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Oliveira CR, Garcia TD, Franco-Belussi L, Salla RF, Souza BFS, de Melo NFS, Irazusta SP, Jones-Costa M, Silva-Zacarin ECM, Fraceto LF. Pyrethrum extract encapsulated in nanoparticles: Toxicity studies based on genotoxic and hematological effects in bullfrog tadpoles. Environ Pollut 2019; 253:1009-1020. [PMID: 31434178 DOI: 10.1016/j.envpol.2019.07.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 06/14/2019] [Accepted: 07/08/2019] [Indexed: 06/10/2023]
Abstract
The environment receives about 2.7 kg.ha-1 annually of pesticides, used in crop production. Pesticides may have a negative impact on environmental biodiversity and potentially induce physiological effects on non-target species. Advances in technology and nanocarrier systems for agrochemicals led to new alternatives to minimize these impacts, such as nanopesticides, considered more efficient, safe and sustainable. However, it is important to evaluate the risk potential, action and toxicity of nanopesticides in aquatic and terrestrial organisms. This study aims to evaluate genotoxic and hematological biomarkers in bullfrog tadpoles (Lithobates catesbeianus) submitted to acute exposure (48 h) to pyrethrum extract (PYR) and solid lipid nanoparticles loaded with PYR. Results showed increased number of leukocytes during acute exposure, specifically eosinophils in nanoparticle-exposed groups, and basophil in PYR-exposed group. Hematological analysis showed that PYR encapsulated in nanoparticles significantly increased the erythrocyte number compared to the other exposed groups. Data from the comet assay indicated an increase in frequency of the classes that correspond to more severe DNA damages in exposed groups, being that the PYR-exposed group showed a high frequency of class-4 DNA damage. Moreover, erythrocyte nuclear abnormalities were triggered by short-time exposure in all treatments, which showed effects significantly higher than the control group. These results showed genotoxic responses in tadpoles, which could trigger cell death pathways. Concluding, these analyses are important for applications in assessment of contaminated aquatic environments and their biomonitoring, which will evaluate the potential toxicity of xenobiotics, for example, the nanoparticles and pyrethrum extract in frog species. However, further studies are needed to better understand the effects of nanopesticides and botanical insecticides on non-target organisms, in order to contribute to regulatory aspects of future uses for these systems.
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Affiliation(s)
- C R Oliveira
- Universidade Estadual Paulista (UNESP), Instituto de Ciência e Tecnologia de Sorocaba, Laboratório de Nanotecnologia Ambiental, Av. Três de Março, 511, Alto da Boa Vista, 18087-180, Sorocaba, SP, Brazil; Universidade Federal de São Carlos (UFSCar), Campus Sorocaba, Departamento de Biologia, Laboratório de Fisiologia da Conservação e Laboratório de Ecotoxicologia e Biomarcadores em Animais, Rodovia João Leme dos Santos km 110, Itinga, 18052-780, Sorocaba, SP, Brazil
| | - T D Garcia
- Universidade Federal de São Carlos (UFSCar), Campus Sorocaba, Programa de Pós-Graduação em Biotecnologia e Monitoramento Ambiental, Rodovia João Leme dos Santos km 110, Itinga, 18052-780, Sorocaba, SP, Brazil
| | - L Franco-Belussi
- Universidade Federal de Mato Grosso do Sul (UFMS), Instituto de Biociências, Laboratório de Patologia Experimental, Avenida Costa e Silva, s/n, Bairro Universitário, 79002-970, Campo Grande, MS, Brazil
| | - R F Salla
- Universidade Estadual de Campinas (UNICAMP), Instituto de Biologia, Departamento de Biologia Animal, R. Monteiro Lobato, 255, Cidade Universitária, 13083-862, Campinas, SP, Brazil
| | - B F S Souza
- Universidade Federal de São Carlos (UFSCar), Campus Sorocaba, Programa de Pós-Graduação em Biotecnologia e Monitoramento Ambiental, Rodovia João Leme dos Santos km 110, Itinga, 18052-780, Sorocaba, SP, Brazil; Universidade Federal de São Carlos (UFSCar), Campus Sorocaba, Departamento de Biologia, Laboratório de Fisiologia da Conservação e Laboratório de Ecotoxicologia e Biomarcadores em Animais, Rodovia João Leme dos Santos km 110, Itinga, 18052-780, Sorocaba, SP, Brazil
| | - N F S de Melo
- Faculdade de Medicina São Leopoldo Mandic, Campus Araras, Av. Dona Renata, 71, Santa Cândida, 13600-001, Araras, SP, Brazil
| | - S P Irazusta
- Faculdade de Tecnologia de Sorocaba (FATEC), Centro Estadual de Educação Tecnológica Paula Souza, Campus Sorocaba, Laboratório de Ecotoxicologia, Av. Eng. Carlos R. Mendes, 2015, Além Ponte, 18013-280, Sorocaba, SP, Brazil
| | - M Jones-Costa
- Universidade Federal de São Carlos (UFSCar), Campus Sorocaba, Programa de Pós-Graduação em Biotecnologia e Monitoramento Ambiental, Rodovia João Leme dos Santos km 110, Itinga, 18052-780, Sorocaba, SP, Brazil; Universidade Federal de São Carlos (UFSCar), Campus Sorocaba, Departamento de Biologia, Laboratório de Fisiologia da Conservação e Laboratório de Ecotoxicologia e Biomarcadores em Animais, Rodovia João Leme dos Santos km 110, Itinga, 18052-780, Sorocaba, SP, Brazil.
| | - E C M Silva-Zacarin
- Universidade Federal de São Carlos (UFSCar), Campus Sorocaba, Programa de Pós-Graduação em Biotecnologia e Monitoramento Ambiental, Rodovia João Leme dos Santos km 110, Itinga, 18052-780, Sorocaba, SP, Brazil; Universidade Federal de São Carlos (UFSCar), Campus Sorocaba, Departamento de Biologia, Laboratório de Fisiologia da Conservação e Laboratório de Ecotoxicologia e Biomarcadores em Animais, Rodovia João Leme dos Santos km 110, Itinga, 18052-780, Sorocaba, SP, Brazil
| | - L F Fraceto
- Universidade Estadual Paulista (UNESP), Instituto de Ciência e Tecnologia de Sorocaba, Laboratório de Nanotecnologia Ambiental, Av. Três de Março, 511, Alto da Boa Vista, 18087-180, Sorocaba, SP, Brazil.
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Grazina MM, Diogo LM, Garcia PC, Silva ED, Garcia TD, Robalo CB, Oliveira CR. Atypical presentation of Leber's hereditary optic neuropathy associated to mtDNA 11778G>A point mutation--A case report. Eur J Paediatr Neurol 2007; 11:115-8. [PMID: 17254817 DOI: 10.1016/j.ejpn.2006.11.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2006] [Revised: 11/23/2006] [Accepted: 11/27/2006] [Indexed: 01/27/2023]
Abstract
Leber's hereditary optic neuropathy (LHON) is a maternally inherited mitochondrial disorder characterized by bilateral loss of central vision, most frequently found in young adult males. In most patients there are no other neurological manifestations and cerebral neuroimaging is normal, but some rare cases of "LHON plus" have been described. Classical LHON is mainly associated to mitochondrial DNA (mtDNA) mutations 11778G>A, 3460G>A and 14484T>C, localized in the coding regions for ND4, ND1 and ND6 of the complex I subunits of mitochondrial respiratory chain (MRC), respectively. We report a 12-year-old girl who presented with reduced visual acuity secondary to optic atrophy at 8 months of age, which led to a clinical diagnosis of LHON. Psychomotor regression, refractory epilepsy and progressive neurological abnormalities developed subsequently. Skeletal muscle histology and biochemical MRC function were normal (evaluated by dual wavelength spectrophotometry). A 11778G>A mtDNA point mutation (investigated by standard PCR and automatic sequencing methods) was identified in lymphocytes isolated from peripheral blood, muscle biopsy and cultured skin fibroblasts. The mother and other maternal relatives are carriers for the same mutation. This case is unusual for age of onset, gender, associated neurological findings and evolution.
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Affiliation(s)
- Manuela M Grazina
- Biochemistry Institute, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
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