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Arquivos de Neuro-Psiquiatria
Print version ISSN 0004-282X
WERNECK, Lineu Cesar. Correlation of disability with age and serum enzymes in neuromuscular disorders. Arq. Neuro-Psiquiatr. [online]. 1995, vol.53, n.1, pp. 60-68. ISSN 0004-282X. http://dx.doi.org/10.1590/S0004-282X1995000100010.
We attempt to correlate the patient's disability and serum enzymes (creatinekinase, lactic dehydrogenase, aldolase, glutamic oxalacetic and glutamic piruvic transaminase) in several neuromuscular disorders using the Vignos and Archibald scale (V&A). In 806 cases we studied, serum enzyme levels and the V&A disability using a computer for Pearson's correlation and regressive analysis. A good correlation of the V&A with age suggested a progressive evolution (increased disability) in Duchenne muscular dystrophy, fascioscapulohumeral dystrophy, myotonic dystrophy, myopathies due to respiratory chain enzyme deficiency and amyotrophic lateral sclerosis. A negative correlation (decrease disability with age) was found for multicore myopathy, benign myopathy of childhood with type 1 predominance, carnitine myopathy deficiency and dermatomyositis. It was found a correlation (p< 0.0S) of the V&A and the level of specific serum enzymes with Duchenne muscular dystrophy, oculocraniosomatic dystrophies, polymyositis and polyarteritis nodosa. Using regression analysis, we found a weak interrelation between serum enzymes studied simultaneously and the V&A. These weak relations suggest some limitation in the long term use of the five serum enzymes in the evaluation of neuromuscular disorders when compared with V&A; although they are very important in the diagnosis.
Keywords : serum enzymes; myopathies; neuromuscular disorders; diagnosis; muscle disability.