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  • 1
    Electronic Resource
    Electronic Resource
    T393C polymorphism of GNAS1 associated with the autonomic nervous system in young, healthy Japanese subjects (2004)
    Oxford, UK : Blackwell Science Pty
    Clinical and experimental pharmacology and physiology 31 (2004), S. 0 
    Details
    ISSN: 1440-1681
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 1. T393C polymorphism of the gene encoding the Gs-protein α-subunit (GNAS1) has been reported recently to be associated with hypertension in which dysfunctions of the autonomic nervous system (ANS) are closely involved. In the present study, the association of this polymorphism with ANS activity was investigated in young, healthy Japanese males.2. Four hundred and one subjects were genotyped for the T393C polymorphism of GNAS1 by polymerase chain reaction–restriction fragment length polymorphism. Autonomic nervous system activity during supine rest and when standing was assessed in 137 subjects by electrocardiogram R-R interval power spectral analysis.3. One hundred and fifty-four subjects (38.4%) were homozygous for the T allele (TT), 188 (46.9%) were heterozygous (TC) and 59 (14.7%) were homozygous for the C allele (CC). There were no significant differences as to genotype among the clinical characteristics investigated. In power spectral analysis of heart rate variability, the high-frequency component and parasympathetic nervous system (PNS) index during supine rest were significantly lower in TT and TC carriers than in CC carriers. Furthermore, the increase in heart rate and the responsiveness of sympathetic nervous system index and PNS index to postural change from supine rest to standing were significantly lower in TT and TC carriers than in CC carriers.4. These observations suggest that the GNAS1 T393C polymorphism is associated with ANS activity in youth, so that it may be useful as a genetic marker for future pathogenesis of hypertension. Follow-up studies are necessary to clarify the prevalence rates of hypertension among 393T allele carriers in the present study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1440-1681.2004.04059.x
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  • 2
    Electronic Resource
    Electronic Resource
    EPIDEMIOLOGICAL INVESTIGATION OF INSULIN RESISTANCE SYNDROME (SYNDROME X) IN A CITY IN JAPAN (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 22 (1995), S. 0 
    Details
    ISSN: 1440-1681
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 1. In order to study the prevalence of insulin resistance syndrome (syndrome X) in Japanese subjects, inhabitants aged above 40 years living in Osaka-Sayama city from September 1992 through December 1993 were investigated. The population-based study was performed on 2498 subjects (661 males and 1837 females) constituting 10.9% of the total population aged above 40 years.2. The prevalence of glucose intolerance was 8.7% (n= 218) in 2498 subjects. The prevalence of hypertension was 36.9% (n= 923) and that of hypertriglyceridaemia was 19.0% (n= 475). The prevalence of syndrome X as characterized by an association of glucose intolerance, hypertension and hypertriglyceridaemia was 1.6% (n= 39) in all subjects examined and 17.4% in subjects showing glucose intolerance.3. Fasting serum insulin levels were significantly higher in patients with syndrome X than in normal subjects. Furthermore, the levels were significantly correlated with blood levels of frucutosamine, fasting glucose and triglyceride, and with body mass index as well.4. In conclusion, insulin resistance syndrome (syndrome X) is also found among the larger Japanese population, and fasting serum insulin levels can be a useful marker of this metabolic disorder.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1440-1681.1995.tb02926.x
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    Paper (German National Licenses)
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