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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Neurohormonal regulation of calcium in the cell.

Neurohormone C ( NC) is a glycopeptide isolated from bovine hypothalamus, which inhibits Ca-calmodulin (CaM)-dependent cAMP and cGMP phosphodiesterase (PDE) and is a regulator of Ca in the cell. Distribution of [45Ca]CaCl2 in the mitochondria and reticulum (SR) of heart and brain mitochondria and changes of Ca-binding proteins in these organelles under NC influence have been studied in the myocardium before and after isoproterenol-induced necrosis. Intraperitoneal administration of 80-100 mU of PDE inhibitory activity of NC to rats did not cause any noticeable changes in the protein content of intracellular organelles, but altered the affinity of certain proteins to 45Ca2+. This property of NC was especially noticeable after isoproterenol necrosis. Necrotic injury of the myocardium induced Ca2+ storage in the mitochondria and SR of brain, and decreased the Ca2+ concentration in myocardial mitochondria. NC injection to the animals with necrosis was followed by Ca2+ release from all the studied organelles.[1]

References

  1. Neurohormonal regulation of calcium in the cell. Galoyan, A.A., Kevorkian, G.A., Voskanian, L.H., Alexanian, S.S., Muradian, M.S. Neurochem. Res. (1988) [Pubmed]
 
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