• Airway obstruction, dynamic hyperinflation, and breathing pattern during incremental exercise in COPD patients 

      Frisk, Bente; Espehaug, Birgitte; Hardie, Jon Andrew; Strand, Liv Inger; Moe-Nilssen, Rolf; Eagan, Tomas Mikal; Bakke, Per; Thorsen, Einar (Peer reviewed; Journal article, 2014-02-01)
      Ventilatory capacity is reduced in chronic obstructive pulmonary disease (COPD) patients. Tidal volume (VT) is lower and breathing frequency higher at a given ventilation (VE) compared to healthy subjects. We examined ...
    • Chronic Obstructive Pulmonary Disease Is Associated with Low Levels of Vitamin D 

      Persson, Louise Jeanette Pauline; Aanerud, Marianne; Hiemstra, Pieter Sicco; Hardie, Jon Andrew; Bakke, Per; Eagan, Tomas Mikal (Peer reviewed; Journal article, 2012-06-21)
      Introduction: COPD patients may be at increased risk for vitamin D (25(OH)D) deficiency, but risk factors for deficiency among COPD patients have not been extensively reported. Methods: Serum 25(OH)D levels were measured ...
    • DNAH5 is associated with total lung capacity in chronic obstructive pulmonary disease 

      Lee, Jin H.; McDonald, Merry-Lynn N.; Cho, Michael H.; Wan, Emily S.; Castaldi, Peter J.; Hunninghake, Gary M.; Marchetti, Nathaniel; Lynch, David A.; Crapo, James D.; Lomas, David A.; Coxson, Harvey O.; Bakke, Per; Silverman, Edwin K.; Hersh, Craig P. (Peer reviewed; Journal article, 2014-08-20)
      Background: Chronic obstructive pulmonary disease (COPD) is characterized by expiratory flow limitation, causing air trapping and lung hyperinflation. Hyperinflation leads to reduced exercise tolerance and poor quality of ...
    • Effects of lifestyle intervention in persons at risk for type 2 diabetes mellitus - results from a randomised, controlled trial 

      Nilsen, Vegard; Bakke, Per; Gallefoss, Frode (Peer reviewed; Journal article, 2011-11-25)
      Background: Lifestyle change is probably the most important single action to prevent type 2 diabetes mellitus. The purpose of this study was to assess the effects of a low-intensity individual lifestyle intervention by a ...
    • Exposure to Household Air Pollution from Wood Combustion and Association with Respiratory Symptoms and Lung Function in Nonsmoking Women: Results from the RESPIRE Trial, Guatemala 

      Pope, Daniel; Diaz, Esperanza; Smith-Sivertsen, Tone; Lie, Rolv Terje; Bakke, Per; Balmes, John R.; Smith, Kirk R.; Bruce, Nigel G. (Peer reviewed; Journal article, 2015-04)
      Background: With 40% of the world’s population relying on solid fuel, household air pollution (HAP) represents a major preventable risk factor for COPD (chronic obstructive pulmonary disease). Meta-analyses have confirmed ...
    • Genetic susceptibility for chronic bronchitis in chronic obstructive pulmonary disease 

      Lee, Jin H.; Cho, Michael H.; Hersh, Craig P.; McDonald, Merry-Lynn N.; Crapo, James D.; Bakke, Per; Gulsvik, Amund; Comellas, Alejandro P.; Wendt, Christine H.; Lomas, David A.; Kim, Victor; Silverman, Edwin K.; on behalf of the COPDGene and ECLIPSE Investigators (Peer reviewed; Journal article, 2014-09-21)
      Background: Chronic bronchitis (CB) is one of the classic phenotypes of COPD. The aims of our study were to investigate genetic variants associated with COPD subjects with CB relative to smokers with normal spirometry, and ...
    • Genetics of Sputum Gene Expression in Chronic Obstructive Pulmonary Disease 

      Qiu, Weiliang; Cho, Michael H.; Riley, John H.; Anderson, Wayne H.; Singh, Dave; Bakke, Per; Gulsvik, Amund; Litonjua, Augusto A.; Lomas, David A.; Crapo, James D.; Beaty, Terri H.; Celli, Bartolome R.; Rennard, Stephen I.; Tal-Singer, Ruth; Fox, Steven M.; Silverman, Edwin K.; Hersh, Craig P. (Peer reviewed; Journal article, 2011-09-16)
      Previous expression quantitative trait loci (eQTL) studies have performed genetic association studies for gene expression, but most of these studies examined lymphoblastoid cell lines from non-diseased individuals. We ...
    • A genome-wide association study identifies risk loci for spirometric measures among smokers of European and African ancestry 

      Lutz, Sharon M; Cho, Michael H; Young, Kendra; Hersh, Craig P; Castaldi, Peter J; McDonald, Merry-Lynn; Regan, Elizabeth; Mattheisen, Manuel; DeMeo, Dawn L; Parker, Margaret; Foreman, Marilyn; Make, Barry J; Jensen, Robert L; Casaburi, Richard; Lomas, David A; Bhatt, Surya P; Bakke, Per; Gulsvik, Amund; Crapo, James D; Beaty, Terri H; Laird, Nan M; Lange, Christoph; Hokanson, John E; Silverman, Edwin K (Peer reviewed; Journal article, 2015-12-03)
      Background Pulmonary function decline is a major contributor to morbidity and mortality among smokers. Post bronchodilator FEV1 and FEV1/FVC ratio are considered the standard assessment of airflow obstruction. We performed ...
    • Nitric oxide synthase polymorphisms, gene expression and lung function in chronic obstructive pulmonary disease 

      Aminuddin, Farzian; Hackett, Tillie-Louise; Stefanowicz, Dorota; Saferali, Aabida; Paré, Peter D.; Gulsvik, Amund; Bakke, Per; Cho, Michael H.; Litonjua, Augusto A.; Lomas, David A.; Anderson, Wayne H.; Beaty, Terri H.; Silverman, Edwin K.; Sandford, Andrew J. (Peer reviewed; Journal article, 2013-11-06)
      Background: Due to the pleiotropic effects of nitric oxide (NO) within the lungs, it is likely that NO is a significant factor in the pathogenesis of chronic obstructive pulmonary disease (COPD). The aim of this study was ...
    • No increase in response rate by adding a web response option to a postal population survey: A randomized trial 

      Brøgger, Jan; Nystad, Wenche; Cappelen, Inger; Bakke, Per (Peer reviewed; Journal article, 2007-12-31)
      Background: There is substantial interest in use of the Internet for surveys, but there have been few health-oriented, large, randomized trials of general population surveys on the Internet. It is unclear whether providing ...
    • Peak oxygen uptake and breathing pattern in COPD patients – a four-year longitudinal study 

      Frisk, Bente; Hardie, Jon Andrew; Espehaug, Birgitte; Strand, Liv Inger; Moe-Nilssen, Rolf; Eagan, Tomas Mikal; Bakke, Per; Thorsen, Einar (Peer reviewed; Journal article, 2015-08-19)
      Background: Activities of daily living in patients with chronic obstructive pulmonary disease (COPD) are limited by exertional dyspnea and reduced exercise capacity. The aims of the study were to examine longitudinal changes ...
    • Persistent Systemic Inflammation is Associated with Poor Clinical Outcomes in COPD: A Novel Phenotype 

      Agustí, Alvar; Edwards, Lisa D.; Rennard, Stephen I.; MacNee, William; Tal-Singer, Ruth; Bakke, Per; ECLIPSE (Peer reviewed; Journal article, 2012-05-18)
      Background: Because chronic obstructive pulmonary disease (COPD) is a heterogeneous condition, the identification of specific clinical phenotypes is key to developing more effective therapies. To explore if the persistence ...
    • Predictors of exacerbations in chronic obstructive pulmonary disease - results from the Bergen COPD Cohort Study 

      Husebø, Gunnar Reksten; Bakke, Per; Aanerud, Marianne; Hardie, Jon Andrew; Ueland, Thor; Grønseth, Rune; Persson, Louise Jeanette Pauline; Aukrust, Pål; Eagan, Tomas Mikal (Peer reviewed; Journal article, 2014-10-03)
      Background: COPD exacerbations accelerate disease progression. Aims To examine if COPD characteristics and systemic inflammatory markers predict the risk for acute COPD exacerbation (AECOPD) frequency and duration. Methods: ...
    • Respiratory symptoms and mortality in four general population cohorts over 45 years 

      Gulsvik, Amund; Bakke, Per; Brøgger, Jan; Nielsen, Rune; Stavem, Knut (Journal article; Peer reviewed, 2020)
      Objective: This study assessed the association between respiratory symptoms and mortality in four cohorts of the general population in Norway aged 15–75 years and in selected subgroups in the pooled sample. Methods: The ...
    • Respiratory symptoms in adults are related to impaired quality of life, regardless of asthma and COPD: results from the European community respiratory health survey 

      Voll-Aanerud, Marianne; Eagan, Tomas Mikal; Plana, Estel; Omenaas, Ernst; Bakke, Per; Svanes, Cecilie; Siroux, Valerie; Pin, Isabelle; Antó, Josep M.; Leynaert, Benedicte (Peer reviewed; Journal article, 2010-09-27)
      Background Respiratory symptoms are common in the general population, and their presence is related to Health-related quality of life (HRQoL). The objective was to describe the association of respiratory symptoms with HRQoL ...
    • Susceptibility to chronic mucus hypersecretion, a genome wide association study 

      Dijkstra, Akkelies E.; Smolonska, J; Van Den Berge, M; Wijmenga, C; Zanen, P; Luinge, MA; Platteel, M; Lammers, JW; Dahlback, M; Tosh, K; Hiemstra, PS; Sterk, PJ; Spira, A; Vestbo, J; Nordestgaard, BG; Benn, M; Nielsen, SF; Dahl, M; Verschuren, WM; Picavet, HSJ; Smit, HA; Owsijewitsch, M; Kauczor, HU; De Koning, HJ; Nizankowska-Mogilnicka, E; Mejza, F; Nastalek, P; Van Diemen, CC; Cho, MH; Silverman, EK; Crapo, JD; Beaty, TH; Lomas, DA; Bakke, Per; Gulsvik, Amund; Bosse, Y; Obeidat, MA; Loth, DW; Lahousse, L; Rivadeneira, F; Uitterlinden, AG; Hofman, A; Stricker, BH; Brusselle, GG; Van Duijn, CM; Brouwer, U; Koppelman, GH; Vonk, JM; Nawijn, MC; Groen, HJM; Timens, W; Boezen, HM; Postma, DS; Alizadeh, BZ; De Boer, RA; Bruinenberg, M; Franke, L; Van Der Harst, P; Hillege, HL; Van Der Klauw, MM; Navis, G; Ormel, J; Rosmalen, J; Slaets, JP; Snieder, H; Stolk, RP; Wolffenbuttel, B (Peer reviewed; Journal article, 2014-04-08)
      Background: Chronic mucus hypersecretion (CMH) is associated with an increased frequency of respiratory infections, excess lung function decline, and increased hospitalisation and mortality rates in the general population. ...
    • Swabbing for respiratory viral infections in older patients: a comparison of rayon and nylon flocked swabs 

      Hernes, Susanne; Quarsten, Hanne; Hagen, Egil; Lyngroth, Anne Liv; Pripp, Are Hugo; Bjorvatn, Bjarne; Bakke, Per (Peer reviewed; Journal article, 2011)
      The purpose of this study was to compare the sampling efficacy of rayon swabs and nylon flocked swabs, and of oropharyngeal and nasopharyngeal specimens for the detection of respiratory viruses in elderly patients. Samples ...
    • TNF-α is associated with loss of lean body mass only in already cachectic COPD patients 

      Eagan, Tomas Mikal; Gabazza, Esteban C.; D’Alessandro-Gabazza, Corina; Gil-Bernabe, Paloma; Aoki, Shinya; Hardie, Jon Andrew; Bakke, Per; Wagner, Peter D. (Peer reviewed; Journal article, 2012-06-18)