4.5 Article

Neurogenic Hippocampal Targets of Deep Brain Stimulation

期刊

JOURNAL OF COMPARATIVE NEUROLOGY
卷 519, 期 1, 页码 6-20

出版社

WILEY
DOI: 10.1002/cne.22503

关键词

deep brain stimulation; anterior thalamus; adult neurogenesis; transgenic mice; stem cells

资金

  1. National Institute of Mental Health [MH081258]
  2. New York State Stem Cell Science (NYSTEM) [57850205]
  3. National Alliance for Research on Schizophrenia and Depression (NARSAD)
  4. Seraph Foundation
  5. Ira Hazan Foundation
  6. Robertson Foundation
  7. Cody Center for Autism and Developmental Disabilities
  8. Hope for Depression Foundation
  9. NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES [R21ES011942] Funding Source: NIH RePORTER
  10. NATIONAL INSTITUTE OF MENTAL HEALTH [R21MH081258] Funding Source: NIH RePORTER

向作者/读者索取更多资源

Deep brain stimulation (DBS) is being used to treat movement, neurological, and psychiatric disorders; recently it has been successfully applied to patients with treatment-resistant depression or in minimally conscious state. In addition to its clinical importance, DBS presents a powerful approach to target specific neural circuits and determine the functional relationship between the components of these circuits. We examined the effect of high-frequency stimulation of a crucial component of the limbic circuitry, the anterior thalamic nuclei (ATN), on the generation of new neurons in the dentate gyrus (DG) of the hippocampus, another component of the same circuitry. Adult hippocampal neurogenesis emerges as a strong correlate of antidepressant treatments; however, in most cases, the progenitor cell population targeted by a specific treatment is not known. Using reporter mouse lines designed to quantify changes in selected classes of neural progenitors, we found that high-frequency stimulation of the ATN increases symmetric divisions of a defined class of neural progenitors in the DG; this effect is later manifested as an increased number of new neurons. The affected class of neural progenitors is also affected by the antidepressant fluoxetine (Prozac) and physical exercise (running). This indicates that neurogenic stimuli of different natures can converge on the same neurogenic target in the DG. Our results also suggest that hippocampal neurogenesis may be used as a sensitive indicator of the limbic circuitry activation induced by DBS. J. Comp. Neurol. 519:6-20, 2011. (C) 2010 Wiley-Liss, Inc.

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