Subpopulations of migrating neurons express different levels of LHRH in quail and chick embryos

Chen Gao, Reema Abou-Nasr, Robert B Norgren

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

LHRH neurons of the septal-preoptic area originate in the olfactory placode and migrate in the olfactory nerve into the brain during embryonic development. In adult birds, LHRH neurons have been found in the septal-preoptic area, mesencephalon and more recently in the lateral anterior nucleus of the thalamus (LA). LHRH neurons of the LA do not originate in the olfactory placode. Using immunocytochemistry, we examined the distribution of LHRH neurons in the embryonic and adult quail nervous system. The pattern of LHRH immunostaining in quail embryos was similar to that seen in chick embryos. However, there were many fewer neurons immunostained for LHRH from the olfactory placode to the septal-preoptic area in quail than in chick embryos. In contrast, there were more labeled neurons and more intense LHRH immunostaining in the thalamus of the quail than in the thalamus of chick embryos. In agreement with other studies, our data suggest that there are species differences in LHRH expression in migrating neurons. The current results should also be considered for quail-chick chimeras involving the olfactory placode.

Original languageEnglish (US)
Pages (from-to)237-244
Number of pages8
JournalDevelopmental Brain Research
Volume91
Issue number2
DOIs
StatePublished - Feb 26 1996

Fingerprint

Quail
Chick Embryo
Gonadotropin-Releasing Hormone
Neurons
Septum of Brain
Preoptic Area
Thalamus
Anterior Thalamic Nuclei
Olfactory Nerve
Lateral Thalamic Nuclei
Mesencephalon
Nervous System
Birds
Embryonic Development
Embryonic Structures
Immunohistochemistry
Brain

Keywords

  • Development
  • GnRH
  • Migration
  • Olfactory
  • Quail-chick chimera
  • Thalamus

ASJC Scopus subject areas

  • Developmental Neuroscience
  • Developmental Biology

Cite this

Subpopulations of migrating neurons express different levels of LHRH in quail and chick embryos. / Gao, Chen; Abou-Nasr, Reema; Norgren, Robert B.

In: Developmental Brain Research, Vol. 91, No. 2, 26.02.1996, p. 237-244.

Research output: Contribution to journalArticle

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