L, Jone D, Sreter F (1994) Myoplasmic free [Ca2+] during a malignant hyperthermia episode in swine. Muscle Nerve 11:82–88
López JR, Gerardi A, López M, Allen P (1992) Effect of dantrolene on myoplasmic free [Ca2+] measured in vivo in patients susceptible to malignant hyperthermia. Anesthesiology 76:711–719
Palade P, Dettbarn C, Alderson B, Volpe P (1989) Pharmacologic differentiation between inositol-1,4,5-trisphosphate-induced Ca2+ release and Ca2+ — or caffeine induced Ca2+ release from intracellular membrane systems. Mole Pharmacol 36:673–680
Scholz J, Troll U, Schulte Am Esch J, Hartung E, Patten M, Sanding P, Schmitz W (1991) Inositol-1,4,5-trisphosphate and malignant hyperthermia. Lancet 337:1361
Suárez Isla B, Alcayage C, Marengo JJ, Bull R (1991) Activation of inositol trisphosphate-sensitive Ca2+ channels of sarcoplasmic reticulum from frog skeletal muscle. J Physiol 441:575–591
Vergara J, Tsien R, Delay M (1985) Inositol 1,4,5-trisphosphate: a possible chemical link in excitation contraction coupling in muscle. Proc Natl Acad Sci USA 82:6332–6356
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
López, J.R., Pérez, C., Linares, N. et al. Hypersensitive response of malignant hyperthermia-susceptible skeletal muscle to inositol 1,4,5-trisphosphate induced release of calcium. Naunyn-Schmiedeberg's Arch Pharmacol 352, 442–446 (1995). https://doi.org/10.1007/BF00172783
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00172783