Search Results - (Author, Cooperation:H. V. Huikuri)

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  1. 1
    J. Yang ; R. J. Loos ; J. E. Powell ; S. E. Medland ; E. K. Speliotes ; D. I. Chasman ; L. M. Rose ; G. Thorleifsson ; V. Steinthorsdottir ; R. Magi ; L. Waite ; A. V. Smith ; L. M. Yerges-Armstrong ; K. L. Monda ; D. Hadley ; A. Mahajan ; G. Li ; K. Kapur ; V. Vitart ; J. E. Huffman ; S. R. Wang ; C. Palmer ; T. Esko ; K. Fischer ; J. H. Zhao ; A. Demirkan ; A. Isaacs ; M. F. Feitosa ; J. Luan ; N. L. Heard-Costa ; C. White ; A. U. Jackson ; M. Preuss ; A. Ziegler ; J. Eriksson ; Z. Kutalik ; F. Frau ; I. M. Nolte ; J. V. Van Vliet-Ostaptchouk ; J. J. Hottenga ; K. B. Jacobs ; N. Verweij ; A. Goel ; C. Medina-Gomez ; K. Estrada ; J. L. Bragg-Gresham ; S. Sanna ; C. Sidore ; J. Tyrer ; A. Teumer ; I. Prokopenko ; M. Mangino ; C. M. Lindgren ; T. L. Assimes ; A. R. Shuldiner ; J. Hui ; J. P. Beilby ; W. L. McArdle ; P. Hall ; T. Haritunians ; L. Zgaga ; I. Kolcic ; O. Polasek ; T. Zemunik ; B. A. Oostra ; M. J. Junttila ; H. Gronberg ; S. Schreiber ; A. Peters ; A. A. Hicks ; J. Stephens ; N. S. Foad ; J. Laitinen ; A. Pouta ; M. Kaakinen ; G. Willemsen ; J. M. Vink ; S. H. Wild ; G. Navis ; F. W. Asselbergs ; G. Homuth ; U. John ; C. Iribarren ; T. Harris ; L. Launer ; V. Gudnason ; J. R. O'Connell ; E. Boerwinkle ; G. Cadby ; L. J. Palmer ; A. L. James ; A. W. Musk ; E. Ingelsson ; B. M. Psaty ; J. S. Beckmann ; G. Waeber ; P. Vollenweider ; C. Hayward ; A. F. Wright ; I. Rudan ; L. C. Groop ; A. Metspalu ; K. T. Khaw ; C. M. van Duijn ; I. B. Borecki ; M. A. Province ; N. J. Wareham ; J. C. Tardif ; H. V. Huikuri ; L. A. Cupples ; L. D. Atwood ; C. S. Fox ; M. Boehnke ; F. S. Collins ; K. L. Mohlke ; J. Erdmann ; H. Schunkert ; C. Hengstenberg ; K. Stark ; M. Lorentzon ; C. Ohlsson ; D. Cusi ; J. A. Staessen ; M. M. Van der Klauw ; P. P. Pramstaller ; S. Kathiresan ; J. D. Jolley ; S. Ripatti ; M. R. Jarvelin ; E. J. de Geus ; D. I. Boomsma ; B. Penninx ; J. F. Wilson ; H. Campbell ; S. J. Chanock ; P. van der Harst ; A. Hamsten ; H. Watkins ; A. Hofman ; J. C. Witteman ; M. C. Zillikens ; A. G. Uitterlinden ; F. Rivadeneira ; L. A. Kiemeney ; S. H. Vermeulen ; G. R. Abecasis ; D. Schlessinger ; S. Schipf ; M. Stumvoll ; A. Tonjes ; T. D. Spector ; K. E. North ; G. Lettre ; M. I. McCarthy ; S. I. Berndt ; A. C. Heath ; P. A. Madden ; D. R. Nyholt ; G. W. Montgomery ; N. G. Martin ; B. McKnight ; D. P. Strachan ; W. G. Hill ; H. Snieder ; P. M. Ridker ; U. Thorsteinsdottir ; K. Stefansson ; T. M. Frayling ; J. N. Hirschhorn ; M. E. Goddard ; P. M. Visscher
    Nature Publishing Group (NPG)
    Published 2012
    Staff View
    Publication Date:
    2012-09-18
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Body Height/genetics ; *Body Mass Index ; Co-Repressor Proteins ; Female ; *Genetic Variation ; Genome-Wide Association Study ; Humans ; Male ; Nerve Tissue Proteins/genetics ; *Phenotype ; Polymorphism, Single Nucleotide ; Proteins/*genetics ; Repressor Proteins/genetics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Penttilä, J. ; Helminen, A. ; Jartti, T. ; Kuusela, T. ; Huikuri, H. V. ; Tulppo, M. P. ; Scheinin, H.

    Oxford, UK : Blackwell Science Ltd
    Published 2003
    Staff View
    ISSN:
    1474-8673
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Chemistry and Pharmacology
    Medicine
    Notes:
    1 Cardiac vagal outflow is the major factor determining the magnitude of heart rate (HR) variability analysed by traditional time and frequency domain methods. New analysis techniques, such as fractal and complexity methods, have been developed to probe non-linear features in HR behaviour that may not be detectable by traditional methods.2 We investigated the effects of vagal blockade (glycopyrrolate i.v. 5 μg kg−1 h−1 for 2 h, n = 8 vs. unmedicated control group, n = 8) and various breathing patterns (n = 12) on two non-linear measures of HR variability – detrended fluctuation analysis (DFA) and approximate entropy (ApEn) – in healthy male volunteers.3 Glycopyrrolate decreased the mean (±SD) ApEn from 1.46 ± 0.18 to 0.85 ± 0.24 (P = 0.001 in comparison with the control group), and increased the short-term (α1) and intermediate-term (α2) fractal scaling exponents of DFA, α1 from 0.96 ± 0.19 to 1.43 ± 0.29 (P = 0.003) and α2 from 1.13 ± 0.10 to 1.34 ± 0.14 (P 〈 0.001).4 Decrease in fixed respiration rate from 15 to 6 breaths min−1 increased α1 from 0.83 ± 0.25 to 1.18 ± 0.27 (P 〈 0.001), but decreased α2 from 0.88 ± 0.09 to 0.45 ± 0.17 (P 〈 0.001) and ApEn from 1.26 ± 0.12 to 1.10 ± 0.14 (P = 0.028). Rapid breathing (24 min−1) had no influence on these non-linear measures of HR variability. Hyperventilation (15 min−1, tidal volume increased voluntarily by 0.5 l) decreased α1 from 0.83 ± 0.25 to 0.66 ± 0.28 (P = 0.002) but did not affect α2 or ApEn.5 To conclude, vagal blockade alters the fractal scaling properties of R-R intervals (α1, α2) and reduces the complexity (ApEn) of HR behaviour. Both the fractal and complexity measures of HR variability can also be influenced by changes in the breathing pattern.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1046/j.1474-8673.2003.00293.x

    Articles: DFG German National Licenses
  3. 3
    Staff View
    ISSN:
    1432-5233
    Keywords:
    Silent ischaemia ; Risk factors ; Atherosclerosis
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Abstract The risk factors for asymptomatic coronary artery disease (CAD) were examined in 138 diabetic patients. Following non-invasive screening examinations (exercise electrocardiography, dynamic thallium scintigraphy, 24-h electrocardiographic recording), CAD was confirmed angiographically in 21 symptom-free diabetic subjects with an ischaemic finding in at least one of the non-invasive tests. The prevalence of asymptomatic CAD in this cohort of diabetic patients was 21/132 (16%), which may be an underestimation because 6 patients refused angiography. Risk factors (age, diabetes, smoking, hypertension, serum lipoproteins, apoproteins and apo E phenotypes) were analysed according to the presence or absence of CAD. Multivariate logistic stepwise analysis did not show any definite changes of serum lipids, lipoproteins and apoproteins in type 1 (n=72) and type 2 (n=66) diabetic patients with or without asymptomatic CAD. The only factors associated with asymptomatic CAD were the duration of diabetes (P〈0.005) and the age of the patient (P〈0.05). These results suggest that in diabetic patients the major risk factor for premature coronary atherosclerosis is diabetes itself. Assessment of other risk factors does not seem to define any subgroup with asymptomatic CAD.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00571953

    Articles: DFG German National Licenses
  4. 4
    Staff View
    ISSN:
    1435-1544
    Keywords:
    Key words Heart rate variability – arrhythmias
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Summary Analysis of heart rate dynamics by methods based on nonlinear dynamics has opened a new approach for studying the abnormalities in heart rate behavior as a predictor of cardiac arrhythmias. Recent studies have shown that the new nonlinear measures, particularly fractal analysis methods of heart rate dynamics, perform better than traditional analysis methods as a predictor of sudden cardiac death in post-infarction populations. Altered short-term fractal properties of heart rate dynamics have also been shown to precede the onset of ventricular tachyarrhythmias. Reduced approximate entropy, a measure of complexity of heart rate variability has been observed to precede the spontaneous onset of atrial fibrillation. These findings support the notion that some nonlinear methods, such as fractal and complexity measures, give important new information for the prediction of the onset of cardiac arrhythmias.¶   This article provides a review of our current knowledge of the usefulness of newer dynamic measures of heart rate fluctuation both in risk stratification and as predictors of spontaneous onset of cardiac arrhythmias.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/s003990070032

    Articles: DFG German National Licenses