Publications by authors named "Daniel Chambers"

Adoptive T-cell immunotherapy holds great promise for the treatment of viral complications in immunocompromised patients resistant to standard anti-viral strategies. We present a retrospective analysis of 78 patients from 19 hospitals across Australia and New Zealand, treated over the last 15 years with "off-the-shelf" allogeneic T cells directed to a combination of Epstein-Barr virus (EBV), cytomegalovirus (CMV), BK polyomavirus (BKV), John Cunningham virus (JCV) and/or adenovirus (AdV) under the Australian Therapeutic Goods Administration's Special Access Scheme. Most patients had severe post-transplant viral complications, including drug-resistant end-organ CMV disease, BKV-associated haemorrhagic cystitis and EBV-driven post-transplant lymphoproliferative disorder.

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Article Synopsis
  • Keratinocyte carcinomas, like basal and squamous cell carcinomas, are common and serious issues for solid organ transplant recipients, necessitating early detection and effective treatment strategies.
  • A Phase III clinical trial, called the SiroSkin trial, will assess the effectiveness of topical sirolimus in reducing skin cancer incidence among these patients compared to a placebo, involving 146 participants over 24 weeks of treatment and 18 months of follow-up.
  • The trial's results aim to enhance management approaches for skin cancers in solid organ transplant recipients and gather evidence on the cost-effectiveness of using topical sirolimus.
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Background: Lung function testing remains a cornerstone in the assessment and management of interstitial lung disease (ILD) patients. The clinical implications of the Global Lung function Initiative (GLI) reference equations and the updated interpretation strategies remain uncertain.

Methods: Adult patients with ILD with baseline forced vital capacity (FVC) were included from the Australasian ILD registry and the National Healthcare Group ILD registry, Singapore.

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Introduction: The complex encompasses a group of gram-negative opportunistic pathogens that cause chronic lung infections in people with cystic fibrosis. Distinct from other respiratory pathogens, causes a unique clinical disease in a subset of patients known as 'cepacia syndrome', fulminant pneumonia accompanied by bacteraemia and sepsis with a mortality rate of up to 75%. Due to the bacteraemia associated with this disease, the mechanisms that allow to resist the bactericidal effects of serum complement-depending killing are vital.

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Lung transplant recipients frequently encounter immune-related complications, including chronic lung allograft dysfunction (CLAD). Monitoring immune cells within the lung microenvironment is pivotal for optimizing post-transplant outcomes. This study examined the proportion of T cell subsets in paired bronchoalveolar lavage (BAL) and peripheral PBMC comparing healthy ( = 4) and lung transplantation patients ( = 6, no CLAD and = 14 CLAD) using 14-color flow cytometry.

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Background: Nonmelanoma skin cancer (NMSC) is the most common malignancy affecting Caucasian populations and has been seeing steady increases in incidence globally for decades. Our previous study (from Alberta, Canada) had shown a plateau in the incidence rates for NMSC. This contrasts with data from other regions within Canada and throughout the world that indicated a continued increase in incidence rates of NMSCs.

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Purpose: Antimicrobial misuse contributes to antimicrobial resistance in thoracic transplant (TTx) and mechanical circulatory support (MCS) recipients. This study uses a modified Delphi method to define the expected appropriate antimicrobial prescribing for the common clinical scenarios encountered in TTx and MCS recipients.

Methods: An online questionnaire on managing 10 common infectious disease syndromes was submitted to a multidisciplinary Delphi panel of 25 experts from various disciplines.

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Idiopathic pulmonary fibrosis (IPF) is a progressive disease leading to significant morbidity and mortality. In 2017 the Thoracic Society of Australia and New Zealand (TSANZ) and Lung Foundation Australia (LFA) published a position statement on the treatment of IPF. Since that time, subsidized anti-fibrotic therapy in the form of pirfenidone and nintedanib is now available in both Australia and New Zealand.

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Article Synopsis
  • - The BCC (Burkholderia cepacia complex) consists of at least 22 genetically different gram-negative bacteria that live in various environments and can cause diseases in both plants and humans.
  • - Researchers studied an isolated pathogen from chronic lung infection patients, revealing that it has two separate evolutionary lineages and significant metabolic diversity related to different ecological roles.
  • - The study suggests recognizing one lineage as a new species due to its unique abilities in iron metabolism through siderophore synthesis, proposing it be named (sp. nov.).
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Background: Pregnancy in women with cystic fibrosis (CF) is becoming more common. Long-term metabolic issues such as diabetes are also becoming more common and have potentially important impacts on pregnancy outcomes. This study aimed to assess the impact of diabetes on pregnancy outcomes for women with CF.

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Article Synopsis
  • Idiopathic pulmonary fibrosis (IPF) is a severe lung disease with unknown causes, highlighting the urgent need for effective therapies.
  • Researchers analyzed single-cell transcriptomic data from IPF patients to identify specific gene signatures related to macrophage behavior that could help in developing antifibrotic treatments.
  • Using the Enrichr platform and a new drug screening assay, they discovered that glitazones and endiandrin A (from an Australian plant) can shift macrophage gene expression towards an antifibrotic state, suggesting new potential treatments for lung fibrosis.
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  • This study examined the role of CD39-expressing immune cells in chronic hypersensitivity pneumonitis (HP), focusing on their influence on inflammation and tissue remodeling in the lungs.
  • Through advanced techniques like single-cell transcriptomics and flow cytometry, researchers identified diverse immune cell types, including macrophages, T cells, and regulatory T cells (Tregs), with CD39-expressing Tregs showing increased ATP hydrolysis and regulatory functions.
  • The findings highlight the complex interactions between these cells in HP and suggest that CD39-expressing cells have dual functions as both Tregs and proinflammatory Th17 cells, pointing towards potential therapeutic strategies for managing HP.
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  • This study investigates the differences in characteristics of squamous cell carcinomas (SCCs) between organ transplant recipients (OTRs) and the general population, focusing on high-risk features like tumor size and cellular differentiation.
  • The research included two groups: OTRs from a specific study (STAR) and a broader population study (QSkin), both analyzed for SCCs diagnosed from 2012 to 2015.
  • Key findings showed that SCCs in OTRs predominantly affected the head/neck area and had higher rates of aggressive features compared to those in the general population, highlighting the increased risk faced by these patients.
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Unlabelled: We studied the feasibility of transplant-clinic staff routinely providing primary prevention advice to lung transplant recipients at high risk of skin cancer.

Methods: Patients enrolled by a transplant-clinic study nurse completed baseline questionnaires and received sun-safety brochures. For the 12-mo intervention, transplant physicians were alerted to provide standard sun-protection advice (use of hat, long sleeves, and sunscreen outdoors) by sun-advice prompt cards attached to participants' medical charts at each clinic visit.

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Background: Skin cancers are a major source of morbidity in lung transplant recipients, but the relative costs associated with their treatment are unknown.

Methods: We prospectively followed 90 lung transplant recipients from enrollment in the Skin Tumors in Allograft Recipients study in 2013-2015, until mid-2016. We undertook a cost analysis to quantify the health system costs relating to the index transplant episode and ongoing costs for 4 years.

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Mycoplasma hominis and Ureaplasma species infections in the post-transplant setting are believed to be donor-derived and can be associated with poor outcomes. Difficulty in culturing and identifying these organisms is a significant barrier to diagnosis and early intervention. Tetracyclines, macrolides and fluoroquinolones are the mainstay treatments to cure these infections; however, there are increasing reports of antibiotic resistance.

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Background: Biological sex, gender, and race are important considerations in patients with interstitial lung diseases (ILDs).

Research Question: Does a patient's sex assigned at birth, and race, influence ILD treatment initiation?

Study Design And Methods: Patients with ILD from three longitudinal prospective registries were compared in this observational study. ILD-related medications included antifibrotics and immunomodulating medications.

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Background: The primary aim of this study was to determine if allograft function in lung transplant (LTx) recipients improves or stabilizes after laparoscopic fundoplication (LF). The secondary aim was to examine the differences in forced expiratory volume in 1 second (FEV1) before and after LF for various subgroups to identify patients who obtained a superior respiratory outcome after LF, and potential predictive factors for this outcome.

Methods: Retrospective analysis of consecutive LTx recipients undergoing LF at a single centre in Brisbane, Australia between 2004 and 2018.

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