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Hypothalamic-endocrine aspects in Huntington's disease

Asa Petersén1, Maria Björkqvist

  • 1Neuronal Survival Unit, Department of Experimental Medical Science, Wallenberg Neuroscience Center, BMC A10, 22184 Lund, Sweden. asa.petersen@med.lu.se

The European Journal of Neuroscience
|August 24, 2006
PubMed

Insights

Huntington's disease (HD) involves brain cell death and hypothalamic dysfunction. Investigating neuroendocrine changes may reveal biomarkers for new Huntington's disease therapies.

Area of Science:

  • Neuroscience
  • Genetics
  • Endocrinology

Background:

  • Huntington's disease (HD) is a hereditary neurodegenerative disorder caused by CAG triplet repeat expansion in the huntingtin gene.
  • Neuropathology in HD includes protein aggregates and neuronal loss in the striatum and cerebral cortex.
  • Early HD stages show hypothalamic atrophy, affecting orexin and somatostatin cell populations, potentially explaining symptoms like sleep and weight disturbances.

Purpose of the Study:

  • To explore the role of hypothalamic and endocrine system dysfunction in Huntington's disease.
  • To investigate neuroendocrine changes as potential biomarkers for HD.
  • To identify novel therapeutic targets for Huntington's disease.

Main Methods:

  • Review of neuropathological findings in HD, focusing on the hypothalamus.
  • Analysis of endocrine changes in HD patients and mouse models.
  • Consideration of neuroendocrine factors in cerebrospinal fluid, blood, and urine as potential biomarkers.

Main Results:

  • Hypothalamic atrophy and neuronal loss occur early in HD.
  • HD patients exhibit endocrine alterations, including elevated cortisol, reduced testosterone, and increased diabetes prevalence.
  • HD mouse models show hypothalamic-pituitary-adrenal axis dysfunction and pancreatic beta-cell/adipocyte issues.

Conclusions:

  • The hypothalamus and endocrine system are significantly impacted in Huntington's disease.
  • Neuroendocrine factors may serve as valuable biomarkers for disease state and therapeutic response in HD.
  • Understanding these neuroendocrine changes could lead to novel therapeutic strategies for Huntington's disease.

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