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- W2006847669 abstract "Skeletal tissues of mice with an inactivated allele of the Col2a1 gene for Type II collagen (heterozygous knockout) were studied.To determine whether a heterozygous inactivation of the Col2a1 gene has a role in the etiology of spine disorders such as disc degeneration.Mutations in the COL2A1, COL11A1, COL11A2, and COL9A2 genes have been linked to spine disorders. However, the mechanism by which genetic factors lead to disc degeneration still are largely unknown.Spine tissues were studied using radiograph analyses; conventional, quantitative, and polarized light microscopy; immunohistochemistry for the major extracellular components, and in situ hybridization for procollagens alpha1(I) and alpha1(II). Voluntary running activity also was monitored in half of the mice.As the findings showed, 1-month-old heterozygous knockout mice had shorter limb bones, skulls, and spines, as well as thicker and more irregular vertebral endplates, which calcified earlier than in the control mice. They also had a lower concentration of glycosaminoglycans in the anulus fibrosus, in the endplates, and in the vertebral bone than the controls. These features in the heterozygous knockout mice were compensated by the age of 15 months. However, the long bones and skulls of the mature heterozygous mice remained shorter than those of the controls. Gene-deficient mice used the running wheel less. However, physical exercise did not induce any marked structural changes in the skeleton.Mice with heterozygous knockout of Col2a1 show subtle early skeletal manifestations that bear some resemblance to those of human spine disorders." @default.
- W2006847669 created "2016-06-24" @default.
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- W2006847669 date "2001-12-01" @default.
- W2006847669 modified "2023-10-01" @default.
- W2006847669 title "Premature Vertebral Endplate Ossification and Mild Disc Degeneration in Mice After Inactivation of One Allele Belonging to the Col2a1 Gene for Type II Collagen" @default.
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- W2006847669 doi "https://doi.org/10.1097/00007632-200112010-00008" @default.
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