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Cruz-Vallejo V, Zarco-Mendoza A, Morales-Ramírez P. Kinetics of the in vivo genotoxic and radioprotective effects of methyl gallate and epigallocatechin gallate. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2023; 64:393-400. [PMID: 37431273 DOI: 10.1002/em.22563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/19/2023] [Accepted: 07/07/2023] [Indexed: 07/12/2023]
Abstract
The aim of this study was to compare the kinetics of the in vivo action of equimolar doses of methyl gallate (MG) and epigallocatechin gallate (EGCG) on their capacity to induce DNA damage and to protect against DNA damage induced by 60 Co gamma rays. DNA-damaged cells were determined by single-cell gel electrophoresis (comets) in murine peripheral blood leukocytes. The maximum radioprotective effects of MG and EGCG (approximately 70%) occurred at 15 min after administration when their effect was determined 2 min following irradiation. MG and EGCG have similar radioprotective indexes, which due to their fast response indicate that they are involved in free radical scavenging. Due to the similar radioprotective activities of MG and EGCG, the in vivo radioprotective effects of these agents do not seem to be dependent on the number of hydroxyl groups present in their structures but instead on the presence of the galloyl radical. EGCG induces an early, significant, and persistent increase in the number of DNA-damaged cells and a later and more important increase in the number of damaged cells, suggesting that it has two mechanisms by which it can induce DNA damage. MG at the same molar dose as EGCG caused a significant and persistent increase in DNA damaged cells but to a much lesser extent to that induce by EGCG, suggesting that the galloyl radical is not involved in the mechanism of DNA breaks induction.
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Affiliation(s)
- Virginia Cruz-Vallejo
- Biology Department, Instituto Nacional de Investigaciones Nucleares, Mexico City, Mexico
| | - Anaís Zarco-Mendoza
- Biology Department, Instituto Nacional de Investigaciones Nucleares, Mexico City, Mexico
| | - Pedro Morales-Ramírez
- Biology Department, Instituto Nacional de Investigaciones Nucleares, Mexico City, Mexico
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Swana L, Tsakem B, Tembu JV, Teponno RB, Folahan JT, Kalinski JC, Polyzois A, Kamatou G, Sandjo LP, Chamcheu JC, Siwe-Noundou X. The Genus Dacryodes Vahl.: Ethnobotany, Phytochemistry and Biological Activities. Pharmaceuticals (Basel) 2023; 16:ph16050775. [PMID: 37242558 DOI: 10.3390/ph16050775] [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: 02/28/2023] [Revised: 05/10/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
Dacryodes Vahl. species, belonging to the Burseraceae family, are widely used in traditional medicine in tropical regions to treat a range of ailments including malaria, wounds, tonsillitis, and ringworms. This review discusses the distribution, ethnobotanical uses, phytochemistry, and bioactivities of Dacryodes species. The intent is to spur future research into isolating and identifying key active principles, secondary metabolites, and crude extracts, and evaluating their pharmacological and toxicological effects, as well as the mechanism of actions to understand their medicinal benefits. A systematic review of scientific electronic databases from 1963 to 2022 including Scifinder, Scopus, Pubmed, Springer Link, ResearchGate, Ethnobotany Research and Applications, Google Scholar, and ScienceDirect was conducted with a focus on Dacryodes edulis (G.Don) H.J. Lam and Dacryodes rostrata (Blume) H.J. Lam. Pharmacological data revealed that D. edulis isolates contain secondary metabolites and other phytochemical groups belonging to the terpenoids class with anti-microbial, anticancer, antidiabetic, antiinflammatory and hepatoprotective activities, highlighting its pharmacological potential in the therapy or management of diverse cancers, cardiovascular, and neurological diseases. Thus, phytochemicals and standardized extracts from D. edulis could offer safer and cost-effective chemopreventive and chemotherapeutic health benefits/regimen, or as alternative therapeutic remedy for several human diseases. Nevertheless, the therapeutic potential of most of the plants in the genus have not been exhaustively explored with regard to phytochemistry and pharmacology, but mostly complementary approaches lacking rigorous, scientific research-based knowledge. Therefore, the therapeutic potentials of the Dacryodes genus remain largely untapped, and comprehensive research is necessary to fully harness their medicinal properties.
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Affiliation(s)
- Leseho Swana
- Department of Pharmaceutical Sciences, School of Pharmacy, Sefako Makgatho Health Sciences University, P.O. Box 218, Pretoria 0208, South Africa
| | - Bienvenu Tsakem
- Department of Chemistry, Faculty of Science, University of Dschang, Dschang P.O. Box 67, Cameroon
| | - Jacqueline V Tembu
- Department of Chemistry, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa
| | - Rémy B Teponno
- Department of Chemistry, Faculty of Science, University of Dschang, Dschang P.O. Box 67, Cameroon
| | - Joy T Folahan
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71209, USA
| | - Jarmo-Charles Kalinski
- Department of Biochemistry and Microbiology, Rhodes University, Makhanda 6140, South Africa
| | - Alexandros Polyzois
- Department of Biochemistry and Microbiology, Rhodes University, Makhanda 6140, South Africa
| | - Guy Kamatou
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa
| | - Louis P Sandjo
- Department of Chemistry, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil
| | - Jean Christopher Chamcheu
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71209, USA
| | - Xavier Siwe-Noundou
- Department of Pharmaceutical Sciences, School of Pharmacy, Sefako Makgatho Health Sciences University, P.O. Box 218, Pretoria 0208, South Africa
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Ajjarapu SM, Tiwari A, Taj G, Singh DB, Singh S, Kumar S. Simulation studies, 3D QSAR and molecular docking on a point mutation of protein kinase B with flavonoids targeting ovarian Cancer. BMC Pharmacol Toxicol 2021; 22:68. [PMID: 34727985 PMCID: PMC8564994 DOI: 10.1186/s40360-021-00512-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 07/09/2021] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Ovarian cancer is the world's dreaded disease and its prevalence is expanding globally. The study of integrated molecular networks is crucial for the basic mechanism of cancer cells and their progression. During the present investigation, we have examined different flavonoids that target protein kinases B (AKT1) protein which exerts their anticancer efficiency intriguing the role in cross-talk cell signalling, by metabolic processes through in-silico approaches. METHOD Molecular dynamics simulation (MDS) was performed to analyze and evaluate the stability of the complexes under physiological conditions and the results were congruent with molecular docking. This investigation revealed the effect of a point mutation (W80R), considered based on their frequency of occurrence, with AKT1 protein. RESULTS The ligand with high docking scores and favourable behaviour on dynamic simulations are proposed as potential W80R inhibitors. A virtual screening analysis was performed with 12,000 flavonoids satisfying Lipinski's rule of five according to which drug-likeness is predicted based on its pharmacological and biological properties to be active and taken orally. The pharmacokinetic ADME (adsorption, digestion, metabolism, and excretion) studies featured drug-likeness. Subsequently, a statistically significant 3D-QSAR model of high correlation coefficient (R2) with 0.822 and cross-validation coefficient (Q2) with 0.6132 at 4 component PLS (partial least square) were used to verify the accuracy of the models. Taxifolin holds good interactions with the binding domain of W80R, highest Glide score of - 9.63 kcal/mol with OH of GLU234 and H bond ASP274 and LEU156 amino acid residues and one pi-cation interaction and one hydrophobic bond with LYS276. CONCLUSION Natural compounds have always been a richest source of active compounds with a wide variety of structures, therefore, these compounds showed a special inspiration for medical chemists. The present study has aimed molecular docking and molecular dynamics simulation studies on taxifolin targeting W80R mutant protein of protein kinase B/serine- threonine kinase/AKT1 (EC:2.7.11.1) protein of ovarian cancer for designing therapeutic intervention. The expected result supported the molecular cause in a mutant form which resulted in a gain of ovarian cancer. Here we discussed validations computationally and yet experimental evaluation or in vivo studies are endorsed for further study. Several of these compounds should become the next marvels for early detection of ovarian cancer.
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Affiliation(s)
- Suchitra Maheswari Ajjarapu
- Bioinformatics Sub-DIC, Department of Molecular Biology & Genetic Engineering, College of Basic Science and Humanities, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Udham Singh Nagar, 263145, Uttarakhand, India
- Department of Biotechnology, Andhra University, Vishakhapatnam, 530003, Andhra Pradesh, India
| | - Apoorv Tiwari
- Bioinformatics Sub-DIC, Department of Molecular Biology & Genetic Engineering, College of Basic Science and Humanities, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Udham Singh Nagar, 263145, Uttarakhand, India
- Department of Computational Biology and Bioinformatics, Jacob Institute of Biotechnology and Bio-Engineering, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, Uttar Pradesh, 211007, India
| | - Gohar Taj
- Bioinformatics Sub-DIC, Department of Molecular Biology & Genetic Engineering, College of Basic Science and Humanities, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Udham Singh Nagar, 263145, Uttarakhand, India
| | - Dev Bukhsh Singh
- Department of Biotechnology, Siddharth University, Kapilvastu, Siddharth Nagar, 272202, Uttar Pradesh, India
| | - Sakshi Singh
- Department of Molecular and Human Genetics, Banaras Hindu University, Varanasi, 221005, India
| | - Sundip Kumar
- Bioinformatics Sub-DIC, Department of Molecular Biology & Genetic Engineering, College of Basic Science and Humanities, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Udham Singh Nagar, 263145, Uttarakhand, India.
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Tavsan Z, Kayali HA. Flavonoids showed anticancer effects on the ovarian cancer cells: Involvement of reactive oxygen species, apoptosis, cell cycle and invasion. Biomed Pharmacother 2019; 116:109004. [DOI: 10.1016/j.biopha.2019.109004] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/15/2019] [Accepted: 05/15/2019] [Indexed: 12/12/2022] Open
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Wang JL, Quan Q, Ji R, Guo XY, Zhang JM, Li X, Liu YG. Isorhamnetin suppresses PANC-1 pancreatic cancer cell proliferation through S phase arrest. Biomed Pharmacother 2018; 108:925-933. [PMID: 30372904 DOI: 10.1016/j.biopha.2018.09.105] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 09/03/2018] [Accepted: 09/18/2018] [Indexed: 02/07/2023] Open
Abstract
Isorhamnetin, a flavonoid ingredient derived from Vernonia anthelmintica (L.) Willd., has shown a spectrum of antitumor activity. However, the chemopreventive potential of isorhamnetin on advanced pancreatic cancer and the underlying molecular mechanism remain unknown. In the current study, treatment of the advanced pancreatic adenocarcinoma cell line PANC-1 with isorhamnetin resulted in robust cell growth arrest. PI-annexin V double staining and Hoechst 33258 staining revealed that isorhamnetin moderately induced early apoptosis without morphological alterations of nuclei. Instead, isorhamnetin caused cell cycle S-phase arrest through downregulation of cyclin A. In addition, isorhamnetin decreased the phosphorylation levels of MEK and ERK in the Ras/MAPK pathway, which is involved in regulating cell proliferation, differentiation and apoptosis. Wound-healing experiments demonstrated isorhamnetin significantly reduced the migratory behavior of PANC-1 cells. Altogether, the present study suggests that isorhamnetin may be a potential agent for prevention of pancreatic carcinoma.
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Affiliation(s)
- Jia-Li Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Qinghua Quan
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Ruifang Ji
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Xiao-Yu Guo
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Jia-Mei Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Xia Li
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
| | - Yong-Gang Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China.
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Guardado Yordi E, Matos MJ, Pérez Martínez A, Tornes AC, Santana L, Molina E, Uriarte E. In silico genotoxicity of coumarins: application of the Phenol-Explorer food database to functional food science. Food Funct 2017; 8:2958-2966. [PMID: 28745361 DOI: 10.1039/c7fo00402h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Coumarins are a group of phytochemicals that may be beneficial or harmful to health depending on their type and dosage and the matrix that contains them. Some of these compounds have been proven to display pro-oxidant and clastogenic activities. Therefore, in the current work, we have studied the coumarins that are present in food sources extracted from the Phenol-Explorer database in order to predict their clastogenic activity and identify the structure-activity relationships and genotoxic structural alerts using alternative methods in the field of computational toxicology. It was necessary to compile information on the type and amount of coumarins in different food sources through the analysis of databases of food composition available online. A virtual screening using a clastogenic model and different software, such as MODESLAB, ChemDraw and STATISTIC, was performed. As a result, a table of food composition was prepared and qualitative information from this data was extracted. The virtual screening showed that the esterified substituents inactivate molecules, while the methoxyl and hydroxyl substituents contribute to their activity and constitute, together with the basic structures of the studied subclasses, clastogenic structural alerts. Chemical subclasses of simple coumarins and furocoumarins were classified as active (xanthotoxin, isopimpinellin, esculin, scopoletin, scopolin and bergapten). In silico genotoxicity was mainly predicted for coumarins found in beer, sherry, dried parsley, fresh parsley and raw celery stalks. The results obtained can be interesting for the future design of functional foods and dietary supplements. These studies constitute a reference for the genotoxic chemoinformatic analysis of bioactive compounds present in databases of food composition.
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Affiliation(s)
- E Guardado Yordi
- Universidad de Camagüey Ignacio Agramonte Loynaz, Facultad de Ciencias Aplicadas, Cincunvalación Norte Km 5 1/2, Camagüey, Cuba. and Universidad de Santiago de Compostela, Facultad de Farmacia, Campus vida, 15782 Santiago de Compostela, Spain
| | - M J Matos
- Universidad de Santiago de Compostela, Facultad de Farmacia, Campus vida, 15782 Santiago de Compostela, Spain
| | - A Pérez Martínez
- Universidad de Camagüey Ignacio Agramonte Loynaz, Facultad de Ciencias Aplicadas, Cincunvalación Norte Km 5 1/2, Camagüey, Cuba. and Universidad Estatal Amazónica, Facultad de Ciencias de la Tierra, Km 2 1/2 vía Puyo a Tena (Paso Lateral), Puyo, Ecuador
| | - A C Tornes
- Universidad de Camagüey Ignacio Agramonte Loynaz, Facultad de Ciencias Aplicadas, Cincunvalación Norte Km 5 1/2, Camagüey, Cuba.
| | - L Santana
- Universidad de Santiago de Compostela, Facultad de Farmacia, Campus vida, 15782 Santiago de Compostela, Spain
| | - E Molina
- Universidad de Camagüey Ignacio Agramonte Loynaz, Facultad de Ciencias Aplicadas, Cincunvalación Norte Km 5 1/2, Camagüey, Cuba. and Universidad de Santiago de Compostela, Facultad de Farmacia, Campus vida, 15782 Santiago de Compostela, Spain
| | - E Uriarte
- Universidad de Santiago de Compostela, Facultad de Farmacia, Campus vida, 15782 Santiago de Compostela, Spain and Instituto de Química Aplicada, Universidad Autónoma de Chile, Pedro de Valdivia 425, 7500912 Santiago, Chile
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Bvenura C, Sivakumar D. The role of wild fruits and vegetables in delivering a balanced and healthy diet. Food Res Int 2017; 99:15-30. [PMID: 28784471 DOI: 10.1016/j.foodres.2017.06.046] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Revised: 06/17/2017] [Accepted: 06/20/2017] [Indexed: 10/19/2022]
Abstract
Without a doubt, fruits and vegetables are important components of a balanced and healthy diet. However, their consumption is very low in the world, with the lowest figures being reported in sub-Saharan Africa. The low consumption of fruits and vegetables means unbalanced and unhealthy diets, which has been linked to various diseases and conditions associated with increased mortality rates in worst cases. Poverty is the major contributor to the low consumption of fruits and vegetables in the majority of cases. However, the world, including sub-Saharan Africa, is endowed with numerous wild fruit and vegetable species which can be exploited and incorporated into the diets and help solve some nutrition related concerns. Therefore, in this review, we explore literature on wild fruits and vegetables with a special emphasis on some of the poorest regions of the world and where the lowest consumption figures are reported; their nutritional compositions; the status of their consumption and their role in the diet with a view to uncover their possible role in delivering a healthy and balanced diet as well as helping lower food and nutrition insecurity. A total of 396 articles were downloaded and analysed but only 213 were considered for this review. The results of the search indicate that wild fruits and vegetables are nutritionally rich and high in phytochemicals, especially antioxidants and therefore can possibly play a significant and positive role in delivering a healthy and balanced diet. However, the major challenge is the acceptability, accessibility as well as a lack of interest in wild fruits and vegetables and sheer neglect. People need to be educated using various forms of media on the nutritional and health benefits of these wild food plants with a view to bring them from the forest to the plate. Researchers need to channel more efforts towards domesticating them for ease of access, among other reasons. Governments need to incentivise the subsistence or commercial production of wild fruits and vegetables in order to encourage farmers to cultivate them. However, seeds and/or seedlings need to be made available and affordable to the farmers. The 'hidden treasures' in the forests in the form of edible plants could easily play a positive and huge role in delivering a balanced and healthy diet, especially in poor parts of the world.
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Affiliation(s)
- Callistus Bvenura
- Phytochemical Food Network Group, Department of Crop Sciences, Tshwane University of Technology, Pretoria West, 0001 Pretoria, South Africa.
| | - Dharini Sivakumar
- Phytochemical Food Network Group, Department of Crop Sciences, Tshwane University of Technology, Pretoria West, 0001 Pretoria, South Africa
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Ahmad A, Kaleem M, Ahmed Z, Shafiq H. Therapeutic potential of flavonoids and their mechanism of action against microbial and viral infections—A review. Food Res Int 2015. [DOI: 10.1016/j.foodres.2015.06.021] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Tee LH, Yang B, Nagendra KP, Ramanan RN, Sun J, Chan ES, Tey BT, Azlan A, Ismail A, Lau CY, Jiang Y. Nutritional compositions and bioactivities of Dacryodes species: a review. Food Chem 2014; 165:247-55. [PMID: 25038673 DOI: 10.1016/j.foodchem.2014.05.084] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 03/27/2014] [Accepted: 05/15/2014] [Indexed: 10/25/2022]
Abstract
Dacryodes species are evergreen, perennial trees with fleshy fruits and belong to the family Buseraseae. Many Dacryodes species are underutilized but are widely applied in traditional folk medicine to treat malaria, fever and skin diseases. The nutritional compositions, phytochemicals and biological activities of Dacryodes edulis, Dacryodes rostrata, Dacryodes buettneri, Dacryodes klaineana and Dacryodes hexandra are presented. The edible fruits of D. edulis are rich in lipids, proteins, vitamins, fatty acids and amino acids. Its extracts (leaf, fruit and resin) exhibit antioxidant, anti-microbial, anti-carcinogenic and other bioactivities. D. rostrata fruit has significant nutrient content, and is rich in proteins, lipids and minerals. These fruits are also highly rich in polyphenols, anthocyanins and antioxidant activities. This comprehensive review will assist the reader in understanding the nutritional benefits of Dacryodes species and in identifying current research needs.
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Affiliation(s)
- Lee Hong Tee
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor, Malaysia
| | - Bao Yang
- Key Laboratories of Plant Resources, Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Krishnamurthy Prasad Nagendra
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor, Malaysia.
| | - Ramakrishnan Nagasundara Ramanan
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor, Malaysia
| | - Jian Sun
- Institute of Agro-food Science and Technology, Guangxi Academy of Agricultural Sciences, Nanning 53007, China
| | - Eng-Seng Chan
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor, Malaysia
| | - Beng Ti Tey
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor, Malaysia
| | - Azrina Azlan
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Amin Ismail
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Cheng Yuon Lau
- Fruits and Post-Harvest Technology Section, Semongok Agriculture Research Centre, Department of Agriculture, 93720 Kuching, Sarawak, Malaysia
| | - Yueming Jiang
- Key Laboratories of Plant Resources, Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
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New antimalarial hits from Dacryodes edulis (Burseraceae)--part I: isolation, in vitro activity, in silico "drug-likeness" and pharmacokinetic profiles. PLoS One 2013; 8:e79544. [PMID: 24282507 PMCID: PMC3836662 DOI: 10.1371/journal.pone.0079544] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 09/21/2013] [Indexed: 11/19/2022] Open
Abstract
The aims of the present study were to identify the compounds responsible for the anti-malarial activity of Dacryoedes edulis (Burseraceae) and to investigate their suitability as leads for the treatment of drug resistant malaria. Five compounds were isolated from ethyl acetate and hexane extracts of D. edulis stem bark and tested against 3D7 (chloroquine-susceptible) and Dd2 (multidrug-resistant) strains of Plasmodium falciparum, using the parasite lactate dehydrogenase method. Cytotoxicity studies were carried out on LLC-MK2 monkey kidney epithelial cell-line. In silico analysis was conducted by calculating molecular descriptors using the MOE software running on a Linux workstation. The “drug-likeness” of the isolated compounds was assessed using Lipinski criteria, from computed molecular properties of the geometry optimized structures. Computed descriptors often used to predict absorption, distribution, metabolism, elimination and toxicity (ADMET) were used to assess the pharmacokinetic profiles of the isolated compounds. Antiplasmodial activity was demonstrated for the first time in five major natural products previously identified in D. edulis, but not tested against malaria parasites. The most active compound identified was termed DES4. It had IC50 values of 0.37 and 0.55 µg/mL, against 3D7 and Dd2 respectively. In addition, this compound was shown to act in synergy with quinine, satisfied all criteria of “Drug-likeness” and showed considerable probability of providing an antimalarial lead. The remaining four compounds also showed antiplasmodial activity, but were less effective than DES4. None of the tested compounds was cytotoxicity against LLC-MK2 cells, suggesting their selective activities on malaria parasites. Based on the high in vitro activity, low toxicity and predicted “Drug-likeness” DES4 merits further investigation as a possible drug lead for the treatment of malaria.
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Ottu OJ, Atawodi SE, Onyike E. Antioxidant, hepatoprotective and hypolipidemic effects of methanolic root extract of Cassia singueana in rats following acute and chronic carbon tetrachloride intoxication. ASIAN PAC J TROP MED 2013; 6:609-15. [DOI: 10.1016/s1995-7645(13)60105-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 11/15/2012] [Accepted: 12/15/2012] [Indexed: 11/17/2022] Open
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Kang KA, Zhang R, Piao MJ, Chae S, Kim HS, Park JH, Jung KS, Hyun JW. Baicalein inhibits oxidative stress-induced cellular damage via antioxidant effects. Toxicol Ind Health 2011; 28:412-21. [PMID: 21957089 DOI: 10.1177/0748233711413799] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Baicalein (5,6,7-trihydroxyflavone) is a phenolic flavonoid compound derived mainly from the root of Scutellaria baicalensis Georgi, a medicinal plant traditionally used in oriental medicine. In our previous study, baicalein attenuated mitochondrial oxidative stress by scavenging reactive oxygen species (ROS) and by induction of nuclear factor erythroid 2-related factor 2 transcription factor-mediated manganese superoxide dismutase. In the present study, the protective effects of baicalein against oxidative stress-induced damage, especially cellular components including DNA, lipid, and protein, were studied. The results of this study showed that baicalein scavenged intracellular ROS. Baicalein inhibited the H₂O₂-induced DNA damage that was demonstrated by decreased phospho-H2A.X expression and DNA tail formation. In addition, it prevented the lipid peroxidation shown by the fluorescence intensity of diphenyl-1-pyrenylphosphine and the formation of thiobarbituric acid reactive substances. Moreover, baicalein inhibited protein oxidation demonstrated by protein carbonyl formation. Furthermore, baicalein protected cells via the inhibition of apoptosis induced by H₂O₂. The findings of this study suggest that baicalein provides protection for cellular components against oxidative damage via scavenging ROS and inhibiting apoptosis.
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Affiliation(s)
- Kyoung Ah Kang
- School of Medicine and Applied Radiological Science Research Institute, Jeju National University, Jeju, Korea
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Abstract
Dietary polyphenols are antioxidants that can scavenge biological free radicals, and chemoprevent diseases with biological oxidation as their main etiological factor. In this paper, we review our laboratory data vis-ὰ-vis available literature on prostate cancer chemopreventive substances in Nigerian foodstuffs. Dacryodes edulis fruit, Moringa oleifera and Syzygium aromaticum contained prostate active polyphenols like ellagic acid, gallate, methylgallate, catechol, kaempferol quercetin and their derivatives. Also Canarium schweinfurthii Engl oil contained ten phenolic compounds and lignans, namely; catechol, p-hydroxybenzaldehyde, dihydroxyphenylacetic acid, tyrosol, p-hydroxybenzoic acid, dihydroxybenzoic acid, vanillic acid, phloretic acid, pinoresinol, secoisolariciresinol. In addition, tomatoes (Lycopersicon esculentum Mill) which contains the powerful antioxidant and anti-prostate cancer agent, lycopene; cabbage (Brassica oleracea) containing indole-3-carbinol; citrus fruits containing pectin; Soursop (Annona muricata) containing annonaceous acetogenins; soya beans (Glycine max) containing isoflavones; chilli pepper (Capsicum annuum) containing capsaicin, and green tea (Camellia sinensis) containing (-) epigallocatechin gallate (EGCG), (-) epicatechin, (-) epicatechin-3-gallate and (-) epigallocatechin -3-gallate which are widely reported to posses prostate cancer chemopreventive compounds are also grown in Nigeria and other African countries. Thus, the high incidence of prostate cancer among males of African extraction can be dramatically reduced, and the age of onset drastically increased, if the population at risk consumes the right kinds of foods in the right proportion, beginning early in life, especially as prostate cancer has a latency period of about 50 years.
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Yao H, Xu W, Shi X, Zhang Z. Dietary flavonoids as cancer prevention agents. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, ENVIRONMENTAL CARCINOGENESIS & ECOTOXICOLOGY REVIEWS 2011; 29:1-31. [PMID: 21424974 DOI: 10.1080/10590501.2011.551317] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Dietary agents identified from fruits and vegetables contribute to keeping balanced cell proliferation and preventing cell carcinogenesis. Dietary flavonoids, combined with other components such as various vitamins, play an important role in cancer prevention. Flavonoids act on reactive oxygen species, cell signal transduction pathways related to cellular proliferation, apoptosis, and angiogenesis. Many studies demonstrate that flavonoids are responsible for chemoprevention, although mechanisms of action remain to be investigated. Overall, exciting data show that dietary flavonoids could be considered as a useful cancer preventive approach. This review summarizes recent advancements on potential cancer preventive effects and mechanic insight of dietary flavonoids.
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Affiliation(s)
- Hua Yao
- Department of Stomatology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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