Mode d'action et propri�t�s des facteurs inducteurs issus du m�senchyme gastrique et des m�senchymes h�t�rologues

David, Danielle

doi:10.1007/bf00575519

W. Roux' Archiv f. Entwicklungsmechanik

1972

DOI: 10.1007/bf00575519

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Mode d'action et propri�t�s des facteurs inducteurs issus du m�senchyme gastrique et des m�senchymes h�t�rologues

Danielle David

Abstract: Experimental associations of gastric epithelium of the Rabbit foetus with homologous or heterologous mesenchyme, separated by membrane filter or "partially" associated, permit us to prove the existence of two types of inductors.The first factor induces the epithelial morphogenesis. It is thermostable and highly diffusible.The second factor, organospecific, is more or less favorable to the differentiation of the gastric epithelium according to the nature of the mesenchyme. Lightly diffusible and thermolabile, i… Show more

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1973

1982

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Cited by 4 publications

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Heterotypic differentiation of chick allantoic endoderm under the influence of various mesenchymes of the digestive tract

Yasugi

Mizuno

1974

W. Roux' Archiv f. Entwicklungsmechanik

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Dissociation and reassociation experimentsin vitro were carried out to investigate the differentiation potency of chick allantoic endoderm under the influence of digestive tract mesenchymes. 1. The allantoic endoderm, when cultured alonein vitro, shows no differentiation whatsoever. 2. The allantoic endoderm, when cultivated combined with the mesenchyme of oesophagus, can differentiate into a stratified cuboidal epithelium, similar to that of the embryonic oesophagus. 3. Cultivation of the allantoic endoderm combined with the proventricular mesenchyme causes differentiation of cylindrical epithelium and glands, which are characteristic of the embryonic proventriculus. 4. The combination of the allantoic endoderm and the gizzard mesenchyme results in the differentiation of pseudostratified columnar epithelium, the cells of which possess glycogen granules like those in the normal embryonic gizzard. 5. If the allantoic endoderm is cultured on the mesenchyme of the small intestine, the endodermal cells are converted into simple columnar epithelial cells similar to those of normal embryonic small intestine. 6. The competence for the heterotypic development of the allantoic endoderm appears to be a function of a developmental time sequence: it is highest in the youngest (3-day) allantoic endoderm, and gradually lost in older embryos. 7. In all combinations tested, there appear goblet cells in the epithelium when the explants are cultured more than 10 days. These cells are never observed in intact oesophagus, proventriculus and gizzard, whether in normal development or in culture.

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Heterotypic differentiation of chick allantoic endoderm under the influence of various mesenchymes of the digestive tract

Yasugi

Mizuno

1974

W. Roux' Archiv f. Entwicklungsmechanik

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How does the extracellular matrix direct gene expression?

Bissell

Hall

Parry

1982

Journal of Theoretical Biology

1,437

810

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Differentiation of the Digestive Tract Epithelium Under the Influence of the Heterologous Mesenchyme of the Digestive Tract in the Bird Embryos

Yasugi

Mizuno

1978

Dev Growth Differ

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The endoderm of the oesophagus, proventriculus, gizzard or small intestine of the 5-day-old chick or quail embryo was cultivated in combination with homologous or heterologous mesenchyme on a WOLFF 'and HAFFEN medium for 7 to 21 days or on the chorio-allantoic membrane (CAM) for 8 days.In association with heterologous mesenchyme, the differentiation of the epithelium was both honiotypical and heterotypical depending on the region of the digestive tract. The oesophagus and small intestine differentiate mainly homotypically both in culture and on CAM, but the gizzard and proventriculus show heterotypic differentiation particularly on CAM. Thus, the endoderm of the digestive tract of the 5-day-old chick or quail embryo, though rather "determined", still reacts to the heterologous stimuli of the mesenchyme to some degree.With homologous mesenchyme the epithelium always differentiated homotypically.

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Mode d'action et propri�t�s des facteurs inducteurs issus du m�senchyme gastrique et des m�senchymes h�t�rologues

Cited by 4 publications

References 16 publications

Heterotypic differentiation of chick allantoic endoderm under the influence of various mesenchymes of the digestive tract

Heterotypic differentiation of chick allantoic endoderm under the influence of various mesenchymes of the digestive tract

How does the extracellular matrix direct gene expression?

Differentiation of the Digestive Tract Epithelium Under the Influence of the Heterologous Mesenchyme of the Digestive Tract in the Bird Embryos

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