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  Multiple roles for neurofibromin in skeletal development and growth.

Kolanczyk, M., Kossler, N., Kühnisch, J., Lavitas, L., Stricker, S., Wilkening, U., et al. (2007). Multiple roles for neurofibromin in skeletal development and growth. Human Molecular Genetics, 16(8), 232-240. doi:10.1093/hmg/ddm032.

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Genre: Zeitschriftenartikel
Alternativer Titel : Hum Mol Genet.

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Kolanczyk, Mateusz1, Autor           
Kossler, Nadine1, Autor           
Kühnisch, Jirko, Autor
Lavitas, Liron2, Autor
Stricker, Sigmar1, Autor           
Wilkening, Ulrich2, Autor
Manjubala, Inderchand2, Autor
Fratzl, Peter2, Autor
Spörle, Ralf1, Autor           
Herrmann, Bernhard G.3, Autor           
Parada, Luis F., Autor
Kornak, Uwe1, Autor           
Mundlos, Stefan1, Autor           
Affiliations:
1Research Group Development & Disease (Head: Stefan Mundlos), Max Planck Institute for Molecular Genetics, Max Planck Society, ou_1433557              
2Max Planck Society, ou_persistent13              
3Dept. of Developmental Genetics (Head: Bernhard G. Herrmann), Max Planck Institute for Molecular Genetics, Max Planck Society, ou_1433548              

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 Zusammenfassung: Neurofibromatosis type 1 (NF1) is a prevalent genetic disorder primarily characterized by the formation of neurofibromas, café-au-lait spots and freckling. Skeletal abnormalities such as short stature or bowing/pseudarthrosis of the tibia are relatively common. To investigate the role of the neurofibromin in skeletal development, we crossed Nf1flox mice with Prx1Cre mice to inactivate Nf1 in undifferentiated mesenchymal cells of the developing limbs. Similar to NF1 affected individuals, Nf1Prx1 mice show bowing of the tibia and diminished growth. Tibial bowing is caused by decreased stability of the cortical bone due to a high degree of porosity, decreased stiffness and reduction in the mineral content as well as hyperosteoidosis. Accordingly, osteoblasts show an increase in proliferation and a decreased ability to differentiate and mineralize in vitro. The reduction in growth is due to lower proliferation rates and a differentiation defect of chondrocytes. Abnormal vascularization of skeletal tissues is likely to contribute to this pathology as it exerts a negative effect on cortical bone stability. Furthermore, Nf1 has an important role in the development of joints, as shown by fusion of the hip joints and other joint abnormalities, which are not observed in neurofibromatosis type I. Thus, neurofibromin has multiple essential roles in skeletal development and growth.

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Sprache(n): eng - English
 Datum: 2007-02-22
 Publikationsstatus: Erschienen
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 Identifikatoren: eDoc: 334872
DOI: 10.1093/hmg/ddm032
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Titel: Human Molecular Genetics
  Alternativer Titel : Hum Mol Genet.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 16 (8) Artikelnummer: - Start- / Endseite: 232 - 240 Identifikator: ISSN: 0964-6906