Document Detail

Evidence for a rostrocaudal organization in dorsal root ganglia during development as demonstrated by intra-uterine WGA-HRP injections into the hindlimb of rat fetuses.
MedLine Citation:
PMID:  1697796     Owner:  NLM     Status:  MEDLINE    
The development of the sensory innervation of the rat hindlimb was studied with special attention to the dorsal root ganglia and the lumbar plexus. Injections of wheat germ agglutinin-horseradish peroxidase were made into the hindlimb of 30 rat fetuses of gestational ages ranging from embryonic day 15-18. Additionally wheat germ agglutinin-horseradish peroxidase was applied to the sciatic nerves of 8 neonatal rats and 3 adults. The saphenous nerves of 2 neonatal rats were labeled. Injections of wheat germ agglutinin-horseradish peroxidase (WGA-HRP) into the hindlimb of the fetuses result in completely and partially labeled dorsal root ganglia. Partial labeling always concerns the rostral or caudal part of a dorsal root ganglion. The associated dorsal roots of partially labeled dorsal root ganglia are also partially labeled in a corresponding rostrocaudal fashion. Reconstructions of the labeled nerves following injections into the hindlimb suggested that the somata of the sensory neurons of a particular nerve can be restricted to the rostral or caudal half of a dorsal root ganglion. For example: the rostral half of the fourth lumbar dorsal root ganglion belongs to the femoral nerve and its caudal half to the sciatic nerve. The results of application of wheat germ agglutinin-horseradish peroxidase to the central ends of the cut sciatic and saphenous nerves in neonatal rats confirmed these observations. So the rostrocaudal organization in the dorsal root ganglia stems from the distribution pattern of the peripheral nerves.
W J Wessels; H K Feirabend; E Marani
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Brain research. Developmental brain research     Volume:  54     ISSN:  0165-3806     ISO Abbreviation:  Brain Res. Dev. Brain Res.     Publication Date:  1990 Jul 
Date Detail:
Created Date:  1990-10-12     Completed Date:  1990-10-12     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8908639     Medline TA:  Brain Res Dev Brain Res     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  273-81     Citation Subset:  IM    
Department of Physiology, University of Leyden, The Netherlands.
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MeSH Terms
Embryonic and Fetal Development*
Ganglia, Spinal / cytology,  embryology*,  growth & development
Hindlimb / cytology,  embryology,  innervation*
Horseradish Peroxidase / diagnostic use
Neurons, Afferent / cytology*,  physiology
Peripheral Nerves / cytology,  embryology*,  growth & development
Rats, Inbred Strains
Wheat Germ Agglutinin-Horseradish Peroxidase Conjugate
Wheat Germ Agglutinins / diagnostic use
Reg. No./Substance:
0/Wheat Germ Agglutinin-Horseradish Peroxidase Conjugate; 0/Wheat Germ Agglutinins; EC 1.11.1.-/Horseradish Peroxidase

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