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Chlipała P, Tronina T, Dymarska M, Urbaniak M, Kozłowska E, Stępień Ł, Kostrzewa-Susłow E, Janeczko T. Multienzymatic biotransformation of flavokawain B by entomopathogenic filamentous fungi: structural modifications and pharmacological predictions. Microb Cell Fact 2024; 23:65. [PMID: 38402203 PMCID: PMC10893614 DOI: 10.1186/s12934-024-02338-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 02/16/2024] [Indexed: 02/26/2024] Open
Abstract
BACKGROUND Flavokawain B is one of the naturally occurring chalcones in the kava plant (Piper methysticum). It exhibits anticancer, anti-inflammatory and antimalarial properties. Due to its therapeutic potential, flavokawain B holds promise for the treatment of many diseases. However, due to its poor bioavailability and low aqueous solubility, its application remains limited. The attachment of a sugar unit impacts the stability and solubility of flavonoids and often determines their bioavailability and bioactivity. Biotransformation is an environmentally friendly way to improve the properties of compounds, for example, to increase their hydrophilicity and thus affect their bioavailability. Recent studies proved that entomopathogenic filamentous fungi from the genera Isaria and Beauveria can perform O-methylglycosylation of hydroxyflavonoids or O-demethylation and hydroxylation of selected chalcones and flavones. RESULTS In the present study, we examined the ability of entomopathogenic filamentous fungal strains of Beauveria bassiana, Beauveria caledonica, Isaria farinosa, Isaria fumosorosea, and Isaria tenuipes to transform flavokawain B into its glycosylated derivatives. The main process occurring during the reaction is O-demethylation and/or hydroxylation followed by 4-O-methylglycosylation. The substrate used was characterized by low susceptibility to transformations compared to our previously described transformations of flavones and chalcones in the cultures of the tested strains. However, in the culture of the B. bassiana KCh J1.5 and BBT, Metarhizium robertsii MU4, and I. tenuipes MU35, the expected methylglycosides were obtained with high yields. Cheminformatic analyses indicated altered physicochemical and pharmacokinetic properties in the derivatives compared to flavokawain B. Pharmacological predictions suggested potential anticarcinogenic activity, caspase 3 stimulation, and antileishmanial effects. CONCLUSIONS In summary, the study provided valuable insights into the enzymatic transformations of flavokawain B by entomopathogenic filamentous fungi, elucidating the structural modifications and predicting potential pharmacological activities of the obtained derivatives. The findings contribute to the understanding of the biocatalytic capabilities of these microbial cultures and the potential therapeutic applications of the modified flavokawain B derivatives.
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Affiliation(s)
- Paweł Chlipała
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, Wrocław, Norwida 25, 50-375, Poland.
| | - Tomasz Tronina
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, Wrocław, Norwida 25, 50-375, Poland
| | - Monika Dymarska
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, Wrocław, Norwida 25, 50-375, Poland
| | - Monika Urbaniak
- Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Strzeszyńska 34, 60-479, Poland
| | - Ewa Kozłowska
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, Wrocław, Norwida 25, 50-375, Poland
| | - Łukasz Stępień
- Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Strzeszyńska 34, 60-479, Poland
| | - Edyta Kostrzewa-Susłow
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, Wrocław, Norwida 25, 50-375, Poland
| | - Tomasz Janeczko
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, Wrocław, Norwida 25, 50-375, Poland.
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Ali AAB, Montasser AA, Mohamed SNA. Histopathological effects of the fruit extract of Citrullus colocynthis on the ovary of the tick Hyalomma dromedarii. EXPERIMENTAL & APPLIED ACAROLOGY 2024; 92:275-295. [PMID: 38347254 DOI: 10.1007/s10493-023-00895-z] [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: 06/27/2023] [Accepted: 12/30/2023] [Indexed: 03/12/2024]
Abstract
Hyalomma dromedarii is the predominant tick species parasitizing camels in Egypt which leads to mortalities in young animals that result in economic losses. It can transmit a lot of pathogens to animals and humans, such as the Crimean-Congo hemorrhagic fever virus, the Dhori virus, Kadam virus, Theileria annulata and spotted fever rickettsia. The continuous use of chemical acaricides has negative impact on the environment and almost led to acaricidal resistance, and hence the plant extracts represent alternative methods for controlling ticks. The present study was carried out to assess the histopathological effects on the ovary of fed female Hyalomma dromedarii following immersion in the ethanolic extract of fruits of Citrullus colocynthis (100 mg/mL). Light, scanning and transmission electron microscopy observations provided evidence that Citrullus colocynthis caused extensive damage to oocytes. Destruction of the internal organelles of oocytes, along with delay and/or inhibition of vitellogenesis were demonstrated. This is the first histological study that points to damage in H. dromedarii ovaries following treatment with the ethanolic extract of fruits of C. colocynthis. The data presented suggest that the plant extract affects the ovary either directly by entering the oocytes and/or indirectly by damaging the gut cells and digestion of blood that interfere with the development of oocytes, so it can be used as a promising agent for tick control.
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Affiliation(s)
- Asmaa Ali Baioumy Ali
- Zoology Department, Faculty of Science, Ain Shams University, Abbassia, Cairo, 11566, Egypt.
| | - Ashraf Ahmed Montasser
- Zoology Department, Faculty of Science, Ain Shams University, Abbassia, Cairo, 11566, Egypt
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Nguyen HTM, Nguyen PKP, Ngo DTT, Sichaem J, Do LTM. Two new dimethylpyranoflavanones from the roots of Melodorum fruticosum. Nat Prod Res 2024; 38:433-439. [PMID: 36129773 DOI: 10.1080/14786419.2022.2126467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 09/10/2022] [Indexed: 10/14/2022]
Abstract
Two previously unreported dimethylpyranoflavanones, pyronomelodorones A and B (1 and 2), along with five known compounds, 7-O-methyldihydrowogonin (3), 5,6,7-trimethoxyflavanone (4), 5,6-dihydroxy-7-methoxy-dihydroflavone (5), 5,7,8-trimethoxydihydroflavone (6), and pinostrobin (7), were isolated from the roots of Melodorum fruticosum. The structures of all isolates were fully characterized using spectroscopic data and comparison with the previous literature. All isolates were evaluated for their in vitro α-glucosidase inhibition and their cytotoxicity against KB, HepG2, and MCF7 cell lines. Among the isolates, compound 1 exhibited the most inhibitory activity against α-glucosidase and was superior to the positive control with an IC50 value of 1.32 μM. Compounds 1 and 2 showed weak cytotoxicity against the three human cancer cell lines, with IC50 values in the range of 53.3-79.0 μM.
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Affiliation(s)
- Huong T M Nguyen
- Department of Chemistry, University of Science, HCM National University, Ho Chi Minh City, Vietnam
- Institute of Environment-Energy Technology, Sai Gon University, Ho Chi Minh City, Vietnam
| | - Phung K P Nguyen
- Department of Chemistry, University of Science, HCM National University, Ho Chi Minh City, Vietnam
| | - Duong T T Ngo
- Department of Chemistry, University of Science, HCM National University, Ho Chi Minh City, Vietnam
| | - Jirapast Sichaem
- Research Unit in Natural Products Chemistry and Bioactivities, Faculty of Science and Technology, Thammasat University Lampang Campus, Lampang, Thailand
| | - Lien T M Do
- Institute of Environment-Energy Technology, Sai Gon University, Ho Chi Minh City, Vietnam
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Dutra Barroso Gomes N, Paula Magalhães E, Rodrigues Ribeiro L, Cavalcante JW, Morais Gomes Maia M, Cunha da Silva FR, Ali A, Machado Marinho M, Silva Marinho E, Silva Dos Santos H, Costa Martins AM, Róseo Paula Pessoa Bezerra de Menezes R. Trypanocidal potential of synthetic p-aminochalcones: In silico and in vitro evaluation. Bioorg Chem 2023; 141:106931. [PMID: 37879182 DOI: 10.1016/j.bioorg.2023.106931] [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: 07/19/2023] [Revised: 10/10/2023] [Accepted: 10/19/2023] [Indexed: 10/27/2023]
Abstract
Chagas disease (CD) is a neglected tropical disease of worldwide health concern, caused by the flagellate protozoan Trypanosoma cruzi (T. cruzi), endemic in Latin America and present in North America and Europe. The WHO recommended drug for CD, benznidazole has low safety profile and several limitations. Therefore, an entity with better therapeutic potential to treat CD is required. Chalcones are an important class of compounds, which have shown antichagasic potential. Thus, the objective of this study was to evaluate the activity of synthetic p-aminochalcones against T. cruzi. Chalcones 1 and 2 were synthesized by Claisen-Schmidt condensation and characterized by both spectroscopic and theoretical methods. Initially, they were submitted to molecular docking simulations using cruzain and trypanothione reductase (TR) enzymes. It was expected to observe the possible interactions of chalcones with the catalytic site and other important regions of these main pharmacological targets of T. cruzi. Their cytotoxicity within host cells were assessed by MTT reduction assay using LLC-MK2 cells, with CC50 = 85.6 ± 9.2 µM and 1115 ± 381.7 µM for chalcones 1 and 2, respectively. These molecules were also tested against epimastigote and trypomastigote life forms of T. cruzi, causing reduction in the number of viable parasites. For the evaluation of the effect on intracellular amastigotes, infected LLC-MK2 cells were incubated with the chalcones for 24 h, causing reduction in the percentage of infected cells and the number of amastigotes/100 cells. Finally, flow cytometry assays were performed for analyzing cell death mechanisms (7-AAD/AxPE labelling), cytoplasmic ROS accumulation (DCFH-DA assay) and mitochondrial transmembrane potential disruption (Rho123 assay). Both chalcones (1 and 2) caused membrane damage, ROS accumulation and mitochondrial depolarization. In conclusion, the synthetic p-aminochalcones presented trypanocidal effect, causing membrane damage and oxidative stress. Their mechanism of action may be related to cruzain and TR inhibition.
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Affiliation(s)
| | - Emanuel Paula Magalhães
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Lyanna Rodrigues Ribeiro
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Ceará, Fortaleza, CE, Brazil
| | | | | | | | - Arif Ali
- Post-Graduate Program in Pharmacology, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Márcia Machado Marinho
- Theoretical and Eletrochemical Chemistry Research Group, State University of Ceará, Limoeiro do Norte, CE, Brazil; State University of Vale do Acaraú, Center for Exact Sciences and Technology, Sobral, CE, Brazil
| | - Emmanuel Silva Marinho
- Theoretical and Eletrochemical Chemistry Research Group, State University of Ceará, Limoeiro do Norte, CE, Brazil
| | - Hélcio Silva Dos Santos
- State University of Vale do Acaraú, Center for Exact Sciences and Technology, Sobral, CE, Brazil
| | - Alice Maria Costa Martins
- Department of Clinical and Toxicological Analysis, Federal University of Ceará, Fortaleza, CE, Brazil
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Nematollahi MH, Mehrabani M, Hozhabri Y, Mirtajaddini M, Iravani S. Antiviral and antimicrobial applications of chalcones and their derivatives: From nature to greener synthesis. Heliyon 2023; 9:e20428. [PMID: 37810815 PMCID: PMC10556610 DOI: 10.1016/j.heliyon.2023.e20428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 09/22/2023] [Accepted: 09/25/2023] [Indexed: 10/10/2023] Open
Abstract
Chalcones and their derivatives have been widely studied due to their versatile pharmacological and biological activities, such as anti-inflammatory, antibacterial, antiviral, and antitumor effects. These compounds have shown suitable antiviral effects through the selective targeting of a variety of viral enzymes, including lactate dehydrogenase, glyceraldehyde-3-phosphate dehydrogenase (GAPDH), fumarate reductase, protein tyrosine phosphatase, topoisomerase-II, protein kinases, integrase/protease, and lactate/isocitrate dehydrogenase, among others. Chalcones and their derivatives have displayed excellent potential for combating pathogenic bacteria and fungi (especially, multidrug-resistant bacteria). However, relevant mechanisms should be further explored, focusing on inhibitory effects against DNA gyrase B, UDP-N-acetylglucosamine enolpyruvyl transferase (MurA), and efflux pumps (e.g., NorA), among others. In addition, the antifungal and antiparasitic activities of these compounds (e.g., antitrypanosomal and antileishmanial properties) have prompted additional explorations. Nonetheless, systematic analysis of the relevant mechanisms, biosafety issues, and pharmacological properties, as well as clinical translation studies, are vital for practical applications. Herein, recent advancements pertaining to the antibacterial, antiviral, antiparasitic, and antifungal activities of chalcones and their derivatives are deliberated, focusing on the relevant mechanisms of action, crucial challenges, and future prospects. Furthermore, due to the great importance of greener and more sustainable synthesis of these valuable compounds, especially on an industrial scale, the progress made in this field has been briefly discussed. Hopefully, this review can serve as a catalyst for researchers to delve deeper into the exploration and designing of novel chalcone compounds with medicinal properties, especially against pathogenic viruses and multidrug-resistant bacteria as major causes of concern for human health.
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Affiliation(s)
- Mohammad Hadi Nematollahi
- Herbal and Traditional Medicines Research Center, School of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Mehrnaz Mehrabani
- Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Yaser Hozhabri
- Applied Cellular and Molecular Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Maryamossadat Mirtajaddini
- Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Siavash Iravani
- Independent Researcher, W Nazar ST, Boostan Ave, Isfahan, Iran
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Cavalcante CHL, Almeida-Neto FWDQ, da Rocha MN, Bandeira PN, de Menezes RRPPB, Paula Magalhães E, Sampaio TL, Marinho ES, Marinho MM, Maria Costa Martins A, Dos Santos HS. Antichagasic evaluation, molecular docking and ADMET properties of the chalcone (2 E)-3-(2-fluorophenyl)-1-(2-hydroxy- 3,4,6-trimethoxyphenyl)prop-2-en-1-one against Trypanosoma cruzi. J Biomol Struct Dyn 2023; 41:7463-7479. [PMID: 36120936 DOI: 10.1080/07391102.2022.2123394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 09/02/2022] [Indexed: 10/14/2022]
Abstract
Characterized as a neglected disease, Chagas disease is an infection that, in the current scenario, affects about 8 million people per year, with a higher incidence in underdeveloped countries, Chagas is responsible for physiological disabilities that result in impacts that are slightly reflected in world socioeconomic stability. Although treatments are based on drugs such as Benznidazole, the pathology lacks a continuous treatment method with low toxicological incidence. The present study estimates the anti-chagasic activity of the synthetic chalcone CPN2F based on the alignment between in vitro tests and structural classification in silico studies, molecular docking and ADMET studies. The in vitro tests showed a reduction in the protozoan metabolism in host cells (LLC-MK2). At the same time, the molecular docking models evaluate this growth inhibition through the synergistic effect associated with Benznida- zole against validated therapeutic target key stages (Cruzaine TcGAPDH and Trypanothione reductase) of the Trypanosoma cruzi development cycle. The in silico prediction results reveal an alignment between pharmacokinetic attributes, such as renal absorption and release, which allow the preparation of CPN2F as an antichagasic drug with a low incidence of organic toxicity.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Carlos Henrique Leitão Cavalcante
- Postgraduate Program in Biotechnology - PPGB-Renorbio, State University of Ceara, Fortaleza, CE, Brazil
- Federal Institute of Education and Technology of Ceara, Maracanau, CE, Brazil
| | | | - Matheus Nunes da Rocha
- Center for Science and Technology, Postgraduate Program in Natural Sciences, State University of Ceará, Fortaleza, CE, Brazil
| | - Paulo Nogueira Bandeira
- Center for Exact Sciences and Technology, State University of Vale do Acaraú, Sobral, CE, Brazil
| | | | - Emanuel Paula Magalhães
- Department of Clinical and Toxicological Analysis, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Tiago Lima Sampaio
- Department of Clinical and Toxicological Analysis, Federal University of Ceará, Fortaleza, CE, Brazil
| | | | - Márcia Machado Marinho
- Center for Exact Sciences and Technology, State University of Vale do Acaraú, Sobral, CE, Brazil
| | - Alice Maria Costa Martins
- Department of Clinical and Toxicological Analysis, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Hélcio Silva Dos Santos
- Postgraduate Program in Biotechnology - PPGB-Renorbio, State University of Ceara, Fortaleza, CE, Brazil
- Center for Science and Technology, Postgraduate Program in Natural Sciences, State University of Ceará, Fortaleza, CE, Brazil
- Center for Exact Sciences and Technology, State University of Vale do Acaraú, Sobral, CE, Brazil
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Chudin AA, Zlotnikov ID, Krylov SS, Semenov VV, Kudryashova EV. Allylpolyalkoxybenzene Inhibitors of Galactonolactone Oxidase from Trypanosoma cruzi. BIOCHEMISTRY (MOSCOW) 2023; 88:131-141. [PMID: 37068875 DOI: 10.1134/s000629792301011x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Inhibition of biosynthetic pathways of compounds essential for Trypanosoma cruzi is considered as one of the possible action mechanisms of drugs against Chagas disease. Here, we investigated the inhibition of galactonolactone oxidase from T. cruzi (TcGAL), which catalyzes the final step in the synthesis of vitamin C, an antioxidant that T. cruzi is unable to assimilate from outside and must synthesize itself, and identified allylbenzenes from plant sources as a new class of TcGAL inhibitors. Natural APABs (apiol, dillapiol, etc.) inhibited TcGAL with IC50 = 20-130 µM. The non-competitive mechanism of TcGAL inhibition by apiol was established. Conjugation of APABs with triphenylphosphonium, which ensures selective delivery of biologically active substances to the mitochondria, increased the efficiency and/or the maximum percentage of TcGAL inhibition compared to nonmodified APABs.
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Affiliation(s)
- Andrey A Chudin
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Igor D Zlotnikov
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Sergey S Krylov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Victor V Semenov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Elena V Kudryashova
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia.
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Antimicrobial Activity of Some Plant Extracts and Their Applications in Homemade Tomato Paste and Pasteurized Cow Milk as Natural Preservatives. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8090428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Synthetic chemical preservatives are widely used in the food industry to delay the deterioration caused by microbial growth, enzyme activities and oxidation reactions. The last few decades have witnessed marked interest in finding natural food preservatives due to the potential health damage of synthetic preservatives; consumers have become skeptical of consuming foods containing these additives. Polyphenols used as natural preservatives that can be extracted from fruits, vegetables, herbs and spices provide the best alternative for partial or complete replacement of their synthetic analogues. The present study’s emphasis was on employing different plant extracts to be efficiently used as antimicrobial agents for developing replacements for the synthetic chemical additives in food products. The study also investigated the antimicrobial potentialities of five medicinal plants, widely used in Egypt (sumac, tamarind, rosemary, roselle and lemon) against six microbial markers (E. coli, P. aeruginosae, B. subtilis, S. aureus, Penicillium sp. and A. niger.). Sumac extracts showed the best activity against all tested microorganisms, producing the widest inhibition zones ranging from 14 to 45 mm, followed by tamarind and roselle extracts, with inhibition zones ranging from 8–36 and 8–34 mm, respectively. On the other hand, extracts of rosemary and lemon showed variable antimicrobial activity. All extracts from all tested plants were less active against fungal species than bacterial species. In all cases, the organic extracts (80% methanol, 80% ethanol) showed the same or greater activity than the aqueous extracts. In addition, the methanolic extracts showed the strongest and broadest spectrum. The most sensitive strain to plant extracts was B. subtilis, while the most resistant strain was P. aeruginosae. The MIC and MBC or MFC values of methanolic extracts were assayed using the broth dilution method. Sumac extract showed the best activity against all tested microorganisms with the lowest values of MIC and MBC or MFC (from 0.260 to 0.877 and 0.310 to 1.316 mg/mL, respectively, for bacteria, and from 1.975 to 2.5 and 2.5 to 4.444 mg/mL, respectively, for fungi). Interestingly, the tested extracts inhibited microbial growth in tomato paste and pasteurized cow milk for a long storage period (increase shelf life) as compared to the control samples. In conclusion, herbal and spice extracts could be successfully applied as natural antimicrobials for the elimination of food borne microbes and pathogen growth.
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Gareh A, Hassan D, Essa A, Kotb S, Karmi M, Mohamed AEHH, Alkhaibari AM, Elbaz E, Elhawary NM, Hassanen EAA, Lokman MS, El-Gohary FA, Elmahallawy EK. Acaricidal Properties of Four Neem Seed Extracts (Azadirachta indica) on the Camel Tick Hyalomma dromedarii (Acari: Ixodidae). Front Vet Sci 2022; 9:946702. [PMID: 35937305 PMCID: PMC9354004 DOI: 10.3389/fvets.2022.946702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 06/22/2022] [Indexed: 11/13/2022] Open
Abstract
Tick infestation remains one of the major health problems that affect the productivity and comfort of camels. The control of ticks mainly relies on using chemical acaracides. Limited information is available on the potential benefits and activity of various neem extracts on Hyalomma ticks. The present study investigated the acaricidal activity of neem seed extracts at different concentrations against developmental stages of the camel tick Hyalomma dromedarii in comparison to Butox and diazinon. The acaricidal activity of three extracts, namely, hexane extract (HE), methyl chloride extract (MCE), and methanol extract (ME), of neem seeds (Azadirachta indica) were tested at varying concentrations of 5, 10, 15, and 20% on engorged H. dromedarii female ticks at days 1, 3, 5, 7, 12, 16, 20, 28, 37, and 43 after treatment (DPT). Interestingly, results of applying different neem seed extracts to engorged H. dromedarii female ticks showed that the most effective extract was hexane at concentration 20%, causing 100% mortality at 1st day post-application, while methanol extract at 20% and dichloromethane extract at 20% caused the death of all ticks at 28th day posttreatment as compared to Butox® 5.0 and Diazinon-60, which resulted in mortality of all ticks at 3 and 5 DPT, respectively. In addition, no mortality was reported with the application of aqueous extract (AE), which served as the control group. Furthermore, the neem hexane extract exhibited high efficacy against reproductive performance of female ticks, whereas no fertility or oviposition was reported at all of their concentrations. Additionally, no hatchability occurred using all neem extracts, except the aqueous extract, which showing no effect. In the present study, larvae responded more rapidly to the plant extracts, whereas mortality of all larvae was recorded at 24 h after treatment with 5% hexane. Taken together, this study pointed out that the acaricidal effect of hexane extract of neem seeds was more effective and could be economically used for controlling H. dromedarii ticks.
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Affiliation(s)
- Ahmed Gareh
- Department of Parasitology, Faculty of Veterinary Medicine, Aswan University, Aswan, Egypt
| | - Dalia Hassan
- Department of Animal and Poultry Hygiene, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Asmaa Essa
- Department of Animal and Poultry Hygiene, Faculty of Veterinary Medicine, Aswan University, Aswan, Egypt
| | - Saber Kotb
- Department of Animal and Poultry Hygiene, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Mohammed Karmi
- Department of Food Hygiene, Faculty of Veterinary Medicine, Aswan University, Aswan, Egypt
| | | | | | - Elzahara Elbaz
- Department of Internal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Nagwa M. Elhawary
- Department of Parasitology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr El Sheikh, Egypt
| | - Eman A. A. Hassanen
- Department of Parasitology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Maha S. Lokman
- Department of Biology, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
| | - Fatma A. El-Gohary
- Department of Hygiene and Zoonoses, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Ehab Kotb Elmahallawy
- Department of Zoonoses, Faculty of Veterinary Medicine, Sohag University, Sohag, Egypt
- *Correspondence: Ehab Kotb Elmahallawy
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Chloride substitution on 2-hydroxy-3,4,6-trimethoxyphenylchalcones improves in vitro selectivity on Trypanosoma cruzi strain Y. Chem Biol Interact 2022; 361:109920. [DOI: 10.1016/j.cbi.2022.109920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 03/14/2022] [Accepted: 03/30/2022] [Indexed: 01/12/2023]
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Jiang L, Liu B, Hou S, Su T, Fan Q, Alyafeai E, Tang Y, Wu M, Liu X, Li J, Hu Y, Li W, Zheng Z, Liu Y, Wu J. Discovery and evaluation of chalcone derivatives as novel potential anti-Toxoplasma gondii agents. Eur J Med Chem 2022; 234:114244. [DOI: 10.1016/j.ejmech.2022.114244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 01/20/2022] [Accepted: 02/26/2022] [Indexed: 01/08/2023]
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Thiosugar naphthalene diimide conjugates: G-quadruplex ligands with antiparasitic and anticancer activity. Eur J Med Chem 2022; 232:114183. [DOI: 10.1016/j.ejmech.2022.114183] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/27/2022] [Accepted: 02/03/2022] [Indexed: 12/26/2022]
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Hosny M, Fawzy M, El-Fakharany EM, Omer AM, El-Monaem EMA, Khalifa RE, Eltaweil AS. Biogenic synthesis, characterization, antimicrobial, antioxidant, antidiabetic, and catalytic applications of platinum nanoparticles synthesized from Polygonum salicifolium leaves. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 2022; 10:106806. [DOI: 10.1016/j.jece.2021.106806] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
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Prognostic Value of Immunoglobulin G (IgG) Patterns by Western Blotting Immunodetection in Treated Dogs Previously Infected with Leishmania infantum. Vet Sci 2021; 8:vetsci8120293. [PMID: 34941820 PMCID: PMC8705871 DOI: 10.3390/vetsci8120293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/19/2021] [Accepted: 11/25/2021] [Indexed: 11/17/2022] Open
Abstract
Leishmaniasis is a heterogeneous group of neglected tropical diseases with various clinical syndromes, which is caused by obligate intracellular protozoa of the genus Leishmania and transmitted by the bite of a female phlebotomine sandfly. Humans and several animal species are considered as reservoirs of the disease. Among other animal species, dogs are the most important reservoirs in a domestic environment, maintaining the endemic focus of the parasite. The behavior of the disease progression and the clinical symptoms of the disease in the infected dog is mainly associated with depressed cellular immunity and strong humoral response. This study aimed to assess the role of Western blotting in the analysis of the idiotype expression of the two main immunoglobulins (IgG1 and IgG2) in dogs that are naturally infected with Leishmania infantum (L. infantum) and treated with N-methyl meglumine antimoniate. Interestingly, for the first time, our study identified several L. infantum antigen polypeptides (14, 31, 33, 49, 64, 66, 99, and 169 kDa) that more frequently stimulate an immune reaction in recovered dogs after treatment, whereas in the non-recovered group of dogs, four antigen polypeptides of L. infantum with molecular weights of 31, 49, 66, and 115 kDa with unfavorable prognosis were identified. Clearly, these interesting findings confirm the strong association between the detected immunodominant bands and the successful recovery in treated dogs that can be used for differentiating the treated dogs from the untreated dogs, as well as the markers of a favorable or unfavorable prognosis and, as a consequence, the prediction of the clinical outcome of the disease. Likewise, these data could be helpful in the implementation of novel vaccines from the detected antigens.
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Translational Research of Zoonotic Parasites: Toward Improved Tools for Diagnosis, Treatment and Control. Pathogens 2021; 10:pathogens10111416. [PMID: 34832572 PMCID: PMC8621207 DOI: 10.3390/pathogens10111416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 10/28/2021] [Indexed: 12/02/2022] Open
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Seimandi G, Álvarez N, Stegmayer MI, Fernández L, Ruiz V, Favaro MA, Derita M. An Update on Phytochemicals and Pharmacological Activities of the Genus Persicaria and Polygonum. Molecules 2021; 26:5956. [PMID: 34641500 PMCID: PMC8512787 DOI: 10.3390/molecules26195956] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/22/2021] [Accepted: 09/25/2021] [Indexed: 11/30/2022] Open
Abstract
The discovery of new pharmaceutical identities, particularly anti-infective agents, represents an urgent need due to the increase in immunocompromised patients and the ineffectiveness/toxicity of the drugs currently used. The scientific community has recognized in the last decades the importance of the plant kingdom as a huge source of novel molecules which could act against different type of infections or illness. However, the great diversity of plant species makes it difficult to select them with probabilities of success, adding to the fact that existing information is difficult to find, it is atomized or disordered. Persicaria and Polygonum constitute two of the main representatives of the Polygonaceae family, which have been extensively used in traditional medicine worldwide. Important and structurally diverse bioactive compounds have been isolated from these genera of wild plants; among them, sesquiterpenes and flavonoids should be remarked. In this article, we firstly mention all the species reported with pharmacological use and their geographical distribution. Moreover, a number of tables which summarize an update detailing the type of natural product (extract or isolated compound), applied doses, displayed bioassays and the results obtained for the main bioactivities of these genera cited in the literature during the past 40 years. Antimicrobial, antioxidant, analgesic and anti-inflammatory, antinociceptive, anticancer, antiviral, antiparasitic, anti-diabetic, antipyretic, hepatoprotective, diuretic, gastroprotective and neuropharmacological activities were explored and reviewed in this work, concluding that both genera could be the source for upcoming molecules to treat different human diseases.
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Affiliation(s)
- Gisela Seimandi
- ICiAgro Litoral, CONICET, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Kreder 2805, Esperanza 3080HOF, Argentina; (G.S.); (N.Á.); (M.I.S.); (L.F.); (M.A.F.)
| | - Norma Álvarez
- ICiAgro Litoral, CONICET, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Kreder 2805, Esperanza 3080HOF, Argentina; (G.S.); (N.Á.); (M.I.S.); (L.F.); (M.A.F.)
| | - María Inés Stegmayer
- ICiAgro Litoral, CONICET, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Kreder 2805, Esperanza 3080HOF, Argentina; (G.S.); (N.Á.); (M.I.S.); (L.F.); (M.A.F.)
| | - Laura Fernández
- ICiAgro Litoral, CONICET, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Kreder 2805, Esperanza 3080HOF, Argentina; (G.S.); (N.Á.); (M.I.S.); (L.F.); (M.A.F.)
| | - Verónica Ruiz
- ICiAgro Litoral, CONICET, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Kreder 2805, Esperanza 3080HOF, Argentina; (G.S.); (N.Á.); (M.I.S.); (L.F.); (M.A.F.)
| | - María Alejandra Favaro
- ICiAgro Litoral, CONICET, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Kreder 2805, Esperanza 3080HOF, Argentina; (G.S.); (N.Á.); (M.I.S.); (L.F.); (M.A.F.)
| | - Marcos Derita
- ICiAgro Litoral, CONICET, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Kreder 2805, Esperanza 3080HOF, Argentina; (G.S.); (N.Á.); (M.I.S.); (L.F.); (M.A.F.)
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario S2002LRK, Argentina
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