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. 1980 Feb;30(2):206-9.
doi: 10.1212/wnl.30.2.206.

Duchenne carriers: lactate dehydrogenase isoenzyme 5 in serum and muscle

H Somer, J Willner, R P DeCresce, J Willner, M Somer

Duchenne carriers: lactate dehydrogenase isoenzyme 5 in serum and muscle

H Somer et al. Neurology. 1980 Feb.

Abstract

Only two (5.5%) of 36 possible of known carriers of the gene in Duchenne dystrophy showed increased lactate dehydrogenase isoenzyme 5 (LDH-5) (L/M) in serum, while creatine kinase (CK) was increased in ten (27.8%). LDH-5 and CK did not increase simultaneously; in all five known carriers CK activity was abnormal but LDH-5 was normal. In muscle biopsy, LDH-5 was reduced in patients with Duchenne dystrophy (25.6 +/- 11.5% of total, mean +/- SD; control 59.9 +/- 10.3%; p less than 0.01) and in two of nine possible carriers, but as a group the carriers did not differ from controls: (49.9 +/- 12.1%; p less than 0.05).

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