These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: [Mechanism of postextrasystolic potentiation of the myocardium].
    Author: Markhasin VS, Tsyv'ian PB, Artem'eva OG, Mil'shteĭn GN, Solov'eva OE.
    Journal: Fiziol Zh SSSR Im I M Sechenova; 1987 Oct; 73(10):1339-44. PubMed ID: 2448171.
    Abstract:
    Combined effects of poststimulation and postextrasystolic potentiation (PESP) were studied in the rat papillary muscles. The constant PESP augmentation of isometric force triggered by extrasystolic stimulus was shown for 2-8 poststimulatory potentiated contractions. The PESP was not dependent upon the Ca2+ concentration within the 0.5-1.2 mM range. The findings corroborate the postulate that the PESP in cardiomyocytes is associated with special Ca2+ store which is triggered by two APs: regular and extrasystolic ones.
    [Abstract] [Full Text] [Related] [New Search]