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Kumar N, Shetti NP, Jagannath S, Aminabhavi TM. Electrochemical sensors for the detection of SARS-CoV-2 virus. CHEMICAL ENGINEERING JOURNAL (LAUSANNE, SWITZERLAND : 1996) 2022; 430:132966. [PMID: 34690533 PMCID: PMC8525496 DOI: 10.1016/j.cej.2021.132966] [Citation(s) in RCA: 83] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/29/2021] [Accepted: 10/10/2021] [Indexed: 05/09/2023]
Abstract
Coronavirus (COVID-19), a deadly pandemic has spread worldwide and created many global health issues. Though methods of its detection are being continuously developed for the early detection and monitoring of COVID-19, still there is need for more novel methods. The presently used methods include rapid antigen tests, serological surveys, reverse transcription-polymerase chain reaction (RT-PCR), artificial intelligence-based techniques, and assays based on sensors/biosensors. Of all these, RT-PCR test has high sensitivity and specificity though it requires more time for testing and need for skilled technicians. Recently, electrochemical sensors have been developed for rapid monitoring and detection of SARS-CoV-2 from the patient's biological fluid samples. This review covers the recently developed electrochemical sensors that are focused on the detection of viral nucleic acid, immunoglobulin, antigen, and the entire viral particles. In addition, we also compare and assess their detection limits, sensitivities and specificities for the identification and monitoring of COVID-19. Furthermore, this review will address the best practices for the development of electrochemical sensors such as electrode fouling, limit of detection/limit of quantification determination and verification.
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Affiliation(s)
- Neeraj Kumar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science Bangalore 560012, India
| | - Nagaraj P Shetti
- School of Advanced Sciences, KLE Technological University, Hubballi 580 031, India
| | - Somanath Jagannath
- Laboratory of Molecular and Chemical Biology of Neurodegeneration, Brain Mind Institute, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Tejraj M Aminabhavi
- School of Advanced Sciences, KLE Technological University, Hubballi 580 031, India
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Vaira LA, Hopkins C, Petrocelli M, Lechien JR, Soma D, Giovanditto F, Rizzo D, Salzano G, Piombino P, Saussez S, De Riu G. Do olfactory and gustatory psychophysical scores have prognostic value in COVID-19 patients? A prospective study of 106 patients. J Otolaryngol Head Neck Surg 2020; 49:56. [PMID: 32762737 PMCID: PMC7406962 DOI: 10.1186/s40463-020-00449-y] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 07/14/2020] [Indexed: 12/20/2022] Open
Abstract
Background The lack of objective data makes it difficult to establish the prognostic value of chemosensitive disorders in coronavirus disease 2019 (COVID-19) patients. We aimed to prospectively monitor patients diagnosed with COVID-19 to see if the severity of olfactory and gustatory dysfunction associates with subsequent disease severity. Methods Multicentre prospective study that recruited 106 COVID-19 subjects at diagnosis. Chemosensitive functions were assessed with psychophysical tests within 4 days of clinical onset, at 10 and 20 days. Daily body temperature and oxygen saturation were recorded as markers of disease severity alongside need for hospitalisation. The correlation between olfactory and gustatory scores and disease severity was assessed with linear regression analysis. Results At T0, 71 patients (67%) presented with olfactory dysfunction while gustatory impairment was detected in 76 cases (65.6%). Chemosensitive disorders gradually improved over the observation period. No significant correlations were found between T0 chemosensitive scores and final disease severity. The correlation between olfactory scores and fever proved significant at T2 (p = 0.05), while the relationship with gustatory scores was significant at T1 (p = 0.01) and T2 (p < 0.001), however neither was clinically relevant. The correlation between chemosensitive scores and oxygen saturation was significant only for taste at T2 (p < 0.001). Logistic regression analysis found significant correlations between olfactory impairment severity and need for hospitalization at T2 (OR 3.750, p = 0.005). Conclusions Initial objective olfactory and gustatory scores do not seem to have a significant prognostic value in predicting the severity of the COVID-19 course; however, persistence of olfactory dysfunction at 20 days, associated with a more severe course. Unfortunately, olfactory and gustatory dysfunction do not seem to hold prognostic value at the time of initial diagnosis.
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Affiliation(s)
- Luigi Angelo Vaira
- Maxillofacial Surgery Operative Unit, University Hospital of Sassari, Viale San Pietro 43/B, 07100, Sassari, Italy
| | | | - Marzia Petrocelli
- Maxillofacial Surgery Operative Unit, Bellaria and Maggiore Hospital, AUSL Bologna, Bologna, Italy
| | - Jerome R Lechien
- .,Department of Human and Experimental Oncology, Faculty of Medicine UMONS Research Institute for Health Sciences and Technology, University of Mons (UMons), Mons, Belgium
| | - Damiano Soma
- Maxillofacial Surgery Operative Unit, University Hospital of Sassari, Viale San Pietro 43/B, 07100, Sassari, Italy
| | - Federica Giovanditto
- Maxillofacial Surgery Operative Unit, University Hospital of Sassari, Viale San Pietro 43/B, 07100, Sassari, Italy
| | - Davide Rizzo
- Otolaryngology Operative Unit, University Hospital of Sassari, Viale San Pietro 43/B, 07100, Sassari, Italy
| | - Giovanni Salzano
- Maxillofacial Surgery Unit, University Hospital of Naples "Federico II", Via Pansini 5, 80131, Naples, Italy
| | - Pasquale Piombino
- Maxillofacial Surgery Unit, University Hospital of Naples "Federico II", Via Pansini 5, 80131, Naples, Italy
| | - Sven Saussez
- .,Department of Human and Experimental Oncology, Faculty of Medicine UMONS Research Institute for Health Sciences and Technology, University of Mons (UMons), Mons, Belgium
| | - Giacomo De Riu
- Maxillofacial Surgery Operative Unit, University Hospital of Sassari, Viale San Pietro 43/B, 07100, Sassari, Italy
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