Publications by authors named "K Arvaniti"

Antimicrobial resistance poses a major threat to human health worldwide and the implementation of antimicrobial stewardship programs (ASPs), including antimicrobial de-escalation (ADE), is a multifaceted tool for minimizing unnecessary or inappropriate antibiotic exposure. This was a prospective observational study of 142 non-Intensive Care Unit (ICU) patients with microbiologically documented infection who were initially administered empirical antimicrobial therapy and admitted to the medical wards of 6 tertiary-care hospitals in Greece from January 2017 to December 2018. Patients were divided into two groups, the ADE and non-ADE group, based on whether ADE was applied or not, respectively.

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Article Synopsis
  • The study analyzed intra-abdominal infections (IAI) in immunocompromised versus non-immunocompromised ICU patients using data from the "AbSeS" database, which included 2,589 patients across 309 ICUs in 42 countries.
  • Immunocompromised patients (9.2% of the cohort) showed different infection patterns, such as more frequent typhlitis and a higher incidence of healthcare-associated infections, but had similar mortality rates compared to immunocompetent patients (31.1% vs. 28.9%).
  • Key risk factors for mortality in immunocompromised patients included septic shock at presentation and ongoing inflammation after source control, indicating that despite presenting with more severe conditions
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Microbial NAT enzymes, which employ acyl-CoA to acylate aromatic amines and hydrazines, have been well-studied for their role in xenobiotic metabolism. Some homologues have also been linked to secondary metabolism, but this function of NAT enzymes is not as well-known. For this comparative study, we surveyed sequenced microbial genomes to update the list of formally annotated NAT genes, adding over 4000 new sequences (mainly bacterial, but also archaeal, fungal and protist) and portraying a broad but not universal distribution of NATs in the microbiocosmos.

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Candida auris is an emerging fungal pathogen associated with multi-drug resistance rates and widespread outbreaks in hospitals and healthcare units worldwide. Sequencing studies have revealed that different clonal lineages of the fungus seem to be prevalent among distinct geographical sites. The first case of C.

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