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Davis EH, Jones C, Coward K. Rethinking the application of nanoparticles in women's reproductive health and assisted reproduction. Nanomedicine (Lond) 2024. [PMID: 38686941 DOI: 10.2217/nnm-2023-0346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024] Open
Abstract
Nanoparticles and nanotechnology may present opportunities to revolutionize the prevention, treatment and diagnosis of a range of reproductive health conditions in women. These technologies are also used to improve outcomes of assisted reproductive technology. We highlight a range of these potential clinical uses of nanoparticles for polycystic ovary syndrome, endometriosis, uterine fibroids and sexually transmitted infections, considering in vitro and in vivo studies along with clinical trials. In addition, we discuss applications of nanoparticles in assisted reproductive technology, including sperm loading, gamete and embryo preservation and preventing preterm birth. Finally, we present some of the concerns associated with the medical use of nanoparticles, identifying routes for further exploration before nanoparticles can be applied to women's reproductive health in the clinic.
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Affiliation(s)
- Emily Hs Davis
- Nuffield Department of Women's & Reproductive Health, University of Oxford, Women's Centre, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom
| | - Celine Jones
- Nuffield Department of Women's & Reproductive Health, University of Oxford, Women's Centre, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom
| | - Kevin Coward
- Nuffield Department of Women's & Reproductive Health, University of Oxford, Women's Centre, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom
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Rodriguez-Mateos P, Ngamsom B, Ameyo D, Wakaba P, Shiluli C, Iles A, Gitaka J, Pamme N. Integrated microscale immiscible phase extraction and isothermal amplification for colorimetric detection of Neisseria gonorrhoeae. Anal Bioanal Chem 2023:10.1007/s00216-023-04734-3. [PMID: 37198361 PMCID: PMC10191819 DOI: 10.1007/s00216-023-04734-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 05/04/2023] [Accepted: 05/04/2023] [Indexed: 05/19/2023]
Abstract
Gonorrhea is the second most common sexually transmitted infection (STI) with around 87 million cases worldwide estimated in 2016 by the World Health Organization. With over half of the cases being asymptomatic, potential life-threatening complications and increasing numbers of drug-resistant strains, routine monitoring of prevalence and incidence of infections are key preventive measures. Whilst gold standard qPCR tests have excellent accuracy, they are neither affordable nor accessible in low-resource settings. In this study, we developed a lab-on-a-chip platform based on microscale immiscible filtration to extract, concentrate and purify Neisseria gonorrhoeae DNA with an integrated detection assay based on colorimetric isothermal amplification. The platform was capable of detecting as low as 500 copies/mL from spiked synthetic urine and showed no cross-reactivity when challenged with DNAs from other common STIs. The credit card-size device allows DNA extraction and purification without power or centrifuges, and the detection reaction only needs a low-tech block heater, providing a straightforward and visual positive/negative result within 1 h. These advantages offer great potential for accurate, affordable and accessible monitoring of gonorrhea infection in resource-poor settings.
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Affiliation(s)
- Pablo Rodriguez-Mateos
- Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden
| | - Bongkot Ngamsom
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, UK
| | - Daglus Ameyo
- Directorate of Research and Innovation, Mount Kenya University, Thika, Kenya
| | - Patrick Wakaba
- Directorate of Research and Innovation, Mount Kenya University, Thika, Kenya
| | - Clement Shiluli
- Directorate of Research and Innovation, Mount Kenya University, Thika, Kenya
| | - Alexander Iles
- Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden
| | - Jesse Gitaka
- Directorate of Research and Innovation, Mount Kenya University, Thika, Kenya.
| | - Nicole Pamme
- Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden.
- School of Natural Sciences, University of Hull, Hull, UK.
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Chen X, Zhou Q, Yuan W, Shi Y, Dong S, Luo X. Visual and rapid identification of Chlamydia trachomatis and Neisseria gonorrhoeae using multiplex loop-mediated isothermal amplification and a gold nanoparticle-based lateral flow biosensor. Front Cell Infect Microbiol 2023; 13:1067554. [PMID: 36926514 PMCID: PMC10011439 DOI: 10.3389/fcimb.2023.1067554] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 02/15/2023] [Indexed: 03/08/2023] Open
Abstract
Sexually transmitted chlamydia and gonorrhea infections caused by the bacteria Chlamydia trachomatis and Neisseria gonorrhoeae remain a major public health concern worldwide, particularly in less developed nations. It is crucial to use a point of care (POC) diagnostic method that is quick, specific, sensitive, and user-friendly to treat and control these infections effectively. Here, a novel molecular diagnostic assay, combining multiplex loop-mediated isothermal amplification (mLAMP) with a visual gold nanoparticles-based lateral flow biosensor (AuNPs-LFB) was devised and used for highly specific, sensitive, rapid, visual, and easy identification of C. trachomatis and N. gonorrhoeae. Two unique independent primer pairs were successful designed against the ompA and orf1 genes of C. trachomatis and N. gonorrhoeae, respectively. The optimal mLAMP-AuNPs-LFB reaction conditions were determined to be 67°C for 35 min. The detection procedure, involving crude genomic DNA extraction (~5 min), LAMP amplification (35 min), and visual results interpretation (<2 min), can be completed within 45 min. Our assay has a detection limit of 50 copies per test, and we did not observe any cross-reactivity with any other bacteria in our testing. Hence, our mLAMP-AuNPs-LFB assay can potentially be used for POC testing to detect C. trachomatis and N. gonorrhoeae in clinical settings, particularly in underdeveloped regions.
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Affiliation(s)
- Xu Chen
- The Second Clinical College, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, China
- Clinical Medical Laboratory of the Second Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, China
- *Correspondence: Xinhua Luo, ; Shilei Dong, ; Xu Chen,
| | - Qingxue Zhou
- Clinical Laboratory, Hangzhou Women’s Hospital, Hangzhou, Zhejiang, China
| | - Wei Yuan
- Department of Quality Control, Guizhou Provincial Center for Clinical Laboratory, Guiyang, Guizhou, China
| | - Yuanfang Shi
- The Second Clinical College, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, China
| | - Shilei Dong
- Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou, Zhejiang, China
- *Correspondence: Xinhua Luo, ; Shilei Dong, ; Xu Chen,
| | - Xinhua Luo
- Department of Infectious Disease, Guizhou Provincial People’s Hospital, Guiyang, Guizhou, China
- *Correspondence: Xinhua Luo, ; Shilei Dong, ; Xu Chen,
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Zhou Q, Yu R, Xia D, Liu J, Xu W, Yin Y. Diagnosis of Neisseria Gonorrhoeae by Loop-Mediated Isothermal Amplification: Systematic Review and Meta-Analysis. Indian J Microbiol 2022; 62:428-433. [PMID: 35974909 PMCID: PMC9375793 DOI: 10.1007/s12088-022-01013-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/22/2022] [Indexed: 11/05/2022] Open
Abstract
Neisseria gonorrhoeae (gonococci) is the pathogen of gonorrhea. At present, there is no robust statistical analysis targeting the detection accuracy for N.gonorrhoeae of loop-mediated isothermal amplification (LAMP). We performed a full search of five databases for studies using the LAMP method to detect N.gonorrhoeae in this study. Nine datasets derived from eight studies satisfying the inclusion requirement were collected for this study. The pooled sensitivity rate and specificity were calculated as 98.53 and 99.49%. The pooled positive likelihood ratio (PLR), negative likelihood ratio (NLR) and diagnostic odds ratio (DOR) were 66.0, 0.04 and 1863.8. After plotting the summary receiver operating characteristic (sROC), the area under the curve (AUC) and Q* index was calculated as 0.99 and 0.9774. Subgroup analyses based on the type of samples, location, and gold standard did not find sources of significant heterogeneity. In conclusion, the LAMP method could be an effective and convenient method with high accuracy for the clinical detection of N.gonorrhoeae. Moreover, the confirmation of this finding needs more high-quality studies with regional data and large samples.
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Affiliation(s)
- Qian Zhou
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu, China
| | - Ruixing Yu
- Department of Dermatology, China-Japan Friendship Hospital, Beijing, China
| | - Deju Xia
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu, China
| | - Jingwei Liu
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu, China
| | - Wenqi Xu
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu, China
| | - Yueping Yin
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu, China
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Zhang E, Ou H, Jia L, Zhang W, Wang Y, Wang X. Comparative analysis of loop-mediated isothermal amplification combined with microfluidic chip technology and q-PCR in the detection of clinical infectious pathogens. J Clin Lab Anal 2022; 36:e24565. [PMID: 35754145 PMCID: PMC9396168 DOI: 10.1002/jcla.24565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 05/15/2022] [Accepted: 06/07/2022] [Indexed: 11/07/2022] Open
Abstract
Background Rapid diagnosis of infectious pathogens at an early stage is crucial to stabilize the patient's condition, reduce medical costs, and shorten hospital stays. Currently, some point‐of‐care tests have their own shortcomings. Therefore, we built a microfluidic chip based on loop‐mediated isothermal amplification to can quickly and sensitively detect infectious pathogens. Methods We extracted the DNA of S. aureus, MRSA, Shigella and Klebsiella pneumoniae. Then, the DNA samples were diluted by 10‐fold and examined by two methods: LAMP‐microfluidic chip and q‐PCR, the sensitivity of whom was also compared. In addition, the specificity of the two was also examined by detecting the target bacteria and other microorganisms using the same methods. Finally, we extracted and tested the DNA of clinically infected humoral samples to determine the coincidence rate between the two methods and the bacterial culture method. Results For S. aureus, MRSA, Shigella, and Klebsiella pneumoniae, the detection limits of the chip were 2.25 × 103 copies/μl, 5.32 × 103 copies/μl, 2.89 × 103 copies/μl, 6.53 × 102 copies/μl, and the detection limits of q‐PCR were 2.25 × 102 copies/μl, 5.32 × 101 copies/μl, 2.89 × 102 copies/μl, 6.53 × 101 copies/μl, respectively. In terms of detection specificity, neither method cross‐reacted with other strains. For the detection of infectious humoral samples, the total coincidence rate between the q‐PCR and bacterial culture method was 85.7%, 95%, 95%, and 95.5%, and the total coincidence rate between the chip and bacterial culture method was 81%, 95%, 90%, and 86.4%, respectively. Conclusion LAMP‐microfluidic chip provides a simple, sensitive, specific, convenient, and rapid pathogen detection method for clinically infected humoral samples without relying on expensive equipment or technical personnels.
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Affiliation(s)
- Enqi Zhang
- The Postgraduate Training Base of Jinzhou Medical University (The PLA Rocket Force Characteristic Medical Center), Beijing, China
| | - Hongling Ou
- Department of Clinical Laboratory, The PLA Rocket Force Characteristic Medical Center, Beijing, China
| | - Lianling Jia
- Department of Clinical Laboratory, The PLA Rocket Force Characteristic Medical Center, Beijing, China
| | - Wang Zhang
- Department of Clinical Laboratory, The PLA Rocket Force Characteristic Medical Center, Beijing, China
| | - Yemei Wang
- The Postgraduate Training Base of Jinzhou Medical University (The PLA Rocket Force Characteristic Medical Center), Beijing, China
| | - Xinru Wang
- Department of Clinical Laboratory, The PLA Rocket Force Characteristic Medical Center, Beijing, China
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Priya K, Rathinasabapathi P, Arunraj R, Sugapriya D, Ramya M. Development of multiplex HRM-based loop-mediated isothermal amplification method for specific and sensitive detection of Treponema pallidum. Arch Microbiol 2022; 204:355. [PMID: 35648234 DOI: 10.1007/s00203-022-02973-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 04/25/2022] [Accepted: 05/11/2022] [Indexed: 11/25/2022]
Abstract
Syphilis is a sexually transmitted disease caused by the spirochaete bacterium Treponema pallidum. This study has developed a multiplex High-Resolution Melt-curve Loop-mediated isothermal amplification (multiplex HRM-LAMP) assay targeting the marker genes polA and tprL to detect T. pallidum. The multiplex HRM-LAMP assay conditions were optimized at 65 °C for 45 min. Real-time melt-curve analysis of multiplex HRM-LAMP shows two melt-curve peaks corresponding to polA and tprL with a Tm value of 80 ± 0.5 °C and 87 ± 0.5 °C, respectively. The detection limit of multiplex HRM-LAMP was found to be 6.4 × 10-4 ng/μL (3.79 copies/μL) of T. pallidum. The specificity was evaluated using seven different bacterial species, and the developed method was 100% specific in detecting T. pallidum. A total of 64 blood samples of T. pallidum suspected cases were used to validate the assay method. The clinical validation showed that the assay was 96.43% sensitive and 100% specific in detecting syphilis. Thus, the developed method was more rapid and sensitive than other available methods and provides a multigene-based diagnostic approach to detect T. pallidum.
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Affiliation(s)
- Krishnamoorthy Priya
- Molecular Genetics Laboratory, Department of Genetic Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, Kanchipuram District, Chennai, Tamil Nadu, 603203, India
| | - Pasupathi Rathinasabapathi
- Molecular Genetics Laboratory, Department of Genetic Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, Kanchipuram District, Chennai, Tamil Nadu, 603203, India
| | - Rex Arunraj
- Molecular Genetics Laboratory, Department of Genetic Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, Kanchipuram District, Chennai, Tamil Nadu, 603203, India
| | - Dhanasekaran Sugapriya
- Department of Medical Laboratory (Pathology), College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Wadi-Al Dawaser, 11451, Riyadh, Saudi Arabia
| | - Mohandass Ramya
- Molecular Genetics Laboratory, Department of Genetic Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, Kanchipuram District, Chennai, Tamil Nadu, 603203, India.
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Shen JN, Ye JY, Lao MX, Wang CQ, Wu DH, Chen XY, Lin LH, Geng WY, Guo XG. Evaluation of the real-time fluorescence loop-mediated isothermal amplification assay for the detection of Ureaplasma urealyticum. AMB Express 2022; 12:16. [PMID: 35147799 PMCID: PMC8837760 DOI: 10.1186/s13568-022-01357-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 01/29/2022] [Indexed: 11/21/2022] Open
Abstract
Ureaplasma urealyticum (UU) is commonly present in human reproductive tract, which frequently leads to genital tract infection. Hence, there is an urgent need to develop a rapid detection method for UU. In our study, a real-time fluorescence loop-mediated isothermal amplification (LAMP) assay was developed and evaluated for the detection of UU. Two primers were specifically designed based on the highly conserved regions of ureaseB genes. The reaction was carried out for 60 min in a constant temperature system using Bst DNA polymerase, and the process was monitored by real-time fluorescence signal, while polymerase chain reaction (PCR) was performed simultaneously. In real-time fluorescence LAMP reaction system, positive result was only obtained for UU among 9 bacterial strains, with detection sensitivity of 42 pg/μL (4.2 × 105 CFU/mL), and all 16 clinical samples of UU could be detected. In conclusion, real-time fluorescence LAMP is a simple, sensitive, specific and effective method compared with conventional PCR, which shows great promise in the rapid detection of UU.
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Hsieh K, Melendez JH, Gaydos CA, Wang TH. Bridging the gap between development of point-of-care nucleic acid testing and patient care for sexually transmitted infections. LAB ON A CHIP 2022; 22:476-511. [PMID: 35048928 PMCID: PMC9035340 DOI: 10.1039/d1lc00665g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The incidence rates of sexually transmitted infections (STIs), including the four major curable STIs - chlamydia, gonorrhea, trichomoniasis and, syphilis - continue to increase globally, causing medical cost burden and morbidity especially in low and middle-income countries (LMIC). There have seen significant advances in diagnostic testing, but commercial antigen-based point-of-care tests (POCTs) are often insufficiently sensitive and specific, while near-point-of-care (POC) instruments that can perform sensitive and specific nucleic acid amplification tests (NAATs) are technically complex and expensive, especially for LMIC. Thus, there remains a critical need for NAAT-based STI POCTs that can improve diagnosis and curb the ongoing epidemic. Unfortunately, the development of such POCTs has been challenging due to the gap between researchers developing new technologies and healthcare providers using these technologies. This review aims to bridge this gap. We first present a short introduction of the four major STIs, followed by a discussion on the current landscape of commercial near-POC instruments for the detection of these STIs. We present relevant research toward addressing the gaps in developing NAAT-based STI POCT technologies and supplement this discussion with technologies for HIV and other infectious diseases, which may be adapted for STIs. Additionally, as case studies, we highlight the developmental trajectory of two different POCT technologies, including one approved by the United States Food and Drug Administration (FDA). Finally, we offer our perspectives on future development of NAAT-based STI POCT technologies.
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Affiliation(s)
- Kuangwen Hsieh
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA.
| | - Johan H Melendez
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Charlotte A Gaydos
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Tza-Huei Wang
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA.
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD 21218, USA
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High-Resolution Melting Analysis to Detect Antimicrobial Resistance Determinants in South African Neisseria gonorrhoeae Clinical Isolates and Specimens. Int J Microbiol 2022; 2022:9094328. [PMID: 35087590 PMCID: PMC8789472 DOI: 10.1155/2022/9094328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 01/06/2022] [Indexed: 12/02/2022] Open
Abstract
Background Antimicrobial resistance is limiting treatment options for Neisseria gonorrhoeae infections. To aid or replace culture and the syndromic management approach, molecular assays are required for antimicrobial susceptibility testing to guide appropriate and rapid treatment. Objective We aimed to detect single-nucleotide polymorphisms and plasmids associated with antimicrobial resistance from N. gonorrhoeae isolates from a clinic population in South Africa, using real-time PCR as a rapid test for AMR detection. Methods N. gonorrhoeae isolates, from female and male patients presenting for care at a sexually transmitted infections clinic in Durban, South Africa, were analysed using phenotypic and genotypic methods for identification and antibiotic susceptibility testing (AST). Real-time PCR and high-resolution melting analysis were used to detect porA pseudogene (species-specific marker) and resistance-associated targets. Whole-genome sequencing was used as the gold standard for the presence of point mutations. Results The real-time porA pseudogene assay identified all N. gonorrhoeae-positive isolates and specimens. Concordance between molecular detection (real-time PCR and HRM) and resistance phenotype was ≥92% for blaTEM (HLR penicillin), rpsJ_V57M (tetracycline), tetM (tetracycline), and gyrA_S91F (ciprofloxacin). Resistance determinants 16SrRNA_C1192U (spectinomycin), mtrR_G45D (azithromycin), and penA_D545S, penA_mosaic (cefixime/ceftriaxone) correlated with the WHO control isolates. Conclusions Eight resistance-associated targets correlated with phenotypic culture results. The porA pseudogene reliably detected N. gonorrhoeae. Larger cohorts are required to validate the utility of these targets as a convenient culture-free diagnostic tool, to guide STI management in a South African population.
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John AJ, He PJ, Katis IN, Galanis P, Iles AH, Eason RW, Sones CL. Capillary-based reverse transcriptase loop-mediated isothermal amplification for cost-effective and rapid point-of-care COVID-19 testing. Anal Chim Acta 2021; 1185:339002. [PMID: 34711332 PMCID: PMC8406210 DOI: 10.1016/j.aca.2021.339002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 07/28/2021] [Accepted: 08/26/2021] [Indexed: 12/15/2022]
Abstract
As the SARS-CoV-2 pandemic continues to spread, the necessity for rapid, easy diagnostic capabilities could never have been more crucial. With this aim in mind, we have developed a cost-effective and time-saving testing methodology/strategy that implements a sensitive reverse transcriptase loop-mediated amplification (RT-LAMP) assay within narrow, commercially available and cheap, glass capillaries for detection of the SARS-CoV-2 viral RNA. The methodology is compatible with widely used laboratory-based molecular testing protocols and currently available infrastructure. It employs a simple rapid extraction protocol that lyses the virus, releasing sufficient genetic material for amplification. This extracted viral RNA is then amplified using a SARS-CoV-2 RT-LAMP kit, at a constant temperature and the resulting amplified product produces a colour change which can be visually interpreted. This testing protocol, in conjunction with the RT-LAMP assay, has a sensitivity of ∼100 viral copies per reaction of a sample and provides results in a little over 30 min. As the assay is carried out in a water bath, commonly available within most testing laboratories, it eliminates the need for specialised instruments and associated skills. In addition, our testing pathway requires a significantly reduced quantity of reagents per test while providing comparable sensitivity and specificity to the RT-LAMP kit used in this study. While the conventional technique requires 25 μl of reagent, our test only utilises less than half the quantity (10 μl). Thus, with its minimalistic approach, this capillary-based assay could be a promising alternative to the conventional testing, owing to the fact that it can be performed in resource-limited settings, using readily available apparatus, and has the potential of increasing the overall testing capacity, while also reducing the burden on supply chains for mass testing.
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Tang Y, Ali Z, Zou J, Jin G, Zhu J, Yang J, Dai J. Detection methods for Pseudomonas aeruginosa: history and future perspective. RSC Adv 2017. [DOI: 10.1039/c7ra09064a] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The current review summarized and analyzed the development of detection techniques forPseudomonas aeruginosaover the past 50 years.
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Affiliation(s)
- Yongjun Tang
- School of Applied Chemistry and Biotechnology
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Zeeshan Ali
- School of Applied Chemistry and Biotechnology
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Jun Zou
- School of Chemistry and Chemical Engineering
- Hunan Institute of Engineering
- Xiangtan 411104
- China
| | - Gang Jin
- School of Applied Chemistry and Biotechnology
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Junchen Zhu
- School of Applied Chemistry and Biotechnology
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Jian Yang
- School of Applied Chemistry and Biotechnology
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Jianguo Dai
- School of Applied Chemistry and Biotechnology
- Shenzhen Polytechnic
- Shenzhen 518055
- China
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