RGD Reference Report - Expression of bone morphogenic proteins and receptors at the injured growth plate cartilage in young rats. - Rat Genome Database

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Expression of bone morphogenic proteins and receptors at the injured growth plate cartilage in young rats.

Authors: Ngo, TQ  Scherer, MA  Zhou, FH  Foster, BK  Xian, CJ 
Citation: Ngo TQ, etal., J Histochem Cytochem. 2006 Aug;54(8):945-54. Epub 2006 May 1.
RGD ID: 2289037
Pubmed: PMID:16651391   (View Abstract at PubMed)
DOI: DOI:10.1369/jhc.6A6939.2006   (Journal Full-text)

The injured growth plate cartilage is often repaired by bony tissue, resulting in impaired bone growth in children. Bone morphogenic proteins (BMPs) are important for bone fracture repair, and as a step to characterize potential involvement of BMPs in bony repair of injured growth plate, expression of BMPs and receptors (BMP-R) was examined by quantitative RT-PCR and immunohistochemistry in rat injured tibial growth plate. During the inflammatory response on day 1, slightly increased expression of BMP-3, BMP-4, BMP-R1a, and BMP-R2 was observed, with immunostaining seen among inflammatory cells at the injury site. During mesenchymal infiltration and osteogenic responses on days 3-14, moderately increased expression of BMP-2, -3, -4, -7, and BMP-R1a was found, with immunostaining observed among infiltrated mesenchymal cells and differentiated osteoblasts lining bony trabeculae. During maturation phase on days 14-25, only BMP-7 was seen upregulated slightly and was localized in osteoblasts and marrow cells at the injury site. The temporospatial expression of BMPs and receptors at the injured growth plate suggests potential involvement of BMP-3 and -4 in regulating the inflammatory response or as its mediators in modulating downstream events, and BMP-2, -3, -4, and -7 in the fibrogenic and osteogenic responses, and BMP-7 in bone remodeling at the injured growth plate.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Tibial Fractures  ISOBmp2 (Rattus norvegicus)2289037; 2289037protein:increased expression:tibiaRGD 
Tibial Fractures  ISOBmp3 (Rattus norvegicus)2289037; 2289037protein:increased expression:tibiaRGD 
Tibial Fractures  ISOBmp4 (Rattus norvegicus)2289037; 2289037protein:increased expression:tibiaRGD 
Tibial Fractures  ISOBmp7 (Rattus norvegicus)2289037; 2289037protein:increased expression:tibiaRGD 
Tibial Fractures  IEP 2289037; 2289037; 2289037; 2289037protein:increased expression:tibiaRGD 

Objects Annotated

Genes (Rattus norvegicus)
Bmp2  (bone morphogenetic protein 2)
Bmp3  (bone morphogenetic protein 3)
Bmp4  (bone morphogenetic protein 4)
Bmp7  (bone morphogenetic protein 7)

Genes (Mus musculus)
Bmp2  (bone morphogenetic protein 2)
Bmp3  (bone morphogenetic protein 3)
Bmp4  (bone morphogenetic protein 4)
Bmp7  (bone morphogenetic protein 7)

Genes (Homo sapiens)
BMP2  (bone morphogenetic protein 2)
BMP3  (bone morphogenetic protein 3)
BMP4  (bone morphogenetic protein 4)
BMP7  (bone morphogenetic protein 7)


Additional Information