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Yin J, Tong J, Li J, Shao G, Xie B, Zhuang J, Bi G, Mu Y. A portable, high-throughput real-time quantitative PCR device for point-of-care testing. Anal Biochem 2023:115200. [PMID: 37302776 DOI: 10.1016/j.ab.2023.115200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/15/2023] [Accepted: 05/28/2023] [Indexed: 06/13/2023]
Abstract
Nucleic acids detection has become essential in the identification of many infectious diseases and tumors. Conventional qPCR instruments are not suitable for point-of-care Moreover, current miniaturized nucleic acid detection equipment has limited throughput and multiplex detection capabilities, typically allowing the detection of a limited number of samples. Here, we present an affordable, portable, and high-throughput nucleic acid detection device for point-of-care detection. This portable device is approximately 220×165×140 mm in size and about 3 kg in weight. It can provide stable and accurate temperature control and analyze two fluorescent signals (FAM and VIC) and run 16 samples simultaneously. As a proof of concept, we used the two purified DNA samples from Bordetella pertussis and Canine parvovirus and the results showed good linearity and coefficient of variation. Moreover, this portable device can detect as low as 10 copies and has good specificity. Therefore, our device can provide advantages in real-time diagnosis of high-throughput nucleic acid detection in the field, especially for resource-limited conditions.
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Affiliation(s)
- Juxin Yin
- School of Information and Electrical Engineering, Hangzhou City University, Hangzhou, Zhejiang Province, 310015, China
| | - Jizhi Tong
- School of Information and Electrical Engineering, Hangzhou City University, Hangzhou, Zhejiang Province, 310015, China
| | - Jiale Li
- Research Centre for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, Zhejiang Province, 310027, China
| | - Guangye Shao
- Hang Zhou Techway Gene CO.LTD, Zhejiang Province, 310015, China
| | - Bo Xie
- Hang Zhou Techway Gene CO.LTD, Zhejiang Province, 310015, China
| | - Jianjian Zhuang
- Department of Clinical Pharmacology, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People's Hospital, Cancer Center, Zhejiang University School of Medicine, Hangzhou, 310006, China.
| | - Gang Bi
- School of Information and Electrical Engineering, Hangzhou City University, Hangzhou, Zhejiang Province, 310015, China.
| | - Ying Mu
- Research Centre for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, Zhejiang Province, 310027, China.
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Jie Z, Liu C, Xia D, Zhang G. An atmospheric microwave plasma-based distributed system for medical waste treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:51314-51326. [PMID: 36809622 PMCID: PMC9942016 DOI: 10.1007/s11356-023-25793-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 02/03/2023] [Indexed: 04/16/2023]
Abstract
Inadequate handling of infectious medical waste may promote the spread of the virus through secondary transmission during the transfer process. Microwave plasma, an ease-of-use, device-compact, and pollution-free technology, enables the on-site disposal of medical waste, thereby preventing secondary transmission. We developed atmospheric-pressure air-based microwave plasma torches with lengths exceeding 30 cm to rapidly treat various medical wastes in situ with nonhazardous exhaust gas. The gas compositions and temperatures throughout the medical waste treatment process were monitored by gas analyzers and thermocouples in real time. The main organic elements in medical waste and their residues were analyzed by an organic elemental analyzer. The results showed that (i) the weight reduction ratio of medical waste achieved a maximum value of 94%; (ii) a water-waste ratio of 30% was beneficial for enhancing the microwave plasma treatment effect for medical wastes; and (iii) substantial treatment effectiveness was achievable under a high feeding temperature (≥ 600 °C) and a high gas flow rate (≥ 40 L/min). Based on these results, we built a miniaturized and distributed pilot prototype for microwave plasma torch-based on-site medical waste treatment. This innovation could fill the gap in the field of small-scale medical waste treatment facilities and alleviate the existing issue of handling medical waste on-site.
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Affiliation(s)
- Ziyao Jie
- Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China
| | - Cheng Liu
- Research Institute for Environmental Innovation (Suzhou) Tsinghua, Suzhou, 215163, China
| | - Daolu Xia
- Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China
- Suqian Development and Reform Commission, Suqian, 223800, China
| | - Guixin Zhang
- Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China.
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Gangula A, Kim B, Casey B, Hamill A, Regunath H, Upendran A. Point-of-Care Testing of COVID-19: Current Status, Clinical Impact, and Future Therapeutic Perspectives. SPRINGERBRIEFS IN APPLIED SCIENCES AND TECHNOLOGY 2022:1-70. [DOI: 10.1007/978-981-19-4957-9_1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2025]
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