Publications by authors named "Watt M"

The activation of hypoxia-inducible factors (HIF)-1α and 2α in the liver is closely linked to the progression of fatty liver diseases. Prior studies indicated that disrupting hepatocyte HIF-2α attenuates diet-induced hepatic steatosis, subsequently decreasing fibrosis. However, the direct role of hepatocyte HIF-2α in liver fibrosis has not been addressed.

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Metabolic dysfunction-associated steatohepatitis (MASH) is characterized by defective lipid metabolism, which causes disease progression. MASH is also linked to various cardiometabolic risk factors, including obesity and type 2 diabetes. The contribution of defective lipid metabolism in MASH to cardiometabolic comorbidities is incompletely understood.

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Cyclic nucleotide-dependent phosphodiesterases (PDEs) play essential roles in regulating the malaria parasite life cycle, suggesting that they may be promising antimalarial drug targets. PDE inhibitors are used safely to treat a range of noninfectious human disorders. Here, we report three subseries of fast-acting and potent PDEβ inhibitors that block asexual blood-stage parasite development and that are also active against human clinical isolates.

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Background: The American Academy of Pediatrics recommends pediatric vision screening to detect and refer vision disorders during the critical early years when intervention yields the greatest benefits. We determined the rate of vision screening for US children 3-5 years of age with commercial insurance and compared rates among those living in rural versus urban areas. Children in rural compared with urban areas were expected to have lower rates of vision screening.

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Purpose: To investigate whether immigrant generation is associated with caregiver-reported receipt of vision testing.

Methods: Nationally representative data from the 2018-2019 National Survey of Children's Health was used. The primary exposure was immigrant generation, with first generation defined as child and all reported parents born outside the United States; second generation, as child born in the United States but at least one parent born outside the United States; and third generation, as all parents in the household born in the United States.

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Novel antimalarial compounds targeting both the pathogenic and transmissible stages of the human malaria parasite, Plasmodium falciparum, would greatly benefit malaria elimination strategies. However, most compounds affecting asexual blood stage parasites show severely reduced activity against gametocytes. The impact of this activity loss on a compound's transmission-blocking activity is unclear.

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AMBRA1 has critical roles in autophagy, mitophagy, cell cycle regulation, neurogenesis and apoptosis. Dysregulation of these processes are hallmarks of various neurodegenerative diseases and therefore AMBRA1 represents a potential therapeutic target. The flexibility of its intrinsically disordered regions allows AMBRA1 to undergo conformational changes and thus to perform its function as an adaptor protein for various different complexes.

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Article Synopsis
  • Penicillin allergies often lead to unnecessary treatment delays, as many reported allergies are not true allergies; efficient tools are needed to identify low-risk patients for safe de-labeling.
  • The FIRSTLINE electronic decision support tool was implemented to help clinicians assess and stratify penicillin allergy risk among pregnant women in Vancouver, with a focus on its reliability compared to allergist evaluations and other tools like JAMA and PENFAST.
  • Results showed that 97.2% of 181 patients were not allergic, and FIRSTLINE effectively identified a high percentage of low-risk patients, emphasizing the value of clinical algorithms in improving patient care.
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Objective: To report the incidence and characteristics of gastrointestinal ulceration lesions in dogs receiving an NSAID and/or corticosteroid.

Animals: 33 dogs.

Clinical Presentation: Medical records of dogs with gastrointestinal ulceration receiving NSAIDs and/or corticosteroids within 30 days of diagnosis between January 2012 and July 2022 at multiple referral institutions were reviewed.

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Village doctors in Bangladesh expressed broad interest in clinical decision support tools for pediatric diarrheal disease management and described their willingness to alter their antibiotic dispensing practices if guided by one. Future research should evaluate the tool’s impact on appropriate antibiotic use and patient outcomes.

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Lower respiratory tract infection (LRTI) is a common reason for hospitalization and antibacterial use globally. There is considerable overlap in the clinical presentation of bacterial and viral LRTIs. Low- or middle-income countries (LMICs) face the dual challenge of appropriately targeting antibacterials for bacterial LRTI while reducing inappropriate antibacterials for viral LRTI.

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Background: Medications for opioid use disorder (MOUD) are a crucial intervention for pregnant and postpartum individuals with opioid use disorder (OUD). However, there is paucity of data on the factors associated with MOUD treatment success in this population. This scoping review aimed to evaluate factors associated with MOUD success during the pregnancy and postpartum period.

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Background: Digital, or eHealth, interventions are highly promising approaches to help adolescents improve their health behaviours and reduce their risk of chronic disease. However, they often have low uptake and retention. There is also a paucity of high-quality research into the predictors of eHealth engagement, and a lack of studies that have systematically evaluated existing engagement strategies in adolescent populations.

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Article Synopsis
  • Metabolic diseases like obesity and type 2 diabetes involve insulin resistance, particularly in neurons of the arcuate nucleus of the hypothalamus that help regulate metabolism.
  • The study highlights how the perineuronal net, an extracellular matrix that surrounds these neurons, becomes altered during metabolic diseases, contributing to insulin resistance.
  • Disrupting this protective net in obese mice improves brain insulin access, reverses insulin resistance in neurons, and boosts metabolic health, revealing extracellular matrix changes as critical to understanding metabolic diseases.
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Background: Informally trained health care providers, such as village doctors in Bangladesh, are crucial in providing health care services to the rural poor in low- and middle-income countries. Despite being one of the primary vendors of antibiotics in rural Bangladesh, village doctors often have limited knowledge about appropriate antibiotic use, leading to varied and potentially inappropriate dispensing and treatment practices. In this study, we aimed to identify, map, and survey village doctors in the Sitakunda subdistrict of Bangladesh to understand their distribution, practice characteristics, clinical behaviours, access to technologies, and use of these technologies for clinical decision-making.

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Primary liver cancer is an increasing problem worldwide and is associated with significant mortality. A popular method of modeling liver cancer in mice is plasmid hydrodynamic tail vein injection (HTVI). However, plasmid-HTVI models rarely recapitulate the chronic liver injury which precedes the development of most human liver cancer.

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Introduction: While 10% of pregnant individuals report a penicillin allergy, there is no established best practice for penicillin allergy delabeling in pregnancy. To better understand options for penicillin delabeling, we aimed to evaluate two penicillin allergy delabeling protocols in pregnancy regarding efficacy, adverse events, and patient satisfaction.

Material And Methods: From July 2019 to December 2022, we completed a two-center prospective cohort study, where each site recruited pregnant patients over 24 weeks gestational age with a reported penicillin allergy.

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Glioblastoma (IDH-wildtype) represents a formidable challenge in oncology, lacking effective chemotherapeutic or biological interventions. The metabolic reprogramming of cancer cells is a hallmark of tumor progression and drug resistance, yet the role of metabolic reprogramming in glioblastoma during drug treatment remains poorly understood. The dihydroorotate dehydrogenase (DHODH) inhibitor BAY2402234 is a blood-brain barrier penetrant drug showing efficiency in in vivo models of many brain cancers.

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Toward repositioning the antitubercular clinical candidate SQ109 as an antimalarial, analogs were investigated for structure-activity relationships for activity against asexual blood stages of the human malaria parasite pathogenic forms, as well as transmissible, sexual stage gametocytes. We show that equipotent activity (IC) in the 100-300 nM range could be attained for both asexual and sexual stages, with the activity of most compounds retained against a multidrug-resistant strain. The multistage activity profile relies on high lipophilicity ascribed to the adamantane headgroup, and antiplasmodial activity is critically dependent on the diamine linker.

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Background: Lanadelumab was well tolerated and effective in preventing hereditary angioedema (HAE) attacks in the phase 3, double-blind, placebo-controlled Hereditary angioEdema Long-term Prophylaxis (HELP) study and subsequent HELP open-label extension (OLE) study (NCT02741596).

Objective: To evaluate outcomes from HELP OLE for adolescent patients aged 12 to 17 years.

Methods: The HELP OLE study comprised patients who completed the HELP study (rollovers) and new eligible (lanadelumab-naive) patients.

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Article Synopsis
  • Dysferlinopathies are a type of muscular dystrophy caused by mutations that lead to a deficiency of the protein dysferlin, resulting in muscle wasting and inflammation, with no available treatments.
  • Glucocorticoids, commonly used for reducing inflammation in muscular dystrophies, have been found to worsen conditions in dysferlinopathy patients by accelerating muscle strength loss.
  • Research on mice with dysferlin deficiency revealed that glucocorticoid treatment exacerbates muscle damage and alters gene expression related to inflammation and metabolism, indicating the need for alternative therapeutic strategies.
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Background: Benralizumab has been reported to lead to clinical remission of severe eosinophilic asthma (SEA) at 1 year in some patients. However, whether this is maintained over a longer term remains unclear. Additionally, the impact of pulmonary and extrapulmonary comorbidities on the ability to meet remission is poorly understood.

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Pre-exposure prophylaxis (PrEP) for COVID-19 provides additional protection, beyond vaccines alone, for individuals who are immunocompromised (IC). This may reduce the need for preventative behavioral modification, such as shielding-a behavioral restriction limiting an IC individual to minimize face-to-face interactions and/or crowded places. Therefore, PrEP may improve psychosocial well-being and health-related quality of life (HRQoL) for individuals with IC conditions.

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Mangroves in Southeast Asia provide numerous supporting, provisioning, regulating, and cultural services that are crucial to the environment and local livelihoods since they support biodiversity conservation and climate change resilience. However, Southeast Asia mangroves face deforestation threats from the expansion of commercial aquaculture, agriculture, and urban development, along with climate change-related natural processes. Ecotourism has gained prominence as a financial incentive tool to support mangrove conservation and restoration.

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