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Monari A, Cantalù S, Zanfrognini B, Brighenti V, Verri P, Zanardi C, Pellati F, Pigani L. An electrochemical approach for the prediction of Δ 9-tetrahydrocannabinolic acid and total cannabinoid content in Cannabis sativa L. Analyst 2023; 148:4688-4697. [PMID: 37602722 DOI: 10.1039/d3an01090b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Two electrochemical sensors are proposed here for the first time for the fast screening of cannabinoids in Cannabis sativa L. plant material (inflorescences). The accurate control of cannabinoid content is important for discriminating between recreational, i.e. illegal, and fibre-type C. sativa samples, which differ mainly according to the amount of Δ9-tetrahydrocannabinol (Δ9-THC) and Δ9-tetrahydrocannabinolic acid (Δ9-THCA). Two screen printed electrodes obtained using different electrode materials were tested for the analysis of extracts from recreational and fibre-type C. sativa and their performance was compared with a consolidated method based on high-performance liquid chromatography (HPLC). The voltammetric responses recorded in the different samples reflected the compositional differences of the recreational and fibre-type extracts in accordance with the results of HPLC analyses. Moreover, the quantification of Δ9-THCA and the total cannabinoid content on the basis of the intensity of the peaks of the voltammograms was possible through a simple and fast electrochemical procedure.
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Affiliation(s)
- Alessandro Monari
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via G. Campi 103, 41125 Modena, Italy.
| | - Sara Cantalù
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via G. Campi 103, 41125 Modena, Italy.
| | - Barbara Zanfrognini
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via G. Campi 103, 41125 Modena, Italy.
| | - Virginia Brighenti
- Department of Life Sciences, University of Modena and Reggio Emilia, G. Campi 103, 41125 Modena, Italy.
| | - Patrizia Verri
- Department of Biomedical, Metabolic and Neural Sciences, Institute of Legal Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | - Chiara Zanardi
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, via Torino 155, 30170 Venice, Italy
- Institute for Organic Synthesis and Photoreactivity, National Research Council, 40129 Bologna, Italy
| | - Federica Pellati
- Department of Life Sciences, University of Modena and Reggio Emilia, G. Campi 103, 41125 Modena, Italy.
- Interdepartmental Research Centre of the University of Modena and Reggio Emilia BIOGEST-SITEIA, Piazzale Europa 1, 42124 Reggio Emilia, Italy
| | - Laura Pigani
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via G. Campi 103, 41125 Modena, Italy.
- Interdepartmental Research Centre of the University of Modena and Reggio Emilia BIOGEST-SITEIA, Piazzale Europa 1, 42124 Reggio Emilia, Italy
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2
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Churcher NKM, Dhamu VN, Prasad S. CannibiSenS: an on-demand rapid screen for THC in human saliva. Analyst 2023; 148:2921-2931. [PMID: 37306613 DOI: 10.1039/d3an00522d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Management of substances that possess high potential for abuse requires a comprehensive understanding of the temporal effects of a corresponding volume of intake. Cannabis is deemed as one of the most widely used drugs in the United States and studies related to the primary psychoactive compound present in it, Δ-9-tetrahydrocannabinol (THC), have revealed that it causes adverse health effects. In this study, we present a field-deployable electrochemical sensing system that can detect THC at the 5 ng mL-1 cut-off level with a dynamic range of 0.1-100 ng mL-1 in human saliva. Considering the complexity of the human saliva matrix, the specificity study demonstrated selectivity towards THC with minimum interactions with ethanol and cannabidiol (CBD). Surface Plasmon Resonance (SPR) has been implemented to visualize and validate the capture probe as a means for THC detection. A robust, compatible binary classifier model has been shown in this work to effectively group samples into THC+ (high) and THC- (low) groups from human saliva with an accuracy greater than 90% considering a limited dataset. Hence, we demonstrate the potential of an innovative end-to-end system to effectively regulate cannabis use and prevent substance abuse in our surroundings.
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Affiliation(s)
| | - Vikram Narayanan Dhamu
- Department of Bioengineering, University of Texas at Dallas, 800 W. Campbell Rd., Richardson, Texas 75083, USA.
| | - Shalini Prasad
- Department of Bioengineering, University of Texas at Dallas, 800 W. Campbell Rd., Richardson, Texas 75083, USA.
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3
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Kékedy-Nagy L, Perry JM, Little SR, Llorens OY, Shih SCC. An electrochemical aptasensor for Δ 9-tetrahydrocannabinol detection in saliva on a microfluidic platform. Biosens Bioelectron 2023; 222:114998. [PMID: 36549107 DOI: 10.1016/j.bios.2022.114998] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/21/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022]
Abstract
We present a novel "on-off", cost-effective, rapid electrochemical aptasensor combined with a microfluidics cartridge system for the detection of Δ9-THC (Δ9-tetrahydrocannabinol) in human saliva via differential pulse voltammetry. The assay relied on the competitive binding between the Δ9-THC and a soluble redox indicator methylene blue, using an aptamer selected via FRELEX. We found that the aptasensor can detected 1 nM of Δ9-THC in PBS in a three-electrode cell system, while the sensitivity and both the dissociation constant (Kd) and association constant (Kb) were dependent on the aptamer density. The aptamer also showed great affinity towards Δ9-THC when tested against cannabinol and cannabidiol. The same limit of detection of 1 nM in PBS was achieved in small volume samples (∼60 μL) using the aptamer-modified gold screen-printed electrodes combined with the microfluidic cartridge setup, however, the presence of 10% raw human saliva had a negative effect which manifested in a 10-fold increase in the LOD due to interfering elements. Filtering the saliva, improved the tested volume to 50% and the LOD to 5 nM of Δ9-THC which is lower than the concentrations associated with impairment (6.5-32 nM). The aptasensor showed a good storage capability up to 3 days, however, the reusability significantly dropped from 10 cycles (freshly prepared) to 5 cycles. The results clearly demonstrate the feasibility of the aptasensor platform with the microfluidics chamber towards a point-of-care testing application for the detection of Δ9-THC in saliva.
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Affiliation(s)
- László Kékedy-Nagy
- Department of Electrical and Computer Engineering, Concordia University, 1455 de Maisonneuve Blvd West, Montreal, Quebec, H3G1M8, Canada; Centre for Applied Synthetic Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada
| | - James M Perry
- Centre for Applied Synthetic Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada; Department of Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada
| | - Samuel R Little
- Department of Electrical and Computer Engineering, Concordia University, 1455 de Maisonneuve Blvd West, Montreal, Quebec, H3G1M8, Canada; Centre for Applied Synthetic Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada
| | - Oriol Y Llorens
- Department of Electrical and Computer Engineering, Concordia University, 1455 de Maisonneuve Blvd West, Montreal, Quebec, H3G1M8, Canada; Centre for Applied Synthetic Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada
| | - Steve C C Shih
- Department of Electrical and Computer Engineering, Concordia University, 1455 de Maisonneuve Blvd West, Montreal, Quebec, H3G1M8, Canada; Centre for Applied Synthetic Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada; Department of Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada.
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4
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Preliminary evaluation of the use of a disposable electrochemical sensor for selective identification of Δ9-tetrahydrocannabinol and cannabidiol by multivariate analysis. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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5
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Joosten F, Parrilla M, van Nuijs AL, Ozoemena KI, De Wael K. Electrochemical detection of illicit drugs in oral fluid: potential for forensic drug testing. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Harpaz D, Bernstein N, Namdar D, Eltzov E. Portable biosensors for rapid on-site determination of cannabinoids in cannabis, a review. Biotechnol Adv 2022; 61:108031. [PMID: 36058440 DOI: 10.1016/j.biotechadv.2022.108031] [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: 06/28/2022] [Revised: 08/12/2022] [Accepted: 08/26/2022] [Indexed: 11/02/2022]
Abstract
Recent studies highlight the therapeutic virtues of cannabidiol (CBD). Furthermore, due to their molecular enriched profiles, cannabis inflorescences are biologically superior to a single cannabinoid for the treatment of various health conditions. Thus, there is flourishing demand for Cannabis sativa varieties containing high levels of CBD. Additionally, legal regulations around the world restrict the cultivation and consumption of tetrahydrocannabinol (THC)-rich cannabis plants for their psychotropic effects. Therefore, the use of cannabis varieties that are high in CBD is permitted as long as their THC content does not exceed a low threshold of 0.3%-0.5%, depending on the jurisdiction. These chemovars are legally termed 'hemp'. This controlled cannabinoid requirement highlights the need to detect low levels of THC, already in the field. In this review, cannabis profiling and the existing methods used for the detection of cannabinoids are firstly evaluated. Then, selected valuable biosensor technologies are discussed, which suggest portable, rapid, sensitive, reproducible, and reliable methods for on-site identification of cannabinoids levels, mainly THC. Recent cutting-edge techniques of promising potential usage for both cannabis and hemp analysis are identified, as part of the future cultivation and agricultural improvement of this crop.
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Affiliation(s)
- Dorin Harpaz
- Institute of Postharvest and Food Science, Department of Postharvest Science, Volcani Institute, Agricultural Research Organization, Rishon LeZion 7505101, Israel; Institute of Biochemistry, Food Science and Nutrition, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel.
| | - Nirit Bernstein
- Institute of Soil Water and Environmental Sciences, Volcani Institute, Agricultural Research Organization, POBox 6, Bet-Dagan 50250, Israel.
| | - Dvora Namdar
- Institute of Soil Water and Environmental Sciences, Volcani Institute, Agricultural Research Organization, POBox 6, Bet-Dagan 50250, Israel.
| | - Evgeni Eltzov
- Institute of Postharvest and Food Science, Department of Postharvest Science, Volcani Institute, Agricultural Research Organization, Rishon LeZion 7505101, Israel.
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Affinity Assays for Cannabinoids Detection: Are They Amenable to On-Site Screening? BIOSENSORS 2022; 12:bios12080608. [PMID: 36005003 PMCID: PMC9405638 DOI: 10.3390/bios12080608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/27/2022] [Accepted: 08/04/2022] [Indexed: 12/02/2022]
Abstract
Roadside testing of illicit drugs such as tetrahydrocannabinol (THC) requires simple, rapid, and cost-effective methods. The need for non-invasive detection tools has led to the development of selective and sensitive platforms, able to detect phyto- and synthetic cannabinoids by means of their main metabolites in breath, saliva, and urine samples. One may estimate the time passed from drug exposure and the frequency of use by corroborating the detection results with pharmacokinetic data. In this review, we report on the current detection methods of cannabinoids in biofluids. Fluorescent, electrochemical, colorimetric, and magnetoresistive biosensors will be briefly overviewed, putting emphasis on the affinity formats amenable to on-site screening, with possible applications in roadside testing and anti-doping control.
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8
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Li Z, Shen F, Mishra RK, Wang Z, Zhao X, Zhu Z. Advances of Drugs Electroanalysis Based on Direct Electrochemical Redox on Electrodes: A Review. Crit Rev Anal Chem 2022; 54:269-314. [PMID: 35575782 DOI: 10.1080/10408347.2022.2072679] [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] [Indexed: 10/18/2022]
Abstract
The strong development of mankind is inseparable from the proper use of drugs, and the electroanalytical research of drugs occupies an important position in the field of analytical chemistry. This review mainly elaborates the research progress of drugs electroanalysis based on direct electrochemical redox on various electrodes for the recent decade from 2011 to 2021. At first, we summarize some frequently used electrochemical data processing and electrochemical mechanism research derivation methods in the literature. Then, according to the drug therapeutic and application/usage purposes, the research progress of drugs electrochemical analysis is classified and discussed, where we focus on drugs electrochemical reaction mechanism. At the same time, the comparisons of electrochemical sensing performance of the drugs on various electrodes from recent studies are listed, so that readers can more intuitively compare and understand the electroanalytical sensing performance of each modified electrode for each of the drug. Finally, this review discusses the shortcomings and prospects of the drugs electroanalysis based on direct electrochemical redox research.
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Affiliation(s)
- Zhanhong Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Feichen Shen
- School of Energy and Materials, Shanghai Polytechnic University, Shanghai, China
| | - Rupesh K Mishra
- Identify Sensors Biologics at Bindley Bioscience Center, West Lafayette, Indiana, USA
- School of Material Science and Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Zifeng Wang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Xueling Zhao
- School of Energy and Materials, Shanghai Polytechnic University, Shanghai, China
| | - Zhigang Zhu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
- School of Energy and Materials, Shanghai Polytechnic University, Shanghai, China
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9
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Amini K, Sepehrifard A, Valinasabpouri A, Safruk J, Angelone D, de Campos Lourenco T. Recent advances in electrochemical sensor technologies for THC detection-a narrative review. J Cannabis Res 2022; 4:12. [PMID: 35292105 PMCID: PMC8925211 DOI: 10.1186/s42238-022-00122-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 02/17/2022] [Indexed: 11/20/2022] Open
Abstract
Background Δ9-tetrahydrocannabinol (THC) is the main psychoactive component and one of the most important medicinal compounds in cannabis. Whether in human body fluids and breath or in laboratory and field samples, rapid and easy detection of THC is crucial. It provides insights into the impact of THC on human organism and its medicinal benefits, it guides the cannabis growers to determine different stages of the growth of the plant in the field, and eventually it helps scientists in the laboratory to assure the quality of the products and determine their potency or better understand the product development procedures. The significance of fast THC detection in forensic analysis also cannot be overlooked. Electrochemical sensor technologies are currently in the focus of attention for fast, easy, and low-cost detection of THC. Method In this work, we review the recent advances in sensor technologies developed for the purpose of fast and accurate THC detection. The research works performed mostly in the past decade and those detecting THC directly without any derivatization were the main target of this review. The scope of this narrative review was the reports on detecting THC in synthetic samples and plants as well as oral fluid. Results Electrochemical sensor technologies are sensitive enough and have the potential for fast, easy, and low-cost detection of THC for roadside testing, THC trending in growing cannabis plants, THC product development and formulation for medical purposes, etc., and they can provide an alternative for costly chromatography and mass spectrometry-based methods. Conclusion The main challenges facing these sensors, however, are nonspecific interaction and the interference of compounds and species from the matrix. Special requirement for storing sensors modified with antibodies or proteins is another challenge in this field. Preparing long-lasting and reusable sensors is a field worthy of attention.
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Affiliation(s)
- Kaveh Amini
- Selective Lab Inc., Richmond Hill, ON, Canada.
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10
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Żubrycka A, Kwaśnica A, Haczkiewicz M, Sipa K, Rudnicki K, Skrzypek S, Poltorak L. Illicit drugs street samples and their cutting agents. The result of the GC-MS based profiling define the guidelines for sensors development. Talanta 2022; 237:122904. [PMID: 34736717 DOI: 10.1016/j.talanta.2021.122904] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/21/2021] [Accepted: 09/22/2021] [Indexed: 12/16/2022]
Abstract
In this work, we have focused on the profiling of 5647 street samples covering marijuana, common and new recreational illicit drugs. All samples were analyzed using gas chromatography-mass spectrometry (GC-MS) technique. In total we have identified 53 illicit drugs with Δ-9-tetrahydrocannabinol (THC), amphetamine, N-ethylhexedrone, 3,4-methylenedioxy methamphetamine (MDMA), 4-chloromethcathinone (4-CMC), α-pyrrolidinoisohexaphenone (α-PHiP), cocaine, and 4-chloroethcathinone (4-CEC) being most commonly found and making 38.5, 17.8, 15.5, 8.0, 3.5, 2.7, 2.1, and 2.0% of the total studied pool, respectively. Except for methadone, all analyzed street samples were spiked with at least one cutting agent. Caffeine was the most frequently found adulterating addition present in around 33% (excluding marijuana) of the analyzed samples. Other identified cutting agents make an impressive group of more than 160 compounds. Finally, we have tabulated, illustrated, and discussed presented data in a view of smart and portable sensors development.
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Affiliation(s)
- Anna Żubrycka
- Laboratorium Badań Toksykologicznych Lab4Tox Sp. Z o.o., Skłodowskiej-Curie 55/61, 50-369, Wroclaw, Poland; Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403, Lodz, Poland
| | - Andrzej Kwaśnica
- Laboratorium Badań Toksykologicznych Lab4Tox Sp. Z o.o., Skłodowskiej-Curie 55/61, 50-369, Wroclaw, Poland
| | - Monika Haczkiewicz
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland
| | - Karolina Sipa
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403, Lodz, Poland
| | - Konrad Rudnicki
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403, Lodz, Poland
| | - Sławomira Skrzypek
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403, Lodz, Poland
| | - Lukasz Poltorak
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403, Lodz, Poland.
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11
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Ortega GA, Ahmed SR, Tuteja SK, Srinivasan S, Rajabzadeh AR. A biomolecule-free electrochemical sensing approach based on a novel electrode modification technique: Detection of ultra-low concentration of Δ⁹-tetrahydrocannabinol in saliva by turning a sample analyte into a sensor analyte. Talanta 2022; 236:122863. [PMID: 34635245 DOI: 10.1016/j.talanta.2021.122863] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 09/05/2021] [Accepted: 09/08/2021] [Indexed: 01/14/2023]
Abstract
Cannabis is currently one of the most consumed drugs in many countries. Δ⁹-tetrahydrocannabinol (THC) is the principal psychoactive component of this drug and is present in saliva after consumption. This paper reports a novel biomolecule-free electrochemical approach to detect an ultra-low level of THC in saliva using modified electrodes with molecules of the same analyte (THC) that are detected later via square wave voltammetry. The results from this research revealed that the electrodeposition of THC on the working electrode (sensor analyte) could highly enhance the limit of detection by improving the affinity of the THC molecules present in the sample (sample analyte) to the sensing electrode surface. Detailed descriptions about the optimization of the sensor and its performance in simple media, such as PBS, and complex media, such as simulated and real saliva, are provided. This novel and yet simple electrochemical-based sensing strategy allowed for a low limit of detection of 1.6 ng/mL THC in simulated and real saliva, distinguishing concentrations ranging from 2 to 25 ng/mL, making this technology viable for a real-world application such as roadside testing.
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Affiliation(s)
- Greter A Ortega
- School of Engineering Practice and Technology, McMaster University, 1280 Main Street West Hamilton, ON, L8S 4L8, Canada
| | - Syed Rahin Ahmed
- School of Engineering Practice and Technology, McMaster University, 1280 Main Street West Hamilton, ON, L8S 4L8, Canada
| | - Satish K Tuteja
- School of Engineering Practice and Technology, McMaster University, 1280 Main Street West Hamilton, ON, L8S 4L8, Canada
| | - Seshasai Srinivasan
- School of Engineering Practice and Technology, McMaster University, 1280 Main Street West Hamilton, ON, L8S 4L8, Canada.
| | - Amin Reza Rajabzadeh
- School of Engineering Practice and Technology, McMaster University, 1280 Main Street West Hamilton, ON, L8S 4L8, Canada.
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González-Hernández J, Ott CE, Arcos-Martínez MJ, Colina Á, Heras A, Alvarado-Gámez AL, Urcuyo R, Arroyo-Mora LE. Rapid Determination of the 'Legal Highs' 4-MMC and 4-MEC by Spectroelectrochemistry: Simultaneous Cyclic Voltammetry and In Situ Surface-Enhanced Raman Spectroscopy. SENSORS (BASEL, SWITZERLAND) 2021; 22:295. [PMID: 35009837 PMCID: PMC8749763 DOI: 10.3390/s22010295] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/18/2021] [Accepted: 12/27/2021] [Indexed: 11/18/2022]
Abstract
The synthetic cathinones mephedrone (4-MMC) and 4-methylethcathinone (4-MEC) are two designer drugs that represent the rise and fall effect of this drug category within the stimulants market and are still available in several countries around the world. As a result, the qualitative and quantitative determination of 'legal highs', and their mixtures, are of great interest. This work explores for the first time the spectroelectrochemical response of these substances by coupling cyclic voltammetry (CV) with Raman spectroscopy in a portable instrument. It was found that the stimulants exhibit a voltammetric response on a gold screen-printed electrode while the surface is simultaneously electro-activated to achieve a periodic surface-enhanced Raman spectroscopy (SERS) substrate with high reproducibility. The proposed method enables a rapid and reliable determination in which both substances can be selectively analyzed through the oxidation waves of the molecules and the characteristic bands of the electrochemical SERS (EC-SERS) spectra. The feasibility and applicability of the method were assessed in simulated seized drug samples and spiked synthetic urine. This time-resolved spectroelectrochemical technique provides a cost-effective and user-friendly tool for onsite screening of synthetic stimulants in matrices with low concentration analytes for forensic applications.
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Affiliation(s)
- Jerson González-Hernández
- Centro de Investigación en Electroquímica y Energía Química (CELEQ), Universidad de Costa Rica, San José 11501-2060, Costa Rica; (J.G.-H.); (A.L.A.-G.); (R.U.)
- Escuela de Química, Universidad de Costa Rica, San José 11501-2060, Costa Rica
| | - Colby Edward Ott
- Department of Forensic and Investigative Science, West Virginia University, Morgantown, WV 26506, USA;
| | - María Julia Arcos-Martínez
- Departamento de Química, Universidad de Burgos, Pza. Misael Bañuelos s/n, E-09001 Burgos, Spain; (M.J.A.-M.); (Á.C.); (A.H.)
| | - Álvaro Colina
- Departamento de Química, Universidad de Burgos, Pza. Misael Bañuelos s/n, E-09001 Burgos, Spain; (M.J.A.-M.); (Á.C.); (A.H.)
| | - Aránzazu Heras
- Departamento de Química, Universidad de Burgos, Pza. Misael Bañuelos s/n, E-09001 Burgos, Spain; (M.J.A.-M.); (Á.C.); (A.H.)
| | - Ana Lorena Alvarado-Gámez
- Centro de Investigación en Electroquímica y Energía Química (CELEQ), Universidad de Costa Rica, San José 11501-2060, Costa Rica; (J.G.-H.); (A.L.A.-G.); (R.U.)
| | - Roberto Urcuyo
- Centro de Investigación en Electroquímica y Energía Química (CELEQ), Universidad de Costa Rica, San José 11501-2060, Costa Rica; (J.G.-H.); (A.L.A.-G.); (R.U.)
- Escuela de Química, Universidad de Costa Rica, San José 11501-2060, Costa Rica
- Centro de Investigación en Ciencias e Ingeniería de Materiales (CICIMA), Universidad de Costa Rica, San José 11501-2060, Costa Rica
| | - Luis E. Arroyo-Mora
- Department of Forensic and Investigative Science, West Virginia University, Morgantown, WV 26506, USA;
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13
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Vacek J, Vostalova J, Papouskova B, Skarupova D, Kos M, Kabelac M, Storch J. Antioxidant function of phytocannabinoids: Molecular basis of their stability and cytoprotective properties under UV-irradiation. Free Radic Biol Med 2021; 164:258-270. [PMID: 33453360 DOI: 10.1016/j.freeradbiomed.2021.01.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 12/10/2020] [Accepted: 01/06/2021] [Indexed: 01/14/2023]
Abstract
In this contribution, a comprehensive study of the redox transformation, electronic structure, stability and photoprotective properties of phytocannabinoids is presented. The non-psychotropic cannabidiol (CBD), cannabigerol (CBG), cannabinol (CBN), cannabichromene (CBC), and psychotropic tetrahydrocannabinol (THC) isomers and iso-THC were included in the study. The results show that under aqueous ambient conditions at pH 7.4, non-psychotropic cannabinoids are slight or moderate electron-donors and they are relatively stable, in the following order: CBD > CBG ≥ CBN > CBC. In contrast, psychotropic Δ9-THC degrades approximately one order of magnitude faster than CBD. The degradation (oxidation) is associated with the transformation of OH groups and changes in the double-bond system of the investigated molecules. The satisfactory stability of cannabinoids is associated with the fact that their OH groups are fully protonated at pH 7.4 (pKa is ≥ 9). The instability of CBN and CBC was accelerated after exposure to UVA radiation, with CBD (or CBG) being stable for up to 24 h. To support their topical applications, an in vitro dermatological comparative study of cytotoxic, phototoxic and UVA or UVB photoprotective effects using normal human dermal fibroblasts (NHDF) and keratinocytes (HaCaT) was done. NHDF are approx. twice as sensitive to the cannabinoids' toxicity as HaCaT. Specifically, toxicity IC50 values for CBD after 24 h of incubation are 7.1 and 12.8 μM for NHDF and HaCaT, respectively. None of the studied cannabinoids were phototoxic. Extensive testing has shown that CBD is the most effective protectant against UVA radiation of the studied cannabinoids. For UVB radiation, CBN was the most effective. The results acquired could be used for further redox biology studies on phytocannabinoids and evaluations of their mechanism of action at the molecular level. Furthermore, the UVA and UVB photoprotectivity of phytocannabinoids could also be utilized in the development of new cannabinoid-based topical preparations.
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Affiliation(s)
- Jan Vacek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 3, 775 15, Olomouc, Czech Republic.
| | - Jitka Vostalova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 3, 775 15, Olomouc, Czech Republic
| | - Barbora Papouskova
- Department of Analytical Chemistry, Faculty of Science, Palacky University, 17. Listopadu 12, 771 46, Olomouc, Czech Republic
| | - Denisa Skarupova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 3, 775 15, Olomouc, Czech Republic
| | - Martin Kos
- Department of Advanced Materials and Organic Synthesis, Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v. v. i., Rozvojova 135, 165 02, Prague 6, Czech Republic
| | - Martin Kabelac
- Department of Chemistry, Faculty of Science, University of South Bohemia, Branisovska 31, 370 05, Ceske Budejovice, Czech Republic
| | - Jan Storch
- Department of Advanced Materials and Organic Synthesis, Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v. v. i., Rozvojova 135, 165 02, Prague 6, Czech Republic.
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Li J, Zhang Y, Zhou Y, Feng XS. Cannabinoids: Recent Updates on Public Perception, Adverse Reactions, Pharmacokinetics, Pretreatment Methods and Their Analysis Methods. Crit Rev Anal Chem 2021; 52:1197-1222. [PMID: 33557608 DOI: 10.1080/10408347.2020.1864718] [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: 10/22/2022]
Abstract
Cannabinoids (CBDs) have been traditionally used as a folk medicine. Recently, they have been found to exhibit a high pharmacological potential. However, they are addicted and are often abused by drug users, thereby, becoming a threat to public safety. CBDs and their metabolites are usually found in trace levels in plants or in biological matrices and, are therefore not easy to be detected. Advances have been made toward accurately analyzing CBDs in plants or in biological matrices. This review aims at elucidating on the consumption of CBDs as well as its adverse effects and to provide a comprehensive overview of CBD pretreatment and detection methods. Moreover, novel pretreatment methods such as microextraction, Quick Easy Cheap Effective Rugged Safe and online technology as well as novel analytic methods such as ion-mobility mass spectrometry, application of high resolution mass spectrometry in nontarget screening are summarized. In addition, we discuss and compare the strengths and weaknesses of different methods and suggest their future prospect.
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Affiliation(s)
- Jie Li
- School of Pharmacy, China Medical University, Shenyang, China
| | - Yuan Zhang
- School of Pharmacy, China Medical University, Shenyang, China
| | - Yu Zhou
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xue-Song Feng
- School of Pharmacy, China Medical University, Shenyang, China
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15
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Kotru S, Klimuntowski M, Ridha H, Uddin Z, Askhar AA, Singh G, Howlader MMR. Electrochemical sensing: A prognostic tool in the fight against COVID-19. Trends Analyt Chem 2021; 136:116198. [PMID: 33518850 PMCID: PMC7825925 DOI: 10.1016/j.trac.2021.116198] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The COVID-19 pandemic has devastated the world, despite all efforts in infection control and treatment/vaccine development. Hospitals are currently overcrowded, with health statuses of patients often being hard to gauge. Therefore, methods for determining infection severity need to be developed so that high-risk patients can be prioritized, resources can be efficiently distributed, and fatalities can be prevented. Electrochemical prognostic biosensing of various biomarkers may hold promise in solving these problems as they are low-cost and provide timely results. Therefore, we have reviewed the literature and extracted the most promising biomarkers along with their most favourable electrochemical sensors. The biomarkers discussed in this paper are C-reactive protein (CRP), interleukins (ILs), tumour necrosis factor alpha (TNFα), interferons (IFNs), glutamate, breath pH, lymphocytes, platelets, neutrophils and D-dimer. Metabolic syndrome is also discussed as comorbidity for COVID-19 patients, as it increases infection severity and raises chances of becoming infected. Cannabinoids, especially cannabidiol (CBD), are discussed as a potential adjunct therapy for COVID-19 as their medicinal properties may be desirable in minimizing the neurodegenerative or severe inflammatory damage caused by severe COVID-19 infection. Currently, hospitals are struggling to provide adequate care; thus, point-of-care electrochemical sensor development needs to be prioritized to provide an approximate prognosis for hospital patients. During and following the immediate aftermath of the pandemic, electrochemical sensors can also be integrated into wearable and portable devices to help patients monitor recovery while returning to their daily lives. Beyond the COVID-19 pandemic, these sensors will also prove useful for monitoring inflammation-based diseases such as cancer and cardiovascular disease.
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Affiliation(s)
- Sharda Kotru
- Department of Integrated Biomedical Engineering and Health Sciences, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
| | - Martin Klimuntowski
- Department of Electrical and Computer Engineering, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
| | - Hashim Ridha
- School of Interdisciplinary Science, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
| | - Zakir Uddin
- School of Rehabilitation Science, McMaster University, 1400 Main St W, Hamilton, ON, L8S 1C7, Canada
| | - Ali A Askhar
- Department of Medicine, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4K1, Canada
| | - Gurmit Singh
- Department of Pathology and Molecular Medicine, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4K1, Canada
| | - Matiar M R Howlader
- Department of Electrical and Computer Engineering, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
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16
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Cirrincione M, Zanfrognini B, Pigani L, Protti M, Mercolini L, Zanardi C. Development of an electrochemical sensor based on carbon black for the detection of cannabidiol in vegetable extracts. Analyst 2021; 146:612-619. [DOI: 10.1039/d0an01932a] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A glassy carbon electrode chemically modified with a carbon black coating is proposed here for the rapid and portable determination of cannabidiol (CBD) in a commercial Cannabis seed oil and in fibre-type Cannabis sativa L. leaves.
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Affiliation(s)
- Marco Cirrincione
- Department of Pharmacy and Biotechnology
- Alma Mater Studiorum
- Università di Bologna
- 40126 Bologna
- Italy
| | - Barbara Zanfrognini
- Institute of Organic Synthesis and Photoreactivity (ISOF)
- National Research Council of Italy (CNR)
- 40129 Bologna
- Italy
| | - Laura Pigani
- Department of Chemical and Geological Sciences
- Università di Modena e Reggio Emilia
- 41125 Modena
- Italy
| | - Michele Protti
- Department of Pharmacy and Biotechnology
- Alma Mater Studiorum
- Università di Bologna
- 40126 Bologna
- Italy
| | - Laura Mercolini
- Department of Pharmacy and Biotechnology
- Alma Mater Studiorum
- Università di Bologna
- 40126 Bologna
- Italy
| | - Chiara Zanardi
- Institute of Organic Synthesis and Photoreactivity (ISOF)
- National Research Council of Italy (CNR)
- 40129 Bologna
- Italy
- Department of Chemical and Geological Sciences
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17
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Chand R, Mittal N, Srinivasan S, Rajabzadeh AR. Upconverting nanoparticle clustering based rapid quantitative detection of tetrahydrocannabinol (THC) on lateral-flow immunoassay. Analyst 2021; 146:574-580. [DOI: 10.1039/d0an01850c] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cannabis, also known as marijuana, is the most abused psychoactive drug worldwide.
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Affiliation(s)
- Rohit Chand
- W Booth School of Engineering Practice and Technology
- McMaster University
- Hamilton
- Canada
| | - Neha Mittal
- W Booth School of Engineering Practice and Technology
- McMaster University
- Hamilton
- Canada
| | - Seshasai Srinivasan
- W Booth School of Engineering Practice and Technology
- McMaster University
- Hamilton
- Canada
| | - Amin Reza Rajabzadeh
- W Booth School of Engineering Practice and Technology
- McMaster University
- Hamilton
- Canada
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18
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López-Iglesias D, García-Guzmán JJ, Zanardi C, Palacios-Santander JM, Cubillana-Aguilera L, Pigani L. Fast electroanalytical determination of Cannabidiol and Cannabinol in aqueous solution using Sonogel-Carbon-PEDOT devices. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114591] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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19
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Ahmed SR, Chand R, Kumar S, Mittal N, Srinivasan S, Rajabzadeh AR. Recent biosensing advances in the rapid detection of illicit drugs. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116006] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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20
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Chu J, Yang X, Yang A, Wang D, Yuan H, Wang X, Rong M. Multivariate Evaluation Method for Screening Optimum Gas-Sensitive Materials for Detecting SF 6 Decomposition Products. ACS Sens 2020; 5:2025-2035. [PMID: 32608225 DOI: 10.1021/acssensors.0c00463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In previous studies, the selection of optimal gas-sensing materials for detecting target gases mainly relied on their response value, but other indices, such as the recovery capability of materials, have usually been overlooked. Here, we propose a new method for evaluating sensor effectiveness that includes a broader range of performance indices. In this study, four gas sensors based on metal-oxide semiconductors (WO3, CeO2, In2O3, and SnO2) were used as examples, and their performance in the detection of four decomposition products of sulfur hexafluoride (SF6) was investigated. After gas-sensing experiments, values for working temperature, response value, and recovery capability were obtained. A multivariate evaluation method of mixing principal component analysis, information entropy, and variation coefficient was developed to calculate the weights of various indices, and the sensors' optimal working temperatures could be identified quantitatively. Using five variables (working temperature, response value, recovery capability, fluctuation rate, and detection limit), we continued to apply this multivariate evaluation method to calculate the weights and acquire comprehensive scores for the four sensors. Finally, these scores were used to identify the optimal materials for detecting SF6 decomposition products. This procedure has the potential for selecting the best sensors for other gases.
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Affiliation(s)
- Jifeng Chu
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
| | - Xu Yang
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
| | - Aijun Yang
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
| | - Dawei Wang
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
| | - Huan Yuan
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
| | - Xiaohua Wang
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
| | - Mingzhe Rong
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
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21
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22
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Darzi ER, Garg NK. Electrochemical Oxidation of Δ 9-Tetrahydrocannabinol: A Simple Strategy for Marijuana Detection. Org Lett 2020; 22:3951-3955. [PMID: 32330051 PMCID: PMC8290221 DOI: 10.1021/acs.orglett.0c01241] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Recently, it has been estimated that nearly 200 million people use marijuana with growing usage being attributed to the legalization and decriminalization of the drug around the world. A concerning implication of increased marijuana use is the alarming number of individuals who report driving under the influence of the drug, which has prompted the development of detection technologies. An electrochemical-based detection technology, akin to how the alcohol breathalyzer functions, would provide an attractive solution to this growing societal problem. The first step toward this goal is to develop a reaction that converts Δ9-tetrahydrocannabinol (Δ9-THC), the primary psychoactive substance in marijuana, to a derivative with diagnostic spectroscopic changes. We report the development of a mild electrochemical method for the oxidation of Δ9-THC to its corresponding p-quinone isomer. The photophysical and electrochemical properties of the resultant quinone show a dramatic shift in comparison to Δ9-THC. This simple protocol provides the foundation for the development of an electrochemical-based marijuana breathalyzer.
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Affiliation(s)
- Evan R Darzi
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Neil K Garg
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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23
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Klimuntowski M, Alam MM, Singh G, Howlader MMR. Electrochemical Sensing of Cannabinoids in Biofluids: A Noninvasive Tool for Drug Detection. ACS Sens 2020; 5:620-636. [PMID: 32102542 DOI: 10.1021/acssensors.9b02390] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Cannabinoid sensing in biofluids provides great insight into the effects of medicinal cannabis on the body. The prevalence of cannabis for pain management and illicit drug use necessitates knowledge translation in cannabinoids. In this Review, we provide an overview of the current detection methods of cannabinoids in bodily fluids emphasizing electrochemical sensing. First, we introduce cannabinoids and discuss the structure and metabolism of Δ9-THC and its metabolites in relation to blood, urine, saliva, sweat, and breath. Next, we briefly discuss lab based techniques for cannabinoids in biofluids. While these techniques are highly sensitive and specific, roadside safety requires a quick, portable, and cost-effective sensing method. These needs motivated a comprehensive review of advantages, disadvantages, and future directions for electrochemical sensing of cannabinoids. The literature shows the lowest limit of detection to be 3.3 pg of Δ9-THC/mL using electrochemical immunosensors, while electrodes fabricated with low cost methods such as screen-printing and carbon paste can detect as little as 25 and 1.26 ng of Δ9-THC/mL, respectively. Future research will include nanomaterial modified working electrodes, for simultaneous sensing of multiple cannabinoids. Additionally, there should be an emphasis on selectivity for cannabinoids in the presence of interfering compounds. Sensors should be fully integrated on biocompatible substrates with control electronics and intelligent components for wearable diagnostics. We hope this Review will prove to be the seminal work in the electrochemical sensing of cannabinoids.
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Affiliation(s)
- Martin Klimuntowski
- Department of Electrical and Computer Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - Maksud M. Alam
- Department of Electrical and Computer Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - Gurmit Singh
- Department of Pathology and Molecular Medicine, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Matiar M. R. Howlader
- Department of Electrical and Computer Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
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24
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Mishra RK, Sempionatto JR, Li Z, Brown C, Galdino NM, Shah R, Liu S, Hubble LJ, Bagot K, Tapert S, Wang J. Simultaneous detection of salivary Δ 9-tetrahydrocannabinol and alcohol using a Wearable Electrochemical Ring Sensor. Talanta 2020; 211:120757. [PMID: 32070607 DOI: 10.1016/j.talanta.2020.120757] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/08/2020] [Accepted: 01/16/2020] [Indexed: 12/24/2022]
Abstract
Driving under the influence of cannabis and alcohol represents a major safety concern due to the synergistic or additive effect of these substances of abuse. Hence, rapid road-site testing of these substances is highly desired to reduce risks of fatal accidents. Here we describe a wearable electrochemical sensing device for the simultaneous direct, decentralized, detection of salivary THC and alcohol. The new ring-based sensing platform contains a voltammetric THC sensor and an amperometric alcohol biosensor on the ring cap, along with the wireless electronics embedded within the ring case. Rapid replacement of the disposable sensing-electrode ring cap following each saliva assay is accomplished by aligning spring-loaded pins, mounted on the electronic board (PCB), with the current collectors of the sensing electrodes. The printed dual-analyte sensor ring cover is based on a MWCNT/carbon electrode for the THC detection along with a Prussian-blue transducer, coated with alcohol oxidase/chitosan reagent layer, for the biosensing of alcohol. THC and alcohol can thus be detected simultaneously in the same diluted saliva sample within 3 min, with no cross talk and no interferences from the saliva matrix. The new wearable ring sensor platform should enable law enforcement personnel to screen drivers in a single traffic stop and offers considerable promise for addressing growing concerns of drug-impaired driving.
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Affiliation(s)
- Rupesh K Mishra
- Department of Nanoengineering, University of California San Diego, La Jolla, CA 92093, USA; Amity Institute of Biotechnology, Amity University Rajasthan, Jaipur, 303002, India
| | - Juliane R Sempionatto
- Department of Nanoengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Zhanhong Li
- Department of Nanoengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Christopher Brown
- Department of Nanoengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Nathalia M Galdino
- Department of Nanoengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Rushabh Shah
- Department of Nanoengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Shuyang Liu
- Department of Nanoengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Lee J Hubble
- Department of Nanoengineering, University of California San Diego, La Jolla, CA 92093, USA; CSIRO Manufacturing, Lindfield, New South Wales 2070, Australia
| | - Kara Bagot
- Department of Psychiatry, University of California, San Diego, La Jolla, CA 92093, USA; Department of Psychiatry, Addiction Institute of Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Susan Tapert
- Department of Psychiatry, University of California, San Diego, La Jolla, CA 92093, USA
| | - Joseph Wang
- Department of Nanoengineering, University of California San Diego, La Jolla, CA 92093, USA.
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25
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Comeau ZJ, Boileau NT, Lee T, Melville OA, Rice NA, Troung Y, Harris CS, Lessard BH, Shuhendler AJ. On-the-Spot Detection and Speciation of Cannabinoids Using Organic Thin-Film Transistors. ACS Sens 2019; 4:2706-2715. [PMID: 31453690 DOI: 10.1021/acssensors.9b01150] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Quality control is imperative for Cannabis since the primary cannabinoids, Δ9-tetrahydrocannabinol (THC) and cannabidiol (CBD), elicit very different pharmacological effects. THC/CBD ratios are currently determined by techniques not readily accessible by consumers or dispensaries and which are impractical for use in the field by law-enforcement agencies. CuPc- and F16-CuPc-based organic thin-film transistors have been combined with a cannabinoid-sensitive chromophore for the detection and differentiation of THC and CBD. The combined use of these well-characterized and inexpensive p- and n-type materials afforded the determination of the CBD/THC ratio from rapid plant extracts, with results indistinguishable from high-pressure liquid chromatography. Analysis of the prepyrolyzed sample accurately predicted postpyrolysis THC/CBD, which ultimately influences the psychotropic and medicinal effects of the specific plant. The devices were also capable of vapor-phase sensing, producing a unique electrical output for THC and CBD relative to other potentially interfering vaporized organic products. The analysis of complex medicinal plant extracts and vapors, normally reserved for advanced analytical infrastructure, can be achieved with ease, at low cost, and on the spot, using organic thin-film transistors.
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26
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Renaud-Young M, Mayall RM, Salehi V, Goledzinowski M, Comeau FJ, MacCallum JL, Birss VI. Development of an ultra-sensitive electrochemical sensor for Δ9-tetrahydrocannabinol (THC) and its metabolites using carbon paper electrodes. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.02.117] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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27
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Extractive stripping voltammetry at carbon paste electrodes for determination of biologically active organic compounds. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-018-2346-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Hacke ACM, Lima D, de Costa F, Deshmukh K, Li N, Chow AM, Marques JA, Pereira RP, Kerman K. Probing the antioxidant activity of Δ9-tetrahydrocannabinol and cannabidiol in Cannabis sativa extracts. Analyst 2019; 144:4952-4961. [DOI: 10.1039/c9an00890j] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A good correlation was obtained between the antioxidant activities of Cannabis sativa samples determined by spectrophotometric and electrochemical methods.
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Affiliation(s)
| | - Dhésmon Lima
- Departamento de Química
- Universidade Estadual de Ponta Grossa
- Ponta Grossa
- Brazil
| | | | | | - Nan Li
- Lupos (Canada) Biotechnology Inc
- Toronto
- Canada
| | - Ari M. Chow
- Department of Physical and Environmental Sciences
- University of Toronto Scarborough
- Toronto
- Canada
| | | | | | - Kagan Kerman
- Department of Physical and Environmental Sciences
- University of Toronto Scarborough
- Toronto
- Canada
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29
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Wanklyn C, Burton D, Enston E, Bartlett CA, Taylor S, Raniczkowska A, Black M, Murphy L. Disposable screen printed sensor for the electrochemical detection of delta-9-tetrahydrocannabinol in undiluted saliva. Chem Cent J 2016; 10:1. [PMID: 26807144 PMCID: PMC4722664 DOI: 10.1186/s13065-016-0148-1] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 01/07/2016] [Indexed: 11/22/2022] Open
Abstract
Background Cannabis has an adverse effect on the ability to drive safely, therefore a rapid disposable test for Δ9-tetrahydrocannabinol (Δ9-THC), the psychoactive component of cannabis, is highly desirable for roadside testing. Results A screen printed carbon electrode is used for the N-(4-amino-3-methoxyphenyl)-methanesulfonamide mediated detection of Δ9-THC in saliva. Mediator placed in an overlayer was galvanostatically oxidized and reacted with Δ9-THC to give an electrochemically active adduct which could be detected by chronoamperometric reduction. Detection of 25-50 ng/mL Δ9-THC spiked into undiluted saliva was achieved with a response time of 30 s. A trial of the sensors with four cannabis smokers showed sensitivity of 28 %, specificity of 99 % and accuracy of 52 %. Conclusions Rapid electrochemical detection of Δ9-THC in undiluted saliva has been demonstrated using a disposable sensor, however the sensitivity is lower than acceptable. Further optimization of the assay and sensor format is required to improve the sensitivity of response to Δ9-THC.
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Affiliation(s)
- Ceri Wanklyn
- Oxtox Limited, Warren House, Mowbray Street, Stockport, SK1 3EJ UK
| | - Dan Burton
- Oxtox Limited, Warren House, Mowbray Street, Stockport, SK1 3EJ UK
| | - Emma Enston
- Oxtox Limited, Warren House, Mowbray Street, Stockport, SK1 3EJ UK
| | | | - Sarah Taylor
- Oxtox Limited, Warren House, Mowbray Street, Stockport, SK1 3EJ UK
| | | | - Murdo Black
- Oxtox Limited, Warren House, Mowbray Street, Stockport, SK1 3EJ UK
| | - Lindy Murphy
- Oxtox Limited, Warren House, Mowbray Street, Stockport, SK1 3EJ UK
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