World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Plos One : the Effects of CA2+ and Mgadp on Force Development During and After Muscle Length Changes, Volume 8

By Kellermayer, Miklos S.

Click here to view

Book Id: WPLBN0003967909
Format Type: PDF eBook :
File Size:
Reproduction Date: 2015

Title: Plos One : the Effects of CA2+ and Mgadp on Force Development During and After Muscle Length Changes, Volume 8  
Author: Kellermayer, Miklos S.
Volume: Volume 8
Language: English
Subject: Journals, Science, Medical Science
Collections: Periodicals: Journal and Magazine Collection
Historic
Publication Date:
Publisher: Plos

Citation

APA MLA Chicago

Kellermayer, M. S. (n.d.). Plos One : the Effects of CA2+ and Mgadp on Force Development During and After Muscle Length Changes, Volume 8. Retrieved from http://worldpubliclibrary.org/


Description
Description : The goal of this study was to compare the effects of Ca2+ and MgADP activation on force development in skeletal muscles during and after imposed length changes. Single fibres dissected from the rabbit psoas were (i) activated in pCa2+4.5 and pCa2+6.0, or (ii) activated in pCa2+4.5 before and after administration of 10 mM MgADP. Fibres were activated in sarcomere lengths (SL) of 2.65 mm and 2.95 mm, and subsequently stretched or shortened (5%SL at 1.0 SL.s21) to reach a final SL of 2.80 mm. The kinetics of force during stretch were not altered by pCa2+ or MgADP, but the fast change in the slope of force development (P1) observed during shortening and the corresponding SL extension required to reach the change (L1) were higher in pCa2+6.0 (P1 = 0.2260.02 Po: L1 = 5.2660.24 nm.HS.1) than in pCa2+4.5 (P1 = 0.1560.01 Po: L1 = 4.4860.25 nm.HS.1). L1 was also increased by MgADP activation during shortening. Force enhancement after stretch was lower in pCa2+4.5 (14.965.4%) than in pCa2+6.0 (38.867.5%), while force depression after shortening was similar in both Ca2+ concentrations. The stiffness accompanied the force behavior after length changes in all situations. MgADP did not affect the force behavior after length changes, and stiffness did not accompany the changes in force development after stretch. Altogether, these results suggest that the mechanisms of force generation during and after stretch are different from those obtained during and after shortening.

 

Click To View

Additional Books


  • Plos One : Fishy Aroma of Social Status ... (by )
  • Plos One : Fibroblast Growth Factor 2 Ca... (by )
  • Plos One : Population Distribution of Be... (by )
  • Plos One : Cortactin is a Substrate of A... (by )
  • Plos One : How Much is Too Much Assessme... (by )
  • Plos One : Phosphorylated Ikba Predicts ... (by )
  • Plos One : Automatic Imitation in Rhythm... (by )
  • Plos One : Plasmodium Vivax Merozoite Su... (by )
  • Plos One : Clonal Evolution of a Case of... (by )
  • Plos One : Exaggerated Intergroup Bias i... (by )
  • Plos One : a Randomized Pilot Study of L... (by )
  • Plos One : Transcriptional Effects of E3... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.