| First Author | Jiang Y | Year | 2020 |
| Journal | Arch Oral Biol | Volume | 115 |
| Pages | 104736 | PubMed ID | 32371135 |
| Mgi Jnum | J:336079 | Mgi Id | MGI:7466448 |
| Doi | 10.1016/j.archoralbio.2020.104736 | Citation | Jiang Y, et al. (2020) Low-intensity pulsed ultrasound improves osseointegration of dental implant in mice by inducing local neuronal production of alphaCGRP. Arch Oral Biol 115:104736 |
| abstractText | OBJECTIVE: This study aimed to explore the effect of Low-intensity pulsed ultrasound (LIPUS) on implant osseointegration and elucidate the role of alpha-calcitonin gene-related peptide (alphaCGRP) in this process. DESIGN: In vivo, alphaCGRP(+/+) (Wild-type model) mice and alphaCGRP(-/-) (Knock-out model) mice with implants immediately placed in the maxillary first molars extraction sockets were treated with LIPUS. We detected details of peri-implant bone tissues by micro-CT, real-time PCR and histological analysis. In vitro, alphaCGRP(+/+) and alphaCGRP(-/-) dorsal root ganglia (DRG) neurons were cultured and exposed to LIPUS. Then conditioned media from these neurons were collected and added to osteoblasts to analyze cell differentiation, mineralization and proliferation by real-time PCR, alkaline phosphatase (ALP) and cell counting kit-8 (CCK-8) assay. Besides, ELISA was performed to determine the effect of LIPUS on the alphaCGRP secretion in neurons. RESULTS: In vivo tests revealed that alphaCGRP(-/-) mice displayed worse osseointegration when compared to alphaCGRP(+/+) mice. LIPUS could enhance implant osseointegration in alphaCGRP+/+ mice but had little effect on alphaCGRP(-/-) mice. Meanwhile, alphaCGRP was elevated during the osseointegration with LIPUS treatment. In vitro, LIPUS promoted alphaCGRP secretion in DRG neurons, thereby enhanced osteogenic differentiation and mineralization of osteoblasts. Also we proved that the effects of LIPUS was duty cycle-related and LIPUS of 80% duty cycle had the strongest impacts. CONCLUSIONS: Our findings demonstrated that LIPUS could enhance osseointegration of dental implant by inducing local neuronal production of alphaCGRP, providing a new idea to promote peri-implant osseointegration and bone regeneration. |
