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de Alencar MVOB, Islam MT, da Mata AMOF, Dos Reis AC, de Lima RMT, de Oliveira Ferreira JR, de Castro E Sousa JM, Ferreira PMP, de Carvalho Melo-Cavalcante AA, Rauf A, Hemeg HA, Alsharif KF, Khan H. Anticancer effects of phytol against Sarcoma (S-180) and Human Leukemic (HL-60) cancer cells. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:80996-81007. [PMID: 37308630 DOI: 10.1007/s11356-023-28036-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 05/29/2023] [Indexed: 06/14/2023]
Abstract
Phytol (Pyt), a diterpenoid, possesses many important bioactivities. This study evaluates the anticancer effects of Pyt on sarcoma 180 (S-180) and human leukemia (HL-60) cell lines. For this purpose, cells were treated with Pyt (4.72, 7.08, or 14.16 μM) and a cell viability assay was performed. Additionally, the alkaline comet assay and micronucleus test with cytokinesis were also performed using doxorubicin (6 μM) and hydrogen peroxide (10 mM) as positive controls and stressors, respectively. Results revealed that Pyt significantly reduced the viability and rate of division in S-180 and HL-60 cells with IC50 values of 18.98 ± 3.79 and 1.17 ± 0.34 μM, respectively. Pyt at 14.16 μM exerted aneugenic and/or clastogenic effects in S-180 and HL-60 cells, where the number of micronuclei and other nuclear abnormalities (e.g., nucleoplasmic bridges and nuclear buds) were frequently observed. Moreover, Pyt at all concentrations induced apoptosis and showed necrosis at 14.16 μM, suggesting its anticancer effects on the tested cancer cell lines. Taken together, Pyt showed promising anticancer effects, possibly through inducing apoptosis and necrosis mechanisms, and it exerted aneugenic and/or clastogenic effects on the S-180 and HL-60 cell lines.
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Affiliation(s)
- Marcus Vinícius Oliveira Barros de Alencar
- Postgraduate Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, 64.049-550, Brazil
- Biomedical Sciences Research and Innovation Laboratory, Postgraduate Program in Biotechnology, INTA University Center, Sobral, 62.011-230, Brazil
- Laboratory of Toxicological Genetics, Department of Biochemistry and Pharmacology, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Muhammad Torequl Islam
- Postgraduate Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, 64.049-550, Brazil
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Ana Maria Oliveira Ferreira da Mata
- Postgraduate Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, 64.049-550, Brazil
- Laboratory of Toxicological Genetics, Department of Biochemistry and Pharmacology, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Antonielly Campinho Dos Reis
- Postgraduate Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, 64.049-550, Brazil
- Laboratory of Toxicological Genetics, Department of Biochemistry and Pharmacology, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Rosália Maria Torres de Lima
- Postgraduate Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, 64.049-550, Brazil
- Laboratory of Toxicological Genetics, Department of Biochemistry and Pharmacology, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | | | - João Marcelo de Castro E Sousa
- Postgraduate Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, 64.049-550, Brazil
- Laboratory of Toxicological Genetics, Department of Biochemistry and Pharmacology, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Paulo Michel Pinheiro Ferreira
- Postgraduate Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, 64.049-550, Brazil
- Laboratory of Experimental Cancerology, Department of Biophysics and Physiology, Federal University of Piauí, Teresina, 64.049-550, Brazil
| | - Ana Amélia de Carvalho Melo-Cavalcante
- Postgraduate Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, 64.049-550, Brazil
- Laboratory of Toxicological Genetics, Department of Biochemistry and Pharmacology, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Anbar, Swabi, Khyber Pakhtunkhwa, 23430, Pakistan
| | - Hassan A Hemeg
- Department of Medical Laboratory Technology, College of Applied Medical Sciences, Taibah University, Al-Medinah Al-Monawara, 41411, Saudi Arabia
| | - Khalaf F Alsharif
- Department of Clinical Laboratory, College of Applied Medical Science, Taif University, Taif, 21944, Saudi Arabia
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University Mardan, Mardan, 23200, Pakistan.
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2
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Medicinal plants as potential therapeutic agents for trypanosomosis: a systematic review. ADVANCES IN TRADITIONAL MEDICINE 2022. [DOI: 10.1007/s13596-022-00662-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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3
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Nekoei S, Khamesipour F, Habtemariam S, de Souza W, Mohammadi Pour P, Hosseini SR. The anti‐
Trypanosoma
activities of medicinal plants: A systematic review of the literature. Vet Med Sci 2022; 8:2738-2772. [DOI: 10.1002/vms3.912] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Shahin Nekoei
- Faculty of Veterinary Medicine Shahrekord Branch Islamic Azad University Shahrekord Iran
| | - Faham Khamesipour
- Faculty of Veterinary Medicine Shahrekord Branch Islamic Azad University Shahrekord Iran
- Center for Research and Training in Skin Diseases and Leprosy Tehran University of Medical Sciences Tehran Iran
| | - Solomon Habtemariam
- Pharmacognosy Research Laboratories and Herbal Analysis Services University of Greenwich Central Avenue Chatham‐Maritime Gillingham Kent UK
| | - Wanderley de Souza
- Laboratório de Ultraestrutura Celular Hertha Meyer, Instituto de Biofísica Carlos Chagas Filho Universidade Federal do Rio de Janeiro Rio de Janeiro RJ Brazil
- Instituto Nacional de Ciência e Tecnologia em Biologia Estrutural e Bioimagens e Centro Nacional de Biologia Estrutural e Bioimagens Universidade Federal do Rio de Janeiro Rio de Janeiro RJ Brazil
| | - Pardis Mohammadi Pour
- Phytochemistry Research Center Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Seyed Reza Hosseini
- Faculty of Veterinary Medicine Shahrekord Branch Islamic Azad University Shahrekord Iran
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4
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Antitrypanosomal and Anthelminthic Properties of Ethanol Extracts of Carica papaya Linn. and Ceiba pentandra (L) Gaertn. J CHEM-NY 2022. [DOI: 10.1155/2022/5251930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The most common diseases that affect low-income countries are helminthosis and trypanosomosis. In Ghana, and in many other African countries, herbal treatment of various diseases is still common. In the present study, we sought to determine the antitrypanosomal and anthelminthic activities of Carica papaya and Ceiba pentandra. The ethanol extracts of Carica papaya stem bark (PPSe) and leaves (PPLe) and ethanol extracts of Ceiba pentandra stem bark (CPSe) and leaves (CPLe) were screened against Trypanosoma brucei brucei and Pheretima posthuma worms in vitro. CPSe exhibited strong antitrypanosomal activity, while the other extracts exhibited moderate activity against T. b. brucei. All the extracts showed weak selective indices (SI) when tested on Jurkat cell lines, which is indicative of a potential toxic effect. When the extracts were screened against P. posthuma worms, only PPSe and CPSe were able to kill the worms after the exposure time at concentrations of 2.5, 5, and 10 mg/mL. PPSe was again the only extract that potentiated the anthelminthic activity of albendazole against P. posthuma worms. Preliminary phytochemical screening and GC-MS analysis revealed the presence of compounds with antitrypanosomal and anthelminthic properties. The results confirmed the potential of C. papaya and C. pentandra as remedies for trypanosomosis and helminthosis and also gives credence to their folkloric use.
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Aminu S, Ibrahim MA, Dada Chechet G, Onyike E. Chemotherapeutic potentials of β-ionone against Trypanosoma congolense infection: Inhibition of parasite proliferation, anemia development, trans-sialidase (TconTS3 and TconTS4) gene expressions, and phospholipase A 2. Chem Biol Drug Des 2022; 99:908-922. [PMID: 35353953 DOI: 10.1111/cbdd.14048] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 03/19/2022] [Accepted: 03/26/2022] [Indexed: 11/26/2022]
Abstract
Trypanosoma congolense is a pathogenic African animal trypanosome species causing devastating conditions leading to death of an infected host. The drawbacks of the existing trypanocidal drugs have led to the search for new drug candidates. In this study, β-ionone at 15 and 30 mg/kg body weight (BW) was orally administered to T. congolense infected rats for 14 days followed by an assessment of anemia, organ damages, and the expression of T. congolense trans-sialidase gene variants. A significant decrease in parasitemia (p < .05) was observed in the animals treated with 15 mg/kg BW β-ionone besides increased animal survival rate. A trypanosome-induced decrease in packed cell volume (PCV) and histopathological changes across tissues was significantly (p < .05) ameliorated following treatment with both doses of β-ionone. This is in addition to reversing the parasite-induced upsurge in free serum sialic acid (FSA) and expression of T. congolense trans-sialidase gene variants (TconTS1, TconTS3, and TconTS4). Correlation analysis revealed a positive correlation (p > .05) between FSA with the TconTS gene expressions. In addition, the compound inhibited partially purified T. congolense sialidase and phospholipase A2 via mixed inhibition pattern with inhibition binding constants of 25.325 and 4.550 µM, respectively, while molecular docking predicted binding energies of -5.6 kcal/mol for both enzymes. In conclusion, treatment with β-ionone suppressed T. congolense proliferation and protected the animals against some of the parasite-induced pathologies whilst the effect on anemia development might be due to inhibition of sialidase and PLA2 activities as well as the expression levels of TconTS3 and TconTS4.
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Affiliation(s)
- Suleiman Aminu
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
| | - Mohammed Auwal Ibrahim
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
| | - Gloria Dada Chechet
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
| | - Elewechi Onyike
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
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6
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Buvanesvaragurunathan K, Ganesh J, Nagul Kumar S, Porchezhiyan V, Radha A, Azhahianambi P, Pandikumar P, Ignacimuthu S. In vitro growth inhibitory effect of selected 18β-glycyrrhetinic acid esters on Theileriaannulata. Exp Parasitol 2022; 236-237:108258. [PMID: 35421387 DOI: 10.1016/j.exppara.2022.108258] [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: 10/12/2021] [Revised: 03/17/2022] [Accepted: 04/03/2022] [Indexed: 11/04/2022]
Abstract
Glycyrrhetinic acid (GA) is one of the important Pentacyclic Triterpenoids (PT) found in the roots of licorice. This study aimed to evaluate the in vitro growth inhibitory effect of 18β-GA (18β-Glycyrrhetinic acid) and C-30 esters against Theileria annulata, the causative agent of Tropical Bovine Theileriosis. C-30 esters of 18β-GA were synthesized and their structures were elucidated using spectroscopy. The pharmacodynamic properties of 18β-GA and its C-30 esters were predicted using DataWarrior and Swiss ADME tools. Cattle isolates of T. annulata schizont-infected bovine lymphoblastoid cells were cultured using standard conditions and the growth inhibitory effect of GA and its esters were evaluated using MTT assay. The isopropyl ester of 18β-GA (GI50- 1.638 μM; R2- 0.818) showed improved anti-theileriosis efficacy than other 18β-GA derivatives. The propyl (GI50 - 5.549 μM), ethyl (GI50 - 5.638 μM), and benzyl (GI50 - 7.431 μM) esters also showed considerable inhibitory effect. The GI50 value for 18β-GA was recorded as 6.829 μM. This study throws light on the usefulness of 18β-GA and its esters for the treatment of Tropical Bovine Theileriosis.
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Affiliation(s)
- K Buvanesvaragurunathan
- PG and Research Department of Botany, Bharathi Women's College, Broadway Road, George Town, Chennai, Tamil Nadu, 600108, India
| | - J Ganesh
- Translational Research Platform for Veterinary Biologicals, Tamil Nadu Veterinary and Animal Sciences University, Chennai, Tamil Nadu, 600 051, India
| | - S Nagul Kumar
- PG and Research Department of Botany, Bharathi Women's College, Broadway Road, George Town, Chennai, Tamil Nadu, 600108, India
| | - V Porchezhiyan
- PG and Research Department of Botany, Bharathi Women's College, Broadway Road, George Town, Chennai, Tamil Nadu, 600108, India
| | - A Radha
- PG and Research Department of Botany, Bharathi Women's College, Broadway Road, George Town, Chennai, Tamil Nadu, 600108, India
| | - P Azhahianambi
- Translational Research Platform for Veterinary Biologicals, Tamil Nadu Veterinary and Animal Sciences University, Chennai, Tamil Nadu, 600 051, India.
| | - P Pandikumar
- Xavier Research Foundation, St Xavier's College, Palayamkottai, Tamil Nadu, 627 002, India.
| | - S Ignacimuthu
- Xavier Research Foundation, St Xavier's College, Palayamkottai, Tamil Nadu, 627 002, India.
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7
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de Alencar MVOB, Islam MT, dos Reis AC, de Oliveira Santos JV, Nunes AMV, da Silva FCC, da Conceição Machado K, de Castro e Sousa JM, Reiner Ž, Martorell M, Fagoonee S, Sharifi-Rad J, de Carvalho Melo-Cavalcante AA. Oxidative stress mediated cytogenotoxicological effects of phytol in wistar albino rats. ADVANCES IN TRADITIONAL MEDICINE 2022. [DOI: 10.1007/s13596-022-00628-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Zulhendri F, Chandrasekaran K, Kowacz M, Ravalia M, Kripal K, Fearnley J, Perera CO. Antiviral, Antibacterial, Antifungal, and Antiparasitic Properties of Propolis: A Review. Foods 2021; 10:1360. [PMID: 34208334 PMCID: PMC8231288 DOI: 10.3390/foods10061360] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/09/2021] [Accepted: 06/10/2021] [Indexed: 12/18/2022] Open
Abstract
Propolis is a complex phytocompound made from resinous and balsamic material harvested by bees from flowers, branches, pollen, and tree exudates. Humans have used propolis therapeutically for centuries. The aim of this article is to provide comprehensive review of the antiviral, antibacterial, antifungal, and antiparasitic properties of propolis. The mechanisms of action of propolis are discussed. There are two distinct impacts with regards to antimicrobial and anti-parasitic properties of propolis, on the pathogens and on the host. With regards to the pathogens, propolis acts by disrupting the ability of the pathogens to invade the host cells by forming a physical barrier and inhibiting enzymes and proteins needed for invasion into the host cells. Propolis also inhibits the replication process of the pathogens. Moreover, propolis inhibits the metabolic processes of the pathogens by disrupting cellular organelles and components responsible for energy production. With regard to the host, propolis functions as an immunomodulator. It upregulates the innate immunity and modulates the inflammatory signaling pathways. Propolis also helps maintain the host's cellular antioxidant status. More importantly, a small number of human clinical trials have demonstrated the efficacy and the safety of propolis as an adjuvant therapy for pathogenic infections.
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Affiliation(s)
| | | | - Magdalena Kowacz
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10 St., 10-748 Olsztyn, Poland; or
| | - Munir Ravalia
- The Royal London Hospital, Whitechapel Rd, Whitechapel, London E1 1FR, UK;
| | - Krishna Kripal
- Rajarajeswari Dental College & Hospital, No.14, Ramohalli Cross, Mysore Road, Kumbalgodu, Bengaluru 560074, Karnataka, India;
| | - James Fearnley
- Apiceutical Research Centre, Unit 3b Enterprise Way, Whitby, North Yorkshire YO18 7NA, UK;
| | - Conrad O. Perera
- Food Science Program, School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland CBD, Auckland 1010, New Zealand
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9
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Ghanbariasad A, Valizadeh A, Ghadimi SN, Fereidouni Z, Osanloo M. Nanoformulating Cinnamomum zeylanicum essential oil with an extreme effect on Leishmania tropica and Leishmania major. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102436] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Wahab Obeng A, Boakye YD, Agana TA, Djameh GI, Boamah D, Adu F. Anti-trypanosomal and anthelminthic properties of ethanol and aqueous extracts of Tetrapleura tetraptera Taub. Vet Parasitol 2021; 294:109449. [PMID: 33991727 DOI: 10.1016/j.vetpar.2021.109449] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 05/05/2021] [Accepted: 05/06/2021] [Indexed: 11/25/2022]
Abstract
Trypanosomosis and helminthosis, considered as part of neglected tropical diseases, are parasitic infections of public health importance, especially in Africa. Medicinal plants have been used in most parts of Africa, to treat these parasitic infections. The study aims to determine the anti-trypanosomal and anthelminthic properties of Tetrapleura tetraptera (fruit and stembark). The aqueous extracts of T. tetraptera fruit (TTFaq) and stembark (TTSaq), as well as ethanol extracts of T. tetraptera fruit (TTFe) and stembark (TTSe), were screened for their in vitro anti-trypanosomal and anthelminthic activities against T. b. brucei and Pheretima posthuma worms, respectively. Preliminary phytochemical screening of all extracts and gas chromatography-mass spectrometry (GC-MS) analysis of most active extracts were conducted. TTFaq exhibited anti-trypanosomal activity with IC50 of 18.18 μg/mL. TTSe and TTFe had moderate anti-trypanosomal activity with IC50 of 34.76 and 34.84 μg/mL, respectively. TTSaq had relatively low activity against the parasite with IC50 of 55.03 μg/mL. The SI of T. tetraptera extracts was between the range of 0.14-2.09. TTFaq showed dose-dependent activity causing paralysis and death of the adult worms at all concentrations. At the least concentration of 0.625 mg/mL, TTFaq induced paralysis and death after 101.88 ± 0.8 and 242.64 ± 0.38 min of exposure, respectively compared with the negative control (p < 0.0001). TTFe, TTSe and TTSaq caused paralysis of worms after 318.32 ± 0.74, 422.5 ± 0.72, 422.20 ± 0.55 min of exposure at minimum concentrations of 2.5, 10 and 5 mg/mL, respectively (p < 0.0001). However, no death was observed in worms treated with TTFe, TTSe and TTSaq at all test concentrations. In the presence of sub-minimal inhibitory concentration of the extracts, TTFaq potentiated the anthelminthic activity of albendazole whiles TTFe, TTSaq and TTSe inhibited the activity of albendazole. Phytochemical screening revealed the presence of saponins, triterpenoids, reducing sugars, flavonoids (absent in TTFe), steroids (absent in TTFaq) and tannins (absent in TTSe and TTFe) in the extracts. GC-MS revealed the presence of 9-octadecenamide and betulic acid in TTFaq. Hence, there was evidence provided here that Tetrapleura tetraptera may be effective. This gives credence to their folkloric use. However, further study might be necessary to ascertain safety use in both humans and animals.
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Affiliation(s)
- Ahmed Wahab Obeng
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Yaw Duah Boakye
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Theresa Appiah Agana
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Georgina Isabella Djameh
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, P.O. Box LG 581, Legon, Ghana
| | - Daniel Boamah
- Department of Microbiology, Mampong Centre for Plant Medicine Research, Akuapem Mampong, Ghana
| | - Francis Adu
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
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de Morais MC, de Souza JV, da Silva Maia Bezerra Filho C, Dolabella SS, de Sousa DP. Trypanocidal Essential Oils: A Review. Molecules 2020; 25:molecules25194568. [PMID: 33036315 PMCID: PMC7583723 DOI: 10.3390/molecules25194568] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 12/22/2022] Open
Abstract
Trypanosomiases are diseases caused by parasitic protozoan trypanosomes of the genus Trypanosoma. In humans, this includes Chagas disease and African trypanosomiasis. There are few therapeutic options, and there is low efficacy to clinical treatment. Therefore, the search for new drugs for the trypanosomiasis is urgent. This review describes studies of the trypanocidal properties of essential oils, an important group of natural products widely found in several tropical countries. Seventy-seven plants were selected from literature for the trypanocidal activity of their essential oils. The main chemical constituents and mechanisms of action are also discussed. In vitro and in vivo experimental data show the therapeutic potential of these natural products for the treatment of infections caused by species of Trypanosoma.
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Affiliation(s)
- Mayara Castro de Morais
- Laboratory of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences, Federal University of Paraíba, 58051-900 João Pessoa, Paraíba, Brazil; (M.C.d.M.); (J.V.d.S.); (C.d.S.M.B.F.)
| | - Jucieudo Virgulino de Souza
- Laboratory of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences, Federal University of Paraíba, 58051-900 João Pessoa, Paraíba, Brazil; (M.C.d.M.); (J.V.d.S.); (C.d.S.M.B.F.)
| | - Carlos da Silva Maia Bezerra Filho
- Laboratory of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences, Federal University of Paraíba, 58051-900 João Pessoa, Paraíba, Brazil; (M.C.d.M.); (J.V.d.S.); (C.d.S.M.B.F.)
| | - Silvio Santana Dolabella
- Laboratory of Entomology and Tropical Parasitology, Department of Morphology, Federal University of Sergipe, 49100-000 São Cristóvão, Sergipe, Brazil;
| | - Damião Pergentino de Sousa
- Laboratory of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences, Federal University of Paraíba, 58051-900 João Pessoa, Paraíba, Brazil; (M.C.d.M.); (J.V.d.S.); (C.d.S.M.B.F.)
- Correspondence: ; Tel.: +55-83-3216-7347
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12
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Novotna B, Polesny Z, Pinto-Basto MF, Van Damme P, Pudil P, Mazancova J, Duarte MC. Medicinal plants used by 'root doctors', local traditional healers in Bié province, Angola. JOURNAL OF ETHNOPHARMACOLOGY 2020; 260:112662. [PMID: 32147477 DOI: 10.1016/j.jep.2020.112662] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 02/06/2020] [Accepted: 02/06/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE This study is one of the first post-civil war efforts to document traditional botanical knowledge in Bié province, central Angola, in a first step to bring more studies on the use of medicinal plant resources in this area so as to bring new insights into Angolan bio-cultural diversity. AIM OF THE STUDY Examine the variety of plant species used for medical purposes, as well as characterize their social and cultural values. Also, it is aimed to compare their uses in the studied region with those in Sub-Saharan Africa and report new ethnomedicinal uses. MATERIALS AND METHODS We documented traditional medicinal plant knowledge among professional herbalists in two areas in Bié province through participatory observation, semi-structured interviews and transect walks. Ethnobotanical information was quantified based on Use Reports to (1) rate traditional knowledge; and (2) determine most useful taxa. RESULTS In total, 10 traditional healers shared information on their knowledge. A total of 87 plant species distributed among 57 genera and 36 botanical families were documented with Fabaceae being the best-represented family with 18 species, followed by Phyllanthaceae (6), Apocynaceae (5), Asteraceae (5), Rubiaceae (5), Lamiaceae (4), and Ochnaceae (3). Most medicinal plants are usually gathered at a distance from human settlements because of the belief in the higher efficacy of 'wild' plants shared by all herbalists. Roots are the most common plant part used (79%), explaining why the consulted herbalists call themselves 'root doctors'. CONCLUSIONS The culturally most important medicinal species identified in this study, i.e. Securidaca longepedunculata, Garcinia huillensis, Annona stenophylla, Afzelia quanzensis and Strychnos cocculoides, were previously reported for the same use in neighbouring countries and elsewhere in Africa. Our study also indicates that there are several locally valuable species that have not yet been studied for their medical potential, to name a few: Alvesia rosmarinifolia, Diplorhynchus condylocarpon, Eriosema affine, Paropsia brazzaeana, Rhus squalida, Sclerocroton cornutus or Xylopia tomentosa. Moreover, the ethnomedicinal use of 26 species was reported for the first time to sub-Saharan Africa. CLASSIFICATION Ethnopharmacological field studies.
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Affiliation(s)
- Barbora Novotna
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha - Suchdol, Czech Republic; Department of General Anthropology, Faculty of Humanities, Charles University, U Kříže 8, 158 00, Praha 5, Jinonice, Czech Republic.
| | - Zbynek Polesny
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha - Suchdol, Czech Republic.
| | | | - Patrick Van Damme
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha - Suchdol, Czech Republic; Laboratory of Tropical and Subtropical Agronomy and Ethnobotany, Ghent University, Coupure Links 653, 9000, Ghent, Belgium.
| | - Petr Pudil
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha - Suchdol, Czech Republic.
| | - Jana Mazancova
- Department of Sustainable Technologies, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha - Suchdol, Czech Republic.
| | - Maria Cristina Duarte
- CE3C - Center for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal.
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Ghodsi R, Nosrati R. Effects of Minor Compounds of Edible Oils on Human Health. CURRENT NUTRITION & FOOD SCIENCE 2020. [DOI: 10.2174/1573401316666200203121034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Oils and fats are the densest sources of food energy among food groups.
Vegetable oils are constituted predominantly of triglycerides. Due to the importance of edible oils in
nutrition, food industry and human health, great attention has been paid to them in recent years.
Some minor bioactive constituents in oils include phospholipids, tocols, sterols, carotenoid, chlorophyll,
phenols, phylokynon and terpenes.
Objective:
The aim of the present study was to examine beneficial effects of minor compounds in edible oils on human health.
Results: Minor compounds of edible oils that we use daily can produce remarkable results in the prevention and treatment of various diseases like diabetes, inflammation, hypertension, cancer, allergy and central nervous system disorders due to their antimicrobial, anti-cancer, anti-viral, anti-oxidative, anti-inflammation, anti-mutagenic, hypolipidemic, and hypoglycemic properties, among others.
Conclusion:
The results of this study showed that the presence of beneficial minor compounds in oils could have significant impact on the prevention and treatment of various diseases. Therefore, the type of consumed oil can play an important role in human health.
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Affiliation(s)
- Ramin Ghodsi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Rahmat Nosrati
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
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Saad SB, Ibrahim MA, Jatau ID, Shuaibu MN. The therapeutic potential of phytol towards Trypanosoma congolense infection and the inhibitory effects against trypanosomal sialidase. Exp Parasitol 2020; 216:107943. [PMID: 32598890 DOI: 10.1016/j.exppara.2020.107943] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 06/04/2020] [Accepted: 06/19/2020] [Indexed: 11/30/2022]
Abstract
The search for novel therapeutic candidates against animal trypanosomiasis is an ongoing scientific endevour because of the negative impacts of the disease to the African livestock industry. In this study, the in vivo therapeutic potentials of phytol toward Trypanosoma congolense infection and the inhibitory effects on trypanosomal sialidase were investigated. Rats were infected with T. congolense and administered daily oral treatment of 50 and 100 mg/kg BW of phytol. Within the first 10 days of the treatment, no antitrypanosomal activity was recorded but a moderate trypanostatic activity was observed from day 17-day 21 pi. However, at 100 mg/kg BW, phytol demonstrated a significant (p < 0.05) ameliorative potentials toward T. congolense-induced host-associated pathological damages such as anaemia, hepatic and renal damages; and the data was comparable to diminazine aceturate. Moreover, the T. congolense caused a significant (p < 0.05) increase in free serum sialic acid level which was significantly (p < 0.05) prevented in the presence of phytol (100 mg/kg BW). In an in vitro analysis, phytol inhibited partially purified T. congolense sialidase using an uncompetitive inhibition pattern with inhibition binding constant of 261.24 μmol/mL. Subsequently, molecular docking revealed that the compound binds to homology modelled trypanosomal sialidase with a binding free energy of -6.7 kcal/mol which was mediated via a single hydrogen bond while Trp324 and Pro274 were the critical binding residues. We concluded that phytol has moderate trypanostatic activity but with a great potential in mitigating the host-associated cellular damages while the anaemia amelioration was mediated, in part, through the inhibition of sialidase.
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Affiliation(s)
- Saad Bello Saad
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria; Department of Biochemistry, Yusuf Maitama Sule University, Kano, Nigeria
| | | | - Isa Danladi Jatau
- Department of Veterinary Parasitology and Entomology, Ahmadu Bello University, Zaria, Nigeria
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Phytochemical Constituents, Antioxidant, Cytotoxicity, Antimicrobial, Antitrypanosomal, and Antimalarial Potentials of the Crude Extracts of Callistemon citrinus. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:5410923. [PMID: 31558912 PMCID: PMC6735214 DOI: 10.1155/2019/5410923] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 07/28/2019] [Indexed: 12/17/2022]
Abstract
Plants are reservoir for potentially useful bioactive compounds, and owing to the rising occurrences of drug resistance to malaria parasites, there is a need to discover and develop new phytochemicals in plant that can be used as antimalarial agents. In this study, we gave a detailed description of the phytochemicals present in both ethyl acetate and methanolic extracts of Callistemon citrinus (C. citrinus) using Gas Chromatography-Mass Spectrometry (GC-MS) analysis; both extracts were also evaluated for their in vitro antimalarial, antitrypanosomal, and cytotoxicity activities against Trypanosoma brucei brucei (T. b brucei) parasites, Plasmodium falciparum (P. falciparum) malaria parasites 3D7 strain, and human cervix adenocarcinoma cells (HeLa cells); in addition, the antimicrobial and antioxidant efficacies were determined using standard methods. Both extracts were characterized by a high amount of fatty acids (52.88 and 62.48%). The ethyl acetate extract exhibited a greater activity with minimum inhibitory concentration (MIC) values ranging from 0.025 to 0.10 mg/mL while the methanol extract ranged from 0.025 to 0.15 mg/mL. Both extracts were bactericidal to Escherichia coli ATCC 35150 (E. coli) and Pseudomonas aeruginosa ACC (P. aeruginosa). Qualitative and quantitative phytochemical screenings conducted for both extracts revealed the presence of alkaloids, glycosides, saponins, steroids, and triterpenoids, fat and oils, flavonoids, phenols, and tannins in varying amounts. Both crude extracts exhibited antitrypanosomal potentials with an IC50 of 6.6/9.7 μg/mL and antiplasmodial activities with an IC50 of 8.4/13.0 μg/mL. Conclusion from this study indicates that apart from the folkloric uses of this plant in traditional settings, the extracts possess a broad spectrum of antimicrobial, antitrypanosomal, and antimalarial activities and some pharmaceutically essential bioactive components with remarkable antioxidant capacities that may be used in the synthesis of novel drugs for the management of different varieties of ailments.
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Saad SB, Ibrahim MA, Jatau ID, Shuaibu MN. Trypanostatic activity of geranylacetone: Mitigation of Trypanosoma congolense-associated pathological pertubations and insight into the mechanism of anaemia amelioration using in vitro and in silico models. Exp Parasitol 2019; 201:49-56. [PMID: 31029700 DOI: 10.1016/j.exppara.2019.04.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 04/16/2019] [Accepted: 04/24/2019] [Indexed: 02/08/2023]
Abstract
Trypanosoma congolense is an important pathogen that wreaks havoc in the livestock industry of the African continent. This study evaluated the in vivo antitrypanosomal activity of geranylacetone and its ameliorative effect on the disease-induced anaemia and organ damages as well as its inhibitory effects against trypanosomal sialidase using in vitro and in silico techniques. Geranylacetone was used to treat T. congolense infected rats, at a dose of 50 and 100 mg/kg BW, for 14 days where it was found to reduce the parasite burden in the infected animals. Moreover, 100 mg/kg BW of geranylacetone significantly (p < 0.05) ameliorated the anaemia, hepatic and renal damages caused by the parasite. This is in addition to the alleviation of the parasite-induced hepatosplenomegaly and upsurge in free serum sialic acid levels in the infected animals which were associated with the observed anaemia amelioration by the compound. Consequently, bloodstream T. congolense sialidase was partially purified on DEAE cellulose column and inhibition kinetic studies revealed that the enzyme was inhibited by geranylacetone via an uncompetitive inhibition pattern. In silico analysis using molecular docking with Autodock Vina indicated that geranylacetone binds to trypanosomal sialidase with a minimum free binding energy of -5.8 kcal/mol which was mediated by 26 different kinds of non-covalent interactions excluding hydrogen bond whilst Asp163 and Phe421 had the highest number of the interactions. The data suggests that geranylacetone has trypanostatic activity and could protect animals against the T. congolense-induced anaemia through the inhibition of sialidase and/or the protection of the parasite-induced hepatosplenomegaly.
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Affiliation(s)
- Saad Bello Saad
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria; Department of Biochemistry, Yusuf Maitama Sule University, Kano, Nigeria
| | | | - Isa Danladi Jatau
- Department of Veterinary Parasitology and Entomology, Ahmadu Bello University, Zaria, Nigeria
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Freire RT, Bero J, Beaufay C, Selegato DM, Coqueiro A, Choi YH, Quetin-Leclercq J. Identification of antiplasmodial triterpenes from Keetia species using NMR-based metabolic profiling. Metabolomics 2019; 15:27. [PMID: 30830464 PMCID: PMC6394458 DOI: 10.1007/s11306-019-1487-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 02/04/2019] [Indexed: 01/10/2023]
Abstract
INTRODUCTION The increase in multidrug resistance and lack of efficacy in malaria therapy has propelled the urgent discovery of new antiplasmodial drugs, reviving the screening of secondary metabolites from traditional medicine. In plant metabolomics, NMR-based strategies are considered a golden method providing both a holistic view of the chemical profiles and a correlation between the metabolome and bioactivity, becoming a corner stone of drug development from natural products. OBJECTIVE Create a multivariate model to identify antiplasmodial metabolites from 1H NMR data of two African medicinal plants, Keetia leucantha and K. venosa. METHODS The extracts of twigs and leaves of Keetia species were measured by 1H NMR and the spectra were submitted to orthogonal partial least squares (OPLS) for antiplasmodial correlation. RESULTS Unsupervised 1H NMR analysis showed that the effect of tissues was higher than species and that triterpenoids signals were more associated to Keetia twigs than leaves. OPLS-DA based on Keetia species correlated triterpene signals to K. leucantha, exhibiting a higher concentration of triterpenoids and phenylpropanoid-conjugated triterpenes than K. venosa. In vitro antiplasmodial correlation by OPLS, validated for all Keetia samples, revealed that phenylpropanoid-conjugated triterpenes were highly correlated to the bioactivity, while the acyclic squalene was found as the major metabolite in low bioactivity samples. CONCLUSION NMR-based metabolomics combined with supervised multivariate data analysis is a powerful strategy for the identification of bioactive metabolites in plant extracts. Moreover, combination of statistical total correlation spectroscopy with 2D NMR allowed a detailed analysis of different triterpenes, overcoming the challenge posed by their structure similarity and coalescence in the aliphatic region.
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Affiliation(s)
- Rafael Teixeira Freire
- Natural Products Laboratory, Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE, Leiden, The Netherlands
| | - Joanne Bero
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université catholique de Louvain, UCLouvain, Avenue E. Mounier, 72, B1.72.03, B- 1200, Brussels, Belgium
| | - Claire Beaufay
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université catholique de Louvain, UCLouvain, Avenue E. Mounier, 72, B1.72.03, B- 1200, Brussels, Belgium
| | - Denise Medeiros Selegato
- Natural Products Laboratory, Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE, Leiden, The Netherlands
| | - Aline Coqueiro
- Natural Products Laboratory, Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE, Leiden, The Netherlands
| | - Young Hae Choi
- Natural Products Laboratory, Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE, Leiden, The Netherlands.
- College of Pharmacy, Kyung Hee University, Seoul, 02447, Republic of Korea.
| | - Joëlle Quetin-Leclercq
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université catholique de Louvain, UCLouvain, Avenue E. Mounier, 72, B1.72.03, B- 1200, Brussels, Belgium.
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Active Essential Oils and Their Components in Use against Neglected Diseases and Arboviruses. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:6587150. [PMID: 30881596 PMCID: PMC6387720 DOI: 10.1155/2019/6587150] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 11/06/2018] [Indexed: 12/21/2022]
Abstract
The term neglected diseases refers to a group of infections caused by various classes of pathogens, including protozoa, viruses, bacteria, and helminths, most often affecting impoverished populations without adequate sanitation living in close contact with infectious vectors and domestic animals. The fact that these diseases were historically not considered priorities for pharmaceutical companies made the available treatments options obsolete, precarious, outdated, and in some cases nonexistent. The use of plants for medicinal, religious, and cosmetic purposes has a history dating back to the emergence of humanity. One of the principal fractions of chemical substances found in plants are essential oils (EOs). EOs consist of a mixture of volatile and hydrophobic secondary metabolites with marked odors, composed primarily of terpenes and phenylpropanoids. They have great commercial value and were widely used in traditional medicine, by phytotherapy practitioners, and in public health services for the treatment of several conditions, including neglected diseases. In addition to the recognized cytoprotective and antioxidative activities of many of these compounds, larvicidal, insecticidal, and antiparasitic activities have been associated with the induction of oxidative stress in parasites, increasing levels of nitric oxide in the infected host, reducing parasite resistance to reactive oxygen species, and increasing lipid peroxidation, ultimately leading to serious damage to cell membranes. The hydrophobicity of these compounds also allows them to cross the membranes of parasites as well as the blood-brain barrier, collaborating in combat at the second stage of several of these infections. Based on these considerations, the aim of this review was to present an update of the potential of EOs, their fractions, and their chemical constituents, against some neglected diseases, including American and African trypanosomiasis, leishmaniasis, and arboviruses, specially dengue.
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Identification and characterization of glyceraldehyde 3-phosphate dehydrogenase from Fasciola gigantica. Parasitol Res 2019; 118:861-872. [DOI: 10.1007/s00436-019-06225-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 01/17/2019] [Indexed: 12/11/2022]
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Larayetan R, Ojemaye MO, Okoh OO, Okoh AI. Silver nanoparticles mediated by Callistemon citrinus extracts and their antimalaria, antitrypanosoma and antibacterial efficacy. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.10.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Simoben CV, Ntie-Kang F, Akone SH, Sippl W. Compounds from African Medicinal Plants with Activities Against Selected Parasitic Diseases: Schistosomiasis, Trypanosomiasis and Leishmaniasis. NATURAL PRODUCTS AND BIOPROSPECTING 2018; 8:151-169. [PMID: 29744736 PMCID: PMC5971035 DOI: 10.1007/s13659-018-0165-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 04/26/2018] [Indexed: 05/10/2023]
Abstract
Parasitic diseases continue to represent a threat on a global scale, particularly among the poorest countries in the world. This is particularly because of the absence of vaccines, and in some cases, resistance against available drugs, currently being used for their treatment. In this review emphasis is laid on natural products and scaffolds from African medicinal plants (AMPs) for lead drug discovery and possible further development of drugs for the treatment of parasitic diseases. In the discussion, emphasis has been laid on alkaloids, terpenoids, quinones, flavonoids and narrower compound classes of compounds with micromolar range activities against Schistosoma, Trypanosoma and Leishmania species. In each subparagraph, emphasis is laid on the compound subclasses with most promising in vitro and/or in vivo activities of plant extracts and isolated compounds. Suggestions for future drug development from African medicinal plants have also been provided. This review covering 167 references, including 82 compounds, provides information published within two decades (1997-2017).
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Affiliation(s)
- Conrad V Simoben
- Institute of Pharmacy, Martin-Luther University of Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120, Halle (Saale), Germany
| | - Fidele Ntie-Kang
- Institute of Pharmacy, Martin-Luther University of Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120, Halle (Saale), Germany.
- Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea, 00237, Cameroon.
| | - Sergi H Akone
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University, Universitaetsstrasse1, Geb. 26.23, Duesseldorf, 40225, Germany
- Department of Chemistry, Faculty of Science, University of Douala, PO Box 24157, Douala, 00237, Cameroon
| | - Wolfgang Sippl
- Institute of Pharmacy, Martin-Luther University of Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120, Halle (Saale), Germany
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Costa S, Cavadas C, Cavaleiro C, Salgueiro L, do Céu Sousa M. In vitro susceptibility of Trypanosoma brucei brucei to selected essential oils and their major components. Exp Parasitol 2018; 190:34-40. [PMID: 29778466 DOI: 10.1016/j.exppara.2018.05.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 02/16/2018] [Accepted: 05/16/2018] [Indexed: 10/16/2022]
Abstract
Aiming for discovering effective and harmless antitrypanosomal agents, 17 essential oils and nine major components were screened for their effects on T. b. brucei. The essential oils were obtained by hydrodistillation from fresh plant material and analyzed by GC and GC-MS. The trypanocidal activity was assessed using blood stream trypomastigotes cultures of T. b. brucei and the colorimetric resazurin method. The MTT test was used to assess the cytotoxicity of essential oils on macrophage cells and Selectivity Indexes were calculated. Of the 17 essential oils screened three showed high trypanocidal activity (IC50 < 10 μg/mL): Juniperus oxycedrus (IC50 of 0.9 μg/mL), Cymbopogon citratus (IC50 of 3.2 μg/mL) and Lavandula luisieri (IC50 of 5.7 μg/mL). These oils had no cytotoxic effects on macrophage cells showing the highest values of Selectivity Index (63.4, 9.0 and 11.8, respectively). The oils of Distichoselinum tenuifolium, Lavandula viridis, Origanum virens, Seseli tortuosom, Syzygium aromaticum, and Thymbra capitata also exhibited activity (IC50 of 10-25 μg/mL) but showed cytotoxicity on macrophages. Of the nine compounds tested, α-pinene (IC50 of 2.9 μg/mL) and citral (IC50 of 18.9 μg/mL) exhibited the highest anti-trypanosomal activities. Citral is likely the active component of C. citratus and α-pinene is responsible for the antitrypanosomal effects of J. oxycedrus. The present work leads us to propose the J. oxycedrus, C. citratus and L. luisieri oils as valuable sources of new molecules for African Sleeping Sickness treatment.
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Affiliation(s)
- Sonya Costa
- Programme in Experimental Biology and Biomedicine, Centre for Neurosciences and Cell Biology, University of Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, Portugal; CNC-Center for Neurosciences and Cell Biology, University of Coimbra, Portugal.
| | - Cláudia Cavadas
- CNC-Center for Neurosciences and Cell Biology, University of Coimbra, Portugal; Faculty of Pharmacy, University of Coimbra, Portugal.
| | - Carlos Cavaleiro
- CNC-Center for Neurosciences and Cell Biology, University of Coimbra, Portugal; Faculty of Pharmacy, University of Coimbra, Portugal.
| | - Lígia Salgueiro
- CNC-Center for Neurosciences and Cell Biology, University of Coimbra, Portugal; Faculty of Pharmacy, University of Coimbra, Portugal.
| | - Maria do Céu Sousa
- CNC-Center for Neurosciences and Cell Biology, University of Coimbra, Portugal; Faculty of Pharmacy, University of Coimbra, Portugal.
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Beaufay C, Hérent MF, Quetin-Leclercq J, Bero J. In vivo anti-malarial activity and toxicity studies of triterpenic esters isolated form Keetia leucantha and crude extracts. Malar J 2017; 16:406. [PMID: 29017554 PMCID: PMC5635585 DOI: 10.1186/s12936-017-2054-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 10/05/2017] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Considering the need for new anti-malarial drugs, further investigations on Keetia leucantha (Rubiaceae), an in vitro antiplasmodial plant traditionally used to treat malaria, were carried out. This paper aimed to assess the in vivo anti-malarial efficacy of K. leucantha triterpenic esters previously identified as the most in vitro active components against Plasmodium falciparum and their potential toxicity as well as those of anti-malarial extracts. RESULTS These eight triterpenic esters and the major antiplasmodial triterpenic acids, ursolic and oleanolic acids, were quantified in the twigs dichloromethane extract by validated HPLC-UV methods. They account for about 19% of this extract (16.9% for acids and 1.8% for esters). These compounds were also identified in trace in the twigs decoction by HPLC-HRMS. Results also showed that extracts and esters did not produce any haemolysis, and were devoid of any acute toxicity at a total cumulative dose of 800 and 150 mg/kg respectively. Moreover, esters given intraperitoneally at 50 mg/kg/day to Plasmodium berghei-infected mice showed a very significant (p < 0.01) parasitaemia inhibition (27.8 ± 5.4%) on day 4 post-infection compared to vehicle-treated mice. CONCLUSIONS These results bring out new information on the safety of K. leucantha use and on the identification of anti-malarial compounds from its dichloromethane extract. Its activity can be explained by the presence of triterpenic acids and esters which in vivo activity and safety were demonstrated for the first time.
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Affiliation(s)
- Claire Beaufay
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université Catholique de Louvain, Avenue E. Mounier 72, B1.72.03, 1200 Brussels, Belgium
| | - Marie-France Hérent
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université Catholique de Louvain, Avenue E. Mounier 72, B1.72.03, 1200 Brussels, Belgium
| | - Joëlle Quetin-Leclercq
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université Catholique de Louvain, Avenue E. Mounier 72, B1.72.03, 1200 Brussels, Belgium
| | - Joanne Bero
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université Catholique de Louvain, Avenue E. Mounier 72, B1.72.03, 1200 Brussels, Belgium
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Cargnin ST, Gnoatto SB. Ursolic acid from apple pomace and traditional plants: A valuable triterpenoid with functional properties. Food Chem 2017; 220:477-489. [PMID: 27855928 DOI: 10.1016/j.foodchem.2016.10.029] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 10/05/2016] [Accepted: 10/06/2016] [Indexed: 12/20/2022]
Abstract
Apple juice production generates a large amount of residue comprising mainly peels, seeds, and pulp, known as apple pomace. In the global context, Brazil ranks 11th in apple production and thousands of tons of apple pomace are produced every year. This by-product is little explored, since it is a rich and heterogeneous mixture, containing interesting phytochemical groups. Among them, ursolic acid (UA) has attracted attention because of its therapeutic potential. UA is a pentacyclic triterpene found too in several traditional plants, and has shown several functional properties such as antibacterial, antiprotozoal, anti-inflammatory and antitumor. Therefore, this review attempts to shed some light on the economical viability of apple and apple pomace as sources of bioactive compounds, highlighting the UA extraction, and its main functional properties published in the last 5years (2010-2015).
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Affiliation(s)
- Simone Tasca Cargnin
- Phytochemistry and Organic Synthesis Laboratory, School of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
| | - Simone Baggio Gnoatto
- Phytochemistry and Organic Synthesis Laboratory, School of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
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25
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Petrelli R, Ranjbarian F, Dall'Acqua S, Papa F, Iannarelli R, Ngahang Kamte SL, Vittori S, Benelli G, Maggi F, Hofer A, Cappellacci L. An overlooked horticultural crop, Smyrnium olusatrum, as a potential source of compounds effective against African trypanosomiasis. Parasitol Int 2017; 66:146-151. [PMID: 28087440 DOI: 10.1016/j.parint.2017.01.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 11/17/2016] [Accepted: 01/04/2017] [Indexed: 02/08/2023]
Abstract
Among natural products, sesquiterpenes have shown promising inhibitory effects against bloodstream forms of Trypanosoma brucei, the protozoan parasite causing human African trypanosomiasis (HAT). Smyrnium olusatrum (Apiaceae), also known as Alexanders or wild celery, is a neglected horticultural crop characterized by oxygenated sesquiterpenes containing a furan ring. In the present work we explored the potential of its essential oils obtained from different organs and the main oxygenated sesquiterpenes, namely isofuranodiene, germacrone and β-acetoxyfuranoeudesm-4(15)-ene, as inhibitors of Trypanosoma brucei. All essential oils effectively inhibited the growth of parasite showing IC50 values of 1.9-4.0μg/ml. Among the main essential oil constituents, isofuranodiene exhibited a significant and selective inhibitory activity against T. brucei (IC50 of 0.6μg/ml, SI=30), with β-acetoxyfuranoeudesm-4(15)-ene giving a moderate potentiating effect. These results shed light on the possible application of isofuranodiene as an antiprotozoal agent to be included in combination treatments aimed not only at curing patients but also at preventing the diffusion of HAT.
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Affiliation(s)
| | - Farahnaz Ranjbarian
- Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| | - Stefano Dall'Acqua
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Fabrizio Papa
- School of Science and Technology, University of Camerino, Camerino, Italy
| | | | | | - Sauro Vittori
- School of Pharmacy, University of Camerino, Camerino, Italy
| | - Giovanni Benelli
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Filippo Maggi
- School of Pharmacy, University of Camerino, Camerino, Italy.
| | - Anders Hofer
- Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
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Bumble bee parasite strains vary in resistance to phytochemicals. Sci Rep 2016; 6:37087. [PMID: 27883009 PMCID: PMC5121629 DOI: 10.1038/srep37087] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 10/14/2016] [Indexed: 12/05/2022] Open
Abstract
Nectar and pollen contain diverse phytochemicals that can reduce disease in pollinators. However, prior studies showed variable effects of nectar chemicals on infection, which could reflect variable phytochemical resistance among parasite strains. Inter-strain variation in resistance could influence evolutionary interactions between plants, pollinators, and pollinator disease, but testing direct effects of phytochemicals on parasites requires elimination of variation between bees. Using cell cultures of the bumble bee parasite Crithidia bombi, we determined (1) growth-inhibiting effects of nine floral phytochemicals and (2) variation in phytochemical resistance among four parasite strains. C. bombi growth was unaffected by naturally occurring concentrations of the known antitrypanosomal phenolics gallic acid, caffeic acid, and chlorogenic acid. However, C. bombi growth was inhibited by anabasine, eugenol, and thymol. Strains varied >3-fold in phytochemical resistance, suggesting that selection for phytochemical resistance could drive parasite evolution. Inhibitory concentrations of thymol (4.53–22.2 ppm) were similar to concentrations in Thymus vulgaris nectar (mean 5.2 ppm). Exposure of C. bombi to naturally occurring levels of phytochemicals—either within bees or during parasite transmission via flowers—could influence infection in nature. Flowers that produce antiparasitic phytochemicals, including thymol, could potentially reduce infection in Bombus populations, thereby counteracting a possible contributor to pollinator decline.
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27
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Bruno S, Margiotta M, Pinto A, Cullia G, Conti P, De Micheli C, Mozzarelli A. Selectivity of 3-bromo-isoxazoline inhibitors between human and Plasmodium falciparum glyceraldehyde-3-phosphate dehydrogenases. Bioorg Med Chem 2016; 24:2654-9. [DOI: 10.1016/j.bmc.2016.04.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 04/14/2016] [Accepted: 04/16/2016] [Indexed: 01/09/2023]
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28
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Phytol in a pharma-medico-stance. Chem Biol Interact 2015; 240:60-73. [DOI: 10.1016/j.cbi.2015.07.010] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 07/01/2015] [Accepted: 07/24/2015] [Indexed: 01/02/2023]
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Herrmann FC, Lenz M, Jose J, Kaiser M, Brun R, Schmidt TJ. In Silico Identification and in Vitro Activity of Novel Natural Inhibitors of Trypanosoma brucei Glyceraldehyde-3-phosphate-dehydrogenase. Molecules 2015; 20:16154-69. [PMID: 26404225 PMCID: PMC6332274 DOI: 10.3390/molecules200916154] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/19/2015] [Accepted: 08/27/2015] [Indexed: 11/16/2022] Open
Abstract
As part of our ongoing efforts to identify natural products with activity against pathogens causing neglected tropical diseases, we are currently performing an extensive screening of natural product (NP) databases against a multitude of protozoan parasite proteins. Within this project, we screened a database of NPs from a commercial supplier, AnalytiCon Discovery (Potsdam, Germany), against Trypanosoma brucei glyceraldehyde-3-phosphate dehydrogenase (TbGAPDH), a glycolytic enzyme whose inhibition deprives the parasite of energy supply. NPs acting as potential inhibitors of the mentioned enzyme were identified using a pharmacophore-based virtual screening and subsequent docking of the identified hits into the active site of interest. In a set of 700 structures chosen for the screening, 13 (1.9%) were predicted to possess significant affinity towards the enzyme and were therefore tested in an in vitro enzyme assay using recombinant TbGAPDH. Nine of these in silico hits (69%) showed significant inhibitory activity at 50 µM, of which two geranylated benzophenone derivatives proved to be particularly active with IC50 values below 10 µM. These compounds also showed moderate in vitro activity against T. brucei rhodesiense and may thus represent interesting starting points for further optimization.
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Affiliation(s)
- Fabian C Herrmann
- Institut für Pharmazeutische Biologie und Phytochemie (IPBP), University of Münster, PharmaCampus, Correnstraße 48, Münster D-48149, Germany.
| | - Mairin Lenz
- Institut für Pharmazeutische Biologie und Phytochemie (IPBP), University of Münster, PharmaCampus, Correnstraße 48, Münster D-48149, Germany.
| | - Joachim Jose
- Institut für Pharmazeutische und Medizinische Chemie, University of Münster, PharmaCampus, Correnstraße 48, Münster D-48149, Germany.
| | - Marcel Kaiser
- Swiss Tropical and Public Health Institute (Swiss TPH), Socinstraße 57, Basel CH-4002, Switzerland.
- University of Basel, Petersplatz 1, Basel CH-4003, Switzerland.
| | - Reto Brun
- Swiss Tropical and Public Health Institute (Swiss TPH), Socinstraße 57, Basel CH-4002, Switzerland.
- University of Basel, Petersplatz 1, Basel CH-4003, Switzerland.
| | - Thomas J Schmidt
- Institut für Pharmazeutische Biologie und Phytochemie (IPBP), University of Münster, PharmaCampus, Correnstraße 48, Münster D-48149, Germany.
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30
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Nwodo NJ, Ibezim A, Ntie-Kang F, Adikwu MU, Mbah CJ. Anti-trypanosomal activity of nigerian plants and their constituents. Molecules 2015; 20:7750-71. [PMID: 25927903 PMCID: PMC6272792 DOI: 10.3390/molecules20057750] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 04/17/2015] [Accepted: 04/22/2015] [Indexed: 12/27/2022] Open
Abstract
African trypanosomiasis is a vector-borne parasitic disease causing serious risks to the lives of about 60 million people and 48 million cattle globally. Nigerian medicinal plants are known to contain a large variety of chemical structures and some of the plant extracts have been screened for antitrypanosomal activity, in the search for potential new drugs against the illness. We surveyed the literatures on plants and plant-derived products with antitrypanosomal activity from Nigerian flora published from 1990 to 2014. About 90 plants were identified, with 54 compounds as potential active agents and presented by plant families in alphabetical order. This review indicates that the Nigerian flora may be suitable as a starting point in searching for new and more efficient trypanocidal molecules.
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Affiliation(s)
- Ngozi Justina Nwodo
- Department of Pharmaceutical and Medicinal Chemistry, University of Nigeria, Nsukka 410001, Nigeria.
| | - Akachukwu Ibezim
- Department of Pharmaceutical and Medicinal Chemistry, University of Nigeria, Nsukka 410001, Nigeria.
| | - Fidele Ntie-Kang
- Department of Chemistry, Chemical and Bioactivity Information Centre, Faculty of Science, University of Buea, P.O. Box 63, Buea 00237, Cameroon.
| | | | - Chika John Mbah
- Department of Pharmaceutical and Medicinal Chemistry, University of Nigeria, Nsukka 410001, Nigeria.
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31
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Bonikowski R, Świtakowska P, Kula J. Synthesis, odour evaluation and antimicrobial activity of some geranyl acetone and nerolidol analogues. FLAVOUR FRAG J 2015. [DOI: 10.1002/ffj.3238] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Radosław Bonikowski
- Łódź University of Technology; Faculty of Biotechnology and Food Sciences, Institute of General Food Chemistry; Stefanowskiego Street 4/10 90-924 Łódź Poland
| | - Paulina Świtakowska
- Łódź University of Technology; Faculty of Biotechnology and Food Sciences, Institute of General Food Chemistry; Stefanowskiego Street 4/10 90-924 Łódź Poland
| | - Józef Kula
- Łódź University of Technology; Faculty of Biotechnology and Food Sciences, Institute of General Food Chemistry; Stefanowskiego Street 4/10 90-924 Łódź Poland
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32
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Hiben MG, Sibhat GG, Fanta BS, Gebrezgi HD, Tesema SB. Evaluation of Senna singueana leaf extract as an alternative or adjuvant therapy for malaria. J Tradit Complement Med 2015; 6:112-7. [PMID: 26870688 PMCID: PMC4737944 DOI: 10.1016/j.jtcme.2014.11.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 07/01/2014] [Accepted: 08/13/2014] [Indexed: 11/18/2022] Open
Abstract
The emergence of malarial resistance to most antimalarial drugs is the main factor driving the continued effort to identify/discover new agents for combating the disease. Moreover, the unacceptably high mortality rate in severe malaria has led to the consideration of adjuvant therapies. Senna singueana leaves are traditionally used against malaria and fever. Extracts from the leaves of this plant demonstrated in vitro and in vivo antioxidant activities, which in turn could reduce the severity of malaria. Extracts from the root bark of this plant exhibited antiplasmodial activity; however, the leaves are the more sustainable resource. Thus, S. singueana leaf was selected for in vivo evaluation as a potential alternative or adjuvant therapy for malaria. Using malaria [Plasmodium berghei ANKA, chloroquine (CQ) sensitive]-infected Swiss albino mice of both sexes, 70% ethanol extract of S. singueana leaves (alone and in combination with CQ) was tested for antimalarial activity and adjuvancy potential. The 4-day suppressive test was used to evaluate antimalarial activity. The dose of S. singueana extract administered was safe to mice and exhibited some parasite suppression effect: extract doses of 200 mg/kg/d, 400 mg/kg/d, and 800 mg/kg/d caused 34.54%, 44.52%, and 47.32% parasite suppression, respectively. Concurrent administration of the extract with CQ phosphate at varied dose levels indicated that the percentage of parasite suppression of this combination was higher than administering CQ alone, but less than the sum of the effects of the extract and CQ acting separately. In conclusion, the study indicated that 70% ethanol extract of S. singueana leaf was safe to mice and possessed some parasite suppression effect. Coadministration of the extract with CQ appeared to boost the overall antimalarial effect, indicating that the combination may have a net health benefit if used as an adjuvant therapy.
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Affiliation(s)
| | | | - Biruk Sintayehu Fanta
- Department of Pharmacy, College of Health Sciences, Mekelle University, Mekelle, Ethiopia
| | - Haile Desta Gebrezgi
- Department of Parasitology, College of Health Sciences, Mekelle University, Mekelle, Ethiopia
| | - Shewaye Belay Tesema
- Department of Parasitology, College of Health Sciences, Mekelle University, Mekelle, Ethiopia
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33
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Bruno S, Pinto A, Paredi G, Tamborini L, De Micheli C, La Pietra V, Marinelli L, Novellino E, Conti P, Mozzarelli A. Discovery of Covalent Inhibitors of Glyceraldehyde-3-phosphate Dehydrogenase, A Target for the Treatment of Malaria. J Med Chem 2014; 57:7465-71. [DOI: 10.1021/jm500747h] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Stefano Bruno
- Dipartimento
di Farmacia and Centro Siteia.Parma, Università di Parma, Parco Area
delle Scienze 23/A, 43124 Parma, Italy
- Istituto di Bioscienze e Biorisorse, CNR, 80131 Napoli, Italy
| | - Andrea Pinto
- Dipartimento
di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milano, Italy
| | - Gianluca Paredi
- Dipartimento
di Farmacia and Centro Siteia.Parma, Università di Parma, Parco Area
delle Scienze 23/A, 43124 Parma, Italy
| | - Lucia Tamborini
- Dipartimento
di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milano, Italy
| | - Carlo De Micheli
- Dipartimento
di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milano, Italy
| | - Valeria La Pietra
- Dipartimento
di Farmacia, Università di Napoli Federico II, Via Montesano,
49, 80138 Napoli, Italy
| | - Luciana Marinelli
- Dipartimento
di Farmacia, Università di Napoli Federico II, Via Montesano,
49, 80138 Napoli, Italy
| | - Ettore Novellino
- Dipartimento
di Farmacia, Università di Napoli Federico II, Via Montesano,
49, 80138 Napoli, Italy
| | - Paola Conti
- Dipartimento
di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milano, Italy
| | - Andrea Mozzarelli
- Dipartimento
di Farmacia and Centro Siteia.Parma, Università di Parma, Parco Area
delle Scienze 23/A, 43124 Parma, Italy
- Istituto Nazionale di Biostrutture e Biosistemi, 00136 Roma, Italy
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Ibrahim MA, Mohammed A, Isah MB, Aliyu AB. Anti-trypanosomal activity of African medicinal plants: a review update. JOURNAL OF ETHNOPHARMACOLOGY 2014; 154:26-54. [PMID: 24742753 DOI: 10.1016/j.jep.2014.04.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 04/03/2014] [Accepted: 04/06/2014] [Indexed: 05/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE African trypanosomiasis is one of the neglected tropical diseases caused by different species of trypanosomes that affect both human and livestock with devastating consequences in the continent. Most of the affected populations commonly use traditional medicinal plants for the treatment of the disease. Consequently, this prompted ethnopharmacological research activities on the anti-trypanosomal activity of a number of these African medicinal plants in order to validate their ethnomedicinal use. Furthermore, such studies could lead to the identification of chemical leads for the development of newer anti-trypanosomal agents from those plants. This review aims to provide updated information on the ethnopharmacological evidence of African medicinal plants with anti-trypanosomal activity. METHODS Literature was collected via electronic search (PubMed, Sciencedirect, Medline and Google Scholar) from published articles that report on the in vitro or in vivo anti-trypanosomal activity of plants that were collected from different parts of Africa. RESULTS African medicinal plants investigated for in vitro and in vivo anti-trypanosomal activity from January 1993 to October 2013 are systematically compiled and all the in vivo studies are critically discussed. A total of 264 plant species belonging to 79 families were investigated for anti-trypanosomal activity. However, only 48 bioactive anti-trypanosomal compounds were successfully isolated in pure forms. Furthermore, some of the plants were investigated for possible ameliorative effects on the trypanosome-induced pathological changes out of which 18 plants were reported to be effective while a few others were not. In spite of interesting preclinical ethnopharmacological evidence for anti-trypanosomal activity, not a single African medicinal plant was investigated in a clinical study. CONCLUSION Several African medicinal plants have demonstrated promising anti-trypanosomal effects but the studies on the anti-trypanosomal potentials of these plants are not taken beyond proof of concept stage. It is hoped that the article would stimulate future clinical studies because of the paucity of knowledge in this area.
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Affiliation(s)
| | - Aminu Mohammed
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
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35
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Biochemical characterisation of glyceraldehyde 3-phosphate dehydrogenase (GAPDH) from the liver fluke, Fasciola hepatica. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2014; 1844:744-9. [PMID: 24566472 DOI: 10.1016/j.bbapap.2014.02.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 02/07/2014] [Accepted: 02/12/2014] [Indexed: 11/22/2022]
Abstract
Glyceraldehyde 3-phosphate dehydrogenase (GAPDH) catalyses one of the two steps in glycolysis which generate the reduced coenzyme NADH. This reaction precedes the two ATP generating steps. Thus, inhibition of GAPDH will lead to substantially reduced energy generation. Consequently, there has been considerable interest in developing GAPDH inhibitors as anti-cancer and anti-parasitic agents. Here, we describe the biochemical characterisation of GAPDH from the common liver fluke Fasciola hepatica (FhGAPDH). The primary sequence of FhGAPDH is similar to that from other trematodes and the predicted structure shows high similarity to those from other animals including the mammalian hosts. FhGAPDH lacks a binding pocket which has been exploited in the design of novel antitrypanosomal compounds. The protein can be expressed in, and purified from Escherichia coli; the recombinant protein was active and showed no cooperativity towards glyceraldehyde 3-phosphate as a substrate. In the absence of ligands, FhGAPDH was a mixture of homodimers and tetramers, as judged by protein-protein crosslinking and analytical gel filtration. The addition of either NAD⁺ or glyceraldehyde 3-phosphate shifted this equilibrium towards a compact dimer. Thermal scanning fluorimetry demonstrated that this form was considerably more stable than the unliganded one. These responses to ligand binding differ from those seen in mammalian enzymes. These differences could be exploited in the discovery of reagents which selectively disrupt the function of FhGAPDH.
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36
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Simoben CV, Ntie-Kang F, Lifongo LL, Babiaka SB, Sippl W, Mbaze LM. The uniqueness and therapeutic value of natural products from West African medicinal plants, part III: least abundant compound classes. RSC Adv 2014. [DOI: 10.1039/c4ra05376a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
In this review, a continuation of our in-depth coverage of natural products derived from West African medicinal plants with diverse biological activities has been given.
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Affiliation(s)
- Conrad V. Simoben
- Chemical and Bioactivity Information Centre
- Department of Chemistry
- Faculty of Science
- University of Buea
- Buea, Cameroon
| | - Fidele Ntie-Kang
- Chemical and Bioactivity Information Centre
- Department of Chemistry
- Faculty of Science
- University of Buea
- Buea, Cameroon
| | - Lydia L. Lifongo
- Chemical and Bioactivity Information Centre
- Department of Chemistry
- Faculty of Science
- University of Buea
- Buea, Cameroon
| | - Smith B. Babiaka
- Chemical and Bioactivity Information Centre
- Department of Chemistry
- Faculty of Science
- University of Buea
- Buea, Cameroon
| | - Wolfgang Sippl
- Department of Pharmaceutical Sciences
- Martin-Luther University of Halle-Wittenberg
- Halle, Saale 06120, Germany
| | - Luc Meva'a Mbaze
- Department of Chemistry
- Faculty of Science
- University of Douala
- Douala, Cameroon
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37
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Ntie-Kang F, Lifongo LL, Simoben CV, Babiaka SB, Sippl W, Mbaze LM. The uniqueness and therapeutic value of natural products from West African medicinal plants, part II: terpenoids, geographical distribution and drug discovery. RSC Adv 2014. [DOI: 10.1039/c4ra04543b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this review series, an attempt has been made to give indepth coverage of natural products derived from West African medicinal plants with diverse biological activities.
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Affiliation(s)
- Fidele Ntie-Kang
- Chemical and Bioactivity Information Centre
- Department of Chemistry
- Faculty of Science
- University of Buea
- Buea, Cameroon
| | - Lydia L. Lifongo
- Chemical and Bioactivity Information Centre
- Department of Chemistry
- Faculty of Science
- University of Buea
- Buea, Cameroon
| | - Conrad V. Simoben
- Chemical and Bioactivity Information Centre
- Department of Chemistry
- Faculty of Science
- University of Buea
- Buea, Cameroon
| | - Smith B. Babiaka
- Chemical and Bioactivity Information Centre
- Department of Chemistry
- Faculty of Science
- University of Buea
- Buea, Cameroon
| | - Wolfgang Sippl
- Department of Pharmaceutical Sciences
- Martin-Luther University of Halle-Wittenberg
- Halle, Germany
| | - Luc Meva'a Mbaze
- Department of Chemistry
- Faculty of Science
- University of Douala
- Douala, Cameroon
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