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Malak N, Niaz S, Miranda-Miranda E, Cossío-Bayúgar R, Duque JE, Amaro-Estrada I, Nasreen N, Khan A, Kulisz J, Zając Z. Current perspectives and difficulties in the design of acaricides and repellents from plant-derived compounds for tick control. EXPERIMENTAL & APPLIED ACAROLOGY 2024; 93:1-16. [PMID: 38491268 DOI: 10.1007/s10493-024-00901-y] [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: 08/29/2021] [Accepted: 12/30/2023] [Indexed: 03/18/2024]
Abstract
Ticks and tick-borne diseases have gained increasing attention in recent years due to their impact on public health and significant losses in livestock production. The use of synthetic compounds for tick control is becoming problematic, mainly due to the resistance to commercially available products as well as their toxicity. Therefore, new alternative control methods are required. For this purpose, plant-derived extracts may be considered as effective repellents and/or acaricides. The present literature review focuses on studies evaluating the acaricidal and repellent activity of plant-derived extracts and plant secondary metabolites. We also noted recent advances in protein-ligand-docking simulation to examine the possible toxic effect of natural chemical compounds on ticks. In conclusion, plant-derived repellents/acaricides can be effective against ticks, especially in rural areas and livestock farms.
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Affiliation(s)
- Nosheen Malak
- Department of Zoology, Abdul Wali Khan University Mardan, Toru Road, Sheikh Maltoon Town, Mardan, 23200, Pakistan
| | - Sadaf Niaz
- Department of Zoology, Abdul Wali Khan University Mardan, Toru Road, Sheikh Maltoon Town, Mardan, 23200, Pakistan
| | - Estefan Miranda-Miranda
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias (INIFAP), Carr. Fed. Cuernavaca-Cuautla No.8534, Jiutepec, 62550, México, Morelos
| | - Raquel Cossío-Bayúgar
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias (INIFAP), Carr. Fed. Cuernavaca-Cuautla No.8534, Jiutepec, 62550, México, Morelos
| | - Jonny Edward Duque
- Centro de Investigaciones en Enfermedades Tropicales - CINTROP, Facultad de Salud. Escuela de Medicina, Departamento de Ciencias Básicas, Guatiguará Technology and Research Park, Universidad Industrial de Santander, Km 2 Vía El Refugio, Piedecuesta, Santander, Colombia
| | - Itzel Amaro-Estrada
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias (INIFAP), Carr. Fed. Cuernavaca-Cuautla No.8534, Jiutepec, 62550, México, Morelos
| | - Nasreen Nasreen
- Department of Zoology, Abdul Wali Khan University Mardan, Toru Road, Sheikh Maltoon Town, Mardan, 23200, Pakistan
| | - Adil Khan
- Department of Zoology, Abdul Wali Khan University Mardan, Toru Road, Sheikh Maltoon Town, Mardan, 23200, Pakistan.
- Department of Botany and Zoology, Bacha Khan University, Charsadda, Khyber Pakhtunkhwa, Pakistan.
| | - Joanna Kulisz
- Department of Biology and Parasitology, Medical University of Lublin, Radziwiłłowska 11st, Lublin, 20-080, Poland
| | - Zbigniew Zając
- Department of Biology and Parasitology, Medical University of Lublin, Radziwiłłowska 11st, Lublin, 20-080, Poland.
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2
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da Silva Costa JR, do Vale TL, da Silva GF, da Silva NCS, da Silva Lima A, Costa-Junior LM, Luz HR. Encapsulation of carvacrol and thymol with yeast cell wall and its repellent activity against Amblyomma sculptum and Rhipicephalus sanguineus (Sensu Lato). EXPERIMENTAL & APPLIED ACAROLOGY 2024; 92:555-565. [PMID: 38468022 DOI: 10.1007/s10493-023-00896-y] [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: 03/10/2022] [Accepted: 12/30/2023] [Indexed: 03/13/2024]
Abstract
The main way to avoid contact with ticks and consequently tick-borne disease is the use of synthetic repellents. The search of new repellent compounds to increase the possibilities of use in strategies controls are necessary. The present study evaluated the repellent activity of two natural terpenes carvacrol and thymol in each one two different formulation (encapsulated and nonencapsulated with yeast cell wall) against the ticks Amblyomma sculptum and Rhipicephalus sanguineus sensu lato nymphs. Nymphs of A. sculptum and R. sanguineus s.l. of a single generation were used. The vertical filter paper repellency assay were performed with different concentration of both terpenes encapsulated and nonencapsulated in yeast cell wall. The repellent concentration 50% (RC50) were calculated to each compound formulation. Both carvacrol and thymol (encapsulated and nonencapsulated), had a repellent activity against A. sculptum and R. sanguineus s.l nymphs. Amblyomma sculptum was more sensitive to nonencapsulated carvacrol (RC50 values: 0.0032 to 0.0082 mg/cm2 after 1 and 15 min) (P < 0.05), while R. sanguineus s.l. was more sensitive to encapsulated carvacrol (RC50 values: 0.00008 to 0.0035 mg/cm2 after 1 and 15 min) (P < 0.05). Among tick species, R. sanguineus s.l. was more sensitive for most compounds than A. sculptum (P < 0.05). Although with distinct repellent activities, carvacrol and thymol encapsulated can be a promising alternative to synthetic repellents against A. sculptum and R. sanguineus s.l.
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Affiliation(s)
- Jhone Robson da Silva Costa
- Laboratory of Parasite Control, Department of Pathology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, Maranhão, Brazil
| | - Tassia Lopes do Vale
- Laboratory of Parasite Control, Department of Pathology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, Maranhão, Brazil
| | - Geovane Ferreira da Silva
- Laboratory of Parasite Control, Department of Pathology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, Maranhão, Brazil
| | - Naylene Carvalho Sales da Silva
- Laboratory of Parasite Control, Department of Pathology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, Maranhão, Brazil
| | | | - Lívio Martins Costa-Junior
- Laboratory of Parasite Control, Department of Pathology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, Maranhão, Brazil
| | - Hermes Ribeiro Luz
- Postgraduate Program in Health and Environment, Federal University of Maranhão - UFMA, São Luís, MA, Brazil.
- Post‑Graduation Program in Northeast Biotechnology Network (RENORBIO), Biodiversity and Conservation, Center of Biological and Health Sciences, Federal University of Maranhão - UFMA, São Luís, MA, Brazil.
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Gamal A, Aboelhadid SM, Abo El-Ela FI, Abdel-Baki AAS, Ibrahium SM, EL-Mallah AM, Al-Quraishy S, Hassan AO, Gadelhaq SM. Synthesis of Carvacrol-Loaded Invasomes Nanoparticles Improved Acaricide Efficacy, Cuticle Invasion and Inhibition of Acetylcholinestrase against Hard Ticks. Microorganisms 2023; 11:microorganisms11030733. [PMID: 36985306 PMCID: PMC10057972 DOI: 10.3390/microorganisms11030733] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/03/2023] [Accepted: 03/09/2023] [Indexed: 03/18/2023] Open
Abstract
Carvacrol is a monoterpenoid phenol found in many essential oils that has antibacterial, antifungal and antiparasitic activities. Drug loaded-invasome systems are used to deliver drugs utilizing nanoparticles to improve bioavailability, efficacy, and drug release duration. As a result, the present study developed carvacrol-loaded invasomes and evaluated their acaricidal effect against Rhipicephalus annulatus (cattle tick) and Rhipicephalus sanguineus (dog tick). Carvacrol loaded-invasome (CLI) was prepared and characterized using UV/Vis spectrophotometer, zeta potential measurements, Scanning Transmission Electron Microscopy (STEM), Fourier Transform Infrared (FT-IR) Spectroscopy, and Differential Scanning Calorimetry Analysis. CLI (5%) induced significant mortality (100%) in R. annulatus adult ticks with LC50 of 2.60%, whereas the LC50 of pure carvacrol was 4.30%. Carvacrol and CLI were shown to have a significant larvicidal action on both tick species, with LC50s of 0.24 and 0.21% against R. annulatus and 0.27 and 0.23% against R. sanguineus, respectively. Carvacrol and CLI (5%) induced significant repellent activities for 24 h against R. annulatus and R. sanguineus, as evidenced by the rod method and the petri-dish selective area choice method, respectively. High-performance liquid chromatography (HPLC) demonstrated that the CLI form had 3.86 times the permeability of pure carvacrol. Moreover, carvacrol and CLI inhibited acetylcholinesterase activity and decreased glutathione and malonedealdehyde levels in the treated ticks. In conclusion, invasomes significantly improved adulticidal and repellency activities of carvacrol against both tick species.
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Affiliation(s)
- Amr Gamal
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Shawky M. Aboelhadid
- Parasitology Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
- Correspondence:
| | - Fatma I. Abo El-Ela
- Department of Pharmacology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
| | | | - Samar M. Ibrahium
- Department of Parasitology, Animal Health Research Institute, Fayum Branch, Fayum 16101, Egypt
| | - Almahy M. EL-Mallah
- Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62521, Egypt
| | - Saleh Al-Quraishy
- Zoology Department, College of Science, King Saud University, Riyadh P.O. Box 2455, Saudi Arabia
| | - Ahmed O. Hassan
- Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Sahar M. Gadelhaq
- Parasitology Department, Faculty of Veterinary Medicine, Minia University, Minia 61519, Egypt
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4
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In vitro assessment of the acaricidal activity of a carvacrol shampoo on tick larvae. Exp Parasitol 2022; 242:108364. [PMID: 36027929 DOI: 10.1016/j.exppara.2022.108364] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 07/22/2022] [Accepted: 08/18/2022] [Indexed: 11/22/2022]
Abstract
Ticks are a widely distributed arthropod of veterinary importance. Resistance of ticks to synthetic acaricides has become widespread, warranting the development of new drugs for tick management. Carvacrol is a volatile monoterpene, with promising results against various species of ticks; however, to be used for therapeutic purposes, carvacrol must be included in a formulation that makes its application feasible. This study aims to develop a formulation of a carvacrol-containing shampoo that is effective against two species of ticks: Rhipicephalus sanguineus and R. microplus. Shampoo sensory characteristics and pH were evaluated at 37, 25 and 5 °C, for a maximum of 15 days. The shampoo remained stable at 25 and 5 °C. The efficacy of the carvacrol-containing formulation against two species of ticks was assessed by the larval immersion test. Mortality of both tick species was significantly higher for the carvacrol shampoo than for a carvacrol hydroalcoholic solution. In conclusion, the carvacrol-containing shampoo showed larvicidal efficacy on ticks.
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5
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Mota TF, Silva CMDA, Conceição MDS, Fraga DBM, Brodskyn CI, Neto MFDA, Santana IB, Mesquita PRR, Leite FHA, Magalhães-Júnior JT. Screening organic repellent compounds against Lutzomyia longipalpis (Diptera: Psychodidae) present in plant essential oils: Bioassay plus an in silico approach. Acta Trop 2022; 229:106367. [PMID: 35167802 DOI: 10.1016/j.actatropica.2022.106367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 02/09/2022] [Accepted: 02/10/2022] [Indexed: 11/18/2022]
Abstract
In the Americas, Lutzomyia longipalpis is the most relevant sand fly species for the transmission of visceral leishmaniasis. For its vector control in Brazil, insecticide spraying has not shown persistent reduction in disease prevalence while some sand fly populations are reported resistant to the insecticides used in spraying. The usage of repellents and personal protection behavior can reduce vector borne diseases prevalence. Therefore, the search for new repellent compounds is needed to use together with insecticide spraying, especially from natural sources to overcome the resistance developed by some sand fly populations to the compounds commercially used. In silico strategies have been applied together with repellency bioassays successfully identifying new bioactive compounds from natural sources. Thus, the present study aimed to screen repellent potential of neem (Azadirachta indica), citronella (Cymbopogon winterianus), bushy matgrass (Lippia alba) and 'alecrim do mato' (Lippia thymoides) essential oils against L. longipalpis and to identify potential repellent compounds by chemical analysis and in silico approach. Plant essential oils were extracted from leaves and repellency bioassays were performed on volunteers using colony reared L. longipalpis. Aside from neem oil, all other tested essential oil has shown a reduced number of sand fly bites using higher concentrations. Chemical composition from oils was assessed and its compounds were screened on a pharmacophore model using odorant binding protein 1 (OBP1). All essential oils were majorly composed of either oxygenated monoterpenes, except for the oil extracted from neem which was composed of sesquiterpene hydrocarbons. Molecular docking was performed with the compounds that best superimposed in the OBP1 pharmacophore model, identifying those binding to OBP4, which is associated with insect repellency behavior. Citronellol, Citronellol acetate, Citronellal and Geranyl acetate showed similar interactions with OBP4 binding site as DEET. Thus, it is suggested that these compounds are able to bind to L. longipalpis OBP4 generating repellent behavior in sand flies.
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Affiliation(s)
- Tiago F Mota
- Laboratório de Interação Parasito-Hospedeiro e Epidemiologia (LaIPHE), Instituto Gonçalo Moniz (IGM), FIOCRUZ-BA, Rua Waldemar Falcão, 121 Candeal, 40296-710, Salvador, Bahia, Brazil.
| | - Caliene M de A Silva
- Centro Multidisciplinar do Campus de Barra da Universidade Federal do Oeste da Bahia, Bahia, Brasil
| | - Maurício Dos S Conceição
- Centro Multidisciplinar do Campus de Barra da Universidade Federal do Oeste da Bahia, Bahia, Brasil
| | - Deborah B M Fraga
- Laboratório de Interação Parasito-Hospedeiro e Epidemiologia (LaIPHE), Instituto Gonçalo Moniz (IGM), FIOCRUZ-BA, Rua Waldemar Falcão, 121 Candeal, 40296-710, Salvador, Bahia, Brazil; Departamento de Medicina Veterinária Preventiva e Produção Animal, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia (UFBA), Av. Adhemar de Barros, 500 Ondina, 40170-110, Salvador, Bahia, Brazil
| | - Claudia I Brodskyn
- Laboratório de Interação Parasito-Hospedeiro e Epidemiologia (LaIPHE), Instituto Gonçalo Moniz (IGM), FIOCRUZ-BA, Rua Waldemar Falcão, 121 Candeal, 40296-710, Salvador, Bahia, Brazil
| | - Moysés F de A Neto
- Laboratório de Modelagem Molecular, Departamento de Saúde, Universidade Estadual de Feira de Santana, Bahia, Brasil
| | - Isis B Santana
- Laboratório de Modelagem Molecular, Departamento de Saúde, Universidade Estadual de Feira de Santana, Bahia, Brasil
| | - Paulo R R Mesquita
- Centro Tecnológico Agropecuário do Estado da Bahia (CETAB), Bahia, Brazil; Faculdade Maria Milza, Bahia, Brazil
| | - Franco H A Leite
- Laboratório de Modelagem Molecular, Departamento de Saúde, Universidade Estadual de Feira de Santana, Bahia, Brasil
| | - Jairo T Magalhães-Júnior
- Centro Multidisciplinar do Campus de Barra da Universidade Federal do Oeste da Bahia, Bahia, Brasil
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Wang HV, Pickett LJ, Faraone N. Repellent and acaricidal activities of basil (Ocimum basilicum) essential oils and rock dust against Ixodes scapularis and Dermacentor variabilis ticks. EXPERIMENTAL & APPLIED ACAROLOGY 2022; 86:583-598. [PMID: 35230583 DOI: 10.1007/s10493-022-00705-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Repellent and acaricidal activity of essential oils extracted from three varieties of basil (Ocimum basilicum L.) were evaluated on blacklegged ticks (Ixodes scapularis Say) and American dog ticks (Dermacentor variabilis Say) in laboratory conditions. Essential oils were extracted and characterized through gas chromatography-mass spectrometry, and tested at different concentrations for long-term repellent activity using horizontal bioassays. In addition, basil essential oils were combined with an inert material (i.e., granite rock dust) with known insecticidal and miticidal properties to assess acaricidal activities against adult ticks. Among the tested basil varieties, var. Jolina essential oil at 15% vol/vol concentration repelled 96% of tested ticks up to 2 h post-treatment. The EC50 for I. scapularis nymphs was 4.65% vol/vol (95% confidence interval: 4.73-4.57). In acaricidal tests, the combination of essential oil from var. Aroma 2 at 10% wt/wt with rock dust resulted in 100% tick mortality after only 24 h post-exposure, with a LD50 of 3.48% wt/wt (95% CI 4.05-2.91) for freshly prepared treatment tested on I. scapularis adults. The most common compounds detected in basil essential oils by GC-MS were linalool (52.2% in var. Nu Far, 48.2% in Aroma 2, 43.9% in Jolina), sabinene (6.71% in Nu Far, 8.99% in Aroma 2, 8.11% in Jolina), eugenol (11.2% in Jolina, 8.71% in Aroma 2), and estragole (18.2% in Nu Far). The use of essential oils alone and in combination with rock dust provides an innovative and environmentally friendly approach for managing ticks and inhibiting vector-borne disease transmission.
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Affiliation(s)
- Haozhe V Wang
- Department of Chemistry, Acadia University, Wolfville, NS, Canada
| | - Laura J Pickett
- Department of Chemistry, Acadia University, Wolfville, NS, Canada
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7
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González MA, Bravo-Barriga D, Alarcón-Elbal PM, Álvarez-Calero JM, Quero C, Ferraguti M, López S. Development of Novel Management Tools for Phortica variegata (Diptera: Drosophilidae), Vector of the Oriental Eyeworm, Thelazia callipaeda (Spirurida: Thelaziidae), in Europe. JOURNAL OF MEDICAL ENTOMOLOGY 2022; 59:328-336. [PMID: 34748016 PMCID: PMC8755994 DOI: 10.1093/jme/tjab171] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Lachryphagous males of Phortica variegata (Fallén, 1823) are gaining increasing attention in Europe, as they act as vectors of the nematode Thelazia callipaeda Railliet & Henry, 1910, causal agent of thelaziosis, an emergent zoonotic disease. Currently, there are no effective control strategies against the vector, and surveillance and monitoring rely on time-consuming and nonselective sampling methods. Our aim was to improve the knowledge about the population dynamics and the chemical ecology of the species. A total of 5,726 P. variegata flies (96.4% males and 3.6% females, mostly gravid) were collected in field experiments during June-September of 2020 in an oak forest in northern Spain. Our results indicate that 1) by means of sweep netting a significantly higher number of captures were found both around the collector´s body and in the air than at ground level; 2) a positive relationship was detected between the abundance of Phortica flies and temperature, with two significant peaks of abundance at 24 and 33°C; 3) the blend of red wine and cider vinegar was the most attractive bait; 4) yellow traps captured fewer flies compared to black and transparent traps; and 5) a significant reduction toward vinegar and wine was detected in presence of the phenolic monoterpenoid carvacrol. In addition, all the males (n = 690) analyzed by both molecular detection and dissection resulted negative for the presence of T. callipaeda larvae. Overall, these findings provide a better understanding of the vector in terms of monitoring and management strategies.
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Affiliation(s)
- M A González
- Institute of Tropical Medicine and Global Health (IMTSAG), Universidad Iberoamericana (UNIBE), Avenida Francia 129, 10203, Santo Domingo, Dominican Republic
| | - D Bravo-Barriga
- Universidad de Extremadura, Facultad de Veterinaria, Departamento de Sanidad Animal, Parasitología, Avda. Universidad s/n, 10003 Cáceres, España
| | - P M Alarcón-Elbal
- Laboratorio de Entomología, Universidad Agroforestal Fernando Arturo de Meriño (UAFAM), 41000, Jarabacoa, Dominican Republic
| | - J M Álvarez-Calero
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - C Quero
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - M Ferraguti
- Department of Theoretical and Computational Ecology (TCE), Institute for Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - S López
- Department of Biological Chemistry, Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
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Yao N, Xu Q, He JK, Pan M, Hou ZF, Liu DD, Tao JP, Huang SY. Evaluation of Origanum vulgare Essential Oil and Its Active Ingredients as Potential Drugs for the Treatment of Toxoplasmosis. Front Cell Infect Microbiol 2021; 11:793089. [PMID: 34881197 PMCID: PMC8645793 DOI: 10.3389/fcimb.2021.793089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 10/27/2021] [Indexed: 12/22/2022] Open
Abstract
Toxoplasma gondii is a serious hazard to public health and animal husbandry. Due to the current dilemma of treatment of toxoplasmosis, it is urgent to find new anti-T. gondii drugs to treat toxoplasmosis. In this study, the anti-T. gondii activity of Origanum vulgare essential oil (Ov EO) was firstly studied, and then, carvanol (Ca), the main ingredient of Ov EO was evaluated using the MTT assay on human foreskin fibroblast (HFF) cells in vitro. The cytotoxicity was evaluated using the MTT assay on HFF cells. The CC50 of Ov EO and Ca was 134.9 and 43.93 μg/ml, respectively. Both of them exhibited anti-parasitic activity, and inhibited the growth of T. gondii in a dose-dependent manner. For the inhibition effect, Ca was better than Ov EO at the same concentration, the IC50 of Ov EO and Ca was 16.08 and 7.688 μg/ml, respectively. In addition, treatment with Ca, was found to change the morphology of T. gondii tachyzoites and made their shapes curl up. These results showed that Ca was able to inhibit the proliferation of T. gondii by reducing invasion, which may be due to its detrimental effect on the mobility of tachyzoites. Our results indicated that Ca could be a potential new and effective drug for treating toxoplasmosis.
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Affiliation(s)
- Na Yao
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou, China
| | - Qiong Xu
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou, China
| | - Jia-Kang He
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Ming Pan
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou, China
| | - Zhao-Feng Hou
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou, China
| | - Dan-Dan Liu
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou, China
| | - Jian-Ping Tao
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou, China
| | - Si-Yang Huang
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, China
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9
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Encapsulation of volatile compounds in liquid media: Fragrances, flavors, and essential oils in commercial formulations. Adv Colloid Interface Sci 2021; 298:102544. [PMID: 34717207 DOI: 10.1016/j.cis.2021.102544] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 10/06/2021] [Accepted: 10/08/2021] [Indexed: 12/23/2022]
Abstract
The first marketed example of the application of microcapsules dates back to 1957. Since then, microencapsulation techniques and knowledge have progressed in a plethora of technological fields, and efforts have been directed toward the design of progressively more efficient carriers. The protection of payloads from the exposure to unfavorable environments indeed grants enhanced efficacy, safety, and stability of encapsulated species while allowing for a fine tuning of their release profile and longer lasting beneficial effects. Perfumes or, more generally, active-loaded microcapsules are nowadays present in a very large number of consumer products. Commercial products currently make use of rigid, stable polymer-based microcapsules with excellent release properties. However, this type of microcapsules does not meet certain sustainability requirements such as biocompatibility and biodegradability: the leaking via wastewater contributes to the alarming phenomenon of microplastic pollution with about 4% of total microplastic in the environment. Therefore, there is a need to address new issues which have been emerging in relation to the poor environmental profile of such materials. The progresses in some of the main application fields of microencapsulation, such as household care, toiletries, cosmetics, food, and pesticides are reviewed herein. The main technologies employed in microcapsules production and the mechanisms underlying the release of actives are also discussed. Both the advantages and disadvantages of every technique have been considered to allow a careful choice of the most suitable technique for a specific target application and prepare the ground for novel ideas and approaches for encapsulation strategies that we expect to be proposed within the next years.
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Salari A, Roshanaei K, Rasoulian B, Fard JK. Carvacrol loaded beta cyclodextrin-alginate-chitosan based nanoflowers attenuates renal toxicity induced by malathion and parathion: A comparative toxicity. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 172:104747. [PMID: 33518056 DOI: 10.1016/j.pestbp.2020.104747] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 10/25/2020] [Accepted: 11/05/2020] [Indexed: 06/12/2023]
Abstract
Most of approximately 1.8 billion people involved in agriculture protect their food products using pesticides especially insecticides which may remain in foods as pesticide residues. Among insecticides organophosphates such as malathion have been widely used around the world and others such as parathion has been restricted because of their toxicity. Carvacrol (CAR) is the main component of Satureja khuzestanica. Since chemical composition of foods can alter toxicity of pesticides, in this work, the effect of coadministration of CAR and organophosphates on renal function has been studied and compared with the effect of coadministration of carvacrol loaded beta cyclodextrin-alginate-chitosan (BAC) based nanoflowers. Serum levels of urea and creatinine and histological examination were analyzed after 10 days of administration of chemicals. Malathion and parathion significantly increased urea and creatinine and induced renal inflammation. However, coadministration of CAR or BAC-CAR modified urea and creatinine and improved renal inflammation. BAC-CAR modified serum levels of urea more efficient than CAR (P < 0.05). It is concluded that BAC could be considered as a carrier for drugs used to treat renal disorders. Carvacrol can be used in the formulation of organophosphate pesticides, which may control pests more efficiently than conventional organophosphate pesticides.
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Affiliation(s)
- Ali Salari
- Department of Physiology, Faculty of Sciences, Qom Branch, Islamic Azad University, Qom, Iran
| | - Kambiz Roshanaei
- Department of Biology, Faculty of Sciences, Qom Branch, Islamic Azad University, Qom, Iran
| | - Bahram Rasoulian
- Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Javad Khalili Fard
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Lorestan University of Medical Sciences, Khorramabad, Iran; Hepatitis Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran.
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Quadros DG, Johnson TL, Whitney TR, Oliver JD, Oliva Chávez AS. Plant-Derived Natural Compounds for Tick Pest Control in Livestock and Wildlife: Pragmatism or Utopia? INSECTS 2020; 11:insects11080490. [PMID: 32752256 PMCID: PMC7469192 DOI: 10.3390/insects11080490] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/22/2020] [Accepted: 07/29/2020] [Indexed: 12/17/2022]
Abstract
Ticks and tick-borne diseases are a significant economic hindrance for livestock production and a menace to public health. The expansion of tick populations into new areas, the occurrence of acaricide resistance to synthetic chemical treatments, the potentially toxic contamination of food supplies, and the difficulty of applying chemical control in wild-animal populations have created greater interest in developing new tick control alternatives. Plant compounds represent a promising avenue for the discovery of such alternatives. Several plant extracts and secondary metabolites have repellent and acaricidal effects. However, very little is known about their mode of action, and their commercialization is faced with multiple hurdles, from the determination of an adequate formulation to field validation and public availability. Further, the applicability of these compounds to control ticks in wild-animal populations is restrained by inadequate delivery systems that cannot guarantee accurate dosage delivery at the right time to the target animal populations. More work, financial support, and collaboration with regulatory authorities, research groups, and private companies are needed to overcome these obstacles. Here, we review the advancements on known plant-derived natural compounds with acaricidal potential and discuss the road ahead toward the implementation of organic control in managing ticks and tick-borne diseases.
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Affiliation(s)
- Danilo G. Quadros
- Texas A&M AgriLife Research, San Angelo, TX 76901, USA; (D.G.Q.); (T.R.W.)
| | - Tammi L. Johnson
- Department of Rangelands, Wildlife and Fisheries Management, Texas A&M AgriLife Research, Texas A&M University, Uvalde, TX 78801, USA;
| | - Travis R. Whitney
- Texas A&M AgriLife Research, San Angelo, TX 76901, USA; (D.G.Q.); (T.R.W.)
| | - Jonathan D. Oliver
- Environmental Health Sciences, School of Public Health, University of Minnesota, Minneapolis, MN 55455, USA;
| | - Adela S. Oliva Chávez
- Department of Entomology, Texas A&M University, College Station, TX 77843, USA
- Correspondence: ; Tel.: +1-979-845-1946
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Nogueira JAP, Figueiredo A, Duarte JL, de Almeida FB, Santos MG, Nascimento LM, Fernandes CP, Mourão SC, Toscano JHB, Rocha LM, Chagas ACS. Repellency effect of Pilocarpus spicatus A. St.-Hil essential oil and nanoemulsion against Rhipicephalus microplus larvae. Exp Parasitol 2020; 215:107919. [PMID: 32442440 DOI: 10.1016/j.exppara.2020.107919] [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: 06/17/2019] [Revised: 02/14/2020] [Accepted: 05/15/2020] [Indexed: 11/26/2022]
Abstract
Rhipicephalus microplus, the cattle tick, is a major cause of economic losses in bovine production. Due to the widespread acaricidal resistance to commercially available products, as well as their toxicity and environmental impact, alternative control methods are required. Nanoformulations produced from plant extracts as bioactive substances are very promising as innovative acaricidal agents. Thus, the aim of this study was to evaluate the in vitro repellent activity of Pilocarpus spicatus essential oil and its nanoemulsion against R. microplus, using larval repellent test (RT). The essential oil was extracted by hydrodistillation, using a Clevenger-type apparatus. The nanoemulsion was prepared with 5% essential oil, 5% tween 80, and 90% water, using the phase inversion method (50 mg/mL). Limonene was the major component (46.8%) of the essential oil, as determined by gas chromatography-mass spectrometry (GC/MS) and confirmed by flame ionization detection (GC/FID). According to the RT results, the essential oil had a repellent activity greater than 69%, from concentrations of 3.12 mg/mL (69.81 ± 10%) to 50 mg/mL (98.10 ± 0.6%), whereas the nanoemulsion at 50 mg/mL presented repellent activities of 97.14 ± 1.37% and 97.89 ± 0.52% 6 and 10 h after treatment, respectively. These values regarding to total repellency were very close to those calculated for mortality corrected by Abbott's formula. The phase inversion method preserved the chemical and physical characteristics of the essential oil since both reached an equal repellent effect at the same concentration. Therefore, P. spicatus essential oil and nanoemulsion had excellent repellent activities against R. microplus larvae, demonstrating its potential for future use as an alternative for tick control.
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Affiliation(s)
- Jeane A P Nogueira
- Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil; Universidade Federal Fluminense (UFF), Niterói, RJ, Brazil
| | - Amanda Figueiredo
- Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Jaboticabal, SP, Brazil; Embrapa Pecuária Sudeste (CPPSE), São Carlos, SP, Brazil.
| | | | | | - Marcelo G Santos
- Universidade do Estado do Rio de Janeiro (UERJ), São Gonçalo, RJ, Brazil
| | - Leonor M Nascimento
- Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil; Universidade Federal Fluminense (UFF), Niterói, RJ, Brazil
| | | | | | | | - Leandro M Rocha
- Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil; Universidade Federal Fluminense (UFF), Niterói, RJ, Brazil
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