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Title Effects of fiber type and diet on nuclear magnetic resonance (NMR) relaxation times of skeletal muscle
Creator/Author Mardini, I.A. ; McCarter, R.J. ; Fullerton, G.D.
Publication Date1986 Mar 01
OSTI IdentifierOSTI ID: 5277695
Report Number(s)CONF-8604222-
Other Number(s)CODEN: FEPRA
Resource TypeConference
Specific TypeJournal Article
Resource RelationFed. Proc., Fed. Am. Soc. Exp. Biol. ; Vol/Issue: 45:3; 70. annual meeting of the Federation of American Society for Experimental Biology; 13 Apr 1986; St. Louis, MO, USA
Research OrgUniv. of Texas Health Science Center, San Antonio
Subject550600 -- Medicine; MUSCLES-- CHEMICAL COMPOSITION;MUSCLES-- NMR SPECTRA; CHOLESTEROL;DIET;FIBERS;NUCLEAR MAGNETIC RESONANCE;POTASSIUM;RABBITS
Related SubjectALKALI METALS;ANIMALS;ELEMENTS;HYDROXY COMPOUNDS;MAGNETIC RESONANCE;MAMMALS;METALS;ORGANIC COMPOUNDS;RESONANCE;SPECTRA;STEROIDS;STEROLS;VERTEBRATES
Description/Abstract NMR studies of muscle have typically used muscles of mixed fiber composition and have not taken into account the metabolic state of the host.^Samples of psoas (type IIB fibers) and soleus (type I fibers) muscles were obtained from 3 groups of rabbits: group C, fed regular chow; group DK fed a potassium deficient diet; and group HC fed a high cholesterol diet.^The T/sub 1/ and T/sub 2/ relaxation times of psoas and soleus muscles were not significantly different for group C. Following dietary manipulation, (groups KD and HC), however, the relaxation times of the psoas and soleus muscles were significantly different.^There was also a significant difference in water content of psoas muscles in groups KD and HC vs. group C but the observed differences in NMR results could be only partially accounted for by the shift in water content.^The authors results suggest that (1) changes in ion or cholesterol concentration are capable of inducing changes in water bonding and structuring in muscle tissues; (2) diet must be added to the growing list of environmental factors that can cause NMR contrast changes; (3) selective use of muscles rich in one fiber type or another for NMR measurements could provide either control or diagnostic information, related to changes in body composition.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 543
System Entry Date2001 May 13

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