Agusti, A.G., Noguera, A., Sauleda, J., Sala, E., Pons, J., and Busquets, X. (2003). Systemic effects of chronic obstructive pulmonary disease. Eur Respir J 21, 347-360.
Alley, D.E., Metter, E.J., Griswold, M.E., Harris, T.B., Simonsick, E.M., Longo, D.L., and Ferrucci, L. (2010). Changes in weight at the end of life: characterizing weight loss by time to death in a cohort study of older men. Am J Epidemiol 172, 558-565.
Antus, B., Csiszer, E., Czebe, K., and Horvath, I. (2005). Pulmonary infections increase exhaled nitric oxide in lung transplant recipients: a longitudinal study. Clin Transplant 19, 377-382.
Anzueto, A.R., Vogelmeier, C.F., Kostikas, K., Mezzi, K., Fucile, S., Bader, G., Shen, S., Banerji, D., and Fogel, R. (2017). The effect of indacaterol/glycopyrronium versus tiotropium or salmeterol/fluticasone on the prevention of clinically important deterioration in COPD. Int J Chron Obstruct Pulmon Dis 12, 1325-1337.
Bafadhel, M., Singh, D., Jenkins, C., Peterson, S., Bengtsson, T., Wessman, P., and Fagerås, M. (2020). Reduced risk of clinically important deteriorations by ICS in COPD is eosinophil dependent: a pooled post-hoc analysis. Respir Res 21, 17.
Casanova, C., Aguirre-Jaíme, A., de Torres, J.P., Pinto-Plata, V., Baz, R., Marin, J.M., Divo, M., Cordoba, E., Basaldua, S., Cote, C., et al. (2014). Longitudinal assessment in COPD patients: multidimensional variability and outcomes. Eur Respir J 43, 745-753.
Celli, B.R., Cote, C.G., Marin, J.M., Casanova, C., Montes de Oca, M., Mendez, R.A., Pinto Plata, V., and Cabral, H.J. (2004). The body-mass index, airflow obstruction, dyspnea, and exercise capacity index in chronic obstructive pulmonary disease. N Engl J Med 350, 1005-1012.
Celli, B.R., Thomas, N.E., Anderson, J.A., Ferguson, G.T., Jenkins, C.R., Jones, P.W., Vestbo, J., Knobil, K., Yates, J.C., and Calverley, P.M. (2008). Effect of pharmacotherapy on rate of decline of lung function in chronic obstructive pulmonary disease: results from the TORCH study. Am J Respir Crit Care Med 178, 332-338.
Chipps, B.E., Jarjour, N., Calhoun, W.J., Iqbal, A., Haselkorn, T., Yang, M., Brumm, J., Corren, J., Holweg, C.T.J., and Bafadhel, M. (2021). A Comprehensive Analysis of the Stability of Blood Eosinophil Levels. Ann Am Thorac Soc.
Connors, A.F., Jr., Dawson, N.V., Thomas, C., Harrell, F.E., Jr., Desbiens, N., Fulkerson, W.J., Kussin, P., Bellamy, P., Goldman, L., and Knaus, W.A. (1996). Outcomes following acute exacerbation of severe chronic obstructive lung disease. The SUPPORT investigators (Study to Understand Prognoses and Preferences for Outcomes and Risks of Treatments). Am J Respir Crit Care Med 154, 959-967.
Coxson, H.O., Chan, I.H., Mayo, J.R., Hlynsky, J., Nakano, Y., and Birmingham, C.L. (2004). Early emphysema in patients with anorexia nervosa. Am J Respir Crit Care Med 170, 748-752.
de Laurentiis, G., Maniscalco, M., Cianciulli, F., Stanziola, A., Marsico, S., Lundberg, J.O., Weitzberg, E., and Sofia, M. (2008). Exhaled nitric oxide monitoring in COPD using a portable analyzer. Pulm Pharmacol Ther 21, 689-693.
Donaldson, G.C., Seemungal, T.A., Bhowmik, A., and Wedzicha, J.A. (2002). Relationship between exacerbation frequency and lung function decline in chronic obstructive pulmonary disease. Thorax 57, 847-852.
Donohue, J.F. (2005). Minimal clinically important differences in COPD lung function. COPD 2, 111-124.
Dweik, R.A., Boggs, P.B., Erzurum, S.C., Irvin, C.G., Leigh, M.W., Lundberg, J.O., Olin, A.C., Plummer, A.L., and Taylor, D.R. (2011). An official ATS clinical practice guideline: interpretation of exhaled nitric oxide levels (FENO) for clinical applications. Am J Respir Crit Care Med 184, 602-615. Ekroos, H., Tuominen, J., and Sovijarvi, A.R. (2000). Exhaled nitric oxide and its long-term variation in healthy non-smoking subjects. Clin Physiol 20, 434-439.
Fukuchi, Y., Fernandez, L., Kuo, H.P., Mahayiddin, A., Celli, B., Decramer, M., Kesten, S., Liu, D., and Tashkin, D. (2011). Efficacy of tiotropium in COPD patients from Asia: a subgroup analysis from the UPLIFT trial. Respirology 16, 825-835.
Gaga, M., Papageorgiou, N., Yiourgioti, G., Karydi, P., Liapikou, A., Bitsakou, H., Zervas, E., Koulouris, N.G., and Holgate, S.T. (2005). Risk factors and characteristics associated with severe and difficult to treat asthma phenotype: an analysis of the ENFUMOSA group of patients based on the ECRHS questionnaire. Clin Exp Allergy 35, 954-959.
Global Initiative for Chronic Obstructive Lung Disease. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease; 2021. Available from: https://goldcopd.org. Accessed September 19, 2021.
Goddard, P.R., Nicholson, E.M., Laszlo, G., and Watt, I. (1982). Computed tomography in pulmonary emphysema. Clin Radiol 33, 379-387.
Halpin, D.M., and Tashkin, D.P. (2009). Defining disease modification in chronic obstructive pulmonary disease. COPD 6, 211-225.
Hurst, J.R., Vestbo, J., Anzueto, A., Locantore, N., Müllerova, H., Tal-Singer, R., Miller, B., Lomas, D.A., Agusti, A., Macnee, W., et al. (2010). Susceptibility to exacerbation in chronic obstructive pulmonary disease. N Engl J Med 363, 1128-1138.
Ichinose, M., Sugiura, H., Yamagata, S., Koarai, A., and Shirato, K. (2000). Increase in reactive nitrogen species production in chronic obstructive pulmonary disease airways. Am J Respir Crit Care Med 162, 701-706.
Ichinose, M., Taniguchi, H., Takizawa, A., Grönke, L., Loaiza, L., Voß, F., Zhao, Y., and Fukuchi, Y. (2016). The efficacy and safety of combined tiotropium and olodaterol via the Respimat(®) inhaler in patients with COPD: results from the Japanese sub-population of the Tonado(®) studies. Int J Chron Obstruct Pulmon Dis 11, 2017-2027.
Ishii, T., Nishimura, M., Akimoto, A., James, M.H., and Jones, P. (2018). Understanding low COPD exacerbation rates in Japan: a review and comparison with other countries. Int J Chron Obstruct Pulmon Dis 13, 3459-3471.
Jones, P.W. (2005). St. George's Respiratory Questionnaire: MCID. COPD 2, 75-79.
Jones, S.L., Kittelson, J., Cowan, J.O., Flannery, E.M., Hancox, R.J., McLachlan, C.R., and Taylor, D.R. (2001). The predictive value of exhaled nitric oxide measurements in assessing changes in asthma control. Am J Respir Crit Care Med 164, 738-743.
Kimura, H., Konno, S., Makita, H., Taniguchi, N., Shimizu, K., Suzuki, M., Kimura, H., Goudarzi, H., Nakamaru, Y., Ono, J., et al. (2018). Prospective predictors of exacerbation status in severe asthma over a 3-year follow-up. Clin Exp Allergy 48, 1137-1146.
Konno, S., Taniguchi, N., Makita, H., Nakamaru, Y., Shimizu, K., Shijubo, N., Fuke, S., Takeyabu, K., Oguri, M., Kimura, H., et al. (2018). Distinct Phenotypes of Smokers with Fixed Airflow Limitation Identified by Cluster Analysis of Severe Asthma. Ann Am Thorac Soc 15, 33-41.
Korevaar, D.A., Westerhof, G.A., Wang, J., Cohen, J.F., Spijker, R., Sterk, P.J., Bel, E.H., and Bossuyt, P.M. (2015). Diagnostic accuracy of minimally invasive markers for detection of airway eosinophilia in asthma: a systematic review and meta-analysis. Lancet Respir Med 3, 290-300. Laaban, J.P., Kouchakji, B., Dore, M.F., Orvoen-Frija, E., David, P., and Rochemaure, J. (1993). Nutritional status of patients with chronic obstructive pulmonary disease and acute respiratory failure. Chest 103, 1362-1368.
Landbo, C., Prescott, E., Lange, P., Vestbo, J., and Almdal, T.P. (1999). Prognostic value of nutritional status in chronic obstructive pulmonary disease. Am J Respir Crit Care Med 160, 1856-1861.
Machado, F.V.C., Spruit, M.A., Coenjaerds, M., Pitta, F., Reynaert, N.L., and Franssen, F.M.E. (2021). Longitudinal changes in total and regional body composition in patients with chronic obstructive pulmonary disease. Respirology 26, 851-860.
MacNee, W. (2001). Oxidative stress and lung inflammation in airways disease. Eur J Pharmacol 429, 195-207.
Makita, H., Nasuhara, Y., Nagai, K., Ito, Y., Hasegawa, M., Betsuyaku, T., Onodera, Y., Hizawa, N., and Nishimura, M. (2007). Characterisation of phenotypes based on severity of emphysema in chronic obstructive pulmonary disease. Thorax 62, 932-937.
Makita, H., Suzuki, M., Konno, S., Shimizu, K., Nasuhara, Y., Nagai, K., Akiyama, Y., Fuke, S., Saito, H., Igarashi, T., et al. (2020). Unique Mortality Profile in Japanese Patients with COPD: An Analysis from the Hokkaido COPD Cohort Study. Int J Chron Obstruct Pulmon Dis 15, 2081-2090. McGrath, K.W., Icitovic, N., Boushey, H.A., Lazarus, S.C., Sutherland, E.R., Chinchilli, V.M., and Fahy, J.V. (2012). A large subgroup of mild-to-moderate asthma is persistently noneosinophilic. Am J Respir Crit Care Med 185, 612-619.
Mitch, W.E., and Goldberg, A.L. (1996). Mechanisms of muscle wasting. The role of the ubiquitin- proteasome pathway. N Engl J Med 335, 1897-1905.
Moore, W.C., Bleecker, E.R., Curran-Everett, D., Erzurum, S.C., Ameredes, B.T., Bacharier, L., Calhoun, W.J., Castro, M., Chung, K.F., Clark, M.P., et al. (2007). Characterization of the severe asthma phenotype by the National Heart, Lung, and Blood Institute's Severe Asthma Research Program. J Allergy Clin Immunol 119, 405-413.
Nagai, K., Makita, H., Suzuki, M., Shimizu, K., Konno, S., Ito, Y.M., and Nishimura, M. (2015). Differential changes in quality of life components over 5 years in chronic obstructive pulmonary disease patients. Int J Chron Obstruct Pulmon Dis 10, 745-757.
Naya, I., Compton, C., Ismaila, A.S., Birk, R., Brealey, N., Tabberer, M., Zhu, C.Q., Lipson, D.A., and Criner, G. (2018a). Preventing clinically important deterioration with single-inhaler triple therapy in COPD. ERJ Open Res 4.
Naya, I.P., Tombs, L., Muellerova, H., Compton, C., and Jones, P.W. (2018b). Long-term outcomes following first short-term clinically important deterioration in COPD. Respir Res 19, 222.
Newby, C., Agbetile, J., Hargadon, B., Monteiro, W., Green, R., Pavord, I., Brightling, C., and Siddiqui, S. (2014). Lung function decline and variable airway inflammatory pattern: longitudinal analysis of severe asthma. J Allergy Clin Immunol 134, 287-294.
Nishimura, M., Makita, H., Nagai, K., Konno, S., Nasuhara, Y., Hasegawa, M., Shimizu, K., Betsuyaku, T., Ito, Y.M., Fuke, S., et al. (2012). Annual change in pulmonary function and clinical phenotype in chronic obstructive pulmonary disease. Am J Respir Crit Care Med 185, 44-52.
Prescott, E., Almdal, T., Mikkelsen, K.L., Tofteng, C.L., Vestbo, J., and Lange, P. (2002). Prognostic value of weight change in chronic obstructive pulmonary disease: results from the Copenhagen City Heart Study. Eur Respir J 20, 539-544.
Price, D., Wilson, A.M., Chisholm, A., Rigazio, A., Burden, A., Thomas, M., and King, C. (2016). Predicting frequent asthma exacerbations using blood eosinophil count and other patient data routinely available in clinical practice. J Asthma Allergy 9, 1-12.
Rabe, K.F., Halpin, D.M.G., Han, M.K., Miravitlles, M., Singh, D., Grönke, L., Voß, F., and Martinez, F.J. (2020). Composite endpoints in COPD: clinically important deterioration in the UPLIFT trial. Respir Res 21, 177.
Rahman, I., Morrison, D., Donaldson, K., and MacNee, W. (1996). Systemic oxidative stress in asthma, COPD, and smokers. Am J Respir Crit Care Med 154, 1055-1060.
Reid, M.B. (2001). COPD as a muscle disease. Am J Respir Crit Care Med 164, 1101-1102. Robinson, D., Humbert, M., Buhl, R., Cruz, A.A., Inoue, H., Korom, S., Hanania, N.A., and Nair, P. (2017). Revisiting Type 2-high and Type 2-low airway inflammation in asthma: current knowledge and therapeutic implications. Clin Exp Allergy 47, 161-175.
Saito, J., Gibeon, D., Macedo, P., Menzies-Gow, A., Bhavsar, P.K., and Chung, K.F. (2014). Domiciliary diurnal variation of exhaled nitric oxide fraction for asthma control. Eur Respir J 43, 474-484.
Schols, A.M., Broekhuizen, R., Weling-Scheepers, C.A., and Wouters, E.F. (2005). Body composition and mortality in chronic obstructive pulmonary disease. Am J Clin Nutr 82, 53-59.
Schols, A.M., Buurman, W.A., Staal van den Brekel, A.J., Dentener, M.A., and Wouters, E.F. (1996). Evidence for a relation between metabolic derangements and increased levels of inflammatory mediators in a subgroup of patients with chronic obstructive pulmonary disease. Thorax 51, 819- 824.
Schols, A.M., Slangen, J., Volovics, L., and Wouters, E.F. (1998). Weight loss is a reversible factor in the prognosis of chronic obstructive pulmonary disease. Am J Respir Crit Care Med 157, 1791-1797. Shome, G.P., Starnes, J.D., 3rd, Shearer, M., Kennedy, R., Way, A., Arif, A., and Prabhakar, S. (2006). Exhaled nitric oxide in asthma: variability, relation to asthma severity, and peripheral blood lymphocyte cytokine expression. J Asthma 43, 95-99.
Silkoff, P.E., Lent, A.M., Busacker, A.A., Katial, R.K., Balzar, S., Strand, M., and Wenzel, S.E. (2005). Exhaled nitric oxide identifies the persistent eosinophilic phenotype in severe refractory asthma. J Allergy Clin Immunol 116, 1249-1255.
Singh, D., Criner, G.J., Naya, I., Jones, P.W., Tombs, L., Lipson, D.A., and Han, M.K. (2020). Measuring disease activity in COPD: is clinically important deterioration the answer? Respir Res 21, 134.
Singh, D., Maleki-Yazdi, M.R., Tombs, L., Iqbal, A., Fahy, W.A., and Naya, I. (2016). Prevention of clinically important deteriorations in COPD with umeclidinium/vilanterol. Int J Chron Obstruct Pulmon Dis 11, 1413-1424.
Sinha, A., Lutter, R., Xu, B., Dekker, T., Dierdorp, B., Sterk, P.J., Frey, U., and Eckert, E.D. (2019). Loss of adaptive capacity in asthmatic patients revealed by biomarker fluctuation dynamics after rhinovirus challenge. Elife 8.
Smith, A.D., Cowan, J.O., Brassett, K.P., Filsell, S., McLachlan, C., Monti-Sheehan, G., Peter Herbison, G., and Robin Taylor, D. (2005). Exhaled nitric oxide: a predictor of steroid response. Am J Respir Crit Care Med 172, 453-459.
Suzuki, M., Makita, H., Ito, Y.M., Nagai, K., Konno, S., and Nishimura, M. (2014). Clinical features and determinants of COPD exacerbation in the Hokkaido COPD cohort study. Eur Respir J 43,1289-1297.
Suzuki, M., Makita, H., Konno, S., Shimizu, K., Nasuhara, Y., Nagai, K., Akiyama, Y., Fuke, S., Saito, H., Igarashi, T., et al. (2019). Annual change in FEV(1) in elderly 10-year survivors with established chronic obstructive pulmonary disease. Sci Rep 9, 2073.
Tanabe, N., Muro, S., Hirai, T., Oguma, T., Terada, K., Marumo, S., Kinose, D., Ogawa, E., Hoshino, Y., and Mishima, M. (2011). Impact of exacerbations on emphysema progression in chronic obstructive pulmonary disease. Am J Respir Crit Care Med 183, 1653-1659.
Tanimura, K., Sato, S., Fuseya, Y., Hasegawa, K., Uemasu, K., Sato, A., Oguma, T., Hirai, T., Mishima, M., and Muro, S. (2016). Quantitative Assessment of Erector Spinae Muscles in Patients with Chronic Obstructive Pulmonary Disease. Novel Chest Computed Tomography-derived Index for Prognosis. Ann Am Thorac Soc 13, 334-341.
van der Valk, R.J., Baraldi, E., Stern, G., Frey, U., and de Jongste, J.C. (2012). Daily exhaled nitric oxide measurements and asthma exacerbations in children. Allergy 67, 265-271.
Vestbo, J., Edwards, L.D., Scanlon, P.D., Yates, J.C., Agusti, A., Bakke, P., Calverley, P.M., Celli, B., Coxson, H.O., Crim, C., et al. (2011). Changes in forced expiratory volume in 1 second over time in COPD. N Engl J Med 365, 1184-1192.
Yamamoto, M., Konno, S., Makita, H., Nitta, K., Shimizu, K., Suzuki, M., Nishida, M., Sugita, J., Teshima, T., and Nishimura, M. (2021). Factors for the Variability of Three Acceptable Maximal Expiratory Flow-Volume Curves in Chronic Obstructive Pulmonary Disease. Int J Chron Obstruct Pulmon Dis 16, 415-422.