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Pinckaers NET, Blankesteijn WM, Mircheva A, Shi X, Opperhuizen A, van Schooten FJ, Vrolijk MF. In Vitro Activation of Human Adrenergic Receptors and Trace Amine-Associated Receptor 1 by Phenethylamine Analogues Present in Food Supplements. Nutrients 2024; 16:1567. [PMID: 38892500 PMCID: PMC11174489 DOI: 10.3390/nu16111567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 06/21/2024] Open
Abstract
Pre-workout supplements are popular among sport athletes and overweight individuals. Phenethylamines (PEAs) and alkylamines (AA) are widely present in these supplements. Although the health effects of these analogues are not well understood yet, they are hypothesised to be agonists of adrenergic (ADR) and trace amine-associated receptors (TAARs). Therefore, we aimed to pharmacologically characterise these compounds by investigating their activating properties of ADRs and TAAR1 in vitro. The potency and efficacy of the selected PEAs and AAs was studied by using cell lines overexpressing human ADRα1A/α1B/α1D/α2a/α2B/β1/β2 or TAAR1. Concentration-response relationships are expressed as percentages of the maximal signal obtained by the full ADR agonist adrenaline or the full TAAR1 agonist phenethylamine. Multiple PEAs activated ADRs (EC50 = 34 nM-690 µM; Emax = 8-105%). Almost all PEAs activated TAAR1 (EC50 = 1.8-92 µM; Emax = 40-104%). Our results reveal the pharmacological profile of PEAs and AAs that are often used in food supplements. Several PEAs have strong agonistic properties on multiple receptors and resemble potencies of the endogenous ligands, indicating that they might further stimulate the already activated sympathetic nervous system in exercising athletes via multiple mechanisms. The use of supplements containing one, or a combination of, PEA(s) may pose a health risk for their consumers.
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Affiliation(s)
- Nicole E. T. Pinckaers
- Department of Pharmacology and Toxicology, Maastricht University, 6200 MD Maastricht, The Netherlands
- Research Institute of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6200 MD Maastricht, The Netherlands
| | - W. Matthijs Blankesteijn
- Department of Pharmacology and Toxicology, Maastricht University, 6200 MD Maastricht, The Netherlands
- School for Cardiovascular Diseases (CARIM), Maastricht University, 6200 MD Maastricht, The Netherlands
| | - Anastasiya Mircheva
- Department of Pharmacology and Toxicology, Maastricht University, 6200 MD Maastricht, The Netherlands
| | - Xiao Shi
- Research Service, Veterans Affairs Portland Health Care System, Portland, OR 97239, USA
- Department of Psychiatry, Oregon Health and Science University, Portland, OR 97239, USA
| | - Antoon Opperhuizen
- Department of Pharmacology and Toxicology, Maastricht University, 6200 MD Maastricht, The Netherlands
- Office for Risk Assessment and Research, Netherlands Food and Consumer Product Safety Authority, 3540 AA Utrecht, The Netherlands
| | - Frederik-Jan van Schooten
- Department of Pharmacology and Toxicology, Maastricht University, 6200 MD Maastricht, The Netherlands
- Research Institute of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6200 MD Maastricht, The Netherlands
| | - Misha F. Vrolijk
- Department of Pharmacology and Toxicology, Maastricht University, 6200 MD Maastricht, The Netherlands
- Research Institute of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6200 MD Maastricht, The Netherlands
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Piper T, Krombholz S, Thevis M. Carbon isotope ratios of phenethylamine and its urinary metabolite phenylacetylglutamine. Drug Test Anal 2023. [PMID: 38048815 DOI: 10.1002/dta.3616] [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: 09/28/2023] [Revised: 11/09/2023] [Accepted: 11/09/2023] [Indexed: 12/06/2023]
Abstract
Phenethylamine (PEA) is a naturally occurring trace amine that acts as a modulator in the central nervous system. It is widely sold as a dietary supplement and advertised for its mood enhancing effects and should support weight loss. It is prohibited in sports and itemized as a stimulant on the Prohibited List issued by the World Anti-Doping Agency (WADA). After oral administration of PEA, its urinary concentration is found only slightly elevated while metabolites of PEA show a significant increase. Besides 2-(2-hydroxyphenyl)acetamide sulfate, especially phenylacetylglutamine (PAG) was found at significantly elevated urinary concentrations after the administration. Due to large inter- and intra-individual variations in urinary concentrations of all metabolites, establishing a concentration or concentration ratio-based threshold remained complicated to unambiguously identify post-administration samples. In accordance with the approach employed in detecting testosterone misuse, the applicability of isotope ratio mass spectrometry to differentiate between endogenously elevated concentrations and PEA administrations was investigated. A method encompassing solid-phase extraction combined with acetylation and high-performance liquid chromatography (HPLC)-based clean-up was developed and validated for PEA. The more abundant metabolite PAG was purified by a direct injection approach on the HPLC and could be analyzed without the need for derivatization. Both methods were validated considering applicable WADA regulations. A reference population encompassing n = 57 samples was investigated to establish population-based thresholds considering the carbon isotope ratios (CIRs) found at natural abundance for PAG. The derived threshold was tested for its applicability by re-analysis of numerous post-administration samples encompassing single- and multi-dose trials.
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Affiliation(s)
- Thomas Piper
- Center for Preventive Doping Research, Institute of Biochemistry, German Sport University Cologne, Cologne, Germany
| | - Sophia Krombholz
- Center for Preventive Doping Research, Institute of Biochemistry, German Sport University Cologne, Cologne, Germany
| | - Mario Thevis
- Center for Preventive Doping Research, Institute of Biochemistry, German Sport University Cologne, Cologne, Germany
- European Monitoring Center for Emerging Doping Agents (EuMoCEDA), Cologne, Germany
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Jagim AR, Harty PS, Erickson JL, Tinsley GM, Garner D, Galpin AJ. Prevalence of adulteration in dietary supplements and recommendations for safe supplement practices in sport. Front Sports Act Living 2023; 5:1239121. [PMID: 37841887 PMCID: PMC10570429 DOI: 10.3389/fspor.2023.1239121] [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: 06/13/2023] [Accepted: 09/15/2023] [Indexed: 10/17/2023] Open
Abstract
The prevalence of dietary supplement use among athletes continues to rise with 60-80% of athletes often reporting current or previous use of dietary supplements. While select dietary ingredients have been shown to improve acute performance and enhance training adaptations over time, it is important to still consider the risk vs. reward for athletes before opting to consume a dietary supplement. Previous work has indicated that certain dietary supplements may pose risks for inadvertent doping, may be susceptible to mislabelling, could be banned by certain governing bodies of sport, or pose health risks for certain populations. The purpose of the current narrative review is to summarize the prevalence of adulteration in dietary sport supplement products, outline the risks of inadvertent doping for athletes, and highlight best practices regarding safe supplementation strategies. Analytical studies have found anywhere from 14 to 50% of samples analyzed from dietary supplement products have tested positive for anabolic agents or other prohibited substances. It is important for the consumer to adhere to safe supplementation strategies, which include following serving size recommendations, cross-referencing ingredient profiles with the list of prohibited substances, choosing quality products that have been verified by a third-party certification program, and being cognizant of consuming multiple dietary supplement products with overlapping ingredient profiles. Once these practices have been considered, it is reasonable for an athlete to utilize dietary supplements as a strategy to optimize performance and health, with a low risk of failing a drug test (adverse analytical finding) and experiencing adverse events.
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Affiliation(s)
- Andrew R. Jagim
- Sports Medicine, Mayo Clinic Health System, La Crosse, WI, United States
| | - Patrick S. Harty
- Exercise & Performance Nutrition Laboratory, Lindenwood University, St. Charles, MO, United States
| | - Jacob L. Erickson
- Sports Medicine, Mayo Clinic Health System, La Crosse, WI, United States
| | - Grant M. Tinsley
- Energy Balance & Body Composition Laboratory, Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, United States
| | - Dan Garner
- BioMolecular Athlete, LLC., Wilmington, DE, United States
| | - Andrew J. Galpin
- BioMolecular Athlete, LLC., Wilmington, DE, United States
- Department of Kinesiology, Center for Sport Performance, California State University, Fullerton, CA, United States
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Amidžić M, Banović Fuentes J, Banović J, Torović L. Notifications and Health Consequences of Unauthorized Pharmaceuticals in Food Supplements. PHARMACY 2023; 11:154. [PMID: 37888499 PMCID: PMC10609884 DOI: 10.3390/pharmacy11050154] [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: 08/16/2023] [Revised: 09/17/2023] [Accepted: 09/21/2023] [Indexed: 10/28/2023] Open
Abstract
Health concerns associated with the consumption of food supplements rise in parallel with the rise in the popularity and market availability of these products. In pursuit of data related to the unauthorized presence of pharmaceuticals in food supplements, the Rapid Alert System for Food and Feed (RASFF) database was searched for the 2011-2022 period. The most "popular" pharmaceuticals for the adulteration of food supplements were phosphodiesterase-5 inhibitors (235 records); anorexics and laxatives (76), including sibutramine and its active metabolite N-didesmethyl sibutramine, phenolphthalein and 2,4-dinitrophenol; stimulants, among which 1,3-dimethylamine (97), and synephrine (53) were the most numerous; nootropic drugs (24); anabolics and prohormones (16); and cannabinoid cannabidiol (14) (pending authorization as a novel food ingredient). Over 65% of notifications of interest were classified as serious risks, and over 80% of these were alert or border rejection notifications, mainly generated as a result of official control on the market. The alarming number of RASFF notifications should be considered a public health issue, demanding clear and targeted recommendation for action for the legislature and authorities. A harmonized nutrivigilance system should be considered as a tool to detect and scrutinize the adverse health effects of food supplements, along with measures to improve their safety, quality, and testing.
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Affiliation(s)
- Maja Amidžić
- Department of Pharmacy, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia; (M.A.); (J.B.F.)
| | - Jelena Banović Fuentes
- Department of Pharmacy, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia; (M.A.); (J.B.F.)
| | - Jovica Banović
- Department of Internal Medicine, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia;
| | - Ljilja Torović
- Department of Pharmacy, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia; (M.A.); (J.B.F.)
- Center for Medical and Pharmaceutical Investigations and Quality Control, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia
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Jeong HJ, Min S, Baek J, Kim J, Chung J, Jeong K. Real-Time Reaction Monitoring of Azide-Alkyne Cycloadditions Using Benchtop NMR-Based Signal Amplification by Reversible Exchange (SABRE). ACS MEASUREMENT SCIENCE AU 2023; 3:134-142. [PMID: 37090259 PMCID: PMC10120034 DOI: 10.1021/acsmeasuresciau.2c00065] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 05/03/2023]
Abstract
Rufinamide, possessing a triazole ring, is a new antiepileptic drug (AED) relatively well-absorbed in the lower dose range (10 mg/kg per day) and is currently being used in antiepileptic medications. Triazole derivatives can interact with various enzymes and receptors in biological systems via diverse non-covalent interactions, thus inducing versatile biological effects. Strain-promoted azide-alkyne cycloaddition (SPAAC) is a significant method for obtaining triazoles, even under physiological conditions, in the absence of a copper catalyst. To confirm the progress of chemical reactions under biological conditions, research on reaction monitoring at low concentrations is essential. This promising strategy is gaining acceptance for applications in fields such as drug development and nanoscience. We investigated the optimum Ir catalyst and magnetic field for achieving maximum proton hyperpolarization transfer in triazole derivatives. These reactions were analyzed using signal amplification by reversible exchange (SABRE) to overcome the limitations of low sensitivity in nuclear magnetic resonance spectroscopy, when monitoring copper-free click reactions in real time. Finally, a more versatile copper-catalyzed click reaction was monitored in real time, using a 60 MHz benchtop NMR system, in order to analyze the reaction mechanism.
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Affiliation(s)
- Hye Jin Jeong
- Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Sein Min
- Department
of Chemistry, Seoul Women’s University, Seoul 01797, South Korea
| | - Juhee Baek
- Department
of Chemistry, Seoul Women’s University, Seoul 01797, South Korea
| | - Jisu Kim
- Department
of Chemistry, Seoul Women’s University, Seoul 01797, South Korea
| | - Jean Chung
- Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Keunhong Jeong
- Department
of Physics and Chemistry, Korea Military
Academy, Seoul 01805, South Korea
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Osman A, Chittiboyina AG, Avula B, Ali Z, Adams SJ, Khan IA. Quality Consistency of Herbal Products: Chemical Evaluation. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 122:163-219. [PMID: 37392312 DOI: 10.1007/978-3-031-26768-0_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/03/2023]
Abstract
The widespread utility of herbal products has been rising considerably worldwide, including both developed and developing countries, leading to the rapid growth of their availability in the United States and globally. This substantial increase in consumption of herbal products has witnessed the emergence of adverse effects upon oral administration of certain of these products, and thus has raised safety concerns. The adverse effects caused by the consumption of certain botanical medicines occur primarily as a result of the poor quality of plant raw materials or the finished products, which inherently may affect safety and/or efficacy. The poor quality of some herbal products can be attributed to a lack of proper quality assurance and quality control. A high demand for herbal products that surpasses production, combined with a desire for maximizing profits, along with a lack of rigorous quality control within some manufacturing facilities have led to the emergence of quality inconsistencies. The underlying causes for this involve the misidentification of plant species, or their substitution, adulteration, or contamination with harmful ingredients. Analytical assessments have revealed there to be frequent and significant compositional variations between marketed herbal products. The inconsistency of the quality of herbal products can be ascribed essentially to the inconsistency of the botanical raw material quality used to manufacture the products. Thus, the quality assurance and the quality control of the botanical raw materials is may contribute significantly to improving the quality and consistency of the quality of the end products. The current chapter focuses on the chemical evaluation of quality and consistency of herbal products, including botanical dietary supplements. Different techniques, instruments, applications, and methods used in identifying, quantifying, and generating chemical fingerprints and chemical profiles of the ingredients of the herbal products will be described. The strengths and weaknesses of the various techniques available will be addressed. Limitations of the other approaches including morphological or microscopic analysis and DNA-based analysis will be presented.
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Affiliation(s)
- Ahmed Osman
- School of Pharmacy, National Center for Natural Products Research, The University of Mississippi, University, MS, 38677, USA.
| | - Amar G Chittiboyina
- School of Pharmacy, National Center for Natural Products Research, The University of Mississippi, University, MS, 38677, USA
| | - Bharathi Avula
- School of Pharmacy, National Center for Natural Products Research, The University of Mississippi, University, MS, 38677, USA
| | - Zulfiqar Ali
- School of Pharmacy, National Center for Natural Products Research, The University of Mississippi, University, MS, 38677, USA
| | - Sebastian J Adams
- School of Pharmacy, National Center for Natural Products Research, The University of Mississippi, University, MS, 38677, USA
| | - Ikhlas A Khan
- School of Pharmacy, National Center for Natural Products Research, The University of Mississippi, University, MS, 38677, USA
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El Azab NF, Abdelaal SH, Hassan SA, El-Kosasy AM. Dietary supplement mislabelling: case study on selected slimming products by developing a green isocratic HPLC method for their quality control. Sci Rep 2022; 12:22305. [PMID: 36566240 PMCID: PMC9790016 DOI: 10.1038/s41598-022-24830-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 11/21/2022] [Indexed: 12/25/2022] Open
Abstract
Nowadays, a huge population consumes Dietary supplements for losing weight. Products are often claimed as botanical blends, yet they aren't necessarily safe. Misleading labels are also very common. Thus, validated analytical methods for a wide range of slimming compounds are highly needed. Herein, we present a simple HPLC/PDA method for the quantitation of seven popular slimming ingredients. Studied compounds were Caffeine, Raspberry Ketone, trans-Resveratrol, p-Synephrine, p-Octopamine, p-Hordenine and 2-phenethylamine. After optimization, separation was carried out on a C18 column and mobile phase was a mixture of Acetonitrile:Water containing 0.1% phosphoric acid (50:50, %v/v). The last compound was eluted at 9.76 min. Separation was efficient showing baseline- separated symmetric peaks, without using any gradient programs, organic mobile phase modifiers or modified stationary phases. Method validation was done following ICH guidelines. Calibration curves were linear over wide concentration ranges and calculated LOD values were in the range 0.02-0.09 µg/mL. Method greenness was assessed using Analytical Eco-scale, GAPI and AGREE metric tools. Further, four random sample products purchased from online supplement stores were assayed. Results proved some mislabeling actions. To support our findings, standard addition was carried out and average % recoveries were 96.67 - 101.44% with standard deviation ≤ 2.83 between measurements.
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Affiliation(s)
- Noha F. El Azab
- grid.7269.a0000 0004 0621 1570Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Cairo, 11566 Egypt
| | - Sarah H. Abdelaal
- grid.7269.a0000 0004 0621 1570Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Cairo, 11566 Egypt
| | - Said A. Hassan
- grid.7776.10000 0004 0639 9286Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, 11562 Egypt
| | - Amira M. El-Kosasy
- grid.7269.a0000 0004 0621 1570Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Cairo, 11566 Egypt
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Physical, Nutritional, and Bioactive Properties of Mandacaru Cladode Flour ( Cereus jamacaru DC.): An Unconventional Food Plant from the Semi-Arid Brazilian Northeast. Foods 2022; 11:foods11233814. [PMID: 36496622 PMCID: PMC9739843 DOI: 10.3390/foods11233814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/14/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
In this study, we evaluated the physical, nutritional, and bioactive properties of mandacaru cladode flour (Cereus jamacaru DC.). The granulometric profile revealed particles with non-uniform geometry, flakiness, a rectangular tendency, and a non-homogeneous surface, with particle sizes ranging from 20 to 60 µm. The flour presented low water activity (0.423), a moisture content of 8.24 g/100 g, high ash (2.82 g/100 g), protein (5.18 g/100 g), and total carbohydrate contents (74.48 g/100 g), and low lipid contents (1.88 g/100 g). Mandacaru flour is an excellent source of insoluble dietary fiber (48.08 g/100 g), calcium (76.33%), magnesium (15.21%), and potassium (5.94%). Notably, 1H NMR analysis revealed the presence of N-methyltyramine. Using HPLC chromatography, glucose was identified as the predominant sugar (1.33 g/100 g), followed by four organic acids, especially malic acid (9.41 g/100 g) and citric acid (3.96 g/100 g). Eighteen phenolic compounds were detected, with relevant amounts of kaempferol (99.40 mg/100 g), myricetin (72.30 mg/100 g), and resveratrol (17.84 mg/100 g). The total phenolic compounds and flavonoids were 1285.47 mg GAE/100 g and 15.19 mg CE/100 g, respectively. The mean in vitro antioxidant activity values were higher using the FRAP method (249.45 µmol Trolox TEAC/100 g) compared to the ABTS•+ method (0.39 µmol Trolox TEAC/g). Finally, the ascorbic acid had a content of 35.22 mg/100 g. The results demonstrate the value of mandacaru as a little-explored species and an excellent matrix for the development of flours presenting good nutritional value and bioactive constituents with excellent antioxidant potential.
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McGriff SA, Chojnacki MR, Thorndike EB, Rice KC, Baumann MH, Schindler CW. Reinforcing effects of phenethylamine analogs found in dietary supplements. Psychopharmacology (Berl) 2022; 239:3723-3730. [PMID: 36190536 PMCID: PMC9590234 DOI: 10.1007/s00213-022-06246-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 09/17/2022] [Indexed: 10/10/2022]
Abstract
RATIONALE Synthetic phenethylamine (PEA) analogs, such as β-methylphenethylamine (BMPEA) and N,α-diethylphenethylamine (DEPEA), are often found in dietary supplements, despite regulations prohibiting their sale. PEA analogs are structurally related to amphetamine, and we have shown that BMPEA and DEPEA produce cardiovascular stimulation mimicking the effects of amphetamine. However, few studies have examined behavioral effects of BMPEA, DEPEA, and other PEA analogs. OBJECTIVES Here, we examined the reinforcing effects of α-ethylphenethylamine (AEPEA, 1 mg/kg/injection), DEPEA (1 mg/kg/injection), and BMPEA (3 mg/kg/injection) as compared to amphetamine (0.1 mg/kg/injection) using a fixed-ratio 1 self-administration paradigm in male rats. METHODS Male rats were trained in self-administration chambers containing 2 nose-poke holes. A nose-poke response in the active hole delivered drug or saline, whereas a nose-poke response in the inactive hole had no programmed consequence. Four groups of rats were initially trained for 10 days with the doses noted above. Upon acquisition of drug self-administration, a dose-effect function was determined by training rats on 3 additional doses for 3 days each. A separate group of rats was trained with saline. RESULTS Male rats self-administered each PEA analog and amphetamine, as shown by significant increases in active responses versus inactive responses. Subsequent dose-response testing showed clear differences in potency of the compounds. Amphetamine showed a typical inverted U-shaped dose-effect function, peaking at 0.1 mg/kg/injection. AEPEA and DEPEA also showed inverted dose-effect functions, with each peaking at 0.3 mg/kg/injection. BMPEA did not show an inverted U-shaped dose-effect function, but active responding slowly increased up to a dose of 6 mg/kg/injection. CONCLUSIONS Taken together, our findings indicate that dietary supplements containing PEA analogs may have significant abuse liability when used recreationally.
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Affiliation(s)
- Shelby A McGriff
- Designer Drug Research Unit, National Institute On Drug Abuse Intramural Research Program, Baltimore, MD, USA
| | - Michael R Chojnacki
- Designer Drug Research Unit, National Institute On Drug Abuse Intramural Research Program, Baltimore, MD, USA
| | - Eric B Thorndike
- Preclinical Pharmacology Section, National Institute On Drug Abuse Intramural Research Program, Baltimore, MD, USA
| | - Kenner C Rice
- Drug Design and Synthesis Section, National Institute On Drug Abuse and National Institute of Alcohol Abuse and Alcoholism Intramural Research Programs, Rockville, MD, USA
| | - Michael H Baumann
- Designer Drug Research Unit, National Institute On Drug Abuse Intramural Research Program, Baltimore, MD, USA
| | - Charles W Schindler
- Designer Drug Research Unit, National Institute On Drug Abuse Intramural Research Program, Baltimore, MD, USA.
- Preclinical Pharmacology Section, National Institute On Drug Abuse Intramural Research Program, Baltimore, MD, USA.
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Shah P, Patil S, Koppula P, Koppula S. One Pot Synthesis of Deterenol, a Sympathomimetic Ingredient of the Dietary Supplement Dexaprine. ORG PREP PROCED INT 2022. [DOI: 10.1080/00304948.2022.2066421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Parth Shah
- School of Liberal Studies and Education, Navrachana University, Vadodara, India
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Dietary Supplements as Source of Unintentional Doping. BIOMED RESEARCH INTERNATIONAL 2022; 2022:8387271. [PMID: 35496041 PMCID: PMC9054437 DOI: 10.1155/2022/8387271] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 03/24/2022] [Indexed: 01/26/2023]
Abstract
Background The substances used in sport could be divided into two major groups: those banned by the World Anti-Doping Agency and those which are not. The prohibited list is extremely detailed and includes a wide variety of both medicinal and nonmedicinal substances. Professional athletes are exposed to intense physical overload every day. They follow a relevant food regime and take specific dietary supplements, which is essential for the better recovery between trainings and competitions. However, the use of “nonprohibited” dietary supplements (DS) is not always completely safe. One of the risks associated with the use of dietary supplements is the risk of unintended doping—originating from contaminated products. The presence of undeclared compounds in the composition of DS is a serious concern. The aim of this study is to evaluate the risk of unintentional doping. Materials and Methods Literature search was done through PubMed, Science Direct, Google Scholar, and Web of Science. Studies investigating the presence of undeclared compounds, in dietary supplements, banned by WADA met the inclusion criteria. The last search was conducted in June 2021. The present review is based on a total of 50 studies, which investigated the presence of undeclared compounds in DS. Results The total number of analyzed DS is 3132, 875 of which were found to contain undeclared substances. Most frequently found undeclared substances are sibutramine and anabolic-androgenic steroids. Conclusion More than 28% of the analyzed dietary supplements pose a potential risk of unintentional doping. Athletes and their teams need to be aware of the issues associated with the use of DS. They should take great care before inclusion of DS in the supplementation regime.
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Zhao J, Wang M, Saroja SG, Khan IA. NMR technique and methodology in botanical health product analysis and quality control. J Pharm Biomed Anal 2022; 207:114376. [PMID: 34656935 DOI: 10.1016/j.jpba.2021.114376] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/03/2021] [Accepted: 09/14/2021] [Indexed: 12/13/2022]
Abstract
Botanicals have played an important role in maintaining human health and well-being throughout history. During the past few decades in particular, the use of botanical health products has gained more popularity. Whereas, quality, safety and efficacy concerns have continuously been critical issues due to the intrinsic chemical complexity of botanicals. Chemical analytical technologies play an imperative role in addressing these issues. Nuclear magnetic resonance (NMR) spectroscopy has proven to be a powerful and useful tool for the investigation of botanical health products. In this review, NMR techniques and methodologies that have been successfully applied to the research and development of botanical health products in all stages, from plants to products, are discussed and summarized. Furthermore, applications of NMR together with other analytical techniques in a variety of domains of botanical health products investigation, such as plant species differentiation, adulteration detection, and bio-activity evaluation, are discussed and illustrated with typical examples. This article provides an overview of the potential uses of NMR techniques and methodologies in an attempt to further promote their recognition and utilization in the field of botanical health products analysis and quality control.
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Affiliation(s)
- Jianping Zhao
- National Center for Natural Products Research (NCNPR), School of Pharmacy, University of Mississippi, University, MS 38677, USA.
| | - Mei Wang
- Natural Products Utilization Research Unit, Agricultural Research Service, US Department of Agriculture, University, MS 38677, USA
| | - Seethapathy G Saroja
- National Center for Natural Products Research (NCNPR), School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research (NCNPR), School of Pharmacy, University of Mississippi, University, MS 38677, USA; Division of Pharmacognosy, Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA.
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13
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Krombholz S, Thomas A, Piper T, Lagojda A, Kühne D, Thevis M. Urinary phenylethylamine metabolites as potential markers for sports drug testing purposes. Biomed Chromatogr 2021; 36:e5274. [PMID: 34729800 DOI: 10.1002/bmc.5274] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/16/2021] [Accepted: 10/25/2021] [Indexed: 11/07/2022]
Abstract
The misuse of 2-phenylethylamine (PEA) in sporting competitions is prohibited by the World Anti-Doping Agency. As it is endogenously produced, a method is required to differentiate between naturally elevated levels of PEA and the illicit administration of the drug. In 2015, a sulfo-conjugated metabolite [2-(2-hydroxyphenyl)acetamide sulfate (M1)] was identified, and pilot study data suggested that the ratio M1/PEA could be used as a marker indicating the oral application of PEA. Within this project, the required reference material of M1 was synthesized, single and multiple dose elimination studies were conducted and 369 native urine samples of athletes were analyzed as a reference population. While the oral administration of only 100 mg PEA did not affect urinary PEA concentrations, an increase in urinary concentrations of M1 was observed for all volunteers. However, urinary concentrations of both PEA and M1 showed relatively large inter-individual differences and establishing a cut-off-level for M1/PEA proved difficult. Consequently, a second metabolite, phenylacetylglutamine, was considered. Binary logistic regression demonstrated a significant (P < 0.05) correlation of the urinary M1 and phenylacetylglutamine concentrations with an oral administration of PEA, suggesting that assessing both analytes can assist doping control laboratories in identifying PEA misuse.
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Affiliation(s)
- Sophia Krombholz
- Center for Preventive Doping Research-Institute of Biochemistry, German Sport University Cologne, Cologne, Germany
| | - Andreas Thomas
- Center for Preventive Doping Research-Institute of Biochemistry, German Sport University Cologne, Cologne, Germany
| | - Thomas Piper
- Center for Preventive Doping Research-Institute of Biochemistry, German Sport University Cologne, Cologne, Germany
| | | | - Dirk Kühne
- Crop Science Division, Bayer AG, Monheim, Germany
| | - Mario Thevis
- Center for Preventive Doping Research-Institute of Biochemistry, German Sport University Cologne, Cologne, Germany
- European Monitoring Center for Emerging Doping Agents (EuMoCEDA), Cologne/Bonn, Germany
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14
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Cohen PA, Travis JC, Vanhee C, Ohana D, Venhuis BJ. Nine prohibited stimulants found in sports and weight loss supplements: deterenol, phenpromethamine (Vonedrine), oxilofrine, octodrine, beta-methylphenylethylamine (BMPEA), 1,3-dimethylamylamine (1,3-DMAA), 1,4-dimethylamylamine (1,4-DMAA), 1,3-dimethylbutylamine (1,3-DMBA) and higenamine. Clin Toxicol (Phila) 2021; 59:975-981. [DOI: 10.1080/15563650.2021.1894333] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Pieter A. Cohen
- Department of Medicine, Cambridge Health Alliance, Somerville, MA, USA
- Harvard Medical School, Boston, MA, USA
| | | | - Céline Vanhee
- Department of Medicines and Health Products, Sciensano, Belgium
| | - Dana Ohana
- Health Protection Center, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Bastiaan J. Venhuis
- Health Protection Center, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
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15
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Krug O, Thomas A, Thevis M. Mass spectrometric identification and characterization of urinary metabolites of isopropylnorsynephrine for doping control purposes. ACTA ACUST UNITED AC 2021. [DOI: 10.1002/ansa.202100004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Oliver Krug
- Center for Preventive Doping Research – Institute of Biochemistry German Sport University Cologne Cologne Germany
- European Monitoring Center for Emerging Doping Agents (EuMoCEDA) Cologne/Bonn Germany
| | - Andreas Thomas
- Center for Preventive Doping Research – Institute of Biochemistry German Sport University Cologne Cologne Germany
| | - Mario Thevis
- Center for Preventive Doping Research – Institute of Biochemistry German Sport University Cologne Cologne Germany
- European Monitoring Center for Emerging Doping Agents (EuMoCEDA) Cologne/Bonn Germany
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16
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de Sousa LN, Sant'ana DSP, Siqueira dos Santos RG, dos Santos Ribeiro AEA, da Costa CF, de Oliveira AP, Almeida JRGDS, Jucá DM, da Silva MTB, dos Santos AA, Palheta Junior RC. Involvement of serotonergic pathways in gastric dysmotility induced by fat burning nutritional supplements in mice. CURRENT RESEARCH IN PHARMACOLOGY AND DRUG DISCOVERY 2021; 2:100018. [PMID: 34909653 PMCID: PMC8663933 DOI: 10.1016/j.crphar.2021.100018] [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: 11/21/2020] [Revised: 01/20/2021] [Accepted: 02/01/2021] [Indexed: 11/30/2022] Open
Abstract
Fat burners are a category of nutritional supplements that are claimed to increase the metabolism and promote greater energy expenditure, leading to weight loss. However, little is known about the side effects on gastrointestinal motility. In this study, we evaluated the effect of ingestion with a fat burner named Thermbuterol® (THERM) on the gastric motility and food behavior of mice. THERM compounds were identified using nuclear magnetic resonance (NMR). Mice received variable doses of THERM (10, 50, 100 or 300 mg/kg, p.o.) or NaCl 0.15 M (control). Gastric emptying (GE) was assessed using the phenol red technique. Another set of mice was pretreated with intraperitoneal administration of hexamethonium (HEXA, 10 mg/kg), prazosin (PRAZ, 0.25 mg/kg), propranolol (PROP, 2 mg/kg), parachlorophenylalanine (PCPA, 300 mg/kg) or ondansetron (ONDA, 50 μg/kg) 30 min before THERM treatment for evaluation of GE. We assessed the gastrointestinal responsiveness in vitro as well as THERM's effects on food behavior. Caffeine was the major compound of THERM, identified by NMR. THERM 100 and 300 mg/kg decreased GE compared to the respective controls. Pretreatment with PRAZ or PROP did not prevent gastric dysmotility induced by THERM 100 mg/kg. However, the pretreatment with HEXA, ONDA or PCPA prevented GE delay induced by THERM. In vitro, THERM relaxed contractions in strips of longitudinal gastric fundus and duodenum. THERM also increased food intake, which was prevented by PCPA and ONDA treatments. THERM decreased GE of a liquid and increased food intake in mice, a phenomenon mediated by the autonomic nicotinic receptors and serotoninergic receptor.
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Affiliation(s)
| | | | | | | | - Camila F. da Costa
- Federal University of São Francisco Valley, Petrolina, Pernambuco, Brazil
| | | | | | - Davi M. Jucá
- Belo Horizonte University Center, Cristiano Machado Campus. Belo Horizonte, Minas Gerais, Brazil
| | - Moisés Tolentino Bento da Silva
- Laboratory of Exercise and Gastrointestinal Tract – Department of Physical Education, Federal University of Piauí, Teresina, Piauí, Brazil
| | - Armênio A. dos Santos
- Department of Physiology and Pharmacology, School of Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil
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17
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Sobiech M, Giebułtowicz J, Luliński P. Application of Magnetic Core-Shell Imprinted Nanoconjugates for the Analysis of Hordenine in Human Plasma-Preliminary Data on Pharmacokinetic Study after Oral Administration. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:14502-14512. [PMID: 33227193 PMCID: PMC7735731 DOI: 10.1021/acs.jafc.0c05985] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 11/03/2020] [Accepted: 11/07/2020] [Indexed: 05/06/2023]
Abstract
In this paper, we developed and validated a new analytical method to determine the pharmacokinetic profile of hordenine in plasma samples of human volunteers after oral administration of hordenine-rich dietary supplements. For this purpose, a magnetic molecularly imprinted sorbent was fabricated and characterized. The application of a magnetic susceptible material facilitates pretreatment step while working with a highly complex sample, reducing time and costs. An optimized, fast, and reliable separation step was combined with liquid chromatography tandem mass spectrometry, providing an analytical method for analysis of hordenine in human plasma after dietary supplement intake. The method was validated (lower limit of quantification of 0.05 μg/L), enabling the pharmacokinetic profile of hordenine to be determined. The highest concentration of hordenine was noted after 65 ± 14 min, reaching the value of 16.4 ± 7.8 μg/L. The average t1/2 was 54 ± 19 min. The apparent volume of distribution was 6000 ± 2600 L (66 ± 24 L/kg when adjusted for weight).
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Affiliation(s)
- Monika Sobiech
- Department
of Organic Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Joanna Giebułtowicz
- Department
of Bioanalysis and Drugs Analysis, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Piotr Luliński
- Department
of Organic Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
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18
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Schindler CW, Thorndike EB, Partilla JS, Rice KC, Baumann MH. Amphetamine-like Neurochemical and Cardiovascular Effects of α-Ethylphenethylamine Analogs Found in Dietary Supplements. J Pharmacol Exp Ther 2020; 376:118-126. [PMID: 33082158 PMCID: PMC7788351 DOI: 10.1124/jpet.120.000129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 10/16/2020] [Indexed: 11/27/2022] Open
Abstract
Dietary supplements often contain additives not listed on the label, including α-ethyl homologs of amphetamine such as N,α-diethylphenethylamine (DEPEA). Here, we examined the neurochemical and cardiovascular effects of α-ethylphenethylamine (AEPEA), N-methyl-α-ethylphenethylamine (MEPEA), and DEPEA as compared with the effects of amphetamine. All drugs were tested in vitro using uptake inhibition and release assays for monoamine transporters. As expected, amphetamine acted as a potent and efficacious releasing agent at dopamine transporters (DAT) and norepinephrine transporters (NET) in vitro. AEPEA and MEPEA were also releasers at catecholamine transporters, with greater potency at NET than DAT. DEPEA displayed fully efficacious release at NET but weak partial release at DAT (i.e., 40% of maximal effect). In freely moving, conscious male rats fitted with biotelemetry transmitters for physiologic monitoring, amphetamine (0.1–3.0 mg/kg, s.c.) produced robust dose-related increases in blood pressure (BP), heart rate (HR), and motor activity. AEPEA (1–10 mg/kg, s.c.) produced significant increases in BP but not HR or activity, whereas DEPEA and MEPEA (1–10 mg/kg, s.c.) increased BP, HR, and activity. In general, the phenethylamine analogs were approximately 10-fold less potent than amphetamine. Our results show that α-ethylphenethylamine analogs are biologically active. Although less potent than amphetamine, they produce cardiovascular effects that could pose risks to humans. Given that MEPEA and DEPEA increased locomotor activity, these substances may also have significant abuse potential.
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Affiliation(s)
- Charles W Schindler
- Designer Drug Research Unit (C.W.S., J.S.P., M.H.B.) and Preclinical Pharmacology Section (C.W.S., E.B.T.), National Institute on Drug Abuse Intramural Research Program, Baltimore, Maryland and Drug Design and Synthesis Section, National Institute on Drug Abuse and National Institute of Alcohol Abuse and Alcoholism Intramural Research Programs, Rockville, Maryland (K.C.R.)
| | - Eric B Thorndike
- Designer Drug Research Unit (C.W.S., J.S.P., M.H.B.) and Preclinical Pharmacology Section (C.W.S., E.B.T.), National Institute on Drug Abuse Intramural Research Program, Baltimore, Maryland and Drug Design and Synthesis Section, National Institute on Drug Abuse and National Institute of Alcohol Abuse and Alcoholism Intramural Research Programs, Rockville, Maryland (K.C.R.)
| | - John S Partilla
- Designer Drug Research Unit (C.W.S., J.S.P., M.H.B.) and Preclinical Pharmacology Section (C.W.S., E.B.T.), National Institute on Drug Abuse Intramural Research Program, Baltimore, Maryland and Drug Design and Synthesis Section, National Institute on Drug Abuse and National Institute of Alcohol Abuse and Alcoholism Intramural Research Programs, Rockville, Maryland (K.C.R.)
| | - Kenner C Rice
- Designer Drug Research Unit (C.W.S., J.S.P., M.H.B.) and Preclinical Pharmacology Section (C.W.S., E.B.T.), National Institute on Drug Abuse Intramural Research Program, Baltimore, Maryland and Drug Design and Synthesis Section, National Institute on Drug Abuse and National Institute of Alcohol Abuse and Alcoholism Intramural Research Programs, Rockville, Maryland (K.C.R.)
| | - Michael H Baumann
- Designer Drug Research Unit (C.W.S., J.S.P., M.H.B.) and Preclinical Pharmacology Section (C.W.S., E.B.T.), National Institute on Drug Abuse Intramural Research Program, Baltimore, Maryland and Drug Design and Synthesis Section, National Institute on Drug Abuse and National Institute of Alcohol Abuse and Alcoholism Intramural Research Programs, Rockville, Maryland (K.C.R.)
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19
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Jiang W, Kim B, Chae H. Phenethylamine ligand engineering of red InP quantum dots for improving the efficiency of quantum dot light-emitting diodes. OPTICS LETTERS 2020; 45:5800-5803. [PMID: 33057288 DOI: 10.1364/ol.405520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 09/10/2020] [Indexed: 06/11/2023]
Abstract
In this Letter, red-emitting multi-shelled indium phosphide (InP) quantum dots (QDs) were synthesized using the safe phosphorus precursor tris(dimethylamino)phosphine ((DMA)3P). The long-chain ligands of oleylamine (OAm) in the (DMA)3P phosphide source-based InP QDs were partially exchanged with short-chain ligands of phenethylamine (PEA) in the core formation process, and the resulting InP QDs were applied to quantum dot light-emitting diodes (QLEDs). The short-chain ligands of PEA with the π-conjugated benzene ring improved the charge transport and electrical conduction of the QLEDs with (DMA)3P phosphide source-based InP QDs. The PEA-engineering of InP QDs improved their maximum quantum yield from 71% to 85.5% with the full-width at half-maximum of 62 nm. Furthermore, the maximum external quantum efficiency of QLEDs with the PEA-engineered InP QDs improved from 1.9% to 3.5%, and their maximum power efficiency increased from 2.8 to 6.0 lm/W. This Letter demonstrates that engineering the core formation process with the short-chain ligands of PEA provides an efficient and facile way to improve the charge transport and electrical conduction in (DMA)3P phosphide source-based InP QLEDs for electroluminescent devices.
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20
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Jones NS, Comparin JH. Interpol review of controlled substances 2016-2019. Forensic Sci Int Synerg 2020; 2:608-669. [PMID: 33385148 PMCID: PMC7770462 DOI: 10.1016/j.fsisyn.2020.01.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 01/23/2020] [Indexed: 12/14/2022]
Abstract
This review paper covers the forensic-relevant literature in controlled substances from 2016 to 2019 as a part of the 19th Interpol International Forensic Science Managers Symposium. The review papers are also available at the Interpol website at: https://www.interpol.int/content/download/14458/file/Interpol%20Review%20Papers%202019.pdf.
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Affiliation(s)
- Nicole S. Jones
- RTI International, Applied Justice Research Division, Center for Forensic Sciences, 3040 E. Cornwallis Road, Research Triangle Park, NC, 22709-2194, USA
| | - Jeffrey H. Comparin
- United States Drug Enforcement Administration, Special Testing and Research Laboratory, USA
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21
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Nasr JJ, Shalan S. Validated 1H and 19F nuclear magnetic resonance for the quantitative determination of the hepatitis C antiviral drugs sofosbuvir, ledipasvir, and daclatasvir in tablet dosage forms. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104437] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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22
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Avula B, Bae JY, Chittiboyina AG, Wang YH, Wang M, Khan IA. Liquid chromatography-quadrupole time of flight mass spectrometric method for targeted analysis of 111 nitrogen-based compounds in weight loss and ergogenic supplements. J Pharm Biomed Anal 2019; 174:305-323. [DOI: 10.1016/j.jpba.2019.05.066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 05/28/2019] [Accepted: 05/29/2019] [Indexed: 12/22/2022]
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23
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Khan A, Choudhary G, Ivo T, Jeon H, Benedetti E. Real-Time Intraoperative Assessment of Microcirculation in Living-Donor Small Bowel Transplant: A Case Report. EXP CLIN TRANSPLANT 2019; 19:1110-1113. [PMID: 31324135 DOI: 10.6002/ect.2019.0039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Living-donor small bowel transplant has emerged as a modality to transplant patients with short bowel syndrome without prolonged wait time, albeit at the cost of technical challenges associated with vascular anastomosis due to the small size of vessels. Suboptimal perfusion in a transplanted bowel can lead to a devastating outcome, and clinical judgment alone is not completely reliable for assessment of bowel microcirculation. Here, we report a 55-year-old female patient who underwent flow cytometric cross-match-positive living-donor bowel transplant from her daughter. Initial suboptimal perfusion prompted a revision of the arterial anastomoses. Despite normal Doppler signals over the mesenteric vessels, the bowel had a variegated appearance. The microcirculation of the bowel wall was subsequently assessed in a real-time fashion by indocyanine green fluorescence angiography, which showed improved perfusion indices with time. Hence, this simple test helped us to avoid another unnecessary exploration and revision of the anastomoses. At present, the patient is thriving on an enteral diet. This case underpins the importance of real-time intraoperative assessment of bowel per-fusion and microcirculation in difficult cases. These assessments are needed to help surgeons identify tissues at risk for ischemia and necrosis, thereby allowing for maneuvers to improve intestinal viability.
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Affiliation(s)
- Arshad Khan
- From the Division of Transplantation and Division of Surgery, College of Medicine, The University of Illinois at Chicago, Chicago, Illinois, USA.,From the Department of Surgery, Altru Health System, Grand Forks, North Dakota, USA
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24
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Allahverdiyeva S, Keskin E, Pınar PT, Yardım Y, Şentürk Z. First Electroanalytical Methodology for the Determination of Hordenine in Dietary Supplements using a Boron‐doped Diamond Electrode. ELECTROANAL 2019. [DOI: 10.1002/elan.201900365] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Shabnam Allahverdiyeva
- Van Yuzuncu Yil University, Faculty of ScienceDepartment of Biochemistry 65080 Van Turkey
| | - Ertuğrul Keskin
- Adiyaman University, Faculty of PharmacyDepartment of Analytical Chemistry 02040 Adiyaman Turkey
| | - Pınar Talay Pınar
- Van Yuzuncu Yil University, Faculty of PharmacyDepartment of Analytical Chemistry 65080 Van Turkey
| | - Yavuz Yardım
- Van Yuzuncu Yil University, Faculty of PharmacyDepartment of Analytical Chemistry 65080 Van Turkey
| | - Zühre Şentürk
- Van Yuzuncu Yil University, Faculty of ScienceDepartment of Analytical Chemistry 65080 Van Turkey
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25
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Quantification of drugs encapsulated in liposomes by 1H NMR. Colloids Surf B Biointerfaces 2019; 179:414-420. [DOI: 10.1016/j.colsurfb.2019.03.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 03/15/2019] [Accepted: 03/18/2019] [Indexed: 12/26/2022]
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26
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Thevis M, Kuuranne T, Geyer H. Annual banned-substance review: Analytical approaches in human sports drug testing. Drug Test Anal 2019; 11:8-26. [DOI: 10.1002/dta.2549] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 11/18/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Mario Thevis
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Cologne Germany
- European Monitoring Center for Emerging Doping Agents; Cologne Germany
| | - Tiia Kuuranne
- Swiss Laboratory for Doping Analyses; University Center of Legal Medicine, Genève and Lausanne, Centre Hospitalier Universitaire Vaudois and University of Lausanne; Epalinges Switzerland
| | - Hans Geyer
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Cologne Germany
- European Monitoring Center for Emerging Doping Agents; Cologne Germany
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Abstract
The macrocyclic host cucurbit[6]uril forms either partial inclusion or perching complexes with phenethylamine drugs ephedrine, synephrine and octopamine.
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Affiliation(s)
- Oksana Danylyuk
- Institute of Physical Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
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