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Clinical Significance of Antibiotic Resistance

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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...

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Updated: Jun 5, 2026

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria

Published on: May 8, 2013

Methicillin-resistant Staphylococcus aureus: a pervasive pathogen highlights the need for new antimicrobial

Emily A Morell¹, Daniel M Balkin

¹Harvard Medical School/Castle Society, Boston, Massachusetts 02115, USA. emily_morell@hms.harvard.edu

The Yale Journal of Biology and Medicine

|December 18, 2010

Summary

Methicillin-resistant Staphylococcus aureus (MRSA) is a growing global threat, causing both hospital and community infections. Urgent development of new antibiotics is critical due to increasing resistance.

Keywords:

10x‘20 initiative Staphylococcus aureus antibiotic development antibiotic resistance community-associated MRSA methicillin-resistant Staphylococcus aureus penicillin penicillin-binding proteins virulence factors

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Last Updated: Jun 5, 2026

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria

Published on: May 8, 2013

Area of Science:

Microbiology
Infectious Diseases
Public Health

Background:

Staphylococcus aureus (S. aureus) is a significant pathogen, with its drug-resistant form, methicillin-resistant S. aureus (MRSA), becoming globally pervasive.
MRSA infections have transitioned from primarily hospital-acquired to widespread community-acquired, posing a substantial public health burden.
S. aureus possesses diverse virulence factors and immune evasion strategies, including surface proteins, secreted enzymes, and toxins.

Purpose of the Study:

To highlight the increasing prevalence and public health impact of MRSA infections.
To underscore the critical need for renewed efforts in developing novel antibiotics against resistant bacterial strains.

Main Methods:

Analysis of historical and current infection data for S. aureus and MRSA.
Review of S. aureus virulence mechanisms and immune evasion strategies.

Main Results:

MRSA proportion of S. aureus infections in ICUs rose from 2% in 1974 to 64% in 2004.
Community prevalence of MRSA has also significantly increased.
Development of new antibiotics against resistant bacteria has lagged behind the emergence of resistance.

Conclusions:

The escalating incidence of MRSA necessitates an urgent revival in the search for new and effective antibiotics.
Addressing the growing threat of antibiotic resistance requires a concerted global effort in antimicrobial research and development.