Stimulation of bone formation in vivo by insulin-like growth factor-II in rats.
Insulin-like growth factor-II (IGF-II) plays an important role in skeletal remodeling, however, little is known about its effect on bone formation in vivo. In our study of the stimulation of bone formation in vivo by IGF II we injected recombinant human IGF-II into the parietal bones of neonatal rats once a day for 12 days. The bone mineral density measured by dual energy X-ray absorptiometry and the thickness of IGF-II-injected parietal bones increased in a dose-dependent manner. The layers of osteoblasts were observed along the IGF-II-injected side.
Ishibe
M
M
Department of Orthopaedic Surgery, NTT Sapporo Hospital, Sapporo, Japan.
Ishibashi
T
T
Kaneda
K
K
Koda
T
T
Rosier
R N
RN
Puzas
J E
JE
D000818:Animals; D000831:Animals, Newborn; D015519:Bone Density / Q000187:drug effects; D001846:Bone Development / Q000187:drug effects*; D006801:Humans; D007335:Insulin-Like Growth Factor II / Q000008:administration & dosage*; D008845:Microinjections; D010294:Parietal Bone / Q000166:cytology / Q000187:drug effects / Q000254:growth & development; D051381:Rats; D011994:Recombinant Proteins / Q000008:administration & dosage
D011994:Recombinant Proteins; D007335:Insulin-Like Growth Factor II