The expression of an intraspecific aggressive reaction in the face of a stressor agent alters the immune response in rats
| Autor: | Jairza Maria Barreto-Medeiros, E G Feitoza, R. R. da Silva, Francisco Machado Manhaes-de-Castro, K Magalhaes, Raul Manhães-de-Castro, Célia Maria Machado Barbosa de-Castro |
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| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Male
medicine.medical_specialty leukocytes Lymphocyte Aggressive reaction Biology Intraspecific competition Leukocyte Count Immune system Stress Physiological Antigen specific lcsh:Botany Internal medicine lcsh:Zoology medicine Animals lcsh:QL1-991 Rats Wistar lcsh:Science lcsh:QH301-705.5 Electroshock Stressor humoral immune response lcsh:QK1-989 Rats Aggression medicine.anatomical_structure Endocrinology lcsh:Biology (General) Immune System Immunology lcsh:Q intraspecific aggressiveness General Agricultural and Biological Sciences |
| Zdroj: | Brazilian Journal of Biology v.65 n.2 2005 Brazilian Journal of Biology Instituto Internacional de Ecologia (IIE) instacron:IIE Brazilian Journal of Biology, Vol 65, Iss 2, Pp 203-209 |
| Popis: | The repercussion on the immune response of the expression of intraspecific aggressiveness in the face of a stressor agent was investigated in rats. Ninety-day-old animals were divided into three groups: the control group (only immunological measurements were performed), the foot-shock (FS) (animals individually receiving FS), and the intraspecific aggressive response (IAR) group (animals receiving FS and presenting IAR). For immunological measurements, blood samples were collected promptly at 7 and 15 days after FS or IAR. The FS reduced the total leukocyte amount presented. However, aggressiveness triggered not only reduction of the leukocytes, but also lymphocyte decrease and neutrophil increase. Moreover, an elevation in total leukocytes associated with an increase in the humoral immune response was also observed one week after IAR. In this study, the expression of intraspecific aggressiveness in the face of a stressor seemed to activate the immune system and to potentiate the antigen specific humoral response. |
| Databáze: | OpenAIRE |
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