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Pulmonary graft-versus-host disease and chronic lung allograft dysfunction: two sides of the same coin? THE LANCET RESPIRATORY MEDICINE 2022; 10:796-810. [DOI: 10.1016/s2213-2600(22)00001-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/17/2021] [Accepted: 01/04/2022] [Indexed: 11/23/2022]
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2
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Quantitative CT Correlates with Local Inflammation in Lung of Patients with Subtypes of Chronic Lung Allograft Dysfunction. Cells 2022; 11:cells11040699. [PMID: 35203345 PMCID: PMC8870691 DOI: 10.3390/cells11040699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/08/2022] [Accepted: 02/11/2022] [Indexed: 02/03/2023] Open
Abstract
Chronic rejection of lung allografts has two major subtypes, bronchiolitis obliterans syndrome (BOS) and restrictive allograft syndrome (RAS), which present radiologically either as air trapping with small airways disease or with persistent pleuroparenchymal opacities. Parametric response mapping (PRM), a computed tomography (CT) methodology, has been demonstrated as an objective readout of BOS and RAS and bears prognostic importance, but has yet to be correlated to biological measures. Using a topological technique, we evaluate the distribution and arrangement of PRM-derived classifications of pulmonary abnormalities from lung transplant recipients undergoing redo-transplantation for end-stage BOS (N = 6) or RAS (N = 6). Topological metrics were determined from each PRM classification and compared to structural and biological markers determined from microCT and histopathology of lung core samples. Whole-lung measurements of PRM-defined functional small airways disease (fSAD), which serves as a readout of BOS, were significantly elevated in BOS versus RAS patients (p = 0.01). At the core-level, PRM-defined parenchymal disease, a potential readout of RAS, was found to correlate to neutrophil and collagen I levels (p < 0.05). We demonstrate the relationship of structural and biological markers to the CT-based distribution and arrangement of PRM-derived readouts of BOS and RAS.
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Kuroi T, Fujii N, Ichimura K, Seike K, Yamamoto A, Kambara Y, Sugimoto S, Otani S, Saeki K, Fujiwara H, Nishiomori H, Oto T, Maeda Y. Characterization of localized macrophages in bronchiolitis obliterans after allogeneic hematopoietic cell transplantation. Int J Hematol 2021; 114:701-708. [PMID: 34494183 DOI: 10.1007/s12185-021-03214-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 08/27/2021] [Accepted: 08/30/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Bronchiolitis obliterans syndrome (BOS) remains one of the most devastating manifestations of chronic graft-versus-host disease in hematopoietic cell transplantation (HCT). Recent findings of BOS after lung transplantation indicate that donor (lung)-derived lung-resident macrophages contribute to BOS, suggesting that differences in the origin of immune cells and localized antigen-presenting cells cause the onset of BOS. METHODS We identified the phenotype and origin of infiltrating macrophages using immunohistochemistry and fluorescence in situ hybridization in eight sex-mismatched HCT recipients who underwent lung transplantation for BOS after HCT. RESULTS Most of the infiltrating macrophages appeared to be derived from donor (hematopoietic) cells in patients who developed BOS following HCT. Macrophages observed in the early-stage region of BOS were positive for cluster of differentiation (CD)68 and inducible nitric oxide synthase (iNOS) and negative for CD163 and CD206, suggesting an M1 phenotype. In the late-stage region, macrophages were negative for CD68 and iNOS in all patients, but also positive for CD163 and CD206 in some patients. CONCLUSIONS Donor-derived M1-macrophages may be involved in the pathogenesis of the early-stage region of BOS. In addition, some macrophages in the late-stage region showed M2 polarization that might be involved in fibrosis.
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Affiliation(s)
- Taiga Kuroi
- Department of Hematology and Oncology, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Nobuharu Fujii
- Department of Hematology and Oncology, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan. .,Division of Transfusion, Okayama University Hospital, Okayama, Japan.
| | - Koichi Ichimura
- Department of Pathology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Keisuke Seike
- Department of Hematology and Oncology, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan.,Division of Transfusion, Okayama University Hospital, Okayama, Japan
| | - Akira Yamamoto
- Department of Hematology and Oncology, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Yui Kambara
- Department of Hematology and Oncology, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Seiichiro Sugimoto
- Department of Organ Transplant Center, Okayama University Hospital, Okayama, Japan
| | - Shinji Otani
- Department of Organ Transplant Center, Okayama University Hospital, Okayama, Japan
| | - Kyosuke Saeki
- Department of Hematology and Oncology, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Hideaki Fujiwara
- Department of Hematology and Oncology, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Hisakazu Nishiomori
- Department of Hematology and Oncology, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Takahiro Oto
- Department of Organ Transplant Center, Okayama University Hospital, Okayama, Japan
| | - Yoshinobu Maeda
- Department of Hematology and Oncology, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan.,Department of Hematology and Oncology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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4
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Rozenberg D, McInnis M, Chow CW. Utilizing Automated Radiographic Signatures to Prognosticate Chronic Lung Allograft Dysfunction: What Does the Future Hold? Am J Respir Crit Care Med 2021; 204:883-885. [PMID: 34384039 PMCID: PMC8534617 DOI: 10.1164/rccm.202107-1726ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Dmitry Rozenberg
- University Health Network, 7989, Medicine, Respirology and Lung Transplantation , Toronto, Ontario, Canada;
| | - Micheal McInnis
- University Health Network, 7989, Joint Department of Medical Imaging, Toronto, Ontario, Canada
| | - Chung-Wai Chow
- University of Toronto, 7938, Medicine, Toronto, Ontario, Canada
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5
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Belloli EA, Gu T, Wang Y, Vummidi D, Lyu DM, Combs MP, Chughtai A, Murray S, Galbán CJ, Lama VN. Radiographic Graft Surveillance in Lung Transplantation: Prognostic Role of Parametric Response Mapping. Am J Respir Crit Care Med 2021; 204:967-976. [PMID: 34319850 DOI: 10.1164/rccm.202012-4528oc] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Chronic lung allograft dysfunction (CLAD) results in significant morbidity following lung transplantation. Potential CLAD occurs when lung function declines to 80-90% of baseline. Better non-invasive tools to prognosticate at potential CLAD are needed. OBJECTIVES To determine if parametric response mapping (PRM), a CT voxel-wise methodology, applied to high resolution CT scans can identify patients at risk of progression to CLAD or death. METHODS Radiographic features and PRM-based CT metrics quantifying functional small airways disease (PRMfSAD) and parenchymal disease (PRMPD) were studied at potential CLAD (n=61). High PRMfSAD and high PRMPD were defined as ≥ 30%. Restricted mean modeling was performed to compare CLAD-free survival among groups. MEASUREMENTS AND MAIN RESULTS PRM metrics identified 3 unique signatures: high PRMfSAD (11.5%), high PRMPD (41%) and neither (PRMNormal; 47.5%). Patients with high PRMfSAD or PRMPD had shorter CLAD-free median survival times (0.46 years and 0.50 years) compared to patients with predominantly PRMNormal (2.03 years; p=0.004 and 0.007 compared to PRMfSAD and PRMPD groups, respectively). In multivariate modeling adjusting for single versus double lung transplant, age at transplant, BMI at potential CLAD, and time from transplant to CT, PRMfSAD or PRMPD ≥ 30% continue to be statistically significant predictors of shorter CLAD-free survival. Air trapping by radiologist interpretation was common (66%), similar across PRM groups, and was not predictive of CLAD-free survival. Ground glass opacities by radiologist read occurred in 16% of cases and was associated with decreased CLAD-free survival (p<0.001). CONCLUSIONS PRM analysis offers valuable prognostic information at potential CLAD, identifying patients most at risk of developing CLAD or death.
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Affiliation(s)
- Elizabeth A Belloli
- University of Michigan, Pulmonary & Critical Care Medicine, Ann Arbor, Michigan, United States;
| | - Tian Gu
- University of Michigan, Biostatistics, Ann Arbor, Michigan, United States
| | - Yizhuo Wang
- University of Michigan School of Public Health, 51329, Biostatistics, Ann Arbor, Michigan, United States
| | - Dharshan Vummidi
- University of Michigan, Radiology, Ann Arbor, Michigan, United States
| | - Dennis M Lyu
- University of Michigan, Internal Medicine, Division Pulmonary & Critical Care, Ann Arbor, Michigan, United States
| | - Michael P Combs
- University of Michigan, Internal Medicine, Ann Arbor, Michigan, United States
| | - Aamer Chughtai
- University of Michigan, Radiology, Ann Arbor, Michigan, United States
| | - Susan Murray
- University of Michigan, School of Public Health, Biostatistics, Ann Arbor, Michigan, United States
| | - Craig J Galbán
- Center for Molecular Imaging, Michigan, Michigan, United States
| | - Vibha N Lama
- University of Michigan, 1259, Pulmonary and Critical Care Medicine, Ann Arbor, Michigan, United States
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6
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Amubieya O, Ramsey A, DerHovanessian A, Fishbein GA, Lynch JP, Belperio JA, Weigt SS. Chronic Lung Allograft Dysfunction: Evolving Concepts and Therapies. Semin Respir Crit Care Med 2021; 42:392-410. [PMID: 34030202 DOI: 10.1055/s-0041-1729175] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The primary factor that limits long-term survival after lung transplantation is chronic lung allograft dysfunction (CLAD). CLAD also impairs quality of life and increases the costs of medical care. Our understanding of CLAD continues to evolve. Consensus definitions of CLAD and the major CLAD phenotypes were recently updated and clarified, but it remains to be seen whether the current definitions will lead to advances in management or impact care. Understanding the potential differences in pathogenesis for each CLAD phenotype may lead to novel therapeutic strategies, including precision medicine. Recognition of CLAD risk factors may lead to earlier interventions to mitigate risk, or to avoid risk factors all together, to prevent the development of CLAD. Unfortunately, currently available therapies for CLAD are usually not effective. However, novel therapeutics aimed at both prevention and treatment are currently under investigation. We provide an overview of the updates to CLAD-related terminology, clinical phenotypes and their diagnosis, natural history, pathogenesis, and potential strategies to treat and prevent CLAD.
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Affiliation(s)
- Olawale Amubieya
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Allison Ramsey
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Ariss DerHovanessian
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Gregory A Fishbein
- Department of Pathology, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Joseph P Lynch
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - John A Belperio
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - S Samuel Weigt
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
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7
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Kitko CL, Pidala J, Schoemans HM, Lawitschka A, Flowers ME, Cowen EW, Tkaczyk E, Farhadfar N, Jain S, Steven P, Luo ZK, Ogawa Y, Stern M, Yanik GA, Cuvelier GDE, Cheng GS, Holtan SG, Schultz KR, Martin PJ, Lee SJ, Pavletic SZ, Wolff D, Paczesny S, Blazar BR, Sarantopoulos S, Socie G, Greinix H, Cutler C. National Institutes of Health Consensus Development Project on Criteria for Clinical Trials in Chronic Graft-versus-Host Disease: IIa. The 2020 Clinical Implementation and Early Diagnosis Working Group Report. Transplant Cell Ther 2021; 27:545-557. [PMID: 33839317 PMCID: PMC8803210 DOI: 10.1016/j.jtct.2021.03.033] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 03/31/2021] [Indexed: 12/11/2022]
Abstract
Recognition of the earliest signs and symptoms of chronic graft-versus-host disease (GVHD) that lead to severe manifestations remains a challenge. The standardization provided by the National Institutes of Health (NIH) 2005 and 2014 consensus projects has helped improve diagnostic accuracy and severity scoring for clinical trials, but utilization of these tools in routine clinical practice is variable. Additionally, when patients meet the NIH diagnostic criteria, many already have significant morbidity and possibly irreversible organ damage. The goals of this early diagnosis project are 2-fold. First, we provide consensus recommendations regarding implementation of the current NIH diagnostic guidelines into routine transplant care, outside of clinical trials, aiming to enhance early clinical recognition of chronic GVHD. Second, we propose directions for future research efforts to enable discovery of new, early laboratory as well as clinical indicators of chronic GVHD, both globally and for highly morbid organ-specific manifestations. Identification of early features of chronic GVHD that have high positive predictive value for progression to more severe manifestations of the disease could potentially allow for future pre-emptive clinical trials.
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Affiliation(s)
- Carrie L Kitko
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee.
| | - Joseph Pidala
- Blood and Marrow Transplantation and Cellular Immunotherapy, Moffitt Cancer Center, Tampa, Florida
| | - Hélène M Schoemans
- Department of Hematology, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Anita Lawitschka
- St. Anna Children's Hospital, Children's Cancer Research Institute, Vienna, Austria
| | - Mary E Flowers
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Medicine, University of Washington, Seattle, Washington
| | - Edward W Cowen
- Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland
| | - Eric Tkaczyk
- Research & Dermatology Services, Department of Veterans Affairs, Nashville, Tennessee; Vanderbilt Dermatology Translational Research Clinic, Department of Dermatology, Vanderbilt University Medical Center, Nashville, Tennessee; Vanderbilt-Ingram Cancer Center, Nashville, Tennessee
| | - Nosha Farhadfar
- Division of Hematology/Oncology, University of Florida College of Medicine, Gainesville, Florida
| | - Sandeep Jain
- Department of Ophthalmology, University of Illinois at Chicago, Chicago, Illinois
| | - Philipp Steven
- Division for Dry-Eye Disease and Ocular GVHD, Department of Ophthalmology, Medical Faculty and University Hospital, University of Cologne, Cologne, Germany
| | - Zhonghui K Luo
- Department of Ophthalmology, Massachusetts Eye and Ear, Harvard University, Boston, Massachusetts
| | - Yoko Ogawa
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Michael Stern
- Department of Ophthalmology, University of Illinois at Chicago, Chicago, Illinois; ImmunEyez LLC, Irvine, California
| | - Greg A Yanik
- Department of Pediatrics, University of Michigan, Ann Arbor, Michigan
| | - Geoffrey D E Cuvelier
- Pediatric Blood and Marrow Transplantation, Department of Pediatric Oncology-Hematology-BMT, CancerCare Manitoba, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Guang-Shing Cheng
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Medicine, University of Washington, Seattle, Washington
| | - Shernan G Holtan
- Division of Hematology, Oncology, and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
| | - Kirk R Schultz
- Pediatric Hematology/Oncology/BMT, BC Children's Hospital, Vancouver, British Columbia, Canada
| | - Paul J Martin
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Medicine, University of Washington, Seattle, Washington
| | - Stephanie J Lee
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Medicine, University of Washington, Seattle, Washington
| | - Steven Z Pavletic
- Center for Cancer Research, National Cancer Institute, Bethesda, Maryland
| | - Daniel Wolff
- Department of Internal Medicine III, University Hospital of Regensburg, Regensburg, Germany
| | - Sophie Paczesny
- Department of Microbiology and Immunology, Department of Pediatrics, Medical University of South Carolina, Charleston, South Carolina
| | - Bruce R Blazar
- Department of Pediatrics, Division of Blood & Marrow Transplantation & Cellular Therapy, University of Minnesota, Minneapolis, Minnesota
| | - Stephanie Sarantopoulos
- Division of Hematological Malignancies and Cellular Therapy, Duke University Department of Medicine, Duke Cancer Institute, Durham, North Carolina
| | - Gerard Socie
- Hematology Transplantation, AP-HP Saint Louis Hospital & University of Paris, INSERM U976, Paris, France
| | - Hildegard Greinix
- Clinical Division of Hematology, Medical University of Graz, Graz, Austria
| | - Corey Cutler
- Division of Stem Cell Transplantation and Cellular Therapy, Dana-Farber Cancer Institute, Boston, Massachusetts
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8
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Tian D, Huang H, Wen HY. Noninvasive methods for detection of chronic lung allograft dysfunction in lung transplantation. Transplant Rev (Orlando) 2020; 34:100547. [PMID: 32498976 DOI: 10.1016/j.trre.2020.100547] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/15/2020] [Accepted: 04/16/2020] [Indexed: 02/05/2023]
Abstract
Lung transplantation (LTx) is the only therapeutic option for end-stage lung diseases. Chronic lung allograft dysfunction (CLAD), which manifests as airflow restriction and/or obstruction, is the primary factor limiting the long-term survival of patients after surgery. According to histopathological and radiographic findings, CLAD comprises two phenotypes, bronchiolitis obliterans syndrome and restrictive allograft syndrome. Half of all lung recipients will develop CLAD in 5 years, and this rate may increase up to 75% 10 years after surgery owing to the paucity in accurate and effective early detection and treatment methods. Recently, many studies have presented noninvasive methods for detecting CLAD and improving diagnosis and intervention. However, the significance of accurately detecting CLAD remains controversial. We reviewed published studies that have presented noninvasive methods for detecting CLAD to highlight the current knowledge on clinical symptoms, spirometry, imaging examinations, and other methods to detect the disease.
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Affiliation(s)
- Dong Tian
- Department of Thoracic Surgery, The University of Tokyo Graduate School of Medicine, Tokyo, Japan; Department of Thoracic Surgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China; Department of Thoracic Surgery, West China Hospital, West China Hospital, Sichuan University, Chengdu, China.
| | - Heng Huang
- Department of Thoracic Surgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - Hong-Ying Wen
- Department of Thoracic Surgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
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9
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Jamani K, He Q, Liu Y, Davis C, Hubbard J, Schoch G, Lee SJ, Gooley T, Flowers MED, Cheng GS. Early Post-Transplantation Spirometry Is Associated with the Development of Bronchiolitis Obliterans Syndrome after Allogeneic Hematopoietic Cell Transplantation. Biol Blood Marrow Transplant 2019; 26:943-948. [PMID: 31821885 DOI: 10.1016/j.bbmt.2019.12.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 12/11/2022]
Abstract
Bronchiolitis obliterans syndrome (BOS) after allogeneic hematopoietic cell transplantation (allo-HCT) is often diagnosed at a late stage when lung dysfunction is severe and irreversible. Identifying patients early after transplantation may offer improved strategies for early detection that could avert the morbidity and mortality of BOS. This study aimed to determine whether a decline in lung function before and early after (days +80 to +100) allo-HCT are associated with a risk of BOS beyond 6 months post-transplantation. In a single-center cohort of 2941 allo-HCT recipients, 186 (6%) met National Institutes of Health criteria for BOS. Pretransplantation and post-transplantation day +80 spirometric parameters were analyzed as continuous variables and included in a multivariable model with other factors, including donor source, graft source, conditioning regimen, use of total body irradiation, and immunoglobulin levels. Pre-transplantation forced expiratory flow between 25% and 75% of maximum (FEF25-75), day +80 forced expiratory volume in 1 second (FEV1), and day +80 FEF25-75 had the strongest associations with increased risk of BOS. Assessment of the multivariable model showed that a decline in day +80 FEF25-75 added additional risk to the day +80 FEV1 model (P = .03), whereas FEV1 decline at day +80 added no additional risk to the day +80 FEF25-75 model (P = .645). Moreover, day +80 FEF25-75 conferred additional risk when considered with pretransplantation FEF25-75. These results suggest that day +80 FEF25-75 may be more important than FEV1 in predicting the development of BOS. This study highlights the importance of obtaining early post-transplantation pulmonary function tests for the potential risk stratification of patients at risk for BOS.
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Affiliation(s)
- Kareem Jamani
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Qianchuan He
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Yang Liu
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Chris Davis
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Jesse Hubbard
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Gary Schoch
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Stephanie J Lee
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Division of Hematology and Oncology, University of Washington, Seattle, Washington
| | - Ted Gooley
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Mary E D Flowers
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Division of Hematology and Oncology, University of Washington, Seattle, Washington
| | - Guang-Shing Cheng
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, Washington.
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10
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Lung Density Analysis Using Quantitative Chest CT for Early Prediction of Chronic Lung Allograft Dysfunction. Transplantation 2019; 103:2645-2653. [DOI: 10.1097/tp.0000000000002771] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Lung Function Trajectory in Bronchiolitis Obliterans Syndrome after Allogeneic Hematopoietic Cell Transplant. Ann Am Thorac Soc 2017; 13:1932-1939. [PMID: 27513368 DOI: 10.1513/annalsats.201604-262oc] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
RATIONALE The natural history of lung function in patients with bronchiolitis obliterans syndrome (BOS) after allogeneic hematopoietic cell transplant is poorly characterized. Understanding the trajectory of lung function is necessary for prompt clinical recognition and treatment and also for the rational design of prospective studies. OBJECTIVES To describe the longitudinal trajectory of lung function parameters, including FEV1, in patients with BOS after hematopoietic cell transplant. METHODS Subjects with BOS defined by National Institutes of Health consensus guidelines criteria from a recent multicenter prospective trial of combination treatment with fluticasone, azithromycin and montelukast and a retrospective cohort from Fred Hutchinson Cancer Research Center were included. Longitudinal change in FEV1 for each patient was calculated on the basis of available pulmonary function tests in three periods: pre-BOS, from BOS diagnosis to 6 months, and 6-18 months after diagnosis. The effect of treatment on FEV1 trajectory was analyzed by univariate and multivariate linear regression. The Kaplan-Meier method was used to estimate survival. MEASUREMENTS AND MAIN RESULTS The FEV1 percent predicted value at diagnosis was 46% (interquartile range, 35-57%) for trial participants and 53% (interquartile range, 41-64%) for the retrospective cohort. There was a concomitant mild reduction in FVC, as well as a marked reduction in forced expiratory flow, midexpiratory phase, at diagnosis. While there was individual heterogeneity, the overall FEV1 trajectory was characterized by a marked decline within 6 months prior to BOS diagnosis, followed by stability of FEV1 early after diagnosis and a slow rate of decline beyond 6 months. The effect of the trial medications on FEV1 trajectory after BOS diagnosis was a mean rate of change of 0.92% predicted per month (95% confidence interval, -0.53 to 2.37) compared with the retrospective cohort, but this was not statistically significant. Two-year overall survival rates were 76% and 72% for the study participants and the retrospective cohort patients, respectively. Earlier time to diagnosis after hematopoietic cell transplant and severity of FVC at diagnosis were significantly associated with reduced survival. CONCLUSIONS The FEV1 trajectory in patients with BOS after hematopoietic cell transplant in a contemporary era of management follows a predominant pattern of rapid FEV1 decline in the 6 months prior to diagnosis, followed by FEV1 stabilization after diagnosis.
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12
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Abstract
Chronic lung allograft dysfunction (CLAD) is the major limitation to posttransplant survival. This review highlights the evolving definition of CLAD, risk factors, treatment, and expected outcomes after the development of CLAD.
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13
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Ciaramelli C, Fumagalli M, Viglio S, Bardoni AM, Piloni D, Meloni F, Iadarola P, Airoldi C. 1H NMR To Evaluate the Metabolome of Bronchoalveolar Lavage Fluid (BALf) in Bronchiolitis Obliterans Syndrome (BOS): Toward the Development of a New Approach for Biomarker Identification. J Proteome Res 2017; 16:1669-1682. [PMID: 28245130 DOI: 10.1021/acs.jproteome.6b01038] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This report describes the application of NMR spectroscopy to the profiling of metabolites in bronchoalveolar lavage fluid (BALf) of lung transplant recipients without bronchiolitis obliterans syndrome (BOS) (stable, S, n = 10), and with BOS at different degrees of severity (BOS 0p, n = 10; BOS I, n = 10). Through the fine-tuning of a number of parameters concerning both sample preparation/processing and variations of spectra acquisition modes, an efficient and reproducible protocol was designed for the screening of metabolites in a pulmonary fluid that should reflect the status of airway inflammation/injury. Exploiting the combination of mono- and bidimensional NMR experiments, 38 polar metabolites, including amino acids, Krebs cycle intermediates, mono- and disaccharides, nucleotides, and phospholipid precursors, were unequivocally identified. To determine which signature could be correlated with the onset of BOS, the metabolites' content of the above recipients was analyzed by multivariate (PCA and OPLS-DA) statistical methods. PCA analysis (almost) totally differentiated S from BOS I, and this discrimination was significantly improved by the application of OPLS-DA, whose model was characterized by excellent fit and prediction values (R2 = 0.99 and Q2 = 0.88). The analysis of S vs BOS 0p and of BOS 0p vs BOS I samples showed a clear discrimination of considered cohorts, although with a poorer efficiency compared to those measured for S vs BOS I patients. The data shown in this work assess the suitability of the NMR approach in monitoring different pathological lung conditions.
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Affiliation(s)
- Carlotta Ciaramelli
- Department of Biotechnology and Biosciences, University of Milano-Bicocca , 20126 Milan, Italy
| | | | | | | | - Davide Piloni
- IRCCS Foundation Policlinico San Matteo , Department of Cardiothoracic and Vascular Department, Pneumology Unit, Pavia 27100, Italy
| | - Federica Meloni
- IRCCS Foundation Policlinico San Matteo , Department of Cardiothoracic and Vascular Department, Pneumology Unit, Pavia 27100, Italy
| | | | - Cristina Airoldi
- Department of Biotechnology and Biosciences, University of Milano-Bicocca , 20126 Milan, Italy
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Fujimoto H, Kobayashi T, Azuma A. Idiopathic Pulmonary Fibrosis: Treatment and Prognosis. CLINICAL MEDICINE INSIGHTS-CIRCULATORY RESPIRATORY AND PULMONARY MEDICINE 2016; 9:179-185. [PMID: 27980445 PMCID: PMC5147432 DOI: 10.4137/ccrpm.s23321] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 10/02/2016] [Accepted: 10/08/2016] [Indexed: 12/19/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic progressive lung disease with a prognosis that can be worse than for many cancers. The initial stages of the condition were thought to mainly involve chronic inflammation; therefore, corticosteroids and other drugs that have anti-inflammatory and immunosuppressive actions were used. However, recently, agents targeting persistent fibrosis resulting from aberrant repair of alveolar epithelial injury have been in the spotlight. There has also been an increase in the number of available antifibrotic treatment options, starting with pirfenidone and nintedanib. These drugs prevent deterioration but do not improve IPF. Therefore, nonpharmacologic approaches such as long-term oxygen therapy, pulmonary rehabilitation, and lung transplantation must be considered as additional treatment modalities.
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Affiliation(s)
- Hajime Fujimoto
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Mie University Graduate School of Medicine, Edobashi Tsu, Mie, Japan
| | - Tetsu Kobayashi
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Mie University Graduate School of Medicine, Edobashi Tsu, Mie, Japan
| | - Arata Azuma
- Department of Pulmonary Medicine, Infectious Disease and Oncology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
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15
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How I treat bronchiolitis obliterans syndrome after hematopoietic stem cell transplantation. Blood 2016; 129:448-455. [PMID: 27856461 DOI: 10.1182/blood-2016-08-693507] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 11/05/2016] [Indexed: 12/30/2022] Open
Abstract
In past years, a diagnosis of bronchiolitis obliterans syndrome (BOS) after allogeneic hematopoietic cell transplant (HCT) conferred nearly universal mortality secondary to lack of consensus for diagnostic criteria, poorly understood disease pathogenesis, and very few studies of therapeutic or supportive care interventions. Recently, however, progress has been made in these areas: revised consensus diagnostic guidelines are now available, supportive care has improved, there is greater understanding of potential mechanisms of disease, and prospective trials are being conducted. This article describes these advances and provides suggestions to optimize therapy for patients with BOS after HCT.
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Damlaj M, Bartoo G, Cartin-Ceba R, Gijima D, Alkhateeb HB, Merten J, Hashmi S, Litzow M, Gastineau D, Hogan W, Patnaik MM. Corticosteroid use as adjunct therapy for respiratory syncytial virus infection in adult allogeneic stem cell transplant recipients. Transpl Infect Dis 2016; 18:216-26. [PMID: 26909896 DOI: 10.1111/tid.12513] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 11/12/2015] [Accepted: 12/20/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Respiratory syncytial virus (RSV) infection causes significant morbidity and mortality in allogeneic stem cell transplant (allo-SCT) recipients. Although ribavirin and immunoglobulins are common components of therapy, the role of adjunct corticosteroids is not established. OBJECTIVES We sought to evaluate corticosteroid utilization in the setting of post-allo-SCT RSV infection in our center and assess post-transplant outcomes including pulmonary function decline. METHODS Patients with a history of RSV infection from 2008 to 2014 seen at our institution were identified. Treatment and outcome data were retrospectively collected. Forced expiratory volume at 1 s (FEV1) and carbon monoxide diffusion capacity (DLCO) were collected pre- and post-RSV infection. RESULTS During the observation period, RSV was isolated in 53 of 552 patients undergoing allo-SCT (10%) and 45 had evaluable therapy data. RSV-related mortality in this cohort was 4/45 (9%). Twenty-one (47%) were on corticosteroids prior to RSV diagnosis, of whom 11 (24%) had a dose increase post symptom onset. Eight (18%) patients were started on corticosteroids at the time of RSV infection. Corticosteroid therapy at symptom onset was associated with a higher rate of upper respiratory infection (URTI) to lower respiratory infection (LRTI) progression risk ratio (RR) 2.49 (1.21-5.13; P = 0.016), hospital admission RR 2.05 (1.24-3.37; P = 0.005), or intensive care unit admission RR 2.91 (1.89-5.01; P = 0.002). No significant difference was seen with FEV1 and DLCO decline (P = 0.3 and 0.24, respectively) or mortality (P = 0.26). CONCLUSION Adjunct corticosteroid use in the setting of RSV infection did not improve RSV-related outcomes including long-term pulmonary function. Our results do not support the routine use of corticosteroids; however, this finding does need to be verified in a larger cohort of patients.
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Affiliation(s)
- M Damlaj
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - G Bartoo
- Department of Pharmacy Services, Mayo Clinic, Rochester, Minnesota, USA
| | - R Cartin-Ceba
- Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - D Gijima
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - H B Alkhateeb
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - J Merten
- Department of Pharmacy Services, Mayo Clinic, Rochester, Minnesota, USA
| | - S Hashmi
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - M Litzow
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - D Gastineau
- Division of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - W Hogan
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - M M Patnaik
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
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Burgel PR, Bergeron A, Knoop C, Dusser D. [Small airway diseases and immune deficiency]. Rev Mal Respir 2016; 33:145-55. [PMID: 26854188 DOI: 10.1016/j.rmr.2015.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Accepted: 06/09/2015] [Indexed: 01/02/2023]
Abstract
INTRODUCTION Innate or acquired immune deficiency may show respiratory manifestations, often characterized by small airway involvement. The purpose of this article is to provide an overview of small airway disease across the major causes of immune deficiency. BACKGROUND In patients with common variable immune deficiency, recurrent lower airway infections may lead to bronchiolitis and bronchiectasis. Follicular and/or granulomatous bronchiolitis of unknown origin may also occur. Bronchiolitis obliterans is the leading cause of death after the first year in patients with lung transplantation. Bronchiolitis obliterans also occurs in patients with allogeneic haematopoietic stem cell transplantation, especially in the context of systemic graft-versus-host disease. VIEWPOINT AND CONCLUSION Small airway diseases have different clinical expression and pathophysiology across various causes of immune deficiency. A better understanding of small airways disease pathogenesis in these settings may lead to the development of novel targeted therapies.
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Affiliation(s)
- P-R Burgel
- Université Paris Descartes, Sorbonne Paris Cité, 75005 Paris, France; Service de pneumologie, hôpital Cochin, AP-HP, 27, rue du Faubourg-Saint-Jacques, 75014 Paris, France.
| | - A Bergeron
- Université Paris Diderot, Sorbonne Paris Cité, 75013 Paris, France; Service de pneumologie, hôpital Saint-Louis, AP-HP, 75010 Paris, France
| | - C Knoop
- Department of Chest Medicine, Erasme University Hospital, université libre de Bruxelles, Bruxelles, Belgique
| | - D Dusser
- Université Paris Descartes, Sorbonne Paris Cité, 75005 Paris, France; Service de pneumologie, hôpital Cochin, AP-HP, 27, rue du Faubourg-Saint-Jacques, 75014 Paris, France
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Predictive value of bronchiolitis obliterans syndrome stage 0p in chronic graft-versus-host disease of the lung. Biol Blood Marrow Transplant 2015; 21:1127-31. [PMID: 25687798 DOI: 10.1016/j.bbmt.2015.02.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 02/07/2015] [Indexed: 11/20/2022]
Abstract
Bronchiolitis obliterans syndrome (BOS) is a significant post-transplant complication with low survival. BOS stage 0p (BOS 0p) is a parameter detected on pulmonary function tests (PFTs) after lung transplantation to identify patients at risk to develop BOS. We performed a retrospective study on 442 patients who underwent allogeneic stem cell transplant from 2007 to 2011 to evaluate whether development of BOS 0p is a risk factor in this population for BOS. Patients who met criteria for BOS 0p were significantly more likely to develop BOS (hazard ratio [HR], 3.22; P < .001). BOS 0p was significantly associated with a history of lung disease pretransplant (HR, 2.48; P = .001) and chronic graft-versus-host disease (GVHD) outside the lung post-transplant (HR, 23; P < .001). Finally, BOS 0p criteria were adequately sensitive in predicting BOS (85%), with a high negative predictive value (98%). Our findings suggest a routine PFT screening strategy with the intent of detecting BOS 0p, especially among patients with prior lung disease and who developed chronic GVHD, could suitably identify an at-risk population for the development of BOS.
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Nishikiori H, Chiba H, Ariki S, Kuronuma K, Otsuka M, Shiratori M, Ikeda K, Watanabe A, Kuroki Y, Takahashi H. Distinct compartmentalization of SP-A and SP-D in the vasculature and lungs of patients with idiopathic pulmonary fibrosis. BMC Pulm Med 2014; 14:196. [PMID: 25488319 PMCID: PMC4293112 DOI: 10.1186/1471-2466-14-196] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 11/20/2014] [Indexed: 12/17/2022] Open
Abstract
Background Surfactant proteins SP-A and SP-D are useful biomarkers in diagnosis, monitoring, and prognosis of idiopathic pulmonary fibrosis (IPF). Despite their high structural homology, their serum concentrations often vary in IPF patients. This retrospective study aimed to investigate distinct compartmentalization of SP-A and SP-D in the vasculature and lungs by bronchoalveolar lavage fluid (BALF)/serum analysis, hydrophilicity and immunohistochemistry. Methods We included 36 IPF patients, 18 sarcoidosis (SAR) patients and 20 healthy subjects. Low-speed centrifugal supernatants of BALF (Sup-1) were obtained from each subject. Sera were also collected from each patient. Furthermore, we separated Sup-1 of IPF patients into hydrophilic supernatant (Sup-2) and hydrophobic precipitate (Ppt) by high-speed centrifugation. We measured SP-A and SP-D levels of each sample with the sandwich ELISA technique. We analyzed the change of the BALF/serum level ratios of the two proteins in IPF patients and their hydrophilicity in BALF. The distribution in the IPF lungs was also examined by immunohistochemical staining. Results In BALF, SP-A levels were comparable between the groups; however, SP-D levels were significantly lower in IPF patients than in others. Although IPF reduced the BALF/serum level ratios of the two proteins, the change in concentration of SP-D was more evident than SP-A. This suggests a higher disease impact for SP-D. Regarding hydrophilicity, although more than half of the SP-D remained in hydrophilic fractions (Sup-2), almost all of the SP-A sedimented in the Ppt with phospholipids. Hydrophilicity suggests that SP-D migrates into the blood more easily than SP-A in IPF lungs. Immunohistochemistry revealed that SP-A was confined to thick mucus-filling alveolar space, whereas SP-D was often intravascular. This data also suggests that SP-D easily leaks into the bloodstream, whereas SP-A remains bound to surfactant lipids in the alveolar space. Conclusions The current study investigated distinct compartmentalization of SP-A and SP-D in the vasculature and lungs. Our results suggest that serum levels of SP-D could reflect pathological changes of the IPF lungs more incisively than those of SP-A.
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Affiliation(s)
| | - Hirofumi Chiba
- Department of Respiratory Medicine and Allergology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-ku, Sapporo 060-8556, Japan.
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Meyer KC, Raghu G, Verleden GM, Corris PA, Aurora P, Wilson KC, Brozek J, Glanville AR. An international ISHLT/ATS/ERS clinical practice guideline: diagnosis and management of bronchiolitis obliterans syndrome. Eur Respir J 2014; 44:1479-503. [PMID: 25359357 DOI: 10.1183/09031936.00107514] [Citation(s) in RCA: 382] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Bronchiolitis obliterans syndrome (BOS) is a major complication of lung transplantation that is associated with poor survival. The International Society for Heart and Lung Transplantation, American Thoracic Society, and European Respiratory Society convened a committee of international experts to describe and/or provide recommendations for 1) the definition of BOS, 2) the risk factors for developing BOS, 3) the diagnosis of BOS, and 4) the management and prevention of BOS. A pragmatic evidence synthesis was performed to identify all unique citations related to BOS published from 1980 through to March, 2013. The expert committee discussed the available research evidence upon which the updated definition of BOS, identified risk factors and recommendations are based. The committee followed the GRADE (Grading of Recommendation, Assessment, Development and Evaluation) approach to develop specific clinical recommendations. The term BOS should be used to describe a delayed allograft dysfunction with persistent decline in forced expiratory volume in 1 s that is not caused by other known and potentially reversible causes of post-transplant loss of lung function. The committee formulated specific recommendations about the use of systemic corticosteroids, cyclosporine, tacrolimus, azithromycin and about re-transplantation in patients with suspected and confirmed BOS. The diagnosis of BOS requires the careful exclusion of other post-transplant complications that can cause delayed lung allograft dysfunction, and several risk factors have been identified that have a significant association with the onset of BOS. Currently available therapies have not been proven to result in significant benefit in the prevention or treatment of BOS. Adequately designed and executed randomised controlled trials that properly measure and report all patient-important outcomes are needed to identify optimal therapies for established BOS and effective strategies for its prevention.
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Affiliation(s)
- Keith C Meyer
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Ganesh Raghu
- School of Medicine, University of Washington, Seattle, WA, USA
| | | | | | - Paul Aurora
- Great Ormond Street Hospital for Children, London, UK
| | | | - Jan Brozek
- McMaster University, Hamilton, ON, Canada
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22
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Epler GR. Constrictive bronchiolitis obliterans: the fibrotic airway disorder. Expert Rev Respir Med 2014; 1:139-47. [DOI: 10.1586/17476348.1.1.139] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Improving survival outcomes in lung transplant recipients through early detection of bronchiolitis obliterans: Daily home spirometry versus standard pulmonary function testing. CANADIAN JOURNAL OF RESPIRATORY THERAPY : CJRT = REVUE CANADIENNE DE LA THERAPIE RESPIRATOIRE : RCTR 2014; 50:17-22. [PMID: 26078605 PMCID: PMC4456850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
BACKGROUND Long-term lung transplant success is limited by bronchiolitis obliterans syndrome (BOS), a form of chronic allograft rejection that manifests in the majority of patients by five years post-transplant. Frequent monitoring of pulmonary function measurements through the use of daily home spirometry may have the capability to detect the onset of BOS sooner than standard pulmonary function testing. Early detection of BOS would confer a treatment advantage that may improve survival outcomes for lung transplant recipients. METHODS A systematic review of current evidence was used to determine the effectiveness of daily home spirometry as a BOS detection tool, in addition to its impact and survival outcomes. Articles were included in the present systematic review if they were randomized control studies and if their purpose(s) included investigation of spirometry as a BOS detection tool in lung transplant patients. RESULTS A primary search of databases yielded 115 unique citations, with an additional four citations identified through a secondary review of the reference lists of retrieved articles. After application of all inclusion and exclusion criteria through abstract and full-text review, eight randomized controlled trials were included in the review. DISCUSSION Forced expiratory volume in 1 s (FEV1) has been identified as the most reliable diagnostic tool for detecting the onset of BOS. Two studies compared the use of traditionally scheduled pulmonary function testing with daily home spirometry and found BOS stage 1 to appear 341 days earlier with home spirometry (P<0.001). Other studies that investigated the impact early detection had on survival showed a positive trend toward freedom from BOS and reduced rates of retransplantation, although these results did not reach statistical significance (P<0.07). CONCLUSION Daily home spirometry has been shown to lead to earlier detection and staging of BOS when compared with standard pulmonary function testing. Although FEV1 has been shown to be the most sensitive and reliable marker of BOS onset, the impact of earlier staging via home spirometry on survival has not been reliably determined.
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Snell GI, Paraskeva M, Westall GP. Managing bronchiolitis obliterans syndrome (BOS) and chronic lung allograft dysfunction (CLAD) in children: what does the future hold? Paediatr Drugs 2013; 15:281-9. [PMID: 23605986 DOI: 10.1007/s40272-013-0026-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The success of pediatric lung transplantation continues to be limited by long-term graft dysfunction. Historically this has been characterized as an obstructive spirometric defect in the form of the bronchiolitis obliterans syndrome (BOS). It is recognized, however, that this does not reflect many of the other acknowledged etiologies of chronic lung dysfunction-noting it is the sum of the parts that contribute to respiratory morbidity and mortality after transplant. The term chronic lung allograft dysfunction (CLAD) has been coined to reflect these other entities and, in particular, a group of relatively recently described lung disorders called the restrictive allograft syndrome (RAS). RAS is characterized by a restrictive spirometric defect. Although these entities have not yet been studied in a pediatric setting their association with poor compliance, antibody-mediated rejection (AMR), and post-infectious lung damage (particularly viral) warrants attention by pediatric lung transplant teams. Current therapy for the BOS subset of CLAD is otherwise limited to changing immunosuppressants and avoiding excessive infectious risk by avoiding over-immunosuppression. Long-term macrolide therapy in lung transplantation is not of proven efficacy. Reviewing previous BOS studies to explore restrictive spirometric cases and joint projects via groups like the International Pediatric Lung Transplant Collaborative will be the way forward to solve this pressing problem.
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Affiliation(s)
- Gregory I Snell
- National Paediatric Lung Transplant Service, Alfred Hospital and Monash University, Melbourne 3004, Australia.
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25
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Weigt SS, DerHovanessian A, Wallace WD, Lynch JP, Belperio JA. Bronchiolitis obliterans syndrome: the Achilles' heel of lung transplantation. Semin Respir Crit Care Med 2013; 34:336-51. [PMID: 23821508 PMCID: PMC4768744 DOI: 10.1055/s-0033-1348467] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Lung transplantation is a therapeutic option for patients with end-stage pulmonary disorders. Unfortunately, chronic lung allograft dysfunction (CLAD), most commonly manifest as bronchiolitis obliterans syndrome (BOS), continues to be highly prevalent and is the major limitation to long-term survival. The pathogenesis of BOS is complex and involves alloimmune and nonalloimmune pathways. Clinically, BOS manifests as airway obstruction and dyspnea that are classically progressive and ultimately fatal; however, the course is highly variable, and distinguishable phenotypes may exist. There are few controlled studies assessing treatment efficacy, but only a minority of patients respond to current treatment modalities. Ultimately, preventive strategies may prove more effective at prolonging survival after lung transplantation, but their remains considerable debate and little data regarding the best strategies to prevent BOS. A better understanding of the risk factors and their relationship to the pathological mechanisms of chronic lung allograft rejection should lead to better pharmacological targets to prevent or treat this syndrome.
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Affiliation(s)
- S Samuel Weigt
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California 90095, USA.
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Greenland JR, Jones KD, Hays SR, Golden JA, Urisman A, Jewell NP, Caughey GH, Trivedi NN. Association of large-airway lymphocytic bronchitis with bronchiolitis obliterans syndrome. Am J Respir Crit Care Med 2012; 187:417-23. [PMID: 23239157 DOI: 10.1164/rccm.201206-1025oc] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Lung transplantation offers great promise for otherwise terminal lung diseases, but the development of bronchiolitis obliterans syndrome (BOS) continues to limit survival. Although acute rejection and lymphocytic bronchiolitis have been identified as risk factors for the development of BOS, it is unclear whether large-airway lymphocytic inflammation conveys the same risk. OBJECTIVES We evaluated lymphocytic bronchitis on endobronchial biopsies as a risk factor for BOS and mortality. METHODS Endobronchial biopsies were collected and graded during surveillance after lung transplantation. We assessed samples with negative cultures collected in the first 90 days from 298 subjects and compared large-airway lymphocytic bronchitis assessed by a 0-2 "E-score" and with standard A and BR pathology scores for acute rejection and small-airway lymphocytic bronchiolitis, respectively. MEASUREMENTS AND MAIN RESULTS We found surprisingly little association between large- and small-airway lymphocytic inflammation scores from a given bronchoscopy. Endobronchial lymphocytic bronchitis was more prevalent in subjects in BOS stage 0p and BOS stages 1-3 at the time of biopsy. Within 90 days after transplantation, increasing maximum E-score was associated with greater risk of BOS (adjusted hazard ratio, 1.76; 95% confidence interval, 1.11-2.78; P = 0.02) and in this analysis 90-day maximum E-scores were the only score type predictive of BOS (P < 0.01). CONCLUSIONS These results support a multicenter study to evaluate endoscopic biopsies for the identification of patients at increased risk for BOS. The association of endobronchial lymphocytic inflammation and BOS may have mechanistic implications.
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Affiliation(s)
- John R Greenland
- Department of Medicine, University of California at San Francisco, San Francisco, CA 94121, USA
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27
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Sato M. Chronic lung allograft dysfunction after lung transplantation: the moving target. Gen Thorac Cardiovasc Surg 2012; 61:67-78. [DOI: 10.1007/s11748-012-0167-3] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Indexed: 11/29/2022]
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Neuringer IP, Noone P, Cicale RK, Davis K, Aris RM. Managing complications following lung transplantation. Expert Rev Respir Med 2012; 3:403-23. [PMID: 20477331 DOI: 10.1586/ers.09.27] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Lung transplantation has become a proven therapeutic option for patients with end-stage lung disease, extending life and providing improved quality of life to those who otherwise would continue to be breathless and oxygen-dependent. Over the past 20 years, considerable experience has been gained in understanding the multitude of medical and surgical issues that impact upon patient survival. Today, clinicians have an armamentarium of tools to manage diverse problems such as primary graft dysfunction, acute and chronic allograft rejection, airway anastomotic issues, infectious complications, renal dysfunction, diabetes and osteoporosis, hematological and gastrointestinal problems, malignancy, and other unique issues that confront immunosuppressed solid organ transplant recipients.
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Affiliation(s)
- Isabel P Neuringer
- Division of Pulmonary and Critical Care Medicine and the Cystic Fibrosis/Pulmonary Research and Treatment Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7524, USA.
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Walker NM, Badri LN, Wadhwa A, Wettlaufer S, Peters-Golden M, Lama VN. Prostaglandin E2 as an inhibitory modulator of fibrogenesis in human lung allografts. Am J Respir Crit Care Med 2012; 185:77-84. [PMID: 21940790 DOI: 10.1164/rccm.201105-0834oc] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
RATIONALE Donor mesenchymal stromal/stem cell (MSC) expansion and fibrotic differentiation is associated with development of bronchiolitis obliterans syndrome (BOS) in human lung allografts. However, the regulators of fibrotic differentiation of these resident mesenchymal cells are not well understood. OBJECTIVES This study examines the role of endogenous and exogenous prostaglandin (PG)E2 as a modulator of fibrotic differentiation of human lung allograft-derived MSCs. METHODS Effect of PGE2 on proliferation, collagen secretion, and α-smooth muscle actin (α-SMA) expression was assessed in lung-resident MSCs (LR-MSCs) derived from patients with and without BOS. The response pathway involved was elucidated by use of specific agonists and antagonists. MEASUREMENT AND MAIN RESULTS PGE2 treatment of LR-MSCs derived from normal lung allografts significantly inhibited their proliferation, collagen secretion, and α-SMA expression. On the basis of pharmacologic and small-interfering RNA approaches, a PGE2/E prostanoid (EP)2/adenylate cyclase pathway was implicated in these suppressive effects. Stimulation of endogenous PGE2 secretion by IL-1β was associated with amelioration of their myofibroblast differentiation in vitro, whereas its inhibition by indomethacin augmented α-SMA expression. LR-MSCs from patients with BOS secreted significantly less PGE2 than non-BOS LR-MSCs. Furthermore, BOS LR-MSCs were found to be defective in their ability to induce cyclooxygenase-2, and therefore unable to up-regulate PGE2 synthesis in response to IL-1β. BOS LR-MSCs also demonstrated resistance to the inhibitory actions of PGE2 in association with a reduction in the EP2/EP1 ratio. CONCLUSIONS These data identify the PGE2 axis as an important autocrine-paracrine brake on fibrotic differentiation of LR-MSCs, a failure of which is associated with BOS.
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Affiliation(s)
- Natalie M Walker
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Health System, 1500 East Medical Center Drive, 3916 Taubman Center, Ann Arbor, MI 48109-0360, USA
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Estenne M, Fessler HE, DeCamp MM. Lung transplantation and lung volume reduction surgery. Compr Physiol 2011; 1:1437-71. [PMID: 23733648 DOI: 10.1002/cphy.c100044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Since the publication of the last edition of the Handbook of Physiology, lung transplantation has become widely available, via specialized centers, for a variety of end-stage lung diseases. Lung volume reduction surgery, a procedure for emphysema first conceptualized in the 1950s, electrified the pulmonary medicine community when it was rediscovered in the 1990s. In parallel with their technical and clinical refinement, extensive investigation has explored the unique physiology of these procedures. In the case of lung transplantation, relevant issues include the discrepant mechanical function of the donor lungs and recipient thorax, the effects of surgical denervation, acute and chronic rejection, respiratory, chest wall, and limb muscle function, and response to exercise. For lung volume reduction surgery, there have been new insights into the counterintuitive observation that lung function in severe emphysema can be improved by resecting the most diseased portions of the lungs. For both procedures, insights from physiology have fed back to clinicians to refine patient selection and to scientists to design clinical trials. This section will first provide an overview of the clinical aspects of these procedures, including patient selection, surgical techniques, complications, and outcomes. It then reviews the extensive data on lung and muscle function following transplantation and its complications. Finally, it reviews the insights from the last 15 years on the mechanisms whereby removal of lung from an emphysema patient can improve the function of the lung left behind.
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Affiliation(s)
- Marc Estenne
- Chest Service and Thoracic Transplantation Unit, Erasme University Hospital, Brussels, Belgium
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Abstract
Chronic, progressive, and irreversible loss of lung function is the major medium-term and long-term complication after lung transplantation and the leading cause of death. Over the past decade, progress has been made in understanding the pathogenesis of bronchiolitis obliterans. Alloimmune factors and nonalloimmune factors may contribute to its development. Understanding the precise mechanism of each type of chronic allograft dysfunction may open up the field for new preventive and therapeutic interventions. This article reviews major new insights into the clinical aspects, pathophysiology, risk factors, diagnosis, and management of chronic allograft dysfunction after lung transplantation.
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Affiliation(s)
- Christiane Knoop
- Department of Chest Medicine, Erasme University Hospital, Université Libre de Bruxelles, 808 Route de Lennik, B-1070 Brussels, Belgium.
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Abstract
In the last 45 years, lung transplantation has evolved from its status as a rare extreme form of surgical therapy for the treatment of advanced lung diseases to an accepted therapeutic option for select patients. Although pulmonary fibrosis and pulmonary vascular diseases are important indications for lung transplantation, only a small percentage of transplants are performed in patients with collagen vascular diseases. The reasons for this low number are multifactorial. This article reviews issues relevant to all lung transplant candidates and recipients as well as those specific to patients with autoimmune diseases.
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Affiliation(s)
- James C Lee
- Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA
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Federica M, Nadia S, Monica M, Alessandro C, Tiberio O, Francesco B, Mario V, Maria FA. Clinical and immunological evaluation of 12-month azithromycin therapy in chronic lung allograft rejection. Clin Transplant 2011; 25:E381-9. [DOI: 10.1111/j.1399-0012.2011.01435.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Knoop C, Rondelet B, Dumonceaux M, Estenne M. [Medical complications of lung transplantation]. REVUE DE PNEUMOLOGIE CLINIQUE 2010; 67:28-49. [PMID: 21353971 DOI: 10.1016/j.pneumo.2010.08.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2010] [Accepted: 08/15/2010] [Indexed: 05/30/2023]
Abstract
In 2010, lung transplantation is a valuable therapeutic option for a number of patients suffering from of end-stage non-neoplastic pulmonary diseases. The patients frequently regain a very good quality of life, however, long-term survival is often hampered by the development of complications such as the bronchiolitis obliterans syndrome, metabolic and infectious complications. As the bronchiolitis obliterans syndrome is the first cause of death in the medium and long term, an intense immunosuppressive treatment is maintained for life in order to prevent or stabilize this complication. The immunosuppression on the other hand induces a number of potentially severe complications including metabolic complications, infections and malignancies. The most frequent metabolic complications are arterial hypertension, chronic renal insufficiency, diabetes, hyperlipidemia and osteoporosis. Bacterial, viral and fungal infections are the second cause of mortality. They are to be considered as medical emergencies and require urgent assessment and targeted therapy after microbiologic specimens have been obtained. They should not, under any circumstances, be treated empirically and it has also to be kept in mind that the lung transplant recipient may present several concomitant infections. The most frequent malignancies are skin cancers, the post-transplant lymphoproliferative disorders, Kaposi's sarcoma and some types of bronchogenic carcinomas, head/neck and digestive cancers. Lung transplantation is no longer an exceptional procedure; thus, the pulmonologist will be confronted with such patients and should be able to recognize the symptoms and signs of the principal non-surgical complications. The goal of this review is to give a general overview of the most frequently encountered complications. Their assessment and treatment, though, will most often require the input of other specialists and a multidisciplinary and transversal approach.
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Affiliation(s)
- C Knoop
- Unité de transplantation cardiaque et pulmonaire (UTCP), service de pneumologie, hôpital universitaire Érasme, Bruxelles, Belgique.
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Dumonceaux M, Knoop C, Rondelet B, Estenne M. Complications de la transplantation pulmonaire : complications péri-opératoires, rejet aigu et chronique. Rev Mal Respir 2009; 26:639-53. [DOI: 10.1016/s0761-8425(09)74694-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hachem RR, Yusen RD, Chakinala MM, Meyers BF, Lynch JP, Aloush AA, Patterson GA, Trulock EP. A randomized controlled trial of tacrolimus versus cyclosporine after lung transplantation. J Heart Lung Transplant 2007; 26:1012-8. [PMID: 17919621 DOI: 10.1016/j.healun.2007.07.027] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2007] [Revised: 07/11/2007] [Accepted: 07/15/2007] [Indexed: 10/22/2022] Open
Abstract
BACKGROUND The optimal maintenance immunosuppressive regimen after lung transplantation is uncertain. METHODS We conducted a randomized controlled trial of tacrolimus versus cyclosporine in combination with azathioprine and prednisone after lung transplantation. Ninety adults were randomized to tacrolimus (n = 44) or cyclosporine (n = 46). The primary end point was a composite of a cumulative acute rejection A score of 3 or higher, a cumulative lymphocytic bronchitis B score of 4 or higher, or the onset of bronchiolitis obliterans syndrome (BOS) stage 0-p. RESULTS Recipients randomized to cyclosporine were significantly more likely to develop the primary end point than those randomized to tacrolimus. During the study period, the primary end point developed in 39 of 46 cyclosporine subjects compared with 24 of 44 tacrolimus subjects (p = 0.002); acute rejection or lymphocytic bronchitis end points developed in 29 of 46 cyclosporine subjects compared with 18 of 44 tacrolimus subjects (p = 0.036). Furthermore, BOS stage 0-p was more likely to develop in the cyclosporine group than in the tacrolimus group, but this was not statistically significant (log-rank p = 0.1). In addition, there was a trend to a higher incidence of diabetes among those in the tacrolimus group, but there was no significant difference in graft survival or the total number of infections, or in the incidence of hypertension, chronic kidney disease, or cancer between the 2 groups. CONCLUSIONS Tacrolimus is associated with a lower burden of acute rejection and lymphocytic bronchitis and a trend to a greater freedom from BOS stage 0-p than cyclosporine after lung transplantation.
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Affiliation(s)
- Ramsey R Hachem
- Division of Pulmonary & Critical Care, Washington University School of Medicine, St. Louis, Missouri 63110, USA.
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Abstract
Bronchiolocentric fibrosis is essentially represented by the pathological pattern of constrictive fibrotic bronchiolitis obliterans. The corresponding clinical condition (obliterative bronchiolitis) is characterised by dyspnoea, airflow obstruction at lung function testing and air trapping with characteristic mosaic features on expiratory high resolution CT scans. Bronchiolitis obliterans may result from many causes including acute diffuse bronchiolar damage after inhalation of toxic gases or fumes, alloimmune chronic processes after lung or haematopoietic stem cell transplantation, or connective tissue disease (especially rheumatoid arthritis). Airway-centred interstitial fibrosis and bronchiolar metaplasia are other features of bronchiolocentric fibrosis.
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Affiliation(s)
- Jean-François Cordier
- Claude Bernard University and Department of Respiratory Medicine, Reference Center for Orphan Pulmonary Diseases, Louis Pradel University Hospital, 69677 Lyon (Bron), France.
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Fain SB, Korosec FR, Holmes JH, O'Halloran R, Sorkness RL, Grist TM. Functional lung imaging using hyperpolarized gas MRI. J Magn Reson Imaging 2007; 25:910-23. [PMID: 17410561 DOI: 10.1002/jmri.20876] [Citation(s) in RCA: 134] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The noninvasive assessment of lung function using imaging is increasingly of interest for the study of lung diseases, including chronic obstructive pulmonary disease (COPD) and asthma. Hyperpolarized gas MRI (HP MRI) has demonstrated the ability to detect changes in ventilation, perfusion, and lung microstructure that appear to be associated with both normal lung development and disease progression. The physical characteristics of HP gases and their application to MRI are presented with an emphasis on current applications. Clinical investigations using HP MRI to study asthma, COPD, cystic fibrosis, pediatric chronic lung disease, and lung transplant are reviewed. Recent advances in polarization, pulse sequence development for imaging with Xe-129, and prototype low magnetic field systems dedicated to lung imaging are highlighted as areas of future development for this rapidly evolving technology.
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Affiliation(s)
- Sean B Fain
- Department of Medical Physics, University of Wisconsin, Madison, WI 53792, USA.
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Lama VN, Murray S, Lonigro RJ, Toews GB, Chang A, Lau C, Flint A, Chan KM, Martinez FJ. Course of FEV(1) after onset of bronchiolitis obliterans syndrome in lung transplant recipients. Am J Respir Crit Care Med 2007; 175:1192-8. [PMID: 17347496 PMCID: PMC1899272 DOI: 10.1164/rccm.200609-1344oc] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Bronchiolitis obliterans syndrome (BOS), defined by loss of lung function, develops in the majority of lung transplant recipients. However, there is a paucity of information on the subsequent course of lung function in these patients. OBJECTIVES To characterize the course of FEV(1) over time after development of BOS and to determine the predictors that influence the rate of functional decline of FEV(1). METHODS FEV(1)% predicted (FEV(1)%pred) trajectories were studied in 111 lung transplant recipients with BOS by multivariate, linear, mixed-effects statistical models. MEASUREMENTS AND MAIN RESULTS FEV(1)%pred varied over time after BOS onset, with the steepest decline typically seen in the first 6 months (12% decline; p < 0.0001). Bilateral lung transplant recipients had significantly higher FEV(1)%pred at BOS diagnosis (71 vs. 47%; p < 0.0001) and at 24 months after BOS onset (58 vs. 41%; p = 0.0001). Female gender and pretransplant diagnosis of idiopathic pulmonary fibrosis were associated with a steeper decline in FEV(1)%pred in the first 6 months after BOS diagnosis (p = 0.02 and 0.04, respectively). A fall in FEV(1) greater than 20% in the 6 months preceding BOS (termed "rapid onset") was associated with shorter time to BOS onset (p = 0.01), lower FEV(1)%pred at BOS onset (p < 0.0001), steeper decline in the first 6 months (p = 0.03), and lower FEV(1)%pred at 2 years after onset (p = 0.0002). CONCLUSIONS Rapid onset of BOS, female gender, pretransplant diagnosis of idiopathic pulmonary fibrosis, and single-lung transplantation are associated with worse pulmonary function after BOS onset.
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Affiliation(s)
- Vibha N Lama
- Division of Pulmonary and Critical Care Medicine, University of Michigan Health System, 1500 East Medical Center Drive, 3916 Taubman Center, Ann Arbor, MI 48109-0360, USA.
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Abstract
PURPOSE OF REVIEW Bronchiolar abnormalities are relatively common and occur in a variety of clinical contexts. There have been an increasing number of terms, some of which are redundant, used in referring to various forms of bronchiolar disorders. The purpose of this review is to provide an updated classification scheme to facilitate the clinical approach to patients with suspected bronchiolar disease. RECENT FINDINGS The spectrum of bronchiolar disorders is broader and more heterogeneous than previously recognized. In deciphering the potential significance of bronchiolar abnormalities, it is useful to distinguish those disorders in which the bronchiolar involvement is the dominant pathologic process, that is, primary bronchiolar disorders, from parenchymal or large airway diseases in which the bronchioles may become secondarily involved. Primary bronchiolar disorders include respiratory bronchiolitis, acute bronchiolitis, constrictive bronchiolitis, follicular bronchiolitis, diffuse panbronchiolitis, mineral dust airway disease, and a few other variants. Interstitial lung diseases with a prominent bronchiolar involvement include smoking-related interstitial lung diseases, cryptogenic organizing pneumonia, and hypersensitivity pneumonitis. Bronchiolitis can also be seen in large airway diseases such as chronic bronchitis, bronchiectasis, and asthma. SUMMARY In the clinical approach to a patient with bronchiolar disease, primary bronchiolar disorders should be distinguished from predominantly parenchymal or large airway processes with bronchiolar involvement. The number of patterns of bronchiolar response to injury is limited and these patterns are generally non-specific in regard to cause. Appropriate diagnosis and management of patients with bronchiolar disorders depend on judicious correlation of clinical, physiologic, and morphologic manifestations.
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Affiliation(s)
- Jay H Ryu
- Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, Minnesota 55905, USA.
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Affiliation(s)
- Marc Estenne
- Chest Service, Erasme University Hospital, 808 Route de Lennik, B-1070 Brussels, Belgium.
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Van Muylem A, Scillia P, Knoop C, Paiva M, Estenne M. Single-breath test in lateral decubitus reflects function of single lungs grafted for emphysema. J Appl Physiol (1985) 2006; 100:834-8. [PMID: 16306251 DOI: 10.1152/japplphysiol.01307.2005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The slope of alveolar plateau for nitrogen derived from the single-breath test is useful to assess the function of bilateral lung grafts, but this technique is not applicable to patients with single-lung grafts due to the confounding influence of the native lung. We tested the hypothesis that the nitrogen slope measured in lateral decubitus with the graft in nondependent position may primarily reflect the distribution of ventilation in this lung. Fifteen patients with single-lung transplantation for emphysema, 10 healthy controls, and 7 patients with advanced emphysema performed single-breath washouts in right and left lateral decubitus; nitrogen slope was measured between 75 and 100% of expired volume. In 10 transplant recipients, the volume of each lung was measured in the two postures by computerized tomography. Nitrogen slope was unaffected by posture in normal controls and emphysema patients. On the other hand, nitrogen slope in transplant recipients was invariably smaller, with the graft in nondependent vs. in dependent position. Values of nitrogen slope with the graft in nondependent position were similar to those obtained in normal controls but significantly smaller than those obtained in emphysema patients. Computerized tomography studies in this position indicated that the volume expired below functional residual capacity was exclusively contributed by the graft. We conclude that, in patients with single-lung transplantation for emphysema, 1) measuring nitrogen slope in lateral decubitus allows to distinguish between the graft and the native lung, and 2) nitrogen slope obtained with the graft in nondependent position reflects ventilation distribution in this lung.
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Affiliation(s)
- Alain Van Muylem
- Department of Chest Medicine, Erasme Univ. Hospital, 808, Route de Lennik, B-1070 Brussels, Belgium
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