Literature DB >> 8431963

Mass spectrometric investigation of the presence of 7-methyl ring-opened guanine derivatives in urine.

R Barak1, A Vincze, P Bel, S P Dutta, G B Chedda.   

Abstract

The involvement of chemical alkylating agents in tumorigenesis and chemotherapy is well established and it was shown that one of the main sites of alkylation is the N-7 of guanine in DNA. Though excision of damaged bases is regarded as one of the repair mechanisms in damaged DNA there is a scarcity of information concerning the excised final metabolites in body fluids. This study attempts to demonstrate the usefulness of CAD MS/MS for the detection of the final metabolite-deformylated ring-opened 7 alkylguanine in urine. Such mass spectrometric methods can be used in biomedical studies.

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Year:  1993        PMID: 8431963     DOI: 10.1016/0009-2797(93)90109-c

Source DB:  PubMed          Journal:  Chem Biol Interact        ISSN: 0009-2797            Impact factor:   5.192


  3 in total

1.  Replication of the 2,6-diamino-4-hydroxy-N(5)-(methyl)-formamidopyrimidine (MeFapy-dGuo) adduct by eukaryotic DNA polymerases.

Authors:  Plamen P Christov; Kinrin Yamanaka; Jeong-Yun Choi; Kei-ichi Takata; Richard D Wood; F Peter Guengerich; R Stephen Lloyd; Carmelo J Rizzo
Journal:  Chem Res Toxicol       Date:  2012-07-06       Impact factor: 3.739

2.  A novel method for detecting 7-methyl guanine reveals aberrant methylation levels in Huntington disease.

Authors:  Beena Thomas; Samantha Matson; Vanita Chopra; Liping Sun; Swati Sharma; Steven Hersch; H Diana Rosas; Clemens Scherzer; Robert Ferrante; Wayne Matson
Journal:  Anal Biochem       Date:  2013-02-12       Impact factor: 3.365

3.  Structural Basis for Error-Free Bypass of the 5-N-Methylformamidopyrimidine-dG Lesion by Human DNA Polymerase η and Sulfolobus solfataricus P2 Polymerase IV.

Authors:  Amritraj Patra; Surajit Banerjee; Tracy L Johnson Salyard; Chanchal K Malik; Plamen P Christov; Carmelo J Rizzo; Michael P Stone; Martin Egli
Journal:  J Am Chem Soc       Date:  2015-05-27       Impact factor: 15.419

  3 in total

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