Related Experiment Video
Updated: Jun 29, 2025
Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing
Published on: June 1, 2012
Reactive Microneedle Patches with Antibacterial and Dead Bacteria-Trapping Abilities for Skin Infection Treatment
Jingyang Shan1,2, Xiangyi Wu1, Junyi Che1
1Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
Abstract:
Bacterial skin infections are highly prevalent and pose a significant public health threat. Current strategies are primarily focused on the inhibition of bacterial activation while disregarding the excessive inflammation induced by dead bacteria remaining in the body and the effect of the acidic microenvironment during therapy. In this study, a novel dual-functional MgB2 microparticles integrated microneedle (MgB2 MN) patch is presented to kill bacteria and eliminate dead bacteria for skin infection management. The MgB2 microparticles not only can produce a local alkaline microenvironment to promote the proliferation and migration of fibroblasts and keratinocytes, but also achieve >5 log bacterial inactivation. Besides, the MgB2 microparticles effectively mitigate dead bacteria-induced inflammation through interaction with lipopolysaccharide (LPS). With the incorporation of these MgB2 microparticles, the resultant MgB2 MN patches effectively kill bacteria and capture dead bacteria, thereby mitigating these bacteria-induced inflammation. Therefore, the MgB2 MN patches show good therapeutic efficacy in managing animal bacterial skin infections, including abscesses and wounds. These results indicate that reactive metal borides-integrated microneedle patches hold great promise for the treatment of clinical skin infections.
Insights
This study introduces a novel MgB2 microneedle patch that effectively kills bacteria and clears dead bacteria. This dual-action approach treats bacterial skin infections by reducing inflammation and promoting healing.
Area of Science:
- Biomaterials Science
- Dermatology
- Infectious Diseases
Background:
- Bacterial skin infections are a major public health concern.
- Current treatments overlook inflammation from dead bacteria and acidic environments.
- A novel approach is needed for comprehensive skin infection management.
Purpose of the Study:
- To develop and evaluate a dual-functional Magnesium Diboride (MgB2) microparticle-integrated microneedle (MN) patch.
- To assess the patch's efficacy in killing bacteria, eliminating dead bacteria, and mitigating inflammation.
- To investigate the patch's therapeutic potential for bacterial skin infections.
Main Methods:
- Fabrication of MgB2 microparticles integrated into microneedle patches.
- Evaluation of MgB2 microparticles' antibacterial activity (>5 log inactivation).
- Assessment of MgB2's ability to create an alkaline microenvironment and interact with lipopolysaccharide (LPS).
- Testing the MgB2 MN patch efficacy in animal models of bacterial skin infections (abscesses, wounds).
Main Results:
- MgB2 microparticles achieved significant bacterial inactivation.
- An alkaline microenvironment was produced, promoting fibroblast and keratinocyte activity.
- Dead bacteria-induced inflammation was effectively mitigated via LPS interaction.
- MgB2 MN patches demonstrated therapeutic efficacy in treating abscesses and wounds in animal models.
Conclusions:
- MgB2 MN patches offer a dual-action strategy for bacterial skin infections.
- The patches effectively kill bacteria, clear dead bacteria, and reduce inflammation.
- Reactive metal borides integrated into microneedle patches show promise for clinical skin infection treatment.
More Related Videos
Related Concept Videos
01:30Bacterial Signaling
01:31Defense Against Bacterial Pathogens
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...