Journal article

Differential loss of spinal sensory but not motor neurons in the p75(NTR) knockout mouse

SS Murray, PF Bartlett, SS Cheema

NEUROSCIENCE LETTERS | ELSEVIER SCI IRELAND LTD | Published : 1999

Abstract

Sensory neurons in the dorsal root ganglia (DRG) and motor neurons in the spinal cord express the 75 kDa low-affinity neurotrophin receptor (p75NTR) during prenatal development. The p75NTR gene knockout mouse provides a unique opportunity to assess the role of p75NTR during this period. Quantitative analysis of the p75NTR knockout mouse revealed a significant developmental loss of sensory neurons. In the cervico-thoracic ganglia approximately 75% of the neurons are lost, while in the lumbar ganglia the loss is approximately 50%. In contrast, motor neurons were not lost in either the cervical or lumbar spinal cord. These data suggest that p75NTR is essential for the prenatal survival of a sig..

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University of Melbourne Researchers