title: Preparation and evaluation of porous poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) hydroxyapatite composite scaffolds.
abstract: Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) and PHBHHx-hydroxyapatite (HAP) composite scaffolds have been prepared by phase separation and subsequent sublimation of the solvent for bone tissue engineering. Scanning electron microscopy (SEM), porosity measurement, mechanical tests, and thermogravimertric analysis (TGA) are used to analyze the physical properties of the scaffolds. The biocompatibility and osteoconductivity are assessed by examining the morphology, proliferation, and differentiation of MC3T3-E1 osteoprogenitor cells seeded on the scaffolds. The PHBHHx-HAP composite scaffolds show better mechanical properties, biocompatibility, and osteoconductivity than the PHBHHx scaffolds. The results suggest that PHBHHx-HAP composite scaffolds can be employed as a promising candidate for bone reconstruction.
authors: Department of Biological Sciences and Biotechnology, State Key Laboratory of Biomembrane and Membrane Biotechnology Tsinghua University, Beijing, China.
authors: Jing Xi
authors: Ling Zhang
authors: Zhenhu An Zheng
authors: Guoqiang Chen
authors: Yandao Gong
authors: Nanming Zhao
authors: Xiufang Zhang
mesh_terms: D020155:3-Hydroxybutyric Acid / Q000737:chemistry*; D016475:3T3 Cells; D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry*; D018786:Bone Substitutes / Q000737:chemistry*; D002208:Caproates / Q000737:chemistry*; D002448:Cell Adhesion / Q000502:physiology*; D049109:Cell Proliferation; D002470:Cell Survival / Q000502:physiology*; D017886:Durapatite / Q000737:chemistry*; D008422:Materials Testing; D051379:Mice; D010316:Particle Size; D016062:Porosity; D013499:Surface Properties; D000094122:Polyhydroxybutyrates
chemical_list: D020155:3-Hydroxybutyric Acid; D001672:Biocompatible Materials; D018786:Bone Substitutes; D002208:Caproates; D017886:Durapatite; C115940:poly(3-hydroxybutyrate-co-3-hydroxyhexanoate); D000094122:Polyhydroxybutyrates