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Jerga R, Brablecová V, Talášková V, Tomková H, Součková J, Barták P, Skopalová J. A novel device for the determination of liposome/water partition coefficients. Talanta 2024; 269:125434. [PMID: 38008025 DOI: 10.1016/j.talanta.2023.125434] [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: 07/12/2023] [Revised: 11/07/2023] [Accepted: 11/16/2023] [Indexed: 11/28/2023]
Abstract
A novel, cheap and easy-to-construct device and a simple method for partition coefficient determination in liposome/water system based on modified equilibrium dialysis have been developed. The device consists of two vials separated by a semi-permeable membrane, through which the free form of a low molecular weight substance is transported by shaking assisted diffusion. Five test substances, eugenol, carvacrol, thymol, 4-hydroxybenzyl alcohol (4-HBA) and butylparaben were analyzed after equilibration in aqueous phase by three methods, HPLC-UV, GC-MS and DPV with comparable results. This shows the possibility of using the proposed method in any laboratory with any equipment capable of analyzing the substance under study. The liposome/water partition coefficients (log Pl/w) determined for eugenol (2.39), thymol (2.83), carvacrol (2.78) and butylparaben (3.30) are consistent with previously published data. A strong effect of NaCl on the liposome/water partition coefficient was observed. The value of log Pl/w = 1.06 determined for 4-HBA in the presence of 0.15 mol L-1 NaCl in the partitioning liposomal system was considerably lower than in the absence of the salt (log Pl/w = 2.06). The developed method was used to determine the partition coefficient of morphine in liposome/water system without NaCl (log Pl/w = 2.65) under given conditions.
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Affiliation(s)
- Radek Jerga
- Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Veronika Brablecová
- Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Veronika Talášková
- Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Hana Tomková
- Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Jitka Součková
- Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Petr Barták
- Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Jana Skopalová
- Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic.
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2
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Ravald H, Wiedmer SK. Potential of liposomes and lipid membranes for the separation of β-blockers by capillary electromigration and liquid chromatographic techniques. J Chromatogr A 2023; 1706:464265. [PMID: 37573755 DOI: 10.1016/j.chroma.2023.464265] [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: 06/28/2023] [Revised: 07/21/2023] [Accepted: 07/30/2023] [Indexed: 08/15/2023]
Abstract
β-Blockers belong to a frequently used class of drugs primarily used to treat heart and circulatory conditions. Here we describe the use of lipid vesicles and liposomes as cell membrane biomimicking models in capillary electromigration (CE) and liquid chromatography (LC) techniques for the investigation of interactions between lipid membranes and β-blockers. In addition to liposomes, the use of commercial intravenous lipid emulsions, and their interactions with β-blockers are also discussed. Different CE and LC instrumental techniques designed for these purposes are introduced. Other methodologies for studying interactions between β-blockers and lipid membranes are also briefly discussed, and the different methodologies are compared. The aim is to give the reader a good overview on the status of the use of liposomes and lipids in CE and LC for studying β-blocker interactions.
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Affiliation(s)
- Henri Ravald
- Department of Chemistry, A.I. Virtasen aukio 1, POB 55, 00014 University of Helsinki, Finland
| | - Susanne K Wiedmer
- Department of Chemistry, A.I. Virtasen aukio 1, POB 55, 00014 University of Helsinki, Finland.
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3
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Gastaldi MS, Felsztyna I, Miguel V, Sánchez-Borzone ME, García DA. Theoretical and Experimental Study of Molecular Interactions of Fluralaner with Lipid Membranes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:2134-2142. [PMID: 36688903 DOI: 10.1021/acs.jafc.2c06811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Fluralaner is a relatively new insecticide belonging to the isoxazoline group, whose action mechanism involves the blocking of GABAA-receptors in the insect nervous system. Because of its high hydrophobicity, fluralaner could bioaccumulate and reach toxic local concentrations. Since there are no data available about the penetration and persistence of isoxazolines in biological membranes, we intend to evaluate fluralaner permanence as a pollutant by using model membranes. We used experimental and in silico models to characterize the incorporation of fluralaner into the lipid phase at different packing states. We determined its impact in the membrane structure and organization. Our results confirm that fluralaner is capable of penetrating, holding, and accumulating in the lipid membrane and provide details on its precise location and orientation. These properties would allow fluralaner to reach high local concentrations in different membranes and organs, which could be dangerous for vertebrate organisms if its handling is not properly controlled.
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Affiliation(s)
- María Salomé Gastaldi
- Facultad de Ciencias Exactas, Físicas y Naturales, Departamento de Química, Cátedra de Química Biológica, Universidad Nacional de Córdoba, Córdoba5016, Argentina
- Instituto de Investigaciones Biológicas y Tecnológicas (IIByT), CONICET-Universidad Nacional de Córdoba, Córdoba5016, Argentina
| | - Iván Felsztyna
- Facultad de Ciencias Exactas, Físicas y Naturales, Departamento de Química, Cátedra de Química Biológica, Universidad Nacional de Córdoba, Córdoba5016, Argentina
- Instituto de Investigaciones Biológicas y Tecnológicas (IIByT), CONICET-Universidad Nacional de Córdoba, Córdoba5016, Argentina
| | - Virginia Miguel
- Facultad de Ciencias Exactas, Físicas y Naturales, Departamento de Química, Cátedra de Química Biológica, Universidad Nacional de Córdoba, Córdoba5016, Argentina
- Instituto de Investigaciones Biológicas y Tecnológicas (IIByT), CONICET-Universidad Nacional de Córdoba, Córdoba5016, Argentina
| | - Mariela E Sánchez-Borzone
- Facultad de Ciencias Exactas, Físicas y Naturales, Departamento de Química, Cátedra de Química Biológica, Universidad Nacional de Córdoba, Córdoba5016, Argentina
- Instituto de Investigaciones Biológicas y Tecnológicas (IIByT), CONICET-Universidad Nacional de Córdoba, Córdoba5016, Argentina
| | - Daniel A García
- Facultad de Ciencias Exactas, Físicas y Naturales, Departamento de Química, Cátedra de Química Biológica, Universidad Nacional de Córdoba, Córdoba5016, Argentina
- Instituto de Investigaciones Biológicas y Tecnológicas (IIByT), CONICET-Universidad Nacional de Córdoba, Córdoba5016, Argentina
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Cedillo-Flores OE, Rodríguez-Laguna N, Hipólito-Nájera AR, Nivón-Ramírez D, Gómez-Balderas R, Moya-Hernández R. Effect of the pH on the thermodynamic stability of inclusion complexes of thymol and carvacrol in β-cyclodextrin in water. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2021.107307] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Sebaaly C, Haydar S, Greige-Gerges H. Eugenol encapsulation into conventional liposomes and chitosan-coated liposomes: A comparative study. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.102942] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Saei S, Di Rosa AR, Rasouli B, Seidavi A, Chiofalo V, Liotta L, Chiofalo B. Ajwain ( Trachyspermum copticum) extract in broiler diets: effect on growth performance, carcass components, plasma constituents, immunity and cecum microflora. ITALIAN JOURNAL OF ANIMAL SCIENCE 2021. [DOI: 10.1080/1828051x.2021.1926347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Shayan Saei
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Ambra Rita Di Rosa
- Dipartimento di Scienze Veterinarie, University of Messina, Messina, Italy
| | - Behrouz Rasouli
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Alireza Seidavi
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Vincenzo Chiofalo
- Dipartimento di Scienze Veterinarie, University of Messina, Messina, Italy
| | - Luigi Liotta
- Dipartimento di Scienze Veterinarie, University of Messina, Messina, Italy
| | - Biagina Chiofalo
- Dipartimento di Scienze Veterinarie, University of Messina, Messina, Italy
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Structural basis for promiscuous action of monoterpenes on TRP channels. Commun Biol 2021; 4:293. [PMID: 33674682 PMCID: PMC7935860 DOI: 10.1038/s42003-021-01776-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 01/22/2021] [Indexed: 01/31/2023] Open
Abstract
Monoterpenes are major constituents of plant-derived essential oils and have long been widely used for therapeutic and cosmetic applications. The monoterpenes menthol and camphor are agonists or antagonists for several TRP channels such as TRPM8, TRPV1, TRPV3 and TRPA1. However, which regions within TRPV1 and TRPV3 confer sensitivity to monoterpenes or other synthesized chemicals such as 2-APB are unclear. In this study we identified conserved arginine and glycine residues in the linker between S4 and S5 that are related to the action of these chemicals and validated these findings in molecular dynamics simulations. The involvement of these amino acids differed between TRPV3 and TRPV1 for chemical-induced and heat-evoked activation. These findings provide the basis for characterization of physiological function and biophysical properties of ion channels.
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Short- and long-term dynamics of the physiological and behavioral response to heat stress and thymol supplementation in Japanese quail. J Therm Biol 2021; 97:102876. [PMID: 33863440 DOI: 10.1016/j.jtherbio.2021.102876] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/11/2021] [Accepted: 02/11/2021] [Indexed: 11/21/2022]
Abstract
Organisms have evolved endogenous timing systems that enable them to predict temporal changes and to coordinate complex internal processes. However, temporal dynamics of biological responses are most often ignored in fields such as dietary supplementation of farm animals exposed to artificial environmental challenges. Herein, we hypothesized that the potential for thymol (2-isopropyl-5-methylphenol) to alleviate physiological and behavioral consequences of heat stress is time-dependent on both long-term (i.e. weeks) and short-term (i.e. within day) time scales. First, during 3-weeks adult female Japanese quail (Coturnix japonica) were exposed daily to 9h of increased environmental temperature (34.2 ± 0.1 °C). Controls remained at standard temperatures (23.6 ± 0.1 °C). Simultaneously, half received thymol dietary supplementation and the other half a control basal diet. On day 4, both thymol and heat stress decreased body weight and feed intake respect to controls (basal, standard temperature). After three weeks, feed intake recovered for thymol groups. Therefore, we performed a second experiment focused on the critical first week of treatment, sampling variables three times a day. The beneficial effects of thymol supplementation were mainly observed during the morning, including prevention of high respiratory rates and reduction in the weight of droppings induced by heat stress, and increased walking under both temperatures. In summary, thymol's potential for alleviating heat stress consequences is time-dependent, and can be conceived as an emergent property resulting from the complex interplay between the dynamics of the biological response to thymol and heat stress. Findings highlight the importance of considering time-related factors when developing supplementation protocols to mitigate environmental challenges.
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Shinde P, Agraval H, Srivastav AK, Yadav UCS, Kumar U. Physico-chemical characterization of carvacrol loaded zein nanoparticles for enhanced anticancer activity and investigation of molecular interactions between them by molecular docking. Int J Pharm 2020; 588:119795. [PMID: 32853712 DOI: 10.1016/j.ijpharm.2020.119795] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 12/16/2022]
Abstract
Carvacrol (CV), a monoterpene possesses wide range of biological activities but has limited application due to low aqueous solubility and poor bioavailability. To address this issue and enhance bioavailability and efficacy of carvacrol, lecithin stabilized zein nanoparticles were investigated. Precipitation method was used for synthesis of nanoparticles and characterized using various techniques. CV entrapped under optimized parameters has size around 250 nm with -15 mV zeta potential. SEM studies showed nanoparticles with spherical morphology and size in accordance with DLS studies. FTIR, NMR and DSC were used to determine the molecular interaction between CV and lecithin stabilized zein nanoparticles. Molecular docking studies were performed to understand the interaction between protein and drug at molecular level. Our results demonstrated the presence of two active sites within zein, showing strong binding interactions with carvacrol. The encapsulation efficiency of 78% with loading efficiency of 13% was obtained as per HPLC and UV-Vis studies. Cytotoxicity assay indicated that the CV loaded nanoparticles induce cytotoxicity against colon cancer (SW480) cells further confirmed by acridine orange and ethidium bromide dual staining assay. Fluorescent tagged nanoparticles revealed significant cellular uptake of drug. Our results suggest that CV can be conveniently delivered via oral route after incorporating into lecithin stabilized zein nanoparticles and may prove effective for colon cancer treatment.
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Affiliation(s)
- Priyanka Shinde
- School of Nano Sciences, Central University of Gujarat, Gandhinagar 382030, Gujarat, India
| | - Hina Agraval
- School of Life Science, Central University of Gujarat, Gandhinagar 382030, Gujarat, India
| | - Amit Kumar Srivastav
- School of Nano Sciences, Central University of Gujarat, Gandhinagar 382030, Gujarat, India
| | - Umesh C S Yadav
- School of Life Science, Central University of Gujarat, Gandhinagar 382030, Gujarat, India
| | - Umesh Kumar
- School of Nano Sciences, Central University of Gujarat, Gandhinagar 382030, Gujarat, India.
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Jones A, Barker-Haliski M, Ilie AS, Herd MB, Baxendale S, Holdsworth CJ, Ashton JP, Placzek M, Jayasekera BAP, Cowie CJA, Lambert JJ, Trevelyan AJ, Steve White H, Marson AG, Cunliffe VT, Sills GJ, Morgan A. A multiorganism pipeline for antiseizure drug discovery: Identification of chlorothymol as a novel γ-aminobutyric acidergic anticonvulsant. Epilepsia 2020; 61:2106-2118. [PMID: 32797628 PMCID: PMC10756143 DOI: 10.1111/epi.16644] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 07/21/2020] [Accepted: 07/21/2020] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Current medicines are ineffective in approximately one-third of people with epilepsy. Therefore, new antiseizure drugs are urgently needed to address this problem of pharmacoresistance. However, traditional rodent seizure and epilepsy models are poorly suited to high-throughput compound screening. Furthermore, testing in a single species increases the chance that therapeutic compounds act on molecular targets that may not be conserved in humans. To address these issues, we developed a pipeline approach using four different organisms. METHODS We sequentially employed compound library screening in the zebrafish, Danio rerio, chemical genetics in the worm, Caenorhabditis elegans, electrophysiological analysis in mouse and human brain slices, and preclinical validation in mouse seizure models to identify novel antiseizure drugs and their molecular mechanism of action. RESULTS Initially, a library of 1690 compounds was screened in an acute pentylenetetrazol seizure model using D rerio. From this screen, the compound chlorothymol was identified as an effective anticonvulsant not only in fish, but also in worms. A subsequent genetic screen in C elegans revealed the molecular target of chlorothymol to be LGC-37, a worm γ-aminobutyric acid type A (GABAA ) receptor subunit. This GABAergic effect was confirmed using in vitro brain slice preparations from both mice and humans, as chlorothymol was shown to enhance tonic and phasic inhibition and this action was reversed by the GABAA receptor antagonist, bicuculline. Finally, chlorothymol exhibited in vivo anticonvulsant efficacy in several mouse seizure assays, including the 6-Hz 44-mA model of pharmacoresistant seizures. SIGNIFICANCE These findings establish a multiorganism approach that can identify compounds with evolutionarily conserved molecular targets and translational potential, and so may be useful in drug discovery for epilepsy and possibly other conditions.
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Affiliation(s)
- Alistair Jones
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | | | - Andrei S. Ilie
- Institute of Neuroscience, University of Newcastle, Newcastle, UK
| | - Murray B. Herd
- Neuroscience, Division of Systems Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - Sarah Baxendale
- Department of Biomedical Science, University of Sheffield, Sheffield, UK
| | | | - John-Paul Ashton
- Department of Biomedical Science, University of Sheffield, Sheffield, UK
| | - Marysia Placzek
- Department of Biomedical Science, University of Sheffield, Sheffield, UK
| | - Bodiabaduge A. P. Jayasekera
- Institute of Neuroscience, University of Newcastle, Newcastle, UK
- Department of Neurosurgery, Royal Victoria Infirmary, Newcastle, UK
| | - Christopher J. A. Cowie
- Institute of Neuroscience, University of Newcastle, Newcastle, UK
- Department of Neurosurgery, Royal Victoria Infirmary, Newcastle, UK
| | - Jeremy J. Lambert
- Neuroscience, Division of Systems Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | | | - H. Steve White
- Department of Pharmacy, University of Washington, Seattle
| | - Anthony G. Marson
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | | | - Graeme J. Sills
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
- School of Life Sciences, University of Glasgow, Glasgow, UK
| | - Alan Morgan
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
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Pliego AB, Tavakoli M, Khusro A, Seidavi A, Elghandour MMMY, Salem AZM, Márquez-Molina O, Rene Rivas-Caceres R. Beneficial and adverse effects of medicinal plants as feed supplements in poultry nutrition: a review. Anim Biotechnol 2020; 33:369-391. [DOI: 10.1080/10495398.2020.1798973] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Alberto Barbabosa Pliego
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Toluca, Estado de México, México
| | - Masoomeh Tavakoli
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Ameer Khusro
- Research Department of Plant Biology and Biotechnology, Loyola College, Chennai, Tamil Nadu, India
| | - Alireza Seidavi
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Mona M. M. Y. Elghandour
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Toluca, Estado de México, México
| | - Abdelfattah Z. M. Salem
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Toluca, Estado de México, México
| | - Ofelia Márquez-Molina
- Centro Universitario UAEM Amecameca, Universidad Autónoma del Estado de México, Amecameca, México
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Abo Ghanima MM, Alagawany M, Abd El-Hack ME, Taha A, Elnesr SS, Ajarem J, Allam AA, Mahmoud AM. Consequences of various housing systems and dietary supplementation of thymol, carvacrol, and euganol on performance, egg quality, blood chemistry, and antioxidant parameters. Poult Sci 2020; 99:4384-4397. [PMID: 32867982 PMCID: PMC7598024 DOI: 10.1016/j.psj.2020.05.028] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 04/05/2020] [Accepted: 05/22/2020] [Indexed: 12/21/2022] Open
Abstract
The present work was carried out to investigate the influences of housing system and dietary essential oils (EOs) supplementation to laying hens on the productive performance, egg quality, immunity, antioxidant parameters, and hematology. A factorial arrangement (2 × 4) was performed, including 2 housing systems and 4 different types of EOs (without EOs, thymol, carvacrol, and euganol) during the production stages (from 28–78 wk of age). Birds were randomly divided into 2 groups with each of 2,000 birds. The first group was moved to laying cages while the second group was a floor reared. Each group was randomly divided into 4 groups (5 replicates of 100 birds each): The first were considered as a control group, and the second, third, and fourth groups were treated with thymol, carvacrol, and euganol EO, respectively. The results showed that hens reared in cage system had higher egg weight (P < 0.05), egg production, egg mass, and feed intake and better feed conversion ratio (P < 0.001) than those reared in the floor system. Blood picture values (except white blood cells), phagocytic index, phagocytic activity, and blood chemistry parameters (except calcium, phosphorus, and urea values) of laying hens were not affected (P > 0.05) by housing system. The groups fed EOs showed a rapid improvement (P < 0.001) in the egg production%, egg weight, egg mass, and egg quality. Thymol group had the highest egg production (P < 0.001). Thymol and eugenol groups had the highest egg weight, egg mass, and egg quality (P < 0.001). The groups fed diets containing thymol or eugenol consumed lower feed and had better feed conversion ratio (P < 0.001) than the control group. Immunity indices (phagocytic activity [P < 0.05], avian influenza [AIH5 and AIH9], P < 0.001) were improved with the presence of EOs in the laying hen diet. These results strongly suggest that dietary EO supplementation could be a successful attempt to improve the productive performance, egg quality, and immunity of laying hens.
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Affiliation(s)
- Mahmoud M Abo Ghanima
- Animal Husbandry and Animal Wealth Development Department, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt
| | - Mahmoud Alagawany
- Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
| | - Mohamed E Abd El-Hack
- Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
| | - Ayman Taha
- Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Alexandria University, Edfina 22758, Egypt
| | - Shaaban S Elnesr
- Department of Poultry Production, Faculty of Agriculture, Fayoum University, 63514 Fayoum, Egypt
| | - Jamaan Ajarem
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ahmed A Allam
- Department of Zoology, Faculty of Science, Beni-Suef University, Beni-Suef, 65211 Egypt
| | - Ayman M Mahmoud
- Department of Zoology, Faculty of Science, Beni-Suef University, Beni-Suef, 65211 Egypt
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Arazi E, Blecher G, Zilberberg N. A regulatory domain in the K 2P2.1 (TREK-1) carboxyl-terminal allows for channel activation by monoterpenes. Mol Cell Neurosci 2020; 105:103496. [PMID: 32320829 DOI: 10.1016/j.mcn.2020.103496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 04/12/2020] [Accepted: 04/15/2020] [Indexed: 11/30/2022] Open
Abstract
Potassium K2P ('leak') channels conduct current across the entire physiological voltage range and carry leak or 'background' currents that are, in part, time- and voltage-independent. K2P2.1 channels (i.e., TREK-1, KCNK2) are highly expressed in excitable tissues, where they play a key role in the cellular mechanisms of neuroprotection, anesthesia, pain perception, and depression. Here, we report for the first time that human K2P2.1 channel activity is regulated by monoterpenes (MTs). We found that cyclic, aromatic monoterpenes containing a phenol moiety, such as carvacrol, thymol and 4-IPP had the most profound effect on current flowing through the channel (up to a 6-fold increase). By performing sequential truncation of the carboxyl-terminal domain of the channel and testing the activity of several channel regulators, we identified two distinct regulatory domains within this portion of the protein. One domain, as previously reported, was needed for regulation by arachidonic acid, anionic phospholipids, and temperature changes. Within a second domain, a triple arginine residue motif (R344-346), an apparent PIP2-binding site, was found to be essential for regulation by holding potential changes and important for regulation by monoterpenes.
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Affiliation(s)
- Eden Arazi
- Department of Life Sciences, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 8410501, Israel
| | - Galit Blecher
- Department of Life Sciences, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 8410501, Israel
| | - Noam Zilberberg
- Department of Life Sciences, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 8410501, Israel; Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 8410501, Israel.
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15
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Tong X, Moradipour M, Novak B, Kamali P, Asare SO, Knutson BL, Rankin SE, Lynn BC, Moldovan D. Experimental and Molecular Dynamics Simulation Study of the Effects of Lignin Dimers on the Gel-to-Fluid Phase Transition in DPPC Bilayers. J Phys Chem B 2019; 123:8247-8260. [DOI: 10.1021/acs.jpcb.9b05525] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Xinjie Tong
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Mahsa Moradipour
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Brian Novak
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Poorya Kamali
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Shardrack O. Asare
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Barbara L. Knutson
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Stephen E. Rankin
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Bert C. Lynn
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Dorel Moldovan
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
- Center for Computation and Technology, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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Effects of gabergic phenols on the dynamic and structure of lipid bilayers: A molecular dynamic simulation approach. PLoS One 2019; 14:e0218042. [PMID: 31237897 PMCID: PMC6592534 DOI: 10.1371/journal.pone.0218042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 05/24/2019] [Indexed: 11/19/2022] Open
Abstract
γ-Aminobutyric acid (GABA) is the major inhibitory neurotransmitter in the vertebrate and invertebrate nervous system. GABAA receptors are activated by GABA and their agonists, and modulated by a wide variety of recognized drugs, including barbiturates, anesthetics, and benzodiazepines. The phenols propofol, thymol, chlorothymol, carvacrol and eugenol act as positive allosteric modulators on GABAA-R receptor. These GABAergic phenols interact with the lipid membrane, therefore, their anesthetic activity could be the combined result of their specific activity (with receptor proteins) as well as nonspecific interactions (with surrounding lipid molecules) modulating the supramolecular organization of the receptor environment. Therefore, we aimed to contribute to a description of the molecular events that occur at the membrane level as part of the mechanism of general anesthesia, using a molecular dynamic simulation approach. Equilibrium molecular dynamics simulations indicate that the presence of GABAergic phenols in a DPPC bilayer orders lipid acyl chains for carbons near the interface and their effect is not significant at the bilayer center. Phenols interacts with the polar interface of phospholipid bilayer, particularly forming hydrogen bonds with the glycerol and phosphate group. Also, potential of mean force calculations using umbrella sampling show that propofol partition is mainly enthalpic driven at the polar region and entropic driven at the hydrocarbon chains. Finally, potential of mean force indicates that propofol partition into a gel DPPC phase is not favorable. Our in silico results were positively contrasted with previous experimental data.
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Ephrem E, Najjar A, Charcosset C, Greige-Gerges H. Selection of nerolidol among a series of terpenic and phenolic compounds for its potent activity against Lactobacillus fermentum ATCC 9338. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.02.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Aghamohseni B, Hassaninejad-Darzi SK, Asadollahi-Baboli M. A new sensitive voltammetric determination of thymol based on MnY nanozeolite modified carbon paste electrode using response surface methodology. Microchem J 2019. [DOI: 10.1016/j.microc.2018.11.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Interaction of gabaergic ketones with model membranes: A molecular dynamics and experimental approach. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1860:1563-1570. [DOI: 10.1016/j.bbamem.2018.05.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 05/23/2018] [Accepted: 05/24/2018] [Indexed: 01/28/2023]
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Kheawfu K, Pikulkaew S, Rades T, Müllertz A, Okonogi S. Development and characterization of clove oil nanoemulsions and self-microemulsifying drug delivery systems. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.05.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Meher G, Chakraborty H. Influence of Eugenol on the Organization and Dynamics of Lipid Membranes: A Phase-Dependent Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2344-2351. [PMID: 29323916 DOI: 10.1021/acs.langmuir.7b03595] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Eugenol is known for its antimicrobial effects against microorganisms responsible for infectious diseases in humans, food-borne pathogens, and oral pathogens. In spite of several reports on the antimicrobial function of eugenol by modulating the structural properties of cell membranes, there is limited information on the influence of eugenol in the lipid membrane. In this work, we explored the effect of eugenol on the organization and dynamics of large unilamellar vesicles (LUVs) of DMPC using the intrinsic fluorescence of eugenol and an extrinsic hydrophobic probe, DPH, in varying phases. The organization and dynamics of the bilayers of DMPC vesicles were monitored by utilizing varieties of steady-state and time-resolved fluorescence measurements. Our results show that eugenol stabilizes the gel phase and elevates the phase-transition temperature of DMPC in a concentration-dependent fashion. Fluorescence lifetime measurements demonstrate that higher eugenol-induced water penetration was observed in fluid-phase membranes. Time-resolved anisotropy measurements demonstrate that eugenol reduces the semiangle of DPH wobbling-in-a-cone in gel-phase membranes, whereas the semiangle remains unaffected in fluid-phase membrane. This implies that the eugenol further orders the gel-phase membrane, and this could be a plausible reason for the eugenol-dependent elevation of the phase-transition temperature of DMPC. We envisage that these results will contribute important information to understand the interaction of eugenol with biological membranes.
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Affiliation(s)
- Geetanjali Meher
- School of Chemistry, Sambalpur University , Jyoti Vihar, Burla, Odisha 768 019, India
| | - Hirak Chakraborty
- School of Chemistry, Sambalpur University , Jyoti Vihar, Burla, Odisha 768 019, India
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The Study of Anti-/Pro-Oxidant, Lipophilic, Microbial and Spectroscopic Properties of New Alkali Metal Salts of 5-O-Caffeoylquinic Acid. Int J Mol Sci 2018; 19:ijms19020463. [PMID: 29401704 PMCID: PMC5855685 DOI: 10.3390/ijms19020463] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 01/31/2018] [Accepted: 02/02/2018] [Indexed: 02/04/2023] Open
Abstract
Lithium, sodium, potassium, rubidium and caesium salts of 5-O-caffeoylquinic acid (chlorogenic acid, 5-CQA) were synthesized and described by FT-IR (infrared spectroscopy), FT-Raman (Raman spectroscopy), UV (UV absorption spectroscopy), ¹H (400.15 MHz), 13C (100.63 MHz) NMR (nuclear magnetic resonance spectroscopy). The quantum-chemical calculations at the B3LYP/6-311++G** level were done in order to obtain the optimal structures, IR spectra, NBO (natural bond orbital) atomic charges, HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) orbitals and chemical reactivity parameters for 5-CQA and Li, Na and K 5-CQAs (chlorogenates). The DPPH (α, α-diphenyl-β-picrylhydrazyl) and FRAP (ferric reducing antioxidant power) assays were used for the preliminary estimation of the antioxidant properties of alkali metal chlorogenates and chlorogenic acid. In the DPPH assay the EC50 parameter were equal to 7.39 μM for 5-CQA and was in the range of 4.50-5.89 μM for salts. The FRAP values for two different concentrations (5 and 2.5 μM) of the studied compounds were respectively 114.22 and 72.53 μM Fe2+ for 5-CQA, whereas for salts they were 106.92-141.13 and 78.93-132.00 μM Fe2+. The 5-CQA and its alkali metal salts possess higher antioxidant properties than commonly applied antioxidants (BHA, BHT, l-ascorbic acid). The pro-oxidant action of these compounds on trolox oxidation was studied in the range of their concentration 0.05-0.35 μM. The lipophilicity (logkw) of chlorogenates and chlorogenic acid was determined by RP-HPLC (reverse phase-high performance liquid chromatography) using five different columns (C8, PHE (phenyl), CN (cyano), C18, IAM (immobilized artificial membrane)). The compounds were screened for their in vitro antibacterial activity against E. coli, Bacillus sp., Staphylococcus sp., Streptococcus pyogenes and antifungal activity against Candida sp. The 5-CQA possessed lower antibacterial (minimal inhibitory concentration, MIC = 7.06 mM) and antifungal (MIC = 14.11 mM) properties than its alkali metal salts (MIC values: 6.46-2.63 mM and 12.91-5.27mM, respectively). The synthesized chlorogenates possessed better antioxidant, lipophilic, antimicrobial as well as lower pro-oxidant properties than the ligand alone. Moreover, a systematic change of the activity of alkali metal salts along the series Li→Cs suggests that there are correlations between the studied biological properties. The type of metal cation in the carboxylate group of chlorogenate is crucial for the activity of studied compounds.
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Fernandez ME, Marin RH, Luna A, Zunino MP, Labaque MC. Thymol feed supplementation in quail alters the percentages of nutritionally relevant egg yolk fatty acids: effects throughout incubation. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:5233-5240. [PMID: 28474397 DOI: 10.1002/jsfa.8407] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 03/30/2017] [Accepted: 05/02/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Polyunsaturated fatty acids (PUFA) are crucial components of egg yolk and particularly prone to oxidative damage, generating losses of nutrients for embryonic development and influencing the quality of eggs for human consumption. The aim of this study was to evaluate whether dietary thymol (a natural antioxidant) is related to changes in quail egg yolk total (T), triglyceride (TG) and phospholipid (PL) fatty acid composition at different stages of embryo development. Thus female Japanese quail (100 days of age) were assigned to one of two dietary treatments (12 individuals each): CON (basal diet) or THY (0.0016 mol thymol day-1 per bird). After 2 weeks of supplementation, eggs were incubated and samples were obtained at 0, 4 and 16 days of embryonic development. RESULTS In 0 day THY eggs, α-linolenic acid and n-3 PUFA in T and TG, docosahexaenoic acid and PUFA in T and arachidonic acid in TG were increased, while saturated fatty acids (SFA) in T were reduced. From 4 days on, PUFA, n-3 PUFA and SFA from T and TG in THY eggs were found to be similar to those of CON eggs. The changes in PL throughout incubation were similar in both dietary treatments. CONCLUSION Thymol would provide the embryo with PUFA for synthesis/deposition in membranes and/or assign to supply energy. Additionally, thymol supplementation would be advisable for the production of healthier table eggs. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Maria E Fernandez
- Instituto de Investigaciones Biológicas y Tecnológicas, CONICET-Universidad Nacional de Córdoba, Córdoba, Argentina
- Instituto de Ciencia y Tecnología de los Alimentos, FCEFyN-Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Raul H Marin
- Instituto de Investigaciones Biológicas y Tecnológicas, CONICET-Universidad Nacional de Córdoba, Córdoba, Argentina
- Instituto de Ciencia y Tecnología de los Alimentos, FCEFyN-Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Agustin Luna
- Instituto de Investigaciones Biológicas y Tecnológicas, CONICET-Universidad Nacional de Córdoba, Córdoba, Argentina
- Instituto de Ciencia y Tecnología de los Alimentos, FCEFyN-Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Maria P Zunino
- Instituto de Ciencia y Tecnología de los Alimentos, FCEFyN-Universidad Nacional de Córdoba, Córdoba, Argentina
- Instituto Multidisciplinario de Biología Vegetal, CONICET-Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Maria C Labaque
- Instituto de Investigaciones Biológicas y Tecnológicas, CONICET-Universidad Nacional de Córdoba, Córdoba, Argentina
- Instituto de Ciencia y Tecnología de los Alimentos, FCEFyN-Universidad Nacional de Córdoba, Córdoba, Argentina
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Oz M, El Nebrisi EG, Yang KHS, Howarth FC, Al Kury LT. Cellular and Molecular Targets of Menthol Actions. Front Pharmacol 2017; 8:472. [PMID: 28769802 PMCID: PMC5513973 DOI: 10.3389/fphar.2017.00472] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 07/03/2017] [Indexed: 02/04/2023] Open
Abstract
Menthol belongs to monoterpene class of a structurally diverse group of phytochemicals found in plant-derived essential oils. Menthol is widely used in pharmaceuticals, confectionary, oral hygiene products, pesticides, cosmetics, and as a flavoring agent. In addition, menthol is known to have antioxidant, anti-inflammatory, and analgesic effects. Recently, there has been renewed awareness in comprehending the biological and pharmacological effects of menthol. TRP channels have been demonstrated to mediate the cooling actions of menthol. There has been new evidence demonstrating that menthol can significantly influence the functional characteristics of a number of different kinds of ligand and voltage-gated ion channels, indicating that at least some of the biological and pharmacological effects of menthol can be mediated by alterations in cellular excitability. In this article, we examine the results of earlier studies on the actions of menthol with voltage and ligand-gated ion channels.
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Affiliation(s)
- Murat Oz
- Department of Pharmacology, College of Medicine and Health Sciences, United Arab Emirates UniversityAl Ain, United Arab Emirates.,Department of Basic Medical Sciences, College of Medicine, Qatar UniversityDoha, Qatar
| | - Eslam G El Nebrisi
- Department of Pharmacology, College of Medicine and Health Sciences, United Arab Emirates UniversityAl Ain, United Arab Emirates
| | - Keun-Hang S Yang
- Department of Biological Sciences, Schmid College of Science and Technology, Chapman UniversityOrange, CA, United States
| | - Frank C Howarth
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates UniversityAl Ain, United Arab Emirates
| | - Lina T Al Kury
- Department of Health Sciences, College of Natural and Health Sciences, Zayed UniversityAbu Dhabi, United Arab Emirates
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Interaction of Selected Phenylpropenes with Dipalmitoylphosphatidylcholine Membrane and Their Relevance to Antibacterial Activity. J Membr Biol 2017; 250:259-271. [DOI: 10.1007/s00232-017-9957-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 04/17/2017] [Indexed: 12/23/2022]
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26
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Neuroprotective effects of gabaergic phenols correlated with their pharmacological and antioxidant properties. Life Sci 2017; 175:11-15. [DOI: 10.1016/j.lfs.2017.03.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 02/21/2017] [Accepted: 03/09/2017] [Indexed: 01/07/2023]
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27
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Abdel-Wareth AAA. Effect of dietary supplementation of thymol, synbiotic and their combination on performance, egg quality and serum metabolic profile of Hy-Line Brown hens. Br Poult Sci 2016; 57:114-22. [PMID: 26595820 DOI: 10.1080/00071668.2015.1123219] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
An experiment was conducted to determine the effects of dietary supplementation of thymol, synbiotic (Biomin, IMBO) and their combination in laying hen diets on laying performance, egg quality and serum metabolic profile from 24 to 36 weeks of age. Treatment groups were fed on a control diet, the control diet supplemented with thymol (250 mg/kg), the control diet supplemented with synbiotic (250 mg/kg) or the control diet supplemented with a combination of thymol (250 mg/kg) and synbiotic (250 mg/kg). Supplementation of thymol and synbiotic, separately as well as combined, improved egg weight, egg production, egg mass and feed conversion ratio from 24 to 36 weeks of age. The eggs obtained from thymol, synbiotic or their combination treatments displayed higher values of shell thickness, Haugh unit and shell percentage compared to the control. Serum cholesterol significantly decreased in the single or combined form of thymol and synbiotic supplementation treatments.
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Affiliation(s)
- A A A Abdel-Wareth
- a Department of Animal and Poultry Production, Faculty of Agriculture , South Valley University , Qena , Egypt
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28
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Square wave voltammetry with multivariate calibration tools for determination of eugenol, carvacrol and thymol in honey. Talanta 2016; 158:306-314. [DOI: 10.1016/j.talanta.2016.05.071] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 05/25/2016] [Accepted: 05/26/2016] [Indexed: 11/16/2022]
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Manayi A, Nabavi SM, Daglia M, Jafari S. Natural terpenoids as a promising source for modulation of GABAergic system and treatment of neurological diseases. Pharmacol Rep 2016; 68:671-9. [PMID: 27110875 DOI: 10.1016/j.pharep.2016.03.014] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 02/28/2016] [Accepted: 03/24/2016] [Indexed: 02/06/2023]
Abstract
γ-Aminobutyric acid (GABA) is the main inhibitory neurotransmitter reducing neural excitability in the mammalian central nervous system (CNS) with three subclasses of receptors. Several conventional drugs and compounds modulate the GABAergic system, demonstrating different pharmacological effects. In this review, interactions of natural terpenoids with the GABAergic system are highlighted with relation to disorders like anxiety, insomnia, convulsion, pain, and cognitive deficits. Terpenoids with various structures affect the function of the GABAergic system via dissimilar mechanisms. Most of the discussed compounds interact with GABA receptors, but especially with the GABAA subtype. This may be due to the fact that researchers tend to assess the interaction of compounds using GABAA receptors. However, bilobalide, a sesquiterpene, showed anticonvulsant properties through the activation of glutamic acid decarboxylase (GAD) enzyme, which is a key enzyme in biosynthesis of GABA. Therefore, further studies evaluating and comparing terpenoids of different classes and their interaction with the GABA system, along with their pharmacokinetic properties, could be worthwhile in future studies.
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Affiliation(s)
- Azadeh Manayi
- Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Maria Daglia
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia, Pavia, Italy
| | - Samineh Jafari
- Department of Pharmacognosy, Faculty of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran.
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Thonggoom O, Punrattanasin N, Srisawang N, Promawan N, Thonggoom R. In vitro controlled release of clove essential oil in self-assembly of amphiphilic polyethylene glycol-block-polycaprolactone. J Microencapsul 2016; 33:239-48. [DOI: 10.3109/02652048.2016.1156173] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- O. Thonggoom
- Department of Textile Science and Technology, Faculty of Science and Technology, Thammasat University, Pathumthani, Thailand
| | - N. Punrattanasin
- Department of Textile Science and Technology, Faculty of Science and Technology, Thammasat University, Pathumthani, Thailand
| | - N. Srisawang
- Materials Science and Engineering Program, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - N. Promawan
- Materials Science and Engineering Program, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - R. Thonggoom
- Department of Chemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center for Surface Science and Engineering, Faculty of Science, Mahidol University, Nakhon Pathom, Thailand
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Ezzat Abd El-Hack M, Alagawany M, Ragab Farag M, Tiwari R, Karthik K, Dhama K, Zorriehzahra J, Adel M. Beneficial impacts of thymol essential oil on health and production of animals, fish and poultry: a review. JOURNAL OF ESSENTIAL OIL RESEARCH 2016. [DOI: 10.1080/10412905.2016.1153002] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Mahmoud Alagawany
- Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Mayada Ragab Farag
- Department of Forensic Medicine and Toxicology, Veterinary Medicine Faculty, Zagazig University, Zagazig, Egypt
| | - Ruchi Tiwari
- Department of Veterinary Microbiology, Uttar PradeshPandit Deen Dayal Upadhayay Pashu Chikitsa Vigyan Vishwa Vidyalaya Evum Go-Anusandhan Sansthan (DUVASU), Mathura (Uttar Pradesh) India
| | - Kumaragurubaran Karthik
- Division of Bacteriology and Mycology, Indian Veterinary Research Institute, Izatnagar, Bareilly (Uttar Pradesh), India
| | - Kuldeep Dhama
- Division of Pathology, Indian Veterinary Research Institute, Izatnagar, Bareilly (Uttar Pradesh) India
| | - Jalil Zorriehzahra
- Aquatic Animal Health & Diseases Department, Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization(AREEO),Tehran, I.R. Iran
| | - Milad Adel
- Aquatic Animal Health and Diseases Department, Caspian Sea Ecology Research Center, Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), Tehran, I.R. Iran
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Sebaaly C, Jraij A, Fessi H, Charcosset C, Greige-Gerges H. Preparation and characterization of clove essential oil-loaded liposomes. Food Chem 2015; 178:52-62. [DOI: 10.1016/j.foodchem.2015.01.067] [Citation(s) in RCA: 173] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 12/11/2014] [Accepted: 01/13/2015] [Indexed: 11/25/2022]
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Effects of monoterpenes on ion channels of excitable cells. Pharmacol Ther 2015; 152:83-97. [PMID: 25956464 DOI: 10.1016/j.pharmthera.2015.05.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 04/23/2015] [Indexed: 11/20/2022]
Abstract
Monoterpenes are a structurally diverse group of phytochemicals and a major constituent of plant-derived 'essential oils'. Monoterpenes such as menthol, carvacrol, and eugenol have been utilized for therapeutical purposes and food additives for centuries and have been reported to have anti-inflammatory, antioxidant and analgesic actions. In recent years there has been increasing interest in understanding the pharmacological actions of these molecules. There is evidence indicating that monoterpenes can modulate the functional properties of several types of voltage and ligand-gated ion channels, suggesting that some of their pharmacological actions may be mediated by modulations of ion channel function. In this report, we review the literature concerning the interaction of monoterpenes with various ion channels.
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GABAergic pharmacological activity of propofol related compounds as possible enhancers of general anesthetics and interaction with membranes. Cell Biochem Biophys 2014; 67:515-25. [PMID: 23456454 DOI: 10.1007/s12013-013-9537-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Phenol compounds, such as propofol and thymol, have been shown to act on the GABAA receptor through interaction with specific sites of this receptor. In addition, considering the high lipophilicity of phenols, it is possible that their pharmacological activity may also be the result of the interaction of phenol molecules with the surrounding lipid molecules, modulating the supramolecular organization of the receptor environment. Thus, in the present study, we study the pharmacological activity of some propofol- and thymol-related phenols on the native GABAA receptor using primary cultures of cortical neurons and investigate the effects of these compounds on the micro viscosity of artificial membranes by means of fluorescence anisotropy. The phenol compounds analyzed in this article are carvacrol, chlorothymol, and eugenol. All compounds were able to enhance the binding of [(3)H]flunitrazepam with EC50 values in the micromolar range and to increase the GABA-evoked Cl(-) influx in a concentration-dependent manner, both effects being inhibited by the competitive GABAA antagonist bicuculline. These results strongly suggest that the phenols studied are positive allosteric modulators of this receptor. Chlorothymol showed a bell-type effect, reducing its positive effect at concentrations >100 μM. The concentrations necessary to induce positive allosteric modulation of GABAA receptor were not cytotoxic. Although all compounds were able to decrease the micro viscosity of artificial membranes, chlorothymol displayed a larger effect which could explain its effects on [(3)H]flunitrazepam binding and on cell viability at high concentrations. Finally, it is suggested that these compounds may exert depressant activity on the central nervous system and potentiate the effects of general anesthetics.
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Gill KL, Gertz M, Houston JB, Galetin A. Application of a physiologically based pharmacokinetic model to assess propofol hepatic and renal glucuronidation in isolation: utility of in vitro and in vivo data. Drug Metab Dispos 2013; 41:744-53. [PMID: 23303442 DOI: 10.1124/dmd.112.050294] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A physiologically based pharmacokinetic (PBPK) modeling approach was used to assess the prediction accuracy of propofol hepatic and extrahepatic metabolic clearance and to address previously reported underprediction of in vivo clearance based on static in vitro-in vivo extrapolation methods. The predictive capacity of propofol intrinsic clearance data (CLint) obtained in human hepatocytes and liver and kidney microsomes was assessed using the PBPK model developed in MATLAB software. Microsomal data obtained by both substrate depletion and metabolite formation methods and in the presence of 2% bovine serum albumin were considered in the analysis. Incorporation of hepatic and renal in vitro metabolic clearance in the PBPK model resulted in underprediction of propofol clearance regardless of the source of in vitro data; the predicted value did not exceed 35% of the observed clearance. Subsequently, propofol clinical data from three dose levels in intact patients and anhepatic subjects were used for the optimization of hepatic and renal CLint in a simultaneous fitting routine. Optimization process highlighted that renal glucuronidation clearance was underpredicted to a greater extent than liver clearance, requiring empirical scaling factors of 17 and 9, respectively. The use of optimized clearance parameters predicted hepatic and renal extraction ratios within 20% of the observed values, reported in an additional independent clinical study. This study highlights the complexity involved in assessing the contribution of extrahepatic clearance mechanisms and illustrates the application of PBPK modeling, in conjunction with clinical data, to assess prediction of clearance from in vitro data for each tissue individually.
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Affiliation(s)
- Katherine L Gill
- Centre for Applied Pharmacokinetic Research, School of Pharmacy and Pharmaceutical Sciences, University of Manchester, Stopford Building, Oxford Road, Manchester, M13 9PT, UK
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Reiner GN, Fraceto LF, Paula ED, Perillo MA, García DA. Effects of Gabaergic Phenols on Phospholipid Bilayers as Evaluated by <sup>1</sup>H-NMR. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/jbnb.2013.43a004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Giaginis C, Tsantili-Kakoulidou A. Quantitative Structure–Retention Relationships as Useful Tool to Characterize Chromatographic Systems and Their Potential to Simulate Biological Processes. Chromatographia 2012. [DOI: 10.1007/s10337-012-2374-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Luna A, Dambolena J, Zygadlo J, Marin R, Labaque M. Effects of thymol and isoeugenol feed supplementation on quail adult performance, egg characteristics and hatching success. Br Poult Sci 2012; 53:631-9. [DOI: 10.1080/00071668.2012.721536] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Reiner GN, Perillo MA, García DA. Effects of propofol and other GABAergic phenols on membrane molecular organization. Colloids Surf B Biointerfaces 2012; 101:61-7. [PMID: 22796773 DOI: 10.1016/j.colsurfb.2012.06.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Revised: 06/06/2012] [Accepted: 06/07/2012] [Indexed: 11/26/2022]
Abstract
GABA(A) receptor is the main inhibitory receptor of the central nervous system. The phenols propofol and thymol have been shown to act on this receptor. GABA(A) is an intrinsic protein, the activity of which may be affected by physical changes in the membrane. Taking into account the lipophilicity of phenols, their interaction with the membrane and a consequent non-specific receptor modulation cannot be discarded. By using Langmuir films, we analyze the comparative effects on the molecular properties of the membrane exerted by propofol, thymol and other related compounds, the activities of which on the GABA(A) are under investigation in our laboratory. All the compounds were able to expand phospholipid films, by their incorporation into the monolayer being favored by less-packed structures. Nonetheless, they were able to be incorporated at lateral pressures above the equilibrium pressure estimated for a natural membrane. Epifluorescence images revealed their presence between phospholipid molecules, probably at the head-group region. Hence, all results indicated that the phenols studied were clearly able to interact with membranes, suggesting that their anesthetic activity could be the combined result of their interaction with specific receptor proteins and with their surrounding lipid molecules modulating the supramolecular organization of the receptor environment.
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Affiliation(s)
- Gabriela N Reiner
- Instituto de Investigaciones Biológicas y Tecnológicas (IIBYT), CONICET-Cátedra de Química Biológica, Departamento de Química, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
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Ledbetter MR, Gutsell S, Hodges G, Madden JC, O'Connor S, Cronin MTD. Database of published retention factors for immobilized artificial membrane HPLC and an assessment of the effect of experimental variability. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2011; 30:2701-8. [PMID: 21919042 DOI: 10.1002/etc.677] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 07/22/2011] [Accepted: 08/16/2011] [Indexed: 05/13/2023]
Abstract
A database was collated of published experimental logarithmic values for the relative retention factors (log k(IAM)) measured using an immobilized artificial membrane column and high-performance liquid chromatography (IAM HPLC). Log k(IAM) is an alternative measure of hydrophobicity to the octanol/water partition coefficient (log K(OW)). While there are several accepted methods to measure log K(OW), no standardized method exists to determine log k(IAM). The database of collated log k(IAM) values includes 13 key experimental parameters and contains 1,686 values for 555 compounds, which are predominantly polar organic compounds and include drug molecules and surfactants. These compounds are acidic, basic, and neutral and both ionized and un-ionized under the conditions of analysis. The data compiled demonstrated experimental variability for each experimental parameter considered, including column stationary phase, pH, temperature, and mobile phase. Reducing the experimental variability allowed for greater consistency in the datasets.
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Affiliation(s)
- M R Ledbetter
- School of Pharmacy and Chemistry, Liverpool John Moores University, Liverpool, UK
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Preparation, characterization and in vitro release study of carvacrol-loaded chitosan nanoparticles. Colloids Surf B Biointerfaces 2011; 84:163-71. [DOI: 10.1016/j.colsurfb.2010.12.031] [Citation(s) in RCA: 369] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2010] [Revised: 12/12/2010] [Accepted: 12/27/2010] [Indexed: 11/21/2022]
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Time course of ethanol and propofol exhalation after bolus injection using ion molecule reaction–mass spectrometry. Anal Bioanal Chem 2010; 401:2063-7. [DOI: 10.1007/s00216-010-4042-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Revised: 07/11/2010] [Accepted: 07/15/2010] [Indexed: 10/19/2022]
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Luna A, Lábaque M, Zygadlo J, Marin R. Effects of thymol and carvacrol feed supplementation on lipid oxidation in broiler meat. Poult Sci 2010; 89:366-70. [DOI: 10.3382/ps.2009-00130] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Melo FHC, Venâncio ET, de Sousa DP, de França Fonteles MM, de Vasconcelos SMM, Viana GSB, de Sousa FCF. Anxiolytic-like effect of Carvacrol (5-isopropyl-2-methylphenol) in mice: involvement with GABAergic transmission. Fundam Clin Pharmacol 2009; 24:437-43. [PMID: 19909350 DOI: 10.1111/j.1472-8206.2009.00788.x] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Carvacrol (5-isopropyl-2-methylphenol) is a monoterpenic phenol present in the essencial oil of many plants. It is the major component of the essential oil fraction of oregano and thyme. This work presents the behavioral effects of carvacrol in animal models of elevated plus maze (EPM), open field, Rotarod and barbiturate-induced sleeping time tests in mice. Carvacrol (CVC) was administered orally, in male mice, at single doses of 12.5; 25 and 50 mg/kg while diazepam 1 or 2 mg/kg was used as standard drug and flumazenil (2.5 mg/kg) was used to elucidate the possible anxiolytic mechanism of CVC on the plus maze test. The results showed that CVC, at three doses, had no effect on the spontaneous motor activity in the Rotarod test nor in the number of squares crossed in the open-field test. However, CVC decreased the number of groomings in the open-field test. In the plus maze test, CVC, at three doses significantly increased all the observed parameters in the EPM test and flumazenil was able to reverse the effects of diazepam and CVC. Therefore, CVC did not alter the sleep latency and sleeping time in the barbiturate-induced sleeping time test. These results show that CVC presents anxiolytic effects in the plus maze test which are not influenced by the locomotor activity in the open-field test.
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Affiliation(s)
- Francisca Helvira Cavalcante Melo
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60430-270 Fortaleza, Brazil.
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Gallucci MN, Oliva M, Casero C, Dambolena J, Luna A, Zygadlo J, Demo M. Antimicrobial combined action of terpenes against the food-borne microorganismsEscherichia coli, Staphylococcus aureusandBacillus cereus. FLAVOUR FRAG J 2009. [DOI: 10.1002/ffj.1948] [Citation(s) in RCA: 154] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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