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[Regulation of PTHrP in proliferation and differentiation of chondrocytes of condyle in fetal mouse]. | LitMetric

[Regulation of PTHrP in proliferation and differentiation of chondrocytes of condyle in fetal mouse].

Hua Xi Kou Qiang Yi Xue Za Zhi

Dept. of Oral Anatomy and Physiology, College of Stomatology, Nanjing Medical Science University, Nanjing 210029, China.

Published: June 2006

AI Article Synopsis

Article Abstract

Objective: To investigate the regulatory mechanism of parathyroid hormone-related protein (PTHrP) in proliferation and differentiation of chondrocytes of condyle in fetal mouse.

Methods: Chondrocytes of condyle in fetal mouse were separated and cultured in vitro, the influence of PTHrP on proliferation and differentiation was observed.

Results: After two weeks' culture in 0.01 nmol/L, 0.1 nmol/L, 1 nmol/L, 10 nmol/L human PTHrP, there was significant difference in the number of cartilage nodule formed between experiment group and control group (P<0.05), and there was no significant difference in 0.01 nmol/L group (P>0.05). Alkaline phosphatase (ALP) activity was significantly intensified in experiment group and control group (P<0.05). Meanwhile, it was found that this function of promotion was lessened after anti-PTHR antibody used.

Conclusion: It can be seen that PTHrP, via its receptor, can promote proliferation and differentiation of chondrocytes of condyle, which resemble its modulation mechanism in epiphyseal growth plate cartilage intramembrane in mandibule.

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