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Background

As acetylsalicylic acid is metabolized by UDP-glucuronosyltransferase 1A6 (UGT1A6) and cytochrome P450 2C9 (CYP2C9), interindividual differences in activity of these enzymes may modulate the effects and side-effects of acetylsalicylic acid. The objective of this study was to assess whether polymorphisms in UGT1A6 and CYP2C9 genes are related to the prevalence of upper gastrointestinal symptoms in cardiovascular patients using acetylsalicylic acid for secondary prevention of ischaemic heart disease.

Methods

Blood samples were taken from acetylsalicylic acid using patients admitted to the Coronary Care Unit. Dyspepsia-related health was evaluated at week 2, using a validated upper gastrointestinal complaint questionnaire. A subset of 160 patients responded to a survey and were eligible to participate in this study. DNA was isolated and UGT1A6 and CYP2C9 genotypes were determined using polymerase chain reaction restricted fragment length polymorphism techniques.

Results

Seventy per cent of the patients returned the questionnaire. UGT1A6 and CYP2C9 variant polymorphisms were found in 103 (63%) and 56 (35%) patients, respectively. There was no association between gastrointestinal symptoms and UGT1A6 (OR = 0.80, 95% CI = 0.41-1.56) or CYP2C9 polymorphisms (OR = 0.85, 95% CI = 0.44-1.67).

Conclusions

There was no association between polymorphisms in genes encoding for acetylsalicylic acid metabolizing enzymes on the prevalence of gastric complaints in cardiovascular patients on acetylsalicylic acid."xsd:string
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http://purl.uniprot.org/citations/16305586http://purl.uniprot.org/core/author"Drenth J.P."xsd:string
http://purl.uniprot.org/citations/16305586http://purl.uniprot.org/core/author"Peters W.H."xsd:string
http://purl.uniprot.org/citations/16305586http://purl.uniprot.org/core/author"Jansen J.B."xsd:string
http://purl.uniprot.org/citations/16305586http://purl.uniprot.org/core/author"Laheij R.J."xsd:string
http://purl.uniprot.org/citations/16305586http://purl.uniprot.org/core/author"Huybers S."xsd:string
http://purl.uniprot.org/citations/16305586http://purl.uniprot.org/core/author"Verheugt F.W."xsd:string
http://purl.uniprot.org/citations/16305586http://purl.uniprot.org/core/author"van Oijen M.G."xsd:string
http://purl.uniprot.org/citations/16305586http://purl.uniprot.org/core/date"2005"xsd:gYear
http://purl.uniprot.org/citations/16305586http://purl.uniprot.org/core/name"Br J Clin Pharmacol"xsd:string
http://purl.uniprot.org/citations/16305586http://purl.uniprot.org/core/pages"623-628"xsd:string
http://purl.uniprot.org/citations/16305586http://purl.uniprot.org/core/title"Polymorphisms in genes encoding acetylsalicylic acid metabolizing enzymes are unrelated to upper gastrointestinal health in cardiovascular patients on acetylsalicylic acid."xsd:string
http://purl.uniprot.org/citations/16305586http://purl.uniprot.org/core/volume"60"xsd:string
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