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Publication : Increased metabolic rate in X-linked hypophosphatemic mice.

First Author  Vaughn LK Year  1986
Journal  Endocrinology Volume  118
Issue  1 Pages  441-5
PubMed ID  3940855 Mgi Jnum  J:8133
Mgi Id  MGI:56602 Doi  10.1210/endo-118-1-441
Citation  Vaughn LK, et al. (1986) Increased metabolic rate in X-linked hypophosphatemic mice. Endocrinology 118(1):441-5
abstractText  Hyp mice are a model for human X-linked hypophosphatemia, the most common form of vitamin D-resistant rickets. It has previously been observed that Hyp mice have a greater food consumption per gram body weight than do normal mice. This led to the search for some alteration in metabolism in Hyp mice. We found that oxygen consumption was significantly higher in Hyp mice than in normal C57BL/6J mice and this was accompanied by an increased percentage of cardiac output being delivered to organs of heat production (liver and skeletal muscle), to the skin, and to bone and a decreased percentage to the gastrointestinal tract of Hyp mice. The increased oxygen consumption in Hyp mice was not associated with increased plasma free T4 levels and was not affected by alterations in plasma phosphate produced by a low phosphate diet. The cause of the increased oxygen consumption is not known, and the role that this change and reported changes in distribution of cardiac output may play in the development of X-linked hypophosphatemia is also unknown. Study of the cardiovascular and thermoregulatory systems in Hyp mice should help increase understanding of the underlying mechanisms of this disease.
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