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Open Access Publications

2022

Anti-Bacterial Agents

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The Phenylacetic Acid Catabolic Pathway Regulates Antibiotic And Oxidative Stress Responses In Acinetobacter, Anna J Hooppaw, Jenna C Mcguffey, Gisela Di Venanzio, Juan C Ortiz-Marquez, Brent S Weber, Tasia Joy Lightly, Tim Van Opijnen, Nichollas E Scott, Silvia T Cardona, Mario F Feldman Jun 2022

The Phenylacetic Acid Catabolic Pathway Regulates Antibiotic And Oxidative Stress Responses In Acinetobacter, Anna J Hooppaw, Jenna C Mcguffey, Gisela Di Venanzio, Juan C Ortiz-Marquez, Brent S Weber, Tasia Joy Lightly, Tim Van Opijnen, Nichollas E Scott, Silvia T Cardona, Mario F Feldman

Open Access Publications

The opportunistic pathogen Acinetobacter baumannii is responsible for a wide range of infections that are becoming increasingly difficult to treat due to extremely high rates of multidrug resistance. Acinetobacter's pathogenic potential is thought to rely on a "persist and resist" strategy that facilitates its remarkable ability to survive under a variety of harsh conditions. The


Ceftriaxone Resistance And Adequacy Of Initial Antibiotic Therapy In Community Onset Bacterial Pneumonia, Richard F Van Besien, Nicholas Hampton, Scott T Micek, Marin H Kollef May 2022

Ceftriaxone Resistance And Adequacy Of Initial Antibiotic Therapy In Community Onset Bacterial Pneumonia, Richard F Van Besien, Nicholas Hampton, Scott T Micek, Marin H Kollef

Open Access Publications

ABSTRACT: Much remains unknown about the impact of initial antibiotic adequacy on mortality in community onset bacterial pneumonia (COBP). Therefore, we performed a study to determine how the adequacy of initial antibiotic therapy affects in-hospital mortality for patients with COBP.We carried out a retrospective cohort study among the 11 BJC Healthcare community and academic hospitals in Missouri and Illinois. The electronic medical records for BJC Healthcare were queried to obtain a set of patient admissions with culture positive (respiratory or blood) COBP admitted from January 1, 2016 through December 31, 2019. Patients with COBP required an International Classification of Diseases …


Longitudinal Dynamics Of Skin Bacterial Communities In The Context Of Staphylococcus Aureus Decolonization, Stephanie A Fritz, Todd N Wylie, Haley Gula, Patrick G Hogan, Mary G Boyle, Carol E Muenks, Melanie L Sullivan, Carey-Ann D Burnham, Kristine M Wylie Apr 2022

Longitudinal Dynamics Of Skin Bacterial Communities In The Context Of Staphylococcus Aureus Decolonization, Stephanie A Fritz, Todd N Wylie, Haley Gula, Patrick G Hogan, Mary G Boyle, Carol E Muenks, Melanie L Sullivan, Carey-Ann D Burnham, Kristine M Wylie

Open Access Publications

Decolonization with topical antimicrobials is frequently prescribed in health care and community settings to prevent Staphylococcus aureus infection. However, effects on commensal skin microbial communities remains largely unexplored. Within a household affected by recurrent methicillin-resistant S. aureus skin and soft tissue infections (SSTI), skin swabs were collected from the anterior nares, axillae, and inguinal folds of 14 participants at 1- to 3-month intervals over 24 months. Four household members experienced SSTI during the first 12-months (observational period) and were prescribed a 5-day decolonization regimen with intranasal mupirocin and bleach water baths at the 12-month study visit. We sequenced the 16S …


Structural And Molecular Rationale For The Diversification Of Resistance Mediated By The Antibiotic_Nat Family, Peter J Stogios, Emily Bordeleau, Zhiyu Xu, Tatiana Skarina, Elena Evdokimova, Sommer Chou, Luke Diorio-Toth, Alaric W D'Souza, Sanket Patel, Gautam Dantas, Gerard D Wright, Alexei Savchenko Mar 2022

Structural And Molecular Rationale For The Diversification Of Resistance Mediated By The Antibiotic_Nat Family, Peter J Stogios, Emily Bordeleau, Zhiyu Xu, Tatiana Skarina, Elena Evdokimova, Sommer Chou, Luke Diorio-Toth, Alaric W D'Souza, Sanket Patel, Gautam Dantas, Gerard D Wright, Alexei Savchenko

Open Access Publications

The environmental microbiome harbors a vast repertoire of antibiotic resistance genes (ARGs) which can serve as evolutionary predecessors for ARGs found in pathogenic bacteria, or can be directly mobilized to pathogens in the presence of selection pressures. Thus, ARGs from benign environmental bacteria are an important resource for understanding clinically relevant resistance. Here, we conduct a comprehensive functional analysis of the Antibiotic_NAT family of aminoglycoside acetyltransferases. We determined a pan-family antibiogram of 21 Antibiotic_NAT enzymes, including 8 derived from clinical isolates and 13 from environmental metagenomic samples. We find that environment-derived representatives confer high-level, broad-spectrum resistance, including against the atypical …