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Retnosari R, Ali AH, Zainalabidin S, Ugusman A, Oka N, Latip J. The recent discovery of a promising pharmacological scaffold derived from carvacrol: A review. Bioorg Med Chem Lett 2024; 109:129826. [PMID: 38830427 DOI: 10.1016/j.bmcl.2024.129826] [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: 12/11/2023] [Revised: 05/13/2024] [Accepted: 05/27/2024] [Indexed: 06/05/2024]
Abstract
Carvacrol, called CA, is a dynamic phytoconstituent characterized by a phenol ring abundantly sourced from various natural reservoirs. This versatile scaffold serves as a pivotal template for the design and synthesis of novel drug molecules, harboring promising biological activities. The active sites positioned at C-4, C-6, and the hydroxyl group (-OH) of CA offer fertile ground for creating potent drug candidates from a pharmacological standpoint. In this comprehensive review, we delve into diverse synthesis pathways and explore the biological activity of CA derivatives. We aim to illuminate the potential of these derivatives in discovering and developing efficacious treatments against a myriad of life-threatening diseases. By scrutinizing the structural modifications and pharmacophore placements that enhance the activity of CA derivatives, we aspire to inspire the innovation of novel therapeutics with heightened potency and effectiveness.
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Affiliation(s)
- Rini Retnosari
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia; International Joint Department of Materials Science and Engineering Between National University of Malaysia and Gifu University, Graduate School of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; Department of Chemistry, Universitas Negeri Malang, Jl. Semarang No. 5 Malang, Indonesia
| | - Amatul Hamizah Ali
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - Satirah Zainalabidin
- Programme of Biomedical Science, Centre for Toxicology and Health Risk Studies (CORE), Faculty of Health Sciences, Universiti Kebangsaan Malaysia, 50300 Kuala Lumpur, Malaysia
| | - Azizah Ugusman
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia
| | - Natsuhisa Oka
- International Joint Department of Materials Science and Engineering Between National University of Malaysia and Gifu University, Graduate School of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; Institute for Glyco-core Research (iGCORE), Gifu University, Gifu 501-1193, Japan; Center for One Medicine Innovative Translational Research (COMIT), Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Jalifah Latip
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia.
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Konig IFM, Chaves Reis A, Braga MA, De Sousa Melo D, Aparecida Oliveira E, Maria Seles Dorneles E, Thomasi SS, Neodini Remedio R, Marcussi S. Comparative toxicological evaluation of carvacrol, acetylcarvacrol anda fipronil-based pesticide in human blood cells. Drug Chem Toxicol 2024; 47:203-212. [PMID: 36541066 DOI: 10.1080/01480545.2022.2159428] [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: 06/02/2022] [Revised: 10/27/2022] [Accepted: 12/11/2022] [Indexed: 12/24/2022]
Abstract
Plant-derived chemicals are promising substances to control arthropod pests, although synthetic ones are still the most frequently used. Thus, comparative toxicological studies are needed to determine if natural substances are safe alternatives to replace the use of synthetic chemicals. This study aimed to compare the toxicity of carvacrol (natural origin), acetylcarvacrol (semi-synthetic) and a fipronil-based pesticide (synthetic). We assessed the effects of these chemicals on hemolytic activity, erythrocytes morphology and leucocyte viability using whole blood from human subjects. Additionally, DNA damage was evaluated through comet and DNA fragmentation assays. Fipronil and carvacrol caused hemolysis at concentrations ranging from 0.5 to 2.0%, whereas acetylcarvacrol did not cause hemolysis at 0.5 and 0.75%. Fipronil and carvacrol caused severe alterations in erythrocytes' morphology at 2%, such as ghost erythrocytes, elliptocyte-like shape and rouleau-like shape, presenting only 3.3 and 8.3% normal cells, respectively, at this concentration. However, 73.3% erythrocytes incubated with 2% acetylcarvacrol exhibited normal morphology. Fipronil considerably reduced leucocytes viability, decreasing it to 78% at 2%. Carvacrol and acetylcarvacrol showed no differences in leucocyte viability for 0.5 to 1.0%, but a decrease was observed for 2% carvacrol. The comet assay showed similar DNA damage for fipronil and carvacrol, but it was significantly lower for 1 and 2% acetylcarvacrol. Incubation with genomic DNA showed that only fipronil caused fragmentation of this molecule. Thus, we conclude that carvacrol and fipronil can present similar toxicity at higher concentrations. However, acetylation of carvacrol significantly reduced its toxicity to human blood cells compared with the other chemicals.
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Affiliation(s)
| | - Aline Chaves Reis
- Department of Medicine, Federal University of Lavras, Lavras, Brazil
| | | | | | | | | | | | | | - Silvana Marcussi
- Department of Chemistry, Federal University of Lavras, Lavras, Brazil
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Teixeira ALC, Lima Marreto LCN, Vale FL, Pereira E Sousa LJM, Gonzaga BCF, Silva IS, Santos EF, da Silva Lopes FF, de Morais SM, Lopes WDZ, Gomes GA, Monteiro C. Combinations of amitraz with essential oils from Lippia sidoides and Thymus vulgaris, thymol and thymol acetate for Rhipicephalus microplus control: studies under laboratory and field conditions. Vet Parasitol 2023; 321:109997. [PMID: 37562084 DOI: 10.1016/j.vetpar.2023.109997] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/22/2023] [Accepted: 07/24/2023] [Indexed: 08/12/2023]
Abstract
This study aimed to assess the effect of combining amitraz with essential oils (EOs) from Thymus vulgaris and Lippia sidoides, as well as the monoterpenes thymol and thymol acetate, on Rhipicephalus microplus in laboratory conditions, and to select the most effective combination for testing in field conditions. The chemical analysis showed that EOs were mainly composed of monoterpenes, with thymol and p-cymene as the major compounds. In larval (LIT) and adult (AIT) immersion tests using different concentrations of the oils and terpenes mixed with amitraz, the results showed that both EOs and thymol improved the efficacy of amitraz against larvae and engorged females of R. microplus, whereas thymol acetate only enhanced activity against larvae. The most favorable outcome was obtained with the EO of L. sidoides combined with amitraz, resulting in 99 % and 100 % efficacy against larvae and engorged females, respectively. Furthermore, the combination of amitraz with thymol showed presented an efficacy of 94 % and 91 % against larvae and engorged females, respectively. Thus, for the other tests, the combination of thymol + amitraz was chosen due to the ease of working with pure thymol in bioassays, and easier standardization. The immersion test (thymol + amitraz) with semi-engorged females showed 100 % efficacy for the combination of thymol + amitraz, while in tests with different solvents (thymol + amitraz), ethanol being the most effective solvent among those tested (ethanol, Triton, and Tween), resulting in 95 % efficacy on engorged females. In the field test, in treatments with amitraz and thymol + amitraz, efficacy of 54 % and 74 % was observed on day + 3 and 33 % and 43 % on day + 7, respectively. Assessing the reproductive biology of females recovered from animals treated with amitraz or amitraz + thymol, in day + 7, efficacies of 33 % and 52 %, respectively, were observed. EOs from T. vulgaris and L. sidoides and thymol improved the acaricidal activity of amitraz on larvae and engorged females of R. microplus under laboratory conditions, while thymol acetate only enhanced activity against larvae. Thymol increased the efficacy of amitraz under field conditions, however for the development of a commercially available acaricide to R. microplus control, additional studies are needed to increase the efficacy. Further research is needed (by changing concentrations, adding other compounds and/or developing formulations) to increase acaricidal efficacy and develop new effective products to combat R. microplus infestations in cattle.
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Affiliation(s)
- Ana Lúcia Coutinho Teixeira
- Programa de Pós-graduação em Ciência Animal - Escola de Veterinária e Zootecnia da Universidade Federal de Goiás - Rodovia Goiânia, Nova Veneza, km 8, Campus Samambaia, Goiânia, GO 74690-900, Brazil
| | - Laís Carneiro Naziasene Lima Marreto
- Programa de Pós-graduação em Ciências Farmacêuticas - Faculdade de Farmácia da Universidade Federal de Goiás - Praça Universitária, nº 1166, Setor Universitário, Goiânia, GO 74605-220, Brazil
| | - Francisca Leticia Vale
- Programa de Pós-graduação em Ciência Animal - Escola de Veterinária e Zootecnia da Universidade Federal de Goiás - Rodovia Goiânia, Nova Veneza, km 8, Campus Samambaia, Goiânia, GO 74690-900, Brazil
| | - Lainny Jordana Martins Pereira E Sousa
- Programa de Pós-graduação em Ciência Animal - Escola de Veterinária e Zootecnia da Universidade Federal de Goiás - Rodovia Goiânia, Nova Veneza, km 8, Campus Samambaia, Goiânia, GO 74690-900, Brazil
| | - Bruno César Ferreira Gonzaga
- Programa de Pós-graduação em Ciência Animal - Escola de Veterinária e Zootecnia da Universidade Federal de Goiás - Rodovia Goiânia, Nova Veneza, km 8, Campus Samambaia, Goiânia, GO 74690-900, Brazil
| | - Isabela Santos Silva
- Programa de Pós-graduação em Ciência Animal - Escola de Veterinária e Zootecnia da Universidade Federal de Goiás - Rodovia Goiânia, Nova Veneza, km 8, Campus Samambaia, Goiânia, GO 74690-900, Brazil
| | - Emilly Faria Santos
- Graduação em Biotecnologia - R. 235, s/n° - Setor Leste Universitário, Goiânia, GO 74605-050, Brazil
| | - Francisco Flávio da Silva Lopes
- Programa de Pós-Graduação em Biotecnologia, Rede Nordeste de Biotecnologia, Faculdade de Veterinária, Universidade Estadual do Ceará, Av. Dr. Silas Munguba, 1700 - Campus do Itaperi, Fortaleza, CE 60714-903, Brazil
| | - Selene Maia de Morais
- Programa de Pós-Graduação em Biotecnologia, Rede Nordeste de Biotecnologia, Faculdade de Veterinária, Universidade Estadual do Ceará, Av. Dr. Silas Munguba, 1700 - Campus do Itaperi, Fortaleza, CE 60714-903, Brazil
| | - Welber Daniel Zanetti Lopes
- Programa de Pós-graduação em Ciência Animal - Escola de Veterinária e Zootecnia da Universidade Federal de Goiás - Rodovia Goiânia, Nova Veneza, km 8, Campus Samambaia, Goiânia, GO 74690-900, Brazil; Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e de Saúde Pública da Universidade Federal de Goiás, R. 235, s/n° - Setor Leste Universitário, Goiânia, GO 74605-050, Brazil
| | - Geovany Amorim Gomes
- Centro de Ciências Exatas e Tecnologia, Universidade Estadual Vale do Acaraú, Av. da Universidade, 850 - Campus da Betânia, Sobral, CE 62.040-370, Brazil
| | - Caio Monteiro
- Programa de Pós-graduação em Ciência Animal - Escola de Veterinária e Zootecnia da Universidade Federal de Goiás - Rodovia Goiânia, Nova Veneza, km 8, Campus Samambaia, Goiânia, GO 74690-900, Brazil; Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e de Saúde Pública da Universidade Federal de Goiás, R. 235, s/n° - Setor Leste Universitário, Goiânia, GO 74605-050, Brazil.
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Novato T, Gomes GA, Zeringóta V, Franco CT, de Oliveira DR, Melo D, de Carvalho MG, Daemon E, de Oliveira Monteiro CM. In vitro assessment of the acaricidal activity of carvacrol, thymol, eugenol and their acetylated derivatives on Rhipicephalus microplus (Acari: Ixodidae). Vet Parasitol 2018; 260:1-4. [DOI: 10.1016/j.vetpar.2018.07.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 07/17/2018] [Accepted: 07/18/2018] [Indexed: 02/04/2023]
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Tabari MA, Youssefi MR, Maggi F, Benelli G. Toxic and repellent activity of selected monoterpenoids (thymol, carvacrol and linalool) against the castor bean tick, Ixodes ricinus (Acari: Ixodidae). Vet Parasitol 2017; 245:86-91. [DOI: 10.1016/j.vetpar.2017.08.012] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 08/15/2017] [Accepted: 08/16/2017] [Indexed: 01/29/2023]
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Ramírez C, Ibarra F, Pérez HI, Manjarrez N, Salgado HJ, Ortega L. Assessment and determination of LC 50 of carvacrol and salicylic acid analogues with acaricide activity in larvae and adult ticks of Rhipicephalus ( Boophilus) microplus. Parasite Epidemiol Control 2016; 1:72-77. [PMID: 29988173 PMCID: PMC5991821 DOI: 10.1016/j.parepi.2016.02.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 02/23/2016] [Accepted: 02/24/2016] [Indexed: 11/16/2022] Open
Abstract
Rhipicephalus (Boophilus) microplus is a tick that causes huge economic losses in cattle. The indiscriminate use of acaricides has generated resistance to most compounds present on the market. Carvacrol and salicylic acid have been widely studied for their biological activities and have been evaluated in different strains of Rhipicephalus. In this research the analogues carvacrol and salicylic acid were evaluated in larvae of R. (B.) microplus with data obtained in larval packet test (LPT) and larval immersion test (LIT). A lethal concentration 50 (LC50) was assessed. The most potent compounds were evaluated in the adult ticks since there are no reports of evaluation in the life state of the parasite. From all the tested compounds, the ethyl 2-methoxybenzoate (91.82 ± 1.66%, 0.91 μmol/mL) and ethyl 2,5-dihydroxybenzoate (89.14 ± 1.61%, 2.04 μmol/mL) showed the highest percentage of mortality and the lowest LC50. They were found to be the best candidates for a study in vivo.
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Affiliation(s)
- Concepción Ramírez
- Departamento de Parasitología, Facultad de Medicina Veterinaria y Zootecnia, UNAM, Circuito Exterior S/N Ciudad Universitaria, Coyoacán, CP. 04510, CDMX, México.,Departamento de Sistemas Biológicos, Universidad Autónoma Metropolitana Xochimilco, Calzada de Hueso #1100, Col. Villa Quietud, CP 04960, Coyoacán, CDMX, México
| | - Froylán Ibarra
- Departamento de Parasitología, Facultad de Medicina Veterinaria y Zootecnia, UNAM, Circuito Exterior S/N Ciudad Universitaria, Coyoacán, CP. 04510, CDMX, México
| | - Herminia I Pérez
- Departamento de Sistemas Biológicos, Universidad Autónoma Metropolitana Xochimilco, Calzada de Hueso #1100, Col. Villa Quietud, CP 04960, Coyoacán, CDMX, México
| | - Norberto Manjarrez
- Departamento de Sistemas Biológicos, Universidad Autónoma Metropolitana Xochimilco, Calzada de Hueso #1100, Col. Villa Quietud, CP 04960, Coyoacán, CDMX, México
| | - Héctor J Salgado
- Departamento de Química Orgánica, Centro Interdisciplinario de Química y de Ciencias de la Salud, IPN, Av de los Maestros S/N, Santo Tomas, Miguel Hidalgo, CP 11340, CDMX, México
| | - Lucía Ortega
- Departamento de Sistemas Biológicos, Universidad Autónoma Metropolitana Xochimilco, Calzada de Hueso #1100, Col. Villa Quietud, CP 04960, Coyoacán, CDMX, México
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Rhipicephalus (Boophilus) microplus tick in vitro feeding methods for functional (dsRNA) and vaccine candidate (antibody) screening. Ticks Tick Borne Dis 2014; 5:500-10. [PMID: 24875450 DOI: 10.1016/j.ttbdis.2014.03.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 03/10/2014] [Accepted: 03/10/2014] [Indexed: 11/22/2022]
Abstract
Rhipicephalus (Boophilus) microplus (Acari: Ixodidae) ticks cause economic losses for cattle industries throughout tropical and subtropical regions of the world estimated at $US2.5 billion annually. Lack of access to efficacious long-lasting vaccination regimes and increases in tick acaricide resistance have led to the investigation of targets for the development of novel tick vaccines and treatments. In vitro tick feeding has been used for many tick species to study the effect of new acaricides on the transmission of tick-borne pathogens. Few studies have reported the use of in vitro feeding for functional genomic studies using RNA interference and/or the effect of specific anti-tick antibodies. In particular, in vitro feeding reports for the cattle tick are limited due to its relatively short hypostome. Previously published methods were further modified to broaden optimal tick sizes/weights, feeding sources including bovine and ovine serum, optimisation of commercially available blood anti-coagulant tubes, and IgG concentrations for effective antibody delivery. Ticks are fed overnight and monitored for ∼5-6 weeks to determine egg output and success of larval emergence using a humidified incubator. Lithium-heparin blood tubes provided the most reliable anti-coagulant for bovine blood feeding compared with commercial citrated (CPDA) and EDTA tubes. Although >30mg semi-engorged ticks fed more reliably, ticks as small as 15mg also fed to repletion to lay viable eggs. Ticks which gained less than ∼10mg during in vitro feeding typically did not lay eggs. One mg/ml IgG from Bm86-vaccinated cattle produced a potent anti-tick effect in vitro (83% efficacy) similar to that observed in vivo. Alternatively, feeding of dsRNA targeting Bm86 did not demonstrate anti-tick effects (11% efficacy) compared with the potent effects of ubiquitin dsRNA. This study optimises R. microplus tick in vitro feeding methods which support the development of cattle tick vaccines and treatments.
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