Human microvascular lymphatic and blood endothelial cells produce fibrillin: deposition patterns and quantitative analysis
Identifieur interne : 005861 ( Main/Exploration ); précédent : 005860; suivant : 005862Human microvascular lymphatic and blood endothelial cells produce fibrillin: deposition patterns and quantitative analysis
Auteurs : Antonella Rossi [Italie] ; Erica Gabbrielli [Italie] ; Marilisa Villano [Italie] ; Mario Messina [Italie] ; Francesco Ferrara [Italie] ; Elisabetta Weber [Italie]Source :
- Journal of Anatomy [ 0021-8782 ] ; 2010.
Abstract
Fibrillin microfibrils constitute a scaffold for elastin deposition in the wall of arteries and form the anchoring filaments that connect the lymphatic endothelium to surrounding elastic fibers. We previously reported that fibrillin is deposited in a honeycomb pattern in bovine arterial endothelial cells, which also deposit microfibril-associated glycoprotein (MAGP)-1, whereas thoracic duct endothelial cells form an irregular web. The present immunohistochemical study was designed to verify whether lymphatic and blood human dermal microvascular endothelial cells (HDMECs) isolated from human foreskin by the sequential use of a pan-endothelial marker, CD31, and the lymphatic specific marker, D2-40, deposit fibrillin and MAGP-1. In both cell types, fibrillin and MAGP-1 co-localized and were deposited with different patterns of increasing complexity co-existing in the same culture. Fibrillin microfibrils formed a wide-mesh honeycomb leaving fibrillin-free spaces that were gradually filled. This modality of fibrillin deposition, similar to that of bovine large artery endothelial cells, was basically the same in blood and lymphatic HDMECs. In some lymphatic HDMECs, fibrillin was initially deposited as uniformly scattered short fibrillin strands probably as a result of anchoring filaments carried over from the vessels of origin. Our findings show that blood and lymphatic endothelial cells participate in fibrillin deposition in human skin.
Url:
DOI: 10.1111/j.1469-7580.2010.01306.x
PubMed: 21039476
PubMed Central: 3039183
Affiliations:
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