Candida albicans is the most common human fungal pathogen, causing diseases ranging from local to life-threating systemic infections. Tyrosine kinase 2 (TYK2), a crucial mediator in several cytokine signaling pathways, has been associated with protective functions in various microbial infections. However, its specific contribution in the immune response to fungal infections has remained elusive.
View Article and Find Full Text PDFHistone deacetylases (HDACs) contribute to shaping many aspects of T cell lineage functions in anti-infective surveillance; however, their role in fungus-specific immune responses remains poorly understood. Using a T cell-specific deletion of HDAC1, we uncover its critical role in limiting polarization toward Th17 by restricting expression of the cytokine receptors gp130 and transforming growth factor β receptor 2 (TGF-βRII) in a fungus-specific manner, thus limiting Stat3 and Smad2/3 signaling. Controlled release of interleukin-17A (IL-17A) and granulocyte-macrophage colony-stimulating factor (GM-CSF) is vital to minimize apoptotic processes in renal tubular epithelial cells in vitro and in vivo.
View Article and Find Full Text PDFPolymicrobial co- and superinfections involving bacterial and fungal pathogens pose serious challenges for diagnosis and therapy, and are associated with elevated morbidity and mortality. However, the metabolic dynamics of bacterial-fungal interactions (BFI) and the resulting impact on disease outcome remain largely unknown. The fungus Aspergillus fumigatus and the bacterium Klebsiella pneumoniae are clinically important pathogens sharing common niches in the human body, especially in the lower respiratory tract.
View Article and Find Full Text PDFUnlabelled: , a multidrug-resistant human fungal pathogen, was first identified in 2009 in Japan. Since then, systemic infections have now been reported in more than 50 countries, with mortality rates of 30%-60%. A major contributing factor to its high inter- and intrahospital clonal transmission is that unlike most species, displays unique skin tropism and can stay on human skin for a prolonged period.
View Article and Find Full Text PDFIntraspecies variations that affect pathogenicity and antifungal resistance traits pose a serious obstacle to efficient therapy of Candida auris infections. Recent reports indicate that mutations determine drug susceptibility and virulence. However, mutations alone cannot fully explain a bewildering variety of phenotypes in clinical isolates from known C.
View Article and Find Full Text PDFAllosteric regulators acting as pharmacological chaperones hold promise for innovative therapeutics since they target noncatalytic sites and stabilize the folded protein without competing with the natural substrate, resulting in a net gain of function. Exogenous allosteric regulators are typically more selective than active site inhibitors and can be more potent than competitive inhibitors when the natural substrate levels are high. To identify novel structure-targeted allosteric regulators (STARs) that bind to and stabilize the mitochondrial enzyme glutaryl-CoA dehydrogenase (GCDH), the computational site-directed enzyme enhancement therapy (SEE-Tx) technology was applied.
View Article and Find Full Text PDFPurpose: The speech-language-hearing sciences (SLHS) field relies on rigorous research to inform clinical practice and improve outcomes for individuals with communication, swallowing, and hearing needs. However, a significant challenge in our field is the lack of accessibility, transparency, and reproducibility of this research. Such insufficiencies limit the generalizability and impact of study findings, particularly intervention research, as it becomes difficult to replicate and use the interventions in both clinical practice and research.
View Article and Find Full Text PDFUnlabelled: , a multidrug-resistant human fungal pathogen, was first identified in 2009 in Japan. Since then, systemic infections have now been reported in more than 50 countries, with mortality rates of 30-60%. A major contributing factor to its high inter- and intrahospital clonal transmission is that unlike most species, displays unique skin tropism and can stay on human skin for a prolonged period.
View Article and Find Full Text PDFCandida albicans, the primary etiology of human mycoses, is well-adapted to catabolize proline to obtain energy to initiate morphological switching (yeast to hyphal) and for growth. We report that put1-/- and put2-/- strains, carrying defective Proline UTilization genes, display remarkable proline sensitivity with put2-/- mutants being hypersensitive due to the accumulation of the toxic intermediate pyrroline-5-carboxylate (P5C), which inhibits mitochondrial respiration. The put1-/- and put2-/- mutations attenuate virulence in Drosophila and murine candidemia models and decrease survival in human neutrophils and whole blood.
View Article and Find Full Text PDFThe World Health Organization (WHO) declared certain fungal pathogens as global health threats for the next decade. Candida auris (C. auris) is a newly emerging skin-tropic multidrug-resistant fungal pathogen that can cause life-threatening infections of high mortality in hospitals and healthcare settings.
View Article and Find Full Text PDFPurpose: Research indicates that when teaching grammatical forms to children, the verbs used to model specific grammatical inflections matter. When learning grammatical forms, children have higher performance when they hear many unique verb forms that vary in their frequency and phonological complexity. In this tutorial, we demonstrate a method for identifying and characterizing a large number of verbs based on their frequency and complexity.
View Article and Find Full Text PDFPurpose: Because the development of grammatical forms is difficult for many children with developmental language disorder (DLD), language interventions often focus on supporting children's use of grammatical language. This article proposes five additional principles to those suggested by Fey et al. (2003) to facilitate the development of grammatical forms by children with DLD.
View Article and Find Full Text PDFObjective: Inflammatory cardiomyopathy is characterised by inflammatory infiltrates leading to cardiac injury, left ventricular (LV) dilatation and reduced LV ejection fraction (LVEF). Several viral pathogens and autoimmune phenomena may cause cardiac inflammation.The effects of the gain of function single-nucleotide polymorphism (SNP) rs12212067 on inflammation and outcome were studied in a cohort of patients with inflammatory dilated cardiomyopathy (DCMi) in relation to cardiac viral presence.
View Article and Find Full Text PDFCandida albicans is a normal component of the human microflora that colonizes mucosal/epithelial surfaces and the gastrointestinal tract as a commensal organism. However, in an immunocompromised host, it can cause life-threatening infections of high mortality and morbidity. Virulence as well as antifungal drug resistance of C.
View Article and Find Full Text PDFCandida auris emerged as a human fungal pathogen only during the past decade. Remarkably, C. auris displays high degrees of genomic diversity and phenotypic plasticity, with four major clades causing hospital outbreaks with high mortality and morbidity rates.
View Article and Find Full Text PDFPurpose: Caregiver-implemented interventions are frequently used to support the early communication of young children with language impairment. Although there are numerous studies and meta-analyses supporting their use, there is a need to better understand the intervention approaches and identify potential gaps in the research base. With that premise, we conducted a scoping review to synthesize existing data with an end goal of informing future research directions.
View Article and Find Full Text PDFCandida auris is an emerging multidrug-resistant human fungal pathogen often refractory to treatment by all classes of antifungal drugs. Amphotericin B (AmB) is a fungicidal drug that, despite its toxic side effects, remains a drug of choice for the treatment of drug-resistant fungal infections, including those caused by C. auris.
View Article and Find Full Text PDFMast cells (MCs) play important roles in normal immune responses and pathological states. The location of MCs on the boundaries between tissues and the external environment, including gut mucosal surfaces, lungs, skin, and around blood vessels, suggests a multitude of immunological functions. Thus, MCs are pivotal for host defense against different antigens, including allergens and microbial pathogens.
View Article and Find Full Text PDFBiochim Biophys Acta Bioenerg
September 2021
Complexome profiling is a rapidly spreading, powerful technique to gain insight into the nature of protein complexes. It identifies and quantifies protein complexes separated into multiple fractions of increasing molecular mass using mass spectrometry-based, label-free bottom-up proteomics. Complexome profiling enables a sophisticated and thorough characterization of the composition, molecular mass, assembly, and interactions of protein complexes.
View Article and Find Full Text PDFMultidrug resistance (MDR) can be a serious complication for the treatment of cancer as well as for microbial and parasitic infections. Dysregulated overexpression of several members of the ATP-binding cassette transporter families have been intimately linked to MDR phenomena. Three paradigm ABC transporter members, ABCB1 (P-gp), ABCC1 (MRP1) and ABCG2 (BCRP) appear to act as brothers in arms in promoting or causing MDR in a variety of therapeutic cancer settings.
View Article and Find Full Text PDFZinc (Zn) is a trace element, playing pivotal roles during host-pathogen interactions. Macrophages can sequester Zn and restrict bioavailability or increase phagolysosomal Zn to kill pathogens. This method quantifies Zn-mediated clearance of the human fungal pathogen after phagocytosis by innate immune cells.
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