Circannual rhythm in the effects of stress on the humoral immune response of the rat.
Among the seasonal immunological changes that have been observed are increase in spring-summer and decrease in autumn-winter humoral response, in unstressed subjects. In rats we show that, relative to controls, stress increased the antibody response to sheep red blood cells in July-August, and decreases it from September throughout February. We concluded, therefore, that stress reinforces the basic annual rhythm of this type of response.
Amat
J
J
Sección de Neurofisiología, Universidad Central de Venezuela, Caracas.
Torres
A
A
D000818:Animals; D000906:Antibodies / Q000097:blood; D000917:Antibody Formation; D004597:Electroshock; D005260:Female; D010507:Periodicity; D051381:Rats; D017207:Rats, Sprague-Dawley; D012621:Seasons; D013315:Stress, Psychological / Q000276:immunology*; D013696:Temperature
D000906:Antibodies