1
|
Identification of DNA Repair-Related Genes Predicting Clinical Outcome for Thyroid Cancer. JOURNAL OF ONCOLOGY 2022; 2022:8809469. [PMID: 35035484 PMCID: PMC8758253 DOI: 10.1155/2022/8809469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/27/2021] [Accepted: 12/28/2021] [Indexed: 11/20/2022]
Abstract
Recent studies have demonstrated the utility and superiority of DNA repair-related genes as novel biomarkers for cancer diagnosis, prognosis, and therapy. Here, we aimed to screen the potential survival-related DNA repair-related genes in thyroid cancer (TC). TCGA datasets were utilized to analyze the differentially expressed DNA repair-related genes between TC and nontumor tissues. The K–M approach and univariate analysis were employed to screen survival-related genes. RT-PCR was employed to examine the expression of DNA repair-related genes in TC samples and matched noncancer samples. CCK-8 analyses were used to determine cellular proliferation. Herein, our team discovered that the expression of four DNA repair-related genes was remarkably upregulated in TC samples in contrast to noncancer samples. Survival assays identified 14 DNA repair-related genes. In our cohort, we observed that the expression of TAF13 and DCTN4 was distinctly elevated in TC specimens in contrast to nontumor specimens. Moreover, knockdown of TAF13 and DCTN4 was observed to inhibit the TC cellular proliferation. Overall, the upregulation of TAF13 and DCTN4 is related to decreased overall survival in TC patients. Therefore, the assessment of TAF13 and DCTN4 expression may be useful for predicting prognosis in these patients.
Collapse
|
2
|
Cardoso EF, Giacomello TF, Rocha de Oliveira LL, da Silva TA, de Jesus Chaves Neto AM, Da Silva Mota GV, Souza Siqueira MR, Paranhos Costa FL. A Combined Molecular Docking and Density Functional Theory Nuclear Magnetic Resonance Study of Trans-Dehydrocrotonin Interacting with COVID-19 Main Protease and Severe Acute Respiratory Syndrome Coronavirus 2 3C-Like Protease. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2021; 21:5399-5407. [PMID: 33980349 DOI: 10.1166/jnn.2021.19475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
For the development of drugs that treat SARS-CoV-2, the fastest way is to find potential molecules from drugs already on the market. Unfortunately, there is currently no specific drug or treatment for COVID-19. Among all structural proteins in SARS-CoV, the spike protein is the main antigenic component responsible for inducing host immune responses, neutralizing antibodies, and/or protecting immunity against virus infection. Molecular docking is a technique used to predict whether a molecule will bind to another. It is usually a protein to another or a protein to a binding compound. Natural products are potential binders in several studies involving coronavirus. The structure of the ligand plays a fundamental role in its biological properties. The nuclear magnetic resonance technique is one of the most powerful tools for the structural determination of ligands from the origin of natural products. Nowadays, molecular modeling is an important accessory tool to experimentally got nuclear magnetic resonance data. In the present work, molecular docking studies aimed is to investigate the limiting affinities of trans-dehydrocrotonin molecule and to identify the main amino acid residues that could play a fundamental role in their mechanism of action of the SARS-CoV spike protein. Another aim of this work is all about to evaluate 10 hybrid functionalities, along with three base pairs using computational programs to discover which ones are more reliable with the experimental result the best computational method to study organic compounds. We compared the results between the mean absolute deviation (MAD) and root-mean-square deviation (RMSD) of the molecules, and the smallest number between them was the best result. The positions assumed by the ligands in the active site of the spike glycoprotein allow assuming associations with different local amino acids.
Collapse
Affiliation(s)
| | | | | | - Tiago Arouche da Silva
- Natural Science Faculty, Federal University of Para, ICEN UFPA Belém-PA - 66075-110, Brasil
| | | | | | | | | |
Collapse
|
3
|
Carnizello AP, Alves JM, Pereira DE, Campos JCL, Barbosa MIF, Batista AA, Tavares DC. Study of the cytotoxic and genotoxic potential of the carbonyl ruthenium(II) compound,
ct‐
[RuCl(CO)(dppb)(bipy)]PF
6
[dppb = 1,4‐bis(diphenylphosphino)butane and bipy = 2,2′‐bipyridine], by in vitro and in vivo assays. J Appl Toxicol 2018; 39:630-638. [DOI: 10.1002/jat.3753] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 09/24/2018] [Accepted: 10/15/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Andréa P. Carnizello
- Departamento de QuímicaUniversidade Federal de São Carlos CP 676, CEP 13565‐905 São Carlos SP Brazil
- Laboratório de MutagêneseUniversidade de Franca Pq. Universitario, CEP 14404‐600 Franca SP Brazil
| | - Jacqueline M. Alves
- Laboratório de MutagêneseUniversidade de Franca Pq. Universitario, CEP 14404‐600 Franca SP Brazil
| | - Daiane E. Pereira
- Laboratório de MutagêneseUniversidade de Franca Pq. Universitario, CEP 14404‐600 Franca SP Brazil
| | - Jacqueline C. L. Campos
- Laboratório de MutagêneseUniversidade de Franca Pq. Universitario, CEP 14404‐600 Franca SP Brazil
| | - Marília I. F. Barbosa
- Departamento de QuímicaUniversidade Federal de São Carlos CP 676, CEP 13565‐905 São Carlos SP Brazil
| | - Alzir A. Batista
- Departamento de QuímicaUniversidade Federal de São Carlos CP 676, CEP 13565‐905 São Carlos SP Brazil
| | - Denise C. Tavares
- Laboratório de MutagêneseUniversidade de Franca Pq. Universitario, CEP 14404‐600 Franca SP Brazil
| |
Collapse
|
4
|
Navarro SD, Pessatto LR, Meza A, de Oliveira EJT, Auharek SA, Vilela LC, de Lima DP, de Azevedo RB, Kassuya CAL, Cáceres OIA, da Silva Gomes R, Beatriz A, Oliveira RJ, Martines MAU. Resorcinolic lipid 3-heptyl-3,4,6-trimethoxy-3H-isobenzofuran-1-one is a strategy for melanoma treatment. Life Sci 2018; 209:300-312. [PMID: 30102904 DOI: 10.1016/j.lfs.2018.08.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 08/02/2018] [Accepted: 08/08/2018] [Indexed: 12/12/2022]
Abstract
AIMS Previous studies performed by our research group indicated that cytosporone analogues are capable of prevent or repair DNA damages. This work presents the evaluation of the activity of AMS35AA for metastatic murine melanoma cells (B16F10) in experimental model in vitro and, in pre-clinic assay of metastatic melanoma in vivo, using mice lineage C57BL/6. MAIN METHODS In vitro assays were performed: MTT and comet assay, flow cytometry evaluation, gene expression assay by RT-PCR, qualitative evaluation of cell death using B16F10 cells. In vivo assays: micronucleus and comet assay, splenic phagocytosis, melanoma murine model and histopathological analysis, using mice lineage C57BL/6 (n = 20). KEY FINDINGS In vitro results performed by MTT assay showed that AMS35AA is cytotoxic for B16F10 cells (p < 0.05). Based on comet assay the genotoxicity of the IC50 was determined (95.83 μg/mL) (p < 0.05). These data were corroborated by flow cytometry analysis after the treatment with AMS35AA, which indicates the cellular death by apoptosis (p < 0.05) and increasing of ATR, p53, p21 and GADD45 gene expressions verified using RT-PCR. With respect to in vivo results, it was observed that AMS35AA did not show genotoxic activity. Data of tumor volume ex vivo indicate reduction of tumor for the treated animals with AMS35AA up to 15.84×, which is superior to Dacarbazina (50 mg/Kg, p.c.; i.p.). SIGNIFICANCE In summary, the study showed that AMS35AA reveals relevant results regarding to cytotoxicity of B16F10 murine melanoma cells, inducing death by apoptosis via mitochondrial and/or mediated by DNA damages.
Collapse
Affiliation(s)
- Stephanie Dynczuki Navarro
- Graduate Program in Biotechnology and Biodiversity, Pro Midwest Network, Faculty of Pharmaceutical Sciences, Food and Nutrition, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Lucas Roberto Pessatto
- Research Center in Stem Cells, Cell Therapy and Genetic Toxicology (CeTroGen), "Maria Aparecida Pedrossian" University Hospital, Campo Grande, Mato Grosso do Sul, Brazil; Graduate Program in Genetics and Molecular Biology, General Biology Department, Biological Sciences Center, State University of Londrina, Londrina, Paraná, Brazil
| | - Alisson Meza
- Graduate Program in Chemistry, Chemistry Institute, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Edwin José Torres de Oliveira
- Research Center in Stem Cells, Cell Therapy and Genetic Toxicology (CeTroGen), "Maria Aparecida Pedrossian" University Hospital, Campo Grande, Mato Grosso do Sul, Brazil; Graduate Program in Genetics and Molecular Biology, General Biology Department, Biological Sciences Center, State University of Londrina, Londrina, Paraná, Brazil
| | - Sarah Alves Auharek
- Faculty of Medicine, Federal University of Jequitinhonha and Mucuri Valleys, Teófilo Otoni, Minas Gerais, Brazil
| | - Lizia Colares Vilela
- Faculty of Medicine, Federal University of Jequitinhonha and Mucuri Valleys, Teófilo Otoni, Minas Gerais, Brazil
| | - Dênis Pires de Lima
- Graduate Program in Chemistry, Chemistry Institute, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Ricardo Bentes de Azevedo
- Genetics and Morphology Department, Biosciences Institute, Brasilia University, Brasilia, Federal District, Brazil
| | | | - Osmar Ignacio Ayala Cáceres
- Graduate Program in Chemistry, Chemistry Institute, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Roberto da Silva Gomes
- Graduate Program in Chemistry, Chemistry Institute, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil; Synthesis and Molecular Modification Laboratory, Faculty of Exact Sciences and Technology, Federal University of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil
| | - Adilson Beatriz
- Graduate Program in Chemistry, Chemistry Institute, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Rodrigo Juliano Oliveira
- Research Center in Stem Cells, Cell Therapy and Genetic Toxicology (CeTroGen), "Maria Aparecida Pedrossian" University Hospital, Campo Grande, Mato Grosso do Sul, Brazil; Graduate Program in Genetics and Molecular Biology, General Biology Department, Biological Sciences Center, State University of Londrina, Londrina, Paraná, Brazil; Graduate Program in Health and Development of Midwest Region, Faculty of Medicine "Dr Hélio Mandetta", Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil.
| | - Marco Antonio Utrera Martines
- Graduate Program in Biotechnology and Biodiversity, Pro Midwest Network, Faculty of Pharmaceutical Sciences, Food and Nutrition, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil; Graduate Program in Chemistry, Chemistry Institute, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil.
| |
Collapse
|
5
|
Marques CMS, Nunes EA, Lago L, Pedron CN, Manieri TM, Sato RH, Oliveira VX, Cerchiaro G. Generation of Advanced Glycation End-Products (AGEs) by glycoxidation mediated by copper and ROS in a human serum albumin (HSA) model peptide: reaction mechanism and damage in motor neuron cells. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2017; 824:42-51. [PMID: 29150049 DOI: 10.1016/j.mrgentox.2017.10.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 10/17/2017] [Accepted: 10/17/2017] [Indexed: 06/07/2023]
Abstract
Glucose, in the presence of reactive oxygen species (ROS), acts as an as an oxidative agent and drives deleterious processes in Diabetes Mellitus. We have studied the mechanism and the toxicological effects of glucose-dependent glycoxidation reactions driven by copper and ROS, using a model peptide based on the exposed sequence of Human Serum Albumin (HSA) and containing a lysine residue susceptible to copper complexation. The main products of these reactions are Advanced Glycation End-products (AGEs). Carboxymethyl lysine and pyrraline condensed on the model peptide, generating a Modified Peptide (MP). These products were isolated, purified, and tested on cultured motor neuron cells. We observed DNA damage, enhancement of membrane roughness, and formation of domes. We evaluated nuclear abnormalities by the cytokinesis-blocked micronucleus assay and we measured cytostatic and cytotoxic effects, chromosomal breakage, nuclear abnormalities, and cell death. AGEs formed by glycoxidation caused large micronucleus aberrations, apoptosis, and large-scale nuclear abnormalities, even at low concentrations.
Collapse
Affiliation(s)
| | - Emilene Arusievicz Nunes
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Larissa Lago
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Cibele Nicolaski Pedron
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Tânia Maria Manieri
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Roseli Hiromi Sato
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Vani Xavier Oliveira
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil
| | - Giselle Cerchiaro
- Center for Natural Sciences and Humanities, Federal University of ABC - UFABC, Avenida dos Estados 5001, 09210-580, Santo André, SP, Brazil.
| |
Collapse
|
6
|
Phytochemical analysis and anti-inflammatory evaluation of compounds from an aqueous extract of Croton cajucara Benth. J Pharm Biomed Anal 2017; 145:821-830. [PMID: 28826140 DOI: 10.1016/j.jpba.2017.07.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 07/11/2017] [Accepted: 07/27/2017] [Indexed: 12/12/2022]
Abstract
Croton cajucara Benth. is a medicinal plant popularly used in the Brazilian Amazonia, where it is known as sacaca, being consumed as tea, decoction or infusion of the leaves and stem bark. From a decoction of the leaves, a comprehensive phytochemical analysis was developed by liquid chromatography-mass spectrometry. Many compounds were identified for the first time in C. cajucara, such as O-glycosides of kaempferol and quercetin, flavonoid-C-glycosides, tannins and cinnamic acid derivatives. These compounds were fractionated by polarity and assayed for their anti-inflammatory activity, using a model of mice edema, induced by an intraplantar injection of carrageenan. All fractions exhibited anti-inflammatory properties.
Collapse
|
7
|
Lago L, Nunes EA, Vigato AA, Souza VCO, Barbosa F, Sato JR, Batista BL, Cerchiaro G. Flow of essential elements in subcellular fractions during oxidative stress. Biometals 2017; 30:83-96. [PMID: 28083799 DOI: 10.1007/s10534-016-9988-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 12/27/2016] [Indexed: 12/31/2022]
Abstract
Essential trace elements are commonly found in altered concentrations in the brains of patients with neurodegenerative diseases. Many studies in trace metal determination and quantification are conducted in tissue, cell culture or whole brain. In the present investigation, we determined by ICP-MS Fe, Cu, Zn, Ca, Se, Co, Cr, Mg, and Mn in organelles (mitochondria, nuclei) and whole motor neuron cell cultured in vitro. We performed experiments using two ways to access oxidative stress: cell treatments with H2O2 or Aβ-42 peptide in its oligomeric form. Both treatments caused accumulation of markers of oxidative stress, such as oxidized proteins and lipids, and alteration in DNA. Regarding trace elements, cells treated with H2O2 showed higher levels of Zn and lower levels of Ca in nuclei when compared to control cells with no oxidative treatments. On the other hand, cells treated with Aβ-42 peptide in its oligomeric form showed higher levels of Mg, Ca, Fe and Zn in nuclei when compared to control cells. These differences showed that metal flux in cell organelles during an intrinsic external oxidative condition (H2O2 treatment) are different from an intrinsic external neurodegenerative treatment.
Collapse
Affiliation(s)
- Larissa Lago
- Center for Natural Sciences and Humanities, Universidade Federal do ABC - UFABC, Santo André, SP, Brazil
| | - Emilene A Nunes
- Center for Natural Sciences and Humanities, Universidade Federal do ABC - UFABC, Santo André, SP, Brazil
| | - Aryane A Vigato
- Center for Natural Sciences and Humanities, Universidade Federal do ABC - UFABC, Santo André, SP, Brazil
| | - Vanessa C O Souza
- Department of Clinical Analysis, Toxicological and Bromatological, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo - USP, Ribeirão Prêto, Brazil
| | - Fernando Barbosa
- Department of Clinical Analysis, Toxicological and Bromatological, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo - USP, Ribeirão Prêto, Brazil
| | - João R Sato
- Center for Mathematics, Computation, and Cognition, Universidade Federal do ABC - UFABC, São Bernardo do Campo, SP, Brazil
| | - Bruno L Batista
- Center for Natural Sciences and Humanities, Universidade Federal do ABC - UFABC, Santo André, SP, Brazil
| | - Giselle Cerchiaro
- Center for Natural Sciences and Humanities, Universidade Federal do ABC - UFABC, Santo André, SP, Brazil.
| |
Collapse
|
8
|
Nicolella HD, Neto FR, Corrêa MB, Lopes DH, Rondon EN, Dos Santos LFR, de Oliveira PF, Damasceno JL, Acésio NO, Turatti ICC, Tozatti MG, Cunha WR, Furtado RA, Tavares DC. Toxicogenetic study of Persea americana fruit pulp oil and its effect on genomic instability. Food Chem Toxicol 2017; 101:114-120. [PMID: 28088491 DOI: 10.1016/j.fct.2017.01.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 12/13/2016] [Accepted: 01/11/2017] [Indexed: 10/20/2022]
Abstract
Persea americana Mill., commonly known as avocado, is a tree native to Central America that is widely used as a food source and for the treatment of diseases. This plant has various biological properties such as analgesic, anti-inflammatory and total cholesterol-lowering activity. In view of its pharmacological potential, we conducted a toxicogenetic study of the fruit pulp oil of P. americana (PAO) and investigated its influence on genotoxicity induced by methyl methanesulfonate (MMS) and doxorubicin. V79 cells and Swiss mice were used for the assays. The results showed no genotoxic effects of PAO in the in vitro or in vivo test systems. However, the highest PAO dose tested led to an increase in the levels of aspartate aminotransferase, indicating hepatic/tissue damage. This effect may be related to high concentrations of palmitic acid, the main component of PAO. Furthermore, PAO was effective in reducing the chromosome damage induced by MMS and doxorubicin. These results contribute to the safety assessment of PAO as a medicinal plant for human use.
Collapse
Affiliation(s)
- Heloiza Diniz Nicolella
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Francisco Rinaldi Neto
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Mariana Beltrame Corrêa
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Danillo Henrique Lopes
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Edilaura Nunes Rondon
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Luiz Felipe Ribeiro Dos Santos
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Pollyanna Francielli de Oliveira
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Jaqueline Lopes Damasceno
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Nathália Oliveira Acésio
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Izabel Cristina Casanova Turatti
- Departamento de Física e Química da Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café, s/n - Vila Monte Alegre, 14040-020, Ribeirão Preto, São Paulo, Brazil
| | - Marcos Gomide Tozatti
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Wilson Roberto Cunha
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Ricardo Andrade Furtado
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Denise Crispim Tavares
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil.
| |
Collapse
|
9
|
Cooper DJ, Chen IC, Hernandez C, Wang Y, Walter CA, McCarrey JR. Pluripotent cells display enhanced resistance to mutagenesis. Stem Cell Res 2017; 19:113-117. [PMID: 28129601 DOI: 10.1016/j.scr.2016.12.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/19/2016] [Accepted: 12/31/2016] [Indexed: 10/20/2022] Open
Abstract
Pluripotent cells have been reported to exhibit lower frequencies of point mutations and higher levels of DNA repair than differentiated cells. This predicts that pluripotent cells are less susceptible to mutagenic exposures than differentiated cells. To test this prediction, we used a lacI mutation-reporter transgene system to assess the frequency of point mutations in multiple lines of mouse pluripotent embryonic stem cells and induced pluripotent cells, as well as in multiple lines of differentiated fibroblast cells, before and after exposure to a moderate dose of the mutagen, methyl methanesulfonate. We also measured levels of key enzymes in the base excision repair (BER) pathway in each cell line before and after exposure to the mutagen. Our results confirm that pluripotent cells normally maintain lower frequencies of point mutations than differentiated cells, and show that differentiated cells exhibit a large increase in mutation frequency following a moderate mutagenic exposure, whereas pluripotent cells subjected to the same exposure show no increase in mutations. This result likely reflects the higher levels of BER proteins detectable in pluripotent cells prior to exposure and supports our thesis that maintenance of enhanced genetic integrity is a fundamental characteristic of pluripotent cells.
Collapse
Affiliation(s)
- Daniel J Cooper
- Department of Biology, University of Texas at San Antonio, San Antonio, TX 78249, United States
| | - I-Chung Chen
- Department of Biology, University of Texas at San Antonio, San Antonio, TX 78249, United States
| | - Christine Hernandez
- Department of Biology, University of Texas at San Antonio, San Antonio, TX 78249, United States
| | - Yufeng Wang
- Department of Biology, University of Texas at San Antonio, San Antonio, TX 78249, United States
| | - Christi A Walter
- Department of Cell Systems & Anatomy, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, United States
| | - John R McCarrey
- Department of Biology, University of Texas at San Antonio, San Antonio, TX 78249, United States.
| |
Collapse
|
10
|
Silva VDS, Abreu EMDC, Nicolau RA, Soares CP. Comparative analysis of different doses of coherent light (laser) and non-coherent light (light-emitting diode) on cellular necrosis and apoptosis: a study in vitro. ACTA ACUST UNITED AC 2016. [DOI: 10.1590/2446-4740.00115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
11
|
Segura FR, Nunes EA, Paniz FP, Paulelli ACC, Rodrigues GB, Braga GÚL, Dos Reis Pedreira Filho W, Barbosa F, Cerchiaro G, Silva FF, Batista BL. Potential risks of the residue from Samarco's mine dam burst (Bento Rodrigues, Brazil). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 218:813-825. [PMID: 27524249 DOI: 10.1016/j.envpol.2016.08.005] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 08/02/2016] [Accepted: 08/03/2016] [Indexed: 06/06/2023]
Abstract
On November 5th, 2015, Samarco's iron mine dam - called Fundão - spilled 50-60 million m3 of mud into Gualaxo do Norte, a river that belongs to Rio Doce Basin. Approximately 15 km2 were flooded along the rivers Gualaxo do Norte, Carmo and Doce, reaching the Atlantic Ocean on November 22nd, 2015. Six days after, our group collected mud, soil and water samples in Bento Rodrigues (Minas Gerais, Brazil), which was the first impacted area. Overall, the results, water samples - potable and surface water from river - presented chemical elements concentration according to Brazilian environmental legislations, except silver concentration in surface water that ranged from 1.5 to 1087 μg L-1. In addition, water mud-containing presented Fe and Mn concentrations approximately 4-fold higher than the maximum limit for water bodies quality assessment, according to Brazilian laws. Mud particle size ranged from 1 to 200 μm. SEM-EDS spot provided us some semi quantitative data. Leaching/extraction tests suggested that Ba, Pb, As, Sr, Fe, Mn and Al have high potential mobilization from mud to water. Low microbial diversity in mud samples compared to background soil samples. Toxicological bioassays (HepG2 and Allium cepa) indicated potential risks of cytotoxicity and DNA damage in mud and soil samples used in both assays. The present study provides preliminary information aiming to collaborate to the development of future works for monitoring and risk assessment.
Collapse
Affiliation(s)
- Fabiana Roberta Segura
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-170, Santo André, SP, Brazil
| | - Emilene Arusievicz Nunes
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-170, Santo André, SP, Brazil
| | - Fernanda Pollo Paniz
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-170, Santo André, SP, Brazil
| | - Ana Carolina Cavalheiro Paulelli
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, 14040-903, Ribeirão Preto, SP, Brazil
| | - Gabriela Braga Rodrigues
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, 14040-903, Ribeirão Preto, SP, Brazil
| | - Gilberto Úbida Leite Braga
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, 14040-903, Ribeirão Preto, SP, Brazil
| | - Walter Dos Reis Pedreira Filho
- Fundação Jorge Duprat Figueiredo de Segurança e Medicina do Trabalho, Ministério do Trabalho e Previdência Social, 05409-002, São Paulo, SP, Brazil
| | - Fernando Barbosa
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, 14040-903, Ribeirão Preto, SP, Brazil
| | - Giselle Cerchiaro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-170, Santo André, SP, Brazil
| | | | - Bruno Lemos Batista
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-170, Santo André, SP, Brazil.
| |
Collapse
|
12
|
Modulatory Effect of Betulinic Acid on the Genotoxicity Induced by Different Mutagens in V79 Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:8942730. [PMID: 27195016 PMCID: PMC4853943 DOI: 10.1155/2016/8942730] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 01/22/2016] [Accepted: 02/16/2016] [Indexed: 11/17/2022]
Abstract
Betulinic acid (BA) is a pentacyclic triterpene that can be isolated from many medicinal plants around the world. The aim of this study was to evaluate the genotoxic potential of BA and its effect on the genotoxicity induced by different mutagens in V79 cells using the cytokinesis-block micronucleus assay. Different BA concentrations were combined with methyl methanesulfonate (MMS), doxorubicin (DXR), camptothecin (CPT), and etoposide (VP-16). The frequencies of micronuclei in cultures treated with different BA concentrations did not differ from those of the negative control. Treatment with BA and MMS resulted in lower micronucleus frequencies than those observed for cultures treated with MMS alone. On the other hand, a significant increase in micronucleus frequencies was observed in cultures treated with BA combined with DXR or VP-16 when compared to these mutagens alone. The results showed no effect of BA on CPT-induced genotoxicity. Therefore, BA was not genotoxic under the present experimental conditions and exerted a different influence on the genotoxicity induced by different mutagens. The modulatory effect of BA depends on the type of mutagen and concentrations used.
Collapse
|
13
|
Nicolella HD, Oliveira PFD, Munari CC, Costa GFD, Moreira MR, Veneziani RCS, Tavares DC. Differential effect of manool – A diterpene from Salvia officinalis, on genotoxicity induced by methyl methanesulfonate in V79 and HepG2 cells. Food Chem Toxicol 2014; 72:8-12. [DOI: 10.1016/j.fct.2014.06.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 06/27/2014] [Accepted: 06/28/2014] [Indexed: 11/26/2022]
|
14
|
de Oliveira PF, Lima IMDS, Monteiro Neto MDAB, Bastos JK, da Silva Filho AA, Tavares DC. Evaluation of genotoxicity and antigenotoxicity of artepillin C in V79 cells by the comet and micronucleus assays. Nutr Cancer 2013; 65:1098-103. [PMID: 23915392 DOI: 10.1080/01635581.2013.815233] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Artepillin C (3,5-diprenyl-p-coumaric acid) is one of the major phenolic compounds found in Brazilian green propolis, as well as in its botanical source, Baccharis dracunculifolia DC (Asteraceae). The present study evaluated the possible genotoxic and protective activities of artepillin C, in vitro, using methyl methanesulfonate (MMS) as a positive control, by comet and micronucleus assays. The cultures of Chinese hamster lung fibroblasts (V79 cells) were treated with different concentrations of artepillin C (2.5, 5.0, 10.0, and 20 μM). In antigenotoxicity assessment, the 3 concentrations of artepillin C (2.5, 5.0, and 10.0 μM) were associated with MMS (200 μM-comet assay and 400 μM-micronucleus assay). A statistically significant increase in the DNA damage and micronucleus frequencies was observed in the culture treated with the highest concentration of the artepillin C in comparison to the control group. All concentrations of artepillin C showed protective activity in relation to MMS-induced genotoxicity, which may be due to its antioxidant properties.
Collapse
|
15
|
Leandro LF, Munari CC, Sato VLFL, Alves JM, de Oliveira PF, Mastrocola DFP, Martins SDPL, Moraes TDS, de Oliveira AI, Tozatti MG, Cunha WR, Tavares DC. Assessment of the genotoxicity and antigenotoxicity of (+)-usnic acid in V79 cells and Swiss mice by the micronucleus and comet assays. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2013; 753:101-6. [DOI: 10.1016/j.mrgentox.2013.03.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 03/22/2013] [Accepted: 03/24/2013] [Indexed: 10/27/2022]
|
16
|
Rocha BA, Bueno PCP, Vaz MMDOLL, Nascimento AP, Ferreira NU, Moreno GDP, Rodrigues MR, Costa-Machado ARDM, Barizon EA, Campos JCL, de Oliveira PF, Acésio NDO, Martins SDPL, Tavares DC, Berretta AA. Evaluation of a Propolis Water Extract Using a Reliable RP-HPLC Methodology and In Vitro and In Vivo Efficacy and Safety Characterisation. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2013; 2013:670451. [PMID: 23710228 PMCID: PMC3655582 DOI: 10.1155/2013/670451] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2012] [Revised: 03/07/2013] [Accepted: 03/19/2013] [Indexed: 01/22/2023]
Abstract
Since the beginning of propolis research, several groups have studied its antibacterial, antifungal, and antiviral properties. However, most of these studies have only employed propolis ethanolic extract (PEE) leading to little knowledge about the biological activities of propolis water extract (PWE). Based on this, in a previous study, we demonstrated the anti-inflammatory and immunomodulatory activities of PWE. In order to better understand the equilibrium between effectiveness and toxicity, which is essential for a new medicine, the characteristics of PWE were analyzed. We developed and validated an RP-HPLC method to chemically characterize PWE and PEE and evaluated the in vitro antioxidant/antimicrobial activity for both extracts and the safety of PWE via determining genotoxic potential using in vitro and in vivo mammalian micronucleus assays. We have concluded that the proposed analytical methodology was reliable, and both extracts showed similar chemical composition. The extracts presented antioxidant and antimicrobial effects, while PWE demonstrated higher antioxidant activity and more efficacious for the most of the microorganisms tested than PEE. Finally, PWE was shown to be safe using micronucleus assays.
Collapse
Affiliation(s)
- Bruno Alves Rocha
- Laboratório de Pesquisa, Desenvolvimento e Inovação (P, D & I)-Apis Flora Industrial e Comercial LTDA, Rua Triunfo, 945, 14020-670 Ribeirão Preto, SP, Brazil
- Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes, 3900, 14040-901 Ribeirão Preto, SP, Brazil
| | - Paula Carolina Pires Bueno
- Laboratório de Pesquisa, Desenvolvimento e Inovação (P, D & I)-Apis Flora Industrial e Comercial LTDA, Rua Triunfo, 945, 14020-670 Ribeirão Preto, SP, Brazil
- Instituto de Química, Universidade Estadual Paulista, Rua Francisco Degni, 55, 14800-900 Araraquara, SP, Brazil
| | - Mirela Mara de Oliveira Lima Leite Vaz
- Laboratório de Pesquisa, Desenvolvimento e Inovação (P, D & I)-Apis Flora Industrial e Comercial LTDA, Rua Triunfo, 945, 14020-670 Ribeirão Preto, SP, Brazil
- Departamento de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| | - Andresa Piacezzi Nascimento
- Laboratório de Pesquisa, Desenvolvimento e Inovação (P, D & I)-Apis Flora Industrial e Comercial LTDA, Rua Triunfo, 945, 14020-670 Ribeirão Preto, SP, Brazil
| | - Nathália Ursoli Ferreira
- Laboratório de Pesquisa, Desenvolvimento e Inovação (P, D & I)-Apis Flora Industrial e Comercial LTDA, Rua Triunfo, 945, 14020-670 Ribeirão Preto, SP, Brazil
| | - Gabriela de Padua Moreno
- Laboratório de Pesquisa, Desenvolvimento e Inovação (P, D & I)-Apis Flora Industrial e Comercial LTDA, Rua Triunfo, 945, 14020-670 Ribeirão Preto, SP, Brazil
| | - Marina Rezende Rodrigues
- Laboratório de Pesquisa, Desenvolvimento e Inovação (P, D & I)-Apis Flora Industrial e Comercial LTDA, Rua Triunfo, 945, 14020-670 Ribeirão Preto, SP, Brazil
| | - Ana Rita de Mello Costa-Machado
- Laboratório de Pesquisa, Desenvolvimento e Inovação (P, D & I)-Apis Flora Industrial e Comercial LTDA, Rua Triunfo, 945, 14020-670 Ribeirão Preto, SP, Brazil
- Departamento de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| | - Edna Aparecida Barizon
- Departamento de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| | - Jacqueline Costa Lima Campos
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201-Parque Universitário, 14404-600 Franca, SP, Brazil
| | | | - Nathália de Oliveira Acésio
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201-Parque Universitário, 14404-600 Franca, SP, Brazil
| | - Sabrina de Paula Lima Martins
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201-Parque Universitário, 14404-600 Franca, SP, Brazil
| | - Denise Crispim Tavares
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201-Parque Universitário, 14404-600 Franca, SP, Brazil
| | - Andresa Aparecida Berretta
- Laboratório de Pesquisa, Desenvolvimento e Inovação (P, D & I)-Apis Flora Industrial e Comercial LTDA, Rua Triunfo, 945, 14020-670 Ribeirão Preto, SP, Brazil
- Departamento de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| |
Collapse
|
17
|
Vieira PM, Paula JR, Chen-Chen L. Solanum paniculatum L. Leaf and Fruit Extracts: Assessment of Modulation of Cytotoxicity and Genotoxicity by Micronucleus Test in Mice. J Med Food 2010; 13:1424-30. [DOI: 10.1089/jmf.2009.0228] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- Pabline Marinho Vieira
- Department of General Biology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - José Realino Paula
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Lee Chen-Chen
- Department of General Biology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás, Brazil
| |
Collapse
|
18
|
Campos MCO, Salomão K, Castro-Pinto DB, Leon LL, Barbosa HS, Maciel MAM, de Castro SL. Croton cajucara crude extract and isolated terpenes: activity on Trypanosoma cruzi. Parasitol Res 2010; 107:1193-204. [DOI: 10.1007/s00436-010-1988-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Accepted: 07/14/2010] [Indexed: 11/30/2022]
|
19
|
Resende FA, Tomazella IM, Barbosa LC, Ponce M, Furtado RA, Pereira AC, Bastos JK, Andrade E Silva ML, Tavares DC. Effect of the dibenzylbutyrolactone lignan (-)-hinokinin on doxorubicin and methyl methanesulfonate clastogenicity in V79 Chinese hamster lung fibroblasts. Mutat Res 2010; 700:62-6. [PMID: 20452459 DOI: 10.1016/j.mrgentox.2010.04.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Revised: 04/26/2010] [Accepted: 04/29/2010] [Indexed: 01/18/2023]
Abstract
The dibenzylbutyrolactone lignan (-)-hinokinin (HK) was obtained by partial synthesis from (-)-cubebin, isolated from the dry seeds of the pepper, Piper cubeba. In view of the trypanocidal activity of HK and its potential as a lead compound for drug development, evaluation of its possible genotoxic activity is required. We have tested HK for possible genotoxicity and evaluated the compound's effect on the activity of the clastogens doxorubicin (DXR) and methyl methanesulfonate (MMS) in the micronucleus (MN) assay with Chinese hamster lung fibroblast V79 cells. HK alone did not induce MN, at concentrations up to 128microM. In combined treatments, HK reduced the frequency of MN induced by MMS. With respect to DXR, HK exerted a protective effect at lower concentrations, but at higher concentrations it potentiated DXR clastogenicity.
Collapse
Affiliation(s)
- Flávia Aparecida Resende
- Faculdade de Ciências Farmacêuticas de Araraquara, Universidade Estadual Paulista Júlio de Mesquita Filho, Rodovia Araraquara-Jaú Km 1, 14801-902 Araraquara, São Paulo, Brazil
| | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Rabelo AFL, Guedes MM, da Rocha Tomé A, Lima PR, Maciel MA, de Sousa Lira SR, da Silva Carvalho AC, Santos FA, Rao VS. Vitamin E Ameliorates High Dose trans-Dehydrocrotonin-Associated Hepatic Damage in Mice. Nat Prod Commun 2010. [DOI: 10.1177/1934578x1000500405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
trans-Dehydrocrotonin ( t-DCTN), the diterpenoid from Croton cajucara Bentham, exhibits hypoglycemic and hypolipidemic activities, but in high doses is associated with a discrete hepatotoxicity. In the search for measures to mitigate this, pretreatment with the antioxidants N-acetylcysteine and vitamin E has been examined. Mice that received a high dose t-DCTN (100 mg/kg) manifested hepatic damage, as evidenced by significant elevations in serum ALT and AST, and hepatic GSH, and histological alterations, which could be obliterated by pretreatment with vitamin E, but not with N-acetylcysteine, possibly by creating an effective antioxidant balance.
Collapse
Affiliation(s)
- Alana Fontales Lima Rabelo
- Departament of Physiology and Pharmacology, Faculty of Medicine, FederalUniversity of Ceara, POB-3157, 60430-270 Fortaleza, CE, Brazil
| | - Marjorie Moreira Guedes
- Departament of Physiology and Pharmacology, Faculty of Medicine, FederalUniversity of Ceara, POB-3157, 60430-270 Fortaleza, CE, Brazil
| | - Adriana da Rocha Tomé
- Post-Graduation Program in Veterinary Sciences, Veterinary Faculty, State University of Ceará, Fortaleza, Ceará, Brazil
| | - Patricia Rodrigues Lima
- Departament of Physiology and Pharmacology, Faculty of Medicine, FederalUniversity of Ceara, POB-3157, 60430-270 Fortaleza, CE, Brazil
| | - Maria Aparecida Maciel
- Department of Chemistry, CCS, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Silveria Regina de Sousa Lira
- Departament of Physiology and Pharmacology, Faculty of Medicine, FederalUniversity of Ceara, POB-3157, 60430-270 Fortaleza, CE, Brazil
| | - Ana Carla da Silva Carvalho
- Departament of Physiology and Pharmacology, Faculty of Medicine, FederalUniversity of Ceara, POB-3157, 60430-270 Fortaleza, CE, Brazil
| | - Flávia Almeida Santos
- Departament of Physiology and Pharmacology, Faculty of Medicine, FederalUniversity of Ceara, POB-3157, 60430-270 Fortaleza, CE, Brazil
| | - Vietla Satyanarayana Rao
- Departament of Physiology and Pharmacology, Faculty of Medicine, FederalUniversity of Ceara, POB-3157, 60430-270 Fortaleza, CE, Brazil
| |
Collapse
|
21
|
Thermodynamic investigation of mixed monolayers of trans-dehydrocrotonin and phospholipids. Colloids Surf A Physicochem Eng Asp 2010. [DOI: 10.1016/j.colsurfa.2010.01.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
22
|
Evaluation of anti-oxidative, genotoxic and antigenotoxic potency of Codium tomentosum Stackhouse ethanolic extract in human lymphocytes in vitro. Food Chem Toxicol 2009; 47:796-801. [PMID: 19167449 DOI: 10.1016/j.fct.2009.01.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Revised: 12/03/2008] [Accepted: 01/05/2009] [Indexed: 11/20/2022]
Abstract
The genome is constantly exposed to agents, both exogenous and endogenous, that damage DNA. Consequently, it is very important that determination of this agents and the protective agents. In this work, we evaluated the antigenotoxic/antimutagenic activity of the crude ethanolic extracts of Codium tomentosum Stackhouse (Chlorophyceae) (CTE), collected from The Coast of South East Marmara Sea, in human lymphocytes culture in vitro against genotoxic/mutagenic agents MMC, EMS and H(2)O(2) by using chromosome aberration (CA), sister chromatid exchange (SCE) and micronuclei (MN) assays as experimental endpoints. Also, in the present study, we determined total phenolic content and total antioxidant capacity (in soluble lipid and water). In addition, total protein, total carbohydrate, vitamins (A, C and E) and pigments (chlorophyll a, chlorophyll b and carotene) contents were also determined. Results of CA, SCE and MN tests show that CTEs have not shown genotoxic effect. In CTE plus MMC-, EMS- or H(2)O(2)- treated cultures, CA, SCE and MN frequency which induced by MMC, EMS or H(2)O(2) has been decreased significantly (p<0.05-0.001). This is the first report on genotoxicity/antigenotoxicity and anti-oxidative capacity of Codium tomentosum. Our results have clearly shown that CTE has strong anti-oxidative and antigenotoxic effect.
Collapse
|
23
|
Protective effects of plicatin B on micronucleus induction in cultured human lymphocytes by different mutagens. Food Chem Toxicol 2009; 47:124-8. [DOI: 10.1016/j.fct.2008.10.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2007] [Revised: 10/09/2008] [Accepted: 10/15/2008] [Indexed: 01/22/2023]
|
24
|
Celikler S, Yildiz G, Vatan O, Bilaloglu R. In vitro antigenotoxicity of Ulva rigida C. Agardh (Chlorophyceae) extract against induction of chromosome aberration, sister chromatid exchange and micronuclei by mutagenic agent MMC. BIOMEDICAL AND ENVIRONMENTAL SCIENCES : BES 2008; 21:492-498. [PMID: 19263805 DOI: 10.1016/s0895-3988(09)60008-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE To determine the in vitro possible clastogenic and cytotoxic activities of Ulva rigida crude extracts (URE), and identify their antigenotoxic and protective effects on chemotherapeutic agent mitomycine-C (MMC). METHODS Anti-clastogenic and anti-genotoxic activities of Ulva rigida crude extracts (URE) were studied using chromosome aberration (CA), sister chromatid exchange (SCE), and micronuclei (MN) tests in human lymphocytes cultured in vitro. RESULTS The chromosome aberration, sister chromatid exchange or micronuclei tests showed that URE at concentrations of 10, 20, and 40 microg/mL had no clastogenic activity in human lymphocyte cell culture. Three doses of URE significantly decreased the number of chromosomal aberrations and the frequencies of SCE and MN when compared with the culture treated with MMC (P < 0.0001). CONCLUSION Although URE itself is not a clastogenic or cytotoxic substance, it possesses strong antigenotoxic, anti-clastogenic, and protective effects on MMC in vitro.
Collapse
Affiliation(s)
- Serap Celikler
- Department of Biology, Faculty of Science and Arts, Uludag University 16059 Bursa, Turkey.
| | | | | | | |
Collapse
|
25
|
|
26
|
Barcelos GRM, Shimabukuro F, Maciel MAM, Cólus IMS. Genotoxicity and antigenotoxicity of cashew (Anacardium occidentale L.) in V79 cells. Toxicol In Vitro 2007; 21:1468-75. [PMID: 17706911 DOI: 10.1016/j.tiv.2007.06.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2007] [Revised: 06/04/2007] [Accepted: 06/10/2007] [Indexed: 11/17/2022]
Abstract
The use of plants for the treatment of diseases continues to rise although there are few studies providing proof of these effects. One of these plants is the Anacardium occidentale, popularly known as the cashew. The present study evaluated the possible genotoxic and protective activities of cashew stem bark methanolic extract, in vitro, using methyl methanesulfonate (MMS) as a positive control, to compare possible mechanisms of DNA damage induction in the Comet assay. The antigenotoxicity protocols used were pre, simultaneous and post-treatment in relation to MMS. In genotoxicity and antigenotoxicity assessments, besides MMS, PBS was used as the negative control and three concentrations of the A. occidentale extract (500 microg/mL, 1000 microg/mL and 2000 microg/mL) were used on Chinese hamster lung fibroblasts (V79 cells). The Comet assay revealed that the two lowest concentrations tested presented no genotoxic activity, whereas the highest presented genotoxicity. All of the concentrations showed protective activity in simultaneous and post-treatment in relation to MMS. Further studies are required to identify the substances that comprise the extract and more clearly comprehend the antigenotoxic mechanism detected in this study.
Collapse
Affiliation(s)
- G R M Barcelos
- Departamento de Biologia Geral, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid km 380, 86051-990 Londrina, Paraná, Brazil.
| | | | | | | |
Collapse
|