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1. Identifying Abnormal Exertional Breathlessness in COPD: Comparing Modified Medical Research Council and COPD Assessment Test With Cardiopulmonary Exercise Testing

Author

FitzGerald, J. Mark, Sin, Don D., Marciniuk, Darcy D., O’Donnell, Denis E., Hernandez, Paul, Chapman, Kenneth R., Walker, Brandie, Aaron, Shawn, Maltais, François, Samet, Jonathon, Puhan, Milo, Hamid, Qutayba, Hogg, James C., Doiron, Dany, Mancino, Palmina, Li, Pei Zhi, Jensen, Dennis, Baglole, Carolyn, Fortier, Yvan, Sin, Don, Yang, Julia, Road, Jeremy, Comeau, Joe, Png, Adrian, Johnson, Kyle, Coxson, Harvey, Leipsic, Jonathon, Hague, Cameron, Kirby, Miranda, Sadatsafavi, Mohsen, To, Teresa, Gershon, Andrea, Song, Zhi, Benedetti, Andrea, Lo, Christine, Cheng, Sarah, Un, Elena, Fung, Cynthia, Wang, Wen Tiang, Zheng, Liyun, Faroon, Faize, Radivojevic, Olga, Chung, Sally, Zou, Carl, Baril, Jacinthe, Labonte, Laura, Chapman, Kenneth, McClean, Patricia, Audisho, Nadeen, Dumonceaux, Curtis, Machado, Lisette, Fulton, Scott, Osterling, Kristen, Wigerius, Denise, Vandemheen, Kathy, Pratt, Gay, Bergeron, Amanda, O’Donnell, Denis, McNeil, Matthew, Whelan, Kate, Brouillard, Cynthia, Marciniuk, Darcy, Clemens, Ron, Baran, Janet, Leuschen, Candice, Ekström, Magnus, Lewthwaite, Hayley, Bourbeau, Jean, and Tan, Wan C.

Published
2025
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4. Abnormal Exertional Breathlessness on Cardiopulmonary Cycle Exercise Testing in Relation to Self-Reported and Physiologic Responses in Chronic Airflow Limitation

Author

Bourbeau, Jean, Tan, Wan C., FitzGerald, J. Mark, Sin, Don D., Marciniuk, Darcy D., O’Donnell, Denis E., Hernandez, Paul, Chapman, Kenneth R., Walker, Brandie, Aaron, Shawn, Maltais, François, Samet, Jonathon, Puhan, Milo, Hamid, Qutayba, Hogg, James C., Doiron, Dany, Mancino, Palmina, Li, Pei Zhi, Jensen, Dennis, Baglole, Carolyn, Fortier, Yvan, Sin, Don, Yang, Julia, Road, Jeremy, Comeau, Joe, Png, Adrian, Johnson, Kyle, Coxson, Harvey, Leipsic, Jonathon, Hague, Cameron, Kirby, Miranda, Sadatsafavi, Mohsen, To, Teresa, Gershon, Andrea, Li, Pei-Zhi, Song, Zhi, Benedetti, Andrea, Lo, Christine, Cheng, Sarah, Un, Elena, Fung, Cynthia, Wang, Wen Tiang, Zheng, Liyun, Faroon, Faize, Radivojevic, Olga, Chung, Sally, Zou, Carl, Baril, Jacinthe, Labonte, Laura, Chapman, Kenneth, McClean, Patricia, Audisho, Nadeen, Dumonceaux, Curtis, Machado, Lisette, Fulton, Scott, Osterling, Kristen, Wigerius, Denise, Vandemheen, Kathy, Pratt, Gay, Bergeron, Amanda, O’Donnell, Denis, McNeil, Matthew, Whelan, Kate, Brouillard, Cynthia, Marciniuk, Darcy, Clemens, Ron, Baran, Janet, Leuschen, Candice, Ekström, Magnus, and Lewthwaite, Hayley

Published
2024
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5. Longitudinal Association Between Muscle Loss and Mortality in Ever Smokers

Author

Mason, Stefanie E, Moreta-Martinez, Rafael, Labaki, Wassim W, Strand, Matthew J, Regan, Elizabeth A, Bon, Jessica, San Jose Estepar, Ruben, Casaburi, Richard, McDonald, Merry-Lynn, Rossiter, Harry B, Make, Barry, Dransfield, Mark T, Han, MeiLan K, Young, Kendra, Curtis, Jeffrey L, Stringer, Kathleen, Kinney, Greg, Hokanson, John E, San Jose Estepar, Raul, Washko, George R, Crapo, James D, Silverman, Edwin K, Cummings, Sara, Madden, Kelley, Make, Barry J, Nabbosa, Juliet, Port, Emily, Rashdi, Serine, Stepp, Lori, Watts, Shandi, Weaver, Michael, Beaty, Terri, Bowler, Russell P, Lynch, David A, Regan, Elizabeth, Anderson, Gary, Bleecker, Eugene R, Coxson, Harvey O, Crystal, Ronald G, Hogg, James C, Province, Michael A, Rennard, Stephen I, Croxton, Thomas, Gan, Weiniu, Postow, Lisa A, Viviano, Lisa M, Costa-Davis, Corinne, Malanga, Elisha, Prieto, Delia, Tal-Singer, Ruth, Farzadegan, Homayoon, Hadji, Akila, Sathe, Leena, Baraghoshi, David, Chen, Grace, Crooks, James, Knowles, Ruthie, Pratte, Katherine, Wilson, Carla, Zelarney, Pearlanne T, Kechris, Katerina J, Leach, Sonia, Hokanson, Co-Chair John E, Austin, Erin E, Czizik, Annika, Kinney, Gregory, Li, Yisha, Lutz, Sharon M, Ragland, Margaret F, Richmond, Nicole, Young, Kendra A, Cho, Michael, Castaldi, Peter J, Glass, Kimberly, Hersh, Craig, Kim, Wonji, Liu, Yang-Yu, Hersh, Craig P, Bidinger, Jacqueline, Cho, Michael H, Conrad, Douglas, and DeMeo, Dawn L

Subjects
Biomedical and Clinical Sciences, Clinical Sciences, Clinical Research, Nutrition, Prevention, 2.1 Biological and endogenous factors, Good Health and Well Being, Body Composition, Body Mass Index, Humans, Longitudinal Studies, Lung, Pectoralis Muscles, Pulmonary Disease, Chronic Obstructive, Smokers, COPD, mortality, muscle wasting, sarcopenia, COPDGene Investigators, Respiratory System, Cardiovascular medicine and haematology, Clinical sciences
Abstract

BackgroundBody composition measures, specifically low weight or reduced muscle mass, are associated with mortality in COPD, but the effect of longitudinal body composition changes is undefined.Research questionIs the longitudinal loss of fat-free mass (FFM) associated with increased mortality, including in those with initially normal or elevated body composition metrics?Study design and methodsParticipants with complete data for at least one visit in the COPDGene study (n = 9,268) and the ECLIPSE study (n = 1,760) were included and monitored for 12 and 8 years, respectively. Pectoralis muscle area (PMA) was derived from thoracic CT scans and used as a proxy for FFM. A longitudinal mixed submodel for PMA and a Cox proportional hazards submodel for survival were fitted on a joint distribution, using a shared random intercept parameter and Markov chain Monte Carlo parameter estimation.ResultsBoth cohorts demonstrated a left-shifted distribution of baseline FFM, not reflected in BMI, and an increase in all-cause mortality risk associated with longitudinal loss of PMA. For each 1-cm2 PMA loss, mortality increased 3.1% (95% CI, 2.4%-3.7%; P < .001) in COPDGene, and 2.4% (95% CI, 0.9%-4.0%; P < .001) in ECLIPSE. Increased mortality risk was independent of enrollment values for BMI and disease severity [BODE (body mass, airflow obstruction, dyspnea, and exercise capacity) index quartiles] and was significant even in participants with initially greater than average PMA.InterpretationLongitudinal loss of PMA is associated with increased all-cause mortality, regardless of BMI or initial muscle mass. Consideration of novel screening tests and further research into mechanisms contributing to muscle decline may improve risk stratification and identify novel therapeutic targets in ever smokers.

Published
2022

7. Normal Routine Spirometry Can Mask COPD/Emphysema in Symptomatic Smokers.

Author

Gelb, Arthur F, Yamamoto, Alfred, Verbeken, Eric K, Hogg, James C, Tashkin, Donald P, Tran, Diem NT, Moridzadeh, Roxanna M, Fraser, Christine, Schein, Mark J, Decramer, Marc, Glassy, Eric F, and Nadel, Jay A

Subjects
Biomedical and Clinical Sciences, Clinical Sciences, Chronic Obstructive Pulmonary Disease, Biomedical Imaging, Lung, Clinical Research, Tobacco Smoke and Health, Tobacco, Emphysema, Respiratory, COPD, FEF75%, emphysema, small airways obstruction, spirometry
Abstract

Recent studies have emphasized the difficulty of early detection of chronic obstructive pulmonary disease (COPD) in symptomatic smokers with normal routine spirometry. This includes post-bronchodilator normal forced expiratory volume in 1 second (FEV1)(L)≥80% predicted, forced vital capacity (FVC)(L)≥80% predicted, and FEV1/FVC ≥70% or greater than age corrected lower limit of normal (LLN). However, in COPD the pathologic site of small airway obstruction and emphysema begins in the small peripheral airways ≤2 mm id which normally contribute

Published
2021

8. Impaired Sleep Quality in COPD Is Associated With Exacerbations The CanCOLD Cohort Study

Author

Shorofsky, Matthew, Bourbeau, Jean, Kimoff, John, Jen, Rachel, Malhotra, Atul, Ayas, Najib, Tan, Wan C, Aaron, Shawn D, Sin, Don D, Road, Jeremy, Chapman, Kenneth R, O’Donnell, Denis E, Maltais, François, Hernandez, Paul, Walker, Brandie L, Marciniuk, Darcy, Kaminska, Marta, FitzGerald, J Mark, Sin, DD, Marciniuk, DD, O'Donnell, DE, Cowie, Robert, Aaron, Shawn, Maltais, F, Samet, Jonathon, Puhan, Milo, Hamid, Qutayba, Hogg, James C, Baglole, Carole, Jabet, Carole, Mancino, Palmina, Fortier, Yvan, Sin, Don, Tam, Sheena, Comeau, Joe, Png, Adrian, Coxson, Harvey, Kirby, Miranda, Leipsic, Jonathon, Hague, Cameron, Sadatsafavi, Mohsen, Gershon, Andrea, Li, Pei-Zhi, Duquette, Jean-Francois, Benedetti, Andrea, Jensen, Denis, O'Donnell, Denis, Lo, Christine, Cheng, Sarah, Fung, Cindy, Ferguson, Nancy, Haynes, Nancy, Chuang, Li, Licong, Bayat, Selva, Wong, Amanda, Alavi, Zoe, Peng, Catherine, Zhao, Bin, Scott-Hsiung, Nathalie, Nadirshaw, Tasha, Latreille, David, Baril, Jacinthe, Labonte, Laura, Chapman, Kenneth, McClean, Patricia, Audisho, Nadeen, Walker, Brandie, Cowie, Ann, Dumonceaux, Curtis, Machado, Lisette, Fulton, Scott, Osterling, Kristen, Vandemheen, Kathy, Pratt, Gay, Bergeron, Amanda, McNeil, Matthew, Whelan, Kate, Maltais, Francois, Brouillard, Cynthia, and Clemens, Ron

Subjects
Biomedical and Clinical Sciences, Cardiovascular Medicine and Haematology, Clinical Sciences, Prevention, Chronic Obstructive Pulmonary Disease, Lung, Sleep Research, Clinical Research, 6.1 Pharmaceuticals, Respiratory, Aged, Cohort Studies, Disease Progression, Dyspnea, Female, Health Services, Humans, Male, Middle Aged, Proportional Hazards Models, Prospective Studies, Pulmonary Disease, Chronic Obstructive, Sleep, Sleep Wake Disorders, Sputum, Time Factors, acute exacerbation of chronic bronchitis, COPD, sleep medicine, Canadian Respiratory Research Network, CanCOLD Collaborative Research group, Respiratory System, Cardiovascular medicine and haematology, Clinical sciences
Abstract

BackgroundCOPD increases susceptibility to sleep disturbances, which may in turn predispose to increased respiratory symptoms. The objective of this study was to evaluate, in a population-based sample, the relationship between subjective sleep quality and risk of COPD exacerbations.MethodsData were obtained from the Canadian Cohort Obstructive Lung Disease (CanCOLD) study. Participants with COPD who had completed 18 months of follow-up were included. Sleep quality was measured with the Pittsburgh Sleep Quality Index (PSQI) and a three-factor analysis. Symptom-based (dyspnea or sputum change ≥ 48 h) and event-based (symptoms plus medication or unscheduled health services use) exacerbations were assessed. Association of PSQI with exacerbation rate was assessed by using negative binomial regression. Exacerbation-free survival was also assessed.ResultsA total of 480 participants with COPD were studied, including 185 with one or more exacerbations during follow-up and 203 with poor baseline sleep quality (PSQI score > 5). Participants with subsequent symptom-based exacerbations had higher median baseline PSQI scores than those without (6.0 [interquartile range, 3.0-8.0] vs 5.0 [interquartile range, 2.0-7.0]; P = .01), and they were more likely to have baseline PSQI scores > 5 (50.3% vs 37.3%; P = .01). Higher PSQI scores were associated with increased symptom-based exacerbation risk (adjusted rate ratio, 1.09; 95% CI, 1.01-1.18; P = .02) and event-based exacerbation risk (adjusted rate ratio, 1.10; 95% CI, 1.00-1.21; P = .048). The association occurred mainly in those with undiagnosed COPD. Strongest associations were with Factor 3 (sleep disturbances and daytime dysfunction). Time to symptom-based exacerbation was shorter in participants with poor sleep quality (adjusted hazard ratio, 1.49; 95% CI, 1.09-2.03).ConclusionsHigher baseline PSQI scores were associated with increased risk of COPD exacerbation over 18 months' prospective follow-up.

Published
2019

9. COPDGene® 2019: Redefining the Diagnosis of Chronic Obstructive Pulmonary Disease.

Author

Lowe, Katherine E, Regan, Elizabeth A, Anzueto, Antonio, Austin, Erin, Austin, John HM, Beaty, Terri H, Benos, Panayiotis V, Benway, Christopher J, Bhatt, Surya P, Bleecker, Eugene R, Bodduluri, Sandeep, Bon, Jessica, Boriek, Aladin M, Boueiz, Adel Re, Bowler, Russell P, Budoff, Matthew, Casaburi, Richard, Castaldi, Peter J, Charbonnier, Jean-Paul, Cho, Michael H, Comellas, Alejandro, Conrad, Douglas, Costa Davis, Corinne, Criner, Gerard J, Curran-Everett, Douglas, Curtis, Jeffrey L, DeMeo, Dawn L, Diaz, Alejandro A, Dransfield, Mark T, Dy, Jennifer G, Fawzy, Ashraf, Fleming, Margaret, Flenaugh, Eric L, Foreman, Marilyn G, Fortis, Spyridon, Gebrekristos, Hirut, Grant, Sarah, Grenier, Philippe A, Gu, Tian, Gupta, Abhya, Han, MeiLan K, Hanania, Nicola A, Hansel, Nadia N, Hayden, Lystra P, Hersh, Craig P, Hobbs, Brian D, Hoffman, Eric A, Hogg, James C, Hokanson, John E, Hoth, Karin F, Hsiao, Albert, Humphries, Stephen, Jacobs, Kathleen, Jacobson, Francine L, Kazerooni, Ella A, Kim, Victor, Kim, Woo Jin, Kinney, Gregory L, Koegler, Harald, Lutz, Sharon M, Lynch, David A, MacIntye, Neil R, Make, Barry J, Marchetti, Nathaniel, Martinez, Fernando J, Maselli, Diego J, Mathews, Anne M, McCormack, Meredith C, McDonald, Merry-Lynn N, McEvoy, Charlene E, Moll, Matthew, Molye, Sarah S, Murray, Susan, Nath, Hrudaya, Newell, John D, Occhipinti, Mariaelena, Paoletti, Matteo, Parekh, Trisha, Pistolesi, Massimo, Pratte, Katherine A, Putcha, Nirupama, Ragland, Margaret, Reinhardt, Joseph M, Rennard, Stephen I, Rosiello, Richard A, Ross, James C, Rossiter, Harry B, Ruczinski, Ingo, San Jose Estepar, Raul, Sciurba, Frank C, Sieren, Jessica C, Singh, Harjinder, Soler, Xavier, Steiner, Robert M, Strand, Matthew J, Stringer, William W, Tal-Singer, Ruth, Thomashow, Byron, Vegas Sánchez-Ferrero, Gonzalo, and Walsh, John W

Subjects
COPD Genetic Epidemiology study, preserved ratio-impaired spirometry, COPD diagnosis, COPD diagnosis, COPDGene, GOLD, Global initiative for chronic Obstructive Lung Dis, PRISm, chronic obstructive pulmonary disease, copd, preserved ratio-impaired spirometry, spirometry, Prevention, Tobacco Smoke and Health, Tobacco, Lung, Chronic Obstructive Pulmonary Disease, Biomedical Imaging, Clinical Research, 4.2 Evaluation of markers and technologies, Detection, screening and diagnosis, 4.1 Discovery and preclinical testing of markers and technologies, Respiratory, Good Health and Well Being, COPD, COPD Genetic Epidemiology study, Global initiative for chronic Obstructive Lung Disease
Abstract

BackgroundChronic obstructive pulmonary disease (COPD) remains a major cause of morbidity and mortality. Present-day diagnostic criteria are largely based solely on spirometric criteria. Accumulating evidence has identified a substantial number of individuals without spirometric evidence of COPD who suffer from respiratory symptoms and/or increased morbidity and mortality. There is a clear need for an expanded definition of COPD that is linked to physiologic, structural (computed tomography [CT]) and clinical evidence of disease. Using data from the COPD Genetic Epidemiology study (COPDGene®), we hypothesized that an integrated approach that includes environmental exposure, clinical symptoms, chest CT imaging and spirometry better defines disease and captures the likelihood of progression of respiratory obstruction and mortality.MethodsFour key disease characteristics - environmental exposure (cigarette smoking), clinical symptoms (dyspnea and/or chronic bronchitis), chest CT imaging abnormalities (emphysema, gas trapping and/or airway wall thickening), and abnormal spirometry - were evaluated in a group of 8784 current and former smokers who were participants in COPDGene® Phase 1. Using these 4 disease characteristics, 8 categories of participants were identified and evaluated for odds of spirometric disease progression (FEV1 > 350 ml loss over 5 years), and the hazard ratio for all-cause mortality was examined.ResultsUsing smokers without symptoms, CT imaging abnormalities or airflow obstruction as the reference population, individuals were classified as Possible COPD, Probable COPD and Definite COPD. Current Global initiative for obstructive Lung Disease (GOLD) criteria would diagnose 4062 (46%) of the 8784 study participants with COPD. The proposed COPDGene® 2019 diagnostic criteria would add an additional 3144 participants. Under the new criteria, 82% of the 8784 study participants would be diagnosed with Possible, Probable or Definite COPD. These COPD groups showed increased risk of disease progression and mortality. Mortality increased in patients as the number of their COPD characteristics increased, with a maximum hazard ratio for all cause-mortality of 5.18 (95% confidence interval [CI]: 4.15-6.48) in those with all 4 disease characteristics.ConclusionsA substantial portion of smokers with respiratory symptoms and imaging abnormalities do not manifest spirometric obstruction as defined by population normals. These individuals are at significant risk of death and spirometric disease progression. We propose to redefine the diagnosis of COPD through an integrated approach using environmental exposure, clinical symptoms, CT imaging and spirometric criteria. These expanded criteria offer the potential to stimulate both current and future interventions that could slow or halt disease progression in patients before disability or irreversible lung structural changes develop.

Published
2019

10. Longitudinal Association Between Muscle Loss and Mortality in Ever Smokers

Author

Crapo, James D., Silverman, Edwin K., Cummings, Sara, Madden, Kelley, Make, Barry J., Nabbosa, Juliet, Port, Emily, Rashdi, Serine, Regan, Elizabeth A., Stepp, Lori, Watts, Shandi, Weaver, Michael, Beaty, Terri, Bowler, Russell P., Curtis, Jeffrey L., Han, MeiLan K., Hokanson, John E., Lynch, David A., Strand, Matthew J., Anderson, Gary, Bleecker, Eugene R., Coxson, Harvey O., Crystal, Ronald G., Hogg, James C., Province, Michael A., Rennard, Stephen I., Croxton, Thomas, Gan, Weiniu, Postow, Lisa A., Viviano, Lisa M., Costa-Davis, Corinne, Malanga, Elisha, Prieto, Delia, Tal-Singer, Ruth, Farzadegan, Homayoon, Hadji, Akila, Sathe, Leena, Baraghoshi, David, Chen, Grace, Crooks, James, Knowles, Ruthie, Pratte, Katherine, Wilson, Carla, Zelarney, Pearlanne T., Kechris, Katerina J., Leach, Sonia, Austin, Erin E., Czizik, Annika, Kinney, Gregory, Li, Yisha, Lutz, Sharon M., Ragland, Margaret F., Richmond, Nicole, Young, Kendra A., Cho, Michael, Castaldi, Peter J., Glass, Kimberly, Hersh, Craig, Kim, Wonji, Liu, Yang-Yu, Hersh, Craig P., Bidinger, Jacqueline, Cho, Michael H., Conrad, Douglas, DeMeo, Dawn L., El-Boueiz, Adel R., Foreman, Marilyn G., Ghosh, Auyon, Hahn, Georg, Hansel, Nadia N., Hayden, Lystra P., Hobbs, Brian, Kim, Woori, Lange, Christoph, McDonald, Merry- Lynn, McGeachie, Michael, Moll, Matthew, Morris, Melody, Patsopoulos, Nikolaos A., Qiao, Dandi, Ruczinski, Ingo, Wan, Emily S., Dy, Jennifer G., Fain, Sean B., Ginsburg, Shoshana, Hoffman, Eric A., Humphries, Stephen, Judy, Philip F., Stefanie Mason, Alex Kluiber, Oh, Andrea, Poynton, Clare, Reinhardt, Joseph M., Ross, James, San Jose Estepar, Raul, Schroeder, Joyce D., Sitek, Arkadiusz, Steiner, Robert M., van Beek, Edwin, Ginneken, Bram van, van Rikxoort, Eva, Washko, George R., Jensen, Robert, John E. Hokanson, Co-Chair, Bhatt, Surya P., Casaburi, Richard, Kim, Victor, Putcha, Nirupama, Han, MeiLan, Bon, Jessica, Diaz, Alejandro A., Regan, Elizabeth, Anzueto, Antonio, Bailey, William C., Criner, Gerard J., Dransfield, Mark T., Kinney, Greg, Sprenger, Kim, Benos, Takis, Hanania, Nicola A., Hoth, Karin F., Lambert, Allison, Lowe, Katherine, Oates, Gabriela, Parekh, Trisha, Westney, Gloria, Young, Kendra, Balasubramanian, Aparna, Boriek, Aladin, Fawzy, Ashraf, Jacobson, Francine, LaFon, David C., MacIntyre, Neil, Maselli-Caceres, Diego, McCormack, Meredith C., McDonald, Merry-Lynn, Sciurba, Frank, Soler, Xavier, Tejwani, Vickram, van Beek, Edwin JR., Wade, Raymond C., Wells, Mike, Wendt, Chris H., Yun, Jeong H., Zhang, Jingzhou, Gillenwater, Lucas, Lowe, Katherine E., Pratte, Katherine A., Ragland, Margaret, Attaway, Amy, Mason, Stefanie, Rossiter, Harry B., Saha, Punam Kumar, Wilson, Ava, Amaza, Hannatu, Baldomero, Adrienne, Mamary, A. James, O’Brien, James, Wise, Robert A., Eakin, Michelle, Fiedorowicz, Jess G., Henkle, Ben, Holm, Kristen, Iyer, Anand, Kunisaki, Ken M., McEvoy, Charlene, Mkorombindo, Takudzwa, Shinozaki, Gen, Yohannes, Abebaw, Hobbs, Brian D., Miller, Bruce E., Retson, Tara, McCloskey, Lisa, Pernicano, Perry G., Atik, Mustafa, Bertrand, Laura, Monaco, Thomas, Narendra, Dharani, Lenge de Rosen, Veronica V., Badu-Danso, Kwame, Jacobson, Francine L., Kaufman, Laura, Maguire, Cherie, Struble, Sophie, Wilson, Seth, Barr, R. Graham, Almonte, Casandra, Austin, John H.M., Gomez Blum, Maria Lorena, D’Souza, Belinda M., Florez, Emilay, Martinez, Rodney, MacIntyre, Neil, Jr., Curry, Wendy, McAdams, H. Page, Reikofski, Charlotte V., Washington, Lacey, Brown, Robert, Clare, Cheryl, Daniel, Marie, Horton, Karen, Ting “Tony” Lin, Cheng, Mirza, Tahira, Scott, Meagan, Shade, Becky, Budoff, Matt, Calmelat, Robert, Cavanaugh, Deborah, Dailing, Chris, Diaz, Leticia, Fischer, Hans, Indelicato, Renee Love, Porszasz, Janos, Soriano, April, Stringer, William, Urrutia, Miriam, Baldomero, Arianne, Bell, Brian, Deconcini, Miranda, Loes, Linda, Phelan, Jonathan, Robichaux, Camille, Sasse, Cheryl, Tashjian, Joseph H., Flenaugh, Eric L., Abson, Kema, Gebrekristos, Hirut, Johnson, Priscilla, Jordan, Jessica, Ponce, Mario, Terpenning, Silanath, Wilson, Derrick, Broadhurst, Grace, Dyer, Debra, Engel, Elena, Finigan, Jay, Hill, Andrew, Jones, Alex, Jones, Ryan, Owen, Jordan, Rosiello, Richard, Andries, Nicole, Charpentier, Mary, Kirk, Diane, Pace, David, Ciccolella, David, Cordova, Francis, Dass, Chandra, D’Alonzo, Gilbert, Davis, Valena, Desai, Parag, Fehrle, Dee, Grabianowski, Carla, Jacobs, Michael, Jameson, Laurie, Jones, Gayle M., Kelsen, Steven, Marchetti, Nathaniel, McGonagle, Francine, Satti, Aditi, Shenoy, Kartik, Sheridan, Regina, Vega-Sanchez, Maria, Wallace, Samantha, Akinseye-kolapo, Samuel, Baker, Matthew, Goggins, Arnissa, McClain, Anny, Nath, Hrudaya, Singh, Satinder P., Sonavane, Sushil K., Westfall, Elizabeth, Gil, Marissa, El Hajjaoui, Tarek, Hsiao, Albert, Martineau, Amber, Mielke, Jenna, Perez, Karl, Querido, Gabriel, Reston, Tara, Yen, Andrew, Comellas, Alejandro, Fortis, Spyridon, Galizia, Mauricio, Garcia, Eric, Keating, Janet, Laroia, Archana, Lee, Changhyun, Meyer, Amber, Mullan, Brian, Nagpal, Prashant, Ofori, Oloigbe, Suiter, Sierra, Mason, Stefanie E., Moreta-Martinez, Rafael, Labaki, Wassim W., San Jose Estepar, Ruben, Make, Barry, and Stringer, Kathleen

Published
2022
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11. Identifying Abnormal Exertional Breathlessness in COPD

Author

Ekström, Magnus, Lewthwaite, Hayley, Li, Pei Zhi, Bourbeau, Jean, Tan, Wan C., Jensen, Dennis, FitzGerald, J. Mark, Sin, Don D., Marciniuk, Darcy D., O’Donnell, Denis E., Hernandez, Paul, Chapman, Kenneth R., Walker, Brandie, Aaron, Shawn, Maltais, François, Samet, Jonathon, Puhan, Milo, Hamid, Qutayba, Hogg, James C., Doiron, Dany, Mancino, Palmina, Li, Pei Zhi, Jensen, Dennis, Baglole, Carolyn, Fortier, Yvan, Sin, Don, Yang, Julia, Road, Jeremy, Comeau, Joe, Png, Adrian, Johnson, Kyle, Coxson, Harvey, Leipsic, Jonathon, Hague, Cameron, Kirby, Miranda, Sadatsafavi, Mohsen, To, Teresa, Gershon, Andrea, Song, Zhi, Benedetti, Andrea, Jensen, Dennis, Fortier, Yvan, Kirby, Miranda, Lo, Christine, Cheng, Sarah, Un, Elena, Fung, Cynthia, Wang, Wen Tiang, Zheng, Liyun, Faroon, Faize, Radivojevic, Olga, Chung, Sally, Zou, Carl, Mancino, Palmina, Baril, Jacinthe, Labonte, Laura, Chapman, Kenneth, McClean, Patricia, Audisho, Nadeen, Walker, Brandie, Dumonceaux, Curtis, Machado, Lisette, Hernandez, Paul, Fulton, Scott, Osterling, Kristen, Wigerius, Denise, Aaron, Shawn, Vandemheen, Kathy, Pratt, Gay, Bergeron, Amanda, O’Donnell, Denis, McNeil, Matthew, Whelan, Kate, Maltais, François, Brouillard, Cynthia, Marciniuk, Darcy, Clemens, Ron, Baran, Janet, and Leuschen, Candice

Abstract

COPD management is guided by the respiratory symptom burden, assessed using the modified Medical Research Council (mMRC) scale, the COPD Assessment Test (CAT), or both.

Published
2025
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12. The transition from normal lung anatomy to minimal and established fibrosis in idiopathic pulmonary fibrosis (IPF)

Author

Xu, Feng, Tanabe, Naoya, Vasilescu, Dragos M., McDonough, John E., Coxson, Harvey O., Ikezoe, Kohei, Kinose, Daisuke, Ng, Kevin W., Verleden, Stijn E., Wuyts, Wim A., Vanaudenaerde, Bart M., Verschakelen, Johny, Cooper, Joel D., Lenburg, Marc E., Morshead, Katrina B., Abbas, Alexander R., Arron, Joseph R., Spira, Avrum, Hackett, Tillie-Louise, Colby, Thomas V., Ryerson, Christopher J., Ng, Raymond T., and Hogg, James C.

Published
2021
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13. Small airway loss in the physiologically ageing lung: a cross-sectional study in unused donor lungs

Author

Verleden, Stijn E, Kirby, Miranda, Everaerts, Stephanie, Vanstapel, Arno, McDonough, John E, Verbeken, Erik K, Braubach, Peter, Boone, Matthieu N, Aslam, Danesh, Verschakelen, Johny, Ceulemans, Laurens J, Neyrinck, Arne P, Van Raemdonck, Dirk E, Vos, Robin, Decramer, Marc, Hackett, Tillie L, Hogg, James C, Janssens, Wim, Verleden, Geert M, and Vanaudenaerde, Bart M

Published
2021
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15. Small airways pathology in idiopathic pulmonary fibrosis: a retrospective cohort study

Author

Verleden, Stijn E, Tanabe, Naoya, McDonough, John E, Vasilescu, Dragoş M, Xu, Feng, Wuyts, Wim A, Piloni, Davide, De Sadeleer, Laurens, Willems, Stijn, Mai, Cindy, Hostens, Jeroen, Cooper, Joel D, Verbeken, Erik K, Verschakelen, Johny, Galban, Craig J, Van Raemdonck, Dirk E, Colby, Thomas V, Decramer, Marc, Verleden, Geert M, Kaminski, Naftali, Hackett, Tillie-Louise, Vanaudenaerde, Bart M, and Hogg, James C

Published
2020
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16. Association between Functional Small Airway Disease and FEV1 Decline in Chronic Obstructive Pulmonary Disease.

Author

Bhatt, Surya P, Soler, Xavier, Wang, Xin, Murray, Susan, Anzueto, Antonio R, Beaty, Terri H, Boriek, Aladin M, Casaburi, Richard, Criner, Gerard J, Diaz, Alejandro A, Dransfield, Mark T, Curran-Everett, Douglas, Galbán, Craig J, Hoffman, Eric A, Hogg, James C, Kazerooni, Ella A, Kim, Victor, Kinney, Gregory L, Lagstein, Amir, Lynch, David A, Make, Barry J, Martinez, Fernando J, Ramsdell, Joe W, Reddy, Rishindra, Ross, Brian D, Rossiter, Harry B, Steiner, Robert M, Strand, Matthew J, van Beek, Edwin JR, Wan, Emily S, Washko, George R, Wells, J Michael, Wendt, Chris H, Wise, Robert A, Silverman, Edwin K, Crapo, James D, Bowler, Russell P, Han, MeiLan K, and COPDGene Investigators

Subjects
COPDGene Investigators, Respiratory System, Lung, Humans, Pulmonary Disease, Chronic Obstructive, Tomography, X-Ray Computed, Forced Expiratory Volume, Spirometry, Middle Aged, Female, Male, FEV1, lung function, parametric response mapping, Chronic Obstructive Pulmonary Disease, Clinical Research, Respiratory, Medical and Health Sciences
Abstract

RationaleThe small conducting airways are the major site of airflow obstruction in chronic obstructive pulmonary disease and may precede emphysema development.ObjectivesWe hypothesized a novel computed tomography (CT) biomarker of small airway disease predicts FEV1 decline.MethodsWe analyzed 1,508 current and former smokers from COPDGene with linear regression to assess predictors of change in FEV1 (ml/yr) over 5 years. Separate models for subjects without and with airflow obstruction were generated using baseline clinical and physiologic predictors in addition to two novel CT metrics created by parametric response mapping (PRM), a technique pairing inspiratory and expiratory CT images to define emphysema (PRM(emph)) and functional small airways disease (PRM(fSAD)), a measure of nonemphysematous air trapping.Measurements and main resultsMean (SD) rate of FEV1 decline in ml/yr for GOLD (Global Initiative for Chronic Obstructive Lung Disease) 0-4 was as follows: 41.8 (47.7), 53.8 (57.1), 45.6 (61.1), 31.6 (43.6), and 5.1 (35.8), respectively (trend test for grades 1-4; P

Published
2016

17. Impaired Sleep Quality in COPD Is Associated With Exacerbations: The CanCOLD Cohort Study

Author

Bourbeau, Jean, Tan, Wan C., FitzGerald, J. Mark, Sin, D.D., Marciniuk, D.D., O'Donnell, D.E., Hernandez, Paul, Chapman, Kenneth R., Cowie, Robert, Aaron, Shawn, Maltais, F., Samet, Jonathon, Puhan, Milo, Hamid, Qutayba, Hogg, James C., Baglole, Carole, Jabet, Carole, Mancino, Palmina, Fortier, Yvan, Sin, Don, Tam, Sheena, Road, Jeremy, Comeau, Joe, Png, Adrian, Coxson, Harvey, Kirby, Miranda, Leipsic, Jonathon, Hague, Cameron, Sadatsafavi, Mohsen, Gershon, Andrea, Li, Pei-Zhi, Duquette, Jean-Francois, Benedetti, Andrea, Jensen, Denis, O'Donnell, Denis, Lo, Christine, Cheng, Sarah, Fung, Cindy, Ferguson, Nancy, Haynes, Nancy, Chuang, Junior, Li, Licong, Bayat, Selva, Wong, Amanda, Alavi, Zoe, Peng, Catherine, Zhao, Bin, Scott-Hsiung, Nathalie, Nadirshaw, Tasha, Latreille, David, Baril, Jacinthe, Labonte, Laura, Chapman, Kenneth, McClean, Patricia, Audisho, Nadeen, Walker, Brandie, Cowie, Ann, Dumonceaux, Curtis, Machado, Lisette, Fulton, Scott, Osterling, Kristen, Vandemheen, Kathy, Pratt, Gay, Bergeron, Amanda, McNeil, Matthew, Whelan, Kate, Maltais, Francois, Brouillard, Cynthia, Marciniuk, Darcy, Clemens, Ron, Baran, Janet, Shorofsky, Matthew, Kimoff, John, Jen, Rachel, Malhotra, Atul, Ayas, Najib, Aaron, Shawn D., Sin, Don D., O’Donnell, Denis E., Maltais, François, Walker, Brandie L., and Kaminska, Marta

Published
2019
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20. Airway tree caliber heterogeneity and airflow obstruction among older adults

Author

Vameghestahbanati, Motahareh, primary, Kingdom, Leina, additional, Hoffman, Eric A., additional, Kirby, Miranda, additional, Allen, Norrina B., additional, Angelini, Elsa, additional, Bertoni, Alain, additional, Hamid, Qutayba, additional, Hogg, James C., additional, Jacobs, David R., additional, Laine, Andrew, additional, Maltais, François, additional, Michos, Erin D., additional, Sack, Coralynn, additional, Sin, Don, additional, Watson, Karol E., additional, Wysoczanksi, Artur, additional, Couper, David, additional, Cooper, Christopher, additional, Han, MeiLan, additional, Woodruff, Prescott, additional, Tan, Wan C., additional, Bourbeau, Jean, additional, Barr, R. Graham, additional, and Smith, Benjamin M., additional

Published
2024
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21. Normative Reference Equations for Breathlessness Intensity during Incremental Cardiopulmonary Cycle Exercise Testing

Author

Ekström, Magnus, primary, Li, Pei Zhi, additional, Lewthwaite, Hayley, additional, Bourbeau, Jean, additional, Tan, Wan C., additional, Schiöler, Linus, additional, Brotto, Andrew, additional, Stickland, Michael K., additional, Jensen, Dennis, additional, FitzGerald, J. Mark, additional, Sin, Don D., additional, Marciniuk, Darcy D., additional, O’Donnell, Denis E., additional, Hernandez, Paul, additional, Chapman, Kenneth R., additional, Walker, Brandie, additional, Aaron, Shawn, additional, Maltais, François, additional, Samet, Jonathon, additional, Puhan, Milo, additional, Hamid, Qutayba, additional, Hogg, James C., additional, Doiron, Dany, additional, Mancino, Palmina, additional, Baglole, Carolyn, additional, Fortier, Yvan, additional, Yang, Julia, additional, Road, Jeremy, additional, Comeau, Joe, additional, Png, Adrian, additional, Johnson, Kyle, additional, Coxson, Harvey, additional, Leipsic, Jonathon, additional, Hague, Cameron, additional, Kirby, Miranda, additional, Sadatsafavi, Mohsen, additional, To, Teresa, additional, Gershon, Andrea, additional, Song, Zhi, additional, Benedetti, Andrea, additional, Lo, Christine, additional, Cheng, Sarah, additional, Un, Elena, additional, Fung, Cynthia, additional, Wang, Wen Tiang, additional, Zheng, Liyun, additional, Faroon, Faize, additional, Radivojevic, Olga, additional, Chung, Sally, additional, Zou, Carl, additional, Baril, Jacinthe, additional, Labonte, Laura, additional, McClean, Patricia, additional, Audisho, Nadeen, additional, Dumonceaux, Curtis, additional, Machado, Lisette, additional, Fulton, Scott, additional, Osterling, Kristen, additional, Wigerius, Denise, additional, Vandemheen, Kathy, additional, Pratt, Gay, additional, Bergeron, Amanda, additional, McNeil, Matthew, additional, Whelan, Kate, additional, Brouillard, Cynthia, additional, Clemens, Ron, additional, Baran, Janet, additional, and Leuschen, Candice, additional

Published
2024
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26. Mucosal immune alterations at the early onset of tissue destruction in chronic obstructive pulmonary disease

Author

de Fays, Charlotte, primary, Geudens, Vincent, additional, Gyselinck, Iwein, additional, Kerckhof, Pieterjan, additional, Vermaut, Astrid, additional, Goos, Tinne, additional, Vermant, Marie, additional, Beeckmans, Hanne, additional, Kaes, Janne, additional, Van Slambrouck, Jan, additional, Mohamady, Yousry, additional, Willems, Lynn, additional, Aversa, Lucia, additional, Cortesi, Emanuela E., additional, Hooft, Charlotte, additional, Aerts, Gitte, additional, Aelbrecht, Celine, additional, Everaerts, Stephanie, additional, McDonough, John E., additional, De Sadeleer, Laurens J., additional, Gohy, Sophie, additional, Ambroise, Jerome, additional, Janssens, Wim, additional, Ceulemans, Laurens J., additional, Van Raemdonck, Dirk, additional, Vos, Robin, additional, Hackett, Tillie L., additional, Hogg, James C., additional, Kaminski, Naftali, additional, Gayan-Ramirez, Ghislaine, additional, Pilette, Charles, additional, and Vanaudenaerde, Bart M., additional

Published
2023
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27. The COPD Assessment Test: Can It Discriminate Across COPD Subpopulations?

Author

Bourbeau, Jean, Tan, Wan C., FitzGerald, J. Mark, Sin, D.D., Marciniuk, D.D., O'Donnell, D.E., Hernandez, Paul, Chapman, Kenneth R., Cowie, Robert, Aaron, Shawn, Maltais, F., Samet, Jonathon, Puhan, Milo, Hamid, Qutayba, Hogg, James C., Baglole, Carole, Jabet, Carole, Mancino, Palmina, Fortier, Yvan, Sin, Don, Tam, Sheena, Road, Jeremy, Comeau, Joe, Png, Adrian, Coxson, Harvey, Kirby, Miranda, Leipsic, Jonathon, Hague, Cameron, Sadatsafavi, Mohsen, To, Teresa, Gershon, Andrea, Li, Pei-Zhi, Duquette, Jean-Francois, Benedetti, Andrea, Jensen, Denis, O'Donnell, Denis, Lo, Christine, Cheng, Sarah, Fung, Cindy, Haynes, Nancy, Chuang, Junior, Zheng, Liyun, Latreille, David, Baril, Jacinthe, Labonte, Laura, Chapman, Kenneth, McClean, Patricia, Audisho, Nadeen, Cowie, Ann, Dumonceaux, Curtis, Machado, Lisette, Fulton, Scott, Osterling, Kristen, Vandemheen, Kathy, Pratt, Gay, Bergeron, Amanda, McNeil, Matthew, Whelan, Kate, Maltais, Francois, Brouillard, Cynthia, Marciniuk, Darcy, Clemens, Ron, Baran, Janet, Gupta, Nisha, Pinto, Lancelot, Li, Pei Zhi, Aaron, Shawn D., Marciniuk, Darcy D., Maltais, François, O'Donnell, Denis E., and Walker, Brandie L.

Published
2016
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30. Molecular mechanisms underlying variations in lung function: a systems genetics analysis

Author

Obeidat, Ma'en, Hao, Ke, Bossé, Yohan, Nickle, David C, Nie, Yunlong, Postma, Dirkje S, Laviolette, Michel, Sandford, Andrew J, Daley, Denise D, Hogg, James C, Elliott, W Mark, Fishbane, Nick, Timens, Wim, Hysi, Pirro G, Kaprio, Jaakko, Wilson, James F, Hui, Jennie, Rawal, Rajesh, Schulz, Holger, Stubbe, Beate, Hayward, Caroline, Polasek, Ozren, Järvelin, Marjo-Riitta, Zhao, Jing Hua, Jarvis, Deborah, Kähönen, Mika, Franceschini, Nora, North, Kari E, Loth, Daan W, Brusselle, Guy G, Smith, Albert Vernon, Gudnason, Vilmundur, Bartz, Traci M, Wilk, Jemma B, O'Connor, George T, Cassano, Patricia A, Tang, Wenbo, Wain, Louise V, Artigas, María Soler, Gharib, Sina A, Strachan, David P, Sin, Don D, Tobin, Martin D, London, Stephanie J, Hall, Ian P, and Paré, Peter D

Published
2015
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31. Supplementary Methods, Tables 2-3, Figures 1-6 from Molecular Signature of Smoking in Human Lung Tissues

Author

Bossé, Yohan, primary, Postma, Dirkje S., primary, Sin, Don D., primary, Lamontagne, Maxime, primary, Couture, Christian, primary, Gaudreault, Nathalie, primary, Joubert, Philippe, primary, Wong, Vivien, primary, Elliott, Mark, primary, van den Berge, Maarten, primary, Brandsma, Corry A., primary, Tribouley, Catherine, primary, Malkov, Vladislav, primary, Tsou, Jeffrey A., primary, Opiteck, Gregory J., primary, Hogg, James C., primary, Sandford, Andrew J., primary, Timens, Wim, primary, Paré, Peter D., primary, and Laviolette, Michel, primary

Published
2023
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32. Data from Molecular Signature of Smoking in Human Lung Tissues

Author

Bossé, Yohan, primary, Postma, Dirkje S., primary, Sin, Don D., primary, Lamontagne, Maxime, primary, Couture, Christian, primary, Gaudreault, Nathalie, primary, Joubert, Philippe, primary, Wong, Vivien, primary, Elliott, Mark, primary, van den Berge, Maarten, primary, Brandsma, Corry A., primary, Tribouley, Catherine, primary, Malkov, Vladislav, primary, Tsou, Jeffrey A., primary, Opiteck, Gregory J., primary, Hogg, James C., primary, Sandford, Andrew J., primary, Timens, Wim, primary, Paré, Peter D., primary, and Laviolette, Michel, primary

Published
2023
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33. Quantitative Imaging Metrics for the Assessment of Pulmonary Pathophysiology: An Official American Thoracic Society and Fleischner Society Joint Workshop Report

Author

Hsia, Connie C. W., primary, Bates, Jason H. T., additional, Driehuys, Bastiaan, additional, Fain, Sean B., additional, Goldin, Jonathan G., additional, Hoffman, Eric A., additional, Hogg, James C., additional, Levin, David L., additional, Lynch, David A., additional, Ochs, Matthias, additional, Parraga, Grace, additional, Prisk, G. Kim, additional, Smith, Benjamin M., additional, Tawhai, Merryn, additional, Vidal Melo, Marcos F., additional, Woods, Jason C., additional, and Hopkins, Susan R., additional

Published
2023
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34. Factors Associated with Attrition in a Longitudinal Cohort of Older Adults in the Community

Author

Katsuno, Noah, primary, Li, Pei Z., additional, Bourbeau, Jean, additional, Aaron, Shawn, additional, Maltais, Francois, additional, Hernandez, Paul, additional, Chapman, Kenneth R., additional, Walker, Brandie, additional, Marciniuk, Darcy D., additional, ODonnell, Denis D., additional, Sin, Don D., additional, Hogg, James C., additional, Cheng, Michael, additional, Road, Jeremy, additional, and Tan, Wan C., additional

Published
2023
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37. The aging lung: tissue telomere shortening in health and disease

Author

Everaerts, Stephanie, Lammertyn, Elise J., Martens, Dries S., De Sadeleer, Laurens J., Maes, Karen, van Batenburg, Aernoud A., Goldschmeding, Roel, van Moorsel, Coline H. M., Dupont, Lieven J., Wuyts, Wim A., Vos, Robin, Gayan-Ramirez, Ghislaine, Kaminski, Naftali, Hogg, James C., Janssens, Wim, Verleden, Geert M., Nawrot, Tim S., Verleden, Stijn E., McDonough, John E., and Vanaudenaerde, Bart M.

Published
2018
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41. The Role of Chest Computed Tomography in the Evaluation and Management of the Patient with Chronic Obstructive Pulmonary Disease

Author

Labaki, Wassim W., Martinez, Carlos H., Martinez, Fernando J., Galbán, Craig J., Ross, Brian D., Washko, George R., Barr, Graham R., Regan, Elizabeth A., Coxson, Harvey O., Hoffman, Eric A., Newell, John D., Jr., Curran-Everett, Douglas, Hogg, James C., Crapo, James D., Lynch, David A., Kazerooni, Ella A., and Han, MeiLan K.

Published
2017
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42. Integrative Genomics of Emphysema-Associated Genes Reveals Potential Disease Biomarkers

Author

Obeidat, Maʼen, Nie, Yunlong, Fishbane, Nick, Li, Xuan, Bossé, Yohan, Joubert, Philippe, Nickle, David C., Hao, Ke, Postma, Dirkje S., Timens, Wim, Sze, Marc A., Shannon, Casey P., Hollander, Zsuzsanna, Ng, Raymond T., McManus, Bruce, Miller, Bruce E., Rennard, Stephen, Spira, Avrum, Hackett, Tillie-Louise, Lam, Wan, Lam, Stephen, Faner, Rosa, Agusti, Alvar, Hogg, James C., Sin, Don D., and Paré, Peter D.

Published
2017
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44. A Single-Cell Atlas of Small Airway Disease in Chronic Obstructive Pulmonary Disease: A Cross-Sectional Study.

Author

Booth, Steven, Hsieh, Aileen, Mostaco-Guidolin, Leila, Hyun-Kyoung Koo, Wu, Keith, Aminazadeh, Fatemeh, Chen Xi Yang, Quail, Daniela, Yuhong Wei, Cooper, Joel D., Paré1, Peter D., Hogg, James C., Vasilescu, Dragoş M., and Hackett, Tillie-Louise

Subjects
CHRONIC obstructive pulmonary disease, OBSTRUCTIVE lung diseases, AIRWAY resistance (Respiration), RESPIRATORY mechanics, CROSS-sectional method
Abstract

Rationale: Emerging data demonstrate that the smallest conducting airways, terminal bronchioles, are the early site of tissue destruction in chronic obstructive pulmonary disease (COPD) and are reduced by as much as 41% by the time someone is diagnosed with mild (Global Initiative for Chronic Obstructive Lung Disease [GOLD] stage 1) COPD. Objectives: To develop a single-cell atlas that describes the structural, cellular, and extracellular matrix alterations underlying terminal bronchiole loss in COPD. Methods: This cross-sectional study of 262 lung samples derived from 34 ex-smokers with normal lung function (n = 10) or GOLD stage 1 (n = 10), stage 2 (n = 8), or stage 4 (n = 6) COPD was performed to assess the morphology, extracellular matrix, single-cell atlas, and genes associated with terminal bronchiole reduction using stereology, micro-computed tomography, nonlinear optical microscopy, imaging mass spectrometry, and transcriptomics. Measurements and Main Results: The lumen area of terminal bronchioles progressively narrows with COPD severity as a result of the loss of elastin fibers within alveolar attachments, which was observed before microscopic emphysematous tissue destruction in GOLD stage 1 and 2 COPD. The single-cell atlas of terminal bronchioles in COPD demonstrated M1-like macrophages and neutrophils located within alveolar attachments and associated with the pathobiology of elastin fiber loss, whereas adaptive immune cells (naive, CD4, and CD8 T cells, and B cells) are associated with terminal bronchiole wall remodeling. Terminal bronchiole pathology was associated with the upregulation of genes involved in innate and adaptive immune responses, the interferon response, and the degranulation of neutrophils. Conclusions: This comprehensive single-cell atlas highlights terminal bronchiole alveolar attachments as the initial site of tissue destruction in centrilobular emphysema and an attractive target for disease modification. [ABSTRACT FROM AUTHOR]

Published
2023
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45. Hedgehog Signaling as a Therapeutic Target for Airway Remodeling and Inflammation in Allergic Asthma

Author

Tam, Anthony, primary, Osei, Emmanuel Twumasi, additional, Cheung, Chung Y., additional, Hughes, Michael, additional, Yang, Chen X., additional, McNagny, Kelly M., additional, Dorscheid, Delbert R., additional, Singhera, Gurpreet K., additional, Hallstrand, Teal S., additional, Warner, Stephanie, additional, Hogg, James C., additional, Hackett, Tillie L., additional, Lim, Chinten J., additional, and Sin, Don D., additional

Published
2022
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47. Ambient Air Pollution and Dysanapsis: Associations with Lung Function and Chronic Obstructive Pulmonary Disease in the Canadian Cohort Obstructive Lung Disease Study

Author

Bourbeau, Jean, primary, Doiron, Dany, additional, Biswas, Sharmistha, additional, Smith, Benjamin M., additional, Benedetti, Andrea, additional, Brook, Jeffrey R., additional, Aaron, Shawn D., additional, Chapman, Kenneth R., additional, Hernandez, Paul, additional, Maltais, François, additional, Marciniuk, Darcy D., additional, O’Donnell, Denis, additional, Sin, Don D., additional, Walker, Brandie, additional, Dsilva, Liesel, additional, Nadeau, Gilbert, additional, Coats, Valérie, additional, Compton, Chris, additional, Miller, Bruce E., additional, Tan, Wan C., additional, Bourbeau, Jean, additional, FitzGerald, J. Mark, additional, O’Donnell, Denis E., additional, Aaron, Shawn, additional, Samet, Jonathon, additional, Puhan, Milo, additional, Hamid, Qutayba, additional, Hogg, James C., additional, Mancino, Palmina, additional, Li, Pei Zhi, additional, Jensen, Dennis, additional, Baglole, Carolyn, additional, Fortier, Yvan, additional, Yang, Julia, additional, Road, Jeremy, additional, Comeau, Joe, additional, Png, Adrian, additional, Johnson, Kyle, additional, Coxson, Harvey, additional, Kirby, Miranda, additional, Leipsic, Jonathon, additional, Hague, Cameron, additional, Sadatsafavi, Mohsen, additional, To, Teresa, additional, Gershon, Andrea, additional, Song, Zhi, additional, Lo, Christine, additional, Cheng, Sarah, additional, Un, Elena, additional, Fung, Cynthia, additional, Wang, Wen Tiang, additional, Zheng, Liyun, additional, Faroon, Faize, additional, Radivojevic, Olga, additional, Chung, Sally, additional, Zou, Carl, additional, Baril, Jacinthe, additional, Labonté, Laura, additional, McClean, Patricia, additional, Audisho, Nadeen, additional, Dumonceaux, Curtis, additional, Machado, Lisette, additional, Fulton, Scott, additional, Osterling, Kristen, additional, Wigerius, Denise, additional, Vandemheen, Kathy, additional, Pratt, Gay, additional, Bergeron, Amanda, additional, Vincent, Sandra, additional, McNeil, Matthew, additional, Whelan, Kate, additional, Brouillard, Cynthia, additional, Clemens, Ron, additional, Baran, Janet, additional, and Leuschen, Candice, additional

Published
2022
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50. Impaired Ventilatory Efficiency, Dyspnea, and Exercise Intolerance in Chronic Obstructive Pulmonary Disease: Results from the CanCOLD Study

Author

Phillips, Devin B., primary, Elbehairy, Amany F., additional, James, Matthew D., additional, Vincent, Sandra G., additional, Milne, Kathryn M., additional, de-Torres, Juan P., additional, Neder, J. Alberto, additional, Kirby, Miranda, additional, Jensen, Dennis, additional, Stickland, Michael K., additional, Guenette, Jordan A., additional, Smith, Benjamin M., additional, Aaron, Shawn D., additional, Tan, Wan C., additional, Bourbeau, Jean, additional, O’Donnell, Denis E., additional, Samet, Jonathon, additional, Puhan, Milo, additional, Hogg, James C., additional, Hamid, Qutayba, additional, Doiron, Dany, additional, Mancino, Palmina, additional, Li, Pei-Zhi, additional, Song, Zhi, additional, Fortier, Yvan, additional, Chapman, Kenneth, additional, McClean, Patricia, additional, Duke, Jane, additional, Gershon, Andrea S., additional, Toh, Teresa, additional, Sadatsafavi, Mohsen, additional, Sin, Don, additional, Fitzgerald, J. Mark, additional, Road, Jeremy, additional, Lo, Christine, additional, Cheng, Sarah, additional, Un, Elena, additional, Cheng, Michael, additional, Fung, Cynthia, additional, Faroon, Faize, additional, Radivojevic, Olga, additional, Chung, Sally, additional, Zou, Carl, additional, Choi, Rena, additional, Comeau, Joe, additional, Coxson, Harvey, additional, Leipsic, Jonathon, additional, Hague, Cameron, additional, Walker, Brandie, additional, Dumonceaux, Curtis, additional, Hernandez, Paul, additional, Fulton, Scott, additional, Vandemheen, Kathy, additional, McNeil, Matthew, additional, Whelan, Kate, additional, Maltais, Francois, additional, Brouillard, Cynthia, additional, Marciniuk, Darcy, additional, Clemens, Ron, additional, and Baran, Janet, additional

Published
2022
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