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Effect of heat stress on the antioxidant defense system and erythrocyte morphology of Antarctic fishes.
Souza, Maria Rosa D P DE; Zaleski, Tania; Machado, Cintia; Kandalski, Priscila K; Forgati, Mariana; D' Bastiani, Elvira; Piechnik, Cláudio A; Donatti, Lucélia.
Afiliación
  • Souza MRDP; Universidade Federal do Paraná, Departamento de Biologia Celular, Av. Cel. Francisco H. dos Santos, s/n, Jardim das Américas, 81531-970 Curitiba, PR, Brazil.
  • Zaleski T; Universidade Federal do Paraná, Departamento de Biologia Celular, Av. Cel. Francisco H. dos Santos, s/n, Jardim das Américas, 81531-970 Curitiba, PR, Brazil.
  • Machado C; Universidade Federal do Paraná, Departamento de Biologia Celular, Av. Cel. Francisco H. dos Santos, s/n, Jardim das Américas, 81531-970 Curitiba, PR, Brazil.
  • Kandalski PK; Universidade Federal do Paraná, Departamento de Biologia Celular, Av. Cel. Francisco H. dos Santos, s/n, Jardim das Américas, 81531-970 Curitiba, PR, Brazil.
  • Forgati M; Universidade Federal do Paraná, Departamento de Biologia Celular, Av. Cel. Francisco H. dos Santos, s/n, Jardim das Américas, 81531-970 Curitiba, PR, Brazil.
  • D' Bastiani E; Universidade Federal do Paraná, Departamento de Zoologia, Av. Cel. Francisco H. dos Santos, s/n, Jardim das Américas, 81531-970 Curitiba, PR, Brazil.
  • Piechnik CA; Universidade Federal do Paraná, Departamento de Biologia Celular, Av. Cel. Francisco H. dos Santos, s/n, Jardim das Américas, 81531-970 Curitiba, PR, Brazil.
  • Donatti L; Universidade Federal do Paraná, Departamento de Biologia Celular, Av. Cel. Francisco H. dos Santos, s/n, Jardim das Américas, 81531-970 Curitiba, PR, Brazil.
An Acad Bras Cienc ; 94(suppl 1): e20190657, 2021.
Article en En | MEDLINE | ID: mdl-34730667
This study analyzed the effect of thermal stress on erythrocytes of Notothenia rossii and Notothenia coriiceps, abundant notothenioids in Admiralty Bay, Antarctic Peninsula. In both species, the antioxidant defense system enzymes, superoxide dismutase, catalase, glutathione peroxidase, glutathione-S transferase, glutathione reductase were punctually altered (8°C for 1, 3 and 6 days) in erythrocytes, indicating that these markers are not ideal for termal stress. However, under the influence of thermal stress, morphological changes in Notothenia coriiceps erythrocytes were observed at all exposure times (1, 3 and 6 days at 8°C), and in Notothenia rossii occurred in 6 days. These results suggest that Notothenia corriceps presents a lower tolerance to thermal stress at 8°C for up to 6 days, since the cellular and nuclear alterations recorded are pathological and may be deleterious to the cells. Among the morphological markers analyzed in this work, we believe that the shape change and nuclear bubble formation may be good stress biomarkers in erythrocytes of Notothenia rossii and Notothenia coriiceps.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Respuesta al Choque Térmico / Antioxidantes Límite: Animals Idioma: En Revista: An Acad Bras Cienc Año: 2021 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Respuesta al Choque Térmico / Antioxidantes Límite: Animals Idioma: En Revista: An Acad Bras Cienc Año: 2021 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil