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Zelazowska M, Lelonek M, Fendler W, et al. Arg389Gly β1-adrenergic receptor polymorphism and susceptibility to syncope during tilt test. Arch Med Sci. 2014;10(2):240-5doi: 10.5114/aoms.2014.42576.
Zelazowska, M., Lelonek, M., Fendler, W., & Pietrucha, T. (2014). Arg389Gly β1-adrenergic receptor polymorphism and susceptibility to syncope during tilt test. Archives of medical science : AMS, 10(2), 240-5. https://doi.org/10.5114/aoms.2014.42576
Zelazowska, Monika, et al. "Arg389Gly β1-adrenergic receptor polymorphism and susceptibility to syncope during tilt test." Archives of medical science : AMS vol. 10,2 (2014): 240-5. doi: https://doi.org/10.5114/aoms.2014.42576
Zelazowska M, Lelonek M, Fendler W, Pietrucha T. Arg389Gly β1-adrenergic receptor polymorphism and susceptibility to syncope during tilt test. Arch Med Sci. 2014 May 12;10(2):240-5. doi: 10.5114/aoms.2014.42576. Epub 2014 May 13. PMID: 24904655; PMCID: PMC4042044.
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Arch Med Sci. 2014 May 12;10(2):240-5. doi: 10.5114/aoms.2014.42576. Epub 2014 May 13.

Arg389Gly β1-adrenergic receptor polymorphism and susceptibility to syncope during tilt test.

Archives of medical science : AMS

Monika Zelazowska, Małgorzata Lelonek, Wojciech Fendler, Tadeusz Pietrucha

Affiliations

  1. Department of Medical Biotechnology, Medical University of Lodz, Poland.
  2. Department of Cardiology, Medical University of Lodz, Poland.
  3. Department of Paediatrics, Oncology, Haematology and Diabetology, Medical University of Lodz, Poland.

PMID: 24904655 PMCID: PMC4042044 DOI: 10.5114/aoms.2014.42576

Abstract

INTRODUCTION: Numerous hormones, neurotransmitters, and other stimuli exert their biological effect on cellular functioning through heptahelical receptors coupled to G proteins (GPCR - G protein-coupled receptors). Adrenergic receptors that belong to this superfamily of receptors are components of the sympathetic nervous system. They play a pivotal role in blood pressure regulation and myocardial contractility. Alterations of the adrenergic receptor pathway have been suggested to be involved in the pathophysiology of vasovagal syncope (VVS). The aim of the present study was to evaluate the distribution of Arg389Gly polymorphism within the ADRB1 gene among patients with recurrent syncope.

MATERIAL AND METHODS: Arg389Gly single nucleotide polymorphism was analyzed in 205 patients with recurrent syncope. Ninety-five patients (46%) had a positive head-up tilt test (HUT) result. The control group comprised 143 non-fainting subjects. Genotyping was performed by restriction fragment length polymorphism (RFLP) with BstNI enzyme.

RESULTS: Both analyzed groups had similar distribution of the 389Gly allele. Sixty percent of polymorphic 389Gly carriers belong to the group of syncopal patients, while 40% belong to the control group of healthy subjects.

CONCLUSIONS: An association between syncopal incidence and Arg389Gly polymorphism within the ADRB1 gene was not found. The analyzed polymorphism affecting sympathetic activity does not influence vasovagal syncope in Polish patients.

Keywords: Tilt test; adrenergic receptors; genetic polymorphism; syncope

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