期刊
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
卷 12, 期 12, 页码 1281-1292出版社
VSP BV
DOI: 10.1163/156856202753419222
关键词
poly(ester-anhydride); polymeric prodrug; fluorescent biomaterials; in vivo degradation; biocompatibility
The degradation, tissue compatibility, and toxicology of a novel class of alternate poly(ester-anhydrides) were assessed in rats. It was observed that the degradation rate of the polymers in vivo was slower than that in vitro. In addition, erosion and intact zone were observed for all the polymers. IR and SEM analysis of the outer erosion and inner intact zone revealed that the outer zone degraded more rapidly than the inner zone. Such results were similar to that in vitro. All the studied poly(ester-anhydrides) produced mild inflammatory reactions and tissue encapsulation by layers of fibroblastic cells in vivo. Observation of liver and kidney tissue by light microscopy suggested the hydrolytic products of the studied poly(ester-anhydrides) had no harmful effects on the normal tissue/organs. In addition, the polymer and the breakdown products were found to be non-mutagenic by examination of micronucleus in bone marrow.
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