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Related Concept Videos

Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Staphylococcal Skin Infections01:29

Staphylococcal Skin Infections

Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
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...
Antifungal Agents01:15

Antifungal Agents

Amphotericin B is a broad-spectrum antifungal agent that exploits structural differences between fungal and mammalian cell membranes. Its amphipathic structure—featuring a hydrophobic polyene-lactone ring and a hydrophilic region containing mycosamine and carboxylic acid groups—enables selective binding to ergosterol, a sterol predominantly found in fungal plasma membranes. This selective interaction underlies the drug’s antifungal activity, although weak binding to cholesterol contributes to...
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...
Antimicrobial Proteins01:23

Antimicrobial Proteins

Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...

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Related Experiment Video

Updated: Jun 26, 2026

Isolation of Lipoprotein Particles from Chicken Egg Yolk for the Study of Bacterial Pathogen Fatty Acid Incorporation into Membrane Phospholipids
11:59

Isolation of Lipoprotein Particles from Chicken Egg Yolk for the Study of Bacterial Pathogen Fatty Acid Incorporation into Membrane Phospholipids

Published on: May 15, 2019

Antistaphylococcal agents.

Howard S Gold1, Satish K Pillai

  • 1Silverman Institute for Health Care Quality and Safety, Division of Infectious Diseases, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, LMOB-6A, Boston, MA 02215, USA. hogold@caregroup.harvard.edu

Infectious Disease Clinics of North America
|January 13, 2009
PubMed
Summary
This summary is machine-generated.

New drugs offer hope against multidrug-resistant Staphylococcus aureus infections. This review details their mechanisms, resistance, clinical use, and toxicities, aiding treatment decisions for these challenging gram-positive cocci.

More Related Videos

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria
14:04

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria

Published on: May 8, 2013

Related Experiment Videos

Last Updated: Jun 26, 2026

Isolation of Lipoprotein Particles from Chicken Egg Yolk for the Study of Bacterial Pathogen Fatty Acid Incorporation into Membrane Phospholipids
11:59

Isolation of Lipoprotein Particles from Chicken Egg Yolk for the Study of Bacterial Pathogen Fatty Acid Incorporation into Membrane Phospholipids

Published on: May 15, 2019

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria
14:04

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria

Published on: May 8, 2013

Area of Science:

  • Infectious Diseases
  • Pharmacology
  • Microbiology

Background:

  • Shifting epidemiology of Staphylococcus aureus antibiotic resistance.
  • Changing prevalence of clinical syndromes potentially linked to strain virulence.
  • Emergence of new agents targeting multidrug-resistant gram-positive cocci.

Purpose of the Study:

  • To review the advantages and disadvantages of novel antistaphylococcal agents.
  • To provide essential information on new drugs for multidrug-resistant infections.

Main Methods:

  • Review of existing literature on antistaphylococcal agents.
  • Analysis of mechanisms of action and resistance.
  • Evaluation of clinical use, dosing, and supporting data.
  • Assessment of drug toxicities and interactions.

Main Results:

  • New agents show potential against multidrug-resistant Staphylococcus aureus.
  • Durability and comparative efficacy of new agents require further testing.
  • Detailed information on mechanisms, resistance, clinical use, and safety profiles is presented.

Conclusions:

  • The availability of new antistaphylococcal agents is timely for combating resistant infections.
  • A comprehensive understanding of these agents' properties is crucial for effective clinical application.
  • Further research is needed to fully establish the long-term efficacy and safety of these promising drugs.