Acute aerocistitis induced by thioglycolate, lipopolysaccharide and inactivated Aeromonas hydrophila in Piaractus mesopotamicus: hematological effects

Authors

  • Julieta Rodini Engrácia de Moraes Universidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Patologia Veterinária, Jaboticabal, SP
  • Fabiana Rizzi Bozzo Universidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Patologia Veterinária, Jaboticabal, SP
  • Rodrigo O. A. Ozorio Universidade do Porto, Centro Interdisciplinar de Investigação Marinha e Ambiental, Porto, Portugal
  • Jair Rodin Engrácia Filho Universidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Patologia Veterinária, Jaboticabal, SP
  • Flávio Ruas de Moraes Universidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Patologia Veterinária, Jaboticabal, SP

DOI:

https://doi.org/10.11606/issn.2318-3659.v49i5p345-353

Keywords:

Inflammation, Blood. Erythrocytes, Leucocytes, Thrombocytes

Abstract

The effects of swim bladder injection with thioglycolate, Escherichia coli lipopolysaccharide (LPS) and heat-inactivated Aeromonas hydrophila were assessed on hematological responses in pacu, Piaractus mesopotamicus (Characidae). A quantitative assessment was done on erythrocytes, thrombocytes e leucocytes at 6, 24, and 48 h pos-injection of the inflammatory agents and compared with fish injected with saline solution (control). Fish injected with inactivated A.hydrophila showed a reduction of erythrocytes and hemoglobin, whereas the hematocrit increased 6 h pos-injection.The results show that thioglycolate and LPS also induced a reduction on hemoglobin and an increase on the hematocrit. The thrombocytes count decreased 6 h post A. hydrophila injection, whereas increased 48 hours post LPS injection. The leukocytes count increased after 6 h post A. hydrophila injection, while the lymphocytes and PAS-positive granularleukocytes (PAS-LG) count decreased after 24 h post injection. In fish injected with thioglycolate or with LPS showed an increase in the LG-PAS counts when compared to A. hydrophila or control groups. The monocytes count was not affected by the different inflammatory agents.

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Published

2012-10-26

Issue

Section

UNDEFINIED

How to Cite

1.
Moraes JRE de, Bozzo FR, Ozorio ROA, Engrácia Filho JR, Moraes FR de. Acute aerocistitis induced by thioglycolate, lipopolysaccharide and inactivated Aeromonas hydrophila in Piaractus mesopotamicus: hematological effects. Braz. J. Vet. Res. Anim. Sci. [Internet]. 2012 Oct. 26 [cited 2024 Jun. 15];49(5):345-53. Available from: https://www.revistas.usp.br/bjvras/article/view/51727