43 results match your criteria: "University of Queensland Frazer Institute[Affiliation]"

Toward early prediction of chronic allograft dysfunction using molecular biomarkers.

J Heart Lung Transplant

November 2024

The University of Queensland, School of Medicine, Brisbane, Queensland, Australia; Queensland Lung Transplant Service, The Prince Charles Hospital, Brisbane, Queensland, Australia.

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  • Adrenal vein sampling (AVS) is the preferred method for identifying unilateral subtypes of primary aldosteronism (PA), which can be treated with surgery for a potential cure.
  • The procedure is technically demanding and often performed by specialized interventional radiologists, but variations in protocols can affect its success and patient care.
  • To standardize AVS practices and improve outcomes, an Australian and New Zealand AVS Working Group was formed to create expert consensus recommendations that can be utilized by all healthcare professionals involved in PA management.
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The mineralocorticoid system, comprising the renin-angiotensin-aldosterone system (RAAS) and associated receptors, is traditionally viewed as a regulator of sodium and fluid balance and blood pressure (BP), with the main mineralocorticoid hormone aldosterone acting via the mineralocorticoid receptor (MR) in distal renal tubules. Over the past few decades, there has been a wider understanding of the role of the mineralocorticoid system in regulating both classical BP-dependent and non-BP-dependent systemic effects. Mounting evidence indicates the novel role of the mineralocorticoid system in cardiometabolic health, with excess mineralocorticoid system activity being associated with adiposity, diabetes, insulin resistance and cardiovascular diseases independent of its effect on BP, and RAAS blockade and MR antagonists offering protection against cardiometabolic dysfunction.

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Introduction: Common major co-formulants in glyphosate-based herbicides, polyethoxylated tallow amine surfactants, are suspected of being more toxic than glyphosate, contributing to the toxicity in humans. However, limited information exists on using polyethoxylated tallow amine concentrations to predict clinical outcomes. We investigated if plasma concentrations of glyphosate, its metabolite and polyethoxylated tallow amines can predict acute kidney injury and case fatality in glyphosate poisoning.

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  • Mitophagy, the process that removes damaged mitochondria, needs to be tightly controlled to keep cells healthy, with the SCF ubiquitin ligase complex playing a key role by degrading mitophagy receptors BNIP3 and NIX.
  • Mutations in the FBXL4 gene can lead to mitochondrial diseases due to increased mitophagy, showing that proper regulation is crucial.
  • The phosphatase PPTC7 is essential for linking BNIP3 and NIX to FBXL4 for their degradation, and it helps to prevent excessive mitophagy by responding adaptively to changes in cell conditions.
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Tissue-resident innate lymphoid cells (ILCs) play a vital role in the frontline defense of various tissues, including the lung. The development of type 2 ILCs (ILC2s) depends on transcription factors such as GATA3, RORα, GFI1, and Bcl11b; however, the factors regulating lung-resident ILC2s remain unclear. Through fate mapping analysis of the paralog transcription factors GFI1 and GFI1B, we show that GFI1 is consistently expressed during the transition from progenitor to mature ILC2s.

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  • Medication non-adherence in dialysis patients can lead to higher mortality rates and healthcare costs, influenced by beliefs about the necessity of medication and concerns related to them.
  • A study utilizing an in-person questionnaire evaluated factors affecting medication adherence, with findings indicating that a belief in the necessity of medication increases adherence while concerns decrease it.
  • Additionally, factors like health literacy and positive illness perceptions play a significant role in improving adherence, mainly by reducing negative concerns about medications.
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  • This study examines how two feeding systems—separate feeding (SF) and total mixed rations (TMR)—affect ruminal fermentation, methane output, and gut microbiota in Hanwoo steers over a 29-day period.
  • The results showed that TMR-fed steers had higher fiber digestibility but no significant difference in methane production compared to SF-fed steers.
  • TMR feeding also influenced the composition of ruminal microbes, highlighting the potential for different feeding strategies to affect microbial diversity and provide insights for future research on reducing methane emissions from cattle.
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Organoid generation from pluripotent stem cells is a cutting-edge technique that has created new possibilities for modelling human organs , as well as opening avenues for regenerative medicine. Here, we present a protocol for generating skin organoids (SKOs) from human-induced pluripotent stem cells (hiPSCs) via direct embryoid body formation. This method provides a consistent start point for hiPSC differentiation, resulting in SKOs with complex skin architecture and appendages (e.

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Unlabelled: CD4 T cells play a key role in γ-herpesvirus infection control. However, the mechanisms involved are unclear. Murine herpesvirus type 4 (MuHV-4) allows relevant immune pathways to be dissected experimentally in mice.

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We describe herein the European Reference Network on Rare Endocrine Conditions clinical practice guideline on diagnosis and management of familial forms of hyperaldosteronism. The guideline panel consisted of 10 experts in primary aldosteronism, endocrine hypertension, paediatric endocrinology, and cardiology as well as a methodologist. A systematic literature search was conducted, and because of the rarity of the condition, most recommendations were based on expert opinion and small patient series.

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We are building the world's first Virtual Child-a computer model of normal and cancerous human development at the level of each individual cell. The Virtual Child will "develop cancer" that we will subject to unlimited virtual clinical trials that pinpoint, predict, and prioritize potential new treatments, bringing forward the day when no child dies of cancer, giving each one the opportunity to lead a full and healthy life.

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Background: Pregnant patients with obesity may have compromised noninvasive blood pressure (NIBP) measurement. We assessed the accuracy and trending ability of the ClearSight™ finger cuff (FC) with invasive arterial monitoring (INV) and arm NIBP, in obese patients having cesarean delivery.

Methods: Participants were aged ≥18 years, ≥34 weeks gestation, and body mass index (BMI) ≥ 40 kg m.

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Fibroblastic reticular cells (FRCs) construct microanatomical niches that support lymph node (LN) homeostasis and coordination of immune responses. Transcription factors regulating the functionality of FRCs remain poorly understood. Here, we investigated the role of the transcription factor SpiB that is expressed in LN FRCs.

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Mitophagy is a critical mitochondrial quality control process that selectively removes dysfunctional or excess mitochondria through the autophagy-lysosome system. The process is tightly controlled to ensure cellular and physiological homeostasis. Insufficient mitophagy can result in failure to remove damaged mitochondria and consequent cellular degeneration, but it is equally important to appropriately restrain mitophagy to prevent excessive mitochondrial depletion.

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Aims: To investigate the effect of Lactobacillus rhamnosus on viral replication and cellular response to human rhinovirus (HRV) infection, including the secretion of antiviral and inflammatory mediators from well-differentiated nasal epithelial cells (WD-NECs).

Methods And Results: The WD-NECs from healthy adult donors (N = 6) were cultured in vitro, exposed to different strains of L. rhamnosus (D3189, D3160, or LB21), and infected with HRV (RV-A16) after 24 h.

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Objective: Monofluoroacetate (MFA) is a potent toxin that blocks ATP production via the Krebs cycle and causes acute toxicity in ruminants consuming MFA-containing plants. The rumen bacterium, Cloacibacillus porcorum strain MFA1 belongs to the phylum Synergistota and can produce fluoride and acetate from MFA as the end-products of dehalorespiration. The aim of this study was to identify the genomic basis for the metabolism of MFA by this bacterium.

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  • - Antibody-secreting plasma cells (PCs) develop in secondary lymphoid organs but can also be found in various tissues throughout the body, each with unique functional adaptations based on their environment.
  • - Surprisingly, all tissue-resident plasma cells (TrPCs) exhibit long lifespans, which is influenced by internal factors such as the type of immunoglobulin they produce.
  • - The bone marrow serves as a unique reservoir for PCs from different origins, preserving features of their original tissue's transcriptional programming, highlighting how their longevity is shaped by both initial signals and their current tissue environment.
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Intraepithelial lymphocytes (IELs), including αβ and γδ T cells (T-IELs), constantly survey and play a critical role in maintaining the gastrointestinal epithelium. We show that cytotoxic molecules important for defense against cancer were highly expressed by T-IELs in the small intestine. In contrast, abundance of colonic T-IELs was dependent on the microbiome and displayed higher expression of TCF-1/ and a reduced effector and cytotoxic profile, including low expression of granzymes.

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The evolving role of methanogenic archaea in mammalian microbiomes.

Front Microbiol

September 2023

Faculty of Medicine, University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, QLD, Australia.

Methanogenic archaea (methanogens) represent a diverse group of microorganisms that inhabit various environmental and host-associated microbiomes. These organisms play an essential role in global carbon cycling given their ability to produce methane, a potent greenhouse gas, as a by-product of their energy production. Recent advances in culture-independent and -dependent studies have highlighted an increased prevalence of methanogens in the host-associated microbiome of diverse animal species.

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