Document Detail


Time-course alterations of plasma and soleus agouti-related Peptide and relationship to ATP, glycogen, cortisol, and insulin concentrations following treadmill training programs in male rats.
MedLine Citation:
PMID:  21104582     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
No studies have examined the time-course changes of the appetite stimulating hormone, agouti-related peptide (AgRP), induced by exercise training. The purpose of the study was to determine the effects of short (3 weeks), moderate (9 weeks), and long-term (12 weeks) treadmill training on plasma and soleus concentrations of AgRP, as well as ATP and glycogen concentrations in soleus muscle and liver tissues. 54 Wistar male rats were randomly assigned into control (total n=27; 3 week control=10; 9 week control=8; 12 week control=9) and training (total n=27; 3 week trained=10; 9 week trained=8; 12 week trained=9). The training groups ran for 60 min/d, 5 d/wk at 25 m/min and 0% grade for 3, 9, and 12 weeks. After the last exercise session soleus muscle, liver, and plasma were collected and frozen. Results demonstrated that after 3, 9, and 12 weeks of exercise training there was an increase in plasma and soleus AgRP that declined with age. Soleus muscle glycogen was inversely related to AgRP. After 9 weeks of training there was a significant decrease and increase in plasma insulin and cortisol, respectively. Thus, as little as 3 weeks of running enhances AgRP concentration in rat soleus and plasma whereas changes in liver ATP and glycogen and soleus muscle glycogen require 9 weeks for alteration. Plasma and soleus muscle AgRP decline with age, and AgRP concentration in plasma and soleus are related to insulin, soleus ATP, and liver glycogen.
Authors:
A Ghanbari-Niaki; R R Kraemer; H Abednazari
Publication Detail:
Type:  Journal Article     Date:  2010-11-22
Journal Detail:
Title:  Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et métabolisme     Volume:  43     ISSN:  1439-4286     ISO Abbreviation:  Horm. Metab. Res.     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-02-02     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0177722     Medline TA:  Horm Metab Res     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  112-6     Citation Subset:  IM    
Copyright Information:
© Georg Thieme Verlag KG Stuttgart · New York.
Affiliation:
Exercise Biochemistry Division, Faculty of Physical Education and Sports Sciences, University of Mazandaran, Baboulsar, Mazandaran, Iran.
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