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Soares Ribeiro Nogueira T, Gonçalves Curcino Vieira M, Rodrigues da Silva Robaina R, Braz-Filho R, da Costa Gontijo D, Braga de Oliveira A, Curcino Vieira IJ. An update review on monoterpene indole alkaloids and biological activities of Tabernaemontana species occurring in Brazil. JOURNAL OF ETHNOPHARMACOLOGY 2024; 328:117921. [PMID: 38369065 DOI: 10.1016/j.jep.2024.117921] [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: 09/29/2023] [Revised: 01/06/2024] [Accepted: 02/15/2024] [Indexed: 02/20/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The Tabernaemontana genus belongs to the Apocynaceae family of which 30 species are found in Brazil. Some Tabernaemontana species are used by Brazilian indigenous people and other communities, or are listed in the Yanomami Pharmacopeia. Ethnopharmacological data include use(s) for muscle problems, depressed sternum, back pain, abscess, indigestion, eye irritation, earache, itching, vaginal discharge, as an aid for older people who are slow and forgetful, mosquito and snake bites, infection by the human botfly larvae, calmative, and fever. Obviously, many of these uses are attributed to the alkaloids found in Tabernaemontana species. AIM OF THE REVIEW The aim is to gather information on Tabernaemontana species occurring in Brazil, as sources of monoterpene indole alkaloids (MIAs). In addition, we aim to collect reported experimental demonstrations of their biological activity, which may provide the foundation for further studies, including phytochemistry, the development of medicinal agents, and validation of phytopreparations. MATERIAL AND METHODS The Brazilian Flora 2020 database was used as source for Tabernamontana species occurring in Brazil. The literature review on these species was collected from Web of Science, Scopus, PubMed, and Scifinder. The keywords included names and synonyms of Tabernaemontana species found in Brazil, which were validated by the Word Flora Online Plant List. RESULTS A literature survey covering the time frame from 1960 until June 2023 resulted in 121 MIAs, including 48 not yet reported in the last review published in 2016. Some alkaloid extracts, fractions, and isolated alkaloids present evidenced biological activity, such as anticancer, anti-inflammatory, antinociceptive, antimicrobial, antiparasitic, antiviral, and against snake venoms, among others. Notably, ethnopharmacological based information has been the basis of some reports on Tabernaemontana species. CONCLUSIONS Our literature survey shows that Tabernaemontana species present bioactive MIAs, such as voacamine and affinisine, demonstrating significant cytotoxicity activity against several tumoral cell lines. Those compounds can be considered promising candidates in the search for new anticancer drugs. However, the Amazonian plant biome is increasingly damaged, which may lead to the extinction of biological diversity. This threat may also affect Tabernaemontana species, which have scarcely been investigated regarding the potential of their phytochemicals for the development of new drugs.
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Affiliation(s)
- Thalya Soares Ribeiro Nogueira
- Universidade Estadual do Norte Fluminense Darcy Ribeiro, Laboratório de Ciências Químicas, Centro de Ciências e Tecnologia, Avenida Alberto Lamego, Campos dos Goytacazes, Rio de Janeiro, 28013-602, Brazil
| | - Milena Gonçalves Curcino Vieira
- Instituto Federal de Educação, Ciência e Tecnologia Fluminense, campus Campos-Centro, Rua Dr. Siqueira, 273, Parque Tamandaré, Campos dos Goytacazes, Rio de Janeiro, 28030-130, Brazil
| | - Renata Rodrigues da Silva Robaina
- Universidade Estadual do Norte Fluminense Darcy Ribeiro, Laboratório de Ciências Químicas, Centro de Ciências e Tecnologia, Avenida Alberto Lamego, Campos dos Goytacazes, Rio de Janeiro, 28013-602, Brazil
| | - Raimundo Braz-Filho
- Universidade Estadual do Norte Fluminense Darcy Ribeiro, Laboratório de Ciências Químicas, Centro de Ciências e Tecnologia, Avenida Alberto Lamego, Campos dos Goytacazes, Rio de Janeiro, 28013-602, Brazil; Universidade Federal Rural do Rio de Janeiro, Departamento de Química Orgânica, Instituto de Química, Seropédica, Rio de Janeiro, 20000-000, Brazil
| | - Douglas da Costa Gontijo
- Universidade de Brasília, Instituto de Química, Asa Norte, 70910-900, Brasília, Distrito Federal, Brazil
| | - Alaíde Braga de Oliveira
- Faculdade de Fármácia, Departamento de Produtos Farmacêuticos, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil.
| | - Ivo José Curcino Vieira
- Universidade Estadual do Norte Fluminense Darcy Ribeiro, Laboratório de Ciências Químicas, Centro de Ciências e Tecnologia, Avenida Alberto Lamego, Campos dos Goytacazes, Rio de Janeiro, 28013-602, Brazil
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Xu B, Wu H, Guo W, Hussain SA, Wang T. Voacangine mitigates oxidative stress and neuroinflammation in middle cerebral artery occlusion-induced cerebral ischemia/reperfusion injury by averting the NF-κBp65/MAPK signaling pathways in rats. ENVIRONMENTAL TOXICOLOGY 2024. [PMID: 38606816 DOI: 10.1002/tox.24274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 03/18/2024] [Accepted: 03/24/2024] [Indexed: 04/13/2024]
Abstract
Ischemic stroke is a leading cause of human mortality. Cerebral ischemia-reperfusion injury (CI/RI) is a primary cause of stroke. Ischemia-reperfusion (I/R) resulting in oxidative stress and inflammatory events may lead to severe neuronal impairments. Thus, anti-oxidative and anti-inflammatory mediators that can alleviate post-I/R neuronal injuries are required for the treatment of CI/RI. An alkaloid, voacangine (VCG) is a recognized antioxidant, anti-inflammatory, and anticancer agent. Hence, the current study intended to explore the neuroprotective potential and the principal mechanisms of VCG in CI/RI. The experimental rats were divided into four sets: control, I/R-induced, I/R + VCG (2.5 mg/kg), I/R + VCG (5 mg/kg). CI/RI was induced by implanting a thread into the middle cerebral artery occlusion (MCAO) model. Brain damages were assessed on the basis of brain edema, brain infarct volume, neurological deficit score, histopathology, oxidative stress, and neuroinflammation. Results revealed that VCG inhibited the triggering of NLRP3 inflammasome, pro-inflammatory cytokines, lipid peroxidation, but enhanced the antioxidant status in MCAO rats. Furthermore, VCG treatment averted brain damage by I/R, neuroinflammation, and oxidative stress by suppressing NF-κBp65/MAPK pathways. The results of the study provide pertinent insights pertaining to the role of VCG as a potential neuroprotective agent against ischemic stroke.
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Affiliation(s)
- Bo Xu
- Department of General Medicine, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Hua Wu
- Shaanxi Provincial Center for Diseases Control and Prevention, Xi'an, China
| | - Wei Guo
- Department of General Medicine, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Shaik Althaf Hussain
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Tian Wang
- Department of Geratology, Shaanxi Provincial People's Hospital, Xi'an, China
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da Rosa E, Stopiglia CDO, Machado MM, Filho ACD, Soci UPR, Mendez ASL, Fernandes T, de Oliveira EM, Moreira CM. Phytochemistry Profile, Antimicrobial and Antitumor Potential of the Methanolic Extract of Tabernaemontana catharinensis A DC and Eragrostis plana NEES. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2024; 2024:5513141. [PMID: 38213844 PMCID: PMC10781527 DOI: 10.1155/2024/5513141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 09/11/2023] [Accepted: 12/05/2023] [Indexed: 01/13/2024]
Abstract
Natural compounds that have the potential to act as antimicrobials and antitumors are a constant search in the field of pharmacotherapy. Eragrostis plana NEES (Poaceae) is a grass with high allelopathic potential. Allelopathy is associated with compounds generated in the primary and secondary metabolism of the plant, which act to protect it from phytopathogens. Tabernaemontana catharinensis A DC (Apocynaceae), a tree in which its leaves and bark are used for the preparation of extracts and infusions that have anti-inflammatory and antinociceptive effects, is attributed to its phytochemical constitution. The objective of this study was to elucidate the phytochemical constitution, the antibacterial potential, the toxicity against immune system cells, hemolytic potential, and antitumor effect of methanolic extracts of E. plana and T. catharinensis. The phytochemical investigation was carried out using the UHPLC-QTOF MS equipment. The antibacterial activity was tested using the broth microdilution plate assay, against Gram-negative and Gram-positive strains, and cytotoxicity assays were performed on human peripheral blood mononuclear cells (PBMC) and in vitro hemolysis. Antitumor activity was performed against the colon cancer cell line (CT26). Results were expressed as mean and standard deviation and analyzed by ANOVA. p < 0.05 was considered significant. More than 19 possible phytochemical constituents were identified for each plant, with emphasis on phenolic compounds (acids: vanillic, caffeic, and quinic) and alkaloids (alstovenine, rhyncophylline, amezepine, voacangine, and coronaridine). Both extracts showed antibacterial activity at concentrations below 500 µg/mL and were able to decrease the viability of CT26 at concentrations below 2000 µg/mL, without showing cytotoxic effect on PBMCs and in vitro hemolysis at the highest concentration tested. This is the first report of the activity of E. plana and T. catharinensis extracts against colon cancer cell line (CT26). Studies should be carried out to verify possible molecular targets involved in the antitumor effect in vivo.
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Affiliation(s)
- Emanoeli da Rosa
- Programa de Pós-Graduação em Bioquímica, Universidade Federal do Pampa-UNIPAMPA, Uruguaiana, RS, Brazil
| | | | - Michel Mansur Machado
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa-UNIPAMPA, Uruguaiana, RS, Brazil
| | - Augusto Cezar Dotta Filho
- Programa de Pós-Graduação em Bioquímica, Universidade Federal do Pampa-UNIPAMPA, Uruguaiana, RS, Brazil
| | - Ursula Paula Reno Soci
- Laboratório de Bioquímica e Biologia Molecular do Exercício, Escola de Educação Física e Esporte, Universidade de São Paulo-USP, São Paulo, SP, Brazil
| | | | - Tiago Fernandes
- Laboratório de Bioquímica e Biologia Molecular do Exercício, Escola de Educação Física e Esporte, Universidade de São Paulo-USP, São Paulo, SP, Brazil
| | - Edilamar Menezes de Oliveira
- Laboratório de Bioquímica e Biologia Molecular do Exercício, Escola de Educação Física e Esporte, Universidade de São Paulo-USP, São Paulo, SP, Brazil
| | - Cleci Menezes Moreira
- Programa de Pós-Graduação em Bioquímica, Universidade Federal do Pampa-UNIPAMPA, Uruguaiana, RS, Brazil
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Naeem A, Hu P, Yang M, Zhang J, Liu Y, Zhu W, Zheng Q. Natural Products as Anticancer Agents: Current Status and Future Perspectives. Molecules 2022; 27:molecules27238367. [PMID: 36500466 PMCID: PMC9737905 DOI: 10.3390/molecules27238367] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/22/2022] [Accepted: 11/28/2022] [Indexed: 12/02/2022] Open
Abstract
Natural products have been an invaluable and useful source of anticancer agents over the years. Several compounds have been synthesized from natural products by modifying their structures or by using naturally occurring compounds as building blocks in the synthesis of these compounds for various purposes in different fields, such as biology, medicine, and engineering. Multiple modern and costly treatments have been applied to combat cancer and limit its lethality, but the results are not significantly refreshing. Natural products, which are a significant source of new therapeutic drugs, are currently being investigated as potential cytotoxic agents and have shown a positive trend in preclinical research and have prompted numerous innovative strategies in order to combat cancer and expedite the clinical research. Natural products are becoming increasingly important for drug discovery due to their high molecular diversity and novel biofunctionality. Furthermore, natural products can provide superior efficacy and safety due to their unique molecular properties. The objective of the current review is to provide an overview of the emergence of natural products for the treatment and prevention of cancer, such as chemosensitizers, immunotherapeutics, combinatorial therapies with other anticancer drugs, novel formulations of natural products, and the molecular mechanisms underlying their anticancer properties.
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Affiliation(s)
- Abid Naeem
- Key Laboratory of Modern Preparation of Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Pengyi Hu
- Key Laboratory of Modern Preparation of Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Ming Yang
- Key Laboratory of Modern Preparation of Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Jing Zhang
- Key Laboratory of Modern Preparation of Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Yali Liu
- Key Laboratory of Pharmacodynamics and Safety Evaluation, Health Commission of Jiangxi Province, Nanchang Medical College, Nanchang 330006, China
- Key Laboratory of Pharmacodynamics and Quality Evaluation on Anti-Inflammatory Chinese Herbs, Jiangxi Administration of Traditional Chinese Medicine, Nanchang Medical College, Nanchang 330006, China
| | - Weifeng Zhu
- Key Laboratory of Modern Preparation of Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Qin Zheng
- Key Laboratory of Modern Preparation of Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China
- Correspondence:
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Machingauta A, Stevens MY, Fru CG, Sithole S, Yeboah S, Mukanganyama S. Evaluation of the antiproliferative effect of β-sitosterol isolated from Combretum platypetalum Welw. ex M.A. Lawson (Combretaceae) on Jurkat-T cells and protection by glutathione. ADVANCES IN TRADITIONAL MEDICINE 2022. [DOI: 10.1007/s13596-022-00650-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ribas LE, Baravalle ME, Gasser FB, Renna MS, Addona S, Ortega HH, Savino GH, Van de Velde F, Hein GJ. Extraction of phenolic compounds from the shells of pecan nuts with cytotoxic activity through apoptosis against the colon cancer cell line HT-29. J Food Sci 2021; 86:5409-5423. [PMID: 34730241 DOI: 10.1111/1750-3841.15950] [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: 06/25/2021] [Revised: 09/07/2021] [Accepted: 09/24/2021] [Indexed: 11/29/2022]
Abstract
The water extraction of phenolic compounds from two varieties ("Mahan" and "Marameck") of pecan nutshells (Carya illinoinensis) without and with sonication, varying the solvent/solid ratio (S), the pH, and the refluxing time (t), was studied. Additionally, the in vitro cytotoxicity and the determination of the cell death mechanism of the extracts against the colon cancer cell line HT-29 were investigated. The content of total phenolic compounds (TPC) of "Marameck" nutshells resulted higher than for the "Mahan" variety, and the pH increase resulted in higher TPC contents for both cultivars. The optimized conditions for TPC extraction without and with sonication resulted: S = 33 ml/g, pH = 12, and t = 9.6 min, and yielded ≈ 70 and 90 mg/g of TPC for "Mahan" and "Marameck" nutshells, respectively. The optimized extracts of pecan nutshells without sonication from both cultivars presented similar cytotoxicity against HT-29 colon cancer cells (IC50 ≈ 50 µg/ml), higher than for sonicated extracts (IC50 ≈ 88 and 138 µg/ml for "Mahan" and "Marameck," respectively). Cell death through apoptosis was the main mechanism of cell death induced by the nutshell extracts. PRACTICAL APPLICATION: The extraction of phenolic compounds (TPC) from the residues of two varieties of pecan nutshells ("Mahan" and "Marameck") was studied. An optimal combination of variables within the pH range that minimizes the solvent-to-solid ratio (S) and the time of refluxing (t), saving at the same time, water and energy, was set up. The phenolic compound extracts obtained from the residues of the pecan nuts exhibit cytotoxic effects against colon cancer cells and could be of interest as an alternative treatment of different types of cancer. Additionally, these extracts may be of importance to the food industry as they can be used as antioxidant agents in food formulation. Also, the high levels of anthocyanidins obtained from the pecan nut extracts after proanthocyanidins' strong acid hydrolysis can be purified and employed as natural red dyes.
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Affiliation(s)
- Lucas Emanuel Ribas
- Centro Universitario Gálvez, Universidad Nacional del Litoral, Gálvez, Santa Fe, Argentina
| | - María Eugenia Baravalle
- Centro Universitario Gálvez, Universidad Nacional del Litoral, Gálvez, Santa Fe, Argentina.,Centro de Medicina Comparada, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
| | - Fátima Belén Gasser
- Centro de Medicina Comparada, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
| | - María Sol Renna
- Centro de Medicina Comparada, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
| | - Silvina Addona
- Centro de Medicina Comparada, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
| | - Hugo Héctor Ortega
- Centro de Medicina Comparada, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
| | - Graciela Hilda Savino
- Centro Universitario Gálvez, Universidad Nacional del Litoral, Gálvez, Santa Fe, Argentina
| | - Franco Van de Velde
- Centro Universitario Gálvez, Universidad Nacional del Litoral, Gálvez, Santa Fe, Argentina.,Instituto de Tecnología de los Alimentos, Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santiago del Estero, Santa Fe, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santiago del Estero, Santa Fe, Argentina
| | - Gustavo Juan Hein
- Centro Universitario Gálvez, Universidad Nacional del Litoral, Gálvez, Santa Fe, Argentina.,Centro de Medicina Comparada, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
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Major Bioactive Alkaloids and Biological Activities of Tabernaemontana Species (Apocynaceae). PLANTS 2021; 10:plants10020313. [PMID: 33562893 PMCID: PMC7915066 DOI: 10.3390/plants10020313] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/24/2021] [Accepted: 01/29/2021] [Indexed: 01/28/2023]
Abstract
Several species belonging to the genus Tabernaemontana have been well researched and utilized for their wide-ranging biological activities. A few of the most prominent species include Tabernaemontana divaricata, Tabernaemontana catharinensis, Tabernaemontana crassa, and Tabernaemontana elegans. These species and many others within the genus often display pharmacological importance, which is habitually related to their chemical constituents. The secondary metabolites within the genus have demonstrated huge medicinal potential for the treatment of infections, pain, injuries, and various diseases. Regardless of the indispensable reports and properties displayed by Tabernaemontana spp., there remains a wide variety of plants that are yet to be considered or examined. Thus, an additional inclusive study on species within this genus is essential. The current review aimed to extensively analyze, collate, and describe an updated report of the current literature related to the major alkaloidal components and biological activities of species within the genus Tabernaemontana.
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Mondal A, Gandhi A, Fimognari C, Atanasov AG, Bishayee A. Alkaloids for cancer prevention and therapy: Current progress and future perspectives. Eur J Pharmacol 2019; 858:172472. [PMID: 31228447 DOI: 10.1016/j.ejphar.2019.172472] [Citation(s) in RCA: 131] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 06/17/2019] [Accepted: 06/18/2019] [Indexed: 12/13/2022]
Abstract
Alkaloids are important chemical compounds that serve as a rich source for drug discovery. Numerous alkaloids screened from medicinal plants and herbs showed antiproliferative and anticancer effects on wide category of cancers both in vitro and in vivo. Vinblastine, vinorelbine, vincristine, and vindesine have already been successfully developed as anticancer drugs. The available and up-to-date information on the ethnopharmacological uses in traditional medicine, phytochemistry, pharmacology and clinical utility of alkaloids were collected using various resources (PubMed, ScienceDirect, Google Scholar and Springerlink). In this article, we provide a comprehensive and critical overview on naturally-occurring alkaloids with anticancer activities and highlight the molecular mechanisms of action of these secondary metabolites. Furthermore, this review also presents a summary of synthetic derivatives and pharmacological profiles useful to researchers for the therapeutic development of alkaloids. Based on the literature survey compiled in this review, alkaloids represent an important group of anticancer drugs of plant origin with enormous potential for future development of drugs for cancer therapy and management.
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Affiliation(s)
- Arijit Mondal
- Department of Pharmacy, NSHM Knowledge Campus, Kolkata-Group of Institutions, Kolkata, 700 053, West Bengal, India.
| | - Arijit Gandhi
- Department of Pharmaceutics, Bengal College of Pharmaceutical Science and Research, Durgapur, 713 212, West Burdwan, West Bengal, India
| | - Carmela Fimognari
- Department for Life Quality Studies, Alma Mater Studiorum-University of Bologna, Corso d'Augusto 237, 47921, Rimini, Italy
| | - Atanas G Atanasov
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, 05-552, Jastrzebiec, Poland; Department of Pharmacognosy, University of Vienna, 1090, Vienna, Austria; Institute of Neurobiology, Bulgarian Academy of Sciences, 23 Acad. G. Bonchev Street, Sofia, 1113, Bulgaria
| | - Anupam Bishayee
- Lake Erie College of Osteopathic Medicine, Bradenton, FL, 34211, USA.
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Chaufan G, Galvano C, Nieves M, Mudry MD, Ríos de Molina MDC, Andrioli NB. Oxidative Response and Micronucleus Centromere Assay in HEp-2 Cells Exposed to Fungicide Iprodione. Chem Res Toxicol 2019; 32:745-752. [DOI: 10.1021/acs.chemrestox.8b00405] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gabriela Chaufan
- Laboratorio de Enzimología Estrés y Metabolismo, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Consejo de Investigaciones Científicas y Técnicas, Universidad de Buenos Aires (IQUIBICEN-CONICET), Ciudad Universitaria, Pabellón II, 4° Piso Laboratories. 43-46, C1428EGA Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Cientificas y Técnicas, Universidad de Buenos Aires, C1428EGA Buenos Aires, Argentina
| | - Camila Galvano
- GIBE (Grupo de Investigación en Biología Evolutiva), FCEyN-UBA, Facultad de Ciencias Exactas y Naturales, Instituto de Ecología, Genética y Evolución de Buenos Aires - Consejo de Investigaciones Científicas y Técnicas), Universidad de Buenos Aires (IEGEBA−CONICET), Ciudad Universitaria, Pabellón II, 4° Piso Laboratories. 43-46, C1428EGA Buenos Aires, Argentina
| | - Mariela Nieves
- GIBE (Grupo de Investigación en Biología Evolutiva), FCEyN-UBA, Facultad de Ciencias Exactas y Naturales, Instituto de Ecología, Genética y Evolución de Buenos Aires - Consejo de Investigaciones Científicas y Técnicas), Universidad de Buenos Aires (IEGEBA−CONICET), Ciudad Universitaria, Pabellón II, 4° Piso Laboratories. 43-46, C1428EGA Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Cientificas y Técnicas, Universidad de Buenos Aires, C1428EGA Buenos Aires, Argentina
| | - Marta D. Mudry
- GIBE (Grupo de Investigación en Biología Evolutiva), FCEyN-UBA, Facultad de Ciencias Exactas y Naturales, Instituto de Ecología, Genética y Evolución de Buenos Aires - Consejo de Investigaciones Científicas y Técnicas), Universidad de Buenos Aires (IEGEBA−CONICET), Ciudad Universitaria, Pabellón II, 4° Piso Laboratories. 43-46, C1428EGA Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Cientificas y Técnicas, Universidad de Buenos Aires, C1428EGA Buenos Aires, Argentina
| | - Maria del Carmen Ríos de Molina
- Laboratorio de Enzimología Estrés y Metabolismo, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Consejo de Investigaciones Científicas y Técnicas, Universidad de Buenos Aires (IQUIBICEN-CONICET), Ciudad Universitaria, Pabellón II, 4° Piso Laboratories. 43-46, C1428EGA Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Cientificas y Técnicas, Universidad de Buenos Aires, C1428EGA Buenos Aires, Argentina
| | - Nancy B. Andrioli
- GIBE (Grupo de Investigación en Biología Evolutiva), FCEyN-UBA, Facultad de Ciencias Exactas y Naturales, Instituto de Ecología, Genética y Evolución de Buenos Aires - Consejo de Investigaciones Científicas y Técnicas), Universidad de Buenos Aires (IEGEBA−CONICET), Ciudad Universitaria, Pabellón II, 4° Piso Laboratories. 43-46, C1428EGA Buenos Aires, Argentina
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Rosales PF, Marinho FF, Gower A, Chiarello M, Canci B, Roesch-Ely M, Paula FR, Moura S. Bio-guided search of active indole alkaloids from Tabernaemontana catharinensis: Antitumour activity, toxicity in silico and molecular modelling studies. Bioorg Chem 2018; 85:66-74. [PMID: 30599414 DOI: 10.1016/j.bioorg.2018.12.016] [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: 10/27/2018] [Revised: 12/05/2018] [Accepted: 12/10/2018] [Indexed: 01/21/2023]
Abstract
Active plant metabolites have been used as prototype drugs. In this context, Tabernaemontana catharinensis (Apocynaceae) has been highlighted because of the presence of active indole alkaloids. Thus, this study aims the bio-guided search of T. catharinensis cytotoxic alkaloids. The chemical composition was identified by high-resolution mass spectrometry, and fractionation was performed by open column and preparative thin-layer chromatography, from plant stems. The enriched fractions were tested in vitro in tumour cells A375 (melanoma cell line) and A549 (adenocarcinomic human alveolar basal epithelial cells), and non-tumour Vero cells (African green monkey kidney epithelial cells). The alkaloids identified as active were submitted to in silico toxicity prediction by ADME-Tox and OSIRIS programs and, also, to molecular docking, using topoisomerase I (PDB ID: 1SC7) by iGEMDOCK. As a result, six sub-fractions were obtained, which were identified as containing 16-epi-affinine, 12-methoxy-n-methyl-voachalotine, affinisine, voachalotine, coronaridine hydroxyindoline and ibogamine, respectively. The affinisine-containing sub-fraction showed selective toxicity against A375, with an IC50 of 11.73 µg mL-1, and no cytotoxicity against normal cells (Vero). From the in silico toxicity test results, all indole alkaloid compounds had a low toxicity risk. The molecular docking data provided structural models and binding affinities of the plant's indole alkaloids and topoisomerase I. In summary, this bio-guided search revealed that the indole alkaloids from T. catharinensis display selective cytotoxicity in A375 tumour cells and toxicity in silico. Particularly, affinisine might be a chemotherapeutic for A375 melanoma cells.
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Affiliation(s)
- Pauline Fagundes Rosales
- Laboratory of Biotechnology of Natural and Synthetics Products, University of Caxias do Sul, Brazil; Federal Institute of Education, Science and Technology of Rio Grande do Sul, Campus Bento Gonçalves, Brazil
| | - Flavio Ferreira Marinho
- Laboratory of Biotechnology of Natural and Synthetics Products, University of Caxias do Sul, Brazil
| | - Adriana Gower
- Laboratory of Biotechnology of Natural and Synthetics Products, University of Caxias do Sul, Brazil
| | - Marilda Chiarello
- Laboratory of Biotechnology of Natural and Synthetics Products, University of Caxias do Sul, Brazil
| | - Bianca Canci
- Laboratory of Genomics, Proteomics and DNA Repair, University of Caxias do Sul, Brazil
| | - Mariana Roesch-Ely
- Laboratory of Genomics, Proteomics and DNA Repair, University of Caxias do Sul, Brazil
| | | | - Sidnei Moura
- Laboratory of Biotechnology of Natural and Synthetics Products, University of Caxias do Sul, Brazil.
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Michalak I, Dmytryk A, Śmieszek A, Marycz K. Chemical Characterization of Enteromorpha prolifera Extract Obtained by Enzyme-Assisted Extraction and Its Influence on the Metabolic Activity of Caco-2. Int J Mol Sci 2017; 18:E479. [PMID: 28241482 PMCID: PMC5372495 DOI: 10.3390/ijms18030479] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 02/10/2017] [Accepted: 02/16/2017] [Indexed: 01/07/2023] Open
Abstract
The green seaweed Enteromorpha prolifera was used as a feedstock for the production of enzymatic hydrolysate using cellulase. The selection of the conditions for enzymatic hydrolysis of the biomass was carried out for different enzyme doses and incubation periods. The obtained extract was examined in terms of its multielemental composition, content of polyphenols and antibacterial properties (tested against Escherichia coli and Staphylococcus aureus). Additionally, its influence on the metabolic activity of human colon epithelial cells (Caco-2) was analyzed. The tested concentrations of extract using an in vitro model were 62.5, 125, 250, 500, 1000 and 2000 µg/mL. The hydrolysis yield in the most suitable experimental conditions (8-h process and 50 and 100 µL of cellulase) was 36%. Micro- and macroelements were poorly extracted from the algal biomass. Total phenolic content was 55 mg of gallic acid equivalent per 100 g of dry mass of extract. The cytotoxic effect of extracts, related to the inhibition of the metabolic activity of Caco-2, was noted only after 24 h. In turn, cultures of Caco-2 propagated with extracts for 72 h were characterized by significantly elevated metabolism (the concentration of extracts ranged from 62.5 to 1000 µg/mL, p < 0.05). Obtained results indicated the high biological activity of the prepared extracts; however, the observed effects did not occur in a dose-dependent manner.
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Affiliation(s)
- Izabela Michalak
- Department of Advanced Material Technologies, Wrocław University of Science and Technology, Smoluchowskiego 25 St., 50-372 Wrocław, Poland.
| | - Agnieszka Dmytryk
- Department of Advanced Material Technologies, Wrocław University of Science and Technology, Smoluchowskiego 25 St., 50-372 Wrocław, Poland.
| | - Agnieszka Śmieszek
- Scanning Electron Microscopy Laboratory, Wrocław University of Environmental and Life Science, Kożuchowska 5B St., 50-631 Wrocław, Poland.
| | - Krzysztof Marycz
- Scanning Electron Microscopy Laboratory, Wrocław University of Environmental and Life Science, Kożuchowska 5B St., 50-631 Wrocław, Poland.
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Gómez-Calderón C, Mesa-Castro C, Robledo S, Gómez S, Bolivar-Avila S, Diaz-Castillo F, Martínez-Gutierrez M. Antiviral effect of compounds derived from the seeds of Mammea americana and Tabernaemontana cymosa on Dengue and Chikungunya virus infections. Altern Ther Health Med 2017; 17:57. [PMID: 28100218 PMCID: PMC5241984 DOI: 10.1186/s12906-017-1562-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 01/05/2017] [Indexed: 11/25/2022]
Abstract
Background The transmission of Dengue virus (DENV) and Chikungunya virus (CHIKV) has increased worldwide, due in part to the lack of a specific antiviral treatment. For this reason, the search for compounds with antiviral potential, either as licensed drugs or in natural products, is a research priority. The objective of this study was to identify some of the compounds that are present in Mammea americana (M. americana) and Tabernaemontana cymosa (T. cymosa) plants and, subsequently, to evaluate their cytotoxicity in VERO cells and their potential antiviral effects on DENV and CHIKV infections in those same cells. Methods Dry ethanolic extracts of M. americana and T. cymosa seeds were subjected to open column chromatographic fractionation, leading to the identification of four compounds: two coumarins, derived from M. americana; and lupeol acetate and voacangine derived from T. cymosa.. The cytotoxicity of each compound was subsequently assessed by the MTT method (at concentrations from 400 to 6.25 μg/mL). Pre- and post-treatment antiviral assays were performed at non-toxic concentrations; the resulting DENV inhibition was evaluated by Real-Time PCR, and the CHIKV inhibition was tested by the plating method. The results were analyzed by means of statistical analysis. Results The compounds showed low toxicity at concentrations ≤ 200 μg/mL. The compounds coumarin A and coumarin B, which are derived from the M. americana plant, significantly inhibited infection with both viruses during the implementation of the two experimental strategies employed here (post-treatment with inhibition percentages greater than 50%, p < 0.01; and pre-treatment with percentages of inhibition greater than 40%, p < 0.01). However, the lupeol acetate and voacangine compounds, which were derived from the T. cymosa plant, only significantly inhibited the DENV infection during the post-treatment strategy (at inhibition percentages greater than 70%, p < 0.01). Conclusion In vitro, the coumarins are capable of inhibiting infection by DENV and CHIKV (with inhibition percentages above 50% in different experimental strategies), which could indicate that these two compounds are potential antivirals for treating Dengue and Chikungunya fever. Additionally, lupeol acetate and voacangine efficiently inhibit infection with DENV, also turning them into promising antivirals for Dengue fever.
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Dey A, Mukherjee A, Chaudhury M. Alkaloids From Apocynaceae. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2017. [DOI: 10.1016/b978-0-444-63931-8.00010-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Silveira D, de Melo AF, Magalhães P, Fonseca-Bazzo Y. Tabernaemontana Species: Promising Sources of New Useful Drugs. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2017. [DOI: 10.1016/b978-0-444-63929-5.00007-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Franchi L, De Souza T, Andrioli W, Lima I, Bastos J, Takahashi C. The effects of the mycotoxin austdiol on cell cycle progression, cytotoxicity and genotoxicity in Chinese hamster ovary (CHO-K1) cells. WORLD MYCOTOXIN J 2016. [DOI: 10.3920/wmj2015.1907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Austdiol is a mycotoxin mainly produced by Aspergillus ustus and Mycoleptodiscus indicus. These fungi are found in rye, oats, barley, corn and feed grains; thus, as a potential contaminant of human food and animal feed, this mycotoxin is of great concern. As such, the elucidation of the cytotoxicity and mutagenicity of austdiol is important. In this study, austdiol was purified from a rice-oat solid medium culture of M. indicus using chromatographic separation techniques. Chinese hamster ovary (CHO-K1) cells were then used to study the effect of austdiol on mammalian cell cycle, clonogenicity and DNA damage. Austdiol induced cell cycle arrest in G2/M phase, with a decreased S phase population and increased sub-G1 population. Austdiol also increased the polyploid population. These events resulted in cell death detected 7 days after treatment by clonogenic assay. DNA damage represents the main mechanism of action of austdiol, which induces DNA breaks and increases the frequency of micronuclei and nucleoplasmic bridges in binucleated cells in a CHO-K1 cell line. Moreover, cells exposed to austdiol and doxorubicin (DXR) combined treatments presented a reduced number of colonies and increased frequencies of micronuclei and nucleoplasmic bridges compared with negative control and cells treated with austdiol or DXR alone.
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Affiliation(s)
- L.P. Franchi
- Department of Genetics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Bloco G. Av. Bandeirantes 3900, 14049-900 Monte Alegre, SP, Brazil
| | - T.A.J. De Souza
- Department of Genetics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Bloco G. Av. Bandeirantes 3900, 14049-900 Monte Alegre, SP, Brazil
| | - W.J. Andrioli
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
- Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Av. Bandeirantes 3900, 14040-900 Vila Monte Alegre, SP, Brazil
| | - I.M.S. Lima
- Department of Genetics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Bloco G. Av. Bandeirantes 3900, 14049-900 Monte Alegre, SP, Brazil
| | - J.K. Bastos
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| | - C.S. Takahashi
- Department of Genetics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Bloco G. Av. Bandeirantes 3900, 14049-900 Monte Alegre, SP, Brazil
- Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Av. Bandeirantes 3900, 14040-900 Vila Monte Alegre, SP, Brazil
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Yan X, Kang H, Feng J, Yang Y, Tang K, Zhu R, Yang L, Wang Z, Cao Z. Identification of Toxic Pyrrolizidine Alkaloids and Their Common Hepatotoxicity Mechanism. Int J Mol Sci 2016; 17:318. [PMID: 26959016 PMCID: PMC4813181 DOI: 10.3390/ijms17030318] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 02/19/2016] [Accepted: 02/24/2016] [Indexed: 12/26/2022] Open
Abstract
Pyrrolizidine Alkaloids (PAs) are currently one of the most important botanical hepatotoxic ingredients. Glutathion (GSH) metabolism is the most reported pathway involved in hepatotoxicity mechanism of PAs. We speculate that, for different PAs, there should be a common mechanism underlying their hepatotoxicity in GSH metabolism. Computational methods were adopted to test our hypothesis in consideration of the limitations of current experimental approaches. Firstly, the potential targets of 22 PAs (from three major PA types) in GSH metabolism were identified by reverse docking; Secondly, glutathione S-transferase A1 (GSTA1) and glutathione peroxidase 1 (GPX1) targets pattern was found to be a special characteristic of toxic PAs with stepwise multiple linear regressions; Furthermore, the molecular mechanism underlying the interactions within toxic PAs and these two targets was demonstrated with the ligand-protein interaction analysis; Finally, GSTA1 and GPX1 were proved to be significant nodes in GSH metabolism. Overall, toxic PAs could be identified by GSTA1 and GPX1 targets pattern, which suggests their common hepatotoxicity mechanism: the interfering of detoxication in GSH metabolism. In addition, all the strategies developed here could be extended to studies on toxicity mechanism of other toxins.
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Affiliation(s)
- Xinmiao Yan
- School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
| | - Hong Kang
- School of Biomedical Informatics, University of Texas Health Science Center, Houston, TX 77030, USA.
| | - Jun Feng
- School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
| | - Yiyan Yang
- School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
| | - Kailin Tang
- School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
| | - Ruixin Zhu
- School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
| | - Li Yang
- The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Zhengtao Wang
- The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Zhiwei Cao
- School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
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Gene Expression Response of Trichophyton rubrum during Coculture on Keratinocytes Exposed to Antifungal Agents. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:180535. [PMID: 26257814 PMCID: PMC4516844 DOI: 10.1155/2015/180535] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 06/25/2015] [Indexed: 11/18/2022]
Abstract
Trichophyton rubrum is the most common causative agent of dermatomycoses worldwide, causing infection in the stratum corneum, nails, and hair. Despite the high prevalence of these infections, little is known about the molecular mechanisms involved in the fungal-host interaction, particularly during antifungal treatment. The aim of this work was to evaluate the gene expression of T. rubrum cocultured with keratinocytes and treated with the flavonoid trans-chalcone and the glycoalkaloid α-solanine. Both substances showed a marked antifungal activity against T. rubrum strain CBS (MIC = 1.15 and 17.8 µg/mL, resp.). Cytotoxicity assay against HaCaT cells produced IC50 values of 44.18 to trans-chalcone and 61.60 µM to α-solanine. The interaction of keratinocytes with T. rubrum conidia upregulated the expression of genes involved in the glyoxylate cycle, ergosterol synthesis, and genes encoding proteases but downregulated the ABC transporter TruMDR2 gene. However, both antifungals downregulated the ERG1 and ERG11, metalloprotease 4, serine proteinase, and TruMDR2 genes. Furthermore, the trans-chalcone downregulated the genes involved in the glyoxylate pathway, isocitrate lyase, and citrate synthase. Considering the urgent need for more efficient and safer antifungals, these results contribute to a better understanding of fungal-host interactions and to the discovery of new antifungal targets.
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Natural alkaloids: basic aspects, biological roles, and future perspectives. Chin J Nat Med 2015; 12:401-6. [PMID: 24969519 DOI: 10.1016/s1875-5364(14)60063-7] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Indexed: 01/08/2023]
Abstract
Natural products have gained popularity worldwide for promoting healthcare, as well as disease prevention. Alkaloids are important chemical compounds that serve as a rich reservoir for drug discovery. Several alkaloids isolated from natural herbs exhibit antiproliferation, antibacterial, antiviral, insecticidal, and antimetastatic effects on various types of cancers both in vitro and in vivo. This paper focuses on the naturally-derived alkaloids such as berberine, matrine, piperine, fritillarine, and rhynchophylline, etc., and summarizes the action mechanisms of these compounds. Based on the information in the literature that is summarized in this paper, the use of alkaloids as drugs is very promising, but more research and clinical trials are necessary before final recommendations on specific alkaloids can be made. Following this, it is hoped that as a result of this review, there will be a greater awareness of the excellent promise that natural alkaloids show for use in the therapy of diseases.
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Barbosa F, Miranda M, Rizo W, Bertoni B, Bastos J, Marins M, Fachin A. Cytotoxic activity of glycoalkaloids extract from fruits of Solanum lycocarpum A. St.-Hil. BMC Proc 2014. [PMCID: PMC4204080 DOI: 10.1186/1753-6561-8-s4-p7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Filho JDS, Matsubara EY, Franchi LP, Martins IP, Rivera LMR, Rosolen JM, Grisolia CK. Evaluation of carbon nanotubes network toxicity in zebrafish (Danio rerio) model. ENVIRONMENTAL RESEARCH 2014; 134:9-16. [PMID: 25042031 DOI: 10.1016/j.envres.2014.06.017] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 06/13/2014] [Accepted: 06/19/2014] [Indexed: 05/02/2023]
Abstract
This is a detailed in vivo study of the biological response to carbon nanotubes network as probed by the zebrafish model. First, we prepared pristine carbon nanotubes (CNTs) by methanol chemical vapor deposition in the presence of Mn and Co as catalysts, followed by purification in acid, which furnished curved tubes with diameters lying between 10 and 130 nm. The CNT network consisted of pristine CNTs dispersed in water in the presence of a surfactant. The CNT network pellets corresponded to agglomerated multi-walled CNTs with an average diameter of about 500 nm. Although the same pristine CNTs had been previously found to exert genotoxic effects in vitro, here we verified that the CNT network was not genotoxic in vivo. Indeed, Raman spectroscopy and microscopy conducted in the intestine of the zebrafish revealed complete clearance of the CNT network as well as minimal disturbances, such as aneurysms, hyperemia, and reversible inflammatory focus in the zebrafish gills.
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Affiliation(s)
- Jose de Souza Filho
- Departamento de Genética e Morfologia, Instituto de Ciências Biológicas, Universidade de Brasília, Brasilia, Brazil
| | - Elaine Y Matsubara
- Departamento de Química-FFCLRP, Universidade de São Paulo, 14040-901, Ribeirão Preto-SP, Brasil.
| | - Leonardo Pereira Franchi
- Departamento de Genética, Faculdade de Medicina de Ribeirão Preto; Universidade de São Paulo, 14049-900, Ribeirão Preto - SP - Brazil
| | - Igor Pinheiro Martins
- Departamento de Genética e Morfologia, Instituto de Ciências Biológicas, Universidade de Brasília, Brasilia, Brazil
| | - Luis Miguel Ramires Rivera
- Departamento de Genética e Morfologia, Instituto de Ciências Biológicas, Universidade de Brasília, Brasilia, Brazil
| | - José Mauricio Rosolen
- Departamento de Química-FFCLRP, Universidade de São Paulo, 14040-901, Ribeirão Preto-SP, Brasil.
| | - Cesar Koppe Grisolia
- Departamento de Genética e Morfologia, Instituto de Ciências Biológicas, Universidade de Brasília, Brasilia, Brazil
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In vitro antioxidant and cytotoxic activity of some synthetic riparin-derived compounds. Molecules 2014; 19:4595-607. [PMID: 24731987 PMCID: PMC6271893 DOI: 10.3390/molecules19044595] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 01/17/2014] [Accepted: 01/23/2014] [Indexed: 11/16/2022] Open
Abstract
This study aimed to study the in vitro antioxidant activity and cytotoxicity on tumor cells lines of six synthetic substances derived from riparins. All the substances showed antioxidant activity and riparins C, D, E, F presented cell growth inhibition rates greater than 70%, suggesting that these molecules have antitumor properties. These substances also caused greater than 80% releases of cytoplasmic lactate dehydrogenase enzyme (LDH). Although the antioxidant and antitumor properties presented herein require further assessment, the outcomes indicate that these novel riparins are promising biologically active compounds.
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