Low-intensity pulsed ultrasound (LIPUS) stimulates mineralization of MC3T3-E1 cells through calcium and phosphate uptake.
Ultrasonics
; 84: 290-295, 2018 Mar.
Article
in En
| MEDLINE
| ID: mdl-29182945
The present study aimed to evaluate the effect of low-intensity pulsed ultrasound (LIPUS) on pre-osteoblast mineralization using in vitro bioassays. Pre-osteoblastic MC3T3-E1 cells were exposed to LIPUS at 1â¯MHz frequency, 0.2â¯W/cm2 intensity and 20% duty cycle for 30â¯min. The analyses were carried out up to 336â¯h (14â¯days) after exposure. The concentration of collagen, phosphate, alkaline phosphatase, calcium and transforming growth factor beta 1 (TGF-ß1) in cell supernatant and the presence of calcium deposits in the cells were analyzed. Our results showed that LIPUS promotes mineralized nodules formation. Collagen, phosphate, and calcium levels were decreased in cell supernatant at 192â¯h after LIPUS exposure. However, alkaline phosphatase and TGF-ß1 concentrations remained unchanged. Therapeutic pulsed ultrasound is capable of stimulating differentiation and mineralization of pre-osteoblastic MC3T3-E1 cells by calcium and phosphate uptake with consequent hydroxyapatite formation.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Osteoblasts
/
Phosphates
/
Calcium
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Collagen
/
Durapatite
/
Ultrasonic Waves
Limits:
Animals
Language:
En
Journal:
Ultrasonics
Year:
2018
Document type:
Article
Affiliation country:
Brazil
Country of publication:
Netherlands