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Related Experiment Videos

TrkA expression in olfactory epithelium and bulb during development.

I Horikawa1, T Miwa, T Ishimaru

  • 1Department of Otorhinolaryngology, School of Medicine, Kanazawa University, Takaramachi, Japan.

Neuroreport
|July 29, 1999
PubMed
Summary
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High-affinity nerve growth factor receptor (trkA) is expressed in the developing mouse olfactory system, including receptor cells. In adults, trkA expression reappears in receptor cells after colchicine treatment, indicating its continuous role.

Area of Science:

  • Neuroscience
  • Developmental Biology

Background:

  • The olfactory nervous system relies on specific molecular cues for development and maintenance.
  • High-affinity nerve growth factor receptor (trkA) plays a crucial role in neuronal development and survival.

Purpose of the Study:

  • To investigate the expression patterns of trkA in the developing and adult mouse olfactory nervous system.
  • To determine the effect of colchicine treatment on trkA expression in adult olfactory epithelia.

Main Methods:

  • Immunohistochemistry was used to detect trkA expression.
  • Studied olfactory tissues from embryonic, neonatal, and adult mice.
  • Examined olfactory tissues from adult mice treated with colchicine.

Main Results:

Related Experiment Videos

  • trkA immunoreactivity was observed in basal and receptor cells, as well as olfactory nerve fibers, in developing mice.
  • In adult mice, trkA was primarily found in basal cells.
  • Colchicine treatment in adult mice led to the reappearance of trkA in receptor cells and increased nerve fiber immunoreactivity.

Conclusions:

  • trkA expression is a continuous process throughout the lifespan of the olfactory nervous system.
  • The olfactory nervous system exhibits dynamic trkA expression, particularly during development and in response to injury or experimental manipulation.