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- Danese, E., et al.
(författare)
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Impact of the CYP4F2 p.V433M Polymorphism on Coumarin Dose Requirement: Systematic Review and Meta-Analysis
- 2012
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Ingår i: Clinical Pharmacology and Therapeutics. - : Springer Science and Business Media LLC. - 1532-6535 .- 0009-9236. ; 92:6, s. 746-756
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Forskningsöversikt (refereegranskat)abstract
- A systematic review and a meta-analysis were performed to quantify the accumulated information from genetic association studies investigating the impact of the CYP4F2 rs2108622 (p.V433M) polymorphism on coumarin dose requirement. An additional aim was to explore the contribution of the CYP4F2 variant in comparison with, as well as after stratification for, the VKORC1 and CYP2C9 variants. Thirty studies involving 9,470 participants met prespecified inclusion criteria. As compared with CC-homozygotes, T-allele carriers required an 8.3% (95% confidence interval (CI): 5.6-11.1%; P < 0.0001) higher mean daily coumarin dose than CC homozygotes to reach a stable international normalized ratio (INR). There was no evidence of publication bias. Heterogeneity among studies was present (I-2 = 43%). Our results show that the CYP4F2 p.V433M polymorphism is associated with interindividual variability in response to coumarin drugs, but with a low effect size that is confirmed to be lower than those contributed by VKORC1 and CYP2C9 polymorphisms.
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| 3. |
- Barregård, Lars, 1948, et al.
(författare)
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Human and Methodological Sources of Variability in the Measurement of Urinary 8-Oxo-7,8-dihydro-2 '-deoxyguanosine
- 2013
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Ingår i: Antioxidants and Redox Signaling. - : Mary Ann Liebert Inc. - 1523-0864 .- 1557-7716. ; 18:18, s. 2377-2391
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Tidskriftsartikel (refereegranskat)abstract
- Aims: Urinary 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) is a widely used biomarker of oxidative stress. However, variability between chromatographic and ELISA methods hampers interpretation of data, and this variability may increase should urine composition differ between individuals, leading to assay interference. Furthermore, optimal urine sampling conditions are not well defined. We performed inter-laboratory comparisons of 8-oxodG measurement between mass spectrometric-, electrochemical- and ELISA-based methods, using common within-technique calibrants to analyze 8-oxodG-spiked phosphate-buffered saline and urine samples. We also investigated human subject- and sample collection-related variables, as potential sources of variability. Results: Chromatographic assays showed high agreement across urines from different subjects, whereas ELISAs showed far more inter-laboratory variation and generally overestimated levels, compared to the chromatographic assays. Excretion rates in timed 'spot' samples showed strong correlations with 24 h excretion (the 'gold' standard) of urinary 8-oxodG (r(p) 0.67-0.90), although the associations were weaker for 8-oxodG adjusted for creatinine or specific gravity (SG). The within-individual excretion of 8-oxodG varied only moderately between days (CV 17% for 24 h excretion and 20% for first void, creatinine-corrected samples). Innovation: This is the first comprehensive study of both human and methodological factors influencing 8-oxodG measurement, providing key information for future studies with this important biomarker. Conclusion: ELISA variability is greater than chromatographic assay variability, and cannot determine absolute levels of 8-oxodG. Use of standardized calibrants greatly improves intra-technique agreement and, for the chromatographic assays, importantly allows integration of results for pooled analyses. If 24 h samples are not feasible, creatinine- or SG-adjusted first morning samples are recommended.
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| 4. |
- Fujita, Kenji, et al.
(författare)
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Pharmaceutical Care Network Europe definition of quality indicators for pharmaceutical care : a systematic literature review and international consensus development.
- 2024
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Ingår i: International Journal of Clinical Pharmacy. - : Springer. - 2210-7703 .- 2210-7711. ; 46:1, s. 70-79
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Forskningsöversikt (refereegranskat)abstract
- BACKGROUND: Over the past 40 years, the tasks of pharmacists have shifted from logistic services to pharmaceutical care (PhC). Despite the increasing importance of measuring quality of care, there is no general definition of Quality Indicators (QIs) to measure PhC. Recognising this, a working group in a European association of PhC researchers, the Pharmaceutical Care Network Europe (PCNE), was established in 2020.AIM: This research aimed to review existing definitions of QIs and develop a definition of QIs for PhC.METHOD: A two-step procedure was applied. Firstly, a systematic literature review was conducted to identify existing QI definitions that were summarised. Secondly, an expert panel, comprised of 17 international experts from 14 countries, participated in two surveys and a discussion using a modified Delphi technique to develop the definition of QIs for PhC.RESULTS: A total of 182 QI definitions were identified from 174 articles. Of these, 63 QI definitions (35%) cited one of five references as the source. Sixteen aspects that construct QI definitions were derived from the identified definitions. As a result of the Delphi study, the panel reached an agreement on a one-sentence definition of QIs for PhC: "quality indicators for pharmaceutical care are validated measurement tools to monitor structures, processes or outcomes in the context of care provided by pharmacists".CONCLUSION: Building upon existing definition of QIs, an international expert panel developed the PCNE definition of QIs for PhC. This definition is intended for universal use amongst researchers and healthcare providers in PhC.
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