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Biomedical subjects

B Kantelip

Publications and source records attributed to B Kantelip.

At least 91 records · Page 5Linked to original sources
PubMed1983

[Bronchiolar cells of the human fetal lung from 15 to 26 weeks of gestation].

The authors report an ultrastructural study about the human fetal bronchiole from seven human fetus which gestational age extend from fifteen to twenty-six weeks. It follows a precedent report concerning the pulmonary acinus. It is thus possible to definite the happening date of the different cellular populations of the bronchiolar layer, their morphology, their distribution, and their differentiation modalities. All those cells have the same endodermal origin from the undifferentiated columnar cell. From the fifteenth week, the three main cellular patterns with a full differentiated aspect are present: ciliated cell, Clara cell, and neurosecretory cell and as a fourth type: the intermediary aspect cell; but the undifferentiated columnar cell is still predominant. From the nineteenth week, those four cellular patterns are predominant. At last, the connection between alveolar and bronchiolar layers is studied at the bronchiolo-alveolar junction. From those data and the literature, the authors consider the bronchiolo-alveolar renewal, in which they think that the Clara cell and/ or an immediate precursor could take a leading part.

Female↗
PubMed1983

[Electron microscopy study of the development of the pulmonary alveolus in the human fetus].

An ultrastructural study of distal human fetal lung between the fifteenth and nineteenth weeks of gestation is performed. All the cells of the epithelial lining layer have an endodermal origin and are provided by one cellular pattern: the columnar undifferentiated cell. From nineteenth week of gestation a differentiation into alveolar et bronchiolar ways is observed. Inside cells which are in type II pneumonocyte differentiation, cytoplasmic modifications has been observed. These modifications can agree with lamellar inclusion bodies precursors. Otherwise, respective part of type II pneumonocytes and Clara cells, in surfactant synthesis is discussed, as well as the chronological link connecting between them the precursors of the lamellar inclusions bodies, and the mode of renewal of alveolar cells.

Cell Differentiation↗
PubMed1981

[One case of dacryolithiasis of the lacrimal sac (author's transl)].

Report is given of one case of dacryolithiasis of a diverticulum of the lacrimal sac. The case was demonstrated by dacryocystography and spontaneous passage of the case through the nose. Histopathological examination revealed this cast to be composed of layers of cellular debris, accompanied by an infiltration of leucocytes. There was a mycotic infection most likely with candida. The diverticulum of the sac demonstrated squamous metaplasia of the epithelium and mild inflammation. The responsibility of keratinized cells and mycotic infection in the pathogenesis of dacryolith is discussed.

Adult↗