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Zhang D, Duan R, Liu J, Wang M, Yang Y, Zhao Y, Liu M, Sun S. Development and evaluation of time-resolved rapid immunofluorescence test for detection of TSOL18 specific antibody in porcine cysticercosis infections. BMC Vet Res 2024; 20:182. [PMID: 38720329 PMCID: PMC11077887 DOI: 10.1186/s12917-024-04034-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 04/24/2024] [Indexed: 05/12/2024] Open
Abstract
BACKGROUND Porcine cysticercosis, a serious zoonotic parasitic disease, is caused by the larvae of Taenia solium and has been acknowledged by the World Organization for Animal Health. The current detection methods of Cysticercus cellulosae cannot meet the needs of large-scale and rapid detection in the field. We hypothesized that the immunofluorescence chromatography test strip (ICS) for detecting Cysticercus cellulosae, according to optimization of a series of reaction systems was conducted, and sensitivity, specificity, and stability testing, and was finally compared with ELISA. This method utilizes Eu3+-labeled time-resolved fluorescent microspheres (TRFM) coupled with TSOL18 antigen to detect TSOL18 antibodies in infected pig sera. RESULTS ICS and autopsy have highly consistent diagnostic results (n = 133), as determined by Cohen's κ analysis (κ = 0.925). And the results showed that the proposed ICS are high sensitivity (0.9459) with specificity (0.9792). The ICS was unable to detect positive samples of other parasites. It can be stored for at least six months at 4℃. CONCLUSIONS In summary, we established a TRFM-ICS method with higher sensitivity and specificity than indirect ELISA. Results obtained from serum samples can be read within 10 min, indicating a rapid, user-friendly test suitable for large-scale field detection.
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Affiliation(s)
- Dejia Zhang
- College of Animal Science and Technology, Inner Mongolia MinZu University, Tongliao, 028000, China
| | - Rui Duan
- College of Animal Science and Technology, Inner Mongolia MinZu University, Tongliao, 028000, China
| | - Jing Liu
- Qingdao Special Servicemen Recuperation Center of PLA Navy, Qingdao, 266071, China
| | - Mengqi Wang
- College of Animal Science and Technology, Inner Mongolia MinZu University, Tongliao, 028000, China
| | - Yi Yang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, 650201, China
| | - Yongjun Zhao
- College of Animal Science and Technology, Inner Mongolia MinZu University, Tongliao, 028000, China
| | - Mingyuan Liu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225000, China.
| | - Shumin Sun
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, 650201, China.
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Ma X, Zhang H, Fang Y, Wang J, Wang X, Li C, Liu X, Liu M, Tang B, Liu Y. A point-of-care testing assay for clonorchiasis using a EuNPs-CsTR1 fluorescent probe-based immunoassay. PLoS Negl Trop Dis 2024; 18:e0012107. [PMID: 38656957 PMCID: PMC11073783 DOI: 10.1371/journal.pntd.0012107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 05/06/2024] [Accepted: 03/27/2024] [Indexed: 04/26/2024] Open
Abstract
Clonorchis sinensis is one of the most important fish-borne zoonotic parasitic worms in humans, and is distributed in several countries with more than 15 million people infected globally. However, the lack of a point-of-care testing (POCT) method is still the critical barrier to effectively prevent clonorchiasis. With the application of novel fluorescent nanomaterials, the development of on-site testing methods with high signal enhancement can provide a simple, precise and inexpensive tool for disease detection. In this study, Eu-(III) nanoparticles (EuNPs) were used as indicative probes, combined with C. sinensis tandem repeat sequence 1 (CSTR1) antigen to capture specific antibodies. Afterward, the complex binds to mouse anti-human IgG immobilized on the test line (T-line) producing a fluorescent signal under UV light. The EuNPs-fluorescent immunoassay (EuNPs-FIA) was successfully constructed, allowing sample detection within 10 min. It enabled both qualitative determination with the naked eye under UV light and quantitative detection by scanning the fluorescence intensity on the test line and control line (C-line). A total of 133 clinical human sera (74 negative, 59 clonorchiasis, confirmed by conventional Kato-Katz (KK) methods and PCR via testing fecal samples corresponding to each serum sample) were used in this study. For qualitative analysis, the cut-off value of fluorescence for positive serum was 31.57 by testing 74 known negative human samples. The assay had no cross-reaction with other 9 parasite-infected sera, and could recognize the mixed infection sera of C. sinensis and other parasites. The sensitivity and specificity of EuNPs-FIA were both 100% compared with KK smear method. Taking advantage of its high precision and user-friendly procedure, the established EuNPs-FIA provides a powerful tool for the diagnosis and epidemiological survey of clonorchiasis.
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Affiliation(s)
- Xiaoxiao Ma
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Huiyuan Zhang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Yiming Fang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Jing Wang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Xingyang Wang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Chen Li
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Xiaolei Liu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Mingyuan Liu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Bin Tang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Yi Liu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
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Li M, Ge H, Sun Z, Fu J, Cao L, Feng X, Meng G, Peng Y, Liu Y, Zhao C. A loop-mediated isothermal amplification-enabled analytical assay for the detection of SARS-CoV-2: A review. Front Cell Infect Microbiol 2022; 12:1068015. [PMID: 36619749 PMCID: PMC9816412 DOI: 10.3389/fcimb.2022.1068015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
The number of words: 4645, the number of figures: 4, the number of tables: 1The outbreak of COVID-19 in December 2019 caused a global pandemic of acute respiratory disease, and with the increasing virulence of mutant strains and the number of confirmed cases, this has resulted in a tremendous threat to global public health. Therefore, an accurate diagnosis of COVID-19 is urgently needed for rapid control of SARS-CoV-2 transmission. As a new molecular biology technology, loop-mediated isothermal amplification (LAMP) has the advantages of convenient operation, speed, low cost and high sensitivity and specificity. In the past two years, rampant COVID-19 and the continuous variation in the virus strains have demanded higher requirements for the rapid detection of pathogens. Compared with conventional RT-PCR and real-time RT-PCR methods, genotyping RT-LAMP method and LAMP plus peptide nucleic acid (PNA) probe detection methods have been developed to correctly identified SARS-CoV-2 variants, which is also why LAMP technology has attracted much attention. LAMP detection technology combined with lateral flow assay, microfluidic technology and other sensing technologies can effectively enhance signals by nucleic acid amplification and help to give the resulting output in a faster, more convenient and user-friendly way. At present, LAMP plays an important role in the detection of SARS-CoV-2.
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Affiliation(s)
- Mingna Li
- College of public health, Jilin Medical University, Jilin, China,College of medical technology, Beihua University, Jilin, China
| | - Hongjuan Ge
- College of public health, Jilin Medical University, Jilin, China
| | - Zhe Sun
- College of public health, Jilin Medical University, Jilin, China,College of medical technology, Beihua University, Jilin, China
| | - Jangshan Fu
- College of public health, Jilin Medical University, Jilin, China
| | - Lele Cao
- College of public health, Jilin Medical University, Jilin, China
| | - Xinrui Feng
- College of public health, Jilin Medical University, Jilin, China,Medical college, Yanbian University, Jilin, China
| | - Guixian Meng
- College of medical laboratory, Jilin Medical University, Jilin, China
| | - Yubo Peng
- Business School, The University of Adelaide, Adelaide, SA, Australia
| | - Yan Liu
- College of public health, Jilin Medical University, Jilin, China,*Correspondence: Yan Liu, ; Chen Zhao,
| | - Chen Zhao
- College of public health, Jilin Medical University, Jilin, China,*Correspondence: Yan Liu, ; Chen Zhao,
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Wang X, Li A, Wang R, Hou T, Chen H, Wang J, Liu M, Li C, Ding J. Lateral flow immunoassay strips based on europium(III) chelate microparticle for the rapid and sensitive detection of Trichinella spiralis infection in whole blood samples of pigs. Front Cell Infect Microbiol 2022; 12:955974. [PMID: 36017365 PMCID: PMC9395740 DOI: 10.3389/fcimb.2022.955974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 07/15/2022] [Indexed: 11/13/2022] Open
Abstract
Trichinellosis is a major food-borne parasitosis caused by ingesting raw or semi-raw meat products from pigs infected with Trichinella spiralis (T. spiralis). Although China is the largest consumer of pork in the world, the current diagnostic method of T. spiralis is exclusively performed in a laboratory setting, due to its complexity and laborious procedure. Here, in order to solve the detection problems in the pig breeding industry, a rapid, sensitive, and on-site serological diagnosis method was developed. The novel lateral flow immunoassay strip (ICS) is based on europium(III) chelate microparticle (ECM) to detect T. spiralis-specific IgG antibody in the serum and whole blood samples from pigs. The structure of the blood-filtering pad and the conjugate pad was added to the ICS, allowing for whole blood samples to be detected and enabling on-site deployment. By comparing the detection results of the serum samples and the whole blood samples, the detection limit of this method was evaluated. Thereafter, this method was used to investigate Trichinella infection in Chongqing, Sichuan, Inner Mongolia, Guangxi, and Liaoning provinces of China, and the results were almost consistent with the standard method of artificial digestion. Taking advantage of its user-friendly procedure, short detection time (3 min), and sensitivity, the ECM-ICS could be employed for monitoring the epidemic of Trichinella infection and ensuring meat safety.
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Affiliation(s)
- Xinyu Wang
- Key Laboratory for Zoonoses Research, Ministry of Education, Institute of Zoonoses, College of Veterinary Medicine, OIE Collaborating Center on Foodborne Parasites in Asian-Pacific Region, Jilin University, Changchun, China
| | - Aizhe Li
- Key Laboratory for Zoonoses Research, Ministry of Education, Institute of Zoonoses, College of Veterinary Medicine, OIE Collaborating Center on Foodborne Parasites in Asian-Pacific Region, Jilin University, Changchun, China
| | - Ruizhe Wang
- Key Laboratory for Zoonoses Research, Ministry of Education, Institute of Zoonoses, College of Veterinary Medicine, OIE Collaborating Center on Foodborne Parasites in Asian-Pacific Region, Jilin University, Changchun, China
| | - Tianji Hou
- Key Laboratory for Zoonoses Research, Ministry of Education, Institute of Zoonoses, College of Veterinary Medicine, OIE Collaborating Center on Foodborne Parasites in Asian-Pacific Region, Jilin University, Changchun, China
| | - Huixin Chen
- Key Laboratory for Zoonoses Research, Ministry of Education, Institute of Zoonoses, College of Veterinary Medicine, OIE Collaborating Center on Foodborne Parasites in Asian-Pacific Region, Jilin University, Changchun, China
| | - Jing Wang
- Key Laboratory for Zoonoses Research, Ministry of Education, Institute of Zoonoses, College of Veterinary Medicine, OIE Collaborating Center on Foodborne Parasites in Asian-Pacific Region, Jilin University, Changchun, China
| | - Mingyuan Liu
- Key Laboratory for Zoonoses Research, Ministry of Education, Institute of Zoonoses, College of Veterinary Medicine, OIE Collaborating Center on Foodborne Parasites in Asian-Pacific Region, Jilin University, Changchun, China
- Changchun Institute of Biological Products Co., Ltd., Changchun, China
| | - Chen Li
- Key Laboratory for Zoonoses Research, Ministry of Education, Institute of Zoonoses, College of Veterinary Medicine, OIE Collaborating Center on Foodborne Parasites in Asian-Pacific Region, Jilin University, Changchun, China
- *Correspondence: Chen Li, ; Jing Ding,
| | - Jing Ding
- Key Laboratory for Zoonoses Research, Ministry of Education, Institute of Zoonoses, College of Veterinary Medicine, OIE Collaborating Center on Foodborne Parasites in Asian-Pacific Region, Jilin University, Changchun, China
- *Correspondence: Chen Li, ; Jing Ding,
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Research on Rapid Detection Technology for β2-Agonists: Multi-Residue Fluorescence Immunochromatography Based on Dimeric Artificial Antigen. Foods 2022; 11:foods11060863. [PMID: 35327285 PMCID: PMC8949518 DOI: 10.3390/foods11060863] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/27/2022] [Accepted: 03/12/2022] [Indexed: 02/01/2023] Open
Abstract
To detect two types of β2-agonist residues at the same time, we coupled two haptens of clenbuterol (CLE) and ractopamine (RAC) to the same carrier protein through diazotization to prepare dimeric artificial antigen, and a fluorescent lateral flow immunoassay method based on europium nanoparticles (EuNP-FLFIA) was established by combining polyclonal antibodies with europium nanoparticles to form probes. Under optimized conditions, the EuNP-FLFIA could simultaneously detect eight aniline-type and one phenol-type β2-agonists, and the limits of detection (LOD) were 0.11−0.19 ng/mL and 0.12 ng/mL, respectively. The recovery rate of this method was 84.00−114.00%. This method was verified by liquid chromatography−tandem mass spectrometry (LC-MS/MS), and the test results were consistent (R2 > 0.98). Therefore, the method established in this study could be used as a high-throughput screening for the efficient and sensitive detection of β2-agonists in food.
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Immunoprotective effects of invasive Lactobacillus plantarum delivered nucleic acid vaccine coexpressing Trichinella spiralis CPF1 and murine interleukin-4. Vet Parasitol 2021; 298:109556. [PMID: 34419708 DOI: 10.1016/j.vetpar.2021.109556] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Trichinellosis is a very important food-borne parasitic disease, that seriously endangers animal husbandry and food safety. Therefore, it is necessary to develop a safe and effective vaccine against Trichinella spiralis infection. In this experiment, invasive Lactobacillus plantarum carrying the FnBPA gene served as a live bacterial vector to deliver nucleic acids to the host to produce a novel oral nucleic acid vaccine. Coexpression of the T. spiralis cathepsin F-like protease 1 gene (TsCPF1) and murine IL-4 (mIL-4) by the nucleic acid vaccine was constructed and subsequently delivered to intestinal epithelial cells via invasive L. plantarum. Thirty-seven days after the first immunization, the experimental mice were challenged with 350 T. spiralis infective larvae by oral gavage. The results showed that mice orally immune-stimulated with invasive L. plantarum pValac-TsCPF1/pSIP409-FnBPA not only produce anti-TsCPF1-specific IgG antibodies, sIgA, Th1/Th2 cytokine distinctly increased but also intestinal damage and worm burden relieved compare to non-invasive TsCPF1 group (pValac-TsCPF1/pSIP409). Most notably, experimental mice immunized with invasive L. plantarum coexpressing TsCPF1 and mIL-4 (pValac-TsCPF1-IL-4/pSIP409-FnBPA) exhibited the highest protection efficiency against T. spiralis infection. The above results reveal that invasive L. plantarum-expressing the FnBPA protein improved mucosal and cellular immunity and enhanced resistance to T. spiralis. The nucleic acid vaccine delivered by invasive L. plantarum described in this study offers a novel idea for the prevention of T. spiralis.
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