A perspective of smooth muscle contractility through actions of vanadium compounds.
Indian J Physiol Pharmacol
;
1999 Jul; 43(3): 277-95
Article
Dans Anglais
| IMSEAR
| ID: sea-107090
ABSTRACT
Smooth muscle contraction has a characteristic step-response with successive additions of stimulating compounds, and instant reversal on withdrawing the stimulus, indicative of an equilibrium situation wherein continuous, rapid reactions are occurring. Vanadium compounds, ortho- and meta-vanadates, decavanadate and peroxovanadate, were found to contract a variety of smooth muscles. Their actions were analyzed with respect to activation of receptors, increase in the intracellular calcium concentration, and increase in calmodulin-dependent myosin light chain phosphorylation leading to contraction. A new perspective of smooth muscle contractility has emerged from the studies with vanadium compounds suggesting control mechanisms involving phosphorylation for contraction and redox for relaxation.
Texte intégral:
Disponible
Indice:
IMSEAR (Asie du Sud-Est)
Sujet Principal:
Oxydoréduction
/
Phosphorylation
/
Composés du vanadium
/
Sodium-Potassium-Exchanging ATPase
/
Récepteurs de surface cellulaire
/
Canaux ioniques
/
Animaux
/
Potentiels de membrane
/
Contraction musculaire
/
Protéines du muscle
langue:
Anglais
Texte intégral:
Indian J Physiol Pharmacol
Année:
1999
Type:
Article
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