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Updated: Aug 8, 2025

Capturing Actively Produced Microbial Volatile Organic Compounds from Human-Associated Samples with Vacuum-Assisted Sorbent Extraction
Published on: June 1, 2022
Current Limitations of Staph Infection Diagnostics, and the Role for VOCs in Achieving Culture-Independent Detection
Carrie L Jenkins1,2, Heather D Bean1,3
1School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA.
Abstract:
Staphylococci are broadly adaptable and their ability to grow in unique environments has been widely established, but the most common and clinically relevant staphylococcal niche is the skin and mucous membranes of mammals and birds. S. aureus causes severe infections in mammalian tissues and organs, with high morbidities, mortalities, and treatment costs. S. epidermidis is an important human commensal but is also capable of deadly infections. Gold-standard diagnostic methods for staph infections currently rely upon retrieval and characterization of the infectious agent through various culture-based methods. Yet, obtaining a viable bacterial sample for in vitro identification of infection etiology remains a significant barrier in clinical diagnostics. The development of volatile organic compound (VOC) profiles for the detection and identification of pathogens is an area of intensive research, with significant efforts toward establishing breath tests for infections. This review describes the limitations of existing infection diagnostics, reviews the principles and advantages of VOC-based diagnostics, summarizes the analytical tools for VOC discovery and clinical detection, and highlights examples of how VOC biomarkers have been applied to diagnosing human and animal staph infections.
Insights
Volatile organic compounds (VOCs) offer a novel approach to detect staph infections, overcoming limitations of traditional culture-based diagnostics. This review explores VOC biomarkers for identifying staphylococcal pathogens in humans and animals.
Area of Science:
- Microbiology and Infectious Diseases
- Analytical Chemistry
- Biomarker Discovery
Background:
- Staphylococci, including *S. aureus* and *S. epidermidis*, are common causes of severe mammalian infections.
- Current gold-standard diagnostics rely on culture-based methods, which face challenges in obtaining viable bacterial samples.
- This presents a significant barrier in timely and accurate clinical diagnosis of staphylococcal infections.
Purpose of the Study:
- To review the limitations of current staph infection diagnostic methods.
- To explore the principles, advantages, and analytical tools for volatile organic compound (VOC)-based diagnostics.
- To highlight the application of VOC biomarkers in diagnosing human and animal staph infections.
Main Methods:
- Review of existing literature on staphylococcal infections and diagnostic techniques.
- Summary of analytical instrumentation and methodologies for VOC discovery and detection.
- Compilation of case studies and examples of VOC biomarker application in staph diagnostics.
Main Results:
- Identified significant limitations in traditional culture-based methods for staph infection diagnosis.
- Detailed the potential of VOC profiling as a non-invasive diagnostic approach.
- Showcased successful examples of VOC biomarkers for detecting staphylococcal pathogens.
Conclusions:
- VOC-based diagnostics represent a promising advancement over conventional methods for staph infection detection.
- Further research and development in VOC analysis can lead to improved clinical diagnostic tools.
- VOC biomarkers offer a viable strategy for identifying staphylococcal infections in both human and veterinary medicine.
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