[Antibiotic sensitivity of staphylococci associated with adenoviruses]

Antibiotiki I Meditsinskaia Biotekhnologiia = Antibiotics and Medical Biotechnology
|February 1, 1985
PubMed

Insights

Adenoviruses significantly altered antibiotic sensitivity in staphylococcal strains, often increasing it. This effect demonstrated notable strain-specific variations in bacteria-virus interactions.

Area of Science:

  • Microbiology
  • Virology
  • Bacteriology

Background:

  • Staphylococcal infections pose significant public health challenges.
  • Understanding bacterial-viral interactions is crucial for developing novel therapeutic strategies.
  • Adenoviruses are common human viruses with potential to influence host-associated microbiota.

Purpose of the Study:

  • To investigate the impact of adenoviruses on the antibiotic sensitivity of staphylococcal strains.
  • To determine if this interaction exhibits strain specificity.
  • To explore potential mechanisms underlying observed changes in antibiotic sensitivity.

Main Methods:

  • Culturing 8 distinct staphylococcal strains in artificial bacterial-viral associations.
  • Exposing these associations to adenoviruses (serotypes 2 and 7).
  • Assessing antibiotic sensitivity profiles before and after viral contact using controlled experiments.

Main Results:

  • A general increase in antibiotic sensitivity was observed in staphylococcal strains post-adenovirus exposure.
  • The extent of sensitivity change varied significantly among different staphylococcal strains, indicating strain specificity.
  • Experimental data and literature review were used to hypothesize underlying causes and mechanisms.

Conclusions:

  • Adenovirus interaction can modulate staphylococcal antibiotic sensitivity.
  • Strain-specific responses highlight the complexity of host-microbe-virus dynamics.
  • Further research is warranted to elucidate the precise molecular mechanisms involved.

Related Concept Videos

Antibiotic Selection00:57

Antibiotic Selection

Overview
Development of Antibiotic Resistance01:30

Development of Antibiotic Resistance

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...
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...
Atypical Pneumonia01:14

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...
Mechanism of Antibiotic Resistance in MRSA01:25

Mechanism of Antibiotic Resistance in MRSA

Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
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...