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Lopes LE, da Silva Barroso S, Caldas JK, Vasconcelos PR, Canuto KM, Dariva C, Santos KS, Severino P, Cardoso JC, Souto EB, Gomes MZ. Neuroprotective effects of Tradescantia spathacea tea bioactives in Parkinson's disease: In vivo proof-of-concept. J Tradit Complement Med 2024; 14:435-445. [PMID: 39035688 PMCID: PMC11259708 DOI: 10.1016/j.jtcme.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 01/05/2024] [Accepted: 01/07/2024] [Indexed: 07/23/2024] Open
Abstract
Background and aim Tradescantia spathacea (T. spathacea) is a traditional medicinal plant from Central America and its tea, obtained by infusion, has been recognized as a functional food. The aim of this work was to investigate the effects of dry tea containing biocompounds from T. spathacea tea on motor and emotional behavior, as well as tyrosine hydroxylase (TH) and glial fibrillary acidic protein (GFAP) expression in 6-hydroxydopamine (6-OHDA)-lesioned rats. Experimental procedure Bioactives were identified by Ultra Performance Liquid Chromatography (UPLC) and an in vivo study in male Wistar rats was run as proof of concept of neuroprotective effects of DTTS. Results and conclusion We found 15 biocompounds that had not been previously reported in T. spathacea: the UPLC-QTOF-MS/MS allowed identification five phenolic acids, one coumarin, two flavonoids, one iridoid, one phenylpropanoid glycoside, and six fatty acid derivatives. The dry tea of T. spathacea (DTTS) presented significant antioxidant activity and high contents of phenolic compounds and flavonoids. Doses of 10, 30, and 100 mg/kg of DTTS were protective against dopaminergic neurodegeneration and exhibited modulatory action on the astrocyte-mediated neuroinflammatory response. Behavioral tests showed that 30 mg/kg of DTTS counteracted motor impairment, while 100 mg/kg produced an anxiolytic effect. The DTTS could be, therefore, a promising strategy for the management of Parkinson's disease.
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Affiliation(s)
- Lorenna E.S. Lopes
- Tiradentes University (UNIT), Av. Murilo Dantas, 300, Aracaju, CEP 49032-490, Sergipe, Brazil
| | | | - Joanny K.M. Caldas
- Research and Technology Institute (ITP), Av. Murilo Dantas, 300, Aracaju, CEP 49032-490, Sergipe, Brazil
| | - Paulo R. Vasconcelos
- Embrapa Agroindústria Tropical, Rua Dra. Sara Mesquita, 2.270, Bairro Planalto do Pici, Fortaleza, CEP 60511-110, Ceará, Brazil
| | - Kirley M. Canuto
- Embrapa Agroindústria Tropical, Rua Dra. Sara Mesquita, 2.270, Bairro Planalto do Pici, Fortaleza, CEP 60511-110, Ceará, Brazil
| | - Claudio Dariva
- Tiradentes University (UNIT), Av. Murilo Dantas, 300, Aracaju, CEP 49032-490, Sergipe, Brazil
- Research and Technology Institute (ITP), Av. Murilo Dantas, 300, Aracaju, CEP 49032-490, Sergipe, Brazil
| | - Klebson S. Santos
- Research and Technology Institute (ITP), Av. Murilo Dantas, 300, Aracaju, CEP 49032-490, Sergipe, Brazil
| | - Patricia Severino
- Tiradentes University (UNIT), Av. Murilo Dantas, 300, Aracaju, CEP 49032-490, Sergipe, Brazil
- Research and Technology Institute (ITP), Av. Murilo Dantas, 300, Aracaju, CEP 49032-490, Sergipe, Brazil
| | - Juliana C. Cardoso
- Tiradentes University (UNIT), Av. Murilo Dantas, 300, Aracaju, CEP 49032-490, Sergipe, Brazil
- Research and Technology Institute (ITP), Av. Murilo Dantas, 300, Aracaju, CEP 49032-490, Sergipe, Brazil
| | - Eliana B. Souto
- Laboratory of Pharmaceutical Technology, Faculty of Pharmacy, University of Porto, Porto, 4050-313, Portugal
- UCIBIO – Applied Molecular Biosciences Unit, MEDTECH, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, 4050-313, Portugal
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Porto, 4050-313, Portugal
| | - Margarete Z. Gomes
- Tiradentes University (UNIT), Av. Murilo Dantas, 300, Aracaju, CEP 49032-490, Sergipe, Brazil
- Research and Technology Institute (ITP), Av. Murilo Dantas, 300, Aracaju, CEP 49032-490, Sergipe, Brazil
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Assessment of allelopathic activity of Tradescantia spathacea Sw. for weed control. Biol Futur 2021; 72:489-495. [PMID: 34554494 DOI: 10.1007/s42977-021-00098-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 09/01/2021] [Indexed: 10/20/2022]
Abstract
Tradescantia spathacea Sw. (Commelinaceae) is widely cultivated as an ornamental and medicinal plant in Southeast Asia, and its pharmacological properties are well known. On the other hand, this plant species is classified as an invasive weed in some countries. As a noxious weed, T. spathacea has been reported to disrupt the growth of native plants. However, no study has reported on its allelopathic activity. Thus, we investigated the allelopathic property and inhibitory substance of T. spathacea. The extracts of T. spathacea significantly inhibited the shoots and roots of alfalfa (Medicago sativa L.), cress (Lepidium sativum L.), lettuce (Lactuca sativa L.), barnyard grass (Echinochloa crus-galli (L.) P. Beauv.), Italian ryegrass (Lolium multiflorum Lam.), and timothy (Phleum pratense L.) at concentrations ≥ 3 mg dry weight (D.W.) equivalent extract/mL. As the extract concentration increased, the growth of the shoots and roots decreased. The I50 values of the test plant shoots and roots were 11.6-72.4 and 5.4-19.5 mg D.W. equivalent extract/mL, respectively. The extracts were purified by column chromatography, and an inhibitory substance was separated, which inhibited the shoots and roots of cress to 18.8 and 11.6% of control growth, respectively. The results of present findings indicate that T. spathacea extracts possess an allelopathic property, and its inhibitory substance may contribute this activity.
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Aguirre Crespo F, Pérez E, Valdovinos Estrella JG, Maldonado Velazquez M, Ortega Morales B, Crecencio P, Nuñez E, Estrada Soto S. Vasorelaxant and antioxidant activity of some medicinal plants from Campeche, Mexico. Pharmacogn Mag 2021. [DOI: 10.4103/pm.pm_291_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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Makhafola TJ, Elgorashi EE, McGaw LJ, Verschaeve L, Eloff JN. The correlation between antimutagenic activity and total phenolic content of extracts of 31 plant species with high antioxidant activity. Altern Ther Health Med 2016; 16:490. [PMID: 27899116 PMCID: PMC5129238 DOI: 10.1186/s12906-016-1437-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 10/27/2016] [Indexed: 12/04/2022]
Abstract
Background Antimutagenic activity of plant extracts is important in the discovery of new, effective cancer preventing agents. There is increasing evidence that cancer and other mutation-related diseases can be prevented by intake of DNA protective agents. The identification of antimutagenic agents present in plants presents an effective strategy to inhibit pathogenic processes resulting from exposure to mutagenic and/or carcinogenic substances present in the environment. There are no reports on the antimutagenic activities of the plant species investigated in this study. Many mutations related to oxidative stress and DNA damage by reactive oxygen species (ROS) and reactive nitrogen species (RNS) have been identified in numerous human syndromes. Oxidative DNA damage plays a significant role in mutagenesis, cancer, aging and other human pathologies. Since oxidative DNA damage plays a role in the pathogenesis of several chronic degenerative diseases, the decrease of the oxidative stress could be the best possible strategy for prevention of these diseases. Antioxidant compounds can play a preventative role against mutation-related diseases, and thus have potential antimutagenic effects. Methods The number of antioxidant compounds present in methanol leaf extracts of 120 plant species was determined using a combination of Thin Layer Chromatography (TLC) and spraying with 2, 2-diphenyl-1-picrylhydrazyl (DPPH). The 31 most promising extracts were selected for further assays. The quantitative antioxidant activity was determined using DPPH free radical scavenging spectrophotometric assay. Total phenolic contents were determined using the Folin-Ciocalteu colorimetric assay. The mutagenicity of 31 selected extracts was determined in the Ames test using Salmonella typhimurium strains TA98 and TA100. The antimutagenicity of the plant extracts against 4-nitroquinoline 1-oxide (4-NQO) was also determined using the Ames test. Results Of the 120 plant extracts assayed qualitatively, 117 had some antioxidant activity. The selected 31 extracts contained well defined antioxidant compounds. These species had good DPPH free radical antioxidant activity with EC50 values ranging from 1.20 to 19.06 μg/ml. Some of the plant extracts had higher antioxidant activity than L-ascorbic acid (vitamin C). The total phenolic contents ranged from 5.17 to 18.65 mg GAE (gallic acid equivalent)/g plant extract). The total phenolic content of the plant extracts correlated well with the respective antioxidant activity of the plant extracts. No plant extract with good antioxidant activity had mutagenic activity. Several extracts had antimutagenic activity. The percentage inhibition of 4-NQO ranged from 0.8 to 77% in Salmonella typhimurium TA98 and from 0.8 to 99% in strain TA100. There was a direct correlation between the presence of antioxidant activity and antimutagenic activity of the plant extracts. Although no plant extract had mutagenic activity on its own, some of the plant extracts enhanced the mutagenicity of 4-NQO, a phenomenon referred to as comutagenicity. Conclusions Some of the plant extracts investigated in this study had potential antimutagenic activities. The antimutagenic activities may be associated with the presence of antioxidant polyphenols in the extracts. From the results plant extracts were identified that were not mutagenic, not cytotoxic and that may be antimutagenic in the Ames test. For most plant extracts, at the highest concentration used (5 mg/ml), the level of antimutagenicity was below the recommended 45% to conclude whether plants have good antimutagenic activity. However, in most screening studies for antimutagenesis, a 20% decrease in the number of revertants must be obtained in order to score the extract as active. Psoralea pinnata L. had the highest percentage antimutagenicity recorded in this study (76.67 and 99.83% in S. typhimurium TA98 and TA100 respectively) at assayed concentration of 5 mg/ml. The results indicate that investigating antioxidant activity and the number of antioxidant compounds in plant extracts could be a viable option in searching for antimutagenic compounds in plants. Electronic supplementary material The online version of this article (doi:10.1186/s12906-016-1437-x) contains supplementary material, which is available to authorized users.
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García-Varela R, Fajardo Ramírez OR, Serna-Saldivar SO, Altamirano J, Cardineau GA. Cancer cell specific cytotoxic effect of Rhoeo discolor extracts and solvent fractions. JOURNAL OF ETHNOPHARMACOLOGY 2016; 190:46-58. [PMID: 27235722 DOI: 10.1016/j.jep.2016.05.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 05/20/2016] [Accepted: 05/21/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Traditional or folk medicine has led to the discovery of important bioactive substances used in several health-related areas. Phytochemicals in Rhoeo discolor (R. discolor) extracts have proven to have important cancer cell specific cytotoxic activity. In the present research, we determined the cytotoxic effect of extracts of R. discolor, a plant commonly used in Mexico for both medicinal and ornamental purposes. AIM OF THE STUDY We evaluated the cytotoxic effects against three representative human cancer cell lines: HT-29 colon cancer, Hep-G2 liver cancer and PC-3 prostate cancer cell lines, as well as a control fibroblast cell line NIH 3T3. MATERIALS AND METHODS Ten different crude extracts were tested along with fractions derived from the five most bioactive crude extracts. Analytical data, HPLC-MS-TOF, revealed a high content of phenolic compounds such as anthocyanins, ferulic, vanillic, chlorogenic and p-coumaric acid in the extracts. Phenolic compounds have previously been reported as health beneficial with antioxidant and potential cancer specific cytotoxic effects. RESULTS Studies revealed that low concentrations of these crude bioactive extracts (10µg/ml) and their fractions (50µg/ml) were effective as cancer specific cytotoxic agents, since they caused a significant proliferation inhibition on cancer cell lines (up to 94.2% in HT-29, 92.9% in Hep-G2 and 61.8% in PC-3 of apoptosis induction) with little harm to the control cell line (no higher than 28.3% apoptosis induction), and, importantly, the most effective extracts were mainly water, methanol and ethanol based. CONCLUSIONS These results suggest that a diet containing these compounds may function as a medical aid or chemoprotective.
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Affiliation(s)
- Rebeca García-Varela
- Centro de Biotecnología FEMSA, Tecnológico de Monterrey, Campus Monterrey, Av. Eugenio Garza Sada 2501 Sur, C.P. 64849 Monterrey, NL, México; Centro de Agrobiotecnología, Tecnológico de Monterrey, Campus Monterrey, Av. Eugenio Garza Sada 2501 Sur, C.P. 64849 Monterrey, NL, México
| | - Oscar Raúl Fajardo Ramírez
- Centro de Innovación y Transferida en Salud, Tecnológico de Monterrey, Campus Monterrey, Av. Morones Prieto No. 3000 Pte., Col. Los Doctores, C.P. 64710 Monterrey, NL, México
| | - Sergio O Serna-Saldivar
- Centro de Biotecnología FEMSA, Tecnológico de Monterrey, Campus Monterrey, Av. Eugenio Garza Sada 2501 Sur, C.P. 64849 Monterrey, NL, México; Instituto de Cardiología y Medicina Vascular, Escuela de Medicina, Tecnológico de Monterrey, Campus Monterrey, Batallón San Patricio 112 Col. Valle de San Agustín CP 66278, San Pedro Garza García, Nuevo León, México
| | - Julio Altamirano
- Instituto de Cardiología y Medicina Vascular, Escuela de Medicina, Tecnológico de Monterrey, Campus Monterrey, Batallón San Patricio 112 Col. Valle de San Agustín CP 66278, San Pedro Garza García, Nuevo León, México
| | - Guy A Cardineau
- Centro de Biotecnología FEMSA, Tecnológico de Monterrey, Campus Monterrey, Av. Eugenio Garza Sada 2501 Sur, C.P. 64849 Monterrey, NL, México; Centro de Agrobiotecnología, Tecnológico de Monterrey, Campus Monterrey, Av. Eugenio Garza Sada 2501 Sur, C.P. 64849 Monterrey, NL, México.
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Chaabane F, Mokdad-Bzeouich I, Sassi A, Mustapha N, Majouli R, Ghedira K, Chekir-Ghedira L. Genoprotective and neuroprotective effects of Daphne gnidium leaf methanol extract, tested on male mice. Drug Chem Toxicol 2015; 39:297-302. [DOI: 10.3109/01480545.2015.1107730] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Fadwa Chaabane
- Unité de Substances Naturelles Bioactives et Biotechnologie, Faculté de Pharmacie de Monastir, Université de Monastir, Monastir, Tunisia and
| | - Imen Mokdad-Bzeouich
- Unité de Substances Naturelles Bioactives et Biotechnologie, Faculté de Pharmacie de Monastir, Université de Monastir, Monastir, Tunisia and
| | - Aicha Sassi
- Unité de Substances Naturelles Bioactives et Biotechnologie, Faculté de Pharmacie de Monastir, Université de Monastir, Monastir, Tunisia and
| | - Nadia Mustapha
- Unité de Substances Naturelles Bioactives et Biotechnologie, Faculté de Pharmacie de Monastir, Université de Monastir, Monastir, Tunisia and
| | - Raja Majouli
- Unité de Substances Naturelles Bioactives et Biotechnologie, Faculté de Pharmacie de Monastir, Université de Monastir, Monastir, Tunisia and
| | - Kamel Ghedira
- Unité de Substances Naturelles Bioactives et Biotechnologie, Faculté de Pharmacie de Monastir, Université de Monastir, Monastir, Tunisia and
| | - Leila Chekir-Ghedira
- Unité de Substances Naturelles Bioactives et Biotechnologie, Faculté de Pharmacie de Monastir, Université de Monastir, Monastir, Tunisia and
- Laboratoire de Biologie Moléculaire et Cellulaire, Faculté de Médecine Dentaire de Monastir, Université de Monastir, Monastir, Tunisia
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García-Varela R, García-García RM, Barba-Dávila BA, Fajardo-Ramírez OR, Serna-Saldívar SO, Cardineau GA. Antimicrobial Activity of Rhoeo discolor Phenolic Rich Extracts Determined by Flow Cytometry. Molecules 2015; 20:18685-703. [PMID: 26473824 PMCID: PMC6331916 DOI: 10.3390/molecules201018685] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 09/07/2015] [Accepted: 09/18/2015] [Indexed: 11/22/2022] Open
Abstract
Traditional medicine has led to the discovery of important active substances used in several health-related areas. Phytochemicals in Rhoeo discolor extracts have proven to have important antimicrobial activity. In the present study, our group determined the antimicrobial effects of extracts of Rhoeo discolor, a plant commonly used in Mexico for both medicinal and ornamental purposes. We evaluated the in vitro activity of phenolic rich extracts against specifically chosen microorganisms of human health importance by measuring their susceptibility via agar-disc diffusion assay and flow cytometry: Gram-positive Listeria innocua and Streptococcus mutans, Gram-negative Escherichia coli and Pseudomonas aeruginosa, and lastly a fungal pathogen Candida albicans. Ten different extracts were tested in eight different doses on all the microorganisms. Analytical data revealed a high content of phenolic compounds. Both agar-disc diffusion assay and flow cytometry results demonstrated that Pseudomonas aeruginosa was the least affected by extract exposure. However, low doses of these extracts (predominantly polar), in a range from 1 to 4 μg/mL, did produce a statistically significant bacteriostatic and bactericidal effect on the rest of the microorganisms. These results suggest the addition of certain natural extracts from Rhoeo discolor could act as antibacterial and antimycotic drugs or additives for foods and cosmetics.
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Affiliation(s)
- Rebeca García-Varela
- Centro de Biotecnología FEMSA, Tecnologico de Monterrey, Campus Monterrey, Ave Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico.
- Centro de Agrobiotecnología, Tecnologico de Monterrey, Campus Monterrey, Ave Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico.
| | - Rebeca M García-García
- Centro de Biotecnología FEMSA, Tecnologico de Monterrey, Campus Monterrey, Ave Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico.
| | - Bertha A Barba-Dávila
- Centro de Biotecnología FEMSA, Tecnologico de Monterrey, Campus Monterrey, Ave Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico.
| | - Oscar R Fajardo-Ramírez
- Centro de Innovación y Transferida en Salud, Escuela de Medicina, Tecnologico de Monterrey, Campus Monterrey, Ave Morones Prieto No. 3000 Pte., Col. Los Doctores, C.P. Monterrey 64710, N.L., Mexico.
| | - Sergio O Serna-Saldívar
- Centro de Biotecnología FEMSA, Tecnologico de Monterrey, Campus Monterrey, Ave Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico.
| | - Guy A Cardineau
- Centro de Biotecnología FEMSA, Tecnologico de Monterrey, Campus Monterrey, Ave Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico.
- Centro de Agrobiotecnología, Tecnologico de Monterrey, Campus Monterrey, Ave Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico.
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Vo QH, Nguyen PH, Zhao BT, Ali MY, Choi JS, Min BS, Nguyen TH, Woo MH. Protein tyrosine phosphatase 1B (PTP1B) inhibitory constituents from the aerial parts of Tradescantia spathacea Sw. Fitoterapia 2015; 103:113-21. [DOI: 10.1016/j.fitote.2015.03.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 03/14/2015] [Accepted: 03/17/2015] [Indexed: 01/22/2023]
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Arvinder K, Davinder K, Saroj A. Evaluation of antioxidant and antimutagenic potential of Justicia adhatoda leaves extract. ACTA ACUST UNITED AC 2015. [DOI: 10.5897/ajb2015.14486] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Tan JBL, Yap WJ, Tan SY, Lim YY, Lee SM. Antioxidant Content, Antioxidant Activity, and Antibacterial Activity of Five Plants from the Commelinaceae Family. Antioxidants (Basel) 2014; 3:758-69. [PMID: 26785239 PMCID: PMC4665499 DOI: 10.3390/antiox3040758] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 10/27/2014] [Accepted: 11/03/2014] [Indexed: 11/16/2022] Open
Abstract
Commelinaceae is a family of herbaceous flowering plants with many species used in ethnobotany, particularly in South America. However, thus far reports of their bioactivity are few and far between. The primary aim of this study was to quantify the antioxidant and antibacterial activity of five Commelinaceae methanolic leaf extracts. The antioxidant content was evaluated by the total phenolic content (TPC), total tannin content (TTC), and total flavonoid content (TFC) assays. The antioxidant activities measured were DPPH free radical scavenging (FRS), ferric reducing power (FRP), and ferrous ion chelating (FIC); of the five plants, the methanolic leaf extract of Tradescantia zebrina showed the highest antioxidant content and activity, and exhibited antibacterial activity against six species of Gram-positive and two species of Gram-negative bacteria in a range of 5-10 mg/mL based on the broth microdilution method.
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Affiliation(s)
- Joash Ban Lee Tan
- School of Science, Monash University Sunway Campus, Bandar Sunway 46150, Malaysia.
| | - Wei Jin Yap
- School of Science, Monash University Sunway Campus, Bandar Sunway 46150, Malaysia.
| | - Shen Yeng Tan
- School of Science, Monash University Sunway Campus, Bandar Sunway 46150, Malaysia.
| | - Yau Yan Lim
- School of Science, Monash University Sunway Campus, Bandar Sunway 46150, Malaysia.
| | - Sui Mae Lee
- School of Science, Monash University Sunway Campus, Bandar Sunway 46150, Malaysia.
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Antimutagenicity of Methanolic Extracts from Anemopsis californica in Relation to Their Antioxidant Activity. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:273878. [PMID: 25152760 PMCID: PMC4135139 DOI: 10.1155/2014/273878] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 06/24/2014] [Indexed: 12/05/2022]
Abstract
Anemopsis californica has been used empirically to treat infectious diseases. However, there are no antimutagenic evaluation reports on this plant. The present study evaluated the antioxidant activity in relation to the mutagenic and antimutagenic activity properties of leaf (LME) and stem (SME) methanolic extracts of A. californica collected in the central Mexican state of Querétaro. Antioxidant properties and total phenols of extracts were evaluated using DPPH (1,1-diphenyl-2-picrylhydrazyl) and Folin-Ciocalteu methods, respectively. Mutagenicity was evaluated using the Ames test employing Salmonella enterica serovar Typhimurium strains (TA98, TA100, and TA102), with and without an aroclor 1254 (S9 mixture). Antimutagenesis was performed against mutations induced on the Ames test with MNNG, 2AA, or 4NQO. SME presented the highest antioxidant capacity and total phenolic content. None of the extracts exhibited mutagenicity in the Ames test. The extracts produced a significant reduction in 2AA-induced mutations in S. typhimurium TA98. In both extracts, mutagenesis induced by 4NQO or methyl-N′-nitro-N-nitrosoguanidine (MNNG) was reduced only if the exposure of strains was <10 μg/Petri dish. A. californca antioxidant properties and its capacity to reduce point mutations render it suitable to enhance medical cancer treatments. The significant effect against antimutagenic 2AA suggests that their consumption would provide protection against carcinogenic polycyclic aromatic compounds.
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Tan JBL, Lim YY, Lee SM. Rhoeo spathacea (Swartz) Stearn leaves, a potential natural food colorant. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.01.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Wang LC, Yu YQ, Fang M, Zhan CG, Pan HY, Wu YN, Gong ZY. Antioxidant and antigenotoxic activity of bioactive extracts from corn tassel. ACTA ACUST UNITED AC 2014; 34:131-136. [DOI: 10.1007/s11596-014-1244-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/26/2013] [Indexed: 01/17/2023]
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Márquez-Aguirre AL, Camacho-Ruiz RM, Arriaga-Alba M, Padilla-Camberos E, Kirchmayr MR, Blasco JL, González-Avila M. Effects of Agave tequilana fructans with different degree of polymerization profiles on the body weight, blood lipids and count of fecal Lactobacilli/Bifidobacteria in obese mice. Food Funct 2014; 4:1237-44. [PMID: 23759883 DOI: 10.1039/c3fo60083a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Fructans are dietary fibers with beneficial effects on the gastrointestinal physiology and offer a promising approach for the treatment of some metabolic disorders associated with obesity. In vitro and in vivo studies were developed to test the safety of fructans obtained from Agave tequilana Weber var. azul. Additionally, an in vivo experiment using a diet-induced obesity model was performed to compare the effect of agave fructans with different degree of polymerization (DP) profiles: agave fructans with DP > 10 (LcF), agave FOS with DP < 10 (ScF), and agave fructans with and without demineralization (dTF, TF) versus commercial chicory fructans (OraftiSynergy1™) on the body weight change, fat, total cholesterol, triglycerides and count of fecal Lactobacillus spp. and Bifidobacterium spp. Results showed that A. tequilana fructans were not mutagenic and were safe even at a dose of 5 g per kg b.w. Obese mice that received ScF showed a significant decrease in body weight gain, fat tissue and total cholesterol without increasing the count of fecal Bifidobacteria. Whereas, obese mice that received LcF and TF showed decreased triglycerides and an increased count of fecal Bifidobacteria. Interestingly, although obese mice that received dTF did not show changes in body weight gain, fat tissue, total cholesterol or triglycerides, they showed an increase in the count of Bifidobacteria. These results demonstrate that both the degree of polymerization and the demineralization process can influence the biological activity of agave fructans.
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Affiliation(s)
- Ana Laura Márquez-Aguirre
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A. C, Av. Normalistas No 800, Col. Colinas de la Normal, 44270 Guadalajara, Jalisco, Mexico
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Antioxidant and antibacterial activity of Rhoeo spathacea (Swartz) Stearn leaves. Journal of Food Science and Technology 2013; 52:2394-400. [PMID: 25829624 DOI: 10.1007/s13197-013-1236-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 11/27/2013] [Accepted: 12/11/2013] [Indexed: 12/13/2022]
Abstract
The decoction and infusion of Rhoeo spathacea (Swartz) Stearn leaves have been recognized as a functional food particularly in South America, but has not yet gained international popularity as a beverage. The primary aim of this study was to establish the viability of R. spathacea aqueous leaf extracts as a beverage, in terms of its antioxidant activity and antibacterial activity. The antioxidant contents of aqueous and methanol leaf extracts were evaluated by the total phenolic content (TPC) and total flavonoid content (TFC) assays. The antioxidant activities measured were DPPH radical scavenging activity (FRS), ferric reducing power (FRP) and ferrous ion chelating (FIC) activity. The aqueous leaf extracts in the forms of decoction and infusion, were found to have comparable TPC and antioxidant activity with other herbal teas previously reported by our research group. Both decoction and infusion also exhibited antibacterial activity against six species of Gram positive and four species of Gram negative bacteria, notably methicillin-resistant Staphylococcus aureus and Neisseria gonorrhoeae. A total of four different known phenolic compounds were identified by HPLC and MS, three of which have not been previously reported to be found in this plant. Both the decoction and infusion of the leaves R. spathacea have potential to be popularized into a common beverage.
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Ajiboye TO, Yakubu MT, Oladiji AT. Cytotoxic, antimutagenic, and antioxidant activities of methanolic extract and chalcone dimers (lophirones B and C) derived from Lophira alata (Van Tiegh. Ex Keay) stem bark. J Evid Based Complementary Altern Med 2013; 19:20-30. [PMID: 24647375 DOI: 10.1177/2156587213505112] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The cytotoxic, antimutagenic, and antioxidant activities of methanolic extract and lophirones B and C derived from Lophira alata stem bark were evaluated. The extract and lophirones B and C significantly (P < .05) reduced the viability of Ehrlich ascites carcinoma cells. There were concentration-dependent reduction in 4-nitro-o-aminophenylenediamine and benzo[a]pyrene-induced frame shift mutation as well as aflatoxin B1-induced base pair substitution by the extract and lophirones B and C. The extract and lophirones B and C concentration dependently scavenged DPPH radical, superoxide anion radical, hydrogen peroxide, hydroxyl radicals, and reduced ferric ion in the potassium hexacyanoferrate III reducing system. The results obtained from this study revealed that methanolic extract and lophirones B and C derived from Lophira alata stem bark posses anticancer, antimutagenic, and antioxidant activities, with lophirone C producing the best anticancer, antimutagenic, and antioxidant activities. The acclaimed anticancer activity of Lophira alata may be attributed to lophirones B and C.
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Arriaga-Alba M, Rios MY, Déciga-Campos M. Antimutagenic properties of affinin isolated from Heliopsis longipes extract. PHARMACEUTICAL BIOLOGY 2013; 51:1035-1039. [PMID: 23738801 DOI: 10.3109/13880209.2013.775161] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
CONTEXT Heliopsis longipes (A. Gray) Blake (Asteraceae), commonly known in Mexico as "chilcuage" or "chilcuan", is widely used as an analgesic and anesthetic agent. Affinin, the major metabolite of this plant, and the ethanol extract of the plant have shown antinociceptive properties in mice. H. longipes plant produces a complex mixture of antioxidant chlorophylls and polyamines as well as a number of possible antimutagens. OBJECTIVE The current study evaluated the potential utilization of the natural product affinin isolated from H. longipes ethanol extract as an antimutagenic and possibly anticarcinogenic agent. MATERIALS AND METHODS The Ames assay was used to assess the mutagenic properties of affinin (12.5, 25 and 50 µg/plate) that was added to several mutagens with or without S9 metabolic activation in Salmonella typhimurium (TA98, TA100 and TA102 strains). RESULTS Heliopsis longipes extract and affinin were not toxic as a reduction in the number of His⁺ revertant bacteria colonies. Affinin (25 and 50 µg/plate) significantly reduced the frameshift mutations that were generated by 2-aminoanthracene (2AA) (40%) and reduced the oxidative DNA damage generated by norfloxacin (NOR) (37-50%). Affinin possessed antioxidant properties that were able to reduce 2AA- and NOR-induced mutations in S. typhimurium TA98 and TA102, respectively. DISCUSSION AND CONCLUSION Affinin, the principal metabolite of H. longipes, is not mutagenic and possesses antimutagenic activity. These plants are currently used to treat some pain symptoms in Mexico; and antimutagen activity determined could be important to treat some pain symptoms related to antiradical activity.
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Affiliation(s)
- Myriam Arriaga-Alba
- Laboratorio de Investigación en Microbiología, Dirección de Investigación y Enseñanza, Hospital Juárez de México, Av. Instituto Politécnico Nacional, 5160 México D.F., México
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Barbosa LC, Dias de Morais M, de Paula CA, da Silva Ferreira MC, Jordao AA, Andrade e Silva ML, Kenupp Bastos J, da Silva Filho AA, de Oliveira Cecchi A. Mikania glomerata Sprengel (Asteraceae) influences the mutagenicity induced by doxorubicin without altering liver lipid peroxidation or antioxidant levels. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2012; 75:1102-1109. [PMID: 22852859 DOI: 10.1080/15287394.2012.697842] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
As shown in numerous studies, natural compounds may exert adverse effects, mainly when associated with some drugs. The hydroalcoholic extract of Mikania glomerata is the pharmaceutical form present in commercially available syrup used for the treatment of respiratory diseases in popular Brazilian medicine. The objective of the present investigation was (1) to evaluate the preventive effects of standardized hydroalcoholic extract of M. glomerata (MEx) against antitumoral drug doxorubicin (DXR)-induced micronucleated polychromatic erythrocytes (MNPCE) in a subchronic assay in mice, and (2) to determine the liver content of malondialdehyde (MDA) and the antioxidants glutathione (GSH) and vitamin E (VE). Male Swiss mice were treated for 30 d with MEx added to drinking water, combined or not with DXR (90 mg/kg body weight) injected intraperitoneally (ip) 24 h before analysis. The results demonstrated that MEx produced no genotoxic damage, but significantly increased the frequency of MNPCE induced by DXR, indicating a drug-drug interaction. This rise was not accompanied by lipid peroxidation or antioxidants level reduction, as measured by MDA, GSH, and VE. Despite the presence of coumarin (a known antioxidant), MEx may exert adverse effects probably in association with mutagenic compounds, although this effect on DNA damage did not involve oxidative stress.
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Correlation between antibutyrylcholinesterasic and antioxidant activities of three aqueous extracts from Tunisian Rhus pentaphyllum. Ann Clin Microbiol Antimicrob 2011; 10:32. [PMID: 21880140 PMCID: PMC3224538 DOI: 10.1186/1476-0711-10-32] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2011] [Accepted: 08/31/2011] [Indexed: 11/27/2022] Open
Abstract
For centuries, plants have been used in traditional medicines and there has been recent interest in the chemopreventive properties of compounds derived from plants. In the present study, we investigated the antibutyrylcholinestrasic (anti-BuChE) and antioxidant (against some free radicals) activities of extracts from Rhus pentaphyllum. Aqueous extracts were prepared from powdered R. pentaphyllum roots, leaves and seeds and characterized for the presence of tannins, flavonoids and coumarins. Seeds aqueous extract contained the highest quantities of both flavonoids and tannins (21.12% and 17.45% respectively). In the same way, seeds extracts displayed remarkable inhibition against BuChE over 95%, at 100 μg/ml and with IC50 0.74 μg/ml. In addition, compared to leaves and roots extracts, seeds aqueous extract revealed relatively strong antiradical activity towards the ABTS.+ (IC50 = 0.25 μg/ml) and DPPH (IC50 = 2.71 μg/ml) free radicals and decreased significantly the reactive oxygen species such O2.- (IC50 = 2.9 μg/ml) formation evaluated by the non-enzymatic generating O2.- system (Nitroblue tetrazolium/riboflavine). These data suggest that the anti-BuChE activities mechanism of these extracts occurs through a free radical scavenging capacities. The present study indicates that extracts of Rhus pentaphyllum leaves, seeds and roots are a significant source of compounds, such as tannins, flavonoids and coumarins, with anti-BuChE and antioxidant activities, and thus may be useful for chemoprevention.
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Myriam AA, José Luis B, Nancy Jannete RP, Jaime SN, Roberto RS, Marisela GA. Antimutagenicity mechanisms of the Rhoeo discolor ethanolic extract. ACTA ACUST UNITED AC 2011; 63:243-8. [DOI: 10.1016/j.etp.2010.01.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Revised: 12/05/2009] [Accepted: 01/03/2010] [Indexed: 11/24/2022]
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Ben Sghaier M, Boubaker J, Skandrani I, Bouhlel I, Limem I, Ghedira K, Chekir-Ghedira L. Antimutagenic, antigenotoxic and antioxidant activities of phenolic-enriched extracts from Teucrium ramosissimum: combination with their phytochemical composition. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2011; 31:220-232. [PMID: 21787689 DOI: 10.1016/j.etap.2010.11.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 10/28/2010] [Accepted: 11/01/2010] [Indexed: 05/31/2023]
Abstract
The evaluation of the mutagenic and antimutagenic actions of extracts obtained from aerial part of Teucrium ramosissimum was assayed using the Salmonella typhimurium assay system. The effect of the same extracts on genotoxicity and SOS response induced by aflatoxin B(1) as well as nitrofurantoin was investigated in a bacterial assay system, i.e., the SOS chromotest with Escherichia coli PQ37. The different extracts showed no mutagenicity when tested with Salmonella typhimurium strains TA100, TA98 and TA1535 either with or without S9 mix. In contrast, our results prove that T. ramosissimum extracts possess antimutagenic effects against sodium azide, aflatoxin B1, benzo[a]pyrene and 4-nitro-o-phenylenediamine. Moreover, the T. ramosissimum tested extracts exhibited no genotoxicity either with or without the external S9 activation mixtures. However, all the extracts significantly decreased the genotoxicity induced by aflatoxin B(1) and nitrofurantoin. The result obtained by the Ames test confirms those of SOS chromotest. Antioxidant capacity of the tested extracts was evaluated using the enzymatic (xanthine/xanthine oxidase assay) and the non enzymatic (NBT/riboflavine, DPPH and ABTS assays) systems. All extracts exhibited high antioxidant activity except the chloroform and the methanol extracts in DPPH and NBT/riboflavine assays respectively. Our results underline the potential of T. ramosissimum to avoid mutations and also its antioxidant potential.
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Affiliation(s)
- M Ben Sghaier
- Department of Pharmacognosy, Faculty of Pharmacy, Rue Avicenne, Monastir 5000, Tunisia
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Vilar JB, D'Oliveira MIP, Santos SDC, Chen LC. Cytotoxic and genotoxic investigation on barbatimão [Stryphnodendron adstringens (Mart: ) Coville, 1910] extract. BRAZ J PHARM SCI 2010. [DOI: 10.1590/s1984-82502010000400010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Stryphnodendron adstringens (Mart.) Coville, 1910 is a small tree, distributed widely throughout the Cerrado region of Brazil and named "barbatimão" by the Tupi-Guarani tribes, which presents astringent properties. Its ethnopharmacological uses comprise, among others, anti-inflammatory and wound healing action, and it is used in the treatment of diarrhea and gynecological problems. The phytotherapeutic use of 'barbatimão' is largely related to its tannin content, which is abundant in its bark. The main goal of the present study was to evaluate the cytotoxic, mutagenic, and genotoxic potential of the lyophilized solution of the stem bark of S. adstringens, using the Ames test, the SOS-Inductest and the SOS-Chromotest. S. adstringens presented cytotoxic activity in all tested systems, did not present mutagenic activity detectable by the Ames test and SOS-Chromotest, and showed some genotoxic effect on the SOS-Inductest. However, the metabolization of the extract by S9 fraction attenuated its genotoxic and cytotoxic activities.
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Chemical investigation of different crude extracts from Teucrium ramosissimum leaves. Correlation with their antigenotoxic and antioxidant properties. Food Chem Toxicol 2010; 49:191-201. [PMID: 20965226 DOI: 10.1016/j.fct.2010.10.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 09/20/2010] [Accepted: 10/13/2010] [Indexed: 11/23/2022]
Abstract
The effect of extracts obtained from Teucrium ramosissimum leaves on genotoxicity and SOS response induced by aflatoxin B(1) (0.5 μg/assay) as well as nitrofurantoin (5 μg/assay) was investigated in a bacterial assay system, i.e., the SOS chromotest with Escherichia coli PQ37. The T. ramosissimum tested extracts exhibited no genotoxicity either with or without the external S9 activation mixture. However, all the extracts, particularly the total oligomers flavonoids (TOF) extract significantly decreased the genotoxicity induced by aflatoxin B(1) and nitrofurantoin. Antioxidant capacity of the tested extracts was evaluated using the enzymatic (xanthine/xanthine oxidase assay) (X/XOD) and the non-enzymatic (NBT/Riboflavine assay) systems. TOF extract was the most effective one in inhibiting both xanthine oxidase activity and NBT reduction. Our findings emphasize the potential of T. ramosissimum to prevent mutations and also its antioxidant effect.
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Limem I, Bouhlel I, Bouchemi M, Kilani S, Boubaker J, Ben-Sghaier M, Skandrani I, Behouri W, Neffati A, Ghedira K, Chekir-Ghedira L. Phlomis mauritanica Extracts Reduce the Xanthine Oxidase Activity, Scavenge the Superoxide Anions, and Inhibit the Aflatoxin B1-, Sodium Azide-, and 4-Nitrophenyldiamine-Induced Mutagenicity in Bacteria. J Med Food 2010; 13:717-24. [DOI: 10.1089/jmf.2008.0299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ilef Limem
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Ines Bouhlel
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Meriem Bouchemi
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Soumaya Kilani
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Jihed Boubaker
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Mohamed Ben-Sghaier
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Ines Skandrani
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Wissem Behouri
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Aicha Neffati
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Kamel Ghedira
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
| | - Leila Chekir-Ghedira
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, Monastir, Tunisia
- Unity of Pharmacognosy/Molecular Biology 99/UR/07-03, Faculty of Pharmacy, Monastir, Tunisia
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Reyes-Munguía A, Azúara-Nieto E, Beristain CI, Cruz-Sosa F, Vernon-Carter EJ. Propiedades antioxidantes del maguey morado (Rhoeo discolor) Purple maguey (Rhoeo discolor) antioxidant properties. CYTA - JOURNAL OF FOOD 2009. [DOI: 10.1080/19476330903010177] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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de Oliveira AM, dos Santos AG, dos Santos RA, Csipak AR, Olivato C, da Silva IC, de Freitas MB, Bassi CL, Cavalheiro AJ, Bolzani VS, Silva DHS, Sakamoto-Hojo ET, Takahashi CS, Soares CP. Ethanolic extract of Casearia sylvestris and its clerodane diterpen (caseargrewiin F) protect against DNA damage at low concentrations and cause DNA damage at high concentrations in mice's blood cells. Mutagenesis 2009; 24:501-6. [DOI: 10.1093/mutage/gep034] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Dellai A, Mansour HB, Limem I, Bouhlel I, Sghaier MB, Boubaker J, Ghedira K, Chekir-Ghedira L. Screening of antimutagenicity via antioxidant activity in different extracts from the flowers ofPhlomis crinita Cav. ssp mauritanica munbyfrom the center of Tunisia. Drug Chem Toxicol 2009; 32:283-92. [DOI: 10.1080/01480540902882200] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Bouhlel I, Bhouri W, Limem I, Boubaker J, Nefatti A, Skandrani I, Ben Sghaier M, Kilani S, Ghedira K, Chekir Ghedira L. Cell protection induced by Acacia salicina extracts: inhibition of genotoxic damage and determination of its antioxidant capacity. Drug Chem Toxicol 2009; 32:139-49. [PMID: 19514950 DOI: 10.1080/01480540802593899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Antioxidant activity of Acacia salicina extracts was determined by the ability of each extract to inhibit lipid peroxidation, to protect against DNA strand scission induced by hydroxyl radicals, and to scavenge the free radical, 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS(*+)). The IC(50) values of the inhibitory activity toward lipid peroxidation of total oligomer flavonoids (TOF), methanol, ethyl acetate, and aqueous extracts were respectively 28, 52, 472, and 480 microg/mL. All extracts have the ability to scavenge the ABTS(*+) radical by a hydrogen-donating mechanism and to protect pKS plasmid DNA against hydroxyl radicals- induced DNA damage. An assay for the ability of A. salicina extracts to prevent mutations induced by various mutagens in Salmonella typhimurium TA102 and TA104 cells was conducted. TOF, methanol, ethyl acetate, and aqueous extracts from leaf parts of A. salicina showed no mutagenicity either with or without the metabolic enzymes preparation (S9). Protection against methylmethanesulfonate-induced mutagenicity was observed for TOF, methanol, and ethyl acetate extracts. Likewise, all extracts exhibited a high inhibition level of the Ames response induced by the indirect mutagen, 2-aminoanthracene. The antigenotoxic activity could be ascribed, at least in part, to their antioxidant properties, but we cannot exclude additionally mechanisms. Thus, A. salicina may serve as an ideal candidate for a cost- effective, readily exploitable natural phytochemical compound.
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Affiliation(s)
- Ines Bouhlel
- Unité de Pharmacognosie/Biologie Moléculaire (99/UR/07-03), Faculté de Pharmacie de Monastir, Monastir, Tunisia
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Tasduq SA, Kaiser PJ, Gupta BD, Gupta VK, Johri RK. Negundoside, an iridiod glycoside from leaves of Vitex negundo, protects human liver cells against calcium-mediated toxicity induced by carbon tetrachloride. World J Gastroenterol 2008; 14:3693-709. [PMID: 18595136 PMCID: PMC2719232 DOI: 10.3748/wjg.14.3693] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the protective effect of 2'-p-hydroxybenzoylmussaenosidic acid [negundoside (NG), against carbon tetrachloride (CCl4)-induced toxicity in HuH-7 cells.
METHODS: CCl4 is a well characterized hepatotoxin, and inducer of cytochrome P450 2E1 (CYP2E1)-mediated oxidative stress. In addition, lipid peroxidation and accumulation of intracellular calcium are important steps in the pathway involved in CCl4 toxicity. Liver cells (HuH-7) were treated with CCl4, and the mechanism of the cytoprotective effect of NG was assessed. Silymarin, a known hepatoprotective drug, was used as control.
RESULTS: NG protected HuH-7 cells against CCl4 toxicity and loss of viability without modulating CYP2E1 activity. Prevention of CCl4 toxicity was associated with a reduction in oxidative damage as reflected by decreased generation of reactive oxygen species (ROS), a decrease in lipid peroxidation and accumulation of intracellular Ca2+ levels and maintenance of intracellular glutathione homeostasis. Decreased mitochondrial membrane potential (MMP), induction of caspases mediated DNA fragmentation and cell cycle arrest, as a result of CCl4 treatment, were also blocked by NG. The protection afforded by NG seemed to be mediated by activation of cyclic adenosine monophosphate (cAMP) synthesis and inhibition of phospholipases (cPLA2).
CONCLUSION: NG exerts a protective effect on CYP2E1-dependent CCl4 toxicity via inhibition of lipid peroxidation, followed by an improved intracellular calcium homeostasis and inhibition of Ca2+-dependent proteases.
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Ammar RB, Sghaier MB, Boubaker J, Bhouri W, Naffeti A, Skandrani I, Bouhlel I, Kilani S, Ghedira K, Chekir-Ghedira L. Antioxidant activity and inhibition of aflatoxin B1-, nifuroxazide-, and sodium azide-induced mutagenicity by extracts from Rhamnus alaternus L. Chem Biol Interact 2008; 174:1-10. [PMID: 18511029 DOI: 10.1016/j.cbi.2008.04.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2008] [Revised: 03/31/2008] [Accepted: 04/08/2008] [Indexed: 10/22/2022]
Abstract
The effect of extracts obtained from Rhamnus alaternus L. leaves on genotoxicity and SOS response induced by aflatoxin B(1) (10 microg/assay) as well as nifuroxazide (20 microg/assay) was investigated in a bacterial assay system, i.e., the SOS chromotest with Escherichia coli PQ37. The evaluation of the mutagenic and antimutagenic actions of the same extracts against the sodium azide (1.5 microg/plate)-induced mutagenicity was assayed using the Salmonella typhimurium assay system. The R. alaternus tested extracts exhibited no genotoxicity either with or without the external S9 activation mixture. However, all the extracts, particularly aqueous extract (A) and its chloroformic fraction (A(2)) significantly decreased the genotoxicity induced by aflatoxin B(1) and nifuroxazide. Moreover, the different extracts showed no mutagenicity when tested with Salmonella typhimurium strains TA1535 and TA1538 either with or without the S9 mix. Aqueous extract as well as its A(2) fraction exhibited the highest level of protection towards the direct mutagen, sodium azide-induced response in TA1535 strain with mutagenicity inhibition percentages of 83.6% and 91.4%, respectively, at a dose of 250 microg/plate. The results obtained by the Ames test assay confirm those of SOS chromotest. These same active extracts exhibited high xanthine oxidase (XOD) inhibiting with respective IC(50) values of 208 and 137 microg/ml, and superoxide anion-scavenging effects (IC(50) values of 132 and 117 microg/ml) when tested in the XOD enzymatic assay system. Our findings emphasize the potential of R. alaternus to prevent mutations and also its antioxidant effect.
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Affiliation(s)
- Rebai Ben Ammar
- Unité de Pharmacognosie/Biologie Moléculaire 99/UR/07-03, Faculté de Pharmacie, Rue Avicenne, Monastir 5000, Tunisia
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Bouhlel I, Valenti K, Kilani S, Skandrani I, Ben Sghaier M, Mariotte AM, Dijoux-Franca MG, Ghedira K, Hininger-Favier I, Laporte F, Chekir-Ghedira L. Antimutagenic, antigenotoxic and antioxidant activities of Acacia salicina extracts (ASE) and modulation of cell gene expression by H2O2 and ASE treatment. Toxicol In Vitro 2008; 22:1264-72. [PMID: 18515041 DOI: 10.1016/j.tiv.2008.04.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2007] [Revised: 12/27/2007] [Accepted: 04/11/2008] [Indexed: 12/12/2022]
Abstract
The total oligomers flavonoids (TOF), chloroform, petroleum ether and aqueous extracts from Acacia salicina, were investigated for the antioxidative, cytotoxic, antimutagenic and antigenotoxic activities. The viability of K562 cells were affected by all extracts after 48 h exposure. Our results showed that A. salicina extracts have antigenotoxic and/or antimutagenic activities. TOF and chloroform extracts exhibit antioxidant properties, expressed by the capacity of these extracts to inhibit xanthine oxidase activity. To further explore the mechanism of action of A. salicina extracts, we characterized expression profiles of genes involved in antioxidant protection and DNA repair in the human lymphoblastic cell line K562 exposed to H2O2. Transcription of several genes related to the thioredoxin antioxidant system and to the DNA base-excision repair pathway was up-regulated after incubation with chloroform, TOF and petroleum ether extracts. Moreover genes involved in the nucleotide-excision repair pathway and genes coding for catalase and Mn-superoxide-dismutase, two important antioxidant enzymes, were induced after incubation with the chloroform extract. Taken together, these observations provide evidence that the chloroform and TOF extracts of A. salicina leaves contain bioactive compounds that are able to protect cells against the consequences of an oxidative stress.
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Affiliation(s)
- Ines Bouhlel
- Unité de Pharmacognosie/Biologie Moléculaire 99/UR/07-03, Faculté de Pharmacie de Monastir, Rue Avicenne 5000 Monastir, Tunisia
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Rosales-Reyes T, de la Garza M, Arias-Castro C, Rodríguez-Mendiola M, Fattel-Fazenda S, Arce-Popoca E, Hernández-García S, Villa-Treviño S. Aqueous crude extract of Rhoeo discolor, a Mexican medicinal plant, decreases the formation of liver preneoplastic foci in rats. JOURNAL OF ETHNOPHARMACOLOGY 2008; 115:381-386. [PMID: 18063494 DOI: 10.1016/j.jep.2007.10.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2007] [Revised: 10/04/2007] [Accepted: 10/09/2007] [Indexed: 05/25/2023]
Abstract
There are many plants in Mexico with medicinal properties, some of them used in alternative medicine to treat cancer, such is the case of Rhoeo discolor L. Hér Hance (Commelinaceae family); however, there are not scientific reports that validate their antitumoral property. The present study shows the protective effects of the Rhoeo discolor aqueous crude extract (ACE) against rat liver cancer using the resistant-hepatocyte model. The carcinogenesis protocol consisted on the initiation with N-diethylnitrosamine, followed by the promotion with 2-acetylaminofluorene and a partial hepatectomy. After 24 days, the gamma-glutamyl transpeptidase positive, corresponding to altered hepatocytes foci (AHF), were quantified. Additionally to discard a possible carcinogenic effect of ACE, it was first tested as promoting agent instead 2-acetylaminofluorene, and second, ACE was administered as initiator and promoter instead of the whole carcinogenic treatment. In summary, firstly, ACE administration reduced the number and area of preneoplastic lesions with dose below 20mg/kg body weight and secondly, ACE administration neither presented a promoting or initiator effects nor induced the development of AHF. Results of this investigation justify continuing with further studies of Rhoeo discolor components to develop chemoprevention strategies as an option in the treatment of cancer.
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Affiliation(s)
- Tábata Rosales-Reyes
- Laboratorio de Biotecnología Vegetal, Centro de Investigación y Graduados Agropecuarios del Instituto Tecnológico de Tlajomulco, Jalisco, Km 10 Carr. San Miguel Cuyutlán-Tlajomulco, Tlajomulco de Zúñiga, Jal., Mexico
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Alba MA, Sánchez RR, Pérez NJR, Navarrete JS, Paz RF, Montoya-Estrada A, Gómez JJH. Comparative study of the antimutagenic properties of vitamins C and E against mutation induced by norfloxacin. BMC Pharmacol 2008; 8:2. [PMID: 18267022 PMCID: PMC2276188 DOI: 10.1186/1471-2210-8-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2007] [Accepted: 02/11/2008] [Indexed: 11/17/2022] Open
Abstract
Background Norfloxacin like other fluoroquinolones, is known to be mutagenic for Salmonella typhimurium TA102 strain. This mutagenic effect is due to free oxygen radicals (ROS), because it is inhibited by antioxidants such as β-carotene and naturally occurring antioxidants of Roheo discolor and other plants. The aim of this work was to evaluate combination therapy with norfloxacin and vitamins C and E, to reduce the possible genotoxic risk associated with fluoroquinolones. Method The antimutagenicity of α-tocoferol (Vitamin E) and ascorbic acid (Vitamin C) against norfloxacin-induced mutation was evaluated on S. typhimurium TA102, using the aroclor-1254-induced S9 rat liver homogenate. The minimum inhibitory concentration (MIC) a measure of the bactericidal effect of norfloxacin, was obtained in vitro by the plate dilution method. Results Vitamin E (0.5 mg per Petri dish) induced a statistically significant reduction (P < 0.001) in the mutagenicity of norfloxacin, whereas Vitamin C (1 mg per Petri dish) had no such effect. Neither of these vitamins altered the MIC for norfloxacin against 25 uropathogenic strains of Escherichia coli. Conclusion These results suggest that Vitamin E is a potent antimutagen that would be worthwhile being used in conjunction with fluoroquinolone treatment. The minimal antimutagenic effect of Vitamin C observed under these experimental conditions may have been because Vitamin C in the Ames test induces a Fenton reaction, and if divalent cations are present, it can act as a pro-oxidant rather than an antioxidant. Ascorbic acid should be further evaluated in the presence of different divalent cations concentrations.
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Affiliation(s)
- Myriam Arriaga Alba
- Hospital Juárez de México, Dirección de Investigación y Enseñanza, Av, Instituto Politécnico Nacional No, 5160, Magdalena de las Salinas, DF, 07760, México.
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Ammar RB, Bouhlel I, Valenti K, Sghaier MB, Kilani S, Mariotte AM, Dijoux-Franca MG, Laporte F, Ghedira K, Chekir-Ghedira L. Transcriptional response of genes involved in cell defense system in human cells stressed by H2O2 and pre-treated with (Tunisian) Rhamnus alaternus extracts: Combination with polyphenolic compounds and classic in vitro assays. Chem Biol Interact 2007; 168:171-83. [PMID: 17512922 DOI: 10.1016/j.cbi.2007.04.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2006] [Revised: 03/16/2007] [Accepted: 04/09/2007] [Indexed: 11/18/2022]
Abstract
The ability of three Rhamnus alaternus leaves extracts on antigenotoxic and gene expression level effects was respectively investigated in a bacterial assay system, i.e. the SOS chromotest with Escherichia coli PQ37 and in human K562 lymphoblast cell line. Total oligomers flavonoids (TOF) enriched, methanol and ethyl acetate extracts were prepared from powdered R. alaternus leaves and characterized quantitatively for the presence of polyphenolic compounds. We explored the response to oxidative stress using the transcriptional profile of genes in K562 cells stressed with H2O2 after incubation with plant extracts. For this purpose, we used a cDNA microarrays containing 82 genes related to cell defense, essentially represented by antioxidant and DNA repair genes. Analysis revealed that SOD1, AOE 372, TXN genes involved in the antioxidant defense system and XPC, LIG4, POLD2, PCNA genes implied in the DNA repair system were among the most expressed ones in the presence of the tested extracts. These results were in accordance with those obtained when we tested the antigenotoxic and antioxidant effects of the same extracts with, respectively the SOS chromotest and the xanthine/xanthine oxidase enzymatic assay system. The effect of the tested extracts on SOS response induced by both Aflatoxin B1 (AFB1: 10 microg/assay) and nifuroxazide (20 microg/assay) showed that the TOF extract exhibited the highest antimutagenic level towards the indirect mutagen AFB1. Whereas ethyl acetate extract showed the highest antimutagenic effect towards the direct mutagen, nifuroxazide. None of the tested extracts induced mutagenic activity. However all the tested extracts exhibited xanthine oxidase inhibiting and superoxide anions scavenging effects. R. alaternus extracts contain compounds with significant antioxidant and antigenotoxic activities. These compounds modulate gene expression as detected by using cDNA arrays.
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Affiliation(s)
- Rebai Ben Ammar
- Unité de Pharmacognosie/Biologie Moléculaire 99/UR/07-03, Faculté de Pharmacie/Médecine Dentaire de Monastir, Rue Avicenne 5000 Monastir, Tunisie
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Mansour HB, Boubaker J, Bouhlel I, Mahmoud A, Bernillon S, Chibani JB, Ghedira K, Chekir-Ghedira L. Antigenotoxic activities of crude extracts from Acacia salicina leaves. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2007; 48:58-66. [PMID: 17177209 DOI: 10.1002/em.20265] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
For centuries, plants have been used in traditional medicines and there has been recent interest in the chemopreventive properties of compounds derived from plants. In the present study, we investigated the effects of extracts of Acacia salicina leaves on the genotoxicity of benzo[a]pyrene (B(a)P) and nifuroxazide in the SOS Chromotest. Aqueous, total oligomers flavonoids (TOF)-enriched, petroleum ether, chloroform, ethyl acetate, and methanol extracts were prepared from powdered Acacia leaves, and characterized qualitatively for the presence of tannins, flavonoids, and sterols. All the extracts significantly decreased the genotoxicity induced by 1 microg B(a)P (+S9) and 10 microg nifuroxazide (-S9). The TOF-enriched and methanol extracts decreased the SOS response induced by B(a)P to a greater extent, whereas the TOF-enriched and the ethyl acetate extracts exhibited increased activity against the SOS response produced by nifuroxazide. In addition, the aqueous, ethyl acetate, and methanol extracts showed increased activity in scavenging the 1,1-diphenyl- 2-picrylhydrazyl (DPPH) free radical, while 100-300 microg/ml of all the test extracts were active in inhibiting O2-production in a xanthine/xanthine oxidase system. In contrast, only the petroleum ether extract was effective at inhibiting nitroblue tetrazolium reduction by the superoxide radical in a nonenzymatic O2- -generating system. The present study indicates that extracts of A. salicina leaves are a significant source of compounds with antigenotoxic and antioxidant activity (most likely phenolic compounds and sterols), and thus may be useful for chemoprevention.
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Affiliation(s)
- Hédi B Mansour
- Unité de Pharmacognosie/Biologie Moléculaire "degrees 99/UR/07-03degrees". Faculté de Pharmacie de Monastir. Rue Avicenne, 5000 Monastir, Tunisie
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Cariño-Cortés R, Hernández-Ceruelos A, Torres-Valencia JM, González-Avila M, Arriaga-Alba M, Madrigal-Bujaidar E. Antimutagenicity of Stevia pilosa and Stevia eupatoria evaluated with the Ames test. Toxicol In Vitro 2006; 21:691-7. [PMID: 17267169 DOI: 10.1016/j.tiv.2006.12.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2006] [Revised: 11/27/2006] [Accepted: 12/08/2006] [Indexed: 01/10/2023]
Abstract
Stevia pilosa and Stevia eupatoria are plants used for various purposes in traditional medicine. In this report we studied the antimutagenic effect of methanolic extracts obtained from leaves, root, and flowers of the two species using the Ames test with and without metabolic activation. We tested the effect of the extracts on the damage induced by three mutagens with the following results: 1 - we found an inhibitory effect of both species on the mutagenicity induced by 2-aminoanthracene in the strain TA98. The best antimutagenic effect was obtained with leaves of both species and the flowers of S. eupatoria (99%), 2 - the mutations induced with N-ethyl-N'-nitro-N-nitrosoguanidine in the strain TA100 was also reduced. The flowers of S. pilosa and the root of S. eupatoria showed about 93% of inhibition, 3 - finally, the mutations induced by mitomycin-C on the strain TA102 had a reduction of 87% with the leaves of S. eupatoria. Besides, we determined the radical scavenging potential of the extracts with the DPPH method, and found a potent effect produced by all extracts, with an efficacy of more than 90%. The present study showed both antimutagenic and antioxidant potential of the tested extracts, and suggest the pertinence to confirm these effects in other models, and to accurately determine their mechanism of action.
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Affiliation(s)
- R Cariño-Cortés
- Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Pachuca, México
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Stagos D, Kazantzoglou G, Theofanidou D, Kakalopoulou G, Magiatis P, Mitaku S, Kouretas D. Activity of grape extracts from Greek varieties of Vitis vinifera against mutagenicity induced by bleomycin and hydrogen peroxide in Salmonella typhimurium strain TA102. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2006; 609:165-75. [PMID: 16935024 DOI: 10.1016/j.mrgentox.2006.06.032] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2005] [Revised: 02/14/2006] [Accepted: 06/24/2006] [Indexed: 10/24/2022]
Abstract
Several in vivo and in vitro studies have shown that grape extracts could prevent certain steps in carcinogenesis and a few mechanisms have been proposed for this activity. In this study, the potential antimutagenic activity of methanolic and aqueous extracts from two Greek grape varieties of Vitis vinifera against DNA damage induced by reactive oxygen species (ROS) was assessed as a potential novel chemopreventive mechanism, using Salmonella typhimurium strain TA102. The two grape varieties were Assyrtiko (white grapes) and Mandilaria (red grapes), while the oxidant mutagens used were bleomycin (BLM) and hydrogen peroxide (H(2)O(2)). Since it has been considered that polyphenols present in grapes are their most potent biologically active compounds, we also tested the effects of polyphenol-rich fractions as well as some of the more common grape polyphenols on the activity of the two test mutagens. These polyphenols were quercetin, (+)-catechin, (-)-epicatechin, trans-resveratrol, gallic acid and protocatechuic acid. Almost all extracts showed inhibitory activity against both mutagens. On the other hand, polyphenol-rich fractions as well as individual polyphenols at concentrations found in the extracts either did not diminish or did enhance the activity of the mutagens. These results suggest that the protection of DNA from mutations induced by ROS may be one of the mechanisms accounting for the chemopreventive activity of grape extracts. However, it seems that this protective activity may not be attributed to polyphenols but rather to a synergism of many compounds in the grapes.
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Affiliation(s)
- Demetrios Stagos
- Department of Biochemistry and Biotechnology, University of Thessaly, Ploutonos 26 & Aiolou, GR-41221 Larissa, Greece
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Reyes-López M, Villa-Treviño S, Arriaga-Alba M, Alemán-Lazarini L, Rodríguez-Mendiola M, Arias-Castro C, Fattel-Fazenda S, de la Garza M. The amoebicidal aqueous extract from Castela texana possesses antigenotoxic and antimutagenic properties. Toxicol In Vitro 2005; 19:91-7. [PMID: 15582360 DOI: 10.1016/j.tiv.2004.06.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2004] [Accepted: 06/25/2004] [Indexed: 11/16/2022]
Abstract
Due to long-term treatment toxicity and clinical resistance to drugs commonly used against E. histolytica, new drugs against amoebiasis are urgently needed. Castela texana ("chaparro amargo") is a shrub taken traditionally in teas and capsules of dry plant to treat intestinal amoebic infections. An aqueous extract was prepared and its mutagenic, genotoxic and cytotoxicity properties were evaluated in prokaryotic and eukaryotic systems. This extract was neither mutagenic when evaluated with the Ames test in Salmonella typhimurium strains TA98, TA100 and TA102, nor genotoxic in unscheduled DNA synthesis in hepatocyte cultures, even at the highest concentrations tested. In fact, C. texana extract showed antimutagenic activity on S. typhimurium strains TA98 and TA100 in the Ames test. Furthermore, it was capable of protecting liver cell cultures against unscheduled DNA synthesis induced by 2-acetylaminofluorene at a concentration of 6.77 microg/ml. A free-radical scavenging test was used in order to explore the antioxidant capacity of C. texana extract with S. typhimurium strain TA102 pretreated with norfloxacin, a free radical producer. This extract showed a free radical withdrawal effect. The effective chemoprotective activity of this extract could be due to the antioxidant capacity of the C. texana extract components. In this paper it is shown that the antiamoebic natural product, C. texana, is also antimutagenic and protects against induction of preneoplastic lesions in rat liver. These results justify further studies to extend it use to human beings.
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Affiliation(s)
- M Reyes-López
- Departamento de Biología Celular, Centro de Investigación y de Estudios Avanzados del IPN Apartado postal 14-740. México D.F. 07000, México
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