title: [Influence of curcumin--loaded poly (lactide-co-glycolide) films on the proliferation of vascular smooth muscle cells].
abstract: In-stent restenosis is the major problem of percutaneous coronary interventions. Drug-eluting stent became a landmark in the treatment of coronary disease. Curcumin could be used for drug-eluting stent due to its antithrombogenity and antiproliferative properties. In this paper, 3-(4, 5-Dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assays were performed to decide the optimal concentration of curcumin for inhibiting the proliferation of vascular smooth muscle cells (VSMC). The result disclosed that more than 80% of VSMC were inhibited when the concentration of curcumin ranged from 2.5 microg/ml to 10 microg/ml (P < 0.05, compared to ethanol). Three weight percent curcumin-loaded films (3wt%, 5wt%, 8wt%) were prepared using a biodegradable polymer (poly (lactic acid-co-glycol acid), PLGA) as the carrier of curcumin. The release of lactate dehydrogenase (LDH) was used to evaluate the immediate toxicity of the curcumin-loaded PLGA films, and the three concentration curcumin-loaded films were revealed to be of no acute toxicity to the smooth muscle cells. The results of Alamar Blue test indicated that the curcumin-loaded films had better antiproliferation effect than did the 316 stainless steel (SS). Therefore, these films may be used for stent coating to inhibit the in-stent restenosis induced by VSMC proliferation.
authors.affiliation: Key Lab for Advanced Technologies of Materials of Ministry of education, Southwest Jiatong University, Chengdu, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Ren
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.forename: Jiaju
authors.initials: J
authors.lastname: Tang
authors.forename: Changjiang
authors.initials: C
authors.lastname: Pan
authors.forename: Nan
authors.initials: N
authors.lastname: Huang
mesh_terms: D015906:Angioplasty, Balloon, Coronary; D000818:Animals; D002339:Carotid Arteries / Q000166:cytology; D049109:Cell Proliferation / Q000187:drug effects*; D002478:Cells, Cultured; D020099:Coated Materials, Biocompatible / Q000494:pharmacology*; D023903:Coronary Restenosis / Q000517:prevention & control; D003474:Curcumin / Q000494:pharmacology*; D054855:Drug-Eluting Stents; D019344:Lactic Acid / Q000494:pharmacology*; D009131:Muscle, Smooth, Vascular / Q000166:cytology*; D011100:Polyglycolic Acid / Q000494:pharmacology*; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D051381:Rats
chemical_list: D020099:Coated Materials, Biocompatible; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D003474:Curcumin