Developmental organization of neurophysin neurons in the human brain
Identifieur interne : 000D37 ( Main/Exploration ); précédent : 000D36; suivant : 000D38Developmental organization of neurophysin neurons in the human brain
Auteurs : Jürgen K. Mai [Allemagne] ; Sabine Lensing Hn [Allemagne] ; André A. Ende [Allemagne] ; Michael V. Sofroniew [Royaume-Uni]Source :
- Journal of Comparative Neurology [ 0021-9967 ] ; 1997-09-01.
English descriptors
- KwdEn :
Abstract
Neurophysin (NPH) was detected immunohistochemically in 34 human brains ranging in age from 10 weeks of gestation (wg) to 3 months postnatal. Weakly‐stained NPH‐immunoreactive (NPH‐IR) cells were already aggregated in the lateral hypothalamus in the supraoptic nucleus at 10 wg, the first time point examined. From this time, there was a clear and consistent chronology in the first appearance of NPH‐immunoreactivity in different cell groups progressing from the supraoptic nucleus at 10 wg to cells in the accessory NPH cell group at 13 wg, paraventricular nucleus at 14 wg, suprachiasmatic nucleus at 18 wg and various other well defined clusters in the basal forebrain at 18–20 wg. NPH‐IR fibers were present in the hypothalamo‐hypophyseal tract from 10 wg, and together with other available evidence, our findings suggest the presence of a potentially functional hypothalamo‐hypophyseal system by the end of the first trimester. NPH staining patterns and orientations of cells suggest that NPH‐IR cells originate from the region of the hypothalamic sulcus in a manner consistent with animal studies, and migrate to their settling areas before expressing NPH‐immunoreactivity. In spite of the likelihood that most NPH‐IR cells (with the probable exception of those in the suprachiasmatic nucleus) derive from a single primordium, the final organization of NPH‐IR cells consists of many scattered groups, as seen in the late fetal period and mature brain. Developmental analysis provides further evidence that there is a high degree of conservation in the topographic organization of the numerous diverse NPH‐IR cell groups in humans and other mammals, suggesting that the separation and organization of these groups may be of functional importance. J. Comp. Neurol. 385:477–489, 1997. © 1997 Wiley‐Liss, Inc.
Url:
DOI: 10.1002/(SICI)1096-9861(19970901)385:3<477::AID-CNE10>3.0.CO;2-H
Affiliations:
- Allemagne, Royaume-Uni
- Angleterre, Angleterre de l'Est, District de Düsseldorf, Rhénanie-du-Nord-Westphalie
- Cambridge, Düsseldorf
- Université de Cambridge
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Le document en format XML
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<front><div type="abstract" xml:lang="en">Neurophysin (NPH) was detected immunohistochemically in 34 human brains ranging in age from 10 weeks of gestation (wg) to 3 months postnatal. Weakly‐stained NPH‐immunoreactive (NPH‐IR) cells were already aggregated in the lateral hypothalamus in the supraoptic nucleus at 10 wg, the first time point examined. From this time, there was a clear and consistent chronology in the first appearance of NPH‐immunoreactivity in different cell groups progressing from the supraoptic nucleus at 10 wg to cells in the accessory NPH cell group at 13 wg, paraventricular nucleus at 14 wg, suprachiasmatic nucleus at 18 wg and various other well defined clusters in the basal forebrain at 18–20 wg. NPH‐IR fibers were present in the hypothalamo‐hypophyseal tract from 10 wg, and together with other available evidence, our findings suggest the presence of a potentially functional hypothalamo‐hypophyseal system by the end of the first trimester. NPH staining patterns and orientations of cells suggest that NPH‐IR cells originate from the region of the hypothalamic sulcus in a manner consistent with animal studies, and migrate to their settling areas before expressing NPH‐immunoreactivity. In spite of the likelihood that most NPH‐IR cells (with the probable exception of those in the suprachiasmatic nucleus) derive from a single primordium, the final organization of NPH‐IR cells consists of many scattered groups, as seen in the late fetal period and mature brain. Developmental analysis provides further evidence that there is a high degree of conservation in the topographic organization of the numerous diverse NPH‐IR cell groups in humans and other mammals, suggesting that the separation and organization of these groups may be of functional importance. J. Comp. Neurol. 385:477–489, 1997. © 1997 Wiley‐Liss, Inc.</div>
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