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Automated Microbial Diagnostics

Automated Microbial Diagnostics

Automated diagnostic analyzers have transformed clinical microbiology by providing rapid and reliable methods for pathogen identification and antibiotic susceptibility testing. Among these systems, the Vitek 2 is widely used because it automates the traditionally labor-intensive processes of microbial identification (ID) and antibiotic susceptibility testing (AST), delivering standardized and timely results that are essential for effective patient care.Microbial Identification with ID CardsThe...

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Author Spotlight: Development of a Smartphone-Enhanced Paper-Based Device for Rapid Dengue NS1 Detection

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Nanoplasmonic Rapid Antimicrobial-Resistance Point-of-Care Identification Device: RAPIDx.

Jong-Hwan Lee^1,2, Jihwan Song³, SoonGweon Hong^1,4

¹Department of Bioengineering, University of California Berkeley, Berkeley, CA, 94720, USA.

Advanced Healthcare Materials

|August 29, 2024

Summary

This summary is machine-generated.

A new device, the rapid antimicrobial-resistance point-of-care identification device (RAPIDx), accurately identifies bacterial species and antibiotic resistance in under 45 minutes. This breakthrough aids in combating the global health crisis of untreatable infections.

Keywords:

antimicrobial resistance diagnostics plasmonics rolling circle amplification (RCA)urinary tract infections (UTIs)

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Area of Science:

Biotechnology
Nanotechnology
Medical Diagnostics

Background:

Antibiotic resistance is a growing global health crisis, leading to untreatable infections.
The lack of rapid, precise point-of-care diagnostic tools hinders effective antibiotic use.
Current methods are insufficient for timely identification of bacterial pathogens and their resistance mechanisms.

Purpose of the Study:

To develop a rapid, accurate, and simultaneous method for identifying bacterial species and antibiotic resistance at the point of care.
To address the limitations of existing diagnostic assays for combating antimicrobial resistance.
To introduce a novel on-chip nanotechnology approach for bioassays.

Main Methods:

Development of the rapid antimicrobial-resistance point-of-care identification device (RAPIDx).
Utilizing photothermal lysis on a nanoplasmonic layer for contamination-free enzyme extraction.
Employing photonic rolling circle amplification for rapid DNA identification of pathogens.
Integrating genotype (bacterial species) and phenotype (enzyme activity) identification.

Main Results:

The RAPIDx device successfully achieved simultaneous identification of bacterial species and target enzyme activity.
Accurate results were obtained within a 45-minute sample-to-answer timeframe.
Demonstrated the feasibility of on-chip nanotechnology for antibiotic-resistant bioassays.

Conclusions:

The RAPIDx device offers a valuable solution for the bottleneck in diagnosing antibiotic resistance.
This technology can significantly improve the management of infectious diseases.
Enables faster and more precise clinical decisions regarding antibiotic treatment.