Different effects of Wnt/ß-catenin activation and PTH activation in adult and aged male mice metaphyseal fracture healing.
BMC Musculoskelet Disord
; 21(1): 110, 2020 Feb 19.
Article
em En
| MEDLINE
| ID: mdl-32075627
ABSTRACT
BACKGROUND:
Fractures in older men are not uncommon and need to be healed as soon as possible to avoid related complications. Anti-osteoporotic drugs targeting Wnt/ß-catenin and PTH (parathyroid hormone) to promote fracture healing have become an important direction in recent years. The study is to observe whether there is a difference in adult and aged situations by activating two signal paths.METHODS:
A single cortical hole with a diameter of 0.6 mm was made in the femoral metaphysis of Catnblox(ex3) mice and wild-type mice. The fracture healing effects of CA (Wnt/ß-catenin activation) and PTH (activated by PTH (1-34) injections) were assessed by X-ray and CT imaging on days 7, 14, and 21 after fracture. The mRNA levels of ß-catenin, PTH1R(Parathyroid hormone 1 receptor), and RUNX2(Runt-related transcription factor 2) in the fracture defect area were detected using RT-PCR. Angiogenesis and osteoblasts were observed by immunohistochemistry and osteoclasts were observed by TRAP (Tartrate-resistant Acid Phosphatase).RESULT:
Adult CA mice and adult PTH mice showed slightly better fracture healing than adult wild-type (WT) mice, but there was no statistical difference. Aged CA mice showed better promotion of angiogenesis and osteoblasts and better fracture healing than aged PTH mice.CONCLUSION:
The application of Wnt/ß-catenin signaling pathway drugs for fracture healing in elderly patients may bring better early effects than PTH signaling pathway drugs, but the long-term effects need to be observed.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Hormônio Paratireóideo
/
Consolidação da Fratura
/
Fraturas do Fêmur
/
Via de Sinalização Wnt
Limite:
Animals
Idioma:
En
Revista:
BMC Musculoskelet Disord
Assunto da revista:
FISIOLOGIA
/
ORTOPEDIA
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
China