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Träfflista för sökning "WFRF:(PETTERSSON G) srt2:(1985-1989)"

Sökning: WFRF:(PETTERSSON G) > (1985-1989)

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1.
  • Goonewardena, P, et al. (författare)
  • Analysis of fragile X-mental retardation families using flanking polymorphic DNA probes.
  • 1986
  • Ingår i: Clinical Genetics. - 0009-9163 .- 1399-0004. ; 30:4, s. 249-54
  • Tidskriftsartikel (refereegranskat)abstract
    • Fragile-X mental retardation (FRAX-MR) is one of the more common X-linked disorders affecting 1 in 1,500 newborn males. This disease is characterized by the expression of fragile site in the region q27.3 of the X-chromosome of affected boys when their lymphocytes are cultured in folate deficient medium. In most patients there is macroorchidism postpubertally. The clinical diagnosis of carrier females based on the expression of fragile site in Xq27.3 is usually difficult and sometimes impossible. About half of the carrier females escape diagnosis by this method. Furthermore, prenatal diagnosis is not always feasible. Using Restriction Fragment Length Polymorphism (RFLP) and cloned DNA segments from the region Xq27-Xqter as probes, we have investigated Swedish families with FRAX-MR in three generations. Interesting observations, previously unreported to our knowledge, have been made in some patients and carrier mothers, using one of the probes which is localized to the distal end of Xq. The significance of these findings and the linkage of the disease locus to the different probes used in this study is presented.
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