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Ruttens D, Verleden SE, Vandermeulen E, Bellon H, Vanaudenaerde BM, Somers J, Schoonis A, Schaevers V, Van Raemdonck DE, Neyrinck A, Dupont LJ, Yserbyt J, Verleden GM, Vos R. Prophylactic Azithromycin Therapy After Lung Transplantation: Post hoc Analysis of a Randomized Controlled Trial. Am J Transplant 2016; 16:254-61. [PMID: 26372728 DOI: 10.1111/ajt.13417] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 06/03/2015] [Accepted: 06/07/2015] [Indexed: 01/25/2023]
Abstract
Prophylactic azithromycin treatment has been demonstrated to improve freedom from bronchiolitis obliterans syndrome (BOS) 2 years after lung transplantation (LTx). In the current study, we re-evaluated the long-term effects of this prophylactic approach in view of the updated classification system for chronic lung allograft dysfunction (CLAD). A retrospective, intention-to-treat analysis of a randomized controlled trial comparing prophylactic treatment with placebo (n = 43) versus azithromycin (n = 40) after LTx was performed. Graft dysfunction (CLAD), graft loss (retransplantation, mortality), evolution of pulmonary function and functional exercise capacity were analyzed 7 years after inclusion of the last study subject. Following LTx, 22/43 (51%) patients of the placebo group and 11/40 (28%) patients of the azithromycin group ever developed CLAD (p = 0.043). CLAD-free survival was significantly longer in the azithromycin group (p = 0.024). No difference was present in proportion of obstructive versus restrictive CLAD between both groups. Graft loss was similar in both groups: 23/43 (53%) versus 16/40 (40%) patients (p = 0.27). Long-term pulmonary function and functional exercise capacity were significantly better in the azithromycin group (p < 0.05). Prophylactic azithromycin therapy reduces long-term CLAD prevalence and improves CLAD-free survival, pulmonary function, and functional exercise capacity after LTx.
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Affiliation(s)
- D Ruttens
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium
| | - S E Verleden
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium
| | - E Vandermeulen
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium
| | - H Bellon
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium
| | - B M Vanaudenaerde
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium
| | - J Somers
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium.,Department of Thoracic Surgery, KULeuven and UZ Leuven, Leuven, Belgium
| | - A Schoonis
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium
| | - V Schaevers
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium
| | - D E Van Raemdonck
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium.,Department of Thoracic Surgery, KULeuven and UZ Leuven, Leuven, Belgium
| | - A Neyrinck
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium.,Department of Anesthesiology, KULeuven and UZ Leuven, Leuven, Belgium
| | - L J Dupont
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium
| | - J Yserbyt
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium
| | - G M Verleden
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium
| | - R Vos
- Lung Transplant Unit, Division of Respiratory Diseases, Department of Clinical and Experimental Medicine, KULeuven and UZ Leuven, Leuven, Belgium
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Namba C, Tohyama M, Hanakawa Y, Murakami M, Shirakata Y, Matsumoto T, Suemori K, Ishii N, Hashimoto T, Sayama K. Paraneoplastic pemphigus associated with fatal bronchiolitis obliterans and intractable mucosal erosions: Treatment with cyclosporin in addition to steroid, rituximab and intravenous immunoglobulin. J Dermatol 2015; 43:419-22. [DOI: 10.1111/1346-8138.13160] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 08/27/2015] [Indexed: 11/28/2022]
Affiliation(s)
- Chika Namba
- Department of Dermatology; Ehime University Graduate School of Medicine; Ehime Japan
| | - Mikiko Tohyama
- Department of Dermatology; Ehime University Graduate School of Medicine; Ehime Japan
| | - Yasushi Hanakawa
- Department of Dermatology; Ehime University Graduate School of Medicine; Ehime Japan
| | - Masamoto Murakami
- Department of Dermatology; Ehime University Graduate School of Medicine; Ehime Japan
| | - Yuji Shirakata
- Department of Dermatology; Ehime University Graduate School of Medicine; Ehime Japan
| | - Takuya Matsumoto
- Department of Bioregulatory Medicine; Ehime University Graduate School of Medicine; Ehime Japan
| | - Koichiro Suemori
- Department of Bioregulatory Medicine; Ehime University Graduate School of Medicine; Ehime Japan
| | - Norito Ishii
- Department of Dermatology; Kurume University School of Medicine; Kurume University Institute of Cutaneous Cell Biology; Fukuoka Japan
| | - Takashi Hashimoto
- Department of Dermatology; Kurume University School of Medicine; Kurume University Institute of Cutaneous Cell Biology; Fukuoka Japan
| | - Koji Sayama
- Department of Dermatology; Ehime University Graduate School of Medicine; Ehime Japan
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Fluticasone, Azithromycin, and Montelukast Treatment for New-Onset Bronchiolitis Obliterans Syndrome after Hematopoietic Cell Transplantation. Biol Blood Marrow Transplant 2015; 22:710-716. [PMID: 26475726 DOI: 10.1016/j.bbmt.2015.10.009] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 10/07/2015] [Indexed: 12/13/2022]
Abstract
Bronchiolitis obliterans syndrome (BOS) after allogeneic hematopoietic cell transplantation (HCT) is associated with high mortality. We hypothesized that inhaled fluticasone, azithromycin, and montelukast (FAM) with a brief steroid pulse could avert progression of new-onset BOS. We tested this in a phase II, single-arm, open-label, multicenter study (NCT01307462). Thirty-six patients were enrolled within 6 months of BOS diagnosis. The primary endpoint was treatment failure, defined as 10% or greater forced expiratory volume in 1 second decline at 3 months. At 3 months, 6% (2 of 36, 95% confidence interval, 1% to 19%) had treatment failure (versus 40% in historical controls, P < .001). FAM was well tolerated. Steroid dose was reduced by 50% or more at 3 months in 48% of patients who could be evaluated (n = 27). Patient-reported outcomes at 3 months were statistically significantly improved for Short-Form 36 social functioning score and mental component score, Functional Assessment of Cancer Therapies emotional well-being, and Lee symptom scores in lung, skin, mouth, and the overall summary score compared to enrollment (n = 24). At 6 months, 36% had treatment failure (95% confidence interval, 21% to 54%, n = 13 of 36, with 6 documented failures, 7 missing pulmonary function tests). Overall survival was 97% (95% confidence interval, 84% to 100%) at 6 months. These data suggest that FAM was well tolerated and that treatment with FAM and steroid pulse may halt pulmonary decline in new-onset BOS in the majority of patients and permit reductions in systemic steroid exposure, which collectively may improve quality of life. However, additional treatments are needed for progressive BOS despite FAM.
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Abstract
Macrolide antimicrobials are commonly prescribed, specifically for the treatment of respiratory tract infections. Although still effective, the development of widespread macrolide resistance has limited their use. Aside from their antimicrobial effects, macrolides are also known to possess immune-modulatory properties which may confer a survival benefit in both acute and chronic inflammatory states. This review discusses the efficacy, potential mechanisms, and adverse effects of macrolide therapy specifically in community-acquired pneumonia in outpatients, hospitalized ward patients, and those requiring intensive care unit admission. Challenges for ongoing research in this field are discussed and treatment recommendations offered.
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55
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Jo KW, Yoon S, Song JW, Shim TS, Lee SW, Lee JS, Kim DY, Lee JH, Lee JH, Choi Y, Lee KH. The efficacy of prophylactic azithromycin on bronchiolitis obliterans syndrome after hematopoietic stem cell transplantation. Int J Hematol 2015; 102:357-63. [DOI: 10.1007/s12185-015-1830-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 06/16/2015] [Accepted: 06/18/2015] [Indexed: 01/08/2023]
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56
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Corris PA, Ryan VA, Small T, Lordan J, Fisher AJ, Meachery G, Johnson G, Ward C. A randomised controlled trial of azithromycin therapy in bronchiolitis obliterans syndrome (BOS) post lung transplantation. Thorax 2015; 70:442-50. [PMID: 25714615 PMCID: PMC4413845 DOI: 10.1136/thoraxjnl-2014-205998] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 01/23/2015] [Indexed: 01/08/2023]
Abstract
Background We conducted a placebo-controlled trial of azithromycin therapy in bronchiolitis obliterans syndrome (BOS) post lung transplantation. Methods We compared azithromycin (250 mg alternate days, 12 weeks) with placebo. Primary outcome was FEV1 change at 12 weeks. Results 48 patients were randomised; (25 azithromycin, 23 placebo). It was established, post randomisation that two did not have BOS. 46 patients were analysed as intention to treat (ITT) with 33 ‘Completers’. ITT analysis included placebo patients treated with open-label azithromycin after study withdrawal. Outcome The ITT analysis (n=46, 177 observations) estimated mean difference in FEV1 between treatments (azithromycin minus placebo) was 0.035 L, with a 95% CI of −0.112 L to 0.182 L (p=0.6). Five withdrawals, who were identified at the end of the study as having been randomised to placebo (four with rapid loss in FEV1, one withdrawn consent) had received rescue open-label azithromycin, with improvement in subsequent FEV1 at 12 weeks. Study Completers showed an estimated mean difference in FEV1 between treatment groups (azithromycin minus placebo) of 0.278 L, with 95% CI for the mean difference: 0.170 L to 0.386 L (p=<0.001). Nine of 23 ITT patients in the azithromycin group had ≥10% gain in FEV1 from baseline. No patients in the placebo group had ≥10% gain in FEV1 from baseline while on placebo (p=0.002). Seven serious adverse events, three azithromycin, four in the placebo group, were deemed unrelated to study medication. Conclusions Azithromycin therapy improves FEV1 in patients with BOS and appears superior to placebo. This study strengthens evidence for clinical practice of initiating azithromycin therapy in BOS. Trial registration number EU-CTR, 2006-000485-36/GB.
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Affiliation(s)
- Paul A Corris
- Institute of Transplantation, Freeman Hospital, Newcastle upon Tyne, UK Institute of Cellular Medicine, Newcastle upon Tyne, UK
| | - Victoria A Ryan
- Institute of Health and Society Newcastle University, Newcastle upon Tyne, UK
| | - Therese Small
- Institute of Transplantation, Freeman Hospital, Newcastle upon Tyne, UK
| | - James Lordan
- Institute of Transplantation, Freeman Hospital, Newcastle upon Tyne, UK
| | - Andrew J Fisher
- Institute of Transplantation, Freeman Hospital, Newcastle upon Tyne, UK Institute of Cellular Medicine, Newcastle upon Tyne, UK
| | - Gerard Meachery
- Institute of Transplantation, Freeman Hospital, Newcastle upon Tyne, UK
| | - Gail Johnson
- Institute of Transplantation, Freeman Hospital, Newcastle upon Tyne, UK
| | - Chris Ward
- Institute of Cellular Medicine, Newcastle upon Tyne, UK
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Intensivbehandlung nach Transplantation solider Organe. DIE INTENSIVMEDIZIN 2015. [PMCID: PMC7124053 DOI: 10.1007/978-3-642-54953-3_90] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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58
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Ratzinger F, Haslacher H, Poeppl W, Hoermann G, Kovarik JJ, Jutz S, Steinberger P, Burgmann H, Pickl WF, Schmetterer KG. Azithromycin suppresses CD4(+) T-cell activation by direct modulation of mTOR activity. Sci Rep 2014; 4:7438. [PMID: 25500904 PMCID: PMC4262884 DOI: 10.1038/srep07438] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 11/21/2014] [Indexed: 12/31/2022] Open
Abstract
Advanced macrolides, such as azithromycin (AZM) or clarithromycin (CLM), are antibiotics with immunomodulatory properties. Here we have sought to evaluate their in vitro influence on the activation of CD4(+) T-cells. Isolated CD4(+) T-cells were stimulated with agonistic anti-CD3/anti-CD28 monoclonal antibodies in the presence of 0.6 mg/L, 2.5 mg/L, 10 mg/L or 40 mg/L AZM or CLM. Cell proliferation, cytokine level in supernatants and cell viability was assessed. Intracellular signaling pathways were evaluated using reporter cell lines, FACS analysis, immunoblotting and in vitro kinase assays. AZM inhibited cell proliferation rate and cytokine secretion of CD4(+) T-cells in a dose-dependent manner. Similarly, high concentrations of CLM (40 mg/L) also suppressed these T-cell functions. Analysis of molecular signaling pathways revealed that exposure to AZM reduced the phosphorylation of the S6 ribosomal protein, a downstream target of mTOR. This effect was also observed at 40 mg/L CLM. In vitro kinase studies using recombinant mTOR showed that AZM inhibited mTOR activity. In contrast to rapamycin, this inhibition was independent of FKBP12. We show for the first time that AZM and to a lesser extent CLM act as immunosuppressive agents on CD4(+) T-cells by inhibiting mTOR activity. Our results might have implications for the clinical use of macrolides.
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Affiliation(s)
- F. Ratzinger
- Department of Laboratory Medicine, Medical University of Vienna, Austria
| | - H. Haslacher
- Department of Laboratory Medicine, Medical University of Vienna, Austria
| | - W. Poeppl
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine I, Medical University of Vienna, Austria
| | - G. Hoermann
- Department of Laboratory Medicine, Medical University of Vienna, Austria
| | - J. J. Kovarik
- Clinical Division of Nephrology and Dialysis, Department of Internal Medicine III, Medical University of Vienna, Austria
| | - S. Jutz
- Institute of Immunology, Medical University of Vienna, Austria
| | - P. Steinberger
- Institute of Immunology, Medical University of Vienna, Austria
| | - H. Burgmann
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine I, Medical University of Vienna, Austria
| | - W. F. Pickl
- Institute of Immunology, Medical University of Vienna, Austria
| | - K. G. Schmetterer
- Department of Laboratory Medicine, Medical University of Vienna, Austria
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59
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Meyer KC, Raghu G, Verleden GM, Corris PA, Aurora P, Wilson KC, Brozek J, Glanville AR. An international ISHLT/ATS/ERS clinical practice guideline: diagnosis and management of bronchiolitis obliterans syndrome. Eur Respir J 2014; 44:1479-503. [PMID: 25359357 DOI: 10.1183/09031936.00107514] [Citation(s) in RCA: 380] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Bronchiolitis obliterans syndrome (BOS) is a major complication of lung transplantation that is associated with poor survival. The International Society for Heart and Lung Transplantation, American Thoracic Society, and European Respiratory Society convened a committee of international experts to describe and/or provide recommendations for 1) the definition of BOS, 2) the risk factors for developing BOS, 3) the diagnosis of BOS, and 4) the management and prevention of BOS. A pragmatic evidence synthesis was performed to identify all unique citations related to BOS published from 1980 through to March, 2013. The expert committee discussed the available research evidence upon which the updated definition of BOS, identified risk factors and recommendations are based. The committee followed the GRADE (Grading of Recommendation, Assessment, Development and Evaluation) approach to develop specific clinical recommendations. The term BOS should be used to describe a delayed allograft dysfunction with persistent decline in forced expiratory volume in 1 s that is not caused by other known and potentially reversible causes of post-transplant loss of lung function. The committee formulated specific recommendations about the use of systemic corticosteroids, cyclosporine, tacrolimus, azithromycin and about re-transplantation in patients with suspected and confirmed BOS. The diagnosis of BOS requires the careful exclusion of other post-transplant complications that can cause delayed lung allograft dysfunction, and several risk factors have been identified that have a significant association with the onset of BOS. Currently available therapies have not been proven to result in significant benefit in the prevention or treatment of BOS. Adequately designed and executed randomised controlled trials that properly measure and report all patient-important outcomes are needed to identify optimal therapies for established BOS and effective strategies for its prevention.
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Affiliation(s)
- Keith C Meyer
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Ganesh Raghu
- School of Medicine, University of Washington, Seattle, WA, USA
| | | | | | - Paul Aurora
- Great Ormond Street Hospital for Children, London, UK
| | | | - Jan Brozek
- McMaster University, Hamilton, ON, Canada
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Hodge S, Hodge G, Holmes M, Jersmann H, Reynolds PN. Increased CD8 T-cell granzyme B in COPD is suppressed by treatment with low-dose azithromycin. Respirology 2014; 20:95-100. [DOI: 10.1111/resp.12415] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 07/14/2014] [Accepted: 07/28/2014] [Indexed: 11/30/2022]
Affiliation(s)
- Sandra Hodge
- Lung Research Laboratory; Hanson Institute; Adelaide South Australia Australia
- Department of Thoracic Medicine; Royal Adelaide Hospital; Adelaide South Australia Australia
| | - Greg Hodge
- Lung Research Laboratory; Hanson Institute; Adelaide South Australia Australia
- Department of Thoracic Medicine; Royal Adelaide Hospital; Adelaide South Australia Australia
| | - Mark Holmes
- Lung Research Laboratory; Hanson Institute; Adelaide South Australia Australia
- Department of Thoracic Medicine; Royal Adelaide Hospital; Adelaide South Australia Australia
| | - Hubertus Jersmann
- Lung Research Laboratory; Hanson Institute; Adelaide South Australia Australia
- Department of Thoracic Medicine; Royal Adelaide Hospital; Adelaide South Australia Australia
| | - Paul N. Reynolds
- Lung Research Laboratory; Hanson Institute; Adelaide South Australia Australia
- Department of Thoracic Medicine; Royal Adelaide Hospital; Adelaide South Australia Australia
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61
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Evers A, Atanasova S, Fuchs-Moll G, Petri K, Wilker S, Zakrzewicz A, Hirschburger M, Padberg W, Grau V. Adaptive and innate immune responses in a rat orthotopic lung transplant model of chronic lung allograft dysfunction. Transpl Int 2014; 28:95-107. [PMID: 25179205 DOI: 10.1111/tri.12444] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 07/20/2014] [Accepted: 08/28/2014] [Indexed: 01/15/2023]
Abstract
Acute rejection and respiratory infections are major risk factors for chronic lung allograft dysfunction (CLAD) after lung transplantation. To shed light on the enigmatic etiology of CLAD, we test the following hypotheses using a new experimental model: (i) Alloimmune-independent pulmonary inflammation reactivates alloimmunity. (ii) Alloimmunity enhances the susceptibility of the graft toward pathogen-associated molecular patterns. Pulmonary Fischer 344 to Lewis rat allografts were treated with lipopolysaccharide (LPS), which consistently results in lesions typical for CLAD. Grafts, local lymph nodes, and spleens were harvested before (day 28) and after LPS application (days 29, 33, and 40) for real-time RT-PCR and immunohistochemistry. Mixed lymphocyte reactions were performed on day 33. Four weeks after transplantation, lung allografts displayed mononuclear infiltrates compatible with acute rejection and overexpressed most components of the toll-like receptor system. Allografts but not secondary lymphoid organs expressed increased levels of Th1-type transcription factors and cytokines. LPS induced macrophage infiltration as well as mRNA expression of pro-inflammatory cytokines and effector molecules of innate immunity. Unexpectedly, T-cell reactivity was not enhanced by LPS. We conclude that prevention of CLAD might be accomplished by local suppression of Th1 cells in stable grafts and by controlling innate immunity during alloimmune-independent pulmonary inflammation.
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Affiliation(s)
- Alena Evers
- Laboratory of Experimental Surgery, Department of General and Thoracic Surgery, Member of the German Centre for Lung Research, Justus-Liebig-University Giessen, Giessen, Germany
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Li YN, Liu L, Qiao HM, Cheng H, Cheng HJ. Post-infectious bronchiolitis obliterans in children: a review of 42 cases. BMC Pediatr 2014; 14:238. [PMID: 25252824 PMCID: PMC4181416 DOI: 10.1186/1471-2431-14-238] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 09/17/2014] [Indexed: 11/25/2022] Open
Abstract
Background This study aimed to describe the clinical characteristics, radiological features and outcomes of 42 children with post-infectious bronchiolitis obliterans (PIBO). Methods Forty-two children diagnosed with PIBO were prospectively studied at the First Hospital of Jilin University in northern China between January, 2008 and January, 2013. Their clinical characteristics, lung high resolution computed tomography (HRCT) findings and pulmonary function tests were reported. Results In children with PIBO, adenovirus was the most common etiologic agent (21/42), followed by Mycoplasma pneumoniae (M. pneumoniae). All of the patients presented with repeated wheezing and tachypnea. In addition, 22 patients required intensive management, while six patients required home oxygen therapy. HRCT findings were consistent with the PIBO diagnosis in all of the patients. Pulmonary function testing was useful in evaluating therapeutic responses. Systemic steroids combined with azithromycin were effective for PIBO treatment. Conclusions Severe adenovirus bronchiolitis and M. pneumoniae infections have a higher risk of development for PIBO. HRCT and pulmonary function testing are useful in the diagnosis of PIBO. The degree of airway obstruction did not differ significantly between adenovirus and M. pneumoniae. A combination of steroids and azithromycin offers some benefit in treating these patients.
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Affiliation(s)
| | | | | | | | - Huan-Ji Cheng
- Department of Pediatrics, The First Hospital of Jilin University, Changchun 130021, PR China.
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Verleden GM, Vos R, Dupont L, Van Raemdonck DE, Vanaudenaerde BM, Verleden SE. Are we near to an effective drug treatment for bronchiolitis obliterans? Expert Opin Pharmacother 2014; 15:2117-20. [DOI: 10.1517/14656566.2014.954549] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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64
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Knobler R, Berlin G, Calzavara-Pinton P, Greinix H, Jaksch P, Laroche L, Ludvigsson J, Quaglino P, Reinisch W, Scarisbrick J, Schwarz T, Wolf P, Arenberger P, Assaf C, Bagot M, Barr M, Bohbot A, Bruckner-Tuderman L, Dreno B, Enk A, French L, Gniadecki R, Gollnick H, Hertl M, Jantschitsch C, Jung A, Just U, Klemke CD, Lippert U, Luger T, Papadavid E, Pehamberger H, Ranki A, Stadler R, Sterry W, Wolf IH, Worm M, Zic J, Zouboulis CC, Hillen U. Guidelines on the use of extracorporeal photopheresis. J Eur Acad Dermatol Venereol 2014; 28 Suppl 1:1-37. [PMID: 24354653 PMCID: PMC4291097 DOI: 10.1111/jdv.12311] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/07/2013] [Indexed: 01/10/2023]
Abstract
BACKGROUND After the first investigational study on the use of extracorporeal photopheresis for the treatment of cutaneous T-cell lymphoma was published in 1983 with its subsequent recognition by the FDA for its refractory forms, the technology has shown significant promise in the treatment of other severe and refractory conditions in a multi-disciplinary setting. Among the major studied conditions are graft versus host disease after allogeneic bone marrow transplantation, systemic sclerosis, solid organ transplant rejection and inflammatory bowel disease. MATERIALS AND METHODS In order to provide recognized expert practical guidelines for the use of this technology for all indications the European Dermatology Forum (EDF) proceeded to address these questions in the hands of the recognized experts within and outside the field of dermatology. This was done using the recognized and approved guidelines of EDF for this task. RESULTS AND CONCLUSION These guidelines provide at present the most comprehensive available expert recommendations for the use of extracorporeal photopheresis based on the available published literature and expert consensus opinion.
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Affiliation(s)
- R Knobler
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
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Scheffert JL, Raza K. Immunosuppression in lung transplantation. J Thorac Dis 2014; 6:1039-53. [PMID: 25132971 DOI: 10.3978/j.issn.2072-1439.2014.04.23] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 04/16/2014] [Indexed: 01/10/2023]
Abstract
Lung transplantation can be a life-saving procedure for those with end-stage lung diseases. Unfortunately, long term graft and patient survival are limited by both acute and chronic allograft rejection, with a median survival of just over 6 years. Immunosuppressive regimens are employed to reduce the rate of rejection, and while protocols vary from center to center, conventional maintenance therapy consists of triple drug therapy with a calcineurin inhibitor (cyclosporine or tacrolimus), antiproliferative agents [azathioprine (AZA), mycophenolate, sirolimus (srl), everolimus (evl)], and corticosteroids (CS). Roughly 50% of lung transplant centers also utilize induction therapy, with polyclonal antibody preparations [equine or rabbit anti-thymocyte globulin (ATG)], interleukin 2 receptor antagonists (IL2RAs) (daclizumab or basiliximab), or alemtuzumab. This review summarizes these agents and the data surrounding their use in lung transplantation, as well as additional common and novel therapies in lung transplantation. Despite the progression of the management of lung transplant recipients, they continue to be at high risk of treatment-related complications, and poor graft and patient survival. Randomized clinical trials are needed to allow for the development of better agents, regimens and techniques to address above mentioned issues and reduce morbidity and mortality among lung transplant recipients.
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Affiliation(s)
- Jenna L Scheffert
- 1 NewYork-Presbyterian Hospital/Columbia University Medical Center, Department of Pharmacy, USA ; 2 Lung Transplant Program, Department of Pulmonary, Allergy and Critical Care Medicine, Columbia University Medical Center, USA
| | - Kashif Raza
- 1 NewYork-Presbyterian Hospital/Columbia University Medical Center, Department of Pharmacy, USA ; 2 Lung Transplant Program, Department of Pulmonary, Allergy and Critical Care Medicine, Columbia University Medical Center, USA
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Clajus C, Blasi F, Welte T, Greer M, Fuehner T, Mantero M. Therapeutic approach to respiratory infections in lung transplantation. Pulm Pharmacol Ther 2014; 32:149-54. [PMID: 25038552 PMCID: PMC7110868 DOI: 10.1016/j.pupt.2014.07.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 07/09/2014] [Indexed: 01/22/2023]
Abstract
Lung transplant recipients (LTRs) are at life-long risk for infections and disseminated diseases owing to their immunocompromised state. Besides organ failure and sepsis, infection can trigger acute and chronic graft rejection which increases mortality. Medical prophylaxis and treatment are based on comprehensive diagnostic work-up including previous history of infection and airway colonisation to reduce long-term complications and mortality. Common bacterial pathogens include Pseudomonas and Staphylococcus, whilst Aspergillus and Cytomegalovirus (CMV) are respectively the commonest fungal and viral pathogens. Clinical symptoms can be various in lung transplant recipients presenting an asymptomatic to severe progress. Regular control of infection parameters, daily lung function testing and lifelong follow-up in a specialist transplant centre are mandatory for early detection of bacterial, viral and fungal infections. After transplantation each patient receives intensive training with rules of conduct concerning preventive behaviour and to recognize early signs of post transplant complications. Early detection of infection and complications are important goals to reduce major complications after lung transplantation.
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Affiliation(s)
- Carolina Clajus
- Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany.
| | - Francesco Blasi
- Department of Pathophysiology and Transplantation, University of Milan, IRCCS Fondazione Ospedale Maggiore, Policlinico Cà Granda Milano, Italy
| | - Tobias Welte
- Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
| | - Mark Greer
- Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
| | - Thomas Fuehner
- Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
| | - Marco Mantero
- Department of Pathophysiology and Transplantation, University of Milan, IRCCS Fondazione Ospedale Maggiore, Policlinico Cà Granda Milano, Italy
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Kingah PL, Muma G, Soubani A. Azithromycin improves lung function in patients with post-lung transplant bronchiolitis obliterans syndrome: a meta-analysis. Clin Transplant 2014; 28:906-10. [PMID: 24931185 DOI: 10.1111/ctr.12401] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2014] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Azithromycin has been shown to reverse or halt the decline of forced expiratory volume in one s (FEV1) in patients with bronchiolitis obliterans (BOS) syndrome following lung transplant. The overall effect of azithromycin on the absolute values of FEV1 has not been compared between reported studies. We studied the effects of azithromycin on lung function in patients with post-lung transplant BOS syndrome. METHODS A meta-analysis was performed using studies identified following an extensive database search. To be included, studies were published in English or French and explicitly reported percentage change in FEV1 or hazard ratios. RESULTS A total of 10 studies were included in this review. One hundred and forty patients were evaluated after treatment with azithromycin for an average follow-up period of seven months. The mean percentage increase in FEV1 was 8.8 (CI 5.1-12.47) p < 0.001. The pooled hazard ratio was 0.25 (CI 0.06-0.56) p = 0.041 for a mean follow-up period of 2.9 yr. CONCLUSION This study demonstrated a significant improvement in lung function in patients with BOS syndrome following lung transplant after seven months of treatment. It remains uncertain whether this improvement stays after seven months. We also found that patients on azithromycin were less likely to die from BOS syndrome compared with patients who were not on azithromycin.
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Affiliation(s)
- Pascal L Kingah
- Detroit Medical Center, Harper University Hospital, Detroit, MI, USA
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Abstract
The enduring success of lung transplantation is built on the use of immunosuppressive drugs to stop the immune system from rejecting the newly transplanted lung allograft. Most patients receive a triple-drug maintenance immunosuppressive regimen consisting of a calcineurin inhibitor, an antiproliferative and corticosteroids. Induction therapy with either an antilymphocyte monoclonal or an interleukin-2 receptor antagonist are prescribed by many centres aiming to achieve rapid inhibition of recently activated and potentially alloreactive T lymphocytes. Despite this generic approach acute rejection episodes remain common, mandating further fine-tuning and augmentation of the immunosuppressive regimen. While there has been a trend away from cyclosporine and azathioprine towards a preference for tacrolimus and mycophenolate mofetil, this has not translated into significant protection from the development of chronic lung allograft dysfunction, the main barrier to the long-term success of lung transplantation. This article reviews the problem of lung allograft rejection and the evidence for immunosuppressive regimens used both in the short- and long-term in patients undergoing lung transplantation.
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Bronchial wall measurements in patients after lung transplantation: evaluation of the diagnostic value for the diagnosis of bronchiolitis obliterans syndrome. PLoS One 2014; 9:e93783. [PMID: 24713820 PMCID: PMC3979715 DOI: 10.1371/journal.pone.0093783] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 03/06/2014] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES To prospectively evaluate quantitative airway wall measurements of thin-section CT for the diagnosis of Bronchiolitis Obliterans Syndrome (BOS) following lung transplantation. MATERIALS AND METHODS In 141 CT examinations, bronchial wall thickness (WT), the wall area percentage (WA%) calculated as the ratio of the bronchial wall area and the total area (sum of bronchial wall area and bronchial lumen area) and the difference of the WT on inspiration and expiration (WTdiff) were automatically measured in different bronchial generations. The measurements were correlated with the lung function parameters. WT and WA% in CT examinations of patients with (n = 25) and without (n = 116) BOS, were compared using the unpaired t-test and univariate analysis of variance, while also considering the differing lung volumes. RESULTS Measurements could be performed in 2,978 bronchial generations. WT, WA%, and WTdiff did not correlate with the lung function parameters (r<0.5). The WA% on inspiration was significantly greater in patients with BOS than in patients without BOS, even when considering the dependency of the lung volume on the measurements. WT on inspiration and expiration and WA% on expiration did not show significant differences between the groups. CONCLUSION WA% on inspiration was significantly greater in patients with than in those without BOS. However, WA% measurements were significantly dependent on lung volume and showed a high variability, thus not allowing the sole use of bronchial wall measurements to differentiate patients with from those without BOS.
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Parnham MJ, Erakovic Haber V, Giamarellos-Bourboulis EJ, Perletti G, Verleden GM, Vos R. Azithromycin: mechanisms of action and their relevance for clinical applications. Pharmacol Ther 2014; 143:225-45. [PMID: 24631273 DOI: 10.1016/j.pharmthera.2014.03.003] [Citation(s) in RCA: 364] [Impact Index Per Article: 36.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 03/04/2014] [Indexed: 01/02/2023]
Abstract
Azithromycin is a macrolide antibiotic which inhibits bacterial protein synthesis, quorum-sensing and reduces the formation of biofilm. Accumulating effectively in cells, particularly phagocytes, it is delivered in high concentrations to sites of infection, as reflected in rapid plasma clearance and extensive tissue distribution. Azithromycin is indicated for respiratory, urogenital, dermal and other bacterial infections, and exerts immunomodulatory effects in chronic inflammatory disorders, including diffuse panbronchiolitis, post-transplant bronchiolitis and rosacea. Modulation of host responses facilitates its long-term therapeutic benefit in cystic fibrosis, non-cystic fibrosis bronchiectasis, exacerbations of chronic obstructive pulmonary disease (COPD) and non-eosinophilic asthma. Initial, stimulatory effects of azithromycin on immune and epithelial cells, involving interactions with phospholipids and Erk1/2, are followed by later modulation of transcription factors AP-1, NFκB, inflammatory cytokine and mucin release. Delayed inhibitory effects on cell function and high lysosomal accumulation accompany disruption of protein and intracellular lipid transport, regulation of surface receptor expression, of macrophage phenotype and autophagy. These later changes underlie many immunomodulatory effects of azithromycin, contributing to resolution of acute infections and reduction of exacerbations in chronic airway diseases. A sub-group of post-transplant bronchiolitis patients appears to be sensitive to azithromycin, as may be patients with severe sepsis. Other promising indications include chronic prostatitis and periodontitis, but weak activity in malaria is unlikely to prove crucial. Long-term administration of azithromycin must be balanced against the potential for increased bacterial resistance. Azithromycin has a very good record of safety, but recent reports indicate rare cases of cardiac torsades des pointes in patients at risk.
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Affiliation(s)
- Michael J Parnham
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Project Group Translational Medicine and Pharmacology, Frankfurt am Main, Germany; Institute of Pharmacology for Life Scientists, Goethe University Frankfurt, Frankfurt am Main, Germany; Institute of Clinical Pharmacology, Goethe University Frankfurt, Frankfurt am Main, Germany.
| | | | - Evangelos J Giamarellos-Bourboulis
- 4th Department of Internal Medicine, University of Athens, Medical School, Athens, Greece; Integrated Research and Treatment Center, Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany.
| | - Gianpaolo Perletti
- Biomedical Research Division, Department of Theoretical and Applied Sciences, University of Insubria, Busto A., Varese, Italy; Department of Basic Medical Sciences, Ghent University, Ghent, Belgium.
| | - Geert M Verleden
- Respiratory Division, Lung Transplantation Unit, University Hospitals Leuven and Department of Clinical and Experimental Medicine, KU Leuven, Belgium.
| | - Robin Vos
- Respiratory Division, Lung Transplantation Unit, University Hospitals Leuven and Department of Clinical and Experimental Medicine, KU Leuven, Belgium.
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71
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Home spirometry as early detector of azithromycin refractory bronchiolitis obliterans syndrome in lung transplant recipients. Respir Med 2014; 108:405-12. [DOI: 10.1016/j.rmed.2013.12.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2013] [Revised: 12/10/2013] [Accepted: 12/30/2013] [Indexed: 11/18/2022]
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Kamler M, Pizanis N. Aktueller Stand der Lungentransplantation. ZEITSCHRIFT FUR HERZ THORAX UND GEFASSCHIRURGIE 2013; 27:383-390. [PMID: 32288288 PMCID: PMC7102131 DOI: 10.1007/s00398-013-1005-3] [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] [Received: 01/22/2013] [Accepted: 02/08/2013] [Indexed: 11/25/2022]
Abstract
Die Lungentransplantation ist eine akzeptierte Behandlungsmethode für ausgewählte Patienten mit Lungenerkrankungen im Endstadium. Durch die Transplantation können die Überlebenszeit und die Lebensqualität der Betroffenen verbessert werden. Sowohl pulmonale als auch nichtpulmonale Komplikationen beeinträchtigen die Kurz- und die Langzeitergebnisse. Entscheidend bei der Therapie dieser Komplikationen sind das frühzeitige Erkennen und die schnelle Behandlung zur Verhinderung von sekundären Folgekomplikationen. Dieser Beitrag gibt einen Überblick über die häufigsten Probleme der Lungentransplantation, die im peri- und postoperativen Verlauf auftreten können.
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Affiliation(s)
- M. Kamler
- Klinik für Thorax und Kardiovaskuläre Chirurgie, Thorakale Transplantation, Westdeutsches Herzzentrum Essen, Universitätsklinikum Essen, Hufelandstr. 55, 45133 Essen, Deutschland
| | - N. Pizanis
- Klinik für Thorax und Kardiovaskuläre Chirurgie, Thorakale Transplantation, Westdeutsches Herzzentrum Essen, Universitätsklinikum Essen, Hufelandstr. 55, 45133 Essen, Deutschland
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73
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Verleden GM, Raghu G, Meyer KC, Glanville AR, Corris P. A new classification system for chronic lung allograft dysfunction. J Heart Lung Transplant 2013; 33:127-33. [PMID: 24374027 DOI: 10.1016/j.healun.2013.10.022] [Citation(s) in RCA: 398] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 10/18/2013] [Accepted: 10/23/2013] [Indexed: 11/15/2022] Open
Abstract
Although survival after lung transplantation has improved significantly during the last decade, chronic rejection is thought to be the major cause of late mortality. The physiologic hallmark of chronic rejection has been a persistent fall in forced expiratory volume in 1 second associated with an obstructive ventilatory defect, for which the term bronchiolitis obliterans syndrome (BOS) was defined to allow a uniformity of description and grading of severity throughout the world. Although BOS was generally thought to be irreversible, recent evidence suggests that some patients with BOS may respond to azithromycin with > 10% improvement in their forced expiratory volume in 1 second. In addition, a restrictive form of chronic rejection has recently been described that does not fit the strict definition of BOS as an obstructive defect. Hence, the term chronic lung allograft dysfunction (CLAD) has been introduced to cover all forms of graft dysfunction, but CLAD has yet to be defined. We propose a definition of CLAD and a flow chart that may facilitate recognition of the different phenotypes of CLAD that can complicate the clinical course of lung transplant recipients.
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Affiliation(s)
- Geert M Verleden
- University Hospital Gasthuisberg, Lung Transplantation Unit, Leuven, Belgium.
| | - Ganesh Raghu
- University of Washington School of Medicine, Seattle, Washington
| | - Keith C Meyer
- University of Wisconsin, School of Medicine and Public Health, Madison, Wisconsin
| | - Allan R Glanville
- The Lung Transplant Unit, St Vincent's Hospital, Darlinghurst, Australia
| | - Paul Corris
- Department of Respiratory Medicine, Institute of Transplantation and Institute of Cellular Medicine, Newcastle University and The Newcastle upon Tyne Hospitals NHS Foundation Trust Newcastle upon Tyne, United Kingdom
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74
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Smith FO, Reaman GH, Racadio JM. Pulmonary and Hepatic Complications of Hematopoietic Cell Transplantation. ACTA ACUST UNITED AC 2013. [PMCID: PMC7123560 DOI: 10.1007/978-3-642-39920-6_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | - Judy M. Racadio
- Division of Hematology/Oncology, Dept. of Internal Medicine, University of Cincinnati College of Medicine, Madeira, Ohio USA
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75
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Mosquera RA, Hashmi SS, Pacheco SE, Reverdin A, Chevallier J, Colasurdo GN. Dysanaptic growth of lung and airway in children with post-infectious bronchiolitis obliterans. CLINICAL RESPIRATORY JOURNAL 2013; 8:63-71. [PMID: 23800208 DOI: 10.1111/crj.12037] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 04/16/2013] [Accepted: 06/18/2013] [Indexed: 11/28/2022]
Abstract
RATIONALE Post-infectious bronchiolitis obliterans (PBO) is a rare form of chronic obstructive lung disease associated with small airway fibrosis following a severe insult to the lower respiratory tract. It has been suggested that PBO is a non-progressive disease. However, evidence supporting this statement is limited. In this case series, we sought to determine the changes of pulmonary function tests (PFT) over time in children with PBO. METHODS Seven children with PBO, ages 6-15 years old, were retrospectively studied between 1994 and 2012. Spirometry and lung volumes tests were performed in accordance with American Thoracic Society (ATS) guidelines and were monitored over time. The average rate of change was calculated using generalized linear mixed models. RESULTS The median baseline values for forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), the FEV1/FVC ratio and forced expiratory flow 25%-75% (FEF25%-75%) were 57%, 50%, 87% and 29%, respectively. FVC increased at a rate of 1.8% per year (P = 0.008). There was no significant change in FEV1 over time (P = 0.112). However, the FEV1/FVC ratio decreased by 2.6% per year (P < 0.001). CONCLUSION PFT in childhood PBO was characterized by significant airway obstruction. Over time, FVC (lung parenchyma) increased and FEV1 (airway) remained stable, but FEV1/FVC ratio declined more than expected, suggesting a mismatch in the growth of the airway and lung parenchyma (dysanaptic growth). Further studies in larger populations are needed to validate these observations.
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Affiliation(s)
- Ricardo A Mosquera
- Division of Pulmonary Medicine, Department of Pediatrics, University of Texas Medical School at Houston, Houston, TX, USA
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76
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A relevant experimental model for human bronchiolitis obliterans syndrome. J Heart Lung Transplant 2013; 32:1131-9. [PMID: 24050896 DOI: 10.1016/j.healun.2013.07.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 07/02/2013] [Accepted: 07/18/2013] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND The long-term success of human lung transplantation is limited by the development of bronchiolitis obliterans syndrome. Acute rejection episodes and infections are important risk factors and seem to play major pathogenic roles. We established a relevant experimental model that mimics important aspects of human bronchiolitis obliterans syndrome. METHODS The Fischer 344-to-Lewis rat strain combination was used for orthotopic left lung transplantation. Isogeneic transplantations were performed in the Lewis rat. Recipients were treated with ciclosporin for 10 days. Lipopolysaccharide or vehicle was instilled into the airways 28 days after transplantation. Grafts were monitored by computed tomography, and recipients were euthanized on Days 28-90. The messenger RNA expression of selected chemokines and their receptors was measured on Days 28, 29, 33, 40 after transplantation. Graft histopathology on Day 90 was compared with lungs from patients who underwent re-transplantation due to end-stage allograft dysfunction. RESULTS Lung allografts treated with ciclosporin and vehicle only sporadically displayed tissue remodeling. In contrast, lipopolysaccharide treatment induced severe inflammation. In the long-term, severe vascular remodeling, lung fibrosis, and fibroproliferative remodeling of airways were found that closely resemble the histopathologic changes in grafts from human patients with bronchiolitis obliterans syndrome. Chronic damage was virtually absent from pulmonary isografts and native right lungs. Chemokine (C-C motif) ligand 5 and chemokine (C-X-C motif) ligand 9-11, and their receptors, were over-expressed in allografts. CONCLUSIONS Our experimental model mirrors key aspects of human bronchiolitis obliterans syndrome. It will be useful to elucidate its pathogenesis and to develop therapeutic approaches improving the long-term outcome of human lung transplantation.
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77
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Snell GI, Paraskeva M, Westall GP. Managing bronchiolitis obliterans syndrome (BOS) and chronic lung allograft dysfunction (CLAD) in children: what does the future hold? Paediatr Drugs 2013; 15:281-9. [PMID: 23605986 DOI: 10.1007/s40272-013-0026-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The success of pediatric lung transplantation continues to be limited by long-term graft dysfunction. Historically this has been characterized as an obstructive spirometric defect in the form of the bronchiolitis obliterans syndrome (BOS). It is recognized, however, that this does not reflect many of the other acknowledged etiologies of chronic lung dysfunction-noting it is the sum of the parts that contribute to respiratory morbidity and mortality after transplant. The term chronic lung allograft dysfunction (CLAD) has been coined to reflect these other entities and, in particular, a group of relatively recently described lung disorders called the restrictive allograft syndrome (RAS). RAS is characterized by a restrictive spirometric defect. Although these entities have not yet been studied in a pediatric setting their association with poor compliance, antibody-mediated rejection (AMR), and post-infectious lung damage (particularly viral) warrants attention by pediatric lung transplant teams. Current therapy for the BOS subset of CLAD is otherwise limited to changing immunosuppressants and avoiding excessive infectious risk by avoiding over-immunosuppression. Long-term macrolide therapy in lung transplantation is not of proven efficacy. Reviewing previous BOS studies to explore restrictive spirometric cases and joint projects via groups like the International Pediatric Lung Transplant Collaborative will be the way forward to solve this pressing problem.
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Affiliation(s)
- Gregory I Snell
- National Paediatric Lung Transplant Service, Alfred Hospital and Monash University, Melbourne 3004, Australia.
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78
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Bronchiolitis obliterans syndrome and restrictive allograft syndrome: do risk factors differ? Transplantation 2013; 95:1167-72. [PMID: 23425818 DOI: 10.1097/tp.0b013e318286e076] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Chronic rejection is the major problem hampering long-term survival after lung transplantation. Recently, it became clear that patients may develop an obstructive (bronchiolitis obliterans syndrome [BOS]) or a restrictive lung function defect (restrictive allograft syndrome [RAS]), for which specific risk factors are unknown. METHODS A retrospective analysis of our lung transplantation cohort was performed (n=380). Patients with an irreversible decline in forced expiratory volume in 1 second were identified and classified as BOS or RAS. Patient characteristics, bronchoalveolar lavage (BAL) cellularity, rates of respiratory tract infection, colonization, acute rejection, and lymphocytic bronchiolitis were compared between BOS, RAS, and stable patients. RESULTS There were 103 patients suffering from chronic rejection, of which 79 had BOS and 24 were diagnosed with RAS. There were more patients with infection and pseudomonal colonizations in BOS and RAS compared with control (P=0.0090 and P=0.0034, respectively). More patients ever experienced acute and severe acute rejections (A≥2; both P<0.0001) and lymphocytic bronchiolitis (P=0.0006) in BOS and RAS versus control. There were more patients experiencing severe lymphocytic bronchiolitis in RAS compared with BOS (P=0.031). BAL neutrophilia in BOS and RAS were elevated at days 360, 540, and 720 versus control. BOS, but especially RAS patients, experienced more frequent episodes of increased BAL eosinophilia (≥2%; P<0.0001). CONCLUSION Acute rejection, lymphocytic bronchiolitis, colonization with pseudomonas, infection, and BAL eosinophilia and neutrophilia are risk factors for the later development not only of RAS but also of BOS.
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Abstract
PURPOSE OF REVIEW Over the past 20 years, tremendous strides have been made to decrease treatment-related morbidity and mortality following allogeneic transplant, including management of acute and chronic lung injury. Within this context, three distinct entities are recognized, idiopathic pneumonia syndrome (IPS), bronchiolitis obliterans syndrome (BOS), and bronchiolitis obliterans organizing pneumonia (BOOP). Management options for each of these disorders are now reviewed. RECENT FINDINGS A recent pilot study and subsequent phase II trial suggest that tumor necrosis factor (TNF) inhibitors hold promise in treating IPS. A randomized phase III trial ended prematurely, without a definitive conclusion regarding TNF inhibitors established. Few prospective trials for BOS have been performed, with current therapy based on observational studies and small case reports. Therapy for BOOP is based upon minimal clinical evidence. SUMMARY Although corticosteroids remain the backbone of therapy for IPS, BOS, and BOOP, TNF inhibition may augment management of IPS and potentially BOS as well. Diagnostic criteria for IPS and BOS have been established, although optimal treatment strategies will ultimately require consensus monitoring and response criteria, coupled with an improved understanding of the pathophysiology underlying each disorder. For BOS and BOOP in particular, therapy has been based upon a paucity of data and anecdotal experiences.
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Weigt SS, DerHovanessian A, Wallace WD, Lynch JP, Belperio JA. Bronchiolitis obliterans syndrome: the Achilles' heel of lung transplantation. Semin Respir Crit Care Med 2013; 34:336-51. [PMID: 23821508 PMCID: PMC4768744 DOI: 10.1055/s-0033-1348467] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Lung transplantation is a therapeutic option for patients with end-stage pulmonary disorders. Unfortunately, chronic lung allograft dysfunction (CLAD), most commonly manifest as bronchiolitis obliterans syndrome (BOS), continues to be highly prevalent and is the major limitation to long-term survival. The pathogenesis of BOS is complex and involves alloimmune and nonalloimmune pathways. Clinically, BOS manifests as airway obstruction and dyspnea that are classically progressive and ultimately fatal; however, the course is highly variable, and distinguishable phenotypes may exist. There are few controlled studies assessing treatment efficacy, but only a minority of patients respond to current treatment modalities. Ultimately, preventive strategies may prove more effective at prolonging survival after lung transplantation, but their remains considerable debate and little data regarding the best strategies to prevent BOS. A better understanding of the risk factors and their relationship to the pathological mechanisms of chronic lung allograft rejection should lead to better pharmacological targets to prevent or treat this syndrome.
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Affiliation(s)
- S Samuel Weigt
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California 90095, USA.
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Development of a population pharmacokinetic model to describe azithromycin whole-blood and plasma concentrations over time in healthy subjects. Antimicrob Agents Chemother 2013; 57:3194-201. [PMID: 23629714 DOI: 10.1128/aac.02430-12] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Azithromycin (AZI), a broad-spectrum antibiotic, accumulates in polymorphonuclear cells and peripheral blood mononuclear cells. The distribution of AZI in proinflammatory cells may be important to the anti-inflammatory properties. Previous studies have described plasma AZI pharmacokinetics. The objective of this study was to describe the pharmacokinetics of AZI in whole blood (concentration in whole blood [Cb]) and plasma (concentration in plasma [Cp]) of healthy subjects. In this study, 12 subjects received AZI (500 mg once a day for 3 days). AZI Cb and Cp were quantified in serial samples collected up to 3 weeks after the last dose and analyzed using noncompartmental and compartmental methods. After the last dose, Cb was greater than Cp. Importantly, Cb, but not Cp, was quantifiable in all but one subject at 3 weeks. The blood area under the curve during a 24-h dosing interval (AUC24) was ∼2-fold greater than the plasma AUC24, but simulations suggested that Cb was not at steady state by day 3. Upon exploration of numerous models, an empirical 3-compartment model adequately described Cp and Cb, but Cp was somewhat underestimated. Intercompartmental clearance (CL; likely representing cells) was lower than apparent oral CL (18 versus 118 liters/h). Plasma, peripheral, and cell compartmental volumes were 439 liters, 2,980 liters, and 3,084 liters, respectively. Interindividual variability in CL was low (26.2%), while the volume of distribution variability was high (107%). This is the first report to describe AZI Cb in healthy subjects, the distribution parameters between Cp and Cb, and AZI retention in blood for up to 3 weeks following 3 daily doses. The model can be used to predict Cb from Cp for AZI under various dosing regimens. (This study has been registered at ClinicalTrials.gov under registration no. NCT01026064.).
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Greer M, Dierich M, De Wall C, Suhling H, Rademacher J, Welte T, Haverich A, Warnecke G, Ivanyi P, Buchholz S, Gottlieb J, Fuehner T. Phenotyping established chronic lung allograft dysfunction predicts extracorporeal photopheresis response in lung transplant patients. Am J Transplant 2013; 13:911-918. [PMID: 23406373 DOI: 10.1111/ajt.12155] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 10/23/2012] [Accepted: 11/11/2012] [Indexed: 01/25/2023]
Abstract
Chronic lung allograft dysfunction (CLAD) remains the leading cause of mortality in lung transplant recipients after the first year. Treatment remains limited and unpredictable. Existing data suggests extracorporeal photopheresis (ECP) may be beneficial. This study aimed to identify factors predicting treatment response and the prognostic implications. A single center retrospective analysis of all patients commencing ECP for CLAD between November 1, 2007 and September 1, 2011 was performed. In total 65 patients were included, 64 of whom had deteriorated under azithromycin. Median follow-up after commencing ECP was 503 days. Upon commencing ECP, all patients were classified using proposed criteria for emerging clinical phenotypes, including "restrictive allograft syndrome (RAS)", "neutrophilic CLAD (nCLAD)" and "rapid decliners". At follow-up, 8 patients demonstrated ≥10% improvement in FEV1 , 27 patients had stabilized and 30 patients exhibited ≥10% decline in FEV1 . Patients fulfilling criteria for "rapid decliners" (n=21, p=0.005), RAS (n=22, p=0.002) and those not exhibiting neutrophilia in bronchoalveolar lavage (n=44, p=0.01) exhibited poorer outcomes. ECP appears an effective second line treatment in CLAD patients progressing under azithromycin. ECP responders demonstrated improved progression-free survival (median 401 vs. 133 days). Proposed CLAD phenotypes require refinement, but appear to predict the likelihood of ECP response.
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Affiliation(s)
- M Greer
- Department of Respiratory Medicine, Hannover Medical School, Germany
| | - M Dierich
- Department of Respiratory Medicine, Hannover Medical School, Germany
| | - C De Wall
- Department of Respiratory Medicine, Hannover Medical School, Germany
| | - H Suhling
- Department of Respiratory Medicine, Hannover Medical School, Germany
| | - J Rademacher
- Department of Respiratory Medicine, Hannover Medical School, Germany
| | - T Welte
- Department of Respiratory Medicine, Hannover Medical School, Germany
| | - A Haverich
- Department of Cardiothoracic, Transplant and Vascular Surgery, Hannover Medical School, Germany
| | - G Warnecke
- Department of Cardiothoracic, Transplant and Vascular Surgery, Hannover Medical School, Germany
| | - P Ivanyi
- Department of Hematology, Hemostasis, Oncology and StemCell Transplantation, Hannover Medical School, Germany
| | - S Buchholz
- Department of Hematology, Hemostasis, Oncology and StemCell Transplantation, Hannover Medical School, Germany
| | - J Gottlieb
- Department of Respiratory Medicine, Hannover Medical School, Germany
| | - T Fuehner
- Department of Respiratory Medicine, Hannover Medical School, Germany
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Suresh Babu K, Kastelik J, Morjaria JB. Role of long term antibiotics in chronic respiratory diseases. Respir Med 2013; 107:800-15. [PMID: 23522403 DOI: 10.1016/j.rmed.2013.02.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 01/29/2013] [Accepted: 02/11/2013] [Indexed: 10/27/2022]
Abstract
Antibiotics are commonly used in the management of respiratory disorders such as cystic fibrosis (CF), non-CF bronchiectasis, asthma and COPD. In those conditions long-term antibiotics can be delivered as nebulised aerosols or administered orally. In CF, nebulised colomycin or tobramycin improve lung function, reduce number of exacerbations and improve quality of life (QoL). Oral antibiotics, such as macrolides, have acquired wide use not only as anti-microbial agents but also due to their anti-inflammatory and pro-kinetic properties. In CF, macrolides such as azithromycin have been shown to improve the lung function and reduce frequency of infective exacerbations. Similarly macrolides have been shown to have some benefits in COPD including reduction in a number of exacerbations. In asthma, macrolides have been reported to improve some subjective parameters, bronchial hyperresponsiveness and airway inflammation; however have no benefits on lung function or overall asthma control. Macrolides have also been used with beneficial effects in less common disorders such as diffuse panbronchiolitis or post-transplant bronchiolitis obliterans syndrome. In this review we describe our current knowledge the use of long-term antibiotics in conditions such as CF, non-CF bronchiectasis, asthma and COPD together with up-to-date clinical and scientific evidence to support our understanding of the use of antibiotics in those conditions.
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Affiliation(s)
- K Suresh Babu
- Queen Alexandra Hospital, Respiratory Centre, C Level, Southwick Hill Road, Cosham, Portsmouth PO6 3LY, UK.
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84
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The potassium channel KCa3.1 as new therapeutic target for the prevention of obliterative airway disease. Transplantation 2013; 95:285-92. [PMID: 23325003 DOI: 10.1097/tp.0b013e318275a2f4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND The calcium-activated potassium channel KCa3.1 is critically involved in T-cell activation as well as in the proliferation of smooth muscle cells and fibroblasts. We sought to investigate whether KCa3.1 contributes to the pathogenesis of obliterative airway disease (OAD) and whether knockout or pharmacologic blockade would prevent the development of OAD. METHODS Tracheas from CBA donors were heterotopically transplanted into the omentum of C57Bl/6J wild-type or KCa3.1 mice. C57Bl/6J recipients were either left untreated or received the KCa3.1 blocker TRAM-34 (120 mg/kg/day). Histopathology and immunologic assays were performed on postoperative day 5 or 28. RESULTS Subepithelial T-cell and macrophage infiltration on postoperative day 5, as seen in untreated allografts, was significantly reduced in the KCa3.1 and TRAM-34 groups. Also, systemic Th1 activation was significantly and Th2 mildly reduced by KCa3.1 knockout or blockade. After 28 days, luminal obliteration of tracheal allografts was reduced from 89%±21% in untreated recipients to 53%±26% (P=0.010) and 59%±33% (P=0.032) in KCa3.1 and TRAM-34-treated animals, respectively. The airway epithelium was mostly preserved in syngeneic grafts, mostly destroyed in the KCa3.1 and TRAM-34 groups, and absent in untreated allografts. Allografts triggered an antibody response in untreated recipients, which was significantly reduced in KCa3.1 animals. KCa3.1 was detected in T cells, airway epithelial cells, and myofibroblasts. TRAM-34 dose-dependently suppressed proliferation of wild-type C57B/6J splenocytes but did not show any effect on KCa3.1 splenocytes. CONCLUSIONS Our findings suggest that KCa3.1 channels are involved in the pathogenesis of OAD and that KCa3.1 blockade holds promise to reduce OAD development.
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Kennedy VE, Todd JL, Palmer SM. Bronchoalveolar lavage as a tool to predict, diagnose and understand bronchiolitis obliterans syndrome. Am J Transplant 2013; 13:552-61. [PMID: 23356456 PMCID: PMC3582805 DOI: 10.1111/ajt.12091] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 12/03/2012] [Accepted: 12/08/2012] [Indexed: 01/25/2023]
Abstract
Bronchiolitis obliterans syndrome (BOS), a condition of irreversible small airway fibrosis, is the principal factor limiting long-term survival after lung transplantation. Bronchoscopy and bronchoalveolar lavage (BAL), techniques central to lung transplant clinical practice, provide a unique opportunity to interrogate the lung allograft during BOS development and identify potential disease mechanisms or biomarkers. Over the past 20 years, numerous studies have evaluated the BAL cellular composition, cytokine profiles and protein constituents in lung transplant recipients with BOS. To date, however, no summative evaluation of this literature has been reported. We developed and applied objective criteria to qualitatively rank the strength of associations between BAL parameters and BOS in order to provide a comprehensive and systematic assessment of the literature. Our analysis indicates that several BAL parameters, including neutrophil count, interleukin-8, alpha defensins and MMP-9, demonstrate highly replicable associations with BOS. Additionally, we suggest that considerable opportunity exists to increase the knowledge gained from BAL analyses in BOS through increased sample sizes, covariant adjustment and standardization of the BAL technique. Further efforts to leverage analysis of BAL constituents in BOS may offer great potential to provide additional in-depth and mechanistic insights into the pathogenesis of this complex disease.
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Affiliation(s)
- Vanessa E. Kennedy
- Division of Pulmonary, Allergy and Critical Care Medicine- Duke University Medical Center, Durham, NC
| | - Jamie L. Todd
- Division of Pulmonary, Allergy and Critical Care Medicine- Duke University Medical Center, Durham, NC,Duke Clinical Research Institute, Durham, NC
| | - Scott M. Palmer
- Division of Pulmonary, Allergy and Critical Care Medicine- Duke University Medical Center, Durham, NC,Duke Clinical Research Institute, Durham, NC
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Jaksch P, Scheed A, Keplinger M, Ernst MB, Dani T, Just U, Nahavandi H, Klepetko W, Knobler R. A prospective interventional study on the use of extracorporeal photopheresis in patients with bronchiolitis obliterans syndrome after lung transplantation. J Heart Lung Transplant 2013; 31:950-7. [PMID: 22884382 DOI: 10.1016/j.healun.2012.05.002] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Revised: 04/23/2012] [Accepted: 05/15/2012] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND The aim of this prospective study was to evaluate the efficacy and safety of extracorporeal photopheresis (ECP) in patients with bronchiolitis obliterans syndrome (BOS) after lung transplantation and to identify factors predicting treatment response. METHODS The study was performed at a single center and consisted of a cohort of 1,012 lung transplant recipients (November 1989-June 2010). A total of 194 patients developed BOS after a mean of 1,293 ± 1,008 days (range, 99-4,949 days) and received established treatment, and 51 patients received additional ECP. RESULTS Thirty-one (61%) of the ECP-treated patients responded to the therapy and showed sustained stabilization (forced expiratory volume in 1 second range, -5% to 5% vs baseline at start of ECP) of lung function over 6 months. Responders to ECP showed significantly greater survival and less need for retransplantation (p = 0.001) than non-responders. Factors associated with an inferior treatment response were cystic fibrosis as underlying lung disease and a longer time between transplantation and development of BOS. No side effects were observed after ECP. Compared with BOS patients not treated with ECP, the ECP responders showed an improved graft survival (p = 0.05). CONCLUSIONS These results confirm and suggest that early use of ECP could be an effective adjunct treatment for patients who develop BOS after lung transplantation.
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Affiliation(s)
- Peter Jaksch
- Department of Thoracic Surgery, University Hospital Vienna, Vienna, Austria.
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87
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Meyer KC, Glanville AR. Bronchiolitis Obliterans Syndrome and Chronic Lung Allograft Dysfunction: Evolving Concepts and Nomenclature. BRONCHIOLITIS OBLITERANS SYNDROME IN LUNG TRANSPLANTATION 2013. [PMCID: PMC7122385 DOI: 10.1007/978-1-4614-7636-8_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Bronchiolitis obliterans syndrome (BOS) eventually occurs in the majority of lung transplant recipients who survive beyond 1 year, can greatly impair quality of life, and is, directly or indirectly, the major cause of delayed allograft dysfunction and recipient death. A number of associated events or conditions are strongly associated with the risk for developing BOS; these include acute rejection, gastroesophageal reflux, infections, and autoimmune reactions that can occur in the setting of alloimmune responses to the lung allograft as recipients are given intense immunosuppression to prevent allograft rejection. The term chronic lung allograft dysfunction (CLAD) is being increasingly used to refer to recipients with late allograft dysfunction that meets the spirometric criteria for the diagnosis of BOS, but clinicians should recognize that such dysfunction can occur for a variety of reasons other than BOS. The recently identified entity of restrictive allograft syndrome, which is now recognized as a relatively distinct phenotype of CLAD, has features that differentiate it from classic obstructive BOS. A number of other entities that can also significantly affect allograft function must also be considered when significant allograft dysfunction is encountered following lung transplantation.
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88
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Sato M. Chronic lung allograft dysfunction after lung transplantation: the moving target. Gen Thorac Cardiovasc Surg 2012; 61:67-78. [DOI: 10.1007/s11748-012-0167-3] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Indexed: 11/29/2022]
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Neuringer IP, Noone P, Cicale RK, Davis K, Aris RM. Managing complications following lung transplantation. Expert Rev Respir Med 2012; 3:403-23. [PMID: 20477331 DOI: 10.1586/ers.09.27] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Lung transplantation has become a proven therapeutic option for patients with end-stage lung disease, extending life and providing improved quality of life to those who otherwise would continue to be breathless and oxygen-dependent. Over the past 20 years, considerable experience has been gained in understanding the multitude of medical and surgical issues that impact upon patient survival. Today, clinicians have an armamentarium of tools to manage diverse problems such as primary graft dysfunction, acute and chronic allograft rejection, airway anastomotic issues, infectious complications, renal dysfunction, diabetes and osteoporosis, hematological and gastrointestinal problems, malignancy, and other unique issues that confront immunosuppressed solid organ transplant recipients.
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Affiliation(s)
- Isabel P Neuringer
- Division of Pulmonary and Critical Care Medicine and the Cystic Fibrosis/Pulmonary Research and Treatment Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7524, USA.
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Anti-inflammatory and immunomodulatory properties of azithromycin involved in treatment and prevention of chronic lung allograft rejection. Transplantation 2012; 94:101-9. [PMID: 22461039 DOI: 10.1097/tp.0b013e31824db9da] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Chronic lung allograft rejection is the single most important cause of death in lung transplant recipients after the first postoperative year, resulting in a 5-year survival rate of approximately 50%, which is far behind that of other solid organ transplantations. Spirometry is routinely used as a clinical marker for assessing pulmonary allograft function and diagnosing chronic lung allograft rejection after lung transplantation (LTx). As such, a progressive obstructive decline in pulmonary allograft function (forced expiratory volume in 1 sec [FEV1]) in absence of all other causes (currently defined as bronchiolitis obliterans syndrome [BOS]) is considered to reflect the evolution of chronic lung allograft rejection. BOS has a 5-year prevalence of approximately 45% and is thought to be the final common endpoint of various alloimmunologic and nonalloimmunologic injuries to the pulmonary allograft, triggering different innate and adaptive immune responses. Most preventive and therapeutic strategies for this complex process have thus far been largely unsuccessful. However, the introduction of the neomacrolide antibiotic azithromycin (AZI) in the field of LTx as of 2003 made it clear that some patients with established BOS might in fact benefit from such therapy due to its various antiinflammatory and immunomodulatory properties, as summarized in this review. Particularly in patients with an increased bronchoalveolar lavage neutrophilia (i.e., 15%-20% or more), AZI treatment could result in an increase in FEV1 of at least 10%. More recently, it has become clear that prophylactic therapy with AZI actually may prevent BOS and improve FEV1 after LTx, most likely through its interactions with the innate immune system. However, one should always be aware of possible adverse effects related to AZI when implementing this drug as prophylactic or long-term treatment. Even so, AZI therapy after LTx can generally be considered as safe.
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Steel HC, Theron AJ, Cockeran R, Anderson R, Feldman C. Pathogen- and host-directed anti-inflammatory activities of macrolide antibiotics. Mediators Inflamm 2012; 2012:584262. [PMID: 22778497 PMCID: PMC3388425 DOI: 10.1155/2012/584262] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Accepted: 03/02/2012] [Indexed: 12/27/2022] Open
Abstract
Macrolide antibiotics possess several, beneficial, secondary properties which complement their primary antimicrobial activity. In addition to high levels of tissue penetration, which may counteract seemingly macrolide-resistant bacterial pathogens, these agents also possess anti-inflammatory properties, unrelated to their primary antimicrobial activity. Macrolides target cells of both the innate and adaptive immune systems, as well as structural cells, and are beneficial in controlling harmful inflammatory responses during acute and chronic bacterial infection. These secondary anti-inflammatory activities of macrolides appear to be particularly effective in attenuating neutrophil-mediated inflammation. This, in turn, may contribute to the usefulness of these agents in the treatment of acute and chronic inflammatory disorders of both microbial and nonmicrobial origin, predominantly of the airways. This paper is focused on the various mechanisms of macrolide-mediated anti-inflammatory activity which target both microbial pathogens and the cells of the innate and adaptive immune systems, with emphasis on their clinical relevance.
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Affiliation(s)
- Helen C Steel
- Medical Research Council Unit for Inflammation and Immunity, Department of Immunology, Faculty of Health Sciences, University of Pretoria and Tshwane Academic Division of the National Health Laboratory Service, P.O. Box 2034, Pretoria 0001, South Africa.
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Asadi L, Sligl WI, Eurich DT, Colmers IN, Tjosvold L, Marrie TJ, Majumdar SR. Macrolide-Based Regimens and Mortality in Hospitalized Patients With Community-Acquired Pneumonia: A Systematic Review and Meta-analysis. Clin Infect Dis 2012; 55:371-80. [DOI: 10.1093/cid/cis414] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sengsayadeth SM, Srivastava S, Jagasia M, Savani BN. Time to explore preventive and novel therapies for bronchiolitis obliterans syndrome after allogeneic hematopoietic stem cell transplantation. Biol Blood Marrow Transplant 2012; 18:1479-87. [PMID: 22449611 DOI: 10.1016/j.bbmt.2012.03.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2012] [Accepted: 03/19/2012] [Indexed: 12/21/2022]
Abstract
Although allogeneic hematopoietic stem cell transplant (allo-HSCT) is performed to treat otherwise incurable and fatal diseases, transplantation itself can lead to life-threatening complications due to organ damage. Pulmonary complications remain a significant barrier to the success of allo-HSCT. Lung injury, a frequent complication after allo-HSCT, and noninfectious pulmonary deaths account for a significant proportion of non-relapse mortality. Bronchiolitis obliterans syndrome (BOS) is a common and potentially devastating complication. BOS is now considered a diagnostic criterion of chronic graft-versus-host-disease (cGVHD), and National Institutes of Health (NIH) consensus has been published to establish guidelines for diagnosis and monitoring of BOS. It usually occurs within the first 2 years but may develop as late as 5 years after transplantation. Recent prevalence estimates suggest that BOS is likely underdiagnosed, and when severe BOS does occur, current treatments have been largely ineffective. Prevention and effective novel approaches remain the primary tools in the clinician's arsenal in managing BOS. This article provides an overview of the currently available and novel strategies for BOS, and we also discuss specific preventive interventions to reduce severe BOS after allo-HSCT. Therapeutic trials continue to be needed for this orphan disease.
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Affiliation(s)
- Salyka M Sengsayadeth
- Section of Hematology and Stem Cell Transplantation, Division of Hematology/Oncology, Department of Medicine, Vanderbilt-Ingram Cancer Center, Nashville, TN 37232, USA
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Roman A, Ussetti P, Zurbano F, Borro JM, Solé A, Carreño MC, Santos F. A retrospective 12-month study of conversion to everolimus in lung transplant recipients. Transplant Proc 2012; 43:2693-8. [PMID: 21911148 DOI: 10.1016/j.transproceed.2011.06.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 05/16/2011] [Accepted: 06/06/2011] [Indexed: 12/22/2022]
Abstract
BACKGROUND Everolimus has potent antifibrotic effects that may potentially affect the clinical course of bronchiolitis obliterans syndrome (BOS) or provide nephroprotective immunosuppressive regimens for lung transplantation. METHODS We retrospectively assessed the 12-month outcomes of the conversion to everolimus among lung recipients in six Spanish centers. RESULTS From March 2005 to December 2007, 65 lung recipients who were at a mean posttransplantation time of 10.2 ± 7.9 months were converted to everolimus, mainly because of BOS (64.6%) or renal insufficiency (RI; 12.3%). The initial dose of everolimus was 1.9 ± 0.6 mg/d and the mean blood trough levels were stable over time (6.4 ± 2.8 ng/mL at 12 months). Conversion to everolimus allowed us to eliminate the calcineurin inhibitor (CNI) in 21% of patients. Among the overall population, the forced expiratory volume at 1 second (FEV(1)) and renal function remained stable. Mean FEV(1) did not change among the 35 (81%) patients surviving BOS at 12 months: preconversion FEV(1): 1.449.5 ± 641.9 mL vs 12-month FEV(1): 1420.0 ± 734.6 mL (P = .866). There was a significant improvement in renal function among the RI patients with mean glomerular filtration rates of 42.2 ± 15.2 mL/min/1.73 m(2) (P = .043) at 6 and 44.4 ± 18.8 mL/min/1.73 m(2) at 12 months, (P = .063) and a decrease in the use of CNIs from 1% of RI patients preconversion to 57% at 6 and 75% at 12 months. With a mean of 8.1- months follow-up (range: 1-31.3) overall survival was 84.6% at 1 year and 50% at 22.3 months. Progressive BOS was the main cause of death. Reasons for everolimus discontinuation were patient death (n = 10), lack of efficacy (n = 4), gastrointestinal adverse events (n = 2), and edema (n = 2). CONCLUSIONS BOS and RI were the main indications for conversion to everolimus among lung recipients. Conversion to everolimus improved renal function among patients converted because of RI. The present results were inconclusive regarding effects of everolimus on BOS.
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Affiliation(s)
- A Roman
- Department of Pulmonology, University Hospital Vall d'Hebron, Barcelona, Spain.
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96
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Abstract
PURPOSE OF REVIEW This review summarizes recently published investigations on issues pertaining to cystic fibrosis (CF) lung transplantation. We specifically focus on indications and candidate selection as well as infectious and noninfectious issues specific to CF lung transplant recipients. RECENT FINDINGS Recent studies have focused on candidate adequacy in high-risk CF patients. We review the current literature on individuals who develop respiratory failure requiring mechanical ventilation and those patients with a pretransplant diagnosis of pulmonary hypertension. Furthermore, the management of peri-operative infectious issues is reviewed including recurrent infections with multidrug-resistant bacterial, mycobacterial, and fungal organisms. Other CF-specific issues addressed include common comorbidities such as CF-related diabetes, gastroesophageal reflux, CF liver disease, and bone metabolism. SUMMARY Lung transplantation is a limited, but potentially life-saving therapeutic option for patients with CF. Optimal candidate selection and awareness of CF-specific issues in the pretransplant and posttransplant setting may lead to better long-term outcomes.
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Abstract
BACKGROUND Chronic lung allograft dysfunction (CLAD) remains the leading cause of mortality after lung transplantation. METHODS In this retrospective single-center study, we aimed to identify different phenotypes of and risk factors for mortality after CLAD diagnosis using univariate and multivariate Cox proportional hazard survival regression analysis. RESULTS CLAD was diagnosed in 71 of 294 patients (24.2%) at 30.9±22.8 months after transplantation. Pulmonary function was obstructive in 51 (71.8%) of the CLAD patients, restrictive in 20 (28.2%) patients, of whom 17 had persistent parenchymal infiltrates on pulmonary computer tomography (CAT) scan. In univariate analysis, previous development of neutrophilic reversible allograft dysfunction (NRAD, P=0.012) and a restrictive pulmonary function (P=0.0024) were associated with a worse survival, whereas there was a strong trend for early development of CLAD and persistent parenchymal infiltrates on CAT scan (P=0.067 and 0.056, respectively). In multivariate analysis, early development of CLAD (P=0.0067), previous development of NRAD (P=0.0016), and a restrictive pulmonary function pattern (P=0.0005) or persistent parenchymal infiltrates on CAT scan (P=0.0043) remained significant. CONCLUSION Although most CLAD patients develop an obstructive pulmonary function, 28% develop a restrictive pulmonary function, compatible with the recently defined restrictive allograft syndrome phenotype. Early-onset CLAD, previous development of NRAD, and the development of restrictive allograft syndrome are associated with worse survival after CLAD has been diagnosed.
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Zarogoulidis P, Papanas N, Kioumis I, Chatzaki E, Maltezos E, Zarogoulidis K. Macrolides: from in vitro anti-inflammatory and immunomodulatory properties to clinical practice in respiratory diseases. Eur J Clin Pharmacol 2011; 68:479-503. [PMID: 22105373 DOI: 10.1007/s00228-011-1161-x] [Citation(s) in RCA: 187] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 10/25/2011] [Indexed: 12/12/2022]
Abstract
BACKGROUND Macrolides have long been recognised to exert immunomodulary and anti-inflammatory actions. They are able to suppress the "cytokine storm" of inflammation and to confer an additional clinical benefit through their immunomodulatory properties. METHODS A search of electronic journal articles was performed using combinations of the following keywords: macrolides, COPD, asthma, bronchitis, bronchiolitis obliterans, cystic fibrosis, immunomodulation, anti-inflammatory effect, diabetes, side effects and systemic diseases. RESULTS Macrolide effects are time- and dose-dependent, and the mechanisms underlying these effects remain incompletely understood. Both in vitro and in vivo studies have provided ample evidence of their immunomodulary and anti-inflammatory actions. Importantly, this class of antibiotics is efficacious with respect to controlling exacerbations of underlying respiratory problems, such as cystic fibrosis, asthma, bronchiectasis, panbrochiolitis and cryptogenic organising pneumonia. Macrolides have also been reported to reduce airway hyper-responsiveness and improve pulmonary function. CONCLUSION This review provides an overview on the properties of macrolides (erythromycin, clarithromycin, roxithromycin, azithromycin), their efficacy in various respiratory diseases and their adverse effects.
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Affiliation(s)
- P Zarogoulidis
- Pulmonary Department, G. Papanikolaou Hospital, Aristotle University of Thessaloniki, Thessaloniki 57010, Greece.
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Hildebrandt GC, Fazekas T, Lawitschka A, Bertz H, Greinix H, Halter J, Pavletic SZ, Holler E, Wolff D. Diagnosis and treatment of pulmonary chronic GVHD: report from the consensus conference on clinical practice in chronic GVHD. Bone Marrow Transplant 2011; 46:1283-95. [PMID: 21441964 PMCID: PMC7094778 DOI: 10.1038/bmt.2011.35] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2010] [Revised: 11/12/2010] [Accepted: 11/16/2010] [Indexed: 01/03/2023]
Abstract
This consensus statement established under the auspices of the German working group on BM and blood stem cell transplantation (DAG-KBT), the German Society of Hematology and Oncology (DGHO), the Austrian Stem Cell Transplant Working Group, the Swiss Blood Stem Cell Transplantation Group (SBST) and the German-Austrian Pediatric Working Group on SCT (Päd-Ag-KBT) summarizes current evidence for diagnosis, immunosuppressive and supportive therapy to provide practical guidelines for the care and treatment of patients with pulmonary manifestations of chronic GVHD (cGVHD). Pulmonary cGVHD can present with obstructive and/or restrictive changes. Disease severity ranges from subclinical pulmonary function test (PFT) impairment to respiratory insufficiency with bronchiolitis obliterans being the only pulmonary complication currently considered diagnostic of cGVHD. Early diagnosis may improve clinical outcome, and regular post-transplant follow-up PFTs are recommended. Diagnostic work-up includes high-resolution computed tomography, bronchoalveolar lavage and histology. Topical treatment is based on inhalative steroids plus beta-agonists. Early addition of azithromycin is suggested. Systemic first-line treatment consists of corticosteroids plus, if any, continuation of other immunosuppressive therapy. Second-line therapy and beyond includes extracorporeal photopheresis, mammalian target of rapamycin inhibitors, mycophenolate, etanercept, imatinib and TLI, but efficacy is limited. Clinical trials are urgently needed to improve understanding and treatment of this deleterious complication.
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Affiliation(s)
- G C Hildebrandt
- Department of Hematology and Oncology, University of Regensburg Medical Center, Regensburg, Germany.
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100
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Uhlving HH, Buchvald F, Heilmann CJ, Nielsen KG, Gormsen M, Müller KG. Bronchiolitis obliterans after allo-SCT: clinical criteria and treatment options. Bone Marrow Transplant 2011; 47:1020-9. [PMID: 21874057 DOI: 10.1038/bmt.2011.161] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Bronchiolitis obliterans (BO) following allogeneic haematopoietic SCT (HSCT) is a serious complication affecting 1.7-26% of the patients, with a reported mortality rate of 21-100%. It is considered a manifestation of chronic graft-versus-host disease, but our knowledge of aetiology and pathogenesis is still limited. Diagnostic criteria are being developed, and will allow more uniform and comparable research activities between centres. At present, no randomised controlled trials have been completed that could demonstrate an effective treatment. Steroids in combination with other immunosuppressive drugs still constitute the backbone of the treatment strategy, and results from our and other centres suggest that monthly infusions of high-dose pulse i.v. methylprednisolone (HDPM) might stabilise the disease and hinder progression. This article provides an overview of the current evidence regarding treatment options for BO and presents the treatment results with HDPM in a paediatric national HSCT-cohort.
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Affiliation(s)
- H H Uhlving
- Paediatric Clinic, National University Hospital Rigshospitalet, Blegdamsvej 9, Copenhagen, Denmark.
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