TY - JOUR T1 - Immunization Procedures of Δcrp Δasd Double Deleted Attenuated Salmonella Enterica Serovar Typhimurium delivering Somatostatin Antigen in Mice AU - Yang, Li-Guo AU - Liang, Ai-Xin AU - Dong, Fang-Xiao AU - Luo, Xuan AU - Yu, Xue AU - Han, Li AU - Han, Yan-Guo AU - Guo, Ai-Zhen JO - Journal of Animal and Veterinary Advances VL - 11 IS - 24 SP - 4526 EP - 4532 PY - 2012 DA - 2001/08/19 SN - 1680-5593 DO - javaa.2012.4526.4532 UR - https://makhillpublications.co/view-article.php?doi=javaa.2012.4526.4532 KW - Somatostatin KW -Salmonella KW -dose KW -interval KW -mice AB - In order to estimate the optimal immunization procedures for a novel somatostatin vaccine carried by Δcrp Δasd double deleted attenuated Salmonella enterica serovar Typhimurium. Mice were vaccinated with somatostatin vaccine strain (C500/pVGS/2SS-asd) by using three immunization dosages and three alternative schedules. The specific antibody response was evaluated by indirect ELISA Method. The results showed that 0.2x1010 CFU per mouse was the optimal immunization dosage to induce specific IgG response. Interestingly, the booster groups either 2 weeks interval or 4 weeks interval after the first immunization were not improving the level of specific IgG response as expected compared with only injection one dose groups. Furthermore, the different interval period of booster injections also affected the immune response, antibody levels of booster given 4 weeks interval was much higher than that booster given 2 weeks interval. Similar results were obtained on body weight gains analysis. The results of body weight gains of immunized mice also showed that the most effective immunization dosage is 0.2x1010 CFU per mouse and the optimal immunization number is a single dose. These observations have a very important application in the field of animal production. ER -