Effect of classical conditioning over immature and mature B lymphocytes regulation

• Published in: Microscopy research and technique 2018-12, Vol.81 (12), p.1451-1455
• Main Authors: Rodríguez Bustos, Héctor, Espinoza‐Navarro, Omar, Castro, María Eugenia
• Format: Article
• Language: English
• Subjects: Animals; Antibodies; Antigens, CD - immunology; Antigens, CD20 - immunology; Antigens, Neoplasm - immunology; B-Lymphocytes - cytology; B-Lymphocytes - immunology; Body weight; B‐lymphocytes; CD20 antigen; Cell Differentiation; Classical conditioning; Conditioned stimulus; Conditioning; Cyclophosphamide; Design of experiments; Erythrocytes; Erythrocytes - cytology; Euthanasia; Experimental design; Immune response; Immune system; Immunohistochemistry; Immunology; Immunomodulation; Immunosuppression; Lymphocytes; Lymphocytes B; Male; psycho‐neuroinmmunomodulation; Rats; Rats, Sprague-Dawley; Receiving waters; Red pulp; Rodents; Sheep; Sheep red blood cells; Sodium; Spleen; Spleen - cytology; Spleen - immunology; Sweet taste; Tetraspanins - immunology; Thiopental; Unconditioned stimulus
• ISSN: 1059-910X; 1097-0029
• DOI: 10.1002/jemt.23112

Classical conditioning (CC) with a sweet flavored is useful for experimental models of immune response. The objective this work was analyze spleen cell response on the differentiation of B‐lymphocytes associated with the CC with sweet flavored in adult rats. Twelve adult male rats were divided (n = 3) in Group 1 (control); Group 2 without conditioned stimulus (WCS) received only water; Group 3 receiving only water with salt; Group 4 (experimental) with CS of sweet flavored and salty flavored afterwards. In every work group, all animals were subjected to the unconditioned stimulus (US) treated by 10 mg/kg body weight of cyclophosphamide injected intraperitoneally (i.p.). Subsequently an immunological challenge with sheep red blood cells i.p. was applied. Spleen samples were obtained 15 days after using euthanasia with 1% sodium thiopental i.p. The evaluation B lymphocyte (immature and mature) was performed by immunohistochemistry using specific antibodies against CD20 and against CD37, and revealed with HRP/DAB. The results show in every work group significant increases of CD20+ and CD37+ cell densities in the red pulp of the spleen of male adult rats from different groups of the experimental design. We concluded that the immunomodulatory response under CC might facilitate a less aggressive and more physiological immunological response against immunosuppression. Research highlights The immune response can be reinforced by classical conditioning. The sweet taste allows to positively condition the immune response. B lymphocytes actively participate in the immune response and classical conditioning.