Thyroid hormone and parathyroid hormone competing to maintain calcium levels in the presence of vitamin D deficiency

Thyroid : Official Journal of the American Thyroid Association
Hosahalli K MohanSusan E M Clarke

Abstract

Weight loss and bone disease in the elderly are very often attributed to malignancy. Rarely, benign treatable conditions may be overlooked. Thyrotoxicosis, a benign treatable condition, needs to be excluded in such patients. The diagnosis may be delayed, since the symptoms are often subtle, and secondary complications including bone disease (osteoporosis) are therefore more frequent at the time of presentation. The case presented here illustrates this well, and also highlights the value of measuring vitamin D levels in such patients. The most interesting aspect of this case was the reciprocal relationship between thyroxine and parathyroid hormone observed in maintaining calcium homeostasis in this thyrotoxic patient with low vitamin D levels.

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Citations

May 26, 2007·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Ailsa J HallHoward L Rhinehart

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