Publications by authors named "Parker Reitler"

Invasive fungal infections impose an enormous clinical, social, and economic burden on humankind. One of the most common species responsible for invasive fungal infections is . More than 30% of patients with disseminated candidiasis fail therapy with existing antifungal drugs, including the widely used azole class.

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Invasive fungal infections (IFIs) impose an enormous clinical, social, and economic burden on humankind. For many IFIs, ≥ 30% of patients fail therapy with existing antifungal drugs, including the widely used azole class. We previously identified a collection of 13 approved medications that antagonize azole activity.

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The azole antifungals inhibit sterol 14α-demethylase (S14DM), which depletes cellular ergosterol and promotes synthesis of the dysfunctional lipid 14α-methylergosta-8,24(28)-dien-3β,6α-diol, ultimately arresting growth. Mutations that inactivate sterol Δ-desaturase (Erg3p), the enzyme that produces the sterol-diol upon S14DM inhibition, enhances Candida albicans growth in the presence of the azoles. However, null mutants are sensitive to some physiological stresses and can be less virulent than the wild type.

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The increasing incidence of and high mortality rates associated with invasive fungal infections (IFIs) impose an enormous clinical, social, and economic burden on humankind. In addition to microbiological resistance to existing antifungal drugs, the large number of unexplained treatment failures is a serious concern. Due to the extremely limited therapeutic options available, it is critical to identify and understand the various causes of treatment failure if patient outcomes are to improve.

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Article Synopsis
  • Calcium is crucial for cell signaling in eukaryotes, but must be kept low in resting cells to prevent toxicity; in fungi, excess calcium is stored in vacuoles through pumps like Vcx1p and Pmc1p.
  • The study investigated the roles of these calcium pumps in a human fungal pathogen's ability to grow, form biofilms, and cause disease, finding that Pmc1p is essential for these processes.
  • Pmc1p also impacts the pathogen's resistance to antifungals, indicating that maintaining calcium balance is vital for fungal survival and virulence, and could lead to new treatment strategies.
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The incidence of invasive fungal infections has risen significantly in recent decades as medical interventions have become increasingly aggressive. These infections are extremely difficult to treat due to the extremely limited repertoire of systemic antifungals, the development of drug resistance, and the extent to which the patient's immune function is compromised. Even when the appropriate antifungal therapies are administered in a timely fashion, treatment failure is common, even in the absence of microbial resistance.

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