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Dembogurski DSDO, Bonfá IS, Candeloro L, Parisotto EB, Toffoli Kadri MC, Silva DB. Infusion from Miconia albicans (Melastomataceae) leaves exhibits anti-inflammatory and anti-hyperalgesic activities without toxicity. JOURNAL OF ETHNOPHARMACOLOGY 2023; 308:116251. [PMID: 36791930 DOI: 10.1016/j.jep.2023.116251] [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: 11/01/2022] [Revised: 02/02/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The leaves of Miconia albicans have been extensively used as a traditional medicine to treat inflammation, infection, arthritis, joint pain, and analgesia, which can be purchased easily. Nevertheless, the scientific evidence of chemical profile identification and toxicity investigation is meager. AIM OF THE STUDY This study aimed to determine the chemical profile of Miconia albicans aqueous extract (MAAE), to investigate its anti-inflammatory and hyperalgesic effects, and toxicity (acute and repeated-dose oral) in vivo studies. MATERIALS AND METHODS MAAE was obtained by infusion method and its chemical constituents were analyzed and annotated by LC-DAD-MS. The in vivo tests were performed with male and female Swiss mice. Toxicity studies were examined by acute (2000 mg/kg) and repeated-dose oral assays (51.2; 256; 1280 mg/kg); anti-inflammatory evaluation was performed by paw edema and leukocyte migration, and anti-hyperalgesic properties were analyzed by abdominal writhing induced by acetic acid and formalin. The animals were treated by oral means with 51.2, 256, and 1280 mg/kg of MAAE. RESULTS Twenty-four compounds were annotated from MAAE by LC-DAD-MS, such as ellagitannins, ellagic acid derivatives, flavan-3-ol, and O-glycosylated compounds, including flavonols, triterpenes, and megastigmanes. MAAE induced no significant toxicological effects in the acute and repeated-dose oral assays at lower doses and no histological changes were observed. Hematological and biochemical showed no significant alterations. The oral administration of MAAE 256 mg/kg inhibited the edematogenic effect and reduced the leukocyte migration. In addition, MAAE decreased the abdominal writhings induced by acetic acid and the paw-licking time by formalin assay. CONCLUSION MAAE showed a significant reduction in inflammatory levels and leukocyte migration, revealing anti-hyperalgesic properties. Additionally, MAAE revealed no acute and repeated-doses toxicities.
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Affiliation(s)
- Djaceli Sampaio de Oliveira Dembogurski
- Laboratory of Natural Products and Mass Spectrometry (LaPNEM), Faculty of Pharmaceutical Sciences, Food and Nutrition (FACFAN), Federal University of Mato Grosso do Sul, Mato Grosso do Sul, Brazil
| | - Iluska Senna Bonfá
- Laboratory of Pharmacology and Inflammation, FACFAN/ Federal University of Mato Grosso do Sul, Mato Grosso do Sul, Brazil
| | - Luciane Candeloro
- Laboratory of Histology, Biosciences Institute (INBIO), Federal University of Mato Grosso do Sul, Mato Grosso do Sul, Brazil
| | - Eduardo Benedetti Parisotto
- Laboratory of Hematology, Faculty of Pharmaceutical Sciences, Food and Nutrition (FACFAN), Federal University of Mato Grosso do Sul, Mato Grosso do Sul, Brazil
| | - Mônica Cristina Toffoli Kadri
- Laboratory of Pharmacology and Inflammation, FACFAN/ Federal University of Mato Grosso do Sul, Mato Grosso do Sul, Brazil
| | - Denise Brentan Silva
- Laboratory of Natural Products and Mass Spectrometry (LaPNEM), Faculty of Pharmaceutical Sciences, Food and Nutrition (FACFAN), Federal University of Mato Grosso do Sul, Mato Grosso do Sul, Brazil.
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The Genus Miconia Ruiz & Pav. (Melastomataceae): Ethnomedicinal Uses, Pharmacology, and Phytochemistry. Molecules 2022; 27:molecules27134132. [PMID: 35807377 PMCID: PMC9267935 DOI: 10.3390/molecules27134132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/17/2022] [Accepted: 06/24/2022] [Indexed: 12/10/2022] Open
Abstract
Species of the genus Miconia are used in traditional medicine for the treatment of diseases, such as pain, throat infections, fever, and cold, and they used as depuratives, diuretics, and sedatives. This work reviewed studies carried out with Miconia species, highlighting its ethnomedicinal uses and pharmacological and phytochemical potential. This information was collected in the main platforms of scientific research (PubMed, Scopus, and Web of Science). Our findings show that some of the traditional uses of Miconia are corroborated by biological and/or pharmacological assays, which demonstrated, among other properties, anti-inflammatory, analgesic, antimutagenic, antiparasitic, antioxidant, cytotoxic, and antimicrobial activities. A total of 148 chemical compounds were identified in Miconia species, with phenolic compounds being the main constituents found in the species of this genus. Such phytochemical investigations have demonstrated the potential of species belonging to this genus as a source of bioactive substances, thus reinforcing their medicinal and pharmacological importance.
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Hussnain Siddique M, Andleeb R, Ashraf A, Zubair M, Fakhar-e-Alam M, Hayat S, Muzammil S, Atif M, Shafeeq S, Afzal M. Integration of in silicoand in vitroapproaches to evaluate antioxidant and anticancer properties of Tribulus terrestris extracts. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Theaflavin-3-gallate, a natural antagonist for Hsp90: In-silico and in-vitro approach. Chem Biol Interact 2021; 353:109774. [PMID: 34958756 DOI: 10.1016/j.cbi.2021.109774] [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: 08/18/2021] [Revised: 11/21/2021] [Accepted: 12/07/2021] [Indexed: 11/21/2022]
Abstract
Poor prognosis and metastasis have been recognized as the major cause of breast cancer related deaths worldwide. Recent experimental evidence has shown that Hsp90, the prime chaperone, is overexpressed in many cancers and is responsible if reducing the 5-year survival rate of cancer patients. Therefore, targeted inhibition of Hsp90 may be a new and effective way to target cancer as well as enhancing therapeutic outcomes. In the present study, screening and stimulation of potential natural compounds result in the identification of theaflavin-3-gallate as a promising inhibitory compound of Hsp90. Further in-vitro validation of the cytotoxic effect of theaflavin-3-gallate in human breast carcinoma cell line MCF7 and normal cell line MCF10A revealed that theaflavin-3-gallate significantly inhibited the cell proliferation of MCF7 cells whereas no cytotoxic effect was observed on MCF10A cells. We also found that theaflavin-3-gallate significantly induced programmed cell death by arresting cells in the G2/M phase of the cell cycle. A significant decrease in cell migration and colony formation by theaflavin-3-gallate treatment was also observed in MCF7 cells. Furthermore, theaflavin-3-gallate significantly downregulated the mRNA expression patterns of the HSP90, MMP9, VEGFA, and SPP1 genes. Collectively, our results demonstrated theaflavin-3-gallate as a potential natural Hsp90 inhibitor that can be used to enhance the therapeutic efficacy of existing breast cancer therapies and improve overall survival of breast cancer patients.
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Lima TC, Matos SS, Carvalho TF, Silveira-Filho AJ, Couto LPSM, Quintans-Júnior LJ, Quintans JSS, Silva AMO, Heimfarth L, Passos FRS, Gandhi SR, Lima BS, Silva FA. Evidence for the involvement of IL-1β and TNF-α in anti-inflammatory effect and antioxidative stress profile of the standardized dried extract from Miconia albicans Sw. (Triana) Leaves (Melastomataceae). JOURNAL OF ETHNOPHARMACOLOGY 2020; 259:112908. [PMID: 32387231 DOI: 10.1016/j.jep.2020.112908] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 04/07/2020] [Accepted: 04/21/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Miconia albicans (Melastomataceae), commonly known in Brazil as "canela-de-velho", is used in folk medicine for treating rheumatoid arthritis and reducing pain and inflammation. THE AIM OF THE CURRENT WORK WAS: to provide data on physicochemical characterization of the drug plant and dried extract from M. albicans leaves, as well as investigate the anti-inflammatory effect and antioxidant stress profile from the standardized dried extract of this species employing different model systems. MATERIALS AND METHODS plant material (dried crushed leaves) was extracted by turboextraction using 50% ethanol (v/v). Different pharmacological techniques were performed to establish quality control parameters of the plant drug, and dried extract of M. albicans (DEMA) was chemically characterized by HPLC-PDA to selection of the chemical marker. Total phenolic and flavonoid contents were determined by the Folin-Ciocalteu and AlCl3 colorimetric methods, respectively. Antioxidant potential of the DEMA was investigated by employing different in vitro antioxidant assays, including DPPH and ABTS radical scavenging assays, ferric reducing antioxidant assay, NO scavenging assay, metal ion (Fe2+) chelating activity and antioxidant capacity by inhibition of lipid peroxidation (TBARS). Finally, anti-inflammatory activity of the DEMA was evaluated using two models of acute inflammation: carrageenan induced inflammation and mechanical hyperalgesia. RESULTS AND DISCUSSION M. albicans leaves, after drying in forced air circulation chamber at ±40 °C for 48 h and crushing in knife mill, presented a moisture content below the maximum allowed for plant drugs (6.4%). The powder of M. albicans was classified as moderately coarse and total ash content was found to be 6.27%. Preliminary phytochemical screening of DEMA revealed the presence of flavonoids, tannins, saponins, leucoanthocyanins and steroids. DEMA had significant higher total phenolic (551.3 mg gallic acid equivalent/g of dried extract) and flavonoid contents (367.19 mg catechin equivalent/g of dried extract). Two major compounds (λ = 340 nm) were identified in DEMA by HPLC-PDA: the flavonoids rutin and quercetin. Rutin content, selected as chemical marker, was determined and found to be 1.16 mg/g dried extract (r = 0.9941). Regarding to antioxidant activity, our results revealed the DEMA exhibited good antioxidant activity on different models. M. albicans treatment also reduced the levels of TNF-α e IL-1β and consequently inflammatory nociception and edema caused by carrageenan injection. Based on previous studies and our results, is possible to suggest a positive correlation between the flavonoids rutin and quercetin and the antioxidant and anti-inflammatory capacities. CONCLUSION Together, these data suggest that M. albicans has the possibility of use in conditions such as arthritis or other joint pain, even needing other work to better consolidate this profile.
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Affiliation(s)
- Tamires C Lima
- Department of Pharmacy (DFA), Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil.
| | - Saulo S Matos
- Department of Pharmacy (DFA), Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil
| | - Thaís F Carvalho
- Department of Pharmacy (DFA), Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil
| | - Alex J Silveira-Filho
- Department of Pharmacy (DFA), Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil
| | - Luzi P S M Couto
- Department of Pharmacy (DFA), Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil
| | - Lucindo J Quintans-Júnior
- Department of Physiology (DFS), Laboratory of Neuroscience and Pharmacological Assays (LANEF), Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil
| | - Jullyana S S Quintans
- Department of Physiology (DFS), Laboratory of Neuroscience and Pharmacological Assays (LANEF), Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil
| | - Ana Mara O Silva
- Department of Nutrition, Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil
| | - Luana Heimfarth
- Department of Physiology (DFS), Laboratory of Neuroscience and Pharmacological Assays (LANEF), Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil
| | - Fabiolla R S Passos
- Department of Physiology (DFS), Laboratory of Neuroscience and Pharmacological Assays (LANEF), Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil
| | - Sathiyabama R Gandhi
- Department of Physiology (DFS), Laboratory of Neuroscience and Pharmacological Assays (LANEF), Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil
| | - Bruno S Lima
- Department of Pharmacy (DFA), Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil
| | - Francilene A Silva
- Department of Pharmacy (DFA), Federal University of Sergipe (UFS), São Cristóvão, SE, 49100-000, Brazil
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Leite ADS, Islam MT, Paz MFCJ, Júnior ALG, Oliveira GLDS, Cito AMDGL, Melo-Cavalcante AADC, Lopes JAD. Cytogenotoxic and mutagenic profiling of cashew nut shell liquids and cardanol. CLINICAL PHYTOSCIENCE 2019. [DOI: 10.1186/s40816-019-0129-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AbstractBackgroundCashew and its compounds have many important biological effects. This study is aimed at evaluating genotoxic and mutagenic effects of natural cashew nut shell liquid (nCNSL) and industrial cashew nut shell liquid (iCNSL) and a major component of iCNSL called Cardanol.MethodsTest samples were undergone for comet assay and micronucleus tests inSwissalbino mice. Animals were orally treated with 17.37, 34.75 and 69.5 mg/kg of the test substances taking distilled water (10 mL/kg; DW) and cyclophosphamide (50 mg/kg) as negative (NC) and positive (PC) controls, respectively.ResultsThe results suggest that nCNSL at 34.7 and 69.5 mg/kg and Cardanol at all tested doses induced significant genotoxic effects to the female mouse bone marrow cells, while iCNSL did not. Both nCNSL and iCNSL as well as Cardanol did not show mutagenic and cytotoxic effects. All the test samples also showed DNA repair capacity at low dose.ConclusionCashew nut shell liquids and Cardanol showed genotoxic effects at high dose, but DNA repair, non-mutagenic and non-cytotoxic effects at low dose.
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Modulation of hepatic ABC transporters by Eruca vesicaria intake: Potential diet-drug interactions. Food Chem Toxicol 2019; 133:110797. [PMID: 31479713 DOI: 10.1016/j.fct.2019.110797] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 08/02/2019] [Accepted: 08/28/2019] [Indexed: 02/06/2023]
Abstract
The aim of this work was to evaluate whether oral administration of Eruca vesicaria, a species of rocket cultivated in Argentina, could modify cyclophosphamide (CP)-induced genotoxicity through modulation of hepatic ABC transporters. Daily oral administration of E. vesicaria fresh leaves juice (1.0, 1.4 and 2.0 g/kg) for 14 days did not alter genotoxicity biomarkers -alkaline comet assay and micronucleus test -in neither male nor female mice. Instead, repeated intake of this cruciferous decreased CP-induced DNA damage dose-dependently and it caused hepatic overexpression of P-glycoprotein (P-gp; 1.4 and 2.0 g/kg) and multidrug resistance protein 2 (MRP2; 2.0 g/kg), but not breast cancer resistance protein (Bcrp). The antigenotoxic effect of E. vesicaria was prevented by 50 mg/kg verapamil (P-gp inhibitor) or 10 mg/kg indomethacin (MRP2 inhibitor). In turn, CP-induced cytotoxicity (10 mM, 24 h) on human hepatoma cells (HepG2/C3A) was significantly reduced by preincubation with E. vesicaria (1.4 mg/ml; 48 h); this effect was absent when CP was coincubated with 35 μM verapamil, 80 μM indomethacin or 10 μM KO-143 (BCRP inhibitor). Altogether, these results allow us to demonstrate that repeated intake of E. vesicaria exhibited antigenotoxicity, at least in part, by induction of hepatic ABC transporters in vivo in mice as well as in vitro in human liver cells. This could account for other diet-drug interactions.
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Leishmanicidal and antimicrobial activity of primin and primin-containing extracts from Miconia willdenowii. Fitoterapia 2019; 138:104297. [PMID: 31404617 DOI: 10.1016/j.fitote.2019.104297] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 08/06/2019] [Accepted: 08/06/2019] [Indexed: 11/23/2022]
Abstract
As a part of an ongoing bioprospective project, searching for potential medicinal plants from the Brazilian Atlantic Forest, Miconia willdenowii was selected for its potential leishmanicidal and antimicrobial activities. The crude ethanolic extract of M. willdenowii showed an inhibition of 99.7% of the promastigote forms of Leishmania amazonensis at the concentration of 80 μg/mL. Further investigation of its antimicrobial activity against pathogenic fungi and Gram positive and negative bacteria, revealed a significant antimicrobial activity. A bioguided study with its liquid-liquid partition fractions revealed the hexane fraction (Hex) as the most active against Leishmania, inhibiting 99.2% and 46.9% of the protozoan at concentrations of 40 and 20 μg/mL, respectively. Hex also showed significant antimicrobial activity against Staphylococcus aureus and Candida krusei with IC50 of 15.6 and 62.5 μg/mL, respectively. Purification of Hex led to the isolation of 2-methoxy-6-pentyl-benzoquinone (1, also known as primin) as the active metabolite, probably responsible for the observed antimicrobial and anti-leishmania effects. Primin (1) disclosed leishmanicidal activity (IC50 = 1.25 μM), showing higher potency than the standard drug amphotericin B (IC50 = 5.08 μM), with additional antifungal effects against all tested fungi species. Compound 1 also showed significant activity against S. aureus (IC50 = 8.94 μM), showing a comparable potency with the reference drug chloramphenicol (IC50 = 6.19 μM), but with a potential cytotoxicity towards peripheral human blood mononuclear cells (CC50 = 255.15 μM). Here in, the antimicrobial and anti-L. amazonensis effects of M. willdenowii are reported for the first time, as well as Primin (1) as its probable bioactive metabolite.
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Fernández-Bedmar Z, Demyda-Peyrás S, Merinas-Amo T, Del Río-Celestino M. Nutraceutic Potential of Two Allium Species and Their Distinctive Organosulfur Compounds: A Multi-Assay Evaluation. Foods 2019; 8:foods8060222. [PMID: 31234398 PMCID: PMC6617039 DOI: 10.3390/foods8060222] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/17/2019] [Accepted: 06/18/2019] [Indexed: 01/03/2023] Open
Abstract
This study aimed to evaluate the biological activities of two Allium species (garlic and onion) as well as diallyl disulphide (DADS) and dipropyl disulphide (DPDS) as their representative bioactive compounds in a multi-assay experimental design. The genotoxic, antigenotoxic, and lifespan effects of garlic, onion, DADS, and DPDS were checked in Drosophila melanogaster and their cytotoxic, pro-apoptotic, and DNA-clastogenic activities were analyzed using HL60 tumoral cells. All compounds were non-genotoxic and antigenotoxic against H2O2-induced DNA damage with a positive dose-response effect and different inhibition percentages (the highest value: 95% for DADS) at all tested concentrations. Daily intake of Allium vegetables, DADS, or DPDS had no positive effects on flies' lifespan and health span. Garlic and DADS exerted the highest cytotoxic effects in a positive dose-dependent manner. Garlic and DADS exerted a DNA-internucleosomal fragmentation as an index of induced proapoptotic activity on HL60 cells. Allium vegetables and DADS were able to induce clastogenic strand breaks in the DNA of HL60 cells. This study showed the genomic safety of the assayed substances and their protective genetic effects against the hydrogen peroxide genotoxine. Long-term treatments during the whole life of the Drosophila genetic model were beneficial only at low-median concentrations. The chemo-preventive activity of garlic could be associated with its distinctive organosulfur DADS. We suggest that supplementary studies are needed to clarify the cell death pathway against garlic and DADS.
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Affiliation(s)
- Zahira Fernández-Bedmar
- Department of Genetics, University of Córdoba, Campus Rabanales, Gregor Mendel Building, 14071 Córdoba, Spain.
| | - Sebastián Demyda-Peyrás
- Institute of Veterinary Genetics (IGEVET), Facultad de Ciencias Veterinarias, UNLP-CONICET, Universidad Nacional de La Plata, La Plata 1900, Argentina.
| | - Tania Merinas-Amo
- Department of Genetics, University of Córdoba, Campus Rabanales, Gregor Mendel Building, 14071 Córdoba, Spain.
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Gontijo DC, Gontijo PC, Brandão GC, Diaz MAN, de Oliveira AB, Fietto LG, Leite JPV. Antioxidant study indicative of antibacterial and antimutagenic activities of an ellagitannin-rich aqueous extract from the leaves of Miconia latecrenata. JOURNAL OF ETHNOPHARMACOLOGY 2019; 236:114-123. [PMID: 30853643 DOI: 10.1016/j.jep.2019.03.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 03/04/2019] [Accepted: 03/04/2019] [Indexed: 06/09/2023]
Abstract
Ethnopharmacological relevance; Several plant species of Miconia genus are commonly used in Brazilian folk medicine as anti-inflammatory agents and for the treatment of infectious diseases. Infusions and extracts of Miconia species are also reported as analgesic, antimicrobial, antimalarial, antioxidant, anti-inflammatory, antinociceptive, antimutagenic, and antitumoral. Aim of the study; To determine the phytochemical composition of an aqueous extract of Miconia latecrenata leaves and to evaluate its antioxidant, antibacterial, antimutagenic and antigenotoxic activities. Materials and Methods; The following methods were used for the different effects: I) antioxidant - β-carotene/linoleic acid, lipid peroxidation, and DPPH• radical scavenging; II) antibacterial - agar well diffusion and MIC methods); III) antimutagenic assays - Ames Test; and IV) antigenotoxic - Plasmid cleavage test. The phytochemical analysis and phenolic quantification were carried out by UPLC-DAD-ESI-MS/MS and colorimetry, respectively. In addition, statistical correlation analysis was performed aiming to evaluate the Pearson correlation between phenolic compounds and biological assays. Results; A high content of tannins was observed and the ellagitannin isomers of 1,2,3,5-tris-galloyl-4,6-HHDP-glucose were identified as the main constituents of the leaves aqueous extract. High antioxidant effect, in different tests, high antibacterial activity to gram-positive and negative strains, as well as high antimutagenic activity were observed. Statistical analysis showed a high Pearson correlation for the tannin content in relation to the results of the antioxidant and antibacterial tests. In general, the antioxidant action of the aqueous extract showed low correlation with the antimutagenic activity. Conclusions; The present results confirmed the expectations regarding the pharmacological profile of M. latecrenata supporting its therapeutic potential in relation to ROS/RNS related disorders. Furthermore, the phenolic compounds of M. latecrenata can act, in turn, minimizing or inhibiting the biological macromolecules damage, especially DNA.
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Affiliation(s)
- Douglas Costa Gontijo
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP, 31270-901, Belo Horizonte, MG, Brazil; Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n - Campus Universitário, CEP, 36570-000, Viçosa, MG, Brazil
| | - Pablo Costa Gontijo
- Setor de Agronomia, Instituto Federal Goiano, Rodovia Sul Goiana, Km 01, CEP, 75901-970, Rio Verde, GO, Brazil
| | - Geraldo Célio Brandão
- Escola de Farmácia, Universidade Federal de Ouro Preto, Morro do Cruzeiro, s/n, CEP, 35400-000, Ouro Preto, MG, Brazil
| | - Marisa Alves Nogueira Diaz
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n - Campus Universitário, CEP, 36570-000, Viçosa, MG, Brazil
| | - Alaíde Braga de Oliveira
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP, 31270-901, Belo Horizonte, MG, Brazil
| | - Luciano Gomes Fietto
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n - Campus Universitário, CEP, 36570-000, Viçosa, MG, Brazil
| | - João Paulo Viana Leite
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n - Campus Universitário, CEP, 36570-000, Viçosa, MG, Brazil.
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In vivo antigenotoxic activity of Diplotaxis tenuifolia against cyclophosphamide-induced DNA damage: Relevance of modulation of hepatic ABC efflux transporters. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2018; 836:72-78. [PMID: 30442348 DOI: 10.1016/j.mrgentox.2018.06.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 04/20/2018] [Accepted: 06/01/2018] [Indexed: 02/07/2023]
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Fernández-Bedmar Z, Anter J, Alonso Moraga Á. Anti/genotoxic, longevity inductive, cytotoxic, and clastogenic-related bioactivities of tomato and lycopene. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2018; 59:427-437. [PMID: 29569272 DOI: 10.1002/em.22185] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 02/09/2018] [Accepted: 02/23/2018] [Indexed: 05/17/2023]
Abstract
The aim of this study was to evaluate some biological activities of tomato as well as lycopene and to consider a new nutraceutic value for this fruit regarding to the protection against genetic damage and as a chemopreventive agent. Genotoxicity, DNA-protection against hydrogen peroxide, and lifespan properties of tomato and lycopene were assessed through wing spot test and longevity assay using the Drosophila in vivo model. Additionally, chemopreventive activity was investigated through cytotoxicity, DNA-fragmentation comet and annexin V FITC/PI assays using HL60 in vitro model. Results showed that: (i) tomato and lycopene are not genotoxic and protect against H2 O2 -induced damage; (ii) with respect to the lifespan, tomato and lycopene are harmless at the lowest concentration; (iii) tomato is cytotoxic in a dose-dependent manner, but not lycopene; (iv) tomato and lycopene do not induce internucleosomal DNA-fragmentation although they induce significant clastogenic activity at low level in the leukemia cells. To sum up, tomato is a good candidate to be considered as a nutraceutical substance. Furthermore, synergistic action among other components within tomato matrix could be the cause of the health effects observed in this vegetable, which are not fully explained by lycopene. Environ. Mol. Mutagen. 59:427-437, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Zahira Fernández-Bedmar
- Department of Genetics, Campus Rabanales, Gregor Mendel Building, University of Córdoba, Córdoba, 14071, Spain
| | - Jaouad Anter
- Department of Genetics, Campus Rabanales, Gregor Mendel Building, University of Córdoba, Córdoba, 14071, Spain
| | - Ángeles Alonso Moraga
- Department of Genetics, Campus Rabanales, Gregor Mendel Building, University of Córdoba, Córdoba, 14071, Spain
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In vitro and in vivo toxicity assessment of alginate/eudragit S 100-enclosed chitosan-calcium phosphate-loaded iron saturated bovine lactoferrin nanocapsules (Fe-bLf NCs). Biomed Pharmacother 2017; 97:26-37. [PMID: 29080455 DOI: 10.1016/j.biopha.2017.10.121] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 09/30/2017] [Accepted: 10/22/2017] [Indexed: 11/20/2022] Open
Abstract
Lactoferrin has been known to have antimicrobial properties. This research was conducted to investigate the toxicity of Alginate/EUDRAGIT® S 100-enclosed chitosan-calcium phosphate-loaded Fe-bLf nanocapsules (NCs) by in vitro and in vivo assays. Brine shrimp lethality assay showed that the LC50 value of NCs was more than 1mg/mL which indicated that NCs was not toxic to Brine shrimp. However, the LC50 values for the positive control potassium dichromate at 24h is 64.15μg/mL, which was demostrated the toxic effect against the brine shrimp. MTT cytotoxicity assay also revealed that NCs was not toxic against non-cancerous Vero cell line with IC50 values of 536μg/mL. Genotoxicity studies by comet assay on Vero cells revealed that NCs exerted no significant genotoxic at 100μg/mL without tail or shorter comet tail. Allium cepa root assay carried out at 125, 250, 500 and 1000μg/mL for 24h revealed that the NCs was destitute of significant genotoxic effect under experimental conditions. The results show that there is no significant difference (p>0.05) in mitotic index between the deionized water and NCs treated Allium cepa root tip cells. In conclusion, no toxicity was observed in NCs in this study. Therefore, nontoxic NCs has the good potential to develop as a therapeutic agent.
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p,p'-Methoxyl-diphenyl diselenide-loaded polymeric nanocapsules are chemically stable and do not induce toxicity in mice. Eur J Pharm Biopharm 2017; 117:39-48. [PMID: 28363598 DOI: 10.1016/j.ejpb.2017.03.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 03/25/2017] [Accepted: 03/25/2017] [Indexed: 01/07/2023]
Abstract
Organoselenium compounds have been targeted to new therapeutic tools development due to their pharmacological actions. However, some toxicity issues and physicochemical limitations delay the clinical application of these compounds. The incorporation of organoselenium molecules into nanostructured systems arises as a promising alternative to overcome such restrictions. The current study proposed the characterization of the polymeric nanocapsules of p,p'-methoxyl-diphenyl diselenide [(OMePhSe)2] as well as the evaluation of the in vivo toxicity and biodistribution profile. The nanocapsules, which were composed by medium-chain triglycerides as the oil core and poly(ε-caprolactone) as the polymeric wall, showed nanometric size (236±4), low polydispersity (<0.2), negative zeta potential (-5.4±0.06), neutral pH values (7.2±0.08) and a high encapsulation efficiency (98%). Besides, the nanoencapsulation process increased the (OMePhSe)2 stability. The repeated intragastric administration of (OMePhSe)2 nanoencapsulated (25mg/kg/day during 7days) did not cause any alteration in the oxidative status, hematological parameters, and plasma biochemical markers of cellular damage. Moreover, the (OMePhSe)2 incorporation into nanocapsules increased the selenium concentrations in the tissues (kidneys, liver and plasma) suggesting an improvement in its oral bioavailability.
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Al-Faifi ZIA, Masrahi YS, Aly MS, Al-Turki TA, Dardeer T. Evaluation of Cytotoxic and Genotoxic Effects of Euphorbia Triaculeata Forssk. Extract. Asian Pac J Cancer Prev 2017; 18:771-777. [PMID: 28441785 PMCID: PMC5464498 DOI: 10.22034/apjcp.2017.18.3.771] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Objective: To evaluate the cytotoxic and genotoxic activity of Euphorbia triaculeata Forssk. plant extract from
Jazan region, Saudi Arabia, in an in vitro cancer model, which could be beneficial in anticancer therapy against human
breast cancer cell line (MCF-7), prostate cell line (PC-3), human hepatocellular carcinoma cell line (HEPG2) and normal
breast epithelial cell line (MCF-10A). The human foreskin fibroblast cell line, (Hs68), was also included in the cell
panel. Doxorubicin and 5-Flurouracil, broad-spectrum anticancer drugs, were used as the positive control. Methods:
Cytotoxicity of Euphorbia triaculeata plant extract was investigated by employing MTT assay and the genotoxicity
was assessed by using comet assay. Results: Both toxicity tests exhibited significant toxicity results. In the comet assay,
the Euphorbia triaculeata extract exhibited genotoxic effects against MCF-7 DNA and PC 3 but not on HEPG2 cell
lines in a time-dependent manner by increasing the mean percentage of DNA damage. Euphorbia triaculeata extract
showed significant toxicity against cancer cells. Comparison with positive control signifies that cytotoxicity exhibited
by methanol extract might have moderate activity. Conclusion: The present work confirmed the cytotoxicity and
genotoxicity of Euphorbia triaculeata plant. However, the observed toxicity of this plant extract needs to be confirmed
by additional studies. Based on our results, further examination of the potential anticancer properties of Euphorbia
triaculeata plant species and the identification of the active ingredients of these extracts is warranted.
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Kurdi LAF, Aljeddani FA. Reduction of Dacarbazine cytogenetic effects on somatic cells in male mice using bee glue (Propolis) to manifest the scientific miracles in the Quran. Electron Physician 2016; 8:3015-3023. [PMID: 27790359 PMCID: PMC5074765 DOI: 10.19082/3015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 07/28/2016] [Indexed: 11/20/2022] Open
Abstract
Objective This study was carried out to investigate the ability of Propolis to ameliorate the adverse cytogenetic effects of Dacarbazine on bone marrow cells Methods In this experimental in vivo study, 18 mice were used, divided into four groups: control group; Propolis-treated group (treated with 50mg/kg Propolis); and Dacarbazine-treated group (treated with 3.5mg/kg Dacarbazine). The fourth, fifth, and sixth were treated with Dacarbazine and Propolis as pre 2h, post 2h, and concomitant treatment. After five days, the Bone Marrow (BM) samples were obtained for cytogenetic investigation. Results The in vivo studies revealed that Dacarbazine induced an abnormalities in polychromatic erythrocytes cells (PECs) as increase of cell with micronuclei, while the dual treatment accompanied with improvement of this abnormalities. Conclusions It could be concluded that there are protective effects of Propolis against the adverse effects of Dacarbazine. It could be recommended to use Propolis as an adjuvant with chemotherapeutic agents.
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Affiliation(s)
- Lina Abdul-Fattah Kurdi
- Faculty of Sciences, Department of Biology "Zoology", Al Faisaliah Campus, King Abdul Aziz University, Kingdom of Saudi Arabia
| | - Fatimah Aliyan Aljeddani
- Faculty of Sciences, Department of Biology "Zoology", Al Faisaliah Campus, King Abdul Aziz University, Kingdom of Saudi Arabia
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Gu S, Wu Y, Yang J. Screening of cytoprotectors against methotrexate-induced cytogenotoxicity from bioactive phytochemicals. PeerJ 2016; 4:e1983. [PMID: 27190706 PMCID: PMC4867711 DOI: 10.7717/peerj.1983] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 04/07/2016] [Indexed: 01/14/2023] Open
Abstract
As a well known anti-neoplastic drug, the cytogenotoxicity of methotrexate (MTX) has received more attention in recent years. To develop a new cytoprotector to reduce the risk of second cancers caused by methotrexate, an umu test combined with a micronucleus assay was employed to estimate the cytoprotective effects of ten kinds of bioactive phytochemicals and their combinations. The results showed that allicin, proanthocyanidins, polyphenols, eleutherosides and isoflavones had higher antimutagenic activities than other phytochemicals. At the highest dose tested, the MTX genetoxicity was suppressed by 34.03%∼67.12%. Of all the bioactive phytochemical combinations, the combination of grape seed proanthocyanidins and eleutherosides from Siberian ginseng as well as green tea polyphenols and eleutherosides exhibited stronger antimutagenic effects; the inhibition rate of methotrexate-induced genotoxicity separately reached 74.7 ± 6.5% and 71.8 ± 4.7%. Pretreatment of Kunming mice with phytochemical combinations revealed an obvious reduction in micronucleus and sperm abnormality rates following exposure to MTX (p < 0.01). Moreover, significant increases in thymus and spleen indices were observed in cytoprotector candidates in treated groups. The results indicated that bioactive phytochemicals combinations had the potential to be used as new cytoprotectors.
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Affiliation(s)
- Shaobin Gu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, China
- Luoyang Engineering and Technology Research Center of Microbial Fermentationon, Luoyang, China
| | - Ying Wu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, China
- Henan Engineering Research Center of Food Material, Luoyang, China
| | - Jianbo Yang
- Rice Research Institute, Anhui Academy of Agricultural Science, Hefei, China
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Devi HP, Mazumder PB. Methanolic Extract of Curcuma caesia Roxb. Prevents the Toxicity Caused by Cyclophosphamide to Bone Marrow Cells, Liver and Kidney of Mice. Pharmacognosy Res 2016; 8:43-9. [PMID: 26941535 PMCID: PMC4753759 DOI: 10.4103/0974-8490.171106] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
INTRODUCTION With an ever increasing cause of cancer, it has been recommended to treat with conventional drugs, however because of the side effects caused by the conventional drugs, the research on medicinal plants has been intensified due to their less adverse and toxic effects. OBJECTIVES The primary objective of the present study was to evaluate the protective effect of the medicinal plant Curcuma caesia Roxb. against free radicals ABTS(+) and O2 (-). Also it was aimed to evaluate the protective effect of C.caesia Roxb. against the chemotherapeutic drug Cyclophosphamide and its side effects in liver and kidney. METHODS The rhizomes of the plant was extracted with methanol through soxhlet and its antioxidant activity was tested against ABTS(+) and O2 (-). For antigenotoxic studies, animals were divided into eight groups and micronucleus assay was employed and for biochemical analysis serum sample was collected from the blood and SGOT, SGPT analysis was performed. Also the biochemical analysis was performed from both the liver and kidney. RESULTS The methanolic extract of Curcuma caesia Roxb. was found to scavenge the free radicals ABTS(+) and O2 (-). the micronuclei formation was found to be increased in the positive control group as compared to the negative control group significantly (P<0.002) however increase in the number of micronuclei was found to be decrease with the pretreatment of the extract at different concentrations significantly as compared to the negative control groups (P<0.01, P<0.005, P<0.001). The increased level of serum SGPT and SGOT as well as peroxidation level in both liver and kidney due to treatment of cyclophosphamide was also found to be decreased with the pretreatment of the extract significantly as compared to the positive control groups. There was decreased in the level of endogenous antioxidant such as GSH and GR in the positive control group however decreased level of GSH and GR was found to be increased with the pretreatment of the methanolic extract of C. caesia Roxb. CONCLUSION The present study suggested that the methanolic extract of C. caesia Roxb has not shown any genotoxicity and reduces the genotoxicity caused by cyclophosphamide. It was also to have the protective effects against the liver and kidney. So it could be provided as one of the herbal supplementation in chemoprevention of CP to ameliorate the side effects of it. SUMMARY Cancer is characterized by uncontrolled growth of cells and much research has been done for the past several years from various disciplines for the treatment of cancer but till now no therapy has been discovered. Treatment of cancer with chemotherapeutic drugs has been suggested to prevent cancer cells however they are often limited with their toxicity to normal cells. Therefore it has been suggested that the supplementation of medicinal plants which are rich source of antioxidants can decrease the toxic effect caused by chemotherapeutic drugs. Curcuma caesia Roxb is a medicinal plant which has high antioxidant activity, as per present study, methanolic extract of Curcuma caesia Roxb prevents the toxicity caused by cyclophosphosphamide (chemotherapeutic drug) in bone marrow cells by reducing the micronuclei formation; it also prevents the hepatotoxicity and nephrotoxicity caused by cyclophosphamide, so it can be used as a supplement in cancer treatment with cyclophosphamide.
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Li R, Cao S, Dai J, Wang L, Li L, Wang Y, Yin W, Ye Y. Effect of caffeic acid derivatives on polychlorinated biphenyls induced hepatotoxicity in male mice. J Biomed Res 2014; 28:423-8. [PMID: 25332715 PMCID: PMC4197394 DOI: 10.7555/jbr.28.20120109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/03/2012] [Accepted: 05/31/2014] [Indexed: 01/01/2023] Open
Abstract
Chronic exposure to coplanar polychlorinated biphenyls (PCBs), a potent inducer of toxic reactive oxygen species (ROS), in the environment and food can cause liver diseases. It remains unknown whether caffeic acid derivatives (CADs) exerted protective effect on PCB-induced hepatotoxicity. We sought to evaluate the activities of 3 CADs on PCB169-induced oxidative stress and DNA damage in the liver. Male ICR mice were administered with 1 μmol/mL PCB169 at 5 mL/kg body weight for 2 weeks. The mice were given CADs by gastric gavage for 3 weeks. We found that PCB169 decreased the growth rate and reduced the levels of superoxide dismutase (SOD), glutathione (GSH) and GSH peroxidase (GPx). It increased the liver weight, malondialdehyde (MDA) and 8-hydroxy-2′-deoxyguanosine (8-OHdG) levels and CYP1A1 activity in the liver tissues and plasma of mice (P<0.05). Pretreatment of mice with CADs restored the above parameters to normal levels. There was a synergistic protective effect between CADs in preventing MDA and 8-OHdG formation and inducing CYP1A1 and phase II metabolism enzyme (SOD, GPx) activities (P<0.05). In conclusion, PCB169 induced hepatotoxicity and pretreatment with CADs had synergistic protective effects on liver damage.
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Affiliation(s)
- Ruirui Li
- The First People's Hospital of Suqian, Suqian, Jiangsu 223800, Chian
| | - Shuyuan Cao
- Department of Hygienic Analysis and Detection, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Jinfeng Dai
- Department of Hygienic Analysis and Detection, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Li Wang
- Department of Hygienic Analysis and Detection, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Lei Li
- Department of Hygienic Analysis and Detection, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Yubang Wang
- Department of Hygienic Analysis and Detection, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Wenqin Yin
- Department of Hygienic Analysis and Detection, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Yuting Ye
- Department of Hygienic Analysis and Detection, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
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Ping KY, Darah I, Chen Y, Sasidharan S. Cytotoxicity and genotoxicity assessment of Euphorbia hirta in MCF-7 cell line model using comet assay. Asian Pac J Trop Biomed 2014; 3:692-6. [PMID: 23998008 DOI: 10.1016/s2221-1691(13)60140-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 08/16/2013] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE To evaluate the cytotoxicity and genotoxicity activity of Euphorbia hirta (E. hirta) in MCF-7 cell line model using comet assay. METHODS The cytotoxicity of E. hirta extract was investigated by employing brine shrimp lethality assay and the genotoxicity of E. hirta was assessed by using Comet assay. RESULTS Both toxicity tests exhibited significant toxicity result. In the comet assay, the E. hirta extract exhibited genotoxicity effects against MCF-7 DNA in a time-dependent manner by increasing mean percentage of DNA damage. The extract of E. hirta showed significant toxicity against brine shrimp with an LC₅₀ value of 620.382 µg/mL (24 h). Comparison with positive control potassium dichromate signifies that cytotoxicity exhibited by the methanol extract might have moderate activity. CONCLUSION The present work confirmed the cytotoxicity and genotoxicity of E. hirta. However, the observed toxicity of E. hirta extracts needs to be confirmed in additional studies.
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Affiliation(s)
- Kwan Yuet Ping
- Institute for Research in Molecular Medicine (INFORMM), University Sains Malaysia, 11800, Pulau Pinang, Malaysia
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Tarawneh AH, León F, Ibrahim MA, Pettaway S, McCurdy CR, Cutler SJ. Flavanones from Miconia prasina. PHYTOCHEMISTRY LETTERS 2014; 7:130-132. [PMID: 24976876 PMCID: PMC4070512 DOI: 10.1016/j.phytol.2013.11.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A glycosidic flavanone miconioside C (1) has been isolated from the methanolic extract of the stems of Miconia prasina, together with 7-O-β-D-apiofuranosyl-(1→6)-β-D-glucopyranosylmatteucinol (2), miconioside B (3), matteucinol (4), farrerol (5) and desmethoxymatteucinol (6). Their structures were mainly established by extensive NMR studies (1H NMR, 13C NMR, DEPT, 1H-1H COSY, HSQC, HMBC) and mass spectrometry. The compounds 1- 3 were evaluated for in vitro binding assays using cannabinoid receptors (CB1 and CB2).
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Affiliation(s)
- Amer H. Tarawneh
- Department of Medicinal Chemistry, The University of Mississippi, University, MS 38677, USA
| | - Francisco León
- Department of Medicinal Chemistry, The University of Mississippi, University, MS 38677, USA
| | - Mohammed A. Ibrahim
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Sara Pettaway
- Department of Medicinal Chemistry, The University of Mississippi, University, MS 38677, USA
| | - Christopher R. McCurdy
- Department of Medicinal Chemistry, The University of Mississippi, University, MS 38677, USA
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Stephen J. Cutler
- Department of Medicinal Chemistry, The University of Mississippi, University, MS 38677, USA
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
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Borkotoky D, Panda SK, Sahoo GR, Parija SC. Genotoxicity of nimesulide in Wistar rats. Drug Chem Toxicol 2013; 37:178-83. [PMID: 24116684 DOI: 10.3109/01480545.2013.834357] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
It is mandatory for all new drugs to be tested for their potential genotoxicity in addition to general toxicity testing. Some old drugs have not been tested adequately for their genotoxic effects because these were in use before the local regulations were enforced. According to the material safety database, the toxicological effect of nimesulide is not yet fully understood. The present study therefore aimed to explore the genotoxic potential of nimesulide in Wistar albino rats. Nimesulide at the dose level of 50 (Gr-50), 100 (Gr-100) and 200 (Gr-200) mg/kg body weight (b.w.) was given orally. Each rat in treated groups (Gr-50 to Gr-200; n = 10) and negative control group (Gr-NC; n = 10) were administered orally (p.o.) with nimesulide and normal saline, respectively, for 14 days. Similarly, rats of positive control (Gr-PC; n = 10) were administered with cyclophosphamide (CPA; 20 mg/kg b.w.) intraperitoneally. CPA served as positive control, whereas normal saline served as as negative control. Approximately 1-2 mL of blood was collected from retro-orbital sinus for comet assay and subsequently rats were sacrificed to aspirate the femoral bone marrow for the micronucleus test. Structural chromosomal aberration, micronucleated polychromatic erythrocytes (MnPCEs), polychromatic erythrocytes (PCEs) and comet tail length were calculated using micronucleus assay and comet assay, respectively, which served as markers of genotoxicity. In the present study, it was observed that a significant increase in (1) different classified structural chromosomal aberrations with increase in nimesulide dose, such as gaps (50 mg/kg), gaps, breaks and pulverizations (100 mg/kg) and gaps, breaks, fragments, rings and pulverizations (200 mg/kg) and (2) % MnPCE and comet tail length was observed in animals treated with CPA (p < 0.001) or 200 mg of nimesulide (p < 0.05), as compared to negative control. In conclusion, nimesulide (200 mg/kg b.w.) produced a potential genotoxicity in rats.
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Bulcão RP, de Freitas FA, Dallegrave E, Venturini CG, Baierle M, Durgante J, Sauer E, Cassini C, Cerski CT, Zielinsky P, Salvador M, Pohlmann AR, Guterres SS, Garcia SC. In vivo toxicological evaluation of polymeric nanocapsules after intradermal administration. Eur J Pharm Biopharm 2013; 86:167-77. [PMID: 23643792 DOI: 10.1016/j.ejpb.2013.04.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 03/14/2013] [Accepted: 04/05/2013] [Indexed: 12/11/2022]
Abstract
Polymeric nanocarriers have shown great promise as delivery systems. An alternative strategy has been to explore new delivery routes, such as intradermal (i.d.), that can be used for vaccines and patch-based drug delivery. Despite their many advantages, there are few toxicity studies, especially in vivo. We report a safety assessment of biodegradable poly(ɛ-caprolactone) lipid-core nanocapsules (LNC) with a mean size of 245±10nm following single and repeated intradermal injections to Wistar rats. Suspensions were prepared by interfacial deposition of polymer. The animals (n=6/group) received a single-dose of saline solution (1.2ml/kg) or LNC (7.2×10(12)LNC/kg), or repeated-doses of two controls, saline solution or Tween 80 (0.9ml/kg), or three different concentrations of LNC (1.8, 3.6, and 5.4×10(12)LNC/kg) for 28 consecutive days. Clinical and physiological signs and mortality were observed. Samples of urine, blood, and tissue were used to perform toxicological evaluation. There were no clinical signs of toxicity or mortality, but there was a slight decrease in the relative body weights in the Tween 80-treated group (p<0.01) after repeated administration. No histopathological alterations were observed in tissues or significant changes in blood and urinary biomarkers for tissue damage. Mild alterations in white blood cells count with increases in granulocytes in the Tween-80 group (p<0.05) were found. Genotoxicity was evaluated through the comet assay, and no statistical difference was observed among the groups. Therefore, we conclude that, under the conditions of these experiments, biodegradable LNC did not present appreciable toxicity after 28 consecutive days of intradermal administration and is promising for its future application in vaccines and patch-based devices for enhancing the delivery of drugs.
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Affiliation(s)
- Rachel P Bulcão
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Brazil; Laboratório de Toxicologia (LATOX), Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Fernando A de Freitas
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Brazil; Laboratório de Toxicologia (LATOX), Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Eliane Dallegrave
- Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Cristina G Venturini
- Departamento de Produção e Controle de Medicamentos, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Marília Baierle
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Brazil; Laboratório de Toxicologia (LATOX), Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Juliano Durgante
- Laboratório de Toxicologia (LATOX), Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Elisa Sauer
- Laboratório de Toxicologia (LATOX), Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Instituto de Cardiologia, Fundação Universitária de Cardiologia, Porto Alegre, Brazil
| | - Carina Cassini
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| | - Carlos T Cerski
- Departamento de Patologia, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Paulo Zielinsky
- Instituto de Cardiologia, Fundação Universitária de Cardiologia, Porto Alegre, Brazil
| | - Mirian Salvador
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| | - Adriana R Pohlmann
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Brazil; Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Sílvia S Guterres
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Brazil; Departamento de Produção e Controle de Medicamentos, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Solange C Garcia
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Brazil; Laboratório de Toxicologia (LATOX), Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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Senedese JM, Alves JM, Lima IMDS, de Andrade EAP, Furtado RA, Bastos JK, Tavares DC. Chemopreventive effect of Copaifera langsdorffii leaves hydroalcoholic extract on 1,2-dimethylhydrazine-induced DNA damage and preneoplastic lesions in rat colon. Altern Ther Health Med 2013; 13:3. [PMID: 23295131 PMCID: PMC3606370 DOI: 10.1186/1472-6882-13-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Accepted: 12/19/2012] [Indexed: 01/29/2023]
Abstract
BACKGROUND Natural antioxidants present in common foods and beverages have drawn great attention to cancer prevention due to its health benefits, remarkable lack of toxicity and side effects. Copaifera langsdorffii, known as "copaiba", "capaiva", or "pau-de-óleo", belongs to the Leguminosae family and occurs in fields and grasslands in the northern and northeastern parts of Brazil. Biological studies of Copaifera corroborate its widespread use by the population. This paper describes the effects of C. langsdorffii leaves hydroalcoholic extract on the 1,2-dimethylhydrazine (DMH)-induced DNA damage and aberrant crypt foci (ACF) in the colon of male Wistar rats. METHODS The hydroalcoholic extract of C. langsdorffii was administered to rats by gavage at daily doses of 20, 40 and 80 mg/kg body weight. To evaluate DNA damage by the comet assay, animals received the C. langsdorffii extract for seven days and a single subcutaneous injection (sc) of 1,2-dimethylhydrazine (DMH) at a dose of 40 mg/kg on day 7. Animals were sacrificed 4 h after injection of DMH, to assess DNA damage. For the ACF assay, animals were acclimatized for one week (week 1) and then treated with the C. langsdorffii extract five times a week for four weeks (weeks 2 to 5). The rats received sc injections of DMH (40 mg/kg) on days 2 and 5 of weeks 2 and 3, to induce ACF. Animals were euthanized at week 5; i.e., four weeks after the first DMH treatment. RESULTS Animals treated with different doses of the C. langsdorffii extract combined with DMH had significantly lower frequency of DNA damage as compared with the positive control (animals treated with DMH only). The percentage of reduction in the frequency of DNA damage ranged from 14.30% to 38.8%. The groups treated with 40 and 80 mg/kg C. langsdorffii extract during and after DMH treatment presented significantly lower numbers of ACF and aberrant crypts compared with the control. CONCLUSION The C. langsdorffii extract significantly reduced the extent of DNA damage and ACF induced by DMH, suggesting that the extract has a protective effect against colon carcinogenesis.
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Casanova NA, Ariagno JI, López Nigro MM, Mendeluk GR, de los A Gette M, Petenatti E, Palaoro LA, Carballo MA. In vivo antigenotoxic activity of watercress juice (Nasturtium officinale) against induced DNA damage. J Appl Toxicol 2012; 33:880-5. [PMID: 22488040 DOI: 10.1002/jat.2746] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 02/03/2012] [Accepted: 02/05/2012] [Indexed: 11/08/2022]
Abstract
The present study was carried out to investigate the genotoxicity as well as possible protective activity against damage induced by cyclophosphamide (CP) of the aqueous juice of watercress (Nasturtium officinale, W.T. Aiton) in vivo. Male and female Swiss mice 7-8 weeks old (N = 48) were treated by gavage with 1 g kg(-1) body weight and 0.5 g kg(-1) body weight of watercress juice during 15 consecutive days. Genotoxicity and its possible protective effect were tested by the comet assay in peripheral blood cells and the micronucleus test in bone marrow. In addition, biopsies of the bladder, epididymis and testicles of mice were performed to extend the experimental design. Watercress juice per se did not induce genetic damage according to the comet assay and micronucleus study, exhibiting a protective activity against CP (P < 0.05 and P < 0.001, respectively). The comparative analysis of bladder histological changes obtained in the watercress plus CP group against those treated with CP alone suggests a probable protective effect. Further studies are needed in order to establish the protective role of watercress juice against DNA damage.
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Affiliation(s)
- Natalia A Casanova
- Citogenética Humana y Genética Toxicológica, Instituto de Fisiopatología y Bioquímica Clínica, Departamento de Bioquímica Clínica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, 1113 CABA, Buenos Aires, Argentina
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Portmann E, Nigro MML, Reides CG, Llesuy S, Ricco RA, Wagner ML, Gurni AA, Carballo MA. Aqueous extracts of Lippia turbinata and Aloysia citriodora (Verbenaceae): assessment of antioxidant capacity and DNA damage. Int J Toxicol 2012; 31:192-202. [PMID: 22427199 DOI: 10.1177/1091581812436726] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of the present work was to make a contribution to the knowledge of aqueous extracts of Lippia turbinata and Aloysia citriodora (Verbenaceae; infusion and decoction) in relation with the establishment of its antioxidant activity and lack of DNA damage, for its potential use in therapeutics. The cytogenotoxic profile was evaluated through genotoxic biomarkers such as mitotic index, cellular proliferation kinetics, sister chromatid exchanges, single-cell gel electrophoresis assay, and micronucleus test in human peripheral blood lymphocyte cultures. No statistical differences were found (P > .05) between control and exposed cultures, even between both aqueous extracts. The total antioxidant capacity was shown to be higher in the decoction than in the infusion and both aqueous extracts protected against protein carbonylation and lipid peroxidation, the decoction being more efficient than the infusion (P < .005). These results suggest the safe use of these medicinal plants as chemoecologic agents in therapeutics.
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Affiliation(s)
- Erika Portmann
- CIGETOX-Citogenética y Genética Toxicológica-INFIBIOC, Instituto de Fisiopatología y Bioquímica Clínica, Facultad de Farmacia y Bioquímica, UBA, Buenos Aires, Argentina
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Pieroni LG, de Rezende FM, Ximenes VF, Dokkedal AL. Antioxidant activity and total phenols from the methanolic extract of Miconia albicans (Sw.) Triana leaves. Molecules 2011; 16:9439-50. [PMID: 22075573 PMCID: PMC6264309 DOI: 10.3390/molecules16119439] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 10/20/2011] [Accepted: 11/02/2011] [Indexed: 11/16/2022] Open
Abstract
Miconia is one of the largest genus of the Melastomataceae, with approximately 1,000 species. Studies aiming to describe the diverse biological activities of the Miconia species have shown promising results, such as analgesic, antimicrobial and trypanocidal properties. M. albicans leaves were dried, powdered and extracted to afford chloroformic and methanolic extracts. Total phenolic contents in the methanolic extract were determined according to modified Folin-Ciocalteu method. The antioxidant activity was measured using AAPH and DPPH radical assays. Chemical analysis was performed with the n-butanol fraction of the methanolic extract and the chloroformic extract, using different chromatographic techniques (CC, HPLC). The structural elucidation of compounds was performed using 500 MHz NMR and HPLC methods. The methanolic extract showed a high level of total phenolic contents; the results with antioxidant assays showed that the methanolic extract, the n-butanolic fraction and the isolated flavonoids from M. albicans had a significant scavenging capacity against AAPH and DPPH. Quercetin, quercetin-3-O-glucoside, rutin, 3-(E)-p-coumaroyl-α-amyrin was isolated from the n-butanolic fraction and α-amyrin, epi-betulinic acid, ursolic acid, epi-ursolic acid from the chloroformic extract. The results presented in this study demonstrate that M. albicans is a promising species in the search for biologically active compounds.
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Affiliation(s)
- Laís Goyos Pieroni
- Biology Department, Faculty of Sciences, Unesp – Univ Estadual Paulista, c.p. 473, 17033-360 Bauru, SP, Brazil
| | | | - Valdecir Farias Ximenes
- Chemistry Departament, Faculty of Sciences, Unesp – Univ Estadual Paulista, c.p. 473, 17033-360 Bauru, SP, Brazil
| | - Anne Lígia Dokkedal
- Biology Department, Faculty of Sciences, Unesp – Univ Estadual Paulista, c.p. 473, 17033-360 Bauru, SP, Brazil
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de Oliveira LRC, Cezário GAG, de Lima CRG, Nicolete VC, Peresi E, de Síbio MT, Picka MCM, Calvi SA. DNA damage and nitric oxide production in mice following infection with L. chagasi. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2011; 723:177-81. [DOI: 10.1016/j.mrgentox.2011.04.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Revised: 04/13/2011] [Accepted: 04/28/2011] [Indexed: 01/28/2023]
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Mara Serpeloni J, Mazzaron Barcelos GR, Prates Mori M, Yanagui K, Vilegas W, Aparecida Varanda E, de Syllos Cólus IM. Cytotoxic and mutagenic evaluation of extracts from plant species of the Miconia genus and their influence on doxorubicin-induced mutagenicity: An in vitro analysis. ACTA ACUST UNITED AC 2011; 63:499-504. [DOI: 10.1016/j.etp.2010.03.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2009] [Revised: 03/22/2010] [Accepted: 03/25/2010] [Indexed: 10/19/2022]
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Genotoxicity assessment of the antimalarial compound artesunate in somatic cells of mice. Food Chem Toxicol 2011; 49:1335-9. [DOI: 10.1016/j.fct.2011.03.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Revised: 03/09/2011] [Accepted: 03/13/2011] [Indexed: 11/23/2022]
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Melo-Cavalcante AADC, Dantas SMMDM, Leite ADS, Matos LA, e Sousa JMDC, Picada JN, da Silva J. In vivo antigenotoxic and anticlastogenic effects of fresh and processed cashew (Anacardium occidentale) apple juices. J Med Food 2011; 14:792-8. [PMID: 21612456 DOI: 10.1089/jmf.2010.0153] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Cashew apple juice and cajuina (processed juice) are drinks widely consumed in northeast Brazil. In vitro studies have shown that both juices have antimutagenic activity as well as antioxidant effects. These juices contain vitamins, carotenoids, and phenolic compounds. This in vivo study assessed the antigenotoxic and anticlastogenic effects of both drinks against genotoxicity and mutagenicity induced by cyclophosphamide. The comet, micronucleus, and chromosome aberrations tests were used. Male Swiss mice were divided into 6 groups (5 animals per group) and received the following by gavage, 0.15 mL/10 g body weight: group 1, water; group 2, cashew apple juice; group 3, cajuina juice; group 4, cashew apple juice and cyclophosphamide (50 mg/kg); group 5, cajuina juice and cyclophosphamide; group 6: cyclophosphamide. Both drinks significantly reduced DNA damage of peripheral blood cells (P<.001), with modulation percentages of 60.82% (cashew apple juice) and 82.19% (cajuina) when compared with the cyclophosphamide group. Cashew apple juice and cajuina modulated cyclophosphamide-induced micronucleus frequency, with up to 80.0% inhibition. Cashew apple juice and cajuina decreased the average number of cells with chromosome aberrations in bone marrow of mice by 53% and 65%, respectively. These findings demonstrate the high antigenotoxic and anticlastogenic potential of cashew apple juice and cajuina in vivo, which can be related to the antioxidant compounds found in both drinks.
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Antigenotoxic Activity of Watercress Extract in an In Vitro
Mammalian System using Comet Assay. Phytother Res 2011; 25:1743-6. [DOI: 10.1002/ptr.3474] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 02/07/2011] [Accepted: 02/10/2011] [Indexed: 11/07/2022]
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Kirkland D, Reeve L, Gatehouse D, Vanparys P. A core in vitro genotoxicity battery comprising the Ames test plus the in vitro micronucleus test is sufficient to detect rodent carcinogens and in vivo genotoxins. Mutat Res 2011; 721:27-73. [PMID: 21238603 DOI: 10.1016/j.mrgentox.2010.12.015] [Citation(s) in RCA: 161] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 11/12/2010] [Accepted: 12/15/2010] [Indexed: 01/27/2023]
Abstract
In vitro genotoxicity testing needs to include tests in both bacterial and mammalian cells, and be able to detect gene mutations, chromosomal damage and aneuploidy. This may be achieved by a combination of the Ames test (detects gene mutations) and the in vitro micronucleus test (MNvit), since the latter detects both chromosomal aberrations and aneuploidy. In this paper we therefore present an analysis of an existing database of rodent carcinogens and a new database of in vivo genotoxins in terms of the in vitro genotoxicity tests needed to detect their in vivo activity. Published in vitro data from at least one test system (most were from the Ames test) were available for 557 carcinogens and 405 in vivo genotoxins. Because there are fewer publications on the MNvit than for other mammalian cell tests, and because the concordance between the MNvit and the in vitro chromosomal aberration (CAvit) test is so high for clastogenic activity, positive results in the CAvit test were taken as indicative of a positive result in the MNvit where there were no, or only inadequate data for the latter. Also, because Hprt and Tk loci both detect gene-mutation activity, a positive Hprt test was taken as indicative of a mouse-lymphoma Tk assay (MLA)-positive, where there were no data for the latter. Almost all of the 962 rodent carcinogens and in vivo genotoxins were detected by an in vitro battery comprising Ames+MNvit. An additional 11 carcinogens and six in vivo genotoxins would apparently be detected by the MLA, but many of these had not been tested in the MNvit or CAvit tests. Only four chemicals emerge as potentially being more readily detected in MLA than in Ames+MNvit--benzyl acetate, toluene, morphine and thiabendazole--and none of these are convincing cases to argue for the inclusion of the MLA in addition to Ames+MNvit. Thus, there is no convincing evidence that any genotoxic rodent carcinogens or in vivo genotoxins would remain undetected in an in vitro test battery consisting of Ames+MNvit.
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Affiliation(s)
- David Kirkland
- Kirkland Consulting, PO Box 79, Tadcaster LS24 0AS, United Kingdom.
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Serpeloni JM, Grotto D, Mercadante AZ, de Lourdes Pires Bianchi M, Antunes LMG. Lutein improves antioxidant defense in vivo and protects against DNA damage and chromosome instability induced by cisplatin. Arch Toxicol 2010; 84:811-22. [DOI: 10.1007/s00204-010-0576-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Accepted: 07/14/2010] [Indexed: 11/28/2022]
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Narayan BH, Tatewaki N, Giridharan VV, Nishida H, Konishi T. Modulation of doxorubicin-induced genotoxicity by squalene in Balb/c mice. Food Funct 2010; 1:174-9. [DOI: 10.1039/c0fo00102c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Evaluation of the genotoxic and antigenotoxic effects after acute and subacute treatments with açai pulp (Euterpe oleracea Mart.) on mice using the erythrocytes micronucleus test and the comet assay. Mutat Res 2009; 695:22-8. [PMID: 19892033 DOI: 10.1016/j.mrgentox.2009.10.009] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2009] [Revised: 09/25/2009] [Accepted: 10/20/2009] [Indexed: 11/20/2022]
Abstract
Açai, the fruit of a palm native to the Amazonian basin, is widely distributed in northern South America, where it has considerable economic importance. Whereas individual polyphenolics compounds in açai have been extensively evaluated, studies of the intact fruit and its biological properties are lacking. Therefore, the present study was undertaken to investigate the in vivo genotoxicity of açai and its possible antigenotoxicity on doxorubicin (DXR)-induced DNA damage. The açai pulp doses selected were 3.33, 10.0 and 16.67g/kg b.w. administered by gavage alone or prior to DXR (16mg/kg b.w.) administered by intraperitoneal injection. Swiss albino mice were distributed in eight groups for acute treatment with açai pulp (24h) and eight groups for subacute treatment (daily for 14 consecutive days) before euthanasia. The negative control groups were treated in a similar way. The results of chemical analysis suggested the presence of carotenoids, anthocyanins, phenolic, and flavonoids in açai pulp. The endpoints analyzed were micronucleus induction in bone marrow and peripheral blood cells polychromatic erythrocytes, and DNA damage in peripheral blood, liver and kidney cells assessed using the alkaline (pH >13) comet assay. There were no statistically significant differences (p>0.05) between the negative control and the groups treated with the three doses of açai pulp alone in all endpoints analyzed, demonstrating the absence of genotoxic effects. The protective effects of açai pulp were observed in both acute and subacute treatments, when administered prior to DXR. In general, subacute treatment provided greater efficiency in protecting against DXR-induced DNA damage in liver and kidney cells. These protective effects can be explained as the result of the phytochemicals present in açai pulp. These results will be applied to the developmental of food with functional characteristics, as well as to explore the characteristics of açai as a health promoter.
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