Mouse Genome Informatics
tg
    Tg(Col2a1-PTHR1*H223R)AHju/0
involves: C57BL/6
Key:
phenotype observed in females WTSI Wellcome Trust Sanger Institute
phenotype observed in males EuPh Europhenome
N normal phenotype
       

Histological sternum sections of wild-type, and mice hemizygous and homozygous for Tg(Col2a1-PTHR1*H223R)AHju

skeleton
• decrease in the number of hypertrophic chondrocytes
• ossification centers of vertebrae are reduced in size, however less pronounced than in homozygous transgenic mice
• metaphyseal chondrodysplasia
• at birth, show reduced or absent mineralization of many elements that develop by endochondral bone formation such as the supraoccipital bone, sternum, ischium and pubic bone, however, less pronounced than in homozygous transgenic mice
• impaired endochondral ossification, with extended growth plate length and absence of a clear secondary ossification center
• sternebrae of newborns have no blood vessel invasion and the middle part of tibiae are still occupied by cartilage at E17.5, however less pronounced than in homozygous transgenic mice
• delay in chondrocyte differentiation
• decease in chondrocyte apoptosis

Mouse Models of Human Disease
OMIM IDRef(s)
Metaphyseal Chondrodysplasia, Jansen Type 156400 J:175572