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Related Concept Videos

Inhibitors of Bacterial Protein Synthesis01:25

Inhibitors of Bacterial Protein Synthesis

Aminoglycosides constitute a highly potent class of bactericidal antibiotics that exert their antimicrobial effects by targeting the bacterial ribosome, specifically disrupting protein synthesis. These polycationic molecules consist of amino-modified sugars linked via glycosidic bonds to an aminocyclitol core such as 2-deoxystreptamine or streptamine. Their strong positive charges facilitate tight binding to the negatively charged phosphate backbone of ribosomal RNA (rRNA), primarily at the 16S...
Antibiotic Selection00:57

Antibiotic Selection

Overview
Inhibitors of Bacterial DNA Synthesis01:28

Inhibitors of Bacterial DNA Synthesis

Bacterial pathogens depend on precise and efficient DNA replication to sustain infection. Two type II topoisomerases—DNA gyrase and topoisomerase IV—are critical to this process, as they resolve DNA supercoiling and unlink chromosomes during replication. Fluoroquinolones, synthetic derivatives of quinolones, exploit this mechanism by stabilizing the transient DNA–enzyme cleavage complex, preventing strand religation, and causing lethal double-strand breaks. These antibiotics are selectively...
Inhibitors of Gram-positive Cell Wall Synthesis01:23

Inhibitors of Gram-positive Cell Wall Synthesis

Bacterial cell walls are typically rigid structures composed mainly of peptidoglycan, a mesh-like polymer that provides mechanical strength and maintains cell shape. The synthesis of peptidoglycan is a crucial process in bacterial growth and serves as a primary target for many antibiotics.Mechanism of Action of Beta-Lactam AntibioticsBeta-lactam antibiotics, such as penicillin, inhibit peptidoglycan synthesis in actively growing cells. These antibiotics share a characteristic four-membered...
Positive Regulator Molecules02:39

Positive Regulator Molecules

Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.

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Related Experiment Video

Updated: Jun 25, 2026

A Tetracycline-regulated Cell Line Produces High-titer Lentiviral Vectors that Specifically Target Dendritic Cells
16:04

A Tetracycline-regulated Cell Line Produces High-titer Lentiviral Vectors that Specifically Target Dendritic Cells

Published on: June 19, 2013

Tigecycline.

M Bhattacharya1, A Parakh, M Narang

  • 1Department of Pediatrics, Maulana Azad Medical College and Lok Nayak Hospital, New Delhi-110 002, India. drmalvikab@gmail.com

Journal of Postgraduate Medicine
|February 27, 2009
PubMed
Summary
This summary is machine-generated.

Tigecycline is a novel antibiotic effective against many drug-resistant bacteria, including MRSA and VRE. It offers a valuable treatment option for serious infections where other therapies have failed.

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Antibiotic Dereplication Using the Antibiotic Resistance Platform

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Last Updated: Jun 25, 2026

A Tetracycline-regulated Cell Line Produces High-titer Lentiviral Vectors that Specifically Target Dendritic Cells
16:04

A Tetracycline-regulated Cell Line Produces High-titer Lentiviral Vectors that Specifically Target Dendritic Cells

Published on: June 19, 2013

Applying an Inducible Expression System to Study Interference of Bacterial Virulence Factors with Intracellular Signaling
08:51

Applying an Inducible Expression System to Study Interference of Bacterial Virulence Factors with Intracellular Signaling

Published on: June 25, 2015

Antibiotic Dereplication Using the Antibiotic Resistance Platform
10:49

Antibiotic Dereplication Using the Antibiotic Resistance Platform

Published on: October 17, 2019

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Pharmacology

Background:

  • Infections caused by antibiotic-resistant pathogens pose significant clinical, microbiological, and economic challenges.
  • There is a critical need for new antimicrobial agents to treat serious hospital-acquired infections.

Purpose of the Study:

  • To evaluate the efficacy and spectrum of activity of tigecycline, a novel glycylcycline antimicrobial.
  • To highlight tigecycline's role in treating infections caused by multi-drug resistant organisms.

Main Methods:

  • The abstract describes tigecycline's broad-spectrum activity against various resistant pathogens.
  • It notes limitations in activity against specific bacterial species (Proteus, Providencia, Pseudomonas).

Main Results:

  • Tigecycline demonstrates broad-spectrum antibacterial activity, including against methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE).
  • Approved indications include complicated skin and skin structure infections and complicated intra-abdominal infections.
  • Efficacy has also been observed in pneumonia, bacteremia, sepsis with shock, and urinary tract infections.

Conclusions:

  • Tigecycline is a valuable treatment option for infections caused by 'superbugs', particularly when conventional therapies are ineffective.
  • Its expanded spectrum makes it a crucial tool in managing challenging multi-drug resistant infections.