title: The incorporation of poly(lactic-co-glycolic) acid nanoparticles into porcine small intestinal submucosa biomaterials.
abstract: Small intestinal submucosa (SIS) derived from porcine small intestine has been intensively studied for its capacity in repairing and regenerating wounded and dysfunctional tissues. However, SIS suffers from a large spectrum of heterogeneity in microarchitecture leading to inconsistent results. In this study, we introduced nanoparticles (NPs) to SIS with an intention of decreasing the heterogeneity and improving the consistency of this biomaterial. As determined by scanning electron microscopy and urea permeability, the optimum NP size was estimated to be between 200 nm and 500 nm using commercial monodisperse latex spheres. The concentration of NPs that is required to alter pore sizes of SIS as determined by urea permeability was estimated to be 1 mg/ml 260 nm poly(lactic-co-glycolic) acid (PLGA) NPs. The 1mg/ml PLGA NPs loaded in the SIS did not change the tensile properties of the unmodified SIS or even alter pH values in a cell culture environment. More importantly, PLGA NP modified SIS did not affect human mammary endothelial cells (HMEC-1) morphology or adhesion, but actually enhanced HEMC-1 cell growth.
authors: Department of Chemical, Biological and Materials Engineering, University of Oklahoma, Norman, OK 73019, USA.
authors: Fadee G
authors: FG
authors: Mondalek
authors: Benjamin J
authors: BJ
authors: Lawrence
authors: Bradley P
authors: BP
authors: Kropp
authors: Brian P
authors: BP
authors: Grady
authors: Kar-Ming
authors: KM
authors: Fung
authors: Sundar V
authors: SV
authors: Madihally
authors: Hsueh-Kung
authors: HK
authors: Lin
mesh_terms: D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry*; D001696:Biomechanical Phenomena; D002460:Cell Line; D049109:Cell Proliferation; D042783:Endothelial Cells / Q000166:cytology; D006801:Humans; D007413:Intestinal Mucosa / Q000737:chemistry* / Q000648:ultrastructure; D007421:Intestine, Small / Q000737:chemistry / Q000648:ultrastructure; D019344:Lactic Acid / Q000737:chemistry*; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles / Q000737:chemistry / Q000648:ultrastructure; D010316:Particle Size; D010539:Permeability; D011100:Polyglycolic Acid / Q000737:chemistry*; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011108:Polymers / Q000737:chemistry*; D012038:Regeneration; D013552:Swine; D023822:Tissue Engineering / Q000379:methods; D014508:Urea; D014945:Wound Healing
chemical_list: D001672:Biocompatible Materials; D011108:Polymers; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D014508:Urea