Publications by authors named "Johnathan Patterson"

Article Synopsis
  • The Nix-TB clinical trial tested a new 6-month TB treatment called the BPaL regimen, which includes bedaquiline, pretomanid, and linezolid, achieving a 90% cure rate in drug-resistant TB patients, but caused severe side effects due to linezolid.
  • Researchers propose substituting linezolid with inhaled spectinamide 1599 to create the BPaS regimen, which shows similar effectiveness as the BPaL regimen while reducing adverse events.
  • In animal studies, the BPaS regimen demonstrated equivalent bactericidal effects with fewer side effects like weight loss and anemia compared to BPaL, suggesting inhaled spectinamide has a superior safety profile in
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Unlabelled: The Nix-TB clinical trial evaluated a new 6-month regimen containing three-oral- drugs; bedaquiline (B), pretomanid (Pa) and linezolid (L) (BPaL regimen) for treatment of tuberculosis (TB). This regimen achieved remarkable results as almost 90% of the multidrug resistant (MDR) or extensively drug resistant (XDR) TB participants were cured but many patients also developed severe adverse events (AEs). The AEs were associated with the long-term administration of the protein synthesis inhibitor linezolid.

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Article Synopsis
  • The covalent modification of bacterial polysaccharides may influence their production, export, and biological functions, but it's unclear how mycobacteria, like Mycobacterium tuberculosis (Mtb), utilize similar mechanisms.
  • Research shows that specific succinyl groups on Mtb's lipoarabinomannan play a key role in determining the mannose-capping of this molecule, affecting its overall biological activity.
  • The absence of succinyl groups on Mtb's primary cell envelope polysaccharides results in heightened pro-inflammatory responses in both murine and human macrophages, highlighting succinylation as a vital factor in Mtb's regulation of inflammation.
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Bacille Calmette-Guerin (BCG) is the only licensed vaccine against Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB) disease. However, BCG has limited efficacy, necessitating the development of better vaccines. Non-tuberculous mycobacteria (NTMs) are opportunistic pathogens present ubiquitously in the environment.

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Durotaxis is the process by which cells sense and respond to gradients of tension. In order to study this process in vitro, the stiffness of the substrate underlying a cell must be manipulated. While hydrogels with graded stiffness and long-term migration assays have proven useful in durotaxis studies, immediate, acute responses to local changes in substrate tension allow focused study of individual cell movements and subcellular signaling events.

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Haptophytes are recognized as seminal players in aquatic ecosystem function. These algae are important in global carbon sequestration, form destructive harmful blooms, and given their rich fatty acid content, serve as a highly nutritive food source to a broad range of eco-cohorts. Haptophyte dominance in both fresh and marine waters is supported by the mixotrophic nature of many taxa.

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Many species of harmful algae transition between a motile, vegetative stage in the water column and a non-motile, resting stage in the sediments. Physiological and behavioral traits expressed during benthic-pelagic transition potentially regulate the timing, location and persistence of blooms. The roles of key physiological and behavioral traits involved in resting cell emergence and bloom formation were examined in two geographically distinct strains of the harmful alga, Heterosigma akashiwo.

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