Overexpression of the human interleukin 1a gene causes osteopenia in mice.
J Rheumatol
; 32(2): 320-4, 2005 Feb.
Article
en En
| MEDLINE
| ID: mdl-15693094
ABSTRACT
OBJECTIVE:
Osteoporosis is a major complication of chronic inflammatory diseases such as rheumatoid arthritis (RA). We describe disordered bone metabolism in transgenic mice that overexpress human interleukin 1a (hIL-1a).METHODS:
Bone mineral density (BMD), microcomputed tomography (microCT), histomorphometry, and blood biochemical data of hIL-1a transgenic mice and littermate wild-type mice were examined.RESULTS:
The femoral BMD of transgenic mice was decreased by 27.7% compared with wild-type mice. microCT revealed a marked reduction in the trabecular bone, and cortical thinning with an enlarged cavity was observed in femora of transgenic mice. Histomorphometric analysis revealed inhibition of several measures of bone formation, while the serum alkaline phosphatase level was reduced in transgenic mice; however, their indices of bone resorption were not elevated.CONCLUSION:
Overexpression of hIL-1a causes osteopenia in mice. It was suggested that the systemic osteopenia in these transgenic mice occurred primarily as a result of decreased bone formation, with a reduction of bone mineralization rather than increased osteoclastic bone resorption. This may be one aspect of bone metabolism in RA that results in disease complications.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Artritis Reumatoide
/
Enfermedades Óseas Metabólicas
/
Interleucina-1
/
Predisposición Genética a la Enfermedad
Tipo de estudio:
Etiology_studies
/
Prognostic_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
J Rheumatol
Año:
2005
Tipo del documento:
Article
País de afiliación:
Japón