Search Results - (Author, Cooperation:A. Ogunniyi)

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  1. 1
    P. K. Joshi ; T. Esko ; H. Mattsson ; N. Eklund ; I. Gandin ; T. Nutile ; A. U. Jackson ; C. Schurmann ; A. V. Smith ; W. Zhang ; Y. Okada ; A. Stancakova ; J. D. Faul ; W. Zhao ; T. M. Bartz ; M. P. Concas ; N. Franceschini ; S. Enroth ; V. Vitart ; S. Trompet ; X. Guo ; D. I. Chasman ; J. R. O'Connel ; T. Corre ; S. S. Nongmaithem ; Y. Chen ; M. Mangino ; D. Ruggiero ; M. Traglia ; A. E. Farmaki ; T. Kacprowski ; A. Bjonnes ; A. van der Spek ; Y. Wu ; A. K. Giri ; L. R. Yanek ; L. Wang ; E. Hofer ; C. A. Rietveld ; O. McLeod ; M. C. Cornelis ; C. Pattaro ; N. Verweij ; C. Baumbach ; A. Abdellaoui ; H. R. Warren ; D. Vuckovic ; H. Mei ; C. Bouchard ; J. R. Perry ; S. Cappellani ; S. S. Mirza ; M. C. Benton ; U. Broeckel ; S. E. Medland ; P. A. Lind ; G. Malerba ; A. Drong ; L. Yengo ; L. F. Bielak ; D. Zhi ; P. J. van der Most ; D. Shriner ; R. Magi ; G. Hemani ; T. Karaderi ; Z. Wang ; T. Liu ; I. Demuth ; J. H. Zhao ; W. Meng ; L. Lataniotis ; S. W. van der Laan ; J. P. Bradfield ; A. R. Wood ; A. Bonnefond ; T. S. Ahluwalia ; L. M. Hall ; E. Salvi ; S. Yazar ; L. Carstensen ; H. G. de Haan ; M. Abney ; U. Afzal ; M. A. Allison ; N. Amin ; F. W. Asselbergs ; S. J. Bakker ; R. G. Barr ; S. E. Baumeister ; D. J. Benjamin ; S. Bergmann ; E. Boerwinkle ; E. P. Bottinger ; A. Campbell ; A. Chakravarti ; Y. Chan ; S. J. Chanock ; C. Chen ; Y. D. Chen ; F. S. Collins ; J. Connell ; A. Correa ; L. A. Cupples ; G. D. Smith ; G. Davies ; M. Dorr ; G. Ehret ; S. B. Ellis ; B. Feenstra ; M. F. Feitosa ; I. Ford ; C. S. Fox ; T. M. Frayling ; N. Friedrich ; F. Geller ; G. Scotland ; I. Gillham-Nasenya ; O. Gottesman ; M. Graff ; F. Grodstein ; C. Gu ; C. Haley ; C. J. Hammond ; S. E. Harris ; T. B. Harris ; N. D. Hastie ; N. L. Heard-Costa ; K. Heikkila ; L. J. Hocking ; G. Homuth ; J. J. Hottenga ; J. Huang ; J. E. Huffman ; P. G. Hysi ; M. A. Ikram ; E. Ingelsson ; A. Joensuu ; A. Johansson ; P. Jousilahti ; J. W. Jukema ; M. Kahonen ; Y. Kamatani ; S. Kanoni ; S. M. Kerr ; N. M. Khan ; P. Koellinger ; H. A. Koistinen ; M. K. Kooner ; M. Kubo ; J. Kuusisto ; J. Lahti ; L. J. Launer ; R. A. Lea ; B. Lehne ; T. Lehtimaki ; D. C. Liewald ; L. Lind ; M. Loh ; M. L. Lokki ; S. J. London ; S. J. Loomis ; A. Loukola ; Y. Lu ; T. Lumley ; A. Lundqvist ; S. Mannisto ; P. Marques-Vidal ; C. Masciullo ; A. Matchan ; R. A. Mathias ; K. Matsuda ; J. B. Meigs ; C. Meisinger ; T. Meitinger ; C. Menni ; F. D. Mentch ; E. Mihailov ; L. Milani ; M. E. Montasser ; G. W. Montgomery ; A. Morrison ; R. H. Myers ; R. Nadukuru ; P. Navarro ; M. Nelis ; M. S. Nieminen ; I. M. Nolte ; G. T. O'Connor ; A. Ogunniyi ; S. Padmanabhan ; W. R. Palmas ; J. S. Pankow ; I. Patarcic ; F. Pavani ; P. A. Peyser ; K. Pietilainen ; N. Poulter ; I. Prokopenko ; S. Ralhan ; P. Redmond ; S. S. Rich ; H. Rissanen ; A. Robino ; L. M. Rose ; R. Rose ; C. Sala ; B. Salako ; V. Salomaa ; A. P. Sarin ; R. Saxena ; H. Schmidt ; L. J. Scott ; W. R. Scott ; B. Sennblad ; S. 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Chambers ; J. S. Kooner ; D. P. Strachan ; H. Campbell ; J. N. Hirschhorn ; M. Perola ; O. Polasek ; J. F. Wilson
    Nature Publishing Group (NPG)
    Published 2015
    Staff View
    Publication Date:
    2015-07-02
    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:
    Biological Evolution ; Blood Pressure/genetics ; Body Height/*genetics ; Cholesterol, LDL/genetics ; *Cognition ; Cohort Studies ; Educational Status ; Female ; Forced Expiratory Volume/genetics ; Genome, Human/genetics ; *Homozygote ; Humans ; Lung Volume Measurements ; Male ; Phenotype
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  2. 2
    G. L. Birbeck ; A. C. Meyer ; A. Ogunniyi
    Nature Publishing Group (NPG)
    Published 2015
    Staff View
    Publication Date:
    2015-11-19
    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:
    Adult ; Aged ; *Aging/psychology ; Biomedical Research ; Child ; Developing Countries/economics ; Humans ; *Nervous System Diseases/diagnosis/economics/epidemiology/etiology ; *Resource Allocation
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Staff View
    Publication Date:
    2011-07-08
    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:
    *Global Health ; Humans ; Mental Disorders/economics/epidemiology/prevention & control ; Mental Health/*statistics & numerical data ; Substance-Related Disorders/economics/epidemiology ; World Health Organization
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Staff View
    ISSN:
    1365-2958
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Medicine
    Notes:
    A soluble flavoprotein that reoxidizes NADH and reduces molecular oxygen to water was purified from the facultative anaerobic human pathogen Streptococcus pneumoniae. The nucleotide sequence of nox, the gene which encodes it, has been determined and was characterized at the functional and physiological level. Several nox mutants were obtained by insertion, nonsense or missense mutation. In extracts from these strains, no NADH oxidase activity could be measured, suggesting that a single enzyme encoded by nox, having a C44 in its active site, was utilizing O2 to oxidize NADH in S. pneumoniae. The growth rate and yield of the NADH oxidase-deficient strains were not changed under aerobic or anaerobic conditions, but the efficiency of development of competence for genetic transformation during growth was markedly altered. Conditions that triggered competence induction did not affect the amount of Nox, as measured using Western blotting, indicating that nox does not belong to the competence-regulated genetic network. The decrease in competence efficiency due to the nox mutations was similar to that due to the absence of oxygen in the nox+ strain, suggesting that input of oxygen into the metabolism via NADH oxidase was important for controlling competence development throughout growth. This was not related to regulation of nox expression by O2. Interestingly, the virulence and persistence in mice of a blood isolate was attenuated by a nox insertion mutation. Global cellular responses of S. pneumoniae, such as competence for genetic exchange or virulence in a mammalian host, could thus be modulated by oxygen via the NADH oxidase activity of the bacteria, although the bacterial energetic metabolism is essentially anaerobic. The enzymatic activity of the NADH oxidase coded by nox was probably involved in transducing the external signal, corresponding to O2 availability, to the cell metabolism and physiology; thus, this enzyme may function as an oxygen sensor. This work establishes, for the first time, the role of O2 in the regulation of pneumococcal transformability and virulence.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  5. 5
    Staff View
    ISSN:
    1365-2958
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Medicine
    Notes:
    The psaBCA locus of Streptococcus pneumoniae encodes a putative ABC Mn2+-permease complex. Downstream of the operon is psaD, which may be co-transcribed and encodes a thiol peroxidase. Previously, there has been discordance concerning the phenotypic impact of mutations in the psa locus, resolution of which has been complicated by differences in mutant construction and the possibility of polar effects. Here, we constructed unmarked, in frame deletion mutants ΔpsaB, ΔpsaC, ΔpsaA, ΔpsaD, ΔpsaBC, ΔpsaBCA and ΔpsaBCAD in S. pneumoniae D39 to examine the role of each gene within the locus in Mn2+ uptake, susceptibility to oxidative stress, virulence, nasopharyngeal colonization and chain morphology. The requirement for Mn2+ for growth and transformation was also investigated for all mutants. Inductively coupled plasma mass spectrometry (ICP-MS) analysis provided the first direct evidence that PsaBCA is indeed a Mn2+ transporter. However, this study did not substantiate previous reports that the locus plays a role in choline-binding protein pro-duction or chain morphology. We also confirmed the importance of the Psa permease in systemic virulence and resistance to superoxide and hydrogen peroxide, as well as demonstrating a role in nasopharyngeal colonization for the first time. Further evi-dence is provided to support the requirement for Mn2+ supplementation for growth and transformation of ΔpsaB, ΔpsaC, ΔpsaA, ΔpsaBC, ΔpsaBCA and ΔpsaBCAD mutants. However, transformation, as well as growth, of the ΔpsaD mutant was not dependent upon Mn2+ supplementation. We also show that, apart from sensitivity to hydrogen peroxide, the ΔpsaD mutant exhibited essentially similar phenotypes to those of the wild type. Western blot analysis with a PsaD antiserum showed that deleting any of the genes upstream of psaD did not affect its expression. However, we found that deleting psaB resulted in decreased expression of PsaA relative to that in D39, whereas deleting both psaB and psaC resulted in at least wild-type levels of PsaA.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses