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Li J, Fan W, Zou X, Dai X, Zhao Y, Pan H, Wu S, Li X, Huang H. Clinical evaluation of polymerase chain reaction coupled with quantum dot fluorescence analysis in the identification of bacteria and yeasts in patients with suspected bloodstream infections. Microb Biotechnol 2023; 16:827-837. [PMID: 36722318 PMCID: PMC10034622 DOI: 10.1111/1751-7915.14226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 12/18/2022] [Accepted: 01/16/2023] [Indexed: 02/02/2023] Open
Abstract
Bloodstream infections are serious and complex infectious diseases that often require a rapid diagnosis. Polymerase chain reaction coupled with quantum dot fluorescence analysis (PCR-QDFA) is a novel diagnostic technique. This study aimed to evaluate the diagnostic performance of PCR-QDFA for pathogen detection in patients with suspected bloodstream infections (BSIs). It evaluates 29 kinds of common pathogens (24 bacteria and 5 yeasts) from blood culture bottles. The results of PCR-QDFA identification and traditional microbial laboratory identification were compared, and the latter was used as the 'gold standard' to analyse the diagnostic performance of the PCR-QDFA. In total, 517 blood culture bottles were included in this study. The PCR-QDFA identified microorganisms in 368/422 (87.2%) samples with monomicrobial growth. For the pathogens on the PCR-QDFA list, the assay showed a higher sensitivity of 97.4% (368/378). When polymicrobial growth was analysed, the PCR-QDFA successfully detected 19/25 (76%) microorganisms on the PCR-QDFA list. In addition, 82/82 negative blood culture bottles also showed no pathogens by PCR-QDFA with a specificity of 100%. In conclusion, the PCR-QDFA assay could identify a majority of the common pathogens encountered in clinical practice, showing excellent diagnostic performance for pathogen detection in patients with suspected BSIs.
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Affiliation(s)
- Jie Li
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Wenjia Fan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Xuehan Zou
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Xuan Dai
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Yueyue Zhao
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Hongying Pan
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Shijin Wu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Xi Li
- Centre of Laboratory Medicine, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Haijun Huang
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
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Cui J, Zhou M, Li Y, Liang Z, Li Y, Yu L, Liu Y, Liang Y, Chen L, Yang C. A New Optical Fiber Probe-Based Quantum Dots Immunofluorescence Biosensors in the Detection of Staphylococcus aureus. Front Cell Infect Microbiol 2021; 11:665241. [PMID: 34136417 PMCID: PMC8203335 DOI: 10.3389/fcimb.2021.665241] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 05/10/2021] [Indexed: 12/16/2022] Open
Abstract
Staphylococcus aureus (S. aureus) is one of the most common clinical pathogenic bacteria with strong pathogenicity and usually leads to various suppurative infections with high fatality. Traditional bacterial culture for the detection of S. aureus is prone to diagnosis and antimicrobial treatment delays because of its long-time consumption and low sensitivity. In this study, we successfully developed a quantum dots immunofluorescence biosensor for S. aureus detection. The biosensor combined the advantages of biosensors with the high specificity of antigen-antibody immune interactions and the high sensitivity and stability of quantum dots fluorescence. The results demonstrated that the biosensor possessed high specificity and high sensitivity for S. aureus detection. The detection limit of S. aureus reached 1 × 104 CFU/ml or even 1 × 103 CFU/ml, and moreover, the fluorescence intensity had a significant positive linear correlation relationship with the logarithm of the S. aureus concentration in the range of 103–107 CFU/ml (correlation coefficient R2 = 0.9731, P = 0.011). A specificity experiment showed that this biosensor could effectively distinguish S. aureus (1 × 104 CFU/ml and above) from other common pathogenic (non-S. aureus) bacteria in nosocomial infections, such as Klebsiella pneumoniae, Pseudomonas aeruginosa, Acinetobacter baumannii and Escherichia coli. Additionally, the whole detection procedure spent only 2 h. In addition, the biosensor in this study may not be affected by the interference of the biofilm or other secretions since the clinical biological specimens are need to be fully liquefied to digest and dissolve viscous secretions such as biofilms before the detection procedure of the biosensor in this study. In conclusion, the biosensor could meet the need for rapid and accurate S. aureus detection for clinical application.
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Affiliation(s)
- Jiewei Cui
- Department of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital, Beijing, China
| | - Minjuan Zhou
- Laser Institute, Qilu University of Technology (Shandong Academy of Sciences), Qingdao, China.,State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing, China
| | - Ying Li
- Department of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital, Beijing, China.,Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Zhixin Liang
- Department of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital, Beijing, China
| | - Yanqin Li
- Department of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital, Beijing, China
| | - Ling Yu
- Department of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital, Beijing, China
| | - Yang Liu
- Department of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital, Beijing, China
| | - Yuan Liang
- Department of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital, Beijing, China
| | - Liangan Chen
- Department of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital, Beijing, China
| | - Changxi Yang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing, China
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Kailasa SK, Cheng KH, Wu HF. Semiconductor Nanomaterials-Based Fluorescence Spectroscopic and Matrix-Assisted Laser Desorption/Ionization (MALDI) Mass Spectrometric Approaches to Proteome Analysis. MATERIALS (BASEL, SWITZERLAND) 2013; 6:5763-5795. [PMID: 28788422 PMCID: PMC5452753 DOI: 10.3390/ma6125763] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 10/14/2013] [Accepted: 10/18/2013] [Indexed: 12/14/2022]
Abstract
Semiconductor quantum dots (QDs) or nanoparticles (NPs) exhibit very unusual physico-chemcial and optical properties. This review article introduces the applications of semiconductor nanomaterials (NMs) in fluorescence spectroscopy and matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) for biomolecule analysis. Due to their unique physico-chemical and optical properties, semiconductors NMs have created many new platforms for investigating biomolecular structures and information in modern biology. These semiconductor NMs served as effective fluorescent probes for sensing proteins and cells and acted as affinity or concentrating probes for enriching peptides, proteins and bacteria proteins prior to MALDI-MS analysis.
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Affiliation(s)
- Suresh Kumar Kailasa
- Department of Chemistry, S. V. National Institute of Technology, Surat 395007, India.
| | - Kuang-Hung Cheng
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
| | - Hui-Fen Wu
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
- Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 806, Taiwan.
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