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Bernardes SS, de Souza-Neto FP, Ramalho LNZ, Derossi DR, Guarnier FA, da Silva CFN, Melo GP, Simão ANC, Cecchini R, Cecchini AL. Systemic oxidative profile after tumor removal and the tumor microenvironment in melanoma patients. Cancer Lett 2015; 361:226-32. [PMID: 25772650 DOI: 10.1016/j.canlet.2015.03.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 03/05/2015] [Accepted: 03/06/2015] [Indexed: 02/09/2023]
Abstract
This study highlights the systemic oxidative changes in patients submitted to primary cutaneous melanoma removal. Cutaneous melanoma is highly aggressive and its incidence is increasing worldwide. We evaluated systemic oxidative stress (OS) and 3-nitrotyrosine (3-NT) expression in melanoma tissue in relation to the Breslow thickness in patients under surveillance. Forty-three patients with cutaneous melanoma and 50 healthy volunteers were recruited. Patients were divided into two groups according to the tumor's Breslow thickness: T1/T2 (<2 mm) and T3/T4 (≥2 mm). Systemic OS and inflammatory mediators were evaluated in plasma, and the 3-NT expression was analyzed via immunohistochemistry. Compared with the controls, the patients had lower blood levels of reduced glutathione, higher malondialdehyde and thiol levels, and a higher total radical-trapping antioxidant parameter to uric acid ratio. The C-reactive protein and γ-glutamyl transpeptidase were increased only in the T3/T4 group. High levels of 3-NT were present only in T3/T4 patients. Our data suggested that a correlation exists between the Breslow thickness and a systemic pro-oxidant status, and that oxidative changes induced by the melanoma remain in the microenvironment post-surgery, demonstrating a role for oxygen species in melanoma.
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Affiliation(s)
- Sara Santos Bernardes
- Laboratory of Molecular Pathology, Department of General Pathology, State University of Londrina, PR445, Km 380, Londrina, PR 86057-970, Brazil
| | - Fernando Pinheiro de Souza-Neto
- Laboratory of Molecular Pathology, Department of General Pathology, State University of Londrina, PR445, Km 380, Londrina, PR 86057-970, Brazil
| | - Leandra Náira Zambelli Ramalho
- Department of Pathology and Legal Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Av Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil
| | - Daniela Rudgeri Derossi
- Londrina Cancer Hospital, Rua Lucilla Ballalai, 212, Londrina, PR 86015-520, Brazil; Department of Pathology, Clinical and Toxicological Analysis, University Hospital, State University of Londrina, Av. Robert Koch, 60, Londrina, PR 86038-350, Brazil
| | - Flávia Alessandra Guarnier
- Department of Pathology and Legal Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Av Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil
| | - Cássio Fernando Nunes da Silva
- Laboratory of Molecular Pathology, Department of General Pathology, State University of Londrina, PR445, Km 380, Londrina, PR 86057-970, Brazil
| | - Gabriella Pascoal Melo
- Laboratory of Molecular Pathology, Department of General Pathology, State University of Londrina, PR445, Km 380, Londrina, PR 86057-970, Brazil
| | - Andréa Name Colado Simão
- Department of Pathology, Clinical and Toxicological Analysis, University Hospital, State University of Londrina, Av. Robert Koch, 60, Londrina, PR 86038-350, Brazil
| | - Rubens Cecchini
- Laboratory of Pathophysiology and Free Radicals, Department of General Pathology, State University of Londrina, PR445, Km 380, Londrina, PR 86057-970, Brazil
| | - Alessandra Lourenço Cecchini
- Laboratory of Molecular Pathology, Department of General Pathology, State University of Londrina, PR445, Km 380, Londrina, PR 86057-970, Brazil.
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