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Hirasawa Y, Kakizoe Y, Tougan T, Uchiyama N, Horii T, Morita H. Vincarostine A, a novel anti-malarial trimeric monoterpenoid indole alkaloid from Catharanthus roseus. J Nat Med 2024; 78:768-773. [PMID: 38564155 DOI: 10.1007/s11418-024-01795-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 02/24/2024] [Indexed: 04/04/2024]
Abstract
A novel trimeric monoterpenoid indole alkaloid, vincarostine A (1) consisting of an aspidosperma-iboga-aspidosperma type skeleton, was isolated from the whole plant of Catharanthus roseus. The structure including absolute stereochemistry was elucidated on the basis of 2D NMR data and CD spectrum. Vincarostine A (1) showed anti-malarial activity.
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Affiliation(s)
- Yusuke Hirasawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan.
| | - Yusuke Kakizoe
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Takahiro Tougan
- Research Center for Infectious Disease Control, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Nahoko Uchiyama
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-Ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Toshihiro Horii
- Department of Malaria Vaccine Development, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hiroshi Morita
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan.
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Chaniad P, Chukaew A, Payaka A, Phuwajaroanpong A, Techarang T, Plirat W, Punsawad C. Antimalarial potential of compounds isolated from Mammea siamensis T. Anders. flowers: in vitro and molecular docking studies. BMC Complement Med Ther 2022; 22:266. [PMID: 36224571 PMCID: PMC9554980 DOI: 10.1186/s12906-022-03742-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/25/2022] [Accepted: 09/27/2022] [Indexed: 11/21/2022] Open
Abstract
Background: The emergence of antimalarial drug resistance encourages the search for new antimalarial agents. Mammea siamensis belongs to the Calophyllaceae family, which is a medicinal plant that is used in traditional Thai preparations. The hexane and dichloromethane extracts of this plant were found to have potent antimalarial activity. Therefore, this study aimed to isolate active compounds from M. siamensis flowers and evaluate their antimalarial potential and their interactions with Plasmodium falciparum lactate dehydrogenase (PfLDH). Methods: The compounds from M. siamensis flowers were isolated by chromatographic techniques and evaluated for their antimalarial activity against chloroquine (CQ)-resistant P. falciparum (K1) strains using a parasite lactate dehydrogenase (pLDH) assay. Interactions between the isolated compounds and the PfLDH enzyme were investigated using a molecular docking method. Results: The isolation produced the following thirteen compounds: two terpenoids, lupeol (1) and a mixture of β-sitosterol and stigmasterol (5); two mammea coumarins, mammea A/AA cyclo D (6) and mammea A/AA cyclo F (7); and nine xanthones, 4,5-dihydroxy-3-methoxyxanthone (2), 4-hydroxyxanthone (3), 1,7-dihydroxyxanthone (4), 1,6-dihydroxyxanthone (8), 1-hydroxy-5,6,7-trimethoxyxanthone (9), 3,4,5-trihydroxyxanthone (10), 5-hydroxy-1-methoxyxanthone (11), 2-hydroxyxanthone (12), and 1,5-dihydroxy-6-methoxyxanthone (13). Compound 9 exhibited the most potent antimalarial activity with an IC50 value of 9.57 µM, followed by 10, 1, 2 and 13 with IC50 values of 15.48, 18.78, 20.96 and 22.27 µM, respectively. The molecular docking results indicated that 9, which exhibited the most potent activity, also had the best binding affinity to the PfLDH enzyme in terms of its low binding energy (-7.35 kcal/mol) and formed interactions with ARG109, ASN140, and ARG171. Conclusion: These findings revealed that isolated compounds from M. siamensis flowers exhibited antimalarial activity. The result suggests that 1-hydroxy-5,6,7-trimethoxyxanthone is a possible lead structure as a potent inhibitor of the PfLDH enzyme.
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Affiliation(s)
- Prapaporn Chaniad
- grid.412867.e0000 0001 0043 6347School of Medicine, Walailak University, 80160 Nakhon Si Thammarat, Thailand ,grid.412867.e0000 0001 0043 6347Research Center in Tropical Pathobiology, Walailak University, 80160 Nakhon Si Thammarat, Thailand
| | - Arnon Chukaew
- grid.444195.90000 0001 0098 2188Chemistry Department, Faculty of Science and Technology, Suratthani Rajabhat University, 84100 Surat Tani, Thailand
| | - Apirak Payaka
- grid.412867.e0000 0001 0043 6347School of Science, Walailak University, 80160 Nakhon Si Thammarat, Thailand
| | - Arisara Phuwajaroanpong
- grid.412867.e0000 0001 0043 6347School of Medicine, Walailak University, 80160 Nakhon Si Thammarat, Thailand
| | - Tachpon Techarang
- grid.412867.e0000 0001 0043 6347School of Medicine, Walailak University, 80160 Nakhon Si Thammarat, Thailand ,grid.412867.e0000 0001 0043 6347Research Center in Tropical Pathobiology, Walailak University, 80160 Nakhon Si Thammarat, Thailand
| | - Walaiporn Plirat
- grid.412867.e0000 0001 0043 6347School of Medicine, Walailak University, 80160 Nakhon Si Thammarat, Thailand
| | - Chuchard Punsawad
- grid.412867.e0000 0001 0043 6347School of Medicine, Walailak University, 80160 Nakhon Si Thammarat, Thailand ,grid.412867.e0000 0001 0043 6347Research Center in Tropical Pathobiology, Walailak University, 80160 Nakhon Si Thammarat, Thailand
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Dwivedi MK, Shukla R, Sharma NK, Manhas A, Srivastava K, Kumar N, Singh PK. Evaluation of ethnopharmacologically selected Vitex negundo L. for In vitro antimalarial activity and secondary metabolite profiling. J Ethnopharmacol 2021; 275:114076. [PMID: 33789139 DOI: 10.1016/j.jep.2021.114076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 03/03/2021] [Accepted: 03/23/2021] [Indexed: 06/12/2023]
Abstract
ETHANOPHARMACOLOGICAL RELEVANCE Limited drugs, rise in drug resistance against frontline anti-malarial drugs, non-availability of efficacious vaccines and high cost of drug development hinders malaria intervention programs. Search for safe, effective and affordable plant based anti-malarial agents, thus becomes crucial and vital in the current scenario. The Vitex negundo L. is medicinal plant possessing a variety of pharmaceutically important compounds. The plant is used traditionally worldwide for the treatment of malaria including India and Malaysia by the indigenous tribes. In vitro studies have reported the anti-malarial use of the plant in traditional medicinal systems. AIM OF THE STUDY The aim of the current study is to evaluate the traditionally used medicinal plants for in vitro anti-malarial activity against human malaria parasite Plasmodium falciparum and profiling secondary metabolite using spectroscopic and chromatographic methods. Chemical profiling of active secondary metabolites in the extracts was undertaken using LC-MS. MATERIALS AND METHODS Based on the ethno-botanical data V. negundo L. was selected for in vitro anti-malarial activity against P. falciparum chloroquine-sensitive (3D7) and multidrug resistant (K1) strains using SYBR Green-I based fluorescence assay. Cytotoxicity of extracts was evaluated in VERO cell line using the MTT assay. Haemolysis assay was performed using human red blood cells. Secondary metabolites profiling was undertaken using chromatographic and spectroscopic analysis. Liquid chromatography analysis was performed using a C18, 150 X 2.1, 2.6 μm column with gradient mobile phase Solvent A: 95% (H2O: ACN), Solvent B: Acetonitrile, Solvent C: Methanol, Solvent D: 5 mM NH4 in 95:5 (H2O: ACN) at a constant flow rate of 0.250 ml/min. The LC-MS spectra were acquired in both positive and negative ion modes with electrospray ionization (ESI) source. RESULTS The anti-malarial active extract of V. negundo L. leaf exhibited potent anti-malarial activity with IC50 values of 7.21 μg/ml and 7.43 μg/ml against 3D7 and K1 strains, respectively with no evidence of significant cytotoxicity against mammalian cell line (VERO) and no toxicity as observed in haemolysis assay. The HPLC-LC-MS analysis of the extract led to identification of 73 compounds. We report for the first time the presence of Sabinene hydrate acetate, 5-Hydroxyoxindole, 2(3,4-dimethoxyphenyl)-6, 7-dimethoxychromen-4-one, Cyclotetracosa-1, 13-diene and 5, 7-Dimethoxyflavanone in the anti-malarial active extract of V. negundo L. leaf. Agnuside, Behenic acid and Globulol are some of the novel compounds with no reports of anti-malarial activity so far and require further evaluation in pure form for the development of potent anti-malarial compounds. CONCLUSIONS The result report and scientifically validate the traditional use of V. negundo L. for the treatment of malaria providing new avenues for anti-malarial drug development. Several novel and unknown compounds were identified that need to be further characterized for anti-malarial potential.
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Affiliation(s)
- Manish Kumar Dwivedi
- Department of Biotechnology, Indira Gandhi National Tribal University, Amarkantak, Madhya Pradesh, 484 887, India
| | - Ravindra Shukla
- Department of Botany, Indira Gandhi National Tribal University, Amarkantak, Madhya Pradesh, 484887, India
| | - Naveen Kumar Sharma
- Department of Botany, Indira Gandhi National Tribal University, Amarkantak, Madhya Pradesh, 484887, India
| | - Ashan Manhas
- Department of Molecular Parasitology and Immunology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Kumkum Srivastava
- Department of Molecular Parasitology and Immunology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Niti Kumar
- Department of Molecular Parasitology and Immunology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Prashant Kumar Singh
- Department of Biotechnology, Indira Gandhi National Tribal University, Amarkantak, Madhya Pradesh, 484 887, India.
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Abstract
The genome data of Streptomyces sp. FH025 comprised of 8,381,474 bp with a high GC content of 72.51%. The genome contains 7035 coding sequences spanning 1261 contigs. Streptomyces sp. FH025 contains 57 secondary metabolite gene clusters including polyketide synthase, nonribosomal polyketide synthase and other biosynthetic pathways such as amglyccycl, butyrolactone, terpenes, siderophores, lanthipeptide-class-iv, and ladderane. 16S rRNA analysis of Streptomyces sp. FH025 is similar to the Streptomyces genus. This whole genome project has been deposited at NCBI under the accession JAFLNG000000000.
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Affiliation(s)
- Lucky Poh Wah Goh
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah, 88400 Kota Kinabalu, Sabah. Malaysia
| | - Fauze Mahmud
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah, 88400 Kota Kinabalu, Sabah. Malaysia
| | - Ping-Chin Lee
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah, 88400 Kota Kinabalu, Sabah. Malaysia
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Chaniad P, Mungthin M, Payaka A, Viriyavejakul P, Punsawad C. Antimalarial properties and molecular docking analysis of compounds from Dioscorea bulbifera L. as new antimalarial agent candidates. BMC Complement Med Ther 2021; 21:144. [PMID: 34006257 PMCID: PMC8132342 DOI: 10.1186/s12906-021-03317-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 05/06/2021] [Indexed: 01/27/2023] Open
Abstract
Background At present, the emergence and spread of antimalarial drug resistance has become a significant problem worldwide. There has been a challenge in searching for natural products for the development of novel antimalarial drugs. Therefore, this study aims to evaluate compounds from Dioscorea bulbifera responsible for antimalarial properties and investigate potential interactions of the compounds with Plasmodium falciparum lactate dehydrogenase (PfLDH), an essential glycolytic enzyme in the parasite’s life cycle. Methods An in vitro study of antimalarial activity against chloroquine (CQ)-resistant Plasmodium falciparum (K1 strain) and CQ-sensitive P. falciparum (3D7 strain) was performed using the 3H-hypoxanthine uptake inhibition method. The cytotoxic effects of the pure compounds were tested against Vero cells using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The interactions of the compounds with the PfLDH active site were additionally investigated using a molecular docking method. Results Quercetin (6) exhibited the highest antimalarial activity against the P. falciparum K1 and 3D7 strains, with IC50 values of 28.47 and 50.99 μM, respectively. 2,4,3′,5′-Tetrahydroxybibenzyl (9), 3,5-dimethoxyquercetin (4) and quercetin-3-O-β-D-galactopyranoside (14) also possessed antimalarial effects against these two strains of P. falciparum. Most pure compounds were nontoxic against Vero cells at a concentration of 80 μg/ml, except for compound 9, which had a cytotoxic effect with a CC50 value of 16.71 μM. The molecular docking results indicated that 9 exhibited the best binding affinity to the PfLDH enzyme in terms of low binding energy (− 8.91 kcal/mol) and formed strong hydrogen bond interactions with GLY29, GLY32, THR97, GLY99, PHE100, THR101 and ASN140, amino acids as active sites. In addition, 6 also possessed remarkable binding affinity (− 8.53 kcal/mol) to PfLDH by interacting with GLY29, ILE31, ASP53, ILE54, THR97 and THR101. Conclusion Quercetin is a major active compound responsible for the antimalarial activity of D. bulbifera and is an inhibitor of PfLDH. These findings provide more evidence to support the traditional use of D. bulbifera for malaria treatment. Structural models of its interactions at the PfLDH active site are plausibly useful for the future design of antimalarial agents.
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Affiliation(s)
- Prapaporn Chaniad
- School of Medicine, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Mathirut Mungthin
- Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, 10400, Thailand
| | - Apirak Payaka
- School of Science, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Parnpen Viriyavejakul
- Department of Tropical Pathology, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand
| | - Chuchard Punsawad
- School of Medicine, Walailak University, Nakhon Si Thammarat, 80160, Thailand.
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Verma DK, Niamah AK, Patel AR, Thakur M, Singh Sandhu K, Chávez-González ML, Shah N, Noe Aguilar C. Chemistry and microbial sources of curdlan with potential application and safety regulations as prebiotic in food and health. Food Res Int 2020; 133:109136. [PMID: 32466929 DOI: 10.1016/j.foodres.2020.109136] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 02/28/2020] [Accepted: 02/29/2020] [Indexed: 12/24/2022]
Abstract
Curdlan - a homopolysaccharide is comprised of glucose using β-1,3-glycosidic bond and produced by different types of microorganisms as exopolysaccharide. Curdlan gel is stable during freezing and thawing processes which find several applications in food and pharmaceutical industries. It acts as a prebiotic, stabilizer and water-holding, viscosifying and texturing agent. Additionally, curdlan gel is used as a food factor to develop the new products e.g. milk fat substitute, non-fat whipped cream, retorting (freeze-drying) process of Tofu, low-fat sausage, and low-fat hamburger. However, a great variation exists among different countries regarding the regulatory aspects of curdlan as food additives, dietary components or prebiotic substances. Therefore, the present review paper aims to discuss safety issues and the establishment of common guidelines and legislation globally, focusing on the use the applications of curdlan in the food sector including the development of noodles, meat-based products, and fat-free dairy products. This review analyzes and describes in detail the potential of curdlan as a sustainable alternative additive in health and food industries, emphasizing on the chemical composition, production, properties, and potential applications.
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Muluye AB, Desta AG, Abate SK, Dano GT. Anti-malarial activity of the root extract of Euphorbia abyssinica (Euphorbiaceae) against Plasmodium berghei infection in mice. Malar J 2019; 18:261. [PMID: 31362744 PMCID: PMC6668069 DOI: 10.1186/s12936-019-2887-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 07/22/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND More than 200 medicinal plants including Euphorbia abyssinica are utilized for treatment of malaria in Ethiopian traditional medical practices. However, the safety, efficacy and quality of these medicinal plants are largely unknown. Pharmacological and toxicological investigations of these plants are among the prioritized issues in every country. The aim of this study was, therefore, to evaluate the anti-malarial activity of Euphorbia abyssinica root extract against Plasmodium berghei infection in mice. METHODS The fresh roots of Euphorbia abyssinica were identified and collected. They were dried and extracted by 80% methanol using maceration. Acute toxicity of the extract was done using female Swiss albino mice. Anti-malarial activity of the extract was done by a standard 4-day suppressive test using chloroquine-sensitive Plasmodium berghei. Twenty-five male Swiss albino mice were randomly grouped into 5 groups of 5 mice each. Group I was treated with distilled water (10 ml/kg), group II, III, and IV were treated with 200, 400, and 600 mg/kg of extract, respectively and group V was treated with chloroquine (25 mg/kg). The level of parasitaemia, survival time, and variation in weight were utilized to determine the anti-malarial activity of the extract. Data was analysed using ANOVA followed by Tukey test. RESULTS The plant extract did not show any sign of toxicity and mortality at 2000 mg/kg. The 4-day chemosuppressive anti-malarial activities produced by the crude extract were 66.87% (P < 0.001), 84.94% (P < 0.001) and 93.69% (P < 0.001) at 200, 400 and 600 mg/kg extract, respectively, compared to distilled water treated group. Mice treated with 400 mg/kg (P < 0.01), and 600 mg/kg extract (P < 0.001) showed significant chemosuppressive anti-malarial activity variations as compared to mice treated with 200 mg/kg extract. Mice treated with 600 mg/kg extract significantly (P < 0.001) lived longer than distilled water treated mice. However, the crude extract did not cause any significant change on body weights of mice. CONCLUSIONS From this study, it can be concluded that the root of Euphorbia abyssinica showed very good 4-day chemosuppressive anti-malarial activity. The plant might contain biologically active compounds which are relevant for treatment of malaria. Further phytochemical, toxicological and pharmacological investigations are, therefore, required to evaluate its anti-malarial potential.
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Affiliation(s)
- Abrham Belachew Muluye
- Department of Pharmacy, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia.
| | - Ashenafi Genanew Desta
- Department of Pharmacy, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
| | - Selamu Kebamo Abate
- Department of Pharmacy, College of Health Sciences, Wachamo University, Hosanna, Ethiopia
| | - Gemechu Tiruneh Dano
- Department of Medical Laboratory Sciences, College of Health Sciences, Wollega University, Nekemte, Ethiopia
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Tougan T, Takahashi K, Ikegami-Kawai M, Horiuchi M, Mori S, Hosoi M, Horii T, Ihara M, Tsubuki M. In vitro and in vivo characterization of anti-malarial acylphenoxazine derivatives prepared from basic blue 3. Malar J 2019; 18:237. [PMID: 31307493 PMCID: PMC6631887 DOI: 10.1186/s12936-019-2873-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 07/07/2019] [Indexed: 11/12/2022] Open
Abstract
Background Basic blue 3 is a promising anti-malarial lead compound based on the π-delocalized lipophilic cation hypothesis. Its derivatives with nitrogen atoms bonded to carbon atoms at the 3- and 7-positions on the phenoxazine ring were previously shown to exert potent antiprotozoal activity against Plasmodium falciparum, Trypanosoma cruzi, Trypanosoma brucei rhodesiense, and Leishmania donovani parasites in vitro. However, compounds with nitrogen modification at the 10-position on the phenoxazine ring were not evaluated. Methods Six acylphenoxazine derivatives (ITT-001 to 006) with nitrogen modification at the 10-position on the phenoxazine ring, which were synthesized from basic blue 3, were characterized and evaluated for anti-malarial activity in vitro with an automated haematology analyzer (XN-30) and light microscopy. Intensity of self-fluorescence was measured using a fluorometer. Localization of basic blue 3 was observed by fluorescence microscopy. Cytotoxicity was evaluated using human cell lines, HEK293T and HepG2 cells. Finally, anti-malarial activity was evaluated in a rodent malaria model. Results All the six derivatives showed anti-malarial efficacy even against chloroquine-, pyrimethamine-, and artemisinin-resistant field isolates similar to the sensitive strains and isolates in vitro. The efficacy of basic blue 3 was the strongest, followed by that of ITT-001 to 004 and 006, while that of ITT-005 was the weakest. Basic blue 3 showed strong self-fluorescence, whereas ITT derivatives had five- to tenfold lower intensity than that of basic blue 3, which was shown by fluorescence microscopy to be selectively accumulated in the plasmodial cytoplasm. In contrast, ITT-003, 004, and 006 exhibited the lowest cytotoxicity in HEK293T and HepG2 cells in vitro and the highest selectivity between anti-malarial activity and cytotoxicity. The in vivo anti-malarial assay indicated that oral administration of ITT-004 was the most effective against the rodent malaria parasite, Plasmodium berghei NK65 strain. Conclusions The six ITT derivatives were effective against chloroquine- and pyrimethamine-resistant strains and artemisinin-resistant field isolates as well as the sensitive ones. Among them, ITT-004, which had high anti-malarial activity and low cytotoxicity in vitro and in vivo, is a promising anti-malarial lead compound. Electronic supplementary material The online version of this article (10.1186/s12936-019-2873-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Takahiro Tougan
- Department of Molecular Protozoology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Kazunori Takahashi
- Institute of Medicinal Chemistry, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo, 142-8501, Japan
| | - Mayumi Ikegami-Kawai
- Faculty of Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo, 142-8501, Japan
| | - Masako Horiuchi
- Faculty of Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo, 142-8501, Japan
| | - Shiho Mori
- Institute of Medicinal Chemistry, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo, 142-8501, Japan
| | - Maiko Hosoi
- Institute of Medicinal Chemistry, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo, 142-8501, Japan
| | - Toshihiro Horii
- Department of Molecular Protozoology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Masataka Ihara
- Institute of Medicinal Chemistry, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo, 142-8501, Japan
| | - Masayoshi Tsubuki
- Institute of Medicinal Chemistry, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo, 142-8501, Japan
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do Nascimento MS, Pina NDPV, da Silva ASB, Gomes LFDS, de Vasconcellos F, Brandão GC, do Nascimento MFA, de Oliveira AB, Barbosa WLR. In vitro antiplasmodial activity and identification, using tandem LC-MS, of alkaloids from Aspidosperma excelsum, a plant used to treat malaria in Amazonia. J Ethnopharmacol 2019; 228:99-109. [PMID: 30201230 DOI: 10.1016/j.jep.2018.09.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 08/31/2018] [Accepted: 09/06/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Aspidosperma excelsum Benth. (Apocynaceae), a native tree in the Brazilian Amazonia, is traditionally used to treat various diseases, including malaria. AIM OF STUDY To investigate the chemical constitution, antiplasmodial activity and cytotoxicity of samples obtained from A. excelsum trunk bark by different procedures aiming to evaluate their potential as an antimalarial phytomedicine. MATERIALS AND METHODS A hydroethanolic extract and alkaloid extracts were prepared and assayed for antiplasmodial activity and cytotoxicity against chloroquine-resistant Plasmodium falciparum (W2 strain) and HepG2 cells, respectively. Taking into account the known occurrence and antimalarial activity of Aspidosperma monoterpene indole alkaloids (MIA), acid-base extractions were carried out and the fractions were assayed for antiplasmodial activity and cytotoxicity. All the samples were analysed by hyphenated chromatographic techniques, such as UPLC-DAD-ESI-MS/MS and HRMS (HPLC-MS MicroTOF), comparing their chemical composition to the literature data. RESULTS The hydroethanolic extract disclosed a moderate in vitro activity against chloroquine-resistant Plasmodium falciparum (W2 strain) with IC50 23.68 ± 3.08 µg/mL), low cytotoxicity to HepG2 cells (> 250 µg/mL) and good SI (> 10.56). A total of 20 known monoterpene indole alkaloids were identified, seven of which are here firstly described for A. excelsum. Known highly active alkaloids, namely demethylaspidospermine, aspidocarpine, and ochrolifuanine are present in active alkaloid fractions and might contribute to their observed antiplasmodial effect. An alkaloid fraction (Ae-Alk2), obtained directly from trunk bark by extraction with dil. aqueous HCl, pointed out for its activity (IC50 8.75±2.26 µg/mL, CC50 185.14±1.97 µg/mL, SI 21.16) and should be highlighted as the most promising out of the assayed samples. CONCLUSION The present results represent a preliminary support to the alleged antimalarial use of A. excelsum trunk bark and allowed to highlight alkaloid fractions as promising phytomedicines.
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Affiliation(s)
- Myrth Soares do Nascimento
- Graduate Program in Pharmaceutical Sciences, Federal University of Pará, R. Augusto Corrêa, 01, Guamá, CEP 66075-110 Belém, Pará, Brazil
| | - Nayla di Paula Vieira Pina
- Graduate Program in Pharmaceutical Sciences, Federal University of Pará, R. Augusto Corrêa, 01, Guamá, CEP 66075-110 Belém, Pará, Brazil
| | - Andressa Santa Brigida da Silva
- Graduate Program in Pharmaceutical Sciences, Federal University of Pará, R. Augusto Corrêa, 01, Guamá, CEP 66075-110 Belém, Pará, Brazil
| | - Luís Fabio Dos Santos Gomes
- Graduate Program in Pharmaceutical Sciences, Federal University of Pará, R. Augusto Corrêa, 01, Guamá, CEP 66075-110 Belém, Pará, Brazil
| | - Flávio de Vasconcellos
- Graduate Program in Pharmaceutical Sciences, Federal University of Pará, R. Augusto Corrêa, 01, Guamá, CEP 66075-110 Belém, Pará, Brazil
| | - Geraldo Célio Brandão
- Faculty of Pharmacy, Federal University of Ouro Preto, R. Diogo de Vasconcelos, 122, Pilar, CEP 35400-000 Ouro Preto, Minas Gerais, Brazil
| | - Maria Fernanda Alves do Nascimento
- Faculty of Pharmacy, Federal University of Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Alaíde Braga de Oliveira
- Faculty of Pharmacy, Federal University of Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Wagner Luiz Ramos Barbosa
- Graduate Program in Pharmaceutical Sciences, Federal University of Pará, R. Augusto Corrêa, 01, Guamá, CEP 66075-110 Belém, Pará, Brazil; Faculty of Pharmacy, Institute of Health Sciences, Federal University of Pará, R. Augusto Corrêa, 01, Guamá, CEP 66075-110 Belém, Pará, Brazil.
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Qidwai T. QSAR modeling, docking and ADMET studies for exploration of potential anti-malarial compounds against Plasmodium falciparum. In Silico Pharmacol 2016; 5:6. [PMID: 28726171 DOI: 10.1007/s40203-017-0026-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Accepted: 07/08/2017] [Indexed: 10/19/2022] Open
Abstract
Development of resistance in the Plasmodium falciparum to Artemisinin, the most effective anti-malarial compound, threatens malaria elimination tactics. To gain more efficacious Artemisinin derivatives, QSAR modeling and docking was performed. In the present study, 2D-QSAR model and molecular docking were used to evaluate the Artemisinin compounds and to reveal their binding modes and structural basis of inhibitory activity. Moreover, ADMET-related descriptors have been calculated to predict the pharmacokinetic properties of the effective compounds. The correlation expressed as coefficient of determination (r2) and prediction accuracy expressed in the form of cross-validated r2 (q2) of QSAR model are found 0.9687 and 0.9586, respectively. Total 239 descriptors have been included in the study as independent variables. The four chemical descriptors, namely radius of gyration, mominertia Z, SssNH count and SK Average have been found to be well correlated with anti-malarial activities. The model was statistically robust and has good predictive power which could be employed for virtual screening of proposed anti-malarial compounds. QSAR and docking results revealed that studied compounds exhibit good anti-malarial activities and binding affinities. The outcomes could be useful for the design and development of the potent inhibitors which after optimization can be potential therapeutics for malaria.
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Thakkar SS, Thakor P, Doshi H, Ray A. 1,2,4-Triazole and 1,3,4-oxadiazole analogues: Synthesis, MO studies, in silico molecular docking studies, antimalarial as DHFR inhibitor and antimicrobial activities. Bioorg Med Chem 2017; 25:4064-75. [PMID: 28634040 DOI: 10.1016/j.bmc.2017.05.054] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
1,2,4-Triazole and 1,3,4-oxadiazole analogues are of interest due to their potential activity against microbial and malarial infections. In search of suitable antimicrobial and antimalarial compounds, we report here the synthesis, characterization and biological activities of 1,2,4-triazole and 1,3,4-oxadiazole analogues (SS 1-SS 10). The molecules were characterized by IR, mass, 1H NMR, 13C NMR and elemental analysis. The in vitro antimicrobial activity was investigated against pathogenic strains, the results were explained with the help of DFT and PM6 molecular orbital calculations. In vitro cytotoxicity and genotoxicity of the molecules were studied against S. pombe cells. In vitro antimalarial activity was studied. The active compounds were further evaluated for enzyme inhibition efficacy against the receptor Pf-DHFR computationally as well as in vitro to prove their candidature as lead dihydrofolate reductase inhibitors.
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Frausin G, Hidalgo ADF, Lima RBS, Kinupp VF, Ming LC, Pohlit AM, Milliken W. An ethnobotanical study of anti-malarial plants among indigenous people on the upper Negro River in the Brazilian Amazon. J Ethnopharmacol 2015. [PMID: 26216513 DOI: 10.1016/j.jep.2015.07.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
BACKGROUND In this article we present the plants used for the treatment of malaria and associated symptoms in Santa Isabel do Rio Negro in the Brazilian Amazon. The region has important biological and cultural diversities including more than twenty indigenous ethnic groups and a strong history in traditional medicine. OBJECTIVE The aims of this study are to survey information in the Baniwa, Baré, Desana, Piratapuia, Tariana, Tukano, Tuyuca and Yanomami ethnic communities and among caboclos (mixed-ethnicity) on (a) plant species used for the treatment of malaria and associated symptoms, (b) dosage forms and (c) distribution of these anti-malarial plants in the Amazon. METHODS Information was obtained through classical ethnobotanical and ethnopharmacological methods from interviews with 146 informants in Santa Isabel municipality on the upper Negro River, Brazil. RESULTS Fifty-five mainly native neotropical plant species from 34 families were in use. The detailed uses of these plants were documented. The result was 187 records (64.5%) of plants for the specific treatment of malaria, 51 records (17.6%) of plants used in the treatment of liver problems and 29 records (10.0%) of plants used in the control of fevers associated with malaria. Other uses described were blood fortification ('dar sangue'), headache and prophylaxis. Most of the therapeutic preparations were decoctions and infusions based on stem bark, root bark and leaves. These were administered by mouth. In some cases, remedies were prepared with up to three different plant species. Also, plants were used together with other ingredients such as insects, mammals, gunpowder and milk. CONCLUSION This is the first study on the anti-malarial plants from this region of the Amazon. Aspidosperma spp. and Ampelozizyphus amazonicus Ducke were the most cited species in the communities surveyed. These species have experimental proof supporting their anti-malarial efficacy. The dosage of the therapeutic preparations depends on the kind of plant, quantity of plant material available, the patient's age (children and adults) and the local expert. The treatment time varies from a single dose to up to several weeks. Most anti-malarial plants are domesticated or grow spontaneously. They are grown in home gardens, open areas near the communities, clearings and secondary forests, and wild species grow in areas of seasonally flooded wetlands and terra firme ('solid ground') forest, in some cases in locations that are hard to access. Traditional knowledge of plants was found to be falling into disuse presumably as a consequence of the local official health services that treat malaria in the communities using commercial drugs. Despite this, some species are used in the prevention of this disease and also in the recovery after using conventional anti-malarial drugs.
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Affiliation(s)
- Gina Frausin
- Coordenação de Tecnologia e Inovação, Instituto Nacional de Pesquisas da Amazônia, Avenida André Araújo, 2936, Petrópolis, CEP 69067-375 Manaus, Amazonas, Brazil.
| | - Ari de Freitas Hidalgo
- Faculdade de Ciências Agrárias, Universidade Federal do Amazonas, Avenida General Rodrigo Otávio Jordão Ramos, 6200, Coroado I, CEP 69077-000 Manaus, Amazonas, Brazil.
| | - Renata Braga Souza Lima
- Programa de Pós-graduação em Biotecnologia, Universidade Federal do Amazonas, Avenida General Rodrigo Otavio Jordão Ramos, 6200, Coroado I, CEP 69077-000 Manaus, Amazonas, Brazil.
| | - Valdely Ferreira Kinupp
- Instituto Federal de Educação, Ciência e Tecnologia do Amazonas, Avenida Ferreira Pena, 1109, Centro, CEP 69025-010 Manaus, Amazonas, Brazil.
| | - Lin Chau Ming
- Faculdade de Ciências Agronômicas, Universidade Estadual Paulista "Júlio de Mesquita Filho", Fazenda Experimental Lageado, Rua José Barbosa de Barros, 1780, Caixa Postal 237, CEP 18610-307 Botucatu, São Paulo, Brazil.
| | - Adrian Martin Pohlit
- Coordenação de Tecnologia e Inovação, Instituto Nacional de Pesquisas da Amazônia, Avenida André Araújo, 2936, Petrópolis, CEP 69067-375 Manaus, Amazonas, Brazil.
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Abu Ali H, Fares H, Darawsheh M, Rappocciolo E, Akkawi M, Jaber S. Synthesis, characterization and biological activity of new mixed ligand complexes of Zn(II) naproxen with nitrogen based ligands. Eur J Med Chem 2014; 89:67-76. [PMID: 25462227 DOI: 10.1016/j.ejmech.2014.10.032] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 09/26/2014] [Accepted: 10/12/2014] [Indexed: 11/18/2022]
Abstract
A series of novel Zn(II) complexes [Zn2(nap)4] (1), [Zn(nap)21,10-phen](2), [Zn(nap)22,9-dmphen] (3), [Zn(nap)2(2-ampy)2] (4), [Zn(nap)2(imid)2] (5), [Zn(nap)2(1,2-dmimid)2] (6) (nap = naproxen, 1,10-phen = 1,10-phenanthroline, 2,9-dmphen = 2,9-dimethyl-1,10-phenanthroline, 2-ampy = 2-aminopyridine, imid = imidazole, 1,2-dmimid = 1,2-dimethyl imidazole) were synthesized and characterized using IR, UV-Vis, (1)H NMR, (13)C{(1)H} NMR spectroscopy. The crystal structure of complex 3 was determined using single-crystal X-ray diffraction. In order to assess the effect of the metal ions on the anti-bacterial activity, complexes 1-6 have been screened in vitro, against (G(+)) bacteria (Staphylococcus aureus and Micrococcus luteus) and (G(-)) bacteria (Klebsiella pneumoniae, Pseudomonas aeruginosa, Proteus mirabilis and Escherichia coli) using the agar well diffusion method. Complex 2 was the only complex that showed antibacterial activity against P. aeruginosa, where the complexation of the parent ligand 1,10-phenathroline enhanced significantly the activity. All the complexes showed different activity against the different bacteria, and were compared with activity of the parent ligands. The complexes were tested also for their anti-malarial activity using two methods: a semi-quantitative micro-assay and a previously self-developed quantitative in-vitro method. Both were used to study the efficiency of these complexes in inhibiting the formation of the Malaria pigment. This is considered an important target of many known anti-malarial drugs such as Chloroquine and Amodaquine. Results showed that the efficiency of complex 3 in preventing the formation of β-hematin was 75%. The efficiency of Amodiaquine as a standard drug was reported to give 92.5.
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Affiliation(s)
- Hijazi Abu Ali
- Department of Chemistry, Birzeit University, P.O. Box 14, West Bank, Palestine.
| | - Hadeel Fares
- Department of Chemistry, Birzeit University, P.O. Box 14, West Bank, Palestine
| | - Mohanad Darawsheh
- Department of Chemistry, Birzeit University, P.O. Box 14, West Bank, Palestine
| | - Emilia Rappocciolo
- Department of Biology and Biochemistry, Birzeit University, West Bank, Palestine
| | - Mutaz Akkawi
- Department of Life Sciences, Al-Quds University, West Bank, Palestine
| | - Suhair Jaber
- Department of Life Sciences, Al-Quds University, West Bank, Palestine
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