Document Detail


Exercise-induced decline in the density of LYVE-1-positive lymphatic vessels in human skeletal muscle.
MedLine Citation:
PMID:  20863269     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: The investigation of lymphatic function and biology and its microvascular influence on tissue integrity, development and failure in various disease conditions constitutes an important field of medical research. To date several investigations were carried out investigating alterations of lymphatic vessel density under medical conditions e.g. in transplanted or failing heart. However, only few studies investigated aspects of exercise induced plasticity of lymphatic vessels.
STUDY OBJECTIVE: It was investigated, if alterations in lymphatic density can be observed in human skeletal muscle as a response to endurance exercise and if potential changes might be related to the distribution of myofibres.
METHODS: Muscle biopsies were taken from vastus lateralis muscle of male cyclists under resting conditions. Lymphatic capillary density and myofibre distribution were determined prior, as well as over the time course of a cycling training intervention. Lymphatic capillaries were stained by immunohistochemistry using LYVE-1 and Podoplanin antibodies. Myofibre distribution was classified by myofibrillar ATPase staining.
RESULTS: The density of LYVE-1/+ capillaries in skeletal muscle was observed to decrease significantly over the time course of the exercise intervention. It was further noticed that in consecutive cross sections a small part of vessels however showed either podoplanin or LYVE-1 staining. We did not recognize correlations of LYVE-1/+ vessel density to the distribution of the myofibre spectrum in trained skeletal muscle.
CONCLUSION: It was concluded that lymphatic vessels are rather normally distributed in skeletal muscle not dependent on a predominant myofibre type. The partial not observed co staining of LYVE-1 and podoplanin might be influenced by a shift in vessel phenotype. The finding of significantly decreased LYVE-1/+ capillary density over the time course of the applied exercise intervention gives rise to the assumption that exercise induced stimuli were able to induce alterations of lymphangiogenetic responses on a structural level.
Authors:
Sebastian Gehlert; Christian Theis; Sebastian Weber; Thorsten Schiffer; Martin Hellmich; Petra Platen; Wilhelm Bloch
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Lymphatic research and biology     Volume:  8     ISSN:  1557-8585     ISO Abbreviation:  Lymphat Res Biol     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-24     Completed Date:  2011-02-28     Revised Date:  2012-03-02    
Medline Journal Info:
Nlm Unique ID:  101163587     Medline TA:  Lymphat Res Biol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  165-73     Citation Subset:  IM    
Affiliation:
Department for Molecular and Cellular Sports Medicine, Institute of Cardiology and Sports Medicine, German Sport University Cologne, Cologne, Germany. gehlert@dshs-koeln.de
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MeSH Terms
Descriptor/Qualifier:
Adenosine Triphosphatases / metabolism
Adult
Athletic Performance
Bicycling / physiology
Exercise / physiology*
Humans
Immunohistochemistry
Lymphangiogenesis / physiology
Lymphatic Vessels / metabolism*
Male
Muscle, Skeletal / metabolism*
Myofibrils / enzymology,  metabolism
Time Factors
Vesicular Transport Proteins / analysis*
Young Adult
Chemical
Reg. No./Substance:
0/LYVE1 protein, human; 0/Vesicular Transport Proteins; EC 3.6.1.-/Adenosine Triphosphatases

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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