Publications by authors named "Phu A"

Aims: There are limited studies on dipeptidyl-peptidase 4 inhibitor (DPP-4i), sodium glucose cotransporter 2 inhibitor (SGLT2-i), and glucagon-like peptide 1 (GLP-1) receptor agonist use and occurrence of diabetic macular edema (DME). The objective of this study was to determine the association between DPP-4i, SGLT2-i, and GLP-1 receptor agonist use and occurrence of DME.

Methods: Proportional hazard models were used to evaluate the change in hazard of developing DME associated with DPP-4i, SGLT2-i, or GLP-1 receptor agonist use.

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Background: Hepatitis C virus (HCV) infection can now be cured with well-tolerated direct-acting antiviral (DAA) therapy. However, a potential barrier to HCV elimination is the emergence of resistance-associated substitutions (RASs) that reduce the efficacy of antiviral drugs, but real-world studies assessing the clinical impact of RASs are limited. Here, an analysis of the impact of RASs on retreatment outcomes for different salvage regimens in patients nationally who failed first-line DAA therapy is reported.

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Article Synopsis
  • Quetiapine is an atypical antipsychotic used for various conditions, including schizophrenia, bipolar disorder, and treatment-resistant depression, due to its mood-stabilizing effects.
  • A case report highlights a 42-year-old male who developed psychotic symptoms after starting quetiapine for major depressive disorder, raising concerns about potential quetiapine-induced psychosis.
  • The Naranjo scale assessed the likelihood of an adverse drug reaction, scoring a three, while suggesting other causes for psychosis, emphasizing the need for careful administration and consideration of side effects.
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Background: Viral respiratory tract infections are frequently complicated by secondary bacterial infections. This study aimed to use machine learning to predict the risk of bacterial superinfection in SARS-CoV-2-positive individuals.

Methods: In this prospective, multicentre, observational cohort study done in nine centres in six countries (Australia, Indonesia, Singapore, Italy, Czechia, and France) blood samples and RNA sequencing were used to develop a robust model of predicting secondary bacterial infections in the respiratory tract of patients with COVID-19.

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Serotonin syndrome (SS) describes a life-threatening clinical condition that can develop within hours or days after taking serotonergic medication(s). Medication adverse reactions, overdose, or drug interactions can cause this syndrome. Patients often present with symptoms of hyperthermia, muscle rigidity, hyperreflexia, and clonus.

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Article Synopsis
  • The Omicron variant of COVID-19, which began in 2022, evolved from several lineages (BA.1, BA.2, BA.5) and developed mutations that help it evade neutralizing antibodies.
  • Researchers evaluated the effectiveness of antibody responses by tracking over 420,000 U.S. plasma donors and studying blood samples from vaccinated and recovered individuals, along with testing clinically approved therapies.
  • Findings indicated that antibody responses improved over time, but emerging variants like BQ.1.1 and XBF were increasingly resistant to treatments like Evusheld and Sotrovimab, suggesting that even dominant variants can evade antibodies while maintaining a persistent advantage in spreading.
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Background And Aims: Management of NAFLD involves noninvasive prediction of fibrosis, which is a surrogate for patient outcomes. We aimed to develop and validate a model predictive of liver-related events (LREs) of decompensation and/or HCC and compare its accuracy with fibrosis models.

Approach And Results: Patients with NAFLD from Australia and Spain who were followed for up to 28 years formed derivation (n = 584) and validation (n = 477) cohorts.

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Patients with preexisting metabolic disorders such as diabetes are at a higher risk of developing severe coronavirus disease 2019 (COVID-19). Mitochondrion, the very organelle that controls cellular metabolism, holds the key to understanding disease progression at the cellular level. Our current study aimed to understand how cellular metabolism contributes to COVID-19 outcomes.

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Background: Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Infected individuals display a wide spectrum of disease severity, as defined by the World Health Organization (WHO). One of the main factors underlying this heterogeneity is the host immune response, with severe COVID-19 often associated with a hyperinflammatory state.

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Purpose: Robust biomarkers that predict disease outcomes amongst COVID-19 patients are necessary for both patient triage and resource prioritisation. Numerous candidate biomarkers have been proposed for COVID-19. However, at present, there is no consensus on the best diagnostic approach to predict outcomes in infected patients.

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Article Synopsis
  • In July 2021, a COVID-19 outbreak occurred at an event meant for fully vaccinated attendees, highlighting failures in safety protocols.
  • The investigation found unvaccinated staff, inadequate masking, poor ventilation, and overcrowding contributed to the outbreak.
  • It's crucial for businesses to create and enforce thorough COVID-19 prevention plans to minimize the risk of virus spread at similar events.
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Objective: To evaluate the impact of fetal alcohol spectrum disorder (FASD) on child and family functioning.

Design: Prospective survey.

Setting: Multidisciplinary FASD assessment service.

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Aim: We aimed to describe health-related out-of-pocket (OOP) expenses incurred by Australian families living with children with chronic and complex diseases.

Methods: A prospective pilot study of OOP expenses in families with children with tuberous sclerosis (TS) or mitochondrial disorders (MD) in 2016-2017. An initial survey assessed the family's financial situation, child's health functioning and estimated previous 6 months' and lifetime OOP expenses.

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Direct acting antivirals (DAAs) have revolutionized hepatitis C virus (HCV) treatment, but drug resistance could undermine proposed global elimination targets. Real-world studies are needed to inform the impact of widespread DAA treatment on antiviral resistance in the community. The prevalence and range of posttreatment resistance-associated substitutions (RASs) was determined in Australian patients with open access to DAAs through a wide range of prescribers.

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This report summarises the cases reported to the Australian Paediatric Surveillance Unit (APSU) of rare infectious diseases or rare complications of more common infectious diseases in children. During the calendar year 2016, there were approximately 1500 paediatricians reporting to the APSU and the monthly report card return rate was 90%. APSU continued to provide unique national data on the perinatal exposure to HIV, congenital rubella, congenital cytomegalovirus, neonatal and infant herpes simplex virus, and congenital and neonatal varicella.

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Objective: To describe the experiences of Australian paediatricians while caring for children with rare diseases, and their educational and resource needs.

Design: A brief online survey was developed and deployed to a representative sample of 679 paediatricians from the Australian Paediatric Surveillance Unit database.

Results: Of the 679 paediatricians, 242 (36%) completed the survey.

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Background: Childhood interstitial lung disease (chILD) represents a rare heterogeneous group of respiratory disorders. In the absence of randomized controlled clinical trials, global collaborations have utilized case series with an aim to standardising approaches to diagnosis and management. Australasian data are lacking.

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Host response biomarkers can accurately distinguish between influenza and bacterial infection. However, published biomarkers require the measurement of many genes, thereby making it difficult to implement them in clinical practice. This study aims to identify a single-gene biomarker with a high diagnostic accuracy equivalent to multi-gene biomarkers.

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Objective: The WHO reports that female genital mutilation/cutting (FGM/C) is an ancient cultural practice prevalent in many countries. FGM/C has been reported among women resident in Australia. Our paper provides the first description of FGM/C in Australian children.

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Background: The World Health Organisation (WHO) estimates that 100-140 million girls and women have undergone female genital mutilation or cutting (FGM/C). FGM/C is an ancient cultural practice prevalent in 26 countries in Africa, the Middle East and Asia. With increased immigration, health professionals in high income countries including UK, Europe, North America and Australia care for women and girls with FGM/C.

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Objectives: Childhood interstitial lung disease (chILD) is a group of rare chronic and complex disorders of variable pathology. There has been no systematic review of published chILD research. This study aimed to describe chILD classification systems, epidemiology, morbidity, treatments, outcomes, and the impact of chILD on families and the burden on health services.

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Androgen administration to castrated individuals was purported to decrease activity in the serotonin system. However, we found that androgen administration to castrated male macaques increased fenfluramine-induced serotonin release as reflected by increased prolactin secretion. In this study, we sought to define the effects of androgens and aromatase inhibition on serotonin-related gene expression in the dorsal raphe, as well as serotonergic innervation of the LC.

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Impulse control and related disorders (ICRD) are not uncommon in patients with idiopathic Parkinson's disease (PD). The present study aimed to investigate the effects of ICRD on quality of life (QoL) and disability in PD. From two movement disorder clinics in Sydney, Australia, 100 consecutive patients with PD were included in the trial.

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