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Kintz P, Ameline A. Testing for 2,4-dinitrophenol in human hair by LC-MS/MS and interpretation issues. J Pharm Biomed Anal 2024; 237:115795. [PMID: 37844362 DOI: 10.1016/j.jpba.2023.115795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/07/2023] [Accepted: 10/11/2023] [Indexed: 10/18/2023]
Abstract
2,4-dinitrophenol, initially developed for industrial purposes, is used in the synthesis of dyes and various drugs, including herbicides, fungicides and insecticides. Incidentally, it was discovered that 2,4-dinitrophenol increases human basal metabolic rate. As a consequence, people who want to loose weight can abuse 2,4-dinitrophenol. It is a compound of choice for bodybuilders who abuse it in combination with anabolic steroids and clenbuterol. Numerous deaths have been attributed to 2,4-dinitrophenol. Up to now, 2,4-dinitrophenol was never reported in hair. The authors present an original method to test for 2,4-dinitrophenol in hair after methanolic extraction using LC-MS/MS. The limit of detection of the procedure is 0.01 ng/mg and the method was fully validated in the range 0.1-50 ng/mg. 2,4-dinitrophenol tested positive in the brown hair of a subject deceased from acute poisoning at 5.15, 13.06 and 25.48 ng/mg in the 3 × 3 cm segments. As excessive sweating is associated to 2,4-dinitrophenol abuse, major contribution of this matrix must be taken into consideration when interpreting the data. In this case, there was a regular increase of 2,4-dinitrophenol concentration from root to tip. This specific pattern can be the consequence of sweat contamination, i.e., the older hair being for a longer time in contact with sweat.
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Affiliation(s)
- Pascal Kintz
- X-Pertise Consulting, 42 rue principale, 67206 Mittelhausbergen, France; Institut de Médecine légale, 11 rue Humann, 67000 Strasbourg, France.
| | - Alice Ameline
- Institut de Médecine légale, 11 rue Humann, 67000 Strasbourg, France
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Herrnhold M, Hamp I, Plettenburg O, Jastroch M, Keuper M. Adverse bioenergetic effects of N-acyl amino acids in human adipocytes overshadow beneficial mitochondrial uncoupling. Redox Biol 2023; 66:102874. [PMID: 37683300 PMCID: PMC10493596 DOI: 10.1016/j.redox.2023.102874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 08/31/2023] [Accepted: 09/01/2023] [Indexed: 09/10/2023] Open
Abstract
OBJECTIVE Enhancing energy turnover via uncoupled mitochondrial respiration in adipose tissue has great potential to improve human obesity and other metabolic complications. However, the amount of human brown adipose tissue and its uncoupling protein 1 (UCP1) is low in obese patients. Recently, a class of endogenous molecules, N-acyl amino acids (NAAs), was identified as mitochondrial uncouplers in murine adipocytes, presumably acting via the adenine nucleotide translocator (ANT). Given the translational potential, we investigated the bioenergetic effects of NAAs in human adipocytes, characterizing beneficial and adverse effects, dose ranges, amino acid derivatives and underlying mechanisms. METHOD NAAs with neutral (phenylalanine, leucine, isoleucine) and polar (lysine) residues were synthetized and assessed in intact and permeabilized human adipocytes using plate-based respirometry. The Seahorse technology was applied to measure bioenergetic parameters, dose-dependency, interference with UCP1 and adenine nucleotide translocase (ANT) activity, as well as differences to the established chemical uncouplers niclosamide ethanolamine (NEN) and 2,4-dinitrophenol (DNP). RESULT NAAs with neutral amino acid residues potently induce uncoupled respiration in human adipocytes in a dose-dependent manner, even in the presence of the UCP1-inhibitor guanosine diphosphate (GDP) and the ANT-inhibitor carboxyatractylate (CAT). However, neutral NAAs significantly reduce maximal oxidation rates, mitochondrial ATP-production, coupling efficiency and reduce adipocyte viability at concentrations above 25 μM. The in vitro therapeutic index (using induced proton leak and viability as determinants) of NAAs is lower than that of NEN and DNP. CONCLUSION NAAs are potent mitochondrial uncouplers in human adipocytes, independent of UCP1 and ANT. However, previously unnoticed adverse effects harm adipocyte functionality, reduce the therapeutic index of NAAs in vitro and therefore question their suitability as anti-obesity agents without further chemical modifications.
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Affiliation(s)
- Marie Herrnhold
- Department of Molecular Biosciences, The Wenner-Gren Institute, The Arrhenius Laboratories F3, Stockholm University, SE-106 91, Stockholm, Sweden
| | - Isabel Hamp
- Institute of Medicinal Chemistry, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany; Institute of Organic Chemistry, Leibniz Universität Hannover, Hannover, Germany
| | - Oliver Plettenburg
- Institute of Medicinal Chemistry, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany; Institute of Organic Chemistry, Leibniz Universität Hannover, Hannover, Germany
| | - Martin Jastroch
- Department of Molecular Biosciences, The Wenner-Gren Institute, The Arrhenius Laboratories F3, Stockholm University, SE-106 91, Stockholm, Sweden
| | - Michaela Keuper
- Department of Molecular Biosciences, The Wenner-Gren Institute, The Arrhenius Laboratories F3, Stockholm University, SE-106 91, Stockholm, Sweden.
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Aribal P, Alver EN, Kaltalioglu K, Balabanli B, Ebegil M, Coskun-Cevher S. The relationship between experimental 2,4-Dinitrophenol administration and neurological oxidative stress: in terms of dose, time and gender differences. Mol Cell Biochem 2022; 478:1161-1168. [PMID: 36562917 DOI: 10.1007/s11010-022-04624-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 11/28/2022] [Indexed: 12/24/2022]
Abstract
Although 2,4-DNP is claimed to promote fast weight reduction, it is also related with an intolerable high risk of serious side effects to various tissues. On the other hand, it is known to have neuroprotective effects. These different effects of 2,4-DNP may be due to the administration conditions. For this reason, in this study, it was aimed for the first time to clarify the oxidative changes that occur in the brain during the use of 2,4-DNP, depending on the dose, time and gender. For this purpose, 60 Wistar rats (30 male, 30 female) were divided into ten groups: control groups, short-term/long-term groups and low dose/high dose groups. Except for the control groups, 2,4-DNP was administered to the other groups by oral gavage. End of the experiment, thiobarbituric acid-reactive substances (TBARs), glutathione (GSH), nitric oxide (NOx) and ascorbic acid (AA) levels were measured in the brain tissues of sacrificed animals. 2,4-DNP administration showed attenuation impact on oxidative stress depending on both dose, time and gender. It can be said that it is more beneficial in terms of neuroprotection, especially in the short-term and male groups. In conclusion, our findings suggest that, depending on the dose, time, and gender, 2,4-DNP may be beneficial in the treatment of neurodegenerative disorders.
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Affiliation(s)
- Pınar Aribal
- Department of Biology, Science Faculty, Gazi University, Ankara, Turkey
| | - Elif Naz Alver
- Department of Biology, Science Faculty, Gazi University, Ankara, Turkey
| | - Kaan Kaltalioglu
- Vocational School of Espiye, Giresun University, Giresun, Turkey
| | | | - Meral Ebegil
- Department of Statistics, Science Faculty, Gazi University, Ankara, Turkey
| | - Sule Coskun-Cevher
- Department of Biology, Science Faculty, Gazi University, Ankara, Turkey.
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Dispersive Membrane Microextraction of Substituted Phenols from Honey Samples and a Brief Outlook on Its Sustainability Using Analytical Eco-Scale and Analytical GREEnness Metric Approach. MEMBRANES 2022; 12:membranes12070649. [PMID: 35877851 PMCID: PMC9321667 DOI: 10.3390/membranes12070649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 11/17/2022]
Abstract
Honey is part and parcel of our daily nutrition, but in recent times it has been reported to be tainted by the presence of polar substituted phenols purported from the use of pesticides, herbicides, antimicrobial agents, etc. Honey’s viscous nature and matrix complexity often result in analytical chemists resorting to derivatization for the detection of polar analytes such as substituted phenols. This study aims to overcome the matrix effect without derivatization and offer a more sustainable solution with notable sensitivity and selectivity using dispersive membrane microextraction alongside high-performance liquid chromatography (DMME–HPLC) with sporopollenin–methylimidazolium-based mixed matrix membrane (Sp–MIM-MMM). The DMME–HPLC approach successfully determined the presence of mono- and disubstituted phenols from unspiked honey samples with concentrations ranging from 7.8 to 154.7 ng/mL. The sustainability of the proposed method was also validated using the Analytical Eco-Scale (AES) and the Analytical GREEnness Metric (AGREE) where an excellent score of 94 and the encouraging score of 0.72 were recorded, respectively.
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Vlasova KY, Ostroverkhov P, Vedenyapina D, Yakimova T, Trusova A, Lomakina GY, Vodopyanov SS, Grin M, Klyachko N, Chekhonin V, Abakumov M. Liposomal Form of 2,4-Dinitrophenol Lipophilic Derivatives as a Promising Therapeutic Agent for ATP Synthesis Inhibition. NANOMATERIALS 2022; 12:nano12132162. [PMID: 35808003 PMCID: PMC9268429 DOI: 10.3390/nano12132162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/07/2022] [Accepted: 06/14/2022] [Indexed: 12/10/2022]
Abstract
Mitochondrial uncoupler 2,4-dinitrophenol (2,4-DNP) is a promising antidiabetic and antiobesity agent. Its clinical use is limited by a narrow dynamic range and accumulation in non-target sensitive organs, which results in whole-body toxicity. A liposomal formulation could enable the mentioned drawbacks to be overcome and simplify the liver-targeted delivery and sustained release of 2,4-DNP. We synthesized 2,4-DNP esters with carboxylic acids of various lipophilic degrees using carboxylic acid chloride and then loaded them into liposomes. We demonstrated the effective increase in the entrapment of 2,4-DNP into liposomes when esters were used. Here, we examined the dependence of the sustained release of 2,4-DNP from liposomes on the lipid composition and LogPoct of the ester. We posit that the optimal chain length of the ester should be close to the palmitic acid and the lipid membrane should be composed of phospholipids with a certain phase transition point depending on the desired release rate. The increased effect of the ATP synthesis inhibition of the liposomal forms of caproic and palmitic acid esters compared to free molecules in liver hepatocytes was demonstrated. The liposomes’ stability could well be responsible for this result. This work demonstrates promising possibilities for the liver-targeted delivery of the 2,4-DNP esters with carboxylic acids loaded into liposomes for ATP synthesis inhibition.
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Affiliation(s)
- Kseniya Yu. Vlasova
- Department of Medical Nanobiotechnology, Pirogov Russian National Research Medical University, 117997 Moscow, Russia; (K.Y.V.); (V.C.)
- School of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (G.Y.L.); (N.K.)
| | - Petr Ostroverkhov
- Department of Chemistry and Technology of Biologically Active Compounds, Medical and Organic Chemistry, Lomonosov Institute of Fine Chemical Technologies MIREA-Russian Technological University (RTU MIREA), 119571 Moscow, Russia; (P.O.); (D.V.); (M.G.)
| | - Daria Vedenyapina
- Department of Chemistry and Technology of Biologically Active Compounds, Medical and Organic Chemistry, Lomonosov Institute of Fine Chemical Technologies MIREA-Russian Technological University (RTU MIREA), 119571 Moscow, Russia; (P.O.); (D.V.); (M.G.)
| | - Tamara Yakimova
- Faculty of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia; (T.Y.); (A.T.)
| | - Alla Trusova
- Faculty of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia; (T.Y.); (A.T.)
| | | | - Stepan Sergeevich Vodopyanov
- College of New Materials and Nanotechnologies, National University of Science and Technology (MISIS), 119049 Moscow, Russia;
| | - Mikhail Grin
- Department of Chemistry and Technology of Biologically Active Compounds, Medical and Organic Chemistry, Lomonosov Institute of Fine Chemical Technologies MIREA-Russian Technological University (RTU MIREA), 119571 Moscow, Russia; (P.O.); (D.V.); (M.G.)
| | - Natalia Klyachko
- School of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (G.Y.L.); (N.K.)
| | - Vladimir Chekhonin
- Department of Medical Nanobiotechnology, Pirogov Russian National Research Medical University, 117997 Moscow, Russia; (K.Y.V.); (V.C.)
- V. Serbsky National Medical Research Center for Psychiatry and Narcology, 119034 Moscow, Russia
| | - Maxim Abakumov
- Department of Medical Nanobiotechnology, Pirogov Russian National Research Medical University, 117997 Moscow, Russia; (K.Y.V.); (V.C.)
- College of New Materials and Nanotechnologies, National University of Science and Technology (MISIS), 119049 Moscow, Russia;
- V. Serbsky National Medical Research Center for Psychiatry and Narcology, 119034 Moscow, Russia
- Correspondence:
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Peng A, Wang Y, Yin L, Chen Z, Gu C. Halide salts induced the photodegradation of a fat-burning compound 2, 4-dinitrophenol by iron-montmorillonite. CHEMOSPHERE 2022; 291:132694. [PMID: 34743870 DOI: 10.1016/j.chemosphere.2021.132694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 10/08/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
Natural montmorillonite clay and anthropogenic organic pollutants frequently coexist in the estuarine environment where freshwater from rivers mixes with saltwater from the ocean. In this environment, the sharply changed aqueous chemistry especially salt content could significantly alter the photochemical behaviors of pollutants. However, this process was rarely investigated. In this study, the photodegradation of a representative anthropogenic weight-loss compound 2,4-dinitrophenol in the presence of Fe3+-montmorillonite and different halide salts was systematically investigated. Results show that 2,4-dinitrophenol was resistant to photodegradation by Fe3+-montmorillonite alone, but the presence of NaCl, NaBr, and sea salts in the system can evoke significant 2,4-dinitrophenol degradation. The enhancement effect was further elucidated as the replacement reaction between the clay associated Fe3+ and Na + which leads to the release of more interlayer Fe3+ from montmorillonite, resulting in increased production of high active hydroxyl radicals (˙OH) that can substantially damage 2,4-dinitrophenol molecule. In addition, halogen radicals from the reaction of halide ions with ˙OH were also confirmed to participate in 2,4-dinitrophenol degradation. Overall, this study implied that the changed salty condition in the estuarine water could induce the rapid transformation of organic pollutants that move from freshwater and have relatively stable photochemical properties.
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Affiliation(s)
- Anping Peng
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, 300384, China
| | - Yi Wang
- College of Environmental Engineering, Nanjing Institute of Technology, Nanjing, Jiangsu, 211167, China
| | - Lichun Yin
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Zeyou Chen
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China.
| | - Cheng Gu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093, China
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Sedillo-Torres IY, Hernández-Rangel ÁO, Gómez-y-Gómez Y, Cortés-Avalos D, García-Pérez BE, Villalobos-Rocha JC, Hernández-Rodríguez CH, Zepeda-Vallejo LG, Estrada-de los Santos P, Vargas-Díaz ME, Ibarra JA. Hibiscus Acid from Hibiscus sabdariffa L. Inhibits Flagellar Motility and Cell Invasion in Salmonella enterica. Molecules 2022; 27:molecules27030655. [PMID: 35163919 PMCID: PMC8839027 DOI: 10.3390/molecules27030655] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/06/2022] [Accepted: 01/14/2022] [Indexed: 01/13/2023] Open
Abstract
Extracts of Hibiscus sabdariffa L. (commonly called Rosselle or "Jamaica flower" in Mexico) have been shown to have antibiotic and antivirulence properties in several bacteria. Here, an organic extract of H. sabdariffa L. is shown to inhibit motility in Salmonella enterica serovars Typhi and Typhimurium. The compound responsible for this effect was purified and found to be the hibiscus acid. When tested, this compound also inhibited motility and reduced the secretion of both flagellin and type III secretion effectors. Purified hibiscus acid was not toxic in tissue-cultured eukaryotic cells, and it was able to reduce the invasion of Salmonella Typhimurium in epithelial cells. Initial steps to understand its mode of action showed it might affect membrane proton balance.
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Affiliation(s)
- Ixchell Y. Sedillo-Torres
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N Col. Santo Tomás Alc. Miguel Hidalgo, Ciudad de México 11340, Mexico; (I.Y.S.-T.); (D.C.-A.); (B.E.G.-P.); (J.C.V.-R.); (C.H.H.-R.); (P.E.-d.l.S.)
| | - Álvaro O. Hernández-Rangel
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N Col. Santo Tomás Alc. Miguel Hidalgo, Ciudad de México 11340, Mexico; (Á.O.H.-R.); (L.G.Z.-V.); (M.E.V.-D.)
| | - Yolanda Gómez-y-Gómez
- Unidad Profesional Interdisciplinaria de Biotecnología, Instituto Politécnico Nacional, Av. Acueducto s/n Barrio La Laguna, Ticomán, Alc. Gustavo A. Madero, Ciudad de México 07340, Mexico;
| | - Daniel Cortés-Avalos
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N Col. Santo Tomás Alc. Miguel Hidalgo, Ciudad de México 11340, Mexico; (I.Y.S.-T.); (D.C.-A.); (B.E.G.-P.); (J.C.V.-R.); (C.H.H.-R.); (P.E.-d.l.S.)
| | - Blanca Estela García-Pérez
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N Col. Santo Tomás Alc. Miguel Hidalgo, Ciudad de México 11340, Mexico; (I.Y.S.-T.); (D.C.-A.); (B.E.G.-P.); (J.C.V.-R.); (C.H.H.-R.); (P.E.-d.l.S.)
| | - Juan C. Villalobos-Rocha
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N Col. Santo Tomás Alc. Miguel Hidalgo, Ciudad de México 11340, Mexico; (I.Y.S.-T.); (D.C.-A.); (B.E.G.-P.); (J.C.V.-R.); (C.H.H.-R.); (P.E.-d.l.S.)
| | - César H. Hernández-Rodríguez
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N Col. Santo Tomás Alc. Miguel Hidalgo, Ciudad de México 11340, Mexico; (I.Y.S.-T.); (D.C.-A.); (B.E.G.-P.); (J.C.V.-R.); (C.H.H.-R.); (P.E.-d.l.S.)
| | - Luis Gerardo Zepeda-Vallejo
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N Col. Santo Tomás Alc. Miguel Hidalgo, Ciudad de México 11340, Mexico; (Á.O.H.-R.); (L.G.Z.-V.); (M.E.V.-D.)
| | - Paulina Estrada-de los Santos
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N Col. Santo Tomás Alc. Miguel Hidalgo, Ciudad de México 11340, Mexico; (I.Y.S.-T.); (D.C.-A.); (B.E.G.-P.); (J.C.V.-R.); (C.H.H.-R.); (P.E.-d.l.S.)
| | - María Elena Vargas-Díaz
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N Col. Santo Tomás Alc. Miguel Hidalgo, Ciudad de México 11340, Mexico; (Á.O.H.-R.); (L.G.Z.-V.); (M.E.V.-D.)
| | - Jose Antonio Ibarra
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N Col. Santo Tomás Alc. Miguel Hidalgo, Ciudad de México 11340, Mexico; (I.Y.S.-T.); (D.C.-A.); (B.E.G.-P.); (J.C.V.-R.); (C.H.H.-R.); (P.E.-d.l.S.)
- Correspondence: or ; Tel.: +52-55-5729-6000 (ext. 62482)
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Chandrasekaram K, Alias Y, Mohamad S. Sporopollenin supported methylimidazolium ionic liquids based mixed matrix membrane for dispersive membrane micro-extraction of nitro and chloro-substituted phenols from various matrices. Microchem J 2022. [DOI: 10.1016/j.microc.2021.106936] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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9
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Morphologische Befunde als Hinweise auf eine 2,4-Dinitrophenol-Intoxikation. Rechtsmedizin (Berl) 2021. [DOI: 10.1007/s00194-021-00552-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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10
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Targeting Energy Expenditure-Drugs for Obesity Treatment. Pharmaceuticals (Basel) 2021; 14:ph14050435. [PMID: 34066399 PMCID: PMC8148206 DOI: 10.3390/ph14050435] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/18/2021] [Accepted: 04/29/2021] [Indexed: 12/15/2022] Open
Abstract
Obesity and overweight are associated with lethal diseases. In this context, obese and overweight individuals infected by COVID-19 are at greater risk of dying. Obesity is treated by three main pharmaceutical approaches, namely suppressing appetite, reducing energy intake by impairing absorption, and increasing energy expenditure. Most compounds used for the latter were first envisaged for other medical uses. However, several candidates are now being developed explicitly for targeting obesity by increasing energy expenditure. This review analyzes the compounds that show anti-obesity activity exerted through the energy expenditure pathway. They are classified on the basis of their development status: FDA-approved, Withdrawn, Clinical Trials, and Under Development. The chemical nature, target, mechanisms of action, and description of the current stage of development are described for each one.
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Caroff SN, Watson CB, Rosenberg H. Drug-induced Hyperthermic Syndromes in Psychiatry. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2021; 19:1-11. [PMID: 33508784 PMCID: PMC7851465 DOI: 10.9758/cpn.2021.19.1.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 11/02/2020] [Accepted: 11/16/2020] [Indexed: 12/11/2022]
Abstract
Hyperthermia, or extreme elevations in body temperature, can be life-threatening and may be caused by prescription drugs or illegal substances acting at a number of different levels of the neuraxis. Several psychotropic drug classes and combinations have been associated with a classic clinical syndrome of hyperthermia, skeletal muscle hypermetabolism, rigidity or rhabdomyolysis, autonomic dysfunction and altered mental status ranging from catatonic stupor to coma. It is critical for clinicians to have a high index of suspicion for these relatively uncommon drug-induced adverse effects and to become familiar with their management to prevent serious morbidity and mortality. Although these syndromes look alike, they are triggered by quite different mechanisms, and apart from the need to withdraw or restore potential triggering drugs and provide intensive medical care, specific treatments may vary. Clinical similarities have led to theoretical speculations about common mechanisms and shared genetic predispositions underlying these syndromes, suggesting that there may be a common “thermic stress syndrome” triggered in humans and animal models by a variety of pharmacological or environmental challenges.
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Affiliation(s)
- Stanley N Caroff
- Corporal Michael J. Crescenz VA Medical Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.,Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.,Malignant Hyperthermia Association of the United States, Sherburne, NY, USA
| | - Charles B Watson
- Malignant Hyperthermia Association of the United States, Sherburne, NY, USA
| | - Henry Rosenberg
- Malignant Hyperthermia Association of the United States, Sherburne, NY, USA
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12
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Oliveira V, Kwitek AE, Sigmund CD, Morselli LL, Grobe JL. Recent Advances in Hypertension: Intersection of Metabolic and Blood Pressure Regulatory Circuits in the Central Nervous System. Hypertension 2021; 77:1061-1068. [PMID: 33611936 DOI: 10.1161/hypertensionaha.120.14513] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Obesity represents the single greatest ongoing roadblock to improving cardiovascular health. Prolonged obesity is associated with fundamental changes in the integrative control of energy balance, including the development of selective leptin resistance, which is thought to contribute to obesity-associated hypertension, and adaptation of resting metabolic rate (RMR) when excess weight is reduced. Leptin and the melanocortin system within the hypothalamus contribute to the control of both energy balance and blood pressure. While the development of drugs to stimulate RMR and thereby reverse obesity through activation of the melanocortin system has been pursued, most of the resulting compounds simultaneously cause hypertension. Evidence supports the concept that although feeding behaviors, RMR, and blood pressure are controlled through mechanisms that utilize similar molecular mediators, these mechanisms exist in anatomically dissociable networks. New evidence supports a major change in molecular signaling within AgRP (Agouti-related peptide) neurons of the arcuate nucleus of the hypothalamus during prolonged obesity and the existence of multiple distinct subtypes of AgRP neurons that individually contribute to control of feeding, RMR, or blood pressure. Finally, ongoing work by our laboratory and others support a unique role for AT1 (angiotensin II type 1 receptor) within one specific subtype of AgRP neuron for the control of RMR. We propose that understanding the unique biology of the AT1-expressing, RMR-controlling subtype of AgRP neurons will help to resolve the selective dysfunctions in RMR control that develop during prolonged obesity and potentially point toward novel druggable antiobesity targets that will not simultaneously cause hypertension.
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Affiliation(s)
- Vanessa Oliveira
- From the Department of Physiology (V.O., A.E.K., C.D.S., J.L.G.), Medical College of Wisconsin, Milwaukee
| | - Anne E Kwitek
- From the Department of Physiology (V.O., A.E.K., C.D.S., J.L.G.), Medical College of Wisconsin, Milwaukee.,Cardiovascular Center (A.E.K., C.D.S., L.L.M., J.L.G.), Medical College of Wisconsin, Milwaukee
| | - Curt D Sigmund
- From the Department of Physiology (V.O., A.E.K., C.D.S., J.L.G.), Medical College of Wisconsin, Milwaukee.,Cardiovascular Center (A.E.K., C.D.S., L.L.M., J.L.G.), Medical College of Wisconsin, Milwaukee.,Neuroscience Research Center (C.D.S., J.L.G.), Medical College of Wisconsin, Milwaukee
| | - Lisa L Morselli
- Cardiovascular Center (A.E.K., C.D.S., L.L.M., J.L.G.), Medical College of Wisconsin, Milwaukee.,Division of Endocrinology and Molecular Medicine, Department of Medicine (L.L.M.), Medical College of Wisconsin, Milwaukee
| | - Justin L Grobe
- From the Department of Physiology (V.O., A.E.K., C.D.S., J.L.G.), Medical College of Wisconsin, Milwaukee.,Cardiovascular Center (A.E.K., C.D.S., L.L.M., J.L.G.), Medical College of Wisconsin, Milwaukee.,Neuroscience Research Center (C.D.S., J.L.G.), Medical College of Wisconsin, Milwaukee.,Department of Biomedical Engineering (J.L.G.), Medical College of Wisconsin, Milwaukee.,Comprehensive Rodent Metabolic Phenotyping Core (J.L.G.), Medical College of Wisconsin, Milwaukee
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13
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‘Sis Science’ and Fitness Doping: Ethnopharmacology, Gender and Risk. SOCIAL SCIENCES-BASEL 2020. [DOI: 10.3390/socsci9040055] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
This article is part of a larger investigation looking into recent changes in the demographics of fitness doping and the possible consequences of such changes. Contesting the historical alliance between masculinity and fitness doping, the article focuses on women’s narratives and experiences of fitness doping in a male-dominated open online community called Flashback. The article builds upon a qualitative and netnographic approach to the research. Employing the lens of the potential emergence of a woman-based ethnopharmacological culture, this article investigates the ways in which women talk about and rationalise their use of performance and image enhancing drugs (PEIDs), their potency and potential gendered side-effects. The results show that although fitness doping can be largely understood in terms of hegemonic patterns, women have gained ground in the context of online fitness doping, heralding a changing doping demography and a movement towards a ‘sis science’ ethnopharmacology. Although critiqued by men, the context enables women to freely discuss harm reduction, risks and the potential potencies of various drugs, and to share knowledge that is relevant to female biology and discuss their own experiences, an activity that also makes visible the negotiation of new gender positions.
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