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chronic allograft dysfunction

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https://www.readbyqxmd.com/read/28729000/airway-microbiota-signals-anabolic-and-catabolic-remodeling-in-the-transplanted-lung
#1
Stéphane Mouraux, Eric Bernasconi, Céline Pattaroni, Angela Koutsokera, John-David Aubert, Johanna Claustre, Christophe Pison, Pierre-Joseph Royer, Antoine Magnan, Romain Kessler, Christian Benden, Paola M Soccal, Benjamin J Marsland, Laurent P Nicod
BACKGROUND: Homeostatic turnover of the extracellular matrix conditions the structure and function of the healthy lung. In lung transplantation, long-term management remains limited by Chronic Lung Allograft Dysfunction (CLAD), an umbrella term used for a heterogeneous entity ultimately associated with pathological airway and/or parenchyma remodeling. OBJECTIVE: To assess whether the local cross-talk between the pulmonary microbiota and host cells is a key determinant in the control of lower airway remodeling post-transplantation...
July 17, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28720212/changing-the-curve-in-chronic-lung-allograft-dysfunction-implications-of-chronic-lung-allograft-dysfunction-phenotypes-in-assessing-treatment-interventions
#2
EDITORIAL
Joshua J Mooney
No abstract text is available yet for this article.
May 29, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28720146/analysis-of-long-term-cd4-cd25highcd127-t-reg-cells-kinetics-in-peripheral-blood-of-lung-transplant-recipients
#3
Davide Piloni, Monica Morosini, Sara Magni, Alice Balderacchi, Luigia Scudeller, Emanuela Cova, Tiberio Oggionni, Giulia Stella, Carmine Tinelli, Filippo Antonacci, Andrea Maria D'Armini, Federica Meloni
BACKGROUND: The role of CD4(+)CD25(high)CD127(-) T-reg cells in solid-organ Transplant (Tx) acceptance has been extensively studied. In previous studies on kidney and liver recipients, peripheral T-reg cell counts were associated to graft survival, while in lung Tx, there is limited evidence for similar findings. This study aims to analyze long term peripheral kinetics of T-reg-cells in a cohort of lung recipients and tests its association to several clinical variables. METHODS: From jan 2009 to dec 2014, 137 lung Tx recipients were submitted to an immunological follow up (median: 105...
July 18, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28709599/recurrence-of-glomerulonephritis-an-underestimated-and-unmet-medical-need
#4
Johan W de Fijter
Recurrent glomerulonephritis is increasingly recognized as an important contributor to premature renal allograft failure. The incidence of recurrent glomerulonephritis varies widely depending on original disease, renal biopsy policy, and time of observation. Biopsy-documented clinical recurrence rates underestimate the true prevalence. The impact of recurrent glomerulonephritis on graft survival parameters also widely varies and requires large collaborative efforts with more detailed and balanced evaluations, such as other major causes for chronic renal allograft dysfunction...
August 2017: Kidney International
https://www.readbyqxmd.com/read/28698834/biomarkers-in-renal-transplantation-an-updated-review
#5
REVIEW
Maurizio Salvadori, Aris Tsalouchos
Genomics, proteomics and molecular biology lead to tremendous advances in all fields of medical sciences. Among these the finding of biomarkers as non invasive indicators of biologic processes represents a useful tool in the field of transplantation. In addition to define the principal characteristics of the biomarkers, this review will examine the biomarker usefulness in the different clinical phases following renal transplantation. Biomarkers of ischemia-reperfusion injury and of delayed graft function are extremely important for an early diagnosis of these complications and for optimizing the treatment...
June 24, 2017: World Journal of Transplantation
https://www.readbyqxmd.com/read/28691954/maintenance-belatacept-based-immunosuppression-in-lung-transplantation-recipients-who-failed-calcineurin-inhibitors
#6
Carlo J Iasella, Ryan J Winstead, Cody A Moore, Bruce A Johnson, Ayelet T Feinberg, Matthew R Morrell, J W Awori Hayanga, Elizabeth A Lendermon, Adriana Zeevi, John F McDyer, Christopher R Ensor
BACKGROUND: Traditional immunosuppressive regimens (ISR) used in lung transplantation rely on calcineurin inhibitors (CNI) that occasionally cause severe adverse reactions necessitating discontinuation. Belatacept is a novel costimulation antagonist approved for use in renal transplantation which lacks data in lung transplantation. This series aims to describe the response to belatacept ISR in 11 lung transplantation recipients after CNI failure. METHODS: Single center, retrospective medical record review of adult lung transplant recipients (LTR) before and after conversion to belatacept-based ISR...
July 6, 2017: Transplantation
https://www.readbyqxmd.com/read/28686641/the-prognostic-importance-of-cxcr3-chemokine-during-organizing-pneumonia-on-the-risk-of-chronic-lung-allograft-dysfunction-after-lung-transplantation
#7
Michael Y Shino, S Samuel Weigt, Ning Li, Vyacheslav Palchevskiy, Ariss Derhovanessian, Rajan Saggar, David M Sayah, Richard H Huynh, Aric L Gregson, Michael C Fishbein, Abbas Ardehali, David J Ross, Joseph P Lynch, Robert M Elashoff, John A Belperio
RATIONALE: Since the pathogenesis of chronic lung allograft dysfunction (CLAD) remains poorly defined with no known effective therapies, the identification and study of key events which increase CLAD risk is a critical step towards improving outcomes. We hypothesized that bronchoalveolar lavage fluid (BALF) CXCR3 ligand concentrations would be augmented during organizing pneumonia (OP) and that episodes of OP with marked chemokine elevations would be associated with significantly higher CLAD risk...
2017: PloS One
https://www.readbyqxmd.com/read/28665959/increased-migration-of-antigen-presenting-cells-to-newly-formed-lymphatic-vessels-in-transplanted-kidneys-by-glycol-split-heparin
#8
Ditmer T Talsma, Kirankumar Katta, Miriam Boersema, Saritha Adepu, Annamaria Naggi, Giangiacomo Torri, Coen Stegeman, Gerjan Navis, Harry van Goor, Jan-Luuk Hillebrands, Saleh Yazdani, Jacob van den Born
BACKGROUND: Chronic renal transplant dysfunction is characterized by loss of renal function and tissue remodeling, including chronic inflammation and lymph vessel formation. Proteoglycans are known for their chemokine presenting capacity. We hypothesize that interruption of the lymphatic chemokine-proteoglycan interaction interferes with the lymphatic outflow of leukocytes from the renal graft and might decrease the anti-graft allo-immune response. METHODS: In a rat renal chronic transplant dysfunction model (female Dark-Agouti to male Wistar Furth), chemokines were profiled by qRT-PCR in microdissected tubulo-interstitial tissue...
2017: PloS One
https://www.readbyqxmd.com/read/28662986/therapy-options-for-chronic-lung-allograft-dysfunction-bronchiolitis-obliterans-syndrome-following-first-line-immunosuppressive-strategies-a-systematic-review
#9
Christian Benden, Maria Haughton, Saoirse Leonard, Lars C Huber
BACKGROUND: Long-term success of lung transplantation is limited by the development of chronic lung allograft dysfunction (CLAD), of which bronchiolitis obliterans syndrome (BOS) is the most common form. This systematic review sought to identify the current evidence base for CLAD-BOS therapies after initial immunosuppressive treatment strategies. METHODS: The MEDLINE, Embase, and Cochrane Library databases from inception to May 3, 2016, were searched using keywords relating to CLAD-BOS, study designs, and treatments of interest, including extracorporeal photopheresis (ECP), aerosolized cyclosporine, total lymphoid irradiation (TLI), alemtuzumab, and montelukast...
May 29, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28662022/impaired-esophageal-motility-and-clearance-post-lung-transplant-risk-for-chronic-allograft-failure
#10
Anupong Tangaroonsanti, Augustine S Lee, Michael D Crowell, Marcelo F Vela, Daryl R Jones, David Erasmus, Cesar Keller, Jorge Mallea, Francisco Alvarez, Cristina Almansa, Kenneth R DeVault, Lesley A Houghton
OBJECTIVES: Gastroesophageal reflux is common in patients post-lung transplantation (LTx) and thus considered a risk factor for aspiration and consequently allograft rejection and the development of chronic allograft failure. However, evidence supporting this remains unclear and often contradictory. Our aim was to examine the role played by esophageal motility on gastroesophageal reflux exposure, along with its clearance and that of boluses swallowed, and the relationship to development of obstructive chronic lung allograft dysfunction (o-CLAD)...
June 29, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28658530/the-role-of-biomechanical-anatomical-modeling-via-computed-tomography-for-identification-of-restrictive-allograft-syndrome
#11
Miho Horie, Tomohito Saito, Joanne Moseley, Luigia D'Errico, Pascal Salazar, Daisuke Nakajima, Kristy Brock, Kazuhiro Yasufuku, Matthew Binnie, Shaf Keshavjee, Narinder Paul
Chronic lung allograft dysfunction (CLAD) reduces long term graft survival. It is important to distinguish CLAD subtypes: bronchiolitis obliterans syndrome (BOS) and restrictive allograft syndrome (RAS) as RAS has a worse prognosis and accurate subtyping could facilitate targeted treatments. However, the current diagnosis of CLAD subtypes is based on pulmonary function test results that reflect global estimates of lung function; anatomical modeling based on computed tomography (CT) has the potential to provide detailed analysis of global and regional lung function...
June 28, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28653398/lung-transplant-recipients-on-long-term-extracorporeal-photopheresis
#12
Bruno Isenring, Cécile Robinson, Urs Buergi, Macé M Schuurmans, Malcolm Kohler, Lars C Huber, Christian Benden
Extracorporeal photophoresis (ECP) is an increasingly used therapy to address chronic lung allograft dysfunction (CLAD) following lung transplantation. In 2008, we reported the first single-center experience showing that ECP not only reduces lung function decline in patients with bronchiolitis obliterans syndrome (BOS) but results in stabilization of patients with recurrent acute cellular rejection (ACR). In the current study, the original cohort was followed up further 5 years. In addition, patients with CLAD were retrospectively classified according to recently published phenotypes...
June 27, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28651906/lung-clearance-index-is-sensitive-to-small-airway-disease-in-pediatric-lung-transplant-recipients
#13
Julia E Kao, Jacquelyn M Zirbes, Carol K Conrad, Carlos E Milla
BACKGROUND: The principal obstacle to long-term survival after lung transplant is chronic lung allograft dysfunction (CLAD), which primarily affects the small airways. After transplant, patients are monitored with spirometry, which is a generally insensitive detector of small airways obstruction. The lung clearance index (LCI) is a measure obtained during multiple breath washout (MBW) maneuvers. We hypothesized that among lung allograft recipients, LCI would detect small airways disease not detected with spirometry...
May 10, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28647206/ct-at-onset-of-chronic-lung-allograft-dysfunction-in-lung-transplant-patients-predicts-development-of-the-restrictive-phenotype-and-survival
#14
Sabine Dettmer, Hoen-Oh Shin, Jens Vogel-Claussen, Max Westphal, Axel Haverich, Gregor Warnecke, Tobias Welte, Frank Wacker, Jens Gottlieb, Hendrik Suhling
PURPOSE: To describe early signs for restrictive subtype of chronic lung allograft dysfunction (CLAD) after lung transplantation in computed tomography (CT) and to evaluate the predictive value for disease progression and survival. MATERIAL AND METHODS: 52 CT examinations in lung transplant patients at CLAD onset were scored for CT features referring to airways disease, parenchymal or pleural abnormality. Patients with and without later development of restrictive CLAD (TLC≤80%) were compared...
June 15, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28637080/the-prognostic-importance-of-bronchoalveolar-lavage-fluid-cxcl9-during-minimal-acute-rejection-on-the-risk-of-chronic-lung-allograft-dysfunction
#15
M Y Shino, S S Weigt, N Li, A Derhovanessian, D M Sayah, R Saggar, Richard H Huynh, A L Gregson, A Ardehali, D J Ross, J P Lynch, R M Elashoff, J A Belperio
The clinical significance and treatment strategies for minimal acute rejection (grade A1), the most common form of acute rejection (AR), remains controversial. In this retrospective single-center cohort study of 441 lung transplant recipients, we formally evaluate the association between minimal AR and chronic lung allograft dysfunction (CLAD) and test a novel hypothesis using BAL CXCL9 concentration during minimal AR as a biomarker of subsequent CLAD development. In univariable and multivariable models adjusted for all histopathologic injury patterns, minimal AR was not associated with CLAD development...
June 21, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28620643/activin-biology-after-lung-transplantation
#16
Glen P Westall, Gregory I Snell, Monika Loskot, Bronwyn Levvey, Robyn O'Hehir, Mark P Hedger, David M de Kretser
BACKGROUND: Activins A and B, members of the TGF-β superfamily, are produced as part of the physiological response to tissue damage and the resulting proinflammatory response. Given that lung allograft reperfusion results in an inflammatory response, it is likely that the activins and their binding protein follistatin will form part of the regulatory response. There is a need to document the response of these proteins to allograft reperfusion to determine if there is a role for the use of follistatin to control the biological actions of the activins because some of these are potentially damaging...
June 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28583516/metabolomics-study-for-identification-of-potential-biomarkers-of-long-term-survival-in-kidney-transplantation-recipients
#17
S-K Lee, B K Kim, H-Y Jung, J-H Cho, S-H Park, Y-L Kim, S-Y Kim, Y-R Yoon, B H Chung, S-H Lee, C-D Kim
BACKGROUND: The recent progress and appropriate use of immunosuppressive drugs have considerably improved the short-term survival in kidney transplantation recipients (KTRs). The development of new strategies to improve long-term survival outcome after kidney transplantation is also becoming important. Although current diagnosis of allograft dysfunction relies on serum creatinine concentration and biopsy, they are nonspecific indicators of allograft function. Therefore, noninvasive, sensitive, and specific biomarkers for the prediction of long-term survival are needed...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28577875/circulating-mir-150-mir-192-mir-200b-and-mir-423-3p-as-non-invasive-biomarkers-of-chronic-allograft-dysfunction
#18
Sepideh Zununi Vahed, Ahmad Poursadegh Zonouzi, Fariba Mahmoodpoor, Nasser Samadi, Mohammadreza Ardalan, Yadollah Omidi
BACKGROUND AND AIMS: Chronic allograft dysfunction (CAD) is the major cause of renal allograft loss and can only be diagnosed by invasive histological examinations. The current study aimed to determine whether or not the circulating miR-125a, miR-150, miR-192, miR-200b, miR-423-3p and miR-433 could serve as predictors of graft outcome in the renal transplant recipients with CAD. METHODS: To evaluate the expression levels of miRNAs, we used quantitative real-time PCR (qPCR) and analyzed the plasma samples of 53 renal transplant recipients, including: 27 recipients with stable graft function (SGF), 26 recipients with biopsy-proven interstitial fibrosis and tubular atrophy (IFTA) and 15 healthy controls...
January 2017: Archives of Medical Research
https://www.readbyqxmd.com/read/28573901/a-case-report-of-parvovirus-b19-infection-in-a-renal-allograft
#19
Diana M Oramas, Suman Setty, Vijay Yeldandi, Julio Cabrera, Tushar Patel
Parvovirus B19 infection is undiagnosed in recipients undergoing solid organ transplantation. It is usually responsible for unexplained acute and chronic red blood cell aplasia that does not respond to erythropoietin therapy. Cases of parvovirus B19 infection associated with pancytopenia, solid organ dysfunction, and allograft rejection have been described in the literature. The deterioration of the immune system as a result of severe immunotherapy favors the reactivation of a previous infection or the acquisition of a new one...
June 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28571148/de-novo-focal-segmental-glomerulosclerosis-in-renal-allograft-histological-presentation-and-clinical-correlation-single-centre-experience
#20
Rashmi D Patel, Aruna V Vanikar, Lovelesh A Nigam, Kamal V Kanodia, Kamlesh S Suthar, Himanshu V Patel
INTRODUCTION: Recurrent or de novo glomerulonephritis are one of the well-known causes for renal allograft dysfunction in early and late period after renal transplantation. Focal Segmental Glomerulosclerosis (FSGS) is a devastating lesion of the renal allograft. De novo FSGS is uncommon compared to recurrent FSGS. AIM: To find out the incidence of de novo FSGS. MATERIALS AND METHODS: A retrospective evaluation of renal allograft biopsies was performed from 2007 to 2015, by light microscopy and immunohistochemistry including patient-donor demographics...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
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