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  1. Article ; Online: Design of the STRIVE-IPF trial- study of therapeutic plasma exchange, rituximab, and intravenous immunoglobulin for acute exacerbations of idiopathic pulmonary fibrosis.

    Kulkarni, Tejaswini / Criner, Gerard J / Kass, Daniel J / Rosas, Ivan O / Scholand, Mary Beth / Dilling, Daniel F / Summer, Ross / Duncan, Steven R

    BMC pulmonary medicine

    2024  Volume 24, Issue 1, Page(s) 143

    Abstract: Background: Acute exacerbations of idiopathic pulmonary fibrosis (AE-IPF) affect a significant proportion of patients with IPF. There are limited data to inform therapeutic strategies for AE-IPF, despite its high mortality. We discuss the rationale and ... ...

    Abstract Background: Acute exacerbations of idiopathic pulmonary fibrosis (AE-IPF) affect a significant proportion of patients with IPF. There are limited data to inform therapeutic strategies for AE-IPF, despite its high mortality. We discuss the rationale and design of STRIVE-IPF, a randomized, multi-center, open-label Phase IIb clinical trial to determine the efficacy of combined therapeutic plasma exchange (TPE), rituximab, and intravenous immunoglobulin (IVIG), in comparison to treatment as usual (TAU), among patients with acute IPF exacerbations.
    Methods: The STRIVE-IPF trial will randomize 51 patients among five sites in the United States. The inclusion criteria have been designed to select a study population with AE-IPF, as defined by American Thoracic Society criteria, while excluding patients with an alternative cause for a respiratory decompensation. The primary endpoint of this trial is six-month survival. Secondary endpoints include supplement oxygen requirement and six-minute walk distance which will be assessed immediately prior to treatment and after completion of therapy on day 19, as well as at periodic subsequent visits.
    Discussion: The experimental AE-IPF therapy proposed in this clinical trial was adapted from treatment regimens used in other antibody-mediated diseases. The regimen is initiated with TPE, which is expected to rapidly reduce circulating autoantibodies, followed by rituximab to reduce B-cells and finally IVIG, which likely has multiple effects, including affecting feedback inhibition of residual B-cells by Fc receptor occupancy. We have reported potential benefits of this experimental therapy for AE-IPF in previous anecdotal reports. This clinical trial has the potential to profoundly affect current paradigms and treatment approaches to patients with AE-IPF.
    Trial registration: ClinicalTrials.gov identifier: NCT03286556.
    MeSH term(s) Humans ; Idiopathic Interstitial Pneumonias/complications ; Idiopathic Pulmonary Fibrosis/drug therapy ; Immunoglobulins, Intravenous/therapeutic use ; Plasma Exchange ; Rituximab/therapeutic use
    Chemical Substances Immunoglobulins, Intravenous ; Rituximab (4F4X42SYQ6)
    Language English
    Publishing date 2024-03-20
    Publishing country England
    Document type Clinical Trial, Phase II ; Journal Article ; Multicenter Study ; Randomized Controlled Trial
    ZDB-ID 2059871-3
    ISSN 1471-2466 ; 1471-2466
    ISSN (online) 1471-2466
    ISSN 1471-2466
    DOI 10.1186/s12890-024-02957-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Design of the STRIVE-IPF Trial- Study of Therapeutic Plasma Exchange, Rituximab, and Intravenous Immunoglobulin for Acute Exacerbations of Idiopathic Pulmonary Fibrosis.

    Kulkarni, Tejaswini / Criner, Gerard J / Kass, Daniel J / Rosas, Ivan O / Scholand, Mary Beth / Dilling, Daniel F / Summer, Ross / Duncan, Steven R

    Research square

    2024  

    Abstract: Background: Acute exacerbations of idiopathic pulmonary fibrosis (AE-IPF) affect a significant proportion of patients with IPF. There are limited data to inform therapeutic strategies for AEIPF, despite its high mortality. We discuss the rationale and ... ...

    Abstract Background: Acute exacerbations of idiopathic pulmonary fibrosis (AE-IPF) affect a significant proportion of patients with IPF. There are limited data to inform therapeutic strategies for AEIPF, despite its high mortality. We discuss the rationale and design of STRIVE-IPF, a randomized, multi-center, open-label Phase IIb clinical trial to determine the efficacy of combined therapeutic plasma exchange (TPE), rituximab, and intravenous immunoglobulin (IVIG), in comparison to treatment as usual (TAU), among patients with acute IPF exacerbations.
    Methods: The STRIVE-IPF trial will randomize 51 patients among five sites in the United States. The inclusion criteria have been designed to select a study population with AE-IPF, as defined by American Thoracic Society criteria, while excluding patients with an alternative cause for a respiratory decompensation. The primary endpoint of this trial is six-month survival. Secondary endpoints include supplement oxygen requirement and six-minute walk distance which will be assessed immediately prior to treatment and after completion of therapy on day 19, as well as at periodic subsequent visits.
    Discussion: The experimental AE-IPF therapy proposed in this clinical trial was adapted from treatment regimens used in other antibody-mediated diseases. The regimen is initiated with TPE, which is expected to rapidly reduce circulating autoantibodies, followed by rituximab to reduce B-cells and finally IVIG, which likely has multiple effects, including affecting feedback inhibition of residual B-cells by Fc receptor occupancy. We have reported potential benefits of this experimental therapy for AE-IPF in previous anecdotal reports. This clinical trial has the potential to profoundly affect current paradigms and treatment approaches to patients with AE-IPF.Trial Registration ClinicalTrials.gov identifier: NCT03286556.
    Language English
    Publishing date 2024-02-28
    Publishing country United States
    Document type Preprint
    DOI 10.21203/rs.3.rs-3962419/v1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: What Lies beneath: Preformed Autoantibodies and Lung Transplantation.

    Duncan, Steven R / Gaggar, Amit

    American journal of respiratory cell and molecular biology

    2019  Volume 60, Issue 6, Page(s) 613–614

    MeSH term(s) Autoantibodies/immunology ; Emphysema ; Humans ; Lung Transplantation ; Pulmonary Emphysema ; Reperfusion Injury
    Chemical Substances Autoantibodies
    Language English
    Publishing date 2019-01-16
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 1025960-0
    ISSN 1535-4989 ; 1044-1549
    ISSN (online) 1535-4989
    ISSN 1044-1549
    DOI 10.1165/rcmb.2018-0415ED
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Acute exacerbation of idiopathic pulmonary fibrosis: who to treat, how to treat.

    Kulkarni, Tejaswini / Duncan, Steven R

    Current pulmonology reports

    2019  Volume 8, Issue 4, Page(s) 123–130

    Abstract: Purpose of review: Acute exacerbations of idiopathic pulmonary fibrosis (AE-IPF) are the most frequent cause of death among patients with IPF. Here, we review the revised definition and diagnostic criteria for AE-IPF and discuss management strategies ... ...

    Abstract Purpose of review: Acute exacerbations of idiopathic pulmonary fibrosis (AE-IPF) are the most frequent cause of death among patients with IPF. Here, we review the revised definition and diagnostic criteria for AE-IPF and discuss management strategies including mechanistically targeted investigational therapies for this complex syndrome.
    Recent findings: Novel therapies targeting various pathways including inflammation, autoimmunity and coagulation cascade involved in AE-IPF have recently been reported. Although most of these reports are small and uncontrolled, they have provided evidence to design larger randomized, controlled, multicenter studies to improve outcomes among patients with AE-IPF.
    Summary: AE-IPF has a dismal prognosis and current treatment consists mainly of supportive care and symptom palliation. There is a lack of consensus on current therapies for AE-IPF, including corticosteroids, but current randomized control studies for newer therapeutic strategies may hold promise.
    Language English
    Publishing date 2019-11-26
    Publishing country United States
    Document type Journal Article
    ISSN 2199-2428
    ISSN 2199-2428
    DOI 10.1007/s13665-019-00238-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Perspective: Clues, not conclusions.

    Duncan, Steven R

    Nature

    2012  Volume 489, Issue 7417, Page(s) S15

    MeSH term(s) Autoantibodies/immunology ; Autoimmune Diseases/immunology ; Autoimmune Diseases/pathology ; Humans ; Models, Immunological ; Pulmonary Disease, Chronic Obstructive/immunology ; Pulmonary Disease, Chronic Obstructive/pathology ; Uncertainty
    Chemical Substances Autoantibodies
    Language English
    Publishing date 2012-09-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/489S15a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Correction: DX5/CD49b-Positive T Cells Are Not Synonymous with CD1d-Dependent NKT Cells.

    Larson-Casey, Jennifer L / Saleem, Komal / Surolia, Ranu / Pandey, Jyotsana / Mack, Matthias / Antony, Veena B / Bodduluri, Sandeep / Bhatt, Surya P / Duncan, Steven R / Carter, A Brent

    Journal of immunology (Baltimore, Md. : 1950)

    2024  Volume 212, Issue 8, Page(s) 1393

    Language English
    Publishing date 2024-02-26
    Publishing country United States
    Document type Published Erratum
    ZDB-ID 3056-9
    ISSN 1550-6606 ; 0022-1767 ; 1048-3233 ; 1047-7381
    ISSN (online) 1550-6606
    ISSN 0022-1767 ; 1048-3233 ; 1047-7381
    DOI 10.4049/jimmunol.2400069
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Myeloid Heterogeneity Mediates Acute Exacerbations of Pulmonary Fibrosis.

    Larson-Casey, Jennifer L / Saleem, Komal / Surolia, Ranu / Pandey, Jyotsana / Mack, Matthias / Antony, Veena B / Bodduluri, Sandeep / Bhatt, Surya P / Duncan, Steven R / Carter, A Brent

    Journal of immunology (Baltimore, Md. : 1950)

    2024  Volume 211, Issue 11, Page(s) 1714–1724

    Abstract: Epidemiological evidence indicates that exposure to particulate matter is linked to the development of idiopathic pulmonary fibrosis (IPF) and increases the incidence of acute exacerbations of IPF. In addition to accelerating the rate of lung function ... ...

    Abstract Epidemiological evidence indicates that exposure to particulate matter is linked to the development of idiopathic pulmonary fibrosis (IPF) and increases the incidence of acute exacerbations of IPF. In addition to accelerating the rate of lung function decline, exposure to fine particulate matter (particulate matter smaller than 2.5 μm [PM2.5]) is a risk factor for increased mortality in subjects with IPF. In this article, we show that exposure to PM2.5 mediates monocyte recruitment and fibrotic progression in mice with established fibrosis. In mice with established fibrosis, bronchoalveolar lavage cells showed monocyte/macrophage heterogeneity after exposure to PM2.5. These cells had a significant inflammatory and anti-inflammatory signature. The mixed heterogeneity of cells contributed to the proinflammatory and anti-inflammatory response. Although monocyte-derived macrophages were recruited to the lung in bleomycin-injured mice treated with PM2.5, recruitment of monocytes expressing Ly6Chi to the lung promoted progression of fibrosis, reduced lung aeration on computed tomography, and impacted lung compliance. Ly6Chi monocytes isolated from PM2.5-exposed fibrotic mice showed enhanced expression of proinflammatory markers compared with fibrotic mice exposed to vehicle. Moreover, IPF bronchoalveolar lavage cells treated ex vivo with PM2.5 showed an exaggerated inflammatory response. Targeting Ly6Chi monocyte recruitment inhibited fibrotic progression in mice. Moreover, the adoptive transfer of Ly6Chi monocytes exacerbated established fibrosis. These observations suggest that enhanced recruitment of Ly6Chi monocytes with a proinflammatory phenotype mediates acute exacerbations of pulmonary fibrosis, and targeting these cells may provide a potential novel therapeutic target to protect against acute exacerbations of IPF.
    MeSH term(s) Humans ; Mice ; Animals ; Lung/pathology ; Idiopathic Pulmonary Fibrosis/pathology ; Fibrosis ; Bleomycin/therapeutic use ; Particulate Matter/adverse effects ; Anti-Inflammatory Agents/therapeutic use
    Chemical Substances Bleomycin (11056-06-7) ; Particulate Matter ; Anti-Inflammatory Agents
    Language English
    Publishing date 2024-02-26
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 3056-9
    ISSN 1550-6606 ; 0022-1767 ; 1048-3233 ; 1047-7381
    ISSN (online) 1550-6606
    ISSN 0022-1767 ; 1048-3233 ; 1047-7381
    DOI 10.4049/jimmunol.2300053
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: The missing link between smoking and COPD autoreactivity?

    Duncan, Steven R

    American journal of respiratory and critical care medicine

    2011  Volume 184, Issue 7, Page(s) 747–749

    MeSH term(s) Animals ; Autoantibodies/metabolism ; Female ; Humans ; Male ; Oxidative Stress/immunology ; Protein Carbonylation/immunology ; Pulmonary Disease, Chronic Obstructive/immunology
    Chemical Substances Autoantibodies
    Language English
    Publishing date 2011-09-22
    Publishing country United States
    Document type Editorial ; Research Support, N.I.H., Extramural ; Comment
    ZDB-ID 1180953-x
    ISSN 1535-4970 ; 0003-0805 ; 1073-449X
    ISSN (online) 1535-4970
    ISSN 0003-0805 ; 1073-449X
    DOI 10.1164/rccm.201107-1228ED
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: What is autoimmunity and why is it likely to be important in chronic lung disease?

    Duncan, Steven R

    American journal of respiratory and critical care medicine

    2010  Volume 181, Issue 1, Page(s) 4–5

    MeSH term(s) Autoantibodies/immunology ; Autoimmunity ; Female ; Humans ; Male ; Pulmonary Disease, Chronic Obstructive/immunology
    Chemical Substances Autoantibodies
    Language English
    Publishing date 2010-01-01
    Publishing country United States
    Document type Comment ; Editorial ; Research Support, Non-U.S. Gov't
    ZDB-ID 1180953-x
    ISSN 1535-4970 ; 0003-0805 ; 1073-449X
    ISSN (online) 1535-4970
    ISSN 0003-0805 ; 1073-449X
    DOI 10.1164/rccm.200910-1488ED
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Monocyte-derived alveolar macrophage apolipoprotein E participates in pulmonary fibrosis resolution.

    Cui, Huachun / Jiang, Dingyuan / Banerjee, Sami / Xie, Na / Kulkarni, Tejaswini / Liu, Rui-Ming / Duncan, Steven R / Liu, Gang

    JCI insight

    2020  Volume 5, Issue 5

    Abstract: Recent studies have presented compelling evidence that it is not tissue-resident, but rather monocyte-derived alveolar macrophages (TR-AMs and Mo-AMs, respectively) that are essential to development of experimental lung fibrosis. However, whether ... ...

    Abstract Recent studies have presented compelling evidence that it is not tissue-resident, but rather monocyte-derived alveolar macrophages (TR-AMs and Mo-AMs, respectively) that are essential to development of experimental lung fibrosis. However, whether apolipoprotein E (ApoE), which is produced abundantly by Mo-AMs in the lung, plays a role in the pathogenesis is unclear. In this study, we found that pulmonary ApoE was almost exclusively produced by Mo-AMs in mice with bleomycin-induced lung fibrosis. We showed that, although ApoE was not necessary for developing maximal fibrosis in bleomycin-injured lung, it was required for the resolution of this pathology. We found that ApoE directly bound to Collagen I and mediated Collagen I phagocytosis in vitro and in vivo, and this process was dependent on low-density lipoprotein receptor-related protein 1 (LPR1). Furthermore, interference of ApoE/LRP1 interaction impaired the resolution of lung fibrosis in bleomycin-treated WT mice. In contrast, supplementation of ApoE promoted this process in ApoE-/- animals. In conclusion, Mo-AM-derived ApoE is beneficial to the resolution of lung fibrosis, supporting the notion that Mo-AMs may have distinct functions in different phases of lung fibrogenesis. The findings also suggest a potentially novel therapeutic target for treating lung fibrosis, to which effective remedies remain scarce.
    MeSH term(s) Animals ; Antibiotics, Antineoplastic/toxicity ; Apolipoproteins E/genetics ; Apolipoproteins E/metabolism ; Bleomycin/toxicity ; Bronchoalveolar Lavage Fluid ; Collagen Type I ; Macrophages, Alveolar/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Monocytes/metabolism ; Protein Binding ; Pulmonary Fibrosis/chemically induced ; Pulmonary Fibrosis/metabolism ; Pulmonary Fibrosis/pathology
    Chemical Substances Antibiotics, Antineoplastic ; Apolipoproteins E ; Collagen Type I ; Bleomycin (11056-06-7)
    Language English
    Publishing date 2020-03-12
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ISSN 2379-3708
    ISSN (online) 2379-3708
    DOI 10.1172/jci.insight.134539
    Database MEDical Literature Analysis and Retrieval System OnLINE

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