Literature DB >> 365154

Effects of changes in Mg++ ion concentration upon bacterial inhibition by beta-2-thienylalanine in defined media.

K J Brown, D R Lines.   

Abstract

Variation in the inhibition of growth of Escherichia coli and Shigella sp. in various media containing beta-2-thienylalanine was attributed to differences in concentrations of Mg++ ions. Random blood samples 112 infants were tested for elevated phenylalanine in the phenylketonuria (PKU) screening assay. Magnesium ion levels also affected the results of this assay. At 0.05 g/1 MgSO4, the concentration present in commerical PKU test agar, four false positives were detected, while no readings could be made due to overgrowth of the Bacillus subtilis test strain when the concentration was increased to 0.1 g/1.

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Year:  1978        PMID： 365154     DOI： 10.1038/icb.1978.57

Source DB:  PubMed          Journal:  Aust J Exp Biol Med Sci        ISSN： 0004-945X


  3 in total

1.  Effects of increasing Mg++ ion concentration on the PKU monitoring assay.

Authors:  K J Brown; R B Elliott; D R Lines
Journal:  Experientia       Date:  1979-04-15

2.  Colonization by Salmonella typhimurium and Shigella flexneri III of the gastrointestinal tract of mice treated with beta-2-thienylalanine and streptomycin.

Authors:  K J Brown; G W Tannock; R A Eyres; R B Elliott; D R Lines
Journal:  Antonie Van Leeuwenhoek       Date:  1979       Impact factor: 2.271

3.  The assay on a defined medium of the effects of beta-2-thienylalanine on the growth of anaerobic bacterial isolates from phenylketonuric patients.

Authors:  K J Brown; B V Vesey; G W Tannock; E B Bell; D R Lines; R B Elliott
Journal:  Med Microbiol Immunol       Date:  1980-02       Impact factor: 3.402
  3 in total

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