Vitamin D metabolites in post-menopausal women and their relationship to the myopathic electromyogram

P. J. Heyburn, Munro Peacock, I. F. Casson, R. G. Crilly, G. A. Taylor

Research output: Contribution to journalArticle

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Abstract

Proximal muscular weakness is a feature of many metabolic bone diseases but is not well recognized in spinal osteoporosis. Thirty-six post-menopausal women presenting with back pain, with or without osteoporosis, was therefore studied in order to define the relationship between abnormal electromyographic findings and disturbed vitamin D metabolism, as both low plasma 1,25 dihydroxy vitamin D concentrations and malabsorption of calcium have been reported in osteoporosis. Patients with abnormal electromyograms had lower concentrations of plasma 1,25 dihydroxy vitamin D (mean 78.3 pmol/l, SD 20.5, n = 15) than normal subjects of similar age (mean 110.4 pmol/l, SD 39.4, n = 21; P <0.01), but electromyographic abnormality was not associated with changes in radiocalcium absorption, plasma 25 hydroxy vitamin D, plasma calcium or phosphate or urinary calcium or hydroxy proline excretion or impaired renal function. There was no relationship between abnormal electromyography and osteoporosis assessed by spinal radiographs and iliac crest biopsy. These findings are consistent with our previous suggestion that muscle weakness in many unrelated bone disorders is related to low plasma 1,25 dihydroxy vitamin D concentrations, but suggest that there is no relationship between proximal myopathy and spinal osteoporosis in post-menopausal women.

Original languageEnglish (US)
Pages (from-to)41-44
Number of pages4
JournalEuropean Journal of Clinical Investigation
Volume13
Issue number1
StatePublished - 1983
Externally publishedYes

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Electromyography
Metabolites
Vitamin D
Osteoporosis
Plasmas
Muscle Weakness
Calcium
Bone
Hydroxyproline
Postmenopausal Osteoporosis
Biopsy
Metabolic Bone Diseases
Muscular Diseases
Back Pain
Proline
Metabolism
Muscle
Phosphates
Kidney
Bone and Bones

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Vitamin D metabolites in post-menopausal women and their relationship to the myopathic electromyogram. / Heyburn, P. J.; Peacock, Munro; Casson, I. F.; Crilly, R. G.; Taylor, G. A.

In: European Journal of Clinical Investigation, Vol. 13, No. 1, 1983, p. 41-44.

Research output: Contribution to journalArticle

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