Expression of Senescence-related Proteins in Rat Fracture Callus / 대한정형외과학회잡지
The Journal of the Korean Orthopaedic Association
;
: 479-484, 2001.
Article
in Korean
| WPRIM
| ID: wpr-646400
ABSTRACT
PURPOSE:
To evaluate the expression of senescence-related proteins according to the aging process and to determine the role of senescence-related proteins in the bone tissue and their effects on the process of bone union. MATERIALS ANDMETHODS:
18 Sprague-Dawley rats (8 weeks old 7, 32 weeks old 6, and 70 weeks old 5) were used in the experiment. A unilateral closed femur fracture was made, and the fracture callus was obtained 2 weeks after the fracture. The ossification process was observed in proliferative chondrocytes, the hypertrophic chondrocytes, and in the mesenchymal layer individually by immunohistochemistry, using p16, p21, c-fos and c-jun antibodies.RESULTS:
There was no significant differences in the manifestation of p-16, p-21, c-fos, c-jun gene according to the age. The positive ratio of p-16 was maximal in proliferative chondrocytes (54.93%) and decreased in the mesenchymal layer (46.48%), and in hypertrophic chondrocytes (10.85%), in order. The positive ratio of c-fos was maximal in proliferative chondrocytes (73.32%) and decreased in the mesenchymal layer (51.84%), and in hypertrophic chondrocytes (9.64%), in order.CONCLUSION:
We believe that senescent genes in the bone tissue participate in the differentiation of osteochondral cells and in the process of fracture callus ossification.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Bone and Bones
/
Bony Callus
/
Aging
/
Immunohistochemistry
/
Genes, jun
/
Rats, Sprague-Dawley
/
Chondrocytes
/
Femur
/
Antibodies
Limits:
Animals
Language:
Korean
Journal:
The Journal of the Korean Orthopaedic Association
Year:
2001
Type:
Article
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