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Träfflista för sökning "L773:1059 7794 srt2:(2000-2004)"

Search: L773:1059 7794 > (2000-2004)

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  • Bjursell, Cecilia, 1971, et al. (author)
  • PMM2 mutation spectrum, including 10 novel mutations, in a large CDG type 1A family material with a focus on Scandinavian families.
  • 2000
  • In: Human mutation. - 1098-1004 .- 1059-7794. ; 16:5, s. 395-400
  • Journal article (peer-reviewed)abstract
    • Carbohydrate-deficient glycoprotein syndrome type IA (CDG IA) is an autosomal recessive disease characterized clinically by severe involvement of the central and peripheral nervous system, and biochemically by complex defects in carbohydrate residues in a number of serum glycoproteins. CDG IA is caused by mutations in the PMM2 gene located in chromosome region 16p13. In this study, 61 CDG type IA patients (122 chromosomes) were screened for mutations in the PMM2 gene using a combination of SSCP and sequence analysis. More than 95% of the mutations could be detected. All of them were missense mutations. Mutations 422G>A and 357C>A were strikingly more common in the material and comprised 58% of mutations detected. Of the 20 mutations found, 10 were not reported previously. Seven mutations, e.g. 26G>A (five alleles) and 548T>C (seven alleles), were found only in Scandinavian families. The most common genotype was 357C>A/422G>A (36%). Three patients were homozygous, 357C>A/357C>A (two cases), and 548T>C/548T>C (one case). No patients homozygous for the most common mutation 422G>A were detected. The different mutations were clustered e.g., in that most were located in exon 5 (five) and exon 8 (six), while no mutation was detected in exon 2. When the frequencies of each mutation were included, exon 5 comprised 61% (65 chromosomes) of the mutations; in Scandinavian patients the frequency of these mutations was 72%. Thus, analysis of exon five in these patients enables both reliable and time-saving first screening in prenatal diagnostic cases. This could be followed by a second step of additional strategies for the detection of other mutations.
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  • Grahn, Ammi, 1961, et al. (author)
  • Determination of Lewis FUT3 gene mutations by PCR using sequence-specific primers enables efficient genotyping of clinical samples.
  • 2001
  • In: Human mutation. - : Hindawi Limited. - 1098-1004 .- 1059-7794. ; 18:4, s. 358-9
  • Journal article (peer-reviewed)abstract
    • We have developed a polymerase chain reaction method using sequence-specific primers (PCR-SSP) for rapid and correct genotyping of the common Lewis (FUT3) gene mutations 59T>G, 202T>C, 314C>T, 508G>A, and 1067T>A. The PCR-SSP method was validated on 20 healthy blood donors and 16 non-insulin-dependent diabetic patients. All individuals were in parallel genotyped by our established polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis. The FUT3 genotypes, determined with the PCR-SSP method, were in complete accordance with the results of the PCR-RFLP reference method. The PCR-SSP method could also be adapted to assign the presence of a specific mutation to the respective FUT3 alleles. We found the method to be reliable, rapid and cheap with no requirements for restriction enzyme processing.
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