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The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
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Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
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Drug elimination from the body primarily occurs through metabolic and excretion pathways. Hepatic metabolism transforms lipophilic drugs into hydrophilic forms for excretion, typically via enzymatic processes classified as phase I (modification) and phase II (conjugation). Renal excretion eliminates drugs and metabolites through filtration and secretion in the kidneys. Impairment in liver or kidney function can hinder these processes, delaying drug clearance and extending the drug’s...
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Antibiotic efficacy-context matters.

Jason H Yang1, Sarah C Bening1, James J Collins2

  • 1Institute for Medical Engineering & Science, Department of Biological Engineering, Synthetic Biology Center, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA; Broad Institute of MIT and Harvard, 415 Main St, Cambridge, MA 02142, USA.

Current Opinion in Microbiology
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Summary
This summary is machine-generated.

Antibiotic lethality involves complex cellular processes influenced by environmental factors. Systems approaches reveal how metabolism, translation, and DNA damage contribute to bacterial death, impacting antibiotic efficacy.

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Area of Science:

  • Microbiology
  • Systems Biology
  • Pharmacology

Background:

  • Antibiotic lethality is a complex process influenced by bacterial physiology and environmental cues.
  • Recent systems biology approaches reveal downstream events critical to antibiotic-induced cell death.

Purpose of the Study:

  • To review recent studies on antibiotic efficacy and lethality.
  • To highlight the role of cellular respiration, redox stress, and metabolism in antibiotic lethality.
  • To identify knowledge gaps addressable by systems approaches.

Main Methods:

  • Review of recent scientific literature.
  • Analysis of systems approaches in understanding antibiotic lethality.
  • Discussion of environmental factors influencing antibiotic efficacy.

Main Results:

  • Altered metabolism, translational stress, and DNA damage are key contributors to antibiotic-induced cell death.
  • Environmental factors like oxygen availability and population heterogeneity modulate antibiotic efficacy.
  • Cellular respiration and redox stress are significantly involved in antibiotic lethality.

Conclusions:

  • Antibiotic lethality is a multifaceted process influenced by internal cellular events and external environmental conditions.
  • Systems approaches provide valuable insights into the complex mechanisms of antibiotic lethality.
  • Further research using systems approaches is needed to address knowledge gaps in antibiotic lethality.