Physiol. Genomics Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
 QUICK SEARCH:   [advanced]


     


Physiol. Genomics (February 7, 2006). doi:10.1152/physiolgenomics.00253.2005
This Article
Right arrow Full Text (PDF)
Right arrow Microarray Table
Right arrow All Versions of this Article:
25/2/325    most recent
00253.2005v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by de Resende, M. M
Right arrow Articles by Greene, A. S
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by de Resende, M. M
Right arrow Articles by Greene, A. S
Submitted on October 14, 2005
Accepted on February 1, 2006

Role of Endothelial Cell Apoptosis in the Regulation of Skeletal Muscle Angiogenesis during High and low Salt Intake

Micheline M de Resende1, Sandra L Amaral2, Diane H Munzenmaier1, and Andrew S Greene1*

1 Biotechnology and Bioengineering Center, Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, USA
2 Physical Education, UNESP-Sao Paulo State University, Bauru, SP, Brazil

* To whom correspondence should be addressed. E-mail: agreene{at}mcw.edu.

Angiogenesis, under normal conditions, is a tightly regulated balance between pro- and anti-angiogenic factors. The goal of this study was to investigate the mechanisms involved in the control of the skeletal muscle angiogenic response induced by electrical stimulation during the suppression of plasma renin activity (PRA) with high salt diet. Rats fed 0.4% or 4% salt diets were exposed to electrical stimulation for 7 days. The tibialis anterior (TA) muscles from stimulated and unstimulated hindlimbs were removed and prepared for gene expression analysis, CD31/TUNEL double staining assay, and Bcl-2 and Bax protein expression by Western blot. Rats fed a low salt diet showed a dramatic angiogenesis response in the stimulated limb as compared to the unstimulated. This angiogenesis response was significantly attenuated when rats were placed on a high salt diet. Microarray analysis showed that in the stimulated limb of rats fed a low salt diet, many genes related to angiogenesis were upregulated. In contrast, in rats fed a high salt diet, most of the genes upregulated in the stimulated limb function in apoptosis and cell cycle arrest. Endothelial cell apoptosis, as analyzed by CD31/TUNEL staining, increased by 4 fold in the stimulated limb compared to unstimulated. There was also a 48% decrease in the Bcl-2 to Bax ratio in stimulated compared to unstimulated legs of rats fed a high salt diet, confirming severe apoptosis. This study suggests that the increase in endothelial cell apoptosis in TA muscle might contribute to the attenuation of angiogenesis response observed in rats fed a high salt diet.




This article has been cited by other articles:


Home page
Am. J. Physiol. Heart Circ. Physiol.Home page
M. M. de Resende and A. S. Greene
Effect of ANG II on endothelial cell apoptosis and survival and its impact on skeletal muscle angiogenesis after electrical stimulation
Am J Physiol Heart Circ Physiol, June 1, 2008; 294(6): H2814 - H2821.
[Abstract] [Full Text] [PDF]


Home page
Physiol. GenomicsHome page
M. M. de Resende, S. L. Amaral, C. Moreno, and A. S. Greene
Congenic strains reveal the effect of the renin gene on skeletal muscle angiogenesis induced by electrical stimulation
Physiol Genomics, March 10, 2008; 33(1): 33 - 40.
[Abstract] [Full Text] [PDF]


Home page
Am. J. Physiol. Regul. Integr. Comp. Physiol.Home page
E. E. Dupont-Versteegden, B. A. Strotman, C. M. Gurley, D. Gaddy, M. Knox, J. D. Fluckey, and C. A. Peterson
Nuclear translocation of EndoG at the initiation of disuse muscle atrophy and apoptosis is specific to myonuclei
Am J Physiol Regulatory Integrative Comp Physiol, December 1, 2006; 291(6): R1730 - R1740.
[Abstract] [Full Text] [PDF]




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
Visit Other APS Journals Online
Copyright © 2006 by the American Physiological Society.