title: A Combination of Low-Intensity Pulsed Ultrasound and Nanohydroxyapatite Concordantly Enhances Osteogenesis of Adipose-Derived Stem Cells From Buccal Fat Pad.
abstract: The osteogenic induction of adipose-derived stem cells (ADSCs) has been regarded as an important step in bone tissue engineering. In the present study, we focused on the buccal fat pad (BFP) as a source of adipose tissue, since BFPs are encapsulated by adipose tissue and are often coextirpated during oral surgery. Low-intensity pulsed ultrasound (LIPUS) is effective in the treatment of fractures, and nanohydroxyapatite (NHA) is known as a bone substitute material. Here we investigated the synergistic effects of LIPUS and NHA in the osteogenesis of ADSCs. A combination of LIPUS irritation and NHA as a scaffold significantly increased the osteogenic differentiation of ADSCs in vitro, and in our in vivo study in which ADSCs were transplanted into calvarial bone defects of nude mice, the combinational effect greatly enhanced the new bone formation of the margin of the defects. These results demonstrate that synergistic effects of LIPUS and NHA are capable of effectively inducing the differentiation of ADSCs into osteoblasts, and they suggest a novel therapeutic strategy for bone regeneration by the autotransplantation of ADSCs.
authors: Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University , Tokyo , Japan.
authors: Rika
authors: R
authors: Nagasaki
authors: Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University , Tokyo , Japan.
authors: Yoshiki
authors: Y
authors: Mukudai
authors: Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University , Tokyo , Japan.
authors: Yasumasa
authors: Y
authors: Yoshizawa
authors: Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University , Tokyo , Japan.
authors: Masahiro
authors: M
authors: Nagasaki
authors: Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University , Tokyo , Japan.
authors: Sunao
authors: S
authors: Shiogama
authors: Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University , Tokyo , Japan.
authors: Maiko
authors: M
authors: Suzuki
authors: Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University , Tokyo , Japan.
authors: Seiji
authors: S
authors: Kondo
authors: Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University , Tokyo , Japan.
authors: Satoru
authors: S
authors: Shintani
authors: Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University , Tokyo , Japan.
authors: Tatsuo
authors: T
authors: Shirota
keywords: Adipose-derived stem cells (ADSCs); Bone regeneration; Low-intensity pulsed ultrasound (LIPUS); Nanohydroxyapatite (NHA); Osteoblast