Karen E. Beenken

High Impact

Associate Professor

UAMS

Last publication 2026 Last refreshed 2026-05-22

faculty

beenkenkarene@uams.edu

31 h-index 70 pubs 4,235 cited

Research Areas

Links

ORCID Lab Website UAMS TRI Profile

OverviewAI-generated summary

Karen E. Beenken's research focuses on the pathogenesis of *Staphylococcus aureus* infections, particularly osteomyelitis. Her work investigates the role of bacterial virulence factors and host responses in disease progression. She has explored the mechanisms by which *Staphylococcus aureus* regulates protease production, including the significant role of the *sarA* gene in limiting extracellular protease activity. This regulation is linked to reduced virulence in clinical isolates relevant to osteomyelitis. Beenken also examines how mutations, such as in the *purR* gene, can lead to increased accumulation of virulence factors and altered protease production, impacting disease outcomes.

Her laboratory studies the host's contribution to bone loss during *Staphylococcus aureus* osteomyelitis, specifically investigating the requirement of RANKL-mediated osteoclast formation. Furthermore, Beenken evaluates potential therapeutic strategies, such as the use of bone filler scaffolds for local antibiotic delivery to prevent or treat *Staphylococcus aureus* infections in contaminated bone defects. Her scholarship metrics include an h-index of 31 and over 4,000 citations, reflecting a significant body of work in her field. She has received federal funding from the NIH/National Institute of Allergy and Infectious Diseases for her research on post-translational regulation by extracellular proteases in osteomyelitis pathogenesis.

Metrics

h-index: 31
Publications: 70
Citations: 4,235

Selected Publications

Lipolysis of host triacylglyceride-rich lipoproteins creates a toxic microenvironment for Staphylococcus aureus (2026)

DOI OpenAlex
Staphylococcus aureus Biofilm-Associated Infections: Have We Found a Clinically Relevant Target? (2025)

11 citations DOI OpenAlex
Staphylococcus aureus Proteins Implicated in the Reduced Virulence of sarA and sarA/agr Mutants in Osteomyelitis (2025)

5 citations DOI OpenAlex
The ability of sarA to limit protease production plays a key role in the pathogenesis of Staphylococcus aureus osteomyelitis irrespective of the functional status of agr (2024)

10 citations DOI OpenAlex
RANKL-mediated osteoclast formation is required for bone loss in a murine model of Staphylococcus aureus osteomyelitis (2024)

14 citations DOI OpenAlex
Increased production of aureolysin and staphopain A is a primary determinant of the reduced virulence of Staphylococcus aureus sarA mutants in osteomyelitis (2024)

11 citations DOI OpenAlex
Comparative evaluation of small molecules reported to be inhibitors of Staphylococcus aureus biofilm formation (2023)

6 citations DOI OpenAlex
The major role of sarA in limiting Staphylococcus aureus extracellular protease production in vitro is correlated with decreased virulence in diverse clinical isolates in osteomyelitis (2023)

14 citations DOI OpenAlex
The major role of sarA in limiting Staphylococcus aureus extracellular protease production is correlated with decreased virulence in diverse clinical isolates in osteomyelitis (2022)

DOI OpenAlex
Evaluation of a bone filler scaffold for local antibiotic delivery to prevent Staphylococcus aureus infection in a contaminated bone defect (2021)

21 citations DOI OpenAlex
Limiting protease production plays a key role in the pathogenesis of the divergent clinical isolates of Staphylococcus aureus LAC and UAMS-1 (2021)

15 citations DOI OpenAlex
The Increased Accumulation of Staphylococcus aureus Virulence Factors Is Maximized in a purR Mutant by the Increased Production of SarA and Decreased Production of Extracellular Proteases (2021)

12 citations DOI OpenAlex
Staphylococcal infection prevention using antibiotic‐loaded mannitol–chitosan paste in a rabbit model of implant‐associated osteomyelitis (2021)

5 citations DOI OpenAlex