Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

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...
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...
Pharmacokinetic–Pharmacodynamic Relationship: Influence of Elimination Half-Life on Effect Duration01:23

Pharmacokinetic–Pharmacodynamic Relationship: Influence of Elimination Half-Life on Effect Duration

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 half-life.
Aryldiazonium Salts to Azo Dyes: Diazo Coupling01:11

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the para position.
Combined Effects of Drugs: Synergism01:27

Combined Effects of Drugs: Synergism

Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Anti-PEG antibodies in nanomedicine: Mechanisms, risks, and opportunities.

Advanced drug delivery reviews·2026
Same author

Systems serology identifies FcR-related autoantibody signatures and functions for Sjögren's syndrome.

EMBO molecular medicine·2026
Same author

The Strategic Plan for Tuberculosis Elimination and Equity in Australia 2026-2030.

Communicable diseases intelligence (2018)·2026
Same author

Atypical B cells and inflammatory profiles delineate immunity to influenza vaccination in First Nations and non-Indigenous people with chronic multimorbidity.

Nature communications·2026
Same author

High-dimensional multiomics reveals perturbations to IL-6/IL-6R axis and RUNX3 in CD4<sup>+</sup> T cells during third-trimester pregnancy.

Clinical & translational immunology·2026
Same author

Immune responses associated with protection from SARS-CoV-2 infection.

Vaccine·2026
Same journal

Non-occupational post-exposure prophylaxis does not expand or differentiate candidates for pre-exposure prophylaxis.

Sexual health·2026
Same journal

Disparities in HIV/STI testing and diagnosis by population groups, geography, and age in Victoria, Australia.

Sexual health·2026
Same journal

Design and methods of the Third Australian Study of Health and Relationships (ASHR3): a nationally representative sexual and reproductive health survey.

Sexual health·2026
Same journal

Female orgasm frequency, correlates and measurement in the preconception period.

Sexual health·2026
Same journal

Risk perceptions of chlamydia and gonorrhoea among Dutch youth prior to a new sexually transmitted infection testing policy: a cross-sectional survey study.

Sexual health·2026
Same journal

Priorities to eliminate congenital syphilis in Australia: findings from a national roundtable.

Sexual health·2026
See all related articles

Related Experiment Video

Updated: May 13, 2026

High Throughput, Real-time, Dual-readout Testing of Intracellular Antimicrobial Activity and Eukaryotic Cell Cytotoxicity
09:09

High Throughput, Real-time, Dual-readout Testing of Intracellular Antimicrobial Activity and Eukaryotic Cell Cytotoxicity

Published on: November 16, 2016

Azithromycin: more lethal than chloramphenicol?

Ivan Stratov1, Justin Denholm, Stephen J Kent

  • 1Department of Microbiology and Immunology, University of Melbourne, Melbourne, Vic. 3010, Australia.

Sexual Health
|March 2, 2013
PubMed
Summary
This summary is machine-generated.

Low-dose azithromycin use is common in sexual health and respiratory medicine. This analysis critiques a study linking azithromycin to cardiovascular death, examining conflicting evidence from multiple research types.

More Related Videos

Metabolic Profiling to Determine Bactericidal or Bacteriostatic Effects of New Natural Products using Isothermal Microcalorimetry
07:28

Metabolic Profiling to Determine Bactericidal or Bacteriostatic Effects of New Natural Products using Isothermal Microcalorimetry

Published on: October 29, 2020

A Robust Pneumonia Model in Immunocompetent Rodents to Evaluate Antibacterial Efficacy against S. pneumoniae, H. influenzae, K. pneumoniae, P. aeruginosa or A. baumannii
09:17

A Robust Pneumonia Model in Immunocompetent Rodents to Evaluate Antibacterial Efficacy against S. pneumoniae, H. influenzae, K. pneumoniae, P. aeruginosa or A. baumannii

Published on: January 2, 2017

Related Experiment Videos

Last Updated: May 13, 2026

High Throughput, Real-time, Dual-readout Testing of Intracellular Antimicrobial Activity and Eukaryotic Cell Cytotoxicity
09:09

High Throughput, Real-time, Dual-readout Testing of Intracellular Antimicrobial Activity and Eukaryotic Cell Cytotoxicity

Published on: November 16, 2016

Metabolic Profiling to Determine Bactericidal or Bacteriostatic Effects of New Natural Products using Isothermal Microcalorimetry
07:28

Metabolic Profiling to Determine Bactericidal or Bacteriostatic Effects of New Natural Products using Isothermal Microcalorimetry

Published on: October 29, 2020

A Robust Pneumonia Model in Immunocompetent Rodents to Evaluate Antibacterial Efficacy against S. pneumoniae, H. influenzae, K. pneumoniae, P. aeruginosa or A. baumannii
09:17

A Robust Pneumonia Model in Immunocompetent Rodents to Evaluate Antibacterial Efficacy against S. pneumoniae, H. influenzae, K. pneumoniae, P. aeruginosa or A. baumannii

Published on: January 2, 2017

Area of Science:

  • Pharmacology
  • Cardiovascular Medicine
  • Infectious Disease

Background:

  • Azithromycin is frequently prescribed for presumptive diagnoses in sexual health and respiratory conditions.
  • A recent study suggested a link between low-dose azithromycin and cardiovascular death, particularly in high-risk patients.
  • This critique examines the methodology and findings of the aforementioned study.

Discussion:

  • Conflicting data from randomized controlled trials (RCTs) and observational studies are analyzed.
  • Animal studies investigating azithromycin's cardiovascular effects are considered.
  • The potential mechanisms linking azithromycin to adverse cardiovascular events are explored.

Key Insights:

  • The initial study's findings regarding azithromycin-associated cardiovascular death require careful interpretation due to conflicting evidence.
  • Existing data from RCTs and observational studies do not consistently support a causal link.
  • Further research is needed to clarify the precise cardiovascular risk profile of azithromycin.

Outlook:

  • Re-evaluation of azithromycin's cardiovascular safety is warranted, considering diverse data sources.
  • Clinical guidelines may need refinement based on a comprehensive understanding of azithromycin's risks and benefits.
  • Future research should focus on elucidating specific patient populations or conditions where azithromycin might pose a cardiovascular risk.