Please use this identifier to cite or link to this item: http://docs.prosentient.com.au/prosentientjspui/handle/1/11171
Title: Higher human T-lymphotropic virus type 1 subtype C proviral loads are associated with bronchiectasis in indigenous australians: results of a case-control study.
Authors: Einsiedel, Lloyd
Cassar, Olivier
Goeman, Emma
Spelman, Tim
Au, Virginia
Hatami, Saba
Joseph, Sheela
Gessain, Antoine
Affiliation: Northern Territory Rural Clinical School/Flinders University , Northern Territory of Australia , Australia ; SA Pathology, Adelaide , South Australia , Australia..
Institut Pasteur, Unité EPVO, Département de Virologie , F-75015 Paris , France ; CNRS, UMR 3569 , F-75015 Paris , France..
Department of Paediatrics , Alice Springs Hospital, Northern Territory of Australia , Australia..
Northern Territory Rural Clinical School/Flinders University , Northern Territory of Australia , Australia..
Department of Radiology , Flinders Medical Centre , Adelaide, South Australia , Australia..
Department of Radiology , Flinders Medical Centre , Adelaide, South Australia , Australia..
Northern Territory Rural Clinical School/Flinders University , Northern Territory of Australia , Australia..
Institut Pasteur, Unité EPVO, Département de Virologie , F-75015 Paris , France ; CNRS, UMR 3569 , F-75015 Paris , France..
Issue Date: Mar-2014
Citation: Open forum infectious diseases 2014-03; 1(1): ofu023
Abstract: We previously suggested that infection with the human T-lymphotropic virus type 1 (HTLV-1) subtype C is associated with bronchiectasis among Indigenous Australians. Bronchiectasis might therefore result from an HTLV-1-mediated inflammatory process that is typically associated with a high HTLV-1 proviral load (PVL). Human T-lymphotropic virus type 1 PVL have not been reported for Indigenous Australians. Thirty-six Indigenous adults admitted with bronchiectasis from June 1, 2008, to December 31, 2009 were prospectively recruited and matched by age, sex, and ethno-geographic origin to 36 controls. Case notes and chest high-resolution computed tomographs were reviewed, and pulmonary injury scores were calculated. A PVL assay for the HTLV-1c subtype that infects Indigenous Australians was developed and applied to this study. Clinical, radiological, and virological parameters were compared between groups and according to HTLV-1 serostatus. Human T-lymphotropic virus type 1 infection was the main predictor of bronchiectasis in a multivariable model (adjusted risk ratio [aRR], 1.84; 95% confidence interval [CI], 1.19-2.84; P = .006). Moreover, the median HTLV-1c PVL (interquartile range) for cases was >100-fold that of controls (cases, 0.319 [0.007, 0.749]; controls, 0.003 [0.000, 0.051] per 100 peripheral blood lymphocytes; P = .007), and HTLV-1c PVL were closely correlated with radiologically determined pulmonary injury scores (Spearman's rho = 0.7457; P = .0000). Other predictors of bronchiectasis were positive Strongyloides serology (aRR, 1.69; 95% CI, 1.13-2.53) and childhood skin infections (aRR, 1.62; 95% CI, 1.07-2.44). Bronchiectasis was the major predictor of death (aRR, 2.71; 95% CI, 1.36-5.39; P = .004). These data strongly support an etiological association between HTLV-1 infection and bronchiectasis in a socially disadvantaged population at risk of recurrent lower respiratory tract infections.
URI: http://docs.prosentient.com.au/prosentientjspui/handle/1/11171
DOI: 10.1093/ofid/ofu023
ISSN: 2328-8957
Type: Journal Article
Subjects: Australia
HTLV-1
HTLV-1 proviral load
Indigenous
Strongyloides stercoralis
bronchiectasis
pulmonary disease
Appears in Collections:NT Health digital library

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.