Degradation of metal-labeled collagen implants: ultrastructural and X-ray microanalysis.

Abstract:

:Three different metal salts, silver nitrate, uranyl acetate and lead citrate, are mixed with a collagen gel to produce 3 metal/collagen sponges. These sponges were implanted subcutaneously in the rat and samples harvested after 5 days of implantation. TEM observation shows that sponges are degraded and digested by macrophages, polymorphonuclear cells (PMN) and fibroblasts. We have observed that the location of the precipitates differs according to the metal added to the collagen. Lead precipitates stay longer on the collagen mesh while silver precipitates, after 5 days, are soon digested and are found in phagosomes of macrophages. Uranium precipitates are digested with the collagen and uranium/collagen associated pictures are seen in phagolysosomes. Metal precipitates accumulated in phagolysosomes of macrophagic cells are recognized by X-ray microanalysis. The degradation process of implanted collagen is discussed.

journal_name

Tissue Cell

journal_title

Tissue & cell

authors

Anselme K,Julliard K,Blaineau S

doi

10.1016/0040-8166(90)90092-n

subject

Has Abstract

pub_date

1990-01-01 00:00:00

pages

81-91

issue

1

eissn

0040-8166

issn

1532-3072

pii

0040-8166(90)90092-N

journal_volume

22

pub_type

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