Impaired nerve growth factor homeostasis in patients with bipolar disorder

Izabela Guimarães Barbosa, Rodrigo Barreto Huguet, Fernando Silva Neves, Helton José Reis, Moisés Evandro Bauer, Zoltán Janka, András Palotás, Antônio Lúcio Teixeira

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43 Citations (Scopus)


Objective. Neuro-trophins are critically involved in neuro-plasticity, the impairment of which is a major role-player in bipolar disorder (BD), and their altered levels have been recently advocated in the patho-physiology of this affective malady. The aim of this study, therefore, was to evaluate the plasma levels of nerve growth factor (NGF) in BD patients in comparison with control subjects. Methods. Forty-nine BD type-I individuals (30 in mania and 19 in euthymia) and 36 healthy controls were assessed by Mini-plus, Young mania and Hamilton depression rating scales. NGF levels were detected by ELISA. Results. Plasma NGF concentrations were decreased in BD patients when compared to that seen with controls. BD individuals in mania had lower NGF levels than euthymic patients or controls. NGF levels were negatively correlated with the severity of mania. Conclusions. This is the first study to evaluate NGF levels in BD patients, providing further support to the hypothesis of impaired neuro-plasticity in BD. These data also suggest that NGF measurement could be used for the biological marker for manic state.

Original languageEnglish
Pages (from-to)228-232
Number of pages5
JournalWorld Journal of Biological Psychiatry
Issue number3
Publication statusPublished - Apr 1 2011


  • Biomarker
  • bipolar disorder
  • nerve growth factor (NGF)
  • neuroplasticity
  • neurotrophin

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry

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  • Cite this

    Barbosa, I. G., Huguet, R. B., Neves, F. S., Reis, H. J., Bauer, M. E., Janka, Z., Palotás, A., & Teixeira, A. L. (2011). Impaired nerve growth factor homeostasis in patients with bipolar disorder. World Journal of Biological Psychiatry, 12(3), 228-232.