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Updated: Nov 6, 2025
Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria
Published on: May 8, 2013
Exploring the possible targeting strategies of liposomes against methicillin-resistant Staphylococcus aureus (MRSA)
Nur Najihah Izzati Mat Rani1, Zahraa Mustafa Hussein2, Fahimi Mustapa3
1Centre for Drug Delivery Technology, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia; Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, 30450 Ipoh, Perak, Malaysia.
Abstract:
Multi antibiotic-resistant bacterial infections are on the rise due to the overuse of antibiotics. Methicillin-resistant Staphylococcus aureus (MRSA) is one of the pathogens listed under the category of serious threats where vancomycin remains the mainstay treatment despite the availability of various antibacterial agents. Recently, decreased susceptibility to vancomycin from clinical isolates of MRSA has been reported and has drawn worldwide attention as it is often difficult to overcome and leads to increased medical costs, mortality, and longer hospital stays. Development of antibiotic delivery systems is often necessary to improve bioavailability and biodistribution, in order to reduce antibiotic resistance and increase the lifespan of antibiotics. Liposome entrapment has been used as a method to allow higher drug dosing apart from reducing toxicity associated with drugs. The surface of the liposomes can also be designed and enhanced with drug-release properties, active targeting, and stealth effects to prevent recognition by the mononuclear phagocyte system, thus enhancing its circulation time. The present review aimed to highlight the possible targeting strategies of liposomes against MRSA bacteremia systemically while investigating the magnitude of this effect on the minimum inhibitory concentration level.
Insights
Liposomes offer a promising strategy to combat rising antibiotic resistance, particularly against Methicillin-resistant Staphylococcus aureus (MRSA) infections. This approach enhances vancomycin delivery, potentially improving treatment outcomes for difficult-to-treat bacterial infections.
Area of Science:
- Pharmacology and Pharmaceutics
- Infectious Diseases
- Biotechnology
Background:
- Increasing prevalence of multi-antibiotic-resistant bacterial infections, notably Methicillin-resistant Staphylococcus aureus (MRSA).
- Vancomycin is a critical treatment for MRSA, but decreasing susceptibility poses a significant global health threat.
- Challenges in treating MRSA infections include increased mortality, prolonged hospital stays, and escalating healthcare costs.
Purpose of the Study:
- To review and highlight liposome-based targeting strategies for systemic delivery against MRSA bacteremia.
- To investigate the impact of liposomal drug delivery on the minimum inhibitory concentration (MIC) of antibiotics.
- To explore methods for enhancing antibiotic bioavailability, biodistribution, and circulation time to combat resistance.
Main Methods:
- Review of existing literature on liposome entrapment and surface modification techniques.
- Analysis of strategies for active targeting, stealth effects, and controlled drug release from liposomes.
- Investigation into the potential of liposomes to improve vancomycin efficacy against MRSA.
Main Results:
- Liposome entrapment allows for higher drug dosing and reduced systemic toxicity.
- Liposome surface engineering can enhance drug release, active targeting, and prolong circulation time by evading the mononuclear phagocyte system.
- Targeted liposomal delivery systems show potential for improved therapeutic outcomes against MRSA bacteremia.
Conclusions:
- Liposomes represent a viable strategy to overcome antibiotic resistance and improve the effectiveness of existing antibiotics like vancomycin.
- Targeted liposomal delivery systems can enhance antibiotic efficacy and potentially reduce the development of further resistance.
- Further research into liposomal formulations is crucial for developing advanced treatments for challenging bacterial infections.
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