Comparison of Different Antibiotic Medications on Microorganisms: An Original Research

Ruthika S Patil1, Pradeep Onteru2, Janmajay Jena3

  • 1Prosthodontics, Research Student Worker, Kornberg School of Dentistry, Temple University, Philadelphia, United States.

Abstract

Insights

This study evaluated common antibiotics against E. coli and Lactobacillus. Antibiotic effectiveness varied by microorganism and concentration, indicating a need for further research into resistance mechanisms.

Area of Science:

  • Microbiology
  • Pharmacology

Background:

  • Microbial imbalance in the oral cavity can lead to disease.
  • Antibiotics are commonly used to combat pathogenic microorganisms.

Purpose of the Study:

  • To assess the in vitro antibacterial activity of commonly used antibiotics against E. coli and Lactobacillus.
  • To compare the efficacy of Augmentin (CV), Ceftriaxone-Cephalosporin (CF), and Linezolid against these microorganisms.

Main Methods:

  • An in vitro agar-well diffusion method was employed.
  • The Radius of Zone of Inhibition (RZI) was measured after 24 and 48 hours.
  • Antibiotics tested included Augmentin (CV), Ceftriaxone-Cephalosporin (CF), and Linezolid at concentrations of 5 μl and 2.5 μl.

Main Results:

  • For E. coli, RZI ranged from 0.8-1.4 mm, consistent across concentrations and time points.
  • For Lactobacillus, RZI varied between 0.5-1.8 mm, showing differences based on antibiotic and concentration.
  • Antibiotic efficacy demonstrated variability depending on the specific organism and drug concentration used.

Conclusions:

  • The study confirmed the antibacterial action of tested antibiotics against E. coli and Lactobacillus.
  • Findings suggest that antibiotic efficacy is organism- and concentration-dependent.
  • Further investigation into antibiotic resistance mechanisms in these organisms is warranted.