0000000000480530

AUTHOR

Sergio Bea

showing 3 related works from this author

Increased Hospital Stay and Allograft Disfunction in Renal Transplant Recipients with Cyp2c19 AA Variant in SNP rs4244285

2012

Pharmacogenetics correlates certain genetic variants, such as single nucleotide polymorphisms (SNPs), with blood drug levels, efficacy, and adverse effects of the treatment. Tacrolimus is mainly metabolized via CYP3A4/5, whereas CYP2C19 and CYP3A4/5 are responsible for omeprazole metabolism. Omeprazole inhibits tacrolimus metabolism via CYP3A5 in patients carrying variant alleles of CYP2C19, increasing tacrolimus blood concentrations. Seventy-five renal transplant recipients treated with tacrolimus and concomitant omeprazole were genotyped in a panel of 37 SNPs with use of Sequenom MassArray. The patients with CYP2C19*2/*2 genotype (n = 4) showed a median posttransplantation hospital stay o…

Pharmacologymedicine.medical_specialtybusiness.industryPharmaceutical ScienceCYP2C19Pharmacologymedicine.diseaseGastroenterologyTacrolimusTransplantationsurgical procedures operativeBlood drugInternal medicinemedicineAdverse effectbusinessOmeprazolePharmacogeneticsAcute tubular necrosismedicine.drugDrug Metabolism and Disposition
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Genotype and Allele Frequencies of Drug-Metabolizing Enzymes and Drug Transporter Genes Affecting Immunosuppressants in the Spanish White Population

2013

Interpatient variability in drug response can be widely explained by genetically determined differences in metabolizing enzymes, drug transporters, and drug targets, leading to different pharmacokinetic and/or pharmacodynamic behaviors of drugs. Genetic variations affect or do not affect drug responses depending on their influence on protein activity and the relevance of such proteins in the pathway of the drug. Also, the frequency of such genetic variations differs among populations, so the clinical relevance of a specific variation is not the same in all of them. In this study, a panel of 33 single nucleotide polymorphisms in 14 different genes (ABCB1, ABCC2, ABCG2, CYP2B6, CYP2C19, CYP2C…

GenotypeCYP2B6Nod2 Signaling Adaptor ProteinOrganic Anion TransportersSingle-nucleotide polymorphismCYP2C19PharmacologyPolymorphism Single NucleotideWhite PeopleCytochrome P-450 Enzyme SystemGene FrequencyGenetic variationGenotypeHumansPharmacology (medical)ATP Binding Cassette Transporter Subfamily B Member 1GlucuronosyltransferaseAllele frequencyCYP2C9Methylenetetrahydrofolate Reductase (NADPH2)PharmacologyGeneticsbiologyMethyltransferasesMultidrug Resistance-Associated Protein 2Tissue DonorsTransplant RecipientsSpainInactivation MetabolicUDP-Glucuronosyltransferase 1A9biology.proteinSLCO1B1Immunosuppressive AgentsTherapeutic Drug Monitoring
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Effect of CYP3A5*3 on kidney transplant recipients treated with tacrolimus: a systematic review and meta-analysis of observational studies

2014

The highly variable pharmacokinetics of tacrolimus can hamper the optimal management of kidney transplant patients. This variability has been attributed to the genetic polymorphism of CYP3A5 6986A>G, but the evidence is not clear. We conducted a meta-analysis of studies evaluating the effect of CYP3A5 polymorphism on kidney transplant recipients with tacrolimus plasma concentration divided by daily dose per body weight (C/D) and clinical outcomes. We searched in MEDLINE and EMBASE. We found evidence suggesting a significantly lower C/D among CYP3A5*1 allele carriers compared with carriers of the CYP3A5*3/*3 genotype at weeks 1 and 2, and months 1, 3, 6 and 12. We demonstrated that the expre…

Graft Rejectionmedicine.medical_specialtyPharmacologyGastroenterologyKidney transplantTacrolimusPharmacokineticsInternal medicineGenotypeGeneticsmedicineCytochrome P-450 CYP3AHumansAlleleCYP3A5Pharmacologybusiness.industryKidney TransplantationTransplant RecipientsTacrolimusObservational Studies as Topicsurgical procedures operativeMeta-analysisMolecular MedicineObservational studybusinessImmunosuppressive Agents
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