Common naturally occurring polymorphisms have been identified in the coding regions of the α1A-, α2B-, β1- and β2-adrenoceptor (AR) genes [α1A-AR R492C, α2B-AR insertion/deletion (I/D), β1-AR R389G, β2-AR G16R and β2-AR Q27E] and are associated with modified in vivo and in vitro functionality. We tested their possible effects on the haemodynamic responses to intravenous adrenaline (20, 40, 80 and 160ng/kg of body weight per min; 5min for each infusion rate) before and after β-blockade (propranolol) in 16 young healthy men. We monitored changes in heart rate, blood pressure (BP), ECG, coronary flow velocity and plasma adrenaline and noradrenaline. The Cys/Cys (CC) genotype of the α1A-AR R492C polymorphism was associated with a longer ECG PR interval before and during the adrenaline infusions. The deletion/deletion (D/D) genotype of the α2B-AR I/D polymorphism was associated with blunted coronary blood flow increases during the adrenaline infusion before β-blockade. The β1-AR R389G polymorphism was not associated with modified responses to infused adrenaline. Subjects carrying the Gly/Gly (GG) genotype of the β2-AR G16R polymorphism demonstrated increases in diastolic BP upon adrenaline infusion, whereas diastolic BP was decreased in the other genotype groups. These results suggest that, upon acute adrenaline infusion, the α2B-AR D/D genotype confers increased vasoconstriction and that the β2-AR GG genotype confers reduced vasodilatation.
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Research Article|
May 01 2003
Effects of common polymorphisms in the α1A-, α2B-, β1- and β2-adrenoreceptors on haemodynamic responses to adrenaline
Amir SNAPIR;
*Department of Pharmacology and Clinical Pharmacology, University of Turku, Itäinen Pitkäkatu 4, FIN-20520 Turku, Finland
Correspondence: Dr Amir Snapir (e-mail [email protected]).
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Juha KOSKENVUO;
Juha KOSKENVUO
†Department of Clinical Physiology, Nuclear Medicine and PET, Turku University Hospital, Turku, P.O. Box 52, FIN-20520 Turku, Finland
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Jyri TOIKKA;
Jyri TOIKKA
†Department of Clinical Physiology, Nuclear Medicine and PET, Turku University Hospital, Turku, P.O. Box 52, FIN-20520 Turku, Finland
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Marju ORHO-MELANDER;
Marju ORHO-MELANDER
‡Department of Endocrinology, Malmö University Hospital, Lund University, SE-205 02, Malmö, Sweden
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Susanna HINKKA;
Susanna HINKKA
§Department of Biostatistics, University of Turku, Itäinen Pitkäkatu 4, FIN-20520 Turku, Finland
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Markku SARASTE;
Markku SARASTE
†Department of Clinical Physiology, Nuclear Medicine and PET, Turku University Hospital, Turku, P.O. Box 52, FIN-20520 Turku, Finland
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Jaakko HARTIALA;
Jaakko HARTIALA
†Department of Clinical Physiology, Nuclear Medicine and PET, Turku University Hospital, Turku, P.O. Box 52, FIN-20520 Turku, Finland
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Mika SCHEININ
Mika SCHEININ
*Department of Pharmacology and Clinical Pharmacology, University of Turku, Itäinen Pitkäkatu 4, FIN-20520 Turku, Finland
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Publisher: Portland Press Ltd
Received:
October 29 2002
Revision Received:
December 19 2002
Accepted:
January 09 2003
Accepted Manuscript online:
January 09 2003
Online ISSN: 1470-8736
Print ISSN: 0143-5221
The Biochemical Society © 2003
2003
Clin Sci (Lond) (2003) 104 (5): 509–520.
Article history
Received:
October 29 2002
Revision Received:
December 19 2002
Accepted:
January 09 2003
Accepted Manuscript online:
January 09 2003
Citation
Amir SNAPIR, Juha KOSKENVUO, Jyri TOIKKA, Marju ORHO-MELANDER, Susanna HINKKA, Markku SARASTE, Jaakko HARTIALA, Mika SCHEININ; Effects of common polymorphisms in the α1A-, α2B-, β1- and β2-adrenoreceptors on haemodynamic responses to adrenaline. Clin Sci (Lond) 1 May 2003; 104 (5): 509–520. doi: https://doi.org/10.1042/CS20020299
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