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Título: Heterogeneity of mesenchymal cells in human amniotic membrane at term
Fecha de publicación: 2024
Editorial: Universidad de Murcia, Departamento de Biologia Celular e Histiologia
Cita bibliográfica: Histology and Histopathology Vol. 39, nº5 (2024)
ISSN: 0213-3911
1699-5848
Materias relacionadas: CDU::6 - Ciencias aplicadas::61 - Medicina::616 - Patología. Medicina clínica. Oncología
Palabras clave: Heterogeneity
Mesenchymal cells
Fibroblast layer
Fibronectin
Human amniotic membrane
Resumen: There is increasing interest in understanding the tissue biology of human amniotic membrane (hAM) given its applications in medicine. One cellular component is mesenchymal cells, which can be extracted, cultured and differentiated "in vitro" into various cell types. These studies show that there is heterogeneity among mesenchymal cells. The aim of this work is to study the membrane "in situ" to determine whether this cellular heterogeneity exists. The hAMs were obtained from caesarean deliveries at term and analyzed by histological techniques. Types I-III mesenchymal cells and Hofbauer were distinguished by light microscopy. Histochemically, mesenchymal cell types showed successively increasing positivity to: PAS, vimentin, fibronectin, and Concanavalin-A; VGEF, TGF-β2, PDGF-C, FGF-2. By the semiquantitative point of view, the percentage of Type II cells was 60%, significantly higher than the other types. With transmission electron microscopy, an intermediate cell type between II-III was observed. Strong vesiculation of the rough endoplasmic reticulum (RER) with exocytosis was observed. In addition, an accumulation of a similar material to the extracellular matrix in the RER caused its dilation especially in type IIITEM cells. Some of this material acquired a globular structure. These structures were also found free in the extracellular matrix. In conclusion, the mesenchymal cells of the fibroblastic layer of the hAMs studied are heterogeneous, with some undifferentiated and others with a probably senescent fibroblastic phenotype with accumulation in their RER of fibronectin. These results may be of interest to extract mesenchymal cells from hAMs for use in regenerative medicine and to better understand the mechanisms of fetal membrane rupture
Autor/es principal/es: Cortés Sandoval, Salvador
Seco Rovira, Vicente
Beltrán Frutos, Ester
Serrano Sánchez, Mª Isabel
Martínez Hernández, Jesús
Ferrer, Concepción
Delgado, Juan L.
Insausti, Carmen L.
Blanquer, Miguel
Pastor, Luis M.
URI: http://hdl.handle.net/10201/141426
DOI: https://doi.org/10.14670/HH-18-660
Tipo de documento: info:eu-repo/semantics/article
Número páginas / Extensión: 21
Derechos: info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Aparece en las colecciones:Vol.39, nº5 (2024)

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