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| Adad,Lúcia Maria de Miranda; Andrade,Heloísa Helena Rodrigues de; Kvitko,Kátia; Lehmann,Mauricio; Cavalcante,Ana Amélia de Carvalho Melo; Dihl,Rafael Rodrigues. |
| Farm workers are often exposed to pesticides, which are products belonging to a specific chemical group that affects the health of agricultural workers and is mostly recognized as genotoxic and carcinogenic. The exposure of workers from Piauí, Brazil, to these hazardous chemicals was assessed and cytogenetic alterations were evaluated using the buccal micronucleus assay, hematological and lipid parameters, butyrylcholinesterase (BChE) activity and genetic polymorphisms of enzymes involved in the metabolism of pesticides, such as PON1, as well as of the DNA repair system (OGG1, XRCC1 and XRCC4). Two groups of farm workers exposed to different types of pesticides were evaluated and compared to matched non-exposed control groups. A significant increase was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human monitoring; Buccal micronucleus test; Pesticides; PON 1; DNA repair genes. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000300308 |
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| Jacociunas,Laura Vicedo; Dihl,Rafael Rodrigues; Lehmann,Mauricio; Ferraz,Alexandre de Barros Falcão; Richter,Marc François; Silva,Juliana da; Andrade,Heloísa Helena Rodrigues de. |
| The genotoxicity of bloom head (BHE) and leaf (LE) extracts from artichoke (Cynara scolymus L.), and their ability to modulate the mutagenicity and recombinogenicity of two alkylating agents (ethyl methanesulfonate - EMS and mitomycin C - MMC) and the intercalating agent bleomycin (BLM), were examined using the somatic mutation and recombination test (SMART) in Drosophila melanogaster. Neither the mutagenicity nor the recombinogenicity of BLM or MMC was modified by co- or post-treatment with BHE or LE. In contrast, co-treatment with BHE significantly enhanced the EMS-induced genotoxicity involving mutagenic and/or recombinant events. Co-treatment with LE did not alter the genotoxicity of EMS whereas post-treatment with the highest dose of LE significantly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artichoke; Drosophila melanogaster; Recombinogenicity; SMART. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000100015 |
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| Bellagamba,Bruno Corrêa; Abreu,Bianca Regina Ribas de; Grivicich,Ivana; Markarian,Carolina Franke; Chem,Eduardo; Camassola,Melissa; Nardi,Nance Beyer; Dihl,Rafael Rodrigues. |
| Abstract Mesenchymal stem cells (MSCs) are known for their important properties involving multilineage differentiation potential., trophic factor secretion and localization along various organs and tissues. On the dark side, MSCs play a distinguished role in tumor microenvironments by differentiating into tumor-associated fibroblasts or supporting tumor growth via distinct mechanisms. Cisplatin (CIS) is a drug widely applied in the treatment of a large number of cancers and is known for its cytotoxic and genotoxic effects, both in vitro and in vivo. Here we assessed the effects of CIS on MSCs and the ovarian cancer cell line OVCAR-3, by MTT and comet assays. Our results demonstrated the resistance of MSCs to cell death and DNA damage induction by CIS,... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Mesenchymal stem cells; Cisplatin; MTT; Comet assay; OVCAR-3 cells. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000100129 |
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| Silva,Robson Alves da; Dihl,Rafael Rodrigues; Dias,Lucas Pinheiro; Costa,Maiane Papke; Abreu,Bianca Regina Ribas de; Cunha,Kênya Silva; Lehmann,Mauricio. |
| Abstract Fruits and derivatives, such as juices, are complex mixtures of chemicals, some of which may have mutagenic and/or carcinogenic potential, while others may have antimutagenic and/or anticancer activities. The modulating effects of honey-sweetened cashew apple nectar (HSCAN), on somatic mutation and recombination induced by ethyl methanesulfonate (EMS) and mitomycin C (MMC) were evaluated with the wing spot test in Drosophila melanogaster using co- and post-treatment protocols. Additionally, the antimutagenic activity of two HSCAN components, cashew apple pulp and honey, in MMC-induced DNA damage was also investigated. HSCAN reduced the mutagenic activity of both EMS and MMC in the co-treatment protocol, but had a co-mutagenic effect when... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimutagenicity; Cashew apple; Drosophila melanogaster; Honey; Somatic cells. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000300431 |
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