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Enfermedades pulmonares inhalatorias. RADIOLOGIA 2022. [DOI: 10.1016/j.rx.2022.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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202
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Rodriguez K, Ashby CL, Varela VR, Sharma A. High-Resolution Computed Tomography of Fibrotic Interstitial Lung Disease. Semin Respir Crit Care Med 2022; 43:764-779. [PMID: 36307108 DOI: 10.1055/s-0042-1755563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
While radiography is the first-line imaging technique for evaluation of pulmonary disease, high-resolution computed tomography (HRCT) provides detailed assessment of the lung parenchyma and interstitium, allowing normal anatomy to be differentiated from superimposed abnormal findings. The fibrotic interstitial lung diseases have HRCT features that include reticulation, traction bronchiectasis and bronchiolectasis, honeycombing, architectural distortion, and volume loss. The characterization and distribution of these features result in distinctive CT patterns. The CT pattern and its progression over time can be combined with clinical, serologic, and pathologic data during multidisciplinary discussion to establish a clinical diagnosis. Serial examinations identify progression, treatment response, complications, and can assist in determining prognosis. This article will describe the technique used to perform HRCT, the normal and abnormal appearance of the lung on HRCT, and the CT patterns identified in common fibrotic lung diseases.
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Affiliation(s)
- Karen Rodriguez
- Division of Thoracic Imaging and Intervention, Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts
| | - Christian L Ashby
- School of Medicine, Universidad Central del Caribe School of Medicine, Bayamón, Puerto Rico
| | - Valeria R Varela
- School of Medicine, Universidad Central del Caribe School of Medicine, Bayamón, Puerto Rico
| | - Amita Sharma
- Division of Thoracic Imaging and Intervention, Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts
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203
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Elicker BM. Chronic Obstructive Pulmonary Disease and Small Airways Diseases. Semin Respir Crit Care Med 2022; 43:825-838. [PMID: 36252610 DOI: 10.1055/s-0042-1755567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The small airways are a common target of injury within the lungs and may be affected by a wide variety of inhaled, systemic, and other disorders. Imaging is critical in the detection and diagnosis of small airways disease since significant injury may occur prior to pulmonary function tests showing abnormalities. The goal of this article is to describe the typical imaging findings and patterns of small airways diseases. An approach which divides the imaging appearances into four categories (tree-in-bud opacities, poorly defined centrilobular nodules, mosaic attenuation, and emphysema) will provide a framework in which to formulate appropriate and focused differential diagnoses.
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Affiliation(s)
- Brett M Elicker
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California
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204
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Benegas Urteaga M, Ramírez Ruz J, Sánchez González M. Idiopathic pulmonary fibrosis. RADIOLOGIA 2022; 64 Suppl 3:227-239. [PMID: 36737162 DOI: 10.1016/j.rxeng.2022.10.009] [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: 09/30/2022] [Accepted: 10/29/2022] [Indexed: 02/05/2023]
Abstract
Idiopathic pulmonary fibrosis (IPF) is the most common fibrosing lung disease. It is associated with a very poor prognosis. Treatments can delay the progression of IPF, so early diagnosis is fundamental. Radiologists play a fundamental role in the evaluation and accurate diagnosis of IPF. Identifying the characteristic patterns of IPF on high-resolution computed tomography (HRCT) is key in the process of multidisciplinary diagnosis, often obviating the need for surgical lung biopsies. This review describes and illustrates the clinical and imaging findings in IPF in the context of the most recent international guidelines, as well as the differential diagnosis and the role of HRCT in follow-up and assessment of complications.
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Affiliation(s)
- M Benegas Urteaga
- Servicio de Radiodiagnóstico, CDI, Hospital Clínic de Barcelona, Barcelona, Spain
| | - J Ramírez Ruz
- Servicio de Anatomía Patológica, CDB, Hospital Clínic de Barcelona, Barcelona, Spain
| | - M Sánchez González
- Servicio de Radiodiagnóstico, CDI, Hospital Clínic de Barcelona, Barcelona, Spain.
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205
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Moda M, Suga M, Kasai S, Okochi Y, Yoshimura N, Fukata M, Tokuda H. Incidence, Characteristics, Clinical Course, and Risk Factors of Ulcerative Colitis-related Lung Diseases. Chest 2022; 162:1310-1323. [PMID: 35691329 DOI: 10.1016/j.chest.2022.05.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 04/27/2022] [Accepted: 05/19/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Ulcerative colitis (UC) is a chronic GI inflammatory disorder involving various extraintestinal organs, including the lungs. Although UC-related lung diseases (UC-LDs) have been widely recognized, much remains unclear. RESEARCH QUESTION What are the incidence, characteristics, clinical course, and risk factors of UC-LD? STUDY DESIGN AND METHODS This study retrospectively identified and classified UC-LDs by reviewing the medical records of consecutive patients with UC. The incidence, characteristics, and clinical course of each UC-LD type were investigated, and the clinical characteristics of patients with and without each UC-LD type were compared. RESULTS Among 563 patients with UC, 28 (5.0%) developed UC-LD during a mean follow-up period of 77 months. A majority of them displayed airway disease (AD) (n = 13 [2.3%]) or organizing pneumonia (OP) (n = 10 [1.8%]); there were six cases of interstitial pneumonias other than OP (IP) (0.8%) and one of pleuritis (0.2%). All 13 patients with AD responded favorably to inhaled or systemic corticosteroids, although five experienced frequent exacerbations. Older age and a history of colectomy were identified as the risk factors for developing AD. Nine of the 10 cases of OP were possibly due to drug-induced pathogenesis. Only one case showed recurrence, and all cases of OP exhibited a favorable clinical course with discontinuation of the suspicious drug and/or initiation of corticosteroid. The clinical course of IP depended on the existence of fibrosis, and IP with fibrosis was associated with gradual deterioration. Older age was associated with the development of IP. INTERPRETATION A nonnegligible number of patients with UC may develop UC-LD. AD, OP, and IP without fibrosis show good prognosis following steroid therapy along with the specific management for each UC-LD type, whereas IP with fibrosis shows gradual deterioration with poor prognosis. Our results provide cues to establish better management of UC-LDs.
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Affiliation(s)
- Mitsuhiro Moda
- Department of Respiratory Medicine, National Hospital Organization Kinki-chuo Chest Medical Center, Osaka, Japan; Department of Respiratory Medicine, Japan Community Health Care Organization Tokyo Yamate Medical Center, Tokyo, Japan.
| | - Miyuri Suga
- Department of Respiratory Medicine, Japan Community Health Care Organization Tokyo Yamate Medical Center, Tokyo, Japan; Department of Respiratory Medicine, Graduate School of Medicine Nippon Medical School, Tokyo, Japan
| | - Shogo Kasai
- Department of Respiratory Medicine, Japan Community Health Care Organization Tokyo Yamate Medical Center, Tokyo, Japan
| | - Yasumi Okochi
- Department of Respiratory Medicine, Japan Community Health Care Organization Tokyo Yamate Medical Center, Tokyo, Japan
| | - Naoki Yoshimura
- Center for Inflammatory Bowel Disease, Division of Gastroenterology, Department of Internal Medicine, Japan Community Health Care Organization Tokyo Yamate Medical Center, Tokyo, Japan
| | - Masayuki Fukata
- Center for Inflammatory Bowel Disease, Division of Gastroenterology, Department of Internal Medicine, Japan Community Health Care Organization Tokyo Yamate Medical Center, Tokyo, Japan
| | - Hitoshi Tokuda
- Department of Respiratory Medicine, Japan Community Health Care Organization Tokyo Yamate Medical Center, Tokyo, Japan
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206
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He J, Zhang J, Ren X. Krebs von den lungen-6 as a clinical marker for hypersensitivity pneumonitis: A meta-analysis and bioinformatics analysis. Front Immunol 2022; 13:1041098. [PMID: 36532009 PMCID: PMC9748086 DOI: 10.3389/fimmu.2022.1041098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 11/14/2022] [Indexed: 12/05/2022] Open
Abstract
Aim Hypersensitivity pneumonitis (HP), also referred to as exogenous allergic alveolitis, is one of the most common interstitial lung diseases (ILDs). A potential immune biomarker, Krebs von den lgen-6 (KL-6) characterizes the progression and severity of HP. The meta-analysis in this study was conducted to elucidate the variations in the concentrations of KL-6 in different types of HP. Methods A systematic search of various databases such as EMBASE, Pubmed, CNKI, VIP, Web of Science, and WanFang was carried out to find relevant published articles between January 1980 and August 2022 that explored the relationship between KL-6 and allergic pneumonia. Standardized mean difference (SMD) and 95% confidence interval (CI) were used as effect sizes for comparison among different groups. The GSE47460 and GSE150910 datasets were downloaded to extract and validate the differences in KL-6 mRNA expression between HP lung tissue and healthy controls. Furthermore, the single-cell sequencing dataset GSE135893 was downloaded to extract KL-6 mRNA expression in type II alveolar epithelial cells to validate the differences between HP and healthy controls. Two researchers evaluated the quality of the included studies by employing Newcastle-Ottawa Scale. All the qualified studies were subjected to statistical analyses carried out utilizing RevMan 5.2, Stata 11.0, and R software 4.1.3. Results Twenty studies aligned perfectly with the inclusion criteria of the meta. The concentrations of KL-6 were substantially higher in the blood of HP patients as compared to the control group. Subgroup analyses were carried out in accordance with the allergen source and the results revealed that patients with different allergens had higher blood KL-6 concentrations than healthy controls. Additionally, different subgroups of subjects were created for meta-analysis as per the fibrosis status, race, measurement method, and sample type. The concentration of KL-6 in blood was much higher in all HP subgroups than in healthy control groups. Moreover, the bioinformatics analysis revealed that KL-6 mRNA expression was higher in HP lung tissue and type II alveolar epithelial cells as compared to healthy controls. Conclusion The present meta-analysis and bioinformatics analysis suggested that the concentration levels of KL-6 varied between HP patients and healthy individuals, and the KL-6 concentrations may be higher in the blood samples of HP patients. Systematic review registration https://www.crd.york.ac.uk/prospero/, CRD42022355334.
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Affiliation(s)
- Jie He
- Clinical Medical College of Chengdu Medical College. Chengdu, Sichuan, China,Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China,*Correspondence: Jie He,
| | - Jiangliu Zhang
- Clinical Medical College of Chengdu Medical College. Chengdu, Sichuan, China,Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
| | - Xinyi Ren
- Clinical Medical College of Chengdu Medical College. Chengdu, Sichuan, China,Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
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207
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Prognostic Analysis of Pneumocystis Jirovecii Pneumonia in Interstitial Lung Disease Patients: A Retrospective Clinical Study. Diagnostics (Basel) 2022; 12:diagnostics12122925. [PMID: 36552932 PMCID: PMC9777515 DOI: 10.3390/diagnostics12122925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/16/2022] [Accepted: 11/22/2022] [Indexed: 11/25/2022] Open
Abstract
(1) Background: The clinical characteristics and the prognostic factors of HIV-negative Pneumocystis jirovecii pneumonia (PJP) patients (non-HIV-PJP) with interstitial lung disease (ILD) remain unclear. Our objectives were to describe the clinical characteristics and to explore the prognostic factors of non-HIV-ILD-PJP patients. (2) Methods: The enrolled patients in this retrospective study were stratified based on the presence or absence of ILD and fibrotic ILD (FILD). The log-rank test and Cox regression models were used to analyze the prognostic factors. (3) Results: Among 378 non-HIV-PJP patients, there were 133 patients with ILD-PJP, and 70 patients were classified as having FILD-PJP. The all-cause mortality rate for the ILD-PJP group is higher than that of the ILD-PJP group (57.9% vs. 38.4%, p < 0.001). However, the all-cause mortality is similar between the FILD-PJP group and non-FILD-PJP group. Preexisting ILD (HR: 2.156, p = 0.003) and honeycomb appearance on the chest HRCT (HR = 16.3, p < 0.001) are independent survival risk factors for ILD-PJP. Non-invasive ventilation is an independent survival risk factor for ILD-PJP patients (HR = 928.56, p < 0.01) and FILD-PJP patients (HR = 33.86, p < 0.001). (4) Conclusions: Pre-existing ILD and honeycomb appearance on the chest HRCT are independent survival risk factors for PJP patients. Non-invasive ventilation is associated with poor survival for both ILD-PJP and FILD-PJP patients.
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Dabiri M, Jehangir M, Khoshpouri P, Chalian H. Hypersensitivity Pneumonitis: A Pictorial Review Based on the New ATS/JRS/ALAT Clinical Practice Guideline for Radiologists and Pulmonologists. Diagnostics (Basel) 2022; 12:diagnostics12112874. [PMID: 36428934 PMCID: PMC9689332 DOI: 10.3390/diagnostics12112874] [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: 10/14/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 11/22/2022] Open
Abstract
Hypersensitivity pneumonitis (HP) is a complicated and heterogeneous interstitial lung disease (ILD) caused by an excessive immune response to an inhaled antigen in susceptible individuals. Accurate diagnosis of HP is difficult and necessitates a detailed exposure history, as well as a multidisciplinary discussion of clinical, histopathologic, and radiologic data. We provide a pictorial review based on the latest American Thoracic Society (ATS)/Japanese Respiratory Society (JRS)/Asociación Latinoamericana del Tórax (ALAT) guidelines for diagnosing HP through demonstrating new radiologic terms, features, and a new classification of HP which will benefit radiologists and pulmonologists.
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Affiliation(s)
- Mona Dabiri
- Department of Radiology, Children’s Medical Center, Tehran University of Medical Science, Tehran 14176-14411, Iran
| | - Maham Jehangir
- Cardiothoracic Imaging, Department of Radiology, Rush University Medical Center, Chicago, IL 60612, USA
| | - Pegah Khoshpouri
- Department of Radiology, University of Washington, Seattle, WA 98105, USA
| | - Hamid Chalian
- Cardiothoracic Imaging, Department of Radiology, University of Washington, Seattle, WA 98105, USA
- Correspondence: ; Tel.: +1-206-598-7453
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209
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Tsukuda TK, Ohnishi H, Fujimoto M, Nakatani Y, Takamatsu K, Naka T, Yokoyama A. Lung CCR6 -CXCR3 - type 2 helper T cells as an indicator of progressive fibrosing interstitial lung diseases. Sci Rep 2022; 12:19577. [PMID: 36380088 PMCID: PMC9666512 DOI: 10.1038/s41598-022-24011-0] [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: 03/31/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022] Open
Abstract
Progressive fibrosing interstitial lung diseases (PF-ILDs) have a poor prognosis and may be resistant to corticosteroids and/or immunosuppressants, but antifibrotic therapies such as nintedanib and pirfenidone have been shown to slow the deterioration of lung function. The aim of this study was to identify the characteristic cellular profile of bronchoalveolar lavage fluid at diagnostic bronchoscopy for predicting PF-ILDs, defined as fibrotic diseases on chest high-resolution computed tomography with more than a 5% relative decline in the percent predicted value of forced vital capacity (FVC) over 6 months. The proportions of inflammatory cells, CCR6-CXCR3- T helper type 2 (Th2) cells among conventional CD4+ T cells in bronchoalveolar lavage fluid (BALF) and peripheral blood, were measured by flowcytometry. The proportion of lymphocytes in BALF was significantly higher in non-PF-ILD patients than in PF-ILD patients. The proportion of Th2 cells in BALF, but not in peripheral blood, was significantly higher in PF-ILD patients than in non-PF-ILD patients. Multivariate analysis showed that a greater population of Th2 cells in BALF was the only indicator for PF-ILDs. An increased proportion of Th2 cells in BALF is associated with greater deterioration of lung function in fibrotic interstitial lung diseases.
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Affiliation(s)
- Tsukie Kin Tsukuda
- grid.278276.e0000 0001 0659 9825Department of Respiratory Medicine and Allergology, Kochi Medical School, Kochi University, Kohasu, Oko-Cho, Nankoku, Kochi 783-8505 Japan
| | - Hiroshi Ohnishi
- grid.278276.e0000 0001 0659 9825Department of Respiratory Medicine and Allergology, Kochi Medical School, Kochi University, Kohasu, Oko-Cho, Nankoku, Kochi 783-8505 Japan
| | - Minoru Fujimoto
- grid.278276.e0000 0001 0659 9825Center for the Intractable Immune Disease, Kochi Medical School, Kochi University, Nankoku, Japan ,grid.411790.a0000 0000 9613 6383Division of Allergy and Rheumatology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Morioka, Japan
| | - Yu Nakatani
- grid.278276.e0000 0001 0659 9825Department of Respiratory Medicine and Allergology, Kochi Medical School, Kochi University, Kohasu, Oko-Cho, Nankoku, Kochi 783-8505 Japan
| | - Kazufumi Takamatsu
- grid.278276.e0000 0001 0659 9825Department of Respiratory Medicine and Allergology, Kochi Medical School, Kochi University, Kohasu, Oko-Cho, Nankoku, Kochi 783-8505 Japan
| | - Tetsuji Naka
- grid.278276.e0000 0001 0659 9825Center for the Intractable Immune Disease, Kochi Medical School, Kochi University, Nankoku, Japan ,grid.411790.a0000 0000 9613 6383Division of Allergy and Rheumatology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Morioka, Japan
| | - Akihito Yokoyama
- grid.278276.e0000 0001 0659 9825Department of Respiratory Medicine and Allergology, Kochi Medical School, Kochi University, Kohasu, Oko-Cho, Nankoku, Kochi 783-8505 Japan
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210
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Lewandowska KB, Barańska I, Sobiecka M, Radwan-Rohrenschef P, Dybowska M, Franczuk M, Roży A, Skoczylas A, Bestry I, Kuś J, Tomkowski WZ, Szturmowicz M. Factors Predictive for Immunomodulatory Therapy Response and Survival in Patients with Hypersensitivity Pneumonitis-Retrospective Cohort Analysis. Diagnostics (Basel) 2022; 12:diagnostics12112767. [PMID: 36428827 PMCID: PMC9689222 DOI: 10.3390/diagnostics12112767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/06/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
Hypersensitivity pneumonitis (HP) is one of the interstitial lung diseases with clearly established diagnostic criteria. Nevertheless, pharmacologic treatment recommendations are still lacking. Most specialists use steroids as first-line drugs, sometimes combined with an immunosuppressive agent. Aim: The aim of the present retrospective study was to establish predictive factors for treatment success and survival advantage in HP patients. Methods: We analyzed the short-term treatment outcome and overall survival in consecutive HP patients treated with prednisone alone or combined with azathioprine. Results: The study group consisted of 93 HP patients, 54 (58%) with fibrotic HP and 39 (42%) with non-fibrotic HP. Mean (± SD) VCmax % pred. and TL,co % pred. before treatment initiation were 81.5 (±20.8)% and 48.3 (±15.7)%, respectively. Mean relative VCmax and TL,co change after 3−6 months of therapy were 9.5 (±18.8)% and 21.4 (±35.2)%, respectively. The short-term treatment outcomes were improvement in 49 (53%) patients, stabilization in 16 (17%) patients, and progression in 28 (30%) patients. Among those with fibrotic HP, improvement was noted in 19 (35%) cases. Significant positive treatment outcome predictors were fever after antigen exposure, lymphocyte count in broncho-alveolar lavage fluid (BALF) exceeding 54%, RV/TLC > 120% pred., and ill-defined centrilobular nodules in high-resolution computed tomography (HRCT). An increased eosinophil count in BALF and fibrosis in HRCT were significant negative treatment outcome predictors. The presence of fibrosis in HRCT remained significant in a multivariate analysis. A positive response to treatment, as well as preserved baseline VCmax (% pred.) and TLC (% pred.), predicted longer survival, while fibrosis in HRCT was related to a worse prognosis. Conclusion: Immunomodulatory treatment may be effective in a significant proportion of patients with HP, including those with fibrotic changes in HRCT. Therefore, future trials are urgently needed to establish the role of immunosuppressive treatment in fibrotic HP.
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Affiliation(s)
- Katarzyna B. Lewandowska
- 1st Department of Lung Diseases, National Research Institute of Tuberculosis and Lung Diseases, 01-138 Warsaw, Poland
- Correspondence:
| | - Inga Barańska
- Department of Radiology, National Research Institute of Tuberculosis and Lung Diseases, 01-138 Warsaw, Poland
| | - Małgorzata Sobiecka
- 1st Department of Lung Diseases, National Research Institute of Tuberculosis and Lung Diseases, 01-138 Warsaw, Poland
| | - Piotr Radwan-Rohrenschef
- 1st Department of Lung Diseases, National Research Institute of Tuberculosis and Lung Diseases, 01-138 Warsaw, Poland
| | - Małgorzata Dybowska
- 1st Department of Lung Diseases, National Research Institute of Tuberculosis and Lung Diseases, 01-138 Warsaw, Poland
| | - Monika Franczuk
- Department of Respiratory Physiopathology, National Research Institute of Tuberculosis and Lung Diseases, 01-138 Warsaw, Poland
| | - Adriana Roży
- Department of Genetics and Clinical Immunology, National Research Institute of Tuberculosis and Lung Diseases, 01-138 Warsaw, Poland
| | - Agnieszka Skoczylas
- Department of Geriatrics, National Institute of Geriatrics, Rheumatology and Rehabilitation, 02-637 Warsaw, Poland
| | - Iwona Bestry
- Department of Radiology, National Research Institute of Tuberculosis and Lung Diseases, 01-138 Warsaw, Poland
| | - Jan Kuś
- 1st Department of Lung Diseases, National Research Institute of Tuberculosis and Lung Diseases, 01-138 Warsaw, Poland
| | - Witold Z. Tomkowski
- 1st Department of Lung Diseases, National Research Institute of Tuberculosis and Lung Diseases, 01-138 Warsaw, Poland
| | - Monika Szturmowicz
- 1st Department of Lung Diseases, National Research Institute of Tuberculosis and Lung Diseases, 01-138 Warsaw, Poland
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211
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Barnes H, Chambers D, Grainge C, Corte TJ, Bastiampillai S, Frenkel S, Westall G, Collard H, Glaspole I. Clinical utility of a standardized chronic hypersensitivity pneumonitis exposure questionnaire. Respirology 2022; 28:366-372. [PMID: 36336654 DOI: 10.1111/resp.14404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 10/20/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND AND OBJECTIVE Identification of an exposure is integral to the diagnosis, management, and prognostication of chronic hypersensitivity pneumonitis (CHP). Standardized questionnaires may aid in the identification of exposures, however, there currently are no evidence-based patient-validated questionnaires available. Key qualifiers (including duration and frequency) which indicate exposure relevance are also poorly defined. This study assessed the use of a standardized CHP exposure questionnaire in the identification of exposures and diagnostic confidence of CHP. METHODS People with a multi-disciplinary meeting (MDM) diagnosis from five Australian interstitial lung disease (ILD) expert centres who provided informed consent were included. Participants completed a previously developed standardized CHP Exposure Questionnaire. Responses were collected with the participant's MDM data, including diagnosis, diagnostic confidence, and clinician-elicited exposures. RESULTS One hundred thirty participants (IPF = 58, CHP = 24, CTD-ILD = 17, unclassifiable = 19, other = 12) were included. In 33% of CHP participants, a standardized questionnaire elicited an exposure where the clinician did not. 63% of these had provisional low confidence CHP; and an exposure history would have increased the diagnostic confidence in these cases. Using the standardized questionnaire, 96% of CHP participants reporting any exposure, compared with 75% of non-HP ILD participants. CHP participants were 3.5 times more likely (p = 0.004) to report their symptoms improved on avoidance, and 2.3 times more likely (p = 0.018) to report daily frequent exposure, compared with non-HP ILDs. CONCLUSION A standardized questionnaire which elicits exposure characteristics in addition to presence or absence of relevant exposures can increase the diagnostic confidence of CHP and reduce the proportion of antigen-indeterminate CHP.
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Affiliation(s)
- Hayley Barnes
- Central Clinical School Monash University Melbourne Victoria Australia
- Department of Respiratory Medicine The Alfred Hospital Melbourne Victoria Australia
| | - Daniel Chambers
- Queensland Lung Transplant Program The Prince Charles Hospital Brisbane Queensland Australia
- Faculty of Medicine The University of Queensland Brisbane Queensland Australia
| | - Chris Grainge
- Department of Respiratory and Sleep Medicine John Hunter Hospital Newcastle New South Wales Australia
- Faculty of Health and Medicine University of Newcastle Callaghan New South Wales Australia
| | - Tamera J. Corte
- Department of Respiratory Medicine Royal Prince Alfred Hospital Sydney New South Wales Australia
- University of Sydney Sydney New South Wales Australia
| | | | - Simon Frenkel
- Department of Respiratory Medicine Western Hospital Footscray Victoria Australia
| | - Glen Westall
- Central Clinical School Monash University Melbourne Victoria Australia
- Department of Respiratory Medicine The Alfred Hospital Melbourne Victoria Australia
| | - Harold Collard
- Department of Medicine University of California San Francisco California USA
| | - Ian Glaspole
- Central Clinical School Monash University Melbourne Victoria Australia
- Department of Respiratory Medicine The Alfred Hospital Melbourne Victoria Australia
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212
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Greenberger PA. Identifying and classifying patients with hypersensitivity pneumonitis as fibrotic or nonfibrotic instead of as acute, subacute, or chronic. Ann Allergy Asthma Immunol 2022; 129:544-545. [DOI: 10.1016/j.anai.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022]
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213
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Giménez Palleiro A, Mazzini S, Franquet T. Patrones básicos en la TCAR de la enfermedad pulmonar intersticial difusa. RADIOLOGIA 2022. [DOI: 10.1016/j.rx.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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214
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Koster MA. Hypersensitivity Pneumonitis: An Updated Diagnostic Guide for Internists. Med Clin North Am 2022; 106:1055-1065. [PMID: 36280332 DOI: 10.1016/j.mcna.2022.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This summary highlights updated definitions, terminology, and classification systems proposed in the diagnosis of hypersensitivity pneumonitis. Clinical presentation, epidemiology, and pathophysiology are reviewed from the most recent data. Radiographic and histopathologic diagnostic criteria are presented in a manner relevant to the practice of general medicine internists, including new guideline recommendations. The role of adjunctive tests, such as serum IgG testing, bronchoalveolar lavage lymphocyte analysis, and pulmonary function testing is discussed in the context of supporting diagnostic confidence for hypersensitivity pneumonitis diagnosis. Finally, new diagnostic algorithms are synthesized and applied to the general internal medicine setting.
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Affiliation(s)
- Megan A Koster
- Division of Pulmonary and Critical Care, Department of Medicine, Mount Auburn Hospital, Harvard Medical School, 300 Mount Auburn Street, # 419, Cambridge, MA 02138, USA.
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215
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Updated Imaging Classification of Hypersensitivity Pneumonitis. Radiol Clin North Am 2022; 60:901-913. [DOI: 10.1016/j.rcl.2022.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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216
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[Not Available]. CMAJ 2022; 194:E1360-E1364. [PMID: 36220168 PMCID: PMC9616154 DOI: 10.1503/cmaj.220052-f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Co-modulation of T cells and B cells enhances the inhibition of inflammation in experimental hypersensitivity pneumonitis. Respir Res 2022; 23:275. [PMID: 36209215 PMCID: PMC9547367 DOI: 10.1186/s12931-022-02200-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022] Open
Abstract
Background Hypersensitivity pneumonitis (HP) is an interstitial lung disease characterized by antigen-triggered neutrophilic exacerbations. Although CD4+ T cells are sufficient for HP pathogenesis, this never translated into efficient T cell-specific therapies. Increasing evidence shows that B cells also play decisive roles in HP. Here, we aimed to further define the respective contributions of B and T cells in subacute experimental HP.
Methods Mice were subjected to a protocol of subacute exposure to the archaeon Methanosphaera stadmanae to induce experimental HP. Using models of adoptive transfers of B cells and T cells in Rag1-deficient mice and of B cell-specific S1P1 deletion, we assessed the importance of B cells in the development of HP by evaluating inflammation in bronchoalveolar lavage fluid. We also aimed to determine if injected antibodies targeting B and/or T cells could alleviate HP exacerbations using a therapeutic course of intervention. Results Even though B cells are not sufficient to induce HP, they strongly potentiate CD4+ T cell-induced HP‑associated neutrophilic inflammation in the airways. However, the reduction of 85% of lung B cells in mice with a CD19-driven S1P1 deletion does not dampen HP inflammation, suggesting that lung B cells are not necessary in large numbers to sustain local inflammation. Finally, we found that injecting antibodies targeting B cells after experimental HP was induced does not dampen neutrophilic exacerbation. Yet, injection of antibodies directed against B cells and T cells yielded a potent 76% inhibition of neutrophilic accumulation in the lungs. This inhibition occurred despite partial, sometimes mild, depletion of B cells and T cells subsets. Conclusions Although B cells are required for maximal inflammation in subacute experimental HP, partial reduction of B cells fails to reduce HP-associated inflammation by itself. However, co-modulation of T cells and B cells yields enhanced inhibition of HP exacerbation caused by an antigenic rechallenge. Supplementary Information The online version contains supplementary material available at 10.1186/s12931-022-02200-9.
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218
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Zhang L, Xie T, Li Y, Zhang B, Fu Y, Ding Y, Wu H. Diagnostic value and safety of medical thoracoscopy under local anesthesia for unexplained diffuse interstitial lung disease: A retrospective study. Chron Respir Dis 2022; 19:14799731221133389. [PMID: 36206158 PMCID: PMC9549086 DOI: 10.1177/14799731221133389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objective We aimed to explore the safety and diagnostic value of medical thoracoscopic
lung biopsy in patients with unexplained diffuse interstitial lung disease
(ILD) in a single center pilot study. Method We retrospectively analyzed clinical and pathological diagnostic data from 52
patients with diffuse ILD undergoing medical thoracoscopic lung biopsy. Results Forty-four cases of diffuse ILD were confirmed pathologically, giving a
diagnostic rate of 84.6%. Among these 44 patients, 11 patients were
diagnosed with cancer, including eight patients with lung adenocarcinoma,
three patients with metastases; two from a gastrointestinal malignancy, and
one from a granulosa cell tumor of the ovary. There were 17 cases of
idiopathic interstitial pneumonia, including nine cases of usual
interstitial pneumonia (UIP), four cases of non-specific interstitial
pneumonia (NSIP), three cases of cryptogenic organizing pneumonia (COP), and
one case of acute interstitial pneumonia (AIP). There were 12 cases of rare
interstitial pneumonias, which included six cases of pulmonary alveolar
proteinosis, one case each of pulmonary Langerhans cell histiocytosis (LCH)
and pulmonary lymphangiomyomatosis, two cases of nodular sarcoidosis, and
two cases of chronic eosinophilic pneumonia. We recorded various
complications, including bleeding, infection, and pneumothorax. A total of
28 patients (53.8%) experienced at least one of the above complications, but
there were no deaths associated with biopsy. Conclusions Medical thoracoscopic lung biopsy appears a safe and effective method for
diagnosing diffuse ILD of unknown cause but further prospective studies,
with larger numbers, including comparison with other established techniques
are required.
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Affiliation(s)
| | | | | | | | | | | | - Haihong Wu
- Haihong Wu, Department of Pulmonary and
Critical Care Medicine, Hainan General Hospital, Hainan Affiliated Hospital of
Hainan Medical University, No.19, Xiuhua Road, Xiuying District, Haikou City,
Hainan Province 570311, China.
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Cottin V, Martinez FJ, Smith V, Walsh SLF. Multidisciplinary teams in the clinical care of fibrotic interstitial lung disease: current perspectives. Eur Respir Rev 2022; 31:220003. [PMID: 38743511 DOI: 10.1183/16000617.0003-2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 07/04/2022] [Indexed: 11/05/2022] Open
Abstract
Multidisciplinary team (MDT) meetings, involving the integrated collaboration of healthcare professionals, are increasingly used in clinical practice to inform the diagnosis and treatment of interstitial lung diseases (ILDs). Over time, the assessment of patients with ILD has transitioned from discussions among clinicians, radiologists and pathologists to the inclusion of a broader range of clinical data and specialist expertise. Studies have shown that a multidisciplinary approach can have many benefits for the clinical care of patients with ILD by improving the diagnostic confidence for different ILDs and guiding treatment decisions. The utility of MDT discussions for diagnosis, monitoring disease progression and management decisions, will need to be considered based on how it is best positioned in the diagnostic and therapeutic process, as well as the practicality and challenges of its use. There are also uncertainties and heterogeneity concerning the optimal practices of MDT meetings in ILD care. In this review, we describe recent developments refining the approach to MDTs in clinical practice, including who should be involved in the MDTs, when it is most needed, their use in patient management, challenges in their implementation, and ongoing controversies in the field that need further research.
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Affiliation(s)
- Vincent Cottin
- Louis Pradel Hospital, Reference Centre for Rare Pulmonary Diseases, Hospices Civils de Lyon, Lyon, France
- Claude Bernard University Lyon 1, UMR754, INRAE, Member of OrphaLung, RespiFil, Radico-ILD and ERN-LUNG, Lyon, France
| | | | - Vanessa Smith
- Dept of Rheumatology, Ghent University Hospital Dept of Internal Medicine, Ghent, Belgium
| | - Simon L F Walsh
- National Heart and Lung Institute, Imperial College London, London, UK
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220
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Ahlawat P, Upadhyay P, Madaan P. A Sensitive Approach to Managing Hypersensitivity Pneumonitis. Cureus 2022; 14:e29738. [PMID: 36340528 PMCID: PMC9621725 DOI: 10.7759/cureus.29738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2022] [Indexed: 11/21/2022] Open
Abstract
Hypersensitivity pneumonitis (HP), also known as extrinsic allergic alveolitis, is an immunologically mediated disorder that typically presents as a case of interstitial lung disease (ILD) in response to any identified or unidentified antigen. We present a case of a 46-year-old female with HP, who presented with fever and shortness of breath. Although negative by real-time reverse transcription-polymerase chain reaction (RT-PCR), her condition was initially diagnosed as COVID-19 clinically as a result of anchoring bias due to similar symptoms and radiologic features presenting in the pandemic. A detailed further probing into history revealed the diagnosis of HP due to cat hair, and hence, was managed accordingly.
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221
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Glenn LM, Troy LK, Corte TJ. Diagnosing interstitial lung disease by multidisciplinary discussion: A review. Front Med (Lausanne) 2022; 9:1017501. [PMID: 36213664 PMCID: PMC9532594 DOI: 10.3389/fmed.2022.1017501] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 09/05/2022] [Indexed: 11/13/2022] Open
Abstract
The multidisciplinary meeting (MDM) has been endorsed in current international consensus guidelines as the gold standard method for diagnosis of interstitial lung disease (ILD). In the absence of an accurate and reliable diagnostic test, the agreement between multidisciplinary meetings has been used as a surrogate marker for diagnostic accuracy. Although the ILD MDM has been shown to improve inter-clinician agreement on ILD diagnosis, result in a change in diagnosis in a significant proportion of patients and reduce unclassifiable diagnoses, the ideal form for an ILD MDM remains unclear, with constitution and processes of ILD MDMs varying greatly around the world. It is likely that this variation of practice contributes to the lack of agreement seen between MDMs, as well as suboptimal diagnostic accuracy. A recent Delphi study has confirmed the essential components required for the operation of an ILD MDM. The ILD MDM is a changing entity, as it incorporates new diagnostic tests and genetic markers, while also adapting in its form in response to the obstacles of the COVID-19 pandemic. The aim of this review was to evaluate the current evidence regarding ILD MDM and their role in the diagnosis of ILD, the practice of ILD MDM around the world, approaches to ILD MDM standardization and future directions to improve diagnostic accuracy in ILD.
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Affiliation(s)
- Laura M. Glenn
- Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
- The University of Sydney School of Medicine (Central Clinical School), Sydney, NSW, Australia
- National Health and Medical Research Council (NHMRC) Centre of Research Excellence in Pulmonary Fibrosis, Camperdown, NSW, Australia
- *Correspondence: Laura M. Glenn
| | - Lauren K. Troy
- Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
- The University of Sydney School of Medicine (Central Clinical School), Sydney, NSW, Australia
- National Health and Medical Research Council (NHMRC) Centre of Research Excellence in Pulmonary Fibrosis, Camperdown, NSW, Australia
| | - Tamera J. Corte
- Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
- The University of Sydney School of Medicine (Central Clinical School), Sydney, NSW, Australia
- National Health and Medical Research Council (NHMRC) Centre of Research Excellence in Pulmonary Fibrosis, Camperdown, NSW, Australia
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222
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Wijsenbeek M, Suzuki A, Maher TM. Interstitial lung diseases. Lancet 2022; 400:769-786. [PMID: 35964592 DOI: 10.1016/s0140-6736(22)01052-2] [Citation(s) in RCA: 99] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 03/14/2022] [Accepted: 06/03/2022] [Indexed: 02/07/2023]
Abstract
Over 200 interstitial lung diseases, from ultra rare to relatively common, are recognised. Most interstitial lung diseases are characterised by inflammation or fibrosis within the interstitial space, the primary consequence of which is impaired gas exchange, resulting in breathlessness, diminished exercise tolerance, and decreased quality of life. Outcomes vary considerably for each of the different interstitial lung diseases. In some conditions, spontaneous reversibility or stabilisation can occur, but unfortunately in many people with interstitial lung disease, especially in those manifesting progressive pulmonary fibrosis, respiratory failure and death are a sad reality. Over the past 3 years, the field of interstitial lung disease has had important advances, with the approval of drugs to treat systemic sclerosis-associated interstitial lung disease, interstitial lung disease-associated pulmonary hypertension, and different forms of progressive pulmonary fibrosis. This Seminar provides an update on epidemiology, pathogenesis, presentation, diagnosis, disease course, and management of the interstitial lung diseases that are most frequently encountered in clinical practice. Furthermore, we describe how developments have led to a shift in the classification and treatment of interstitial lung diseases that exhibit progressive pulmonary fibrosis and summarise the latest practice-changing guidelines. We conclude with an outline of controversies, uncertainties, and future directions.
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Affiliation(s)
- Marlies Wijsenbeek
- Center for Interstitial Lung Diseases and Sarcoidosis, Department of Respiratory Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.
| | - Atsushi Suzuki
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Aichi, Japan
| | - Toby M Maher
- Hastings Centre for Pulmonary Research and Division of Pulmonary, Critical Care and Sleep Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA; National Heart and Lung Institute, Imperial College London, London, UK
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223
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Sodhi A, Pisani M, Glassberg MK, Bourjeily G, D'Ambrosio C. Sex and Gender in Lung Disease and Sleep Disorders: A State-of-the-Art Review. Chest 2022; 162:647-658. [PMID: 35300976 PMCID: PMC9808608 DOI: 10.1016/j.chest.2022.03.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 03/08/2022] [Accepted: 03/08/2022] [Indexed: 01/13/2023] Open
Abstract
The terms sex and gender often are used interchangeably, but have specific meaning when it comes to their effects on lung disease. Ample evidence is now available that sex and gender affect the incidence, susceptibility, presentation, diagnosis, and severity of many lung diseases. Some conditions are more prevalent in women, such as asthma. Other conditions are seen almost exclusively in women, like lymphangioleiomyomatosis. Some life stages-such as pregnancy-are unique to women and can affect the onset and course of lung disease. Clinical presentation may differ as well, such as higher number of exacerbations experienced by women with COPD and greater cardiovascular morbidity in women with sleep-disordered breathing. In addition, response to therapy and medication safety may also differ by sex, and yet, pharmacogenomic factors often are not addressed adequately in clinical trials. Various aspects of lung and sleep biology and pathobiology are impacted by female sex and female reproductive transitions. Differential gene expression or organ development can be impacted by these biological differences. Understanding these differences is the first step in moving toward precision medicine for women. This article is a state-of-the-art review of specific effects of sex and gender focused on epidemiology, disease presentation, risk factors, and management of lung diseases. Pathobiological mechanisms explaining sex differences in these diseases are beyond the scope of this article. We review the literature and focus on recent guidelines about using sex and gender in research. We also review sex and gender differences in lung diseases.
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Affiliation(s)
- Amik Sodhi
- Division of Allergy, Pulmonary and Critical Care Medicine, University of Wisconsin, Madison, WI
| | - Margaret Pisani
- Division of Pulmonary, Critical Care and Sleep Medicine, Yale University School of Medicine, New Haven, CT
| | - Marilyn K Glassberg
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Arizona College of Medicine Phoenix, Phoenix, AR
| | - Ghada Bourjeily
- Division of Pulmonary, Critical Care and Sleep Medicine, Brown University, Providence, RI
| | - Carolyn D'Ambrosio
- Division of Pulmonary, Critical Care and Sleep Medicine, Yale University School of Medicine, New Haven, CT.
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224
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Kypreos M, Batra K, Glazer CS, Adams TN. Impact of number and type of identified antigen on transplant-free survival in hypersensitivity pneumonitis. PLoS One 2022; 17:e0273544. [PMID: 36048790 PMCID: PMC9436128 DOI: 10.1371/journal.pone.0273544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 08/10/2022] [Indexed: 11/26/2022] Open
Abstract
Background Identification of inciting antigen can affect diagnostic confidence, quality of life, and prognosis in patients with HP. It is unknown whether the number and type of antigen affect results of diagnostic testing or prognosis, whether antigen identified by clinical history alone affects prognosis, and whether feather exposure is associated with outcomes similar to those of other antigens. Methods To evaluate whether the number or type of antigen identified by clinical history alone affects clinical outcomes, we evaluated a retrospective cohort of patients with a high or definite probability of HP based on recent guidelines. Results In our retrospective cohort, 136 patients met high or definite probability of HP and were included in the analysis. Median transplant-free survival was better in patients with antigen identified on clinical history alone than patients without identified antigen. Feather exposure was associated with improved TFS compared to patients without antigen identified; there was no difference in TFS between patients with feather exposure and either mold or live bird exposure. Mold antigen was associated with increased risk of fibrotic HP compared to avian antigen. Among patients with identified antigen, the number and type of antigen did not affect TFS. Discussion Our study suggests that clinical history is adequate for providing prognostic information to patients with HP and classifying the diagnostic probability of HP according to recent guidelines. Feather exposure should be considered an inciting antigen in patients with ILD.
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Affiliation(s)
- Margaret Kypreos
- Division of Pulmonary and Critical Care Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
| | - Kiran Batra
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
| | - Craig S. Glazer
- Division of Pulmonary and Critical Care Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
| | - Traci N. Adams
- Division of Pulmonary and Critical Care Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
- * E-mail:
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225
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Integration and Application of Clinical Practice Guidelines for the Diagnosis of Idiopathic Pulmonary Fibrosis and Fibrotic Hypersensitivity Pneumonitis. Chest 2022; 162:614-629. [DOI: 10.1016/j.chest.2022.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/12/2022] [Accepted: 06/07/2022] [Indexed: 11/18/2022] Open
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226
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Sánchez-Díez S, Munoz X, Ojanguren I, Romero-Mesones C, Espejo D, Villar A, Gómez-Olles S, Cruz MJ. YKL-40 and KL-6 Levels in Serum and Sputum of Patients Diagnosed With Hypersensitivity Pneumonitis. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2022; 10:2414-2423. [PMID: 35788062 DOI: 10.1016/j.jaip.2022.06.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 06/16/2022] [Accepted: 06/18/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND YKL-40 (chitinase 3-like-1) and Krebs von den Lungen-6 (KL-6) are 2 promising biomarkers that may have an important role in the management of interstitial lung diseases (ILD). OBJECTIVE The aim of this study was to investigate the values of KL-6 and YKL-40 as biomarkers in the diagnosis and prognosis of patients with hypersensitivity pneumonitis (HP). METHODS A cross-sectional study conducted in 49 patients diagnosed with HP due to exposure to birds (n = 32) or fungi (n = 17), 48 patients with other ILD, and 67 healthy volunteers. Patients with HP were divided into fibrotic and nonfibrotic. Serum and sputum YKL-40 and KL-6 levels were determined using commercial enzyme-linked immunosorbent assay kits. Receiver operating characteristic (ROC) curves were used to determine the sensitivity and specificity of both biomarkers for the diagnosis of HP. Pulmonary function tests were performed in patients during follow-up. RESULTS KL-6 and YKL-40 levels were significantly higher in serum of patients with HP exposed to birds with a fibrotic pattern than in controls (P < .0001 and .0055, respectively). Serum KL-6 levels were also significantly higher in patients with fibrotic HP exposed to fungi compared with the control group (P = .0001). In patients with HP exposed to fungi, sputum KL-6 and YKL-40 levels were higher in those with a fibrotic pattern (P = .0289 and .016, respectively). ROC analysis showed that the range between 55-121 ng/mL for serum YKL-40 levels and 346-1441 U/mL for serum KL-6 levels had the best sensitivity and specificity for discriminating between patients with HP, healthy controls, and patients with idiopathic pulmonary fibrosis (IPF). In patients with HP, serum KL-6 levels correlated negatively with total lung capacity (r = -0.485; P = .0103) and diffusing capacity of the lungs for carbon monoxide (r = -0.534; P = .0002) at 12 months. CONCLUSIONS Both KL-6 and YKL-40 proteins seem to be capable of distinguishing patients with HP from healthy individuals and from patients with IPF. Their sensitivity and specificity confirm their potential role as biomarkers. KL-6 may also be a predictor of disease progression.
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Affiliation(s)
- Silvia Sánchez-Díez
- Pulmonology Service, Department of Medicine, Vall d'Hebron University Hospital, Autonomous University of Barcelona, Barcelona, Spain; CIBER of Respiratory Diseases (CIBERES), Madrid, Spain
| | - Xavier Munoz
- Pulmonology Service, Department of Medicine, Vall d'Hebron University Hospital, Autonomous University of Barcelona, Barcelona, Spain; CIBER of Respiratory Diseases (CIBERES), Madrid, Spain; Department of Cell Biology, Physiology and Immunology, Autonomous University of Barcelona, Barcelona, Spain.
| | - Iñigo Ojanguren
- Pulmonology Service, Department of Medicine, Vall d'Hebron University Hospital, Autonomous University of Barcelona, Barcelona, Spain; CIBER of Respiratory Diseases (CIBERES), Madrid, Spain
| | - Christian Romero-Mesones
- Pulmonology Service, Department of Medicine, Vall d'Hebron University Hospital, Autonomous University of Barcelona, Barcelona, Spain
| | - David Espejo
- Pulmonology Service, Department of Medicine, Vall d'Hebron University Hospital, Autonomous University of Barcelona, Barcelona, Spain
| | - Ana Villar
- Pulmonology Service, Department of Medicine, Vall d'Hebron University Hospital, Autonomous University of Barcelona, Barcelona, Spain
| | - Susana Gómez-Olles
- Pulmonology Service, Department of Medicine, Vall d'Hebron University Hospital, Autonomous University of Barcelona, Barcelona, Spain; CIBER of Respiratory Diseases (CIBERES), Madrid, Spain
| | - María-Jesús Cruz
- Pulmonology Service, Department of Medicine, Vall d'Hebron University Hospital, Autonomous University of Barcelona, Barcelona, Spain; CIBER of Respiratory Diseases (CIBERES), Madrid, Spain
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227
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Imaging of Cystic Lung Disease. Radiol Clin North Am 2022; 60:951-962. [DOI: 10.1016/j.rcl.2022.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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228
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Tandon YK, Walkoff L. Imaging Patterns in Occupational Lung Disease—When Should I Consider? Radiol Clin North Am 2022; 60:979-992. [DOI: 10.1016/j.rcl.2022.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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229
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Rechtin M, Koroscil M. Never Feed Birds in the Hot Tub! A Case of Bird-Fancier's Lung. Am J Med 2022; 135:1080-1082. [PMID: 35679880 DOI: 10.1016/j.amjmed.2022.05.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 05/16/2022] [Indexed: 11/17/2022]
Affiliation(s)
- Maria Rechtin
- Wright State University Boonshoft School of Medicine, Dayton, Ohio
| | - Matthew Koroscil
- Wright State University Boonshoft School of Medicine, Dayton, Ohio; United States Air Force, Wright-Patterson Air Force Base, Ohio.
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Mullin ML, Churg A, Ryerson CJ. Management of fibrotic hypersensitivity pneumonitis. Curr Opin Pulm Med 2022; 28:421-431. [PMID: 35861479 DOI: 10.1097/mcp.0000000000000904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
PURPOSE OF REVIEW Recent guidelines have updated the classification of hypersensitivity pneumonitis, stratifying by the presence or absence of fibrosis as either fibrotic or nonfibrotic hypersensitivity pneumonitis. Fibrotic hypersensitivity pneumonitis represents up to 10% of interstitial lung disease in large cohort studies, and is occasionally even more common in some regions; however, there are many unknown aspects to the diagnosis and management. The goal of this review article is to summarize the management of fibrotic hypersensitivity pneumonitis. RECENT FINDINGS Historically, the only treatment options for patients with hypersensitivity pneumonitis were antigen avoidance and corticosteroids, although other immunosuppressive therapies are increasingly endorsed by experts in the field. There is accumulating evidence that antifibrotic medications can be useful as a second-line therapy in some patients with fibrotic hypersensitivity pneumonitis who have progression despite immunosuppression. There remains no direct comparison of immunosuppressive vs. antifibrotic medication for the management of fibrotic hypersensitivity pneumonitis, but some clinical, radiological and pathological features may suggest greater likelihood of benefit from one option or the other. SUMMARY We anticipate that future treatment of fibrotic hypersensitivity pneumonitis will consider a variety of patient features to suggest the most prominent underlying biology that will then be used to guide initial pharmacotherapy; however, additional data are still needed.
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Affiliation(s)
| | - Andrew Churg
- Department of Pathology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Christopher J Ryerson
- Department of Medicine, University of British Columbia
- Centre for Heart Lung Innovation, St. Paul's Hospital
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231
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Development of a Knowledge-sharing Website for Hypersensitivity Pneumonitis Exposures. ATS Sch 2022; 3:460-467. [PMID: 36312801 PMCID: PMC9590405 DOI: 10.34197/ats-scholar.2021-0139in] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 08/08/2022] [Indexed: 11/18/2022] Open
Abstract
Background Identification of potential inciting antigens known to be associated with
hypersensitivity pneumonitis (HP) is integral to achieving a confident
diagnosis, its management, and prognostication. A barrier to achieving
diagnostic confidence is that evidence for exposure assessment is not
presented in an easily accessible or useful format. Objective To develop a freely available comprehensive living repository of
contemporaneous exposures associated with HP. Methods Electronic searches were performed through Medline, Embase, and Web of
Science from January 1, 2002, to December 31, 2019, using the following
broad MeSH headings: ([allerg* or
hypersensitiv*], and adj [alveol* or
pneumo*]).mp. Articles were included if they described
adults or children with a diagnosis of HP (as defined by authors) and a
description of the causative exposure. Website development used a structured
query language database and was powered by WordPress. Results HPLung.com is a freely available online searchable repository that lists all
exposures and antigens associated with HP and links to their parent studies.
Eighty-five unique exposures from 447 citations have been included thus far.
The website continues to be updated iteratively. Since its launch in 2019,
HPLung.com has been visited over 4,500 times by users from 75 different
countries. Conclusion HPLung.com is a novel knowledge-sharing tool that addresses barriers of
accessibility, contemporaneity, efficient evidence synthesis, and making the
best use of technological platforms to improve the exposure assessment of
those suspected of HP.
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Cottin V, Selman M, Inoue Y, Wong AW, Corte TJ, Flaherty KR, Han MK, Jacob J, Johannson KA, Kitaichi M, Lee JS, Agusti A, Antoniou KM, Bianchi P, Caro F, Florenzano M, Galvin L, Iwasawa T, Martinez FJ, Morgan RL, Myers JL, Nicholson AG, Occhipinti M, Poletti V, Salisbury ML, Sin DD, Sverzellati N, Tonia T, Valenzuela C, Ryerson CJ, Wells AU. Syndrome of Combined Pulmonary Fibrosis and Emphysema: An Official ATS/ERS/JRS/ALAT Research Statement. Am J Respir Crit Care Med 2022; 206:e7-e41. [PMID: 35969190 PMCID: PMC7615200 DOI: 10.1164/rccm.202206-1041st] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: The presence of emphysema is relatively common in patients with fibrotic interstitial lung disease. This has been designated combined pulmonary fibrosis and emphysema (CPFE). The lack of consensus over definitions and diagnostic criteria has limited CPFE research. Goals: The objectives of this task force were to review the terminology, definition, characteristics, pathophysiology, and research priorities of CPFE and to explore whether CPFE is a syndrome. Methods: This research statement was developed by a committee including 19 pulmonologists, 5 radiologists, 3 pathologists, 2 methodologists, and 2 patient representatives. The final document was supported by a focused systematic review that identified and summarized all recent publications related to CPFE. Results: This task force identified that patients with CPFE are predominantly male, with a history of smoking, severe dyspnea, relatively preserved airflow rates and lung volumes on spirometry, severely impaired DlCO, exertional hypoxemia, frequent pulmonary hypertension, and a dismal prognosis. The committee proposes to identify CPFE as a syndrome, given the clustering of pulmonary fibrosis and emphysema, shared pathogenetic pathways, unique considerations related to disease progression, increased risk of complications (pulmonary hypertension, lung cancer, and/or mortality), and implications for clinical trial design. There are varying features of interstitial lung disease and emphysema in CPFE. The committee offers a research definition and classification criteria and proposes that studies on CPFE include a comprehensive description of radiologic and, when available, pathological patterns, including some recently described patterns such as smoking-related interstitial fibrosis. Conclusions: This statement delineates the syndrome of CPFE and highlights research priorities.
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Affiliation(s)
- Vincent Cottin
- National Reference Center for Rare Pulmonary Diseases, Louis Pradel Hospital, Hospices Civils de Lyon, University of Lyon, INRAE, Lyon, France
| | - Moises Selman
- Instituto Nacional de Enfermedades Respiratorias “Ismael Cosío Villegas”, Mexico City, Mexico
| | | | | | - Tamera J. Corte
- Royal Prince Alfred Hospital and University of Sydney, Sydney, Australia
| | | | | | - Joseph Jacob
- University College London, London, United Kingdom
| | - Kerri A. Johannson
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, AB, Canada
| | | | - Joyce S. Lee
- University of Colorado Denver Anschutz Medical Campus, School of Medicine, Aurora, CO, USA
| | - Alvar Agusti
- Respiratory Institute, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERES, Barcelona, Spain
| | - Katerina M. Antoniou
- Laboratory of Molecular and Cellular Pneumonology, Department of Respiratory Medicine, University of Crete, Heraklion, Greece
| | | | - Fabian Caro
- Hospital de Rehabilitación Respiratoria "María Ferrer", Buenos Aires, Argentina
| | | | - Liam Galvin
- European idiopathic pulmonary fibrosis and related disorders federation
| | - Tae Iwasawa
- Kanagawa Cardiovascular and Respiratory Center, Yokohama, Japan
| | | | | | | | - Andrew G. Nicholson
- Royal Brompton and Harefield Hospitals, Guy’s and St Thomas’ NHS Foundation Trust and National Heart and Lung Institute, Imperial College, London, United Kingdom
| | | | | | | | - Don D. Sin
- University of British Columbia, Vancouver, Canada
| | - Nicola Sverzellati
- Scienze Radiologiche, Department of Medicine and Surgery, University of Parma, Italy
| | - Thomy Tonia
- Institute of Social and Preventive Medicine, University of Bern, Switzerland
| | - Claudia Valenzuela
- Pulmonology Department, Hospital Universitario de la Princesa, Departamento Medicina, Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Erratum for Table 2: Diagnosis of Hypersensitivity Pneumonitis in Adults. An Official ATS/JRS/ALAT Clinical Practice Guideline. Am J Respir Crit Care Med 2022; 206:518. [PMID: 35969192 DOI: 10.1164/rccm.v206erratum4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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234
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French practical guidelines for the diagnosis and management of idiopathic pulmonary fibrosis - 2021 update. Full-length version. Respir Med Res 2022; 83:100948. [PMID: 36630775 DOI: 10.1016/j.resmer.2022.100948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND Since the latest 2017 French guidelines, knowledge about idiopathic pulmonary fibrosis has evolved considerably. METHODS Practical guidelines were drafted on the initiative of the Coordinating Reference Center for Rare Pulmonary Diseases, led by the French Language Pulmonology Society (SPLF), by a coordinating group, a writing group, and a review group, with the involvement of the entire OrphaLung network, pulmonologists practicing in various settings, radiologists, pathologists, a general practitioner, a health manager, and a patient association. The method followed the "Clinical Practice Guidelines" process of the French National Authority for Health (HAS), including an online vote using a Likert scale. RESULTS After a literature review, 54 guidelines were formulated, improved, and then validated by the working groups. These guidelines addressed multiple aspects of the disease: epidemiology, diagnostic procedures, quality criteria and interpretation of chest CT scans, lung biopsy indication and procedures, etiological workup, methods and indications for family screening and genetic testing, assessment of the functional impairment and prognosis, indication and use of antifibrotic agents, lung transplantation, management of symptoms, comorbidities and complications, treatment of chronic respiratory failure, diagnosis and management of acute exacerbations of fibrosis. CONCLUSION These evidence-based guidelines are intended to guide the diagnosis and practical management of idiopathic pulmonary fibrosis.
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Towards Treatable Traits for Pulmonary Fibrosis. J Pers Med 2022; 12:jpm12081275. [PMID: 36013224 PMCID: PMC9410230 DOI: 10.3390/jpm12081275] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/24/2022] [Accepted: 07/29/2022] [Indexed: 11/17/2022] Open
Abstract
Interstitial lung diseases (ILD) are a heterogeneous group of disorders, of which many have the potential to lead to progressive pulmonary fibrosis. A distinction is usually made between primarily inflammatory ILD and primarily fibrotic ILD. As recent studies show that anti-fibrotic drugs can be beneficial in patients with primarily inflammatory ILD that is characterized by progressive pulmonary fibrosis, treatment decisions have become more complicated. In this perspective, we propose that the ‘treatable trait’ concept, which is based on the recognition of relevant exposures, various treatable phenotypes (disease manifestations) or endotypes (shared molecular mechanisms) within a group of diseases, can be applied to progressive pulmonary fibrosis. These targets for medical intervention can be identified through validated biomarkers and are not necessarily related to specific diagnostic labels. Proposed treatable traits are: cigarette smoking, occupational, allergen or drug exposures, excessive (profibrotic) auto- or alloimmunity, progressive pulmonary fibrosis, pulmonary hypertension, obstructive sleep apnea, tuberculosis, exercise intolerance, exertional hypoxia, and anxiety and depression. There are also several potential traits that have not been associated with relevant outcomes or for which no effective treatment is available at present: air pollution, mechanical stress, viral infections, bacterial burden in the lungs, surfactant-related pulmonary fibrosis, telomere-related pulmonary fibrosis, the rs35705950 MUC5B promoter polymorphism, acute exacerbations, gastro-esophageal reflux, dyspnea, and nocturnal hypoxia. The ‘treatable traits’ concept can be applied in new clinical trials for patients with progressive pulmonary fibrosis and could be used for developing new treatment strategies.
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Lee CT, Strek ME, Adegunsoye A, Wong AW, Assayag D, Cox G, Fell CD, Fisher JH, Gershon AS, Halayko AJ, Hambly N, Khalil N, Kolb M, Lok SD, Manganas H, Marcoux V, Morisset J, Sadatsafavi M, Shapera S, To T, Wilcox P, Ryerson CJ, Johannson KA. Inhalational exposures in patients with fibrotic interstitial lung disease: Presentation, pulmonary function and survival in the Canadian Registry for Pulmonary Fibrosis. Respirology 2022; 27:635-644. [PMID: 35512793 PMCID: PMC9296585 DOI: 10.1111/resp.14267] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 03/02/2022] [Accepted: 03/30/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVE Inhalational exposures are a known cause of interstitial lung disease (ILD), but little is understood about their prevalence across ILD subtypes and their relationship with pulmonary function and survival. METHODS Patients with fibrotic ILD were identified from the multicentre Canadian Registry for Pulmonary Fibrosis. Patients completed questionnaires regarding ILD-related occupational and environmental exposures. The relationship between exposures and the outcomes of baseline age, gender, family history, pulmonary function and survival was analysed using linear and logistic regression models, linear mixed-effect regression models and survival analysis using multivariable Cox proportional hazards along with the log-rank test. RESULTS There were 3820 patients included in this study, with 2385 (62%) having ILD-related inhalational exposure. Exposed patients were younger, particularly in the idiopathic pulmonary fibrosis subgroup. Inhalational exposure was associated with male gender (adjusted OR 1.46, 95% CI 1.28-1.68, p < 0.001) and family history of pulmonary fibrosis (adjusted OR 1.73, 95% CI 1.40-2.15, p < 0.001). Patients with any inhalational exposure had improved transplant-free survival (hazard ratio 0.81, 95% CI 0.71-0.92, p = 0.001); this effect persisted across diagnostic subtypes. The relationship between exposures and annual change in forced vital capacity varied by ILD subtype. CONCLUSION Patients with fibrotic ILD report high prevalence of inhalational exposures across ILD subtypes. These exposures were associated with younger age at diagnosis, male gender and family history of pulmonary fibrosis. Identification of an inhalational exposure was associated with a survival benefit. These findings suggest that inhaled exposures may impact clinical outcomes in patients with ILD, and future work should characterize the mechanisms underlying these relationships.
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Affiliation(s)
- Cathryn T. Lee
- Pulmonary and Critical Care MedicineUniversity of ChicagoChicagoIllinoisUSA
| | - Mary E. Strek
- Pulmonary and Critical Care MedicineUniversity of ChicagoChicagoIllinoisUSA
| | - Ayodeji Adegunsoye
- Pulmonary and Critical Care MedicineUniversity of ChicagoChicagoIllinoisUSA
| | - Alyson W. Wong
- Department of MedicineUniversity of British ColumbiaVancouverBritish ColumbiaCanada,Center for Heart Lung InnovationSt. Paul's HospitalVancouverBritish ColumbiaCanada
| | | | - Gerard Cox
- Medicine (Respirology)McMaster UniversityHamiltonOntarioCanada
| | | | | | | | - Andrew J. Halayko
- Physiology/Internal Medicine (Respirology)University of ManitobaWinnipegManitobaCanada
| | - Nathan Hambly
- Medicine (Respirology)McMaster UniversityHamiltonOntarioCanada
| | - Nasreen Khalil
- Division of Respiratory MedicineUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | - Martin Kolb
- Medicine (Respirology)McMaster UniversityHamiltonOntarioCanada
| | - Stacey D. Lok
- Department of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada
| | - Hélène Manganas
- Département de MédecineCentre Hospitalier de l'Université de MontréalMontrealQuebecCanada
| | - Veronica Marcoux
- Department of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada
| | - Julie Morisset
- Département de MédecineCentre Hospitalier de l'Université de MontréalMontrealQuebecCanada
| | - Mohsen Sadatsafavi
- Faculty of Pharmaceutical SciencesThe University of British ColumbiaVancouverBritish ColumbiaCanada
| | - Shane Shapera
- Department of MedicineUniversity of TorontoTorontoOntarioCanada
| | - Teresa To
- Research InstituteHospital for Sick ChildrenTorontoOntarioCanada
| | - Pearce Wilcox
- Department of MedicineUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | - Christopher J. Ryerson
- Department of MedicineUniversity of British ColumbiaVancouverBritish ColumbiaCanada,Center for Heart Lung InnovationSt. Paul's HospitalVancouverBritish ColumbiaCanada
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Lehtonen S, Kaarteenaho R. Bronchoalveolar-Lavage-Derived Fibroblast Cell Lines Provide Tools for Investigating Various Interstitial Lung Diseases. Cells 2022; 11:cells11142226. [PMID: 35883669 PMCID: PMC9318103 DOI: 10.3390/cells11142226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/08/2022] [Accepted: 07/12/2022] [Indexed: 01/25/2023] Open
Abstract
Bronchoalveolar lavage (BAL) is an important diagnostic and research tool for the investigation of various lung diseases. In addition to inflammatory and epithelial cells, BAL fluid may contain a small number of stromal cells, such as fibroblasts. During the past 30 years, a number of research groups have cultured BAL-derived fibroblasts for several passages in vitro. In addition to fibroblasts, these cultures have been reported to contain fibrocytes, myofibroblasts, and stem cells. We aim to present a summary of studies that have cultured stromal cells from BAL fluid.
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Affiliation(s)
- Siri Lehtonen
- PEDEGO Research Unit, University of Oulu, POB 8000, FIN-90014 Oulu, Finland;
- Department of Obstetrics and Gynecology, Medical Research Center Oulu, Oulu University Hospital, POB 10, FIN-90029 Oulu, Finland
| | - Riitta Kaarteenaho
- Research Unit of Internal Medicine, University of Oulu, POB 8000, FIN-90014 Oulu, Finland
- Center of Internal Medicine and Respiratory Medicine, Medical Research Center Oulu, Oulu University Hospital, POB 10, FIN-90029 Oulu, Finland
- Correspondence:
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238
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Enomoto T, Sekiya R, Sugimoto H, Terashita T, Yoshioka J, Nagano T, Nishimura Y, Yano E, Moriyama T, Nakata K. Hypersensitivity Pneumonitis Caused by Exposure to a Gray Parrot (Psittacus erithacus). Intern Med 2022; 61:2197-2202. [PMID: 34980797 PMCID: PMC9381342 DOI: 10.2169/internalmedicine.8679-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
A 73-year-old woman complaining of cough and dyspnea was admitted to our hospital. High-resolution computed tomography chest revealed patchy ground-glass attenuation in the upper lung field. The patient suffered an asthma attack and was diagnosed with allergic pneumonitis; prednisolone was administered for treatment. Bird-related hypersensitivity pneumonitis was suspected, as she had a gray parrot (Psittacus erithacus) and a budgerigar (Melopsittacus undulatus) at home. An immunoblotting analysis with the patient's serum demonstrated IgG-binding fractions to the gray parrot's feathers only; no binding was noted with the budgerigar antigens. The patient was conclusively diagnosed with hypersensitivity pneumonitis related to exposure to a gray parrot.
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Affiliation(s)
| | - Reina Sekiya
- Division of Respiratory Medicine, Konan Medical Center, Japan
| | | | | | - Junya Yoshioka
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Japan
| | - Tatsuya Nagano
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Japan
| | - Yoshihiro Nishimura
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Japan
| | - Erika Yano
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Kindai University, Japan
| | - Tatsuya Moriyama
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Kindai University, Japan
| | - Kyosuke Nakata
- Division of Respiratory Medicine, Konan Medical Center, Japan
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239
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Zhou Y, Fang C, Sun Q, Dong Y. Relevance of RNA N6-Methyladenosine Regulators for Pulmonary Fibrosis: Implications for Chronic Hypersensitivity Pneumonitis and Idiopathic Pulmonary Fibrosis. Front Genet 2022; 13:939175. [PMID: 35910226 PMCID: PMC9329921 DOI: 10.3389/fgene.2022.939175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Accepted: 06/16/2022] [Indexed: 12/15/2022] Open
Abstract
N6-methyladenosine (m6A) modification plays a pivotal role in post-transcriptionally regulating gene expression and biological functions. Nonetheless, the roles of m6A modification in the regulation of chronic hypersensitivity pneumonitis (CHP) and idiopathic pulmonary fibrosis (IPF) remain unclear. Twenty-two significant m6A regulators were selected from differential gene analysis between the control and treatment groups from the GSE150910 dataset. Five candidate m6A regulators (insulin-like growth factor binding protein 2, insulin-like growth factor binding protein 3, YTH domain-containing protein 1, zinc finger CCCH domain-containing protein 13, and methyltransferase-like 3) were screened by the application of a random forest model and nomogram model to predict risks of pulmonary fibrosis. The consensus clustering method was applied to divide the treatment samples into two groups with different m6A patterns (clusters A and B) based on the 22 m6A regulators. Our study performed principal component analysis to obtain the m6A-related score of the 288 samples to quantify the two m6A patterns. The study reveals that cluster A was linked to T helper cell (Th) 2-type cytokines, while the immune infiltration of Th1 cytokines was higher in cluster B. Our results suggest that m6A cluster A is likely related to pulmonary fibrosis, indicating m6A regulators play notable roles in the occurrence of pulmonary fibrosis. The m6A patterns could be considered as biomarkers to identify CHP and IPF, which will be helpful to develop immunotherapy strategies for pulmonary fibrosis in the future.
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Affiliation(s)
| | | | - Qinying Sun
- *Correspondence: Yuchao Dong, ; Qinying Sun,
| | - Yuchao Dong
- *Correspondence: Yuchao Dong, ; Qinying Sun,
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Dasgupta S, Bhattacharya A, Abhijit RD, Roy Chowdhury S, Chaudhury K. Risk factors associated with mortality in hypersensitivity pneumonitis: a meta-analysis. Expert Rev Respir Med 2022; 16:801-811. [PMID: 35819125 DOI: 10.1080/17476348.2022.2100352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Hypersensitivity pneumonitis (HP) related deaths have increased substantially in recent years. It is important to identify the risk factors of HP significantly associated with mortality to ensure close patient monitoring and assess disease progression. RESEARCH DESIGN AND METHODS Extensive literature search was conducted in accordance with the PRISMA checklist. Literature search of PUBMED, EMBASE and Cochrane Library database between January 2009 and April 2021 using the terms "hypersensitivity pneumonitis", "hazard ratio", and "mortality" identified 325 articles. A total of 22 independent original studies focusing on mortality of HP patients were assessed. RESULTS This systematic review and meta-analysis suggests that increased age, male sex, honeycombing and traction bronchiectasis patterns on high-resolution computed tomography (HRCT) images are the major mortality-related risk factors of patients with HP. In case of chronic HP, antigen exposure appeared to be an additional risk factor. CONCLUSIONS The clinico-radiological risk factors of mortality identified for HP will enable effective and close monitoring of patients, prognostication and guide towards appropriate management decisions. However, association between the type of antigen and mortality remains to be explored.
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Affiliation(s)
- Sanjukta Dasgupta
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India
| | - Anindita Bhattacharya
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India
| | | | | | - Koel Chaudhury
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India.,Fortis Hospital, Anandapur, Kolkata, India
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Chikasue T, Sumi A, Tanoue S, Abe T, Tominaga M, Fukuoka J, Fujimoto K. Human T-cell lymphotropic virus type 1 (HTLV-1)-associated bronchioloalveolar disorder required differentiation from fibrotic chronic hypersensitivity pneumonitis. Radiol Case Rep 2022; 17:2448-2452. [PMID: 35586160 PMCID: PMC9108737 DOI: 10.1016/j.radcr.2022.03.108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/26/2022] [Accepted: 03/30/2022] [Indexed: 11/29/2022] Open
Affiliation(s)
- Tomonori Chikasue
- Department of Radiology, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka, 830-0011, Japan
- Corresponding author.
| | - Akiko Sumi
- Department of Radiology, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka, 830-0011, Japan
| | - Shuichi Tanoue
- Department of Radiology, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka, 830-0011, Japan
| | - Toshi Abe
- Department of Radiology, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka, 830-0011, Japan
| | - Masaki Tominaga
- Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Junya Fukuoka
- Department of Pathology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kiminori Fujimoto
- Department of Radiology, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka, 830-0011, Japan
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Kishaba T. Current perspective of progressive-fibrosing interstitial lung disease. Respir Investig 2022; 60:503-509. [PMID: 35431170 DOI: 10.1016/j.resinv.2022.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 03/11/2022] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
Interstitial lung disease (ILD) is a parenchymal lung disease and restrictive disorder that presents as diffuse infiltrative shadows. The initial diagnosis of ILD is important because management strategies depend on the disease pathogenesis. Connective-tissue disease (CTD)-associated ILD including rheumatoid arthritis (RA), systemic sclerosis (SSc) requires a thorough evaluation of chronic respiratory symptoms such as non-productive cough and exertional dyspnea, as well as physical findings. Moreover, myeloperoxidase-positive anti-neutrophilic cytoplasmic antibody (MPO-ANCA)-associated vasculitis with ILD also shows disease progression. In CTD-associated ILD, the first-line treatment is anti-inflammatory drugs such as prednisolone or immunosuppressants. In hypersensitivity pneumonitis (HP), detailed environmental history-taking is crucial. Therefore, systematic standardized questionnaires are needed. However, the causative antigens are often not identified in daily clinical practice. When an antigen is identified or suspected, the first action is avoidance. If antigen avoidance does not contribute to clinical improvement, anti-inflammatory drugs such as prednisolone might be introduced. Regarding sarcoidosis, while most patients do not require treatment for lung involvement, some need anti-inflammatory drugs or immunosuppressants. Additionally, steroid treatment should be considered for the critical status of extrapulmonary sarcoidosis including cardiac, neurogenic and ocular sarcoidosis. Once starting treatment for ILD, multi-dimensional approaches are applied, including symptom tracking, chest imaging, pulmonary function test (PFT), and 6-min walking test. Recently, the concept of progressive-fibrosing interstitial lung disease (PF-ILD) has been proposed as a new disease entity. The definition of PF-ILD includes symptom progression, PFT decline, and extension of chest high-resolution computed tomography (HRCT) findings. This mini-review describes the background, definition, clinical characteristics, management, and challenges of PF-ILD.
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Affiliation(s)
- Tomoo Kishaba
- Department of Respiratory Medicine, Okinawa Chubu Hospital, Miyazato 281, Uruma City, Okinawa 〒904-2293, Japan.
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243
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Ronaghi R, Oh S. Transbronchial Lung Cryobiopsy for Diffuse Parenchymal Lung Disease. Semin Respir Crit Care Med 2022; 43:536-540. [PMID: 35777417 DOI: 10.1055/s-0042-1748918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Transbronchial lung cryobiopsy (TBLC) offers a minimally invasive option for the diagnosis of diffuse parenchymal lung diseases, of which interstitial lung diseases comprise the most common diagnoses. It has a high diagnostic yield with prognostic and therapeutic implications. TBLC has a favorable safety profile compared with surgical lung biopsy, but associated complications include pneumothorax and bleeding. However, TBLC techniques remain variable. Here we review the latest techniques described to maximize diagnostic yield and mitigate complications of TBLC as well as how this modality has been incorporated into guidelines.
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Affiliation(s)
- Reza Ronaghi
- Division of Pulmonary and Critical Care Medicine, Clinical Immunology and Allergy, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Scott Oh
- Division of Pulmonary and Critical Care Medicine, Clinical Immunology and Allergy, David Geffen School of Medicine at UCLA, Los Angeles, California
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Validation of inhalation challenge test and serum immunoglobulin G test for bird-related fibrotic hypersensitivity pneumonitis. Ann Allergy Asthma Immunol 2022; 129:313-318. [PMID: 35779842 DOI: 10.1016/j.anai.2022.06.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/09/2022] [Accepted: 06/10/2022] [Indexed: 11/21/2022]
Abstract
BACKGROUND The inhalation challenge test is considered to be the item for diagnosis of hypersensitivity pneumonitis (HP) and identifying the causative antigen in patients with fibrotic HP. However, the inhalation challenge test is not widely used. OBJECTIVE To evaluate the values of the inhalation challenge test by comparing with serum immunoglobulin (Ig)G test. METHODS This was a single-center, retrospective study. The patients with fibrotic HP were diagnosed pathologically by surgical lung biopsy or transbronchial lung cryobiopsy and were assumed to have bird-related fibrotic HP if they had a history of obvious avian exposure. RESULTS On the basis of pathologic findings and history of avian exposure, 43 of 86 patients were diagnosed with having bird-related fibrotic HP. In 43 patients with bird-related fibrotic HP, 15 (35%) were positive for anti-bird IgG antibody and 36 (84%) were positive for the inhalation challenge test; in addition, the specificity of the inhalation challenge test was 67%. Patients with both positive results from inhalation challenge test and anti-bird IgG antibodies had a 2.7% decline in annual forced vital capacity (FVC) before the inhalation (P = .02). In patients with positive result from inhalation challenge test and negative result from anti-bird IgG antibodies, the annual FVC decreased by 5.8% (P = .03). FVC was not consistent in patients with positive result from the anti-bird IgG antibodies. CONCLUSION The inhalation challenge test for bird-related fibrotic HP was more sensitive than the anti-bird IgG antibodies. Furthermore, the inhalation challenge test could select patients with similar disease progression.
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Tomassetti S, Poletti V, Ravaglia C, Sverzellati N, Piciucchi S, Cozzi D, Luzzi V, Comin C, Wells AU. Incidental discovery of interstitial lung disease: diagnostic approach, surveillance and perspectives. Eur Respir Rev 2022; 31:31/164/210206. [PMID: 35418487 PMCID: PMC9488620 DOI: 10.1183/16000617.0206-2021] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 02/07/2022] [Indexed: 11/30/2022] Open
Abstract
The incidental discovery of pre-clinical interstitial lung disease (ILD) has led to the designation of interstitial lung abnormalities (ILA), a radiological entity defined as the incidental finding of computed tomography (CT) abnormalities affecting more than 5% of any lung zone. Two recent documents have redefined the borders of this entity and made the recommendation to monitor patients with ILA at risk of progression. In this narrative review, we will focus on some of the limits of the current approach, underlying the potential for progression to full-blown ILD of some patients with ILA and the numerous links between subpleural fibrotic ILA and idiopathic pulmonary fibrosis (IPF). Considering the large prevalence of ILA in the general population (7%), restricting monitoring only to cases considered at risk of progression appears a reasonable approach. However, this suggestion should not prevent pulmonary physicians from pursuing an early diagnosis of ILD and timely treatment where appropriate. In cases of suspected ILD, whether found incidentally or not, the pulmonary physician is still required to make a correct ILD diagnosis according to current guidelines, and eventually treat the patient accordingly. In patients with interstitial lung abnormalities (ILA), monitoring of those at risk of progression is currently recommended, and pulmonary physicians should pursue an early diagnosis when ILA become clinically significant to facilitate timely treatment https://bit.ly/3HKOQc8
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Affiliation(s)
- Sara Tomassetti
- Dept of Experimental and Clinical Medicine, Florence University, Florence, Italy .,Interventional Pneumology, Careggi University Hospital, Florence, Italy
| | - Venerino Poletti
- Dept of Diseases of the Thorax, GB Morgagni Hospital, Forlì, Italy
| | - Claudia Ravaglia
- Dept of Diseases of the Thorax, GB Morgagni Hospital, Forlì, Italy
| | | | | | - Diletta Cozzi
- Dept of Emergency Radiology, University Hospital Careggi, Florence, Italy
| | - Valentina Luzzi
- Interventional Pneumology, Careggi University Hospital, Florence, Italy
| | - Camilla Comin
- Dept of Experimental and Clinical Medicine, Florence University, Florence, Italy
| | - Athol U Wells
- Royal Brompton and Harefield NHS Foundation Trust, London, UK.,National Heart and Lung Institute, Imperial College London, London, UK
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Grant-Orser A, Metcalfe A, Pope JE, Johannson KA. Pregnancy Considerations for Patients With Interstitial Lung Disease. Chest 2022; 162:1093-1105. [PMID: 35779609 DOI: 10.1016/j.chest.2022.06.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 06/16/2022] [Accepted: 06/22/2022] [Indexed: 12/29/2022] Open
Abstract
Advances in our understanding of interstitial lung disease (ILD) pathophysiology and natural history have led to the development of guidelines for the diagnosis and management of several of these complex diseases. The demographics of patients with ILD indicate the disease is not restricted to older adults. Connective tissue disease-associated ILD, familial pulmonary fibrosis, and post-COVID-19 fibrosis may affect women of child-bearing age. Recent trials have excluded pregnant women, thereby limiting the applicability of contemporary therapeutic advances to these patients. This review synthesizes the current knowledge of pregnancy outcomes in those with ILD, with a focus on connective tissue disease-associated ILD, and potential treatment implications for patients with ILD who are pregnant or considering pregnancy. Pregnancy considerations for patients with ILD include the need for preconception counseling and planning to ensure disease stability, medication and vaccination optimization, and multidisciplinary involvement of a patient's pulmonologist, obstetrician, and, when indicated, rheumatologist and genetic counselor. Evidence to date suggests that women with ILD can have safe and healthy pregnancies but that complications may occur in those with severe ILD.
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Affiliation(s)
- Amanda Grant-Orser
- Division of Respirology, Department of Medicine, University of Calgary, Calgary, AB, Canada.
| | - Amy Metcalfe
- Department of Obstetrics and Gynecology, University of Calgary, Calgary, AB, Canada; Department of Community Health Sciences, University of Calgary, Calgary, AB, Canada
| | - Janet E Pope
- Division of Rheumatology, Department of Medicine, University of Western Ontario, St. Joseph's Health Care, London, ON, Canada
| | - Kerri A Johannson
- Division of Respirology, Department of Medicine, University of Calgary, Calgary, AB, Canada; Department of Community Health Sciences, University of Calgary, Calgary, AB, Canada; Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
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247
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Amratia DA, Viola H, Ioachimescu OC. Glucocorticoid therapy in respiratory illness: bench to bedside. J Investig Med 2022; 70:1662-1680. [DOI: 10.1136/jim-2021-002161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/26/2022] [Indexed: 11/07/2022]
Abstract
Each year, hundreds of millions of individuals are affected by respiratory disease leading to approximately 4 million deaths. Most respiratory pathologies involve substantially dysregulated immune processes that either fail to resolve the underlying process or actively exacerbate the disease. Therefore, clinicians have long considered immune-modulating corticosteroids (CSs), particularly glucocorticoids (GCs), as a critical tool for management of a wide spectrum of respiratory conditions. However, the complex interplay between effectiveness, risks and side effects can lead to different results, depending on the disease in consideration. In this comprehensive review, we present a summary of the bench and the bedside evidence regarding GC treatment in a spectrum of respiratory illnesses. We first describe here the experimental evidence of GC effects in the distal airways and/or parenchyma, both in vitro and in disease-specific animal studies, then we evaluate the recent clinical evidence regarding GC treatment in over 20 respiratory pathologies. Overall, CS remain a critical tool in the management of respiratory illness, but their benefits are dependent on the underlying pathology and should be weighed against patient-specific risks.
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248
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Serum Biomarkers in a Radiological Pattern of Non-Fibrotic Hypersensitivity Pneumonitis: Implications for Mechanistic Difference and Differential Diagnosis. Diseases 2022; 10:diseases10030036. [PMID: 35892730 PMCID: PMC9326628 DOI: 10.3390/diseases10030036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/15/2022] [Accepted: 06/24/2022] [Indexed: 12/04/2022] Open
Abstract
Hypersensitivity pneumonitis (HP) is a consequence of immune-mediated reactions caused by recurrent exposure to environmental agents. Recently, clinical practice guidelines for the diagnosis of HP were published and increased interest in HP. On the other hand, novel therapies have recently emerged for various diseases, and the management of drug-related pneumonitis (DRP) has become increasingly important. Among DRP, the HP pattern (DRP-HP) shows small, poorly defined centrilobular nodules with or without widespread areas of ground-glass opacity or lobular areas of decreased attenuation and vascularity. A similar radiological pattern of non-fibrotic HP can be induced, irrespective of inhalation (non-fibrotic HP) or intravenous administration (DRP-HP). However, their difference has not been well described, although the distribution of lesions in the lungs was slightly different between these two conditions. In this review, we focus on serum biomarkers of lung epithelial cells in order to investigate the difference between DRP-HP and non-fibrotic HP (common-HP). Serum levels of Krebs von den Lungen 6 (KL-6) might be relatively lower (occasionally normal) in DRP-HP than in common-HP, implying a mechanistic difference. KL-6 could be useful in discriminating between DRP and non-fibrotic HP (common type).
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249
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Furukawa T, Oyama S, Yokota H, Kondoh Y, Kataoka K, Johkoh T, Fukuoka J, Hashimoto N, Sakamoto K, Shiratori Y, Hasegawa Y. A comprehensible machine learning tool to differentially diagnose idiopathic pulmonary fibrosis from other chronic interstitial lung diseases. Respirology 2022; 27:739-746. [PMID: 35697345 DOI: 10.1111/resp.14310] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 05/19/2022] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND OBJECTIVE Idiopathic pulmonary fibrosis (IPF) has poor prognosis, and the multidisciplinary diagnostic agreement is low. Moreover, surgical lung biopsies pose comorbidity risks. Therefore, using data from non-invasive tests usually employed to assess interstitial lung diseases (ILDs), we aimed to develop an automated algorithm combining deep learning and machine learning that would be capable of detecting and differentiating IPF from other ILDs. METHODS We retrospectively analysed consecutive patients presenting with ILD between April 2007 and July 2017. Deep learning was used for semantic image segmentation of HRCT based on the corresponding labelled images. A diagnostic algorithm was then trained using the semantic results and non-invasive findings. Diagnostic accuracy was assessed using five-fold cross-validation. RESULTS In total, 646,800 HRCT images and the corresponding labelled images were acquired from 1068 patients with ILD, of whom 42.7% had IPF. The average segmentation accuracy was 96.1%. The machine learning algorithm had an average diagnostic accuracy of 83.6%, with high sensitivity, specificity and kappa coefficient values (80.7%, 85.8% and 0.665, respectively). Using Cox hazard analysis, IPF diagnosed using this algorithm was a significant prognostic factor (hazard ratio, 2.593; 95% CI, 2.069-3.250; p < 0.001). Diagnostic accuracy was good even in patients with usual interstitial pneumonia patterns on HRCT and those with surgical lung biopsies. CONCLUSION Using data from non-invasive examinations, the combined deep learning and machine learning algorithm accurately, easily and quickly diagnosed IPF in a population with various ILDs.
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Affiliation(s)
- Taiki Furukawa
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Image Processing Research Team, RIKEN Center for Advanced Photonics, Wako, Japan.,Medical IT Center, Nagoya University Hospital, Nagoya, Japan
| | - Shintaro Oyama
- Image Processing Research Team, RIKEN Center for Advanced Photonics, Wako, Japan.,Medical IT Center, Nagoya University Hospital, Nagoya, Japan
| | - Hideo Yokota
- Image Processing Research Team, RIKEN Center for Advanced Photonics, Wako, Japan.,Advanced Data Science Project, Information R&D and Strategy Headquarters, RIKEN, Wako, Japan
| | - Yasuhiro Kondoh
- Department of Respiratory Medicine and Allergy, Tosei General Hospital, Seto, Japan
| | - Kensuke Kataoka
- Department of Respiratory Medicine and Allergy, Tosei General Hospital, Seto, Japan
| | - Takeshi Johkoh
- Department of Radiology, Kansai Rosai Hospital, Amagaski, Japan
| | - Junya Fukuoka
- Department of Pathology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Naozumi Hashimoto
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Koji Sakamoto
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | | | - Yoshinori Hasegawa
- Nagoya Medical Center, National Hospitalization Organization, Nagoya, Japan
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250
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Oh S, Ronaghi R, He T, Oberg C, Channick C, Susanto I, Carroll M, Weigt SS, Sayah D, Dolinay T, Chung A, Fishbein G, Lynch JP, Belperio JA. The safety profile of a protocolized transbronchial cryobiopsy program utilizing a 2.4 mm cryoprobe for interstitial lung disease. Respir Med 2022; 200:106913. [PMID: 35724519 DOI: 10.1016/j.rmed.2022.106913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/08/2022] [Accepted: 06/04/2022] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Transbronchial lung cryobiopsy (TBLC) has emerged as a promising alternative to surgical lung biopsy for the diagnosis of interstitial lung disease. However, uncertainty remains regarding its overall complications due to a lack of procedural standardization including the size of cryoprobe utilized. METHODS This is a prospective cohort study of a protocolized transbronchial cryobiopsy program utilizing a 2.4 mm cryoprobe. 201 consecutive subjects were enrolled at a single academic center. RESULTS The average biopsy size was 106.2 ± 39.3 mm2. Complications included a total pneumothorax rate of 4.9% with 3.5% undergoing chest tube placement. Severe bleeding defined by the Nashville Working Group occurred in 0.5% of cases. There were no deaths at 30-days. DISCUSSION A protocolized transbronchial cryobiopsy program utilizing a 2.4 mm cryoprobe in can achieve a high diagnostic yield with a favorable safety profile.
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Affiliation(s)
- Scott Oh
- Section of Interventional Pulmonology, USA; Department of Medicine, USA; Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, USA.
| | - Reza Ronaghi
- Section of Interventional Pulmonology, USA; Department of Medicine, USA; Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, USA
| | - Tao He
- Section of Interventional Pulmonology, USA; Department of Medicine, USA; Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, USA
| | - Catherine Oberg
- Section of Interventional Pulmonology, USA; Department of Medicine, USA; Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, USA
| | - Colleen Channick
- Section of Interventional Pulmonology, USA; Department of Medicine, USA; Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, USA
| | - Irawan Susanto
- Section of Interventional Pulmonology, USA; Department of Medicine, USA; Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, USA
| | | | - S Sam Weigt
- Department of Medicine, USA; Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, USA
| | - David Sayah
- Department of Medicine, USA; Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, USA
| | - Tamas Dolinay
- Department of Medicine, USA; Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, USA
| | - Augustine Chung
- Department of Medicine, USA; Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, USA
| | - Gregory Fishbein
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Joseph P Lynch
- Department of Medicine, USA; Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, USA
| | - John A Belperio
- Department of Medicine, USA; Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, USA
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