PMID: 8941560Nov 1, 1996Paper

Infrared spectroscopy of dystrophic mdx mouse muscle tissue distinguishes among treatment groups

Journal of Applied Physiology
R A ShawJ E Anderson

Abstract

Four groups of mdx mice (deflazacort, high dose of 1.5 mg/kg and low dose of 0.75 mg/kg; prednisone, 1.0 mg/kg; and a placebo) were examined in a double-blind protocol. The experiments tested the hypothesis that infrared spectroscopy can distinguish among gastrocnemius muscle tissues derived from dystrophic animals (n = 22) from different treatment groups and from control muscle tissue (n = 23). Results showed that muscle, inflamed muscle, and tendon can be distinguished on the basis of their infrared absorption patterns. Distinctions among the spectra of the four treatment groups were sought with automated pattern-recognition methods. These classification methods, based either on spectral regions (900-1,500 cm-1) or on principal-component analysis, were in close agreement, assigning 15 or 16, respectively, of 22 mdx spectra to the correct treatment group. Both trials cleanly separated the high-dose deflazacort from the placebo group of muscles, whereas the prednisone and low-dose deflazacort groups were persistently confused in these classifications. Changes in the histology of muscle inflammation paralleled the spectral-classification results. Thus the proposed method, combining infrared spectroscopy with pattern-recognition ...Continue Reading

References

Mar 1, 1992·The American Journal of Physiology·B ChanceF Hagerman
Dec 1, 1991·Biochemistry and Cell Biology = Biochimie Et Biologie Cellulaire·J E Anderson
Dec 1, 1988·Journal of Muscle Research and Cell Motility·J E AndersonW K Ovalle
Apr 1, 1994·Muscle & Nerve·C AngeliniC Costa
Dec 1, 1993·Journal of the Neurological Sciences·M A Khan
Jan 1, 1995·Rheumatology International·R A ShawH H Mantsch

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