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Landolt HP. [Self-rated Caffeine Sensitivity: Implications for Personalized Sleep Medicine?]. Praxis (Bern 1994) 2016; 105:563-568. [PMID: 27167478 DOI: 10.1024/1661-8157/a002352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The prevalence of the insomnia syndrome and the effects of caffeine on sleep are in part genetically determined. Pharmacogenetic studies in humans demonstrate that functional polymorphisms of the genes encoding adenosine A2A receptors and dopamine transporters contribute to individual differences in impaired sleep quality by caffeine. The A2A receptor and dopamine transporter are preferentially expressed in the striatum. Together, these observations suggest that the striatum plays an important role in sleep-wake regulation. Individual caffeine sensitivity and A2A receptor genotype should be taken into account in the development of possible novel adenosine-based pharmacotherapies of sleep-wake disorders and neurodegenerative disorders such as Parkinson's disease. This may permit the prediction of individual drug effects and improve the reliability of clinical trials.
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Affiliation(s)
- Hans Peter Landolt
- 1 Institut für Pharmakologie und Toxikologie, Universität Zürich
- 2 Klinischer Forschungsschwerpunkt Sleep & Health, Universität Zürich
- 3 Zürcher Zentrum für interdisziplinäre Schlafforschung (ZiS), Universität Zürich
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Fromonot J, Deharo P, Bruzzese L, Cuisset T, Quilici J, Bonatti S, Fenouillet E, Mottola G, Ruf J, Guieu R. Adenosine plasma level correlates with homocysteine and uric acid concentrations in patients with coronary artery disease. Can J Physiol Pharmacol 2015; 94:272-7. [PMID: 26762617 DOI: 10.1139/cjpp-2015-0193] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The role of hyperhomocysteinemia in coronary artery disease (CAD) patients remains unclear. The present study evaluated the relationship between homocysteine (HCys), adenosine plasma concentration (APC), plasma uric acid, and CAD severity evaluated using the SYNTAX score. We also evaluated in vitro the influence of adenosine on HCys production by hepatoma cultured cells (HuH7). Seventy-eight patients (mean age ± SD: 66.3 ± 11.3; mean SYNTAX score: 19.9 ± 12.3) and 30 healthy subjects (mean age: 61 ± 13) were included. We incubated HuH7 cells with increasing concentrations of adenosine and addressed the effect on HCys level in cell culture supernatant. Patients vs. controls had higher APC (0.82 ± 0.5 μmol/L vs 0.53 ± 0.14 μmol/L; p < 0.01), HCys (15 ± 7.6 μmol/L vs 6.8 ± 3 μmol/L, p < 0.0001), and uric acid (242.6 ± 97 vs 202 ± 59, p < 0.05) levels. APC was correlated with HCys and uric acid concentrations in patients (Pearson's R = 0.65 and 0.52; p < 0.0001, respectively). The SYNTAX score was correlated with HCys concentration. Adenosine induced a time- and dose-dependent increase in HCys in cell culture. Our data suggest that high APC is associated with HCys and uric acid concentrations in CAD patients. Whether the increased APC participates in atherosclerosis or, conversely, is part of a protective regulation process needs further investigations.
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Affiliation(s)
- J Fromonot
- a UMR MD2, Aix Marseille University and IRBA (Institute of Research in Biology of the French Army), School of Medicine, Bvd P Dramard 13015 Marseille, France.,b Laboratory of Biochemistry, Timone University Hospital, Marseille, France
| | - P Deharo
- c Department of Cardiology, Timone University Hospital, Marseille, France
| | - L Bruzzese
- a UMR MD2, Aix Marseille University and IRBA (Institute of Research in Biology of the French Army), School of Medicine, Bvd P Dramard 13015 Marseille, France
| | - T Cuisset
- c Department of Cardiology, Timone University Hospital, Marseille, France
| | - J Quilici
- c Department of Cardiology, Timone University Hospital, Marseille, France
| | - S Bonatti
- d Department of Molecular Medicine and Medical Biotechnology, University of Naples "Federico II Napoly", Italia
| | - E Fenouillet
- a UMR MD2, Aix Marseille University and IRBA (Institute of Research in Biology of the French Army), School of Medicine, Bvd P Dramard 13015 Marseille, France
| | - G Mottola
- a UMR MD2, Aix Marseille University and IRBA (Institute of Research in Biology of the French Army), School of Medicine, Bvd P Dramard 13015 Marseille, France.,b Laboratory of Biochemistry, Timone University Hospital, Marseille, France
| | - J Ruf
- a UMR MD2, Aix Marseille University and IRBA (Institute of Research in Biology of the French Army), School of Medicine, Bvd P Dramard 13015 Marseille, France
| | - R Guieu
- a UMR MD2, Aix Marseille University and IRBA (Institute of Research in Biology of the French Army), School of Medicine, Bvd P Dramard 13015 Marseille, France.,b Laboratory of Biochemistry, Timone University Hospital, Marseille, France
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