TY - JOUR ID - 40068 TI - Immunogens of Brucella Abortus S19 Identified By Two-Dimensional Gel Electrophoresis and Immunoblotting JO - Iranian Journal of Medical Sciences JA - IJMS LA - en SN - 0253-0716 AU - Mostafaie, A. AU - Abdolalizadeh, J AU - Nomanpour, B AU - Karimi, R. AU - Bahrami, Y. AD - Y1 - 2005 PY - 2005 VL - 30 IS - 1 SP - 10 EP - 15 DO - N2 - Background: Lipopolysaccharides (LPSs) and several antigenic proteins of Brucella have been considered for preparation of diagnostic reagents and subunit vaccines. The objective of this study was to identify and compare immunogens of B. abortus S19 which induce humoral immune responses in human, goat and rabbit. Material and Methods: The bacterial whole cell extract was prepared in extraction buffer and resolved using two-dimensional gel electrophoresis (2-DE). The resolved antigens were reacted against human, goat and rabbit sera using western blotting. Results: At least 19, 14 and 16 immunogenic proteins were recognized in western blotting with human, goat and rabbit sera, respectively. The most abundant proteins of the bacterium with immunogenic properties in goat and rabbit but not in human, were a group of 5-6 proteins with molecular masses of 32-34 KDa and isoelectric point (pI) ranging from 4.5 to 5.7. In contrast, a group of 5 proteins with molecular weight of 45 KDa and pI in the range of 4.5 to 5.4 as well as several low molecular weight proteins were immunogenic in human. Furthermore several proteins of Brucella had similar reactions against all sera. Conclusion: These results showed that some of the antigenic proteins of Brucella could be candidates for more accurate diagnosis of Brucellosis in humans and domestic animals.Iran J Med Sci 2005; 30(1): 10-15. Keywords ● Brucella abortus ● Two dimensional gel electrophoresis ● Immunoblot ● Immunogens UR - https://ijms.sums.ac.ir/article_40068.html L1 - https://ijms.sums.ac.ir/article_40068_921c101a5109de8b03b0d2a5343b0b42.pdf ER -