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Thalamic calcification in vitamin D receptor knockout mice.

Allan Kalueff1, Elena Loseva, Hannu Haapasalo

  • 1Department of Anatomy, Medical School, University of Tampere, Finland. avkalueff@inbox.ru

Neuroreport
|April 28, 2006
PubMed
Summary

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Vitamin D deficiency in aging mice lacking the vitamin D receptor causes brain calcification. This finding suggests a potential new model for studying intracranial calcification in humans.

Area of Science:

  • Neuroscience
  • Endocrinology
  • Mineral Metabolism

Background:

  • The nuclear vitamin D receptor (VDR) plays a crucial role in various brain functions.
  • VDR signaling is essential for maintaining calcium and phosphate homeostasis.
  • Disruptions in VDR signaling have been implicated in neurological disorders.

Purpose of the Study:

  • To investigate the effects of VDR deficiency on brain mineralization.
  • To determine if VDR knockout mice serve as a model for intracranial calcification.

Main Methods:

  • Utilized aging nuclear vitamin D receptor knockout mice.
  • Analyzed brain tissue for calcification and mineral content.
  • Examined the presence of laminated bodies within the thalamus.

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Main Results:

  • Aging VDR knockout mice exhibited symmetric thalamic calcification.
  • Numerous calcium/phosphate-containing laminated bodies were observed.
  • These findings correlate with clinical observations in vitamin D-deficient patients.

Conclusions:

  • VDR deficiency leads to significant brain mineralization in mice.
  • VDR knockout mice represent a potential experimental model for intracranial calcification.
  • This study highlights the importance of VDR in preventing brain calcification.