Initiation of humoral immunity. II. The effects of T-independent and T-dependent antigens on the distribution of lymphocyte populations.
The effect of injecting T-independent (lipopolysaccharide, LPS) and T-dependent (bovine serum albumin, BSA) antigens on the redistribution of lymphocyte populations in immature male chickens was investigated. In the blood, percentages of total T-cells (CD3+), T-helper cells (CD4+), and T-cytotoxic/suppressor cells (CD8+) significantly decreased post-LPS injection (PLI) but not post-BSA injection (PBI), while percentages of monocytes/thrombocytes (K1+) significantly increased PLI. Interleukin-1 receptor expression on blood lymphocytes increased significantly PLI and PBI. In the spleen, the percentages of total T-cells (CD3+) increased significantly PLI and PBI, macrophage (K1+) percentages increased significantly PLI, while B-cell percentages decreased significantly PLI. These results indicate that following antigen injection, there is a redistribution of peripheral blood lymphocytes (specifically T-lymphocytes) to secondary lymphoid organs and the kinetics and magnitude of the changes can differ according to the type of antigen used.
Gehad
A E
AE
National Research Center, Giza, Egypt.
Lillehoj
H S
HS
Hendricks
G L
GL
Mashaly
M M
MM
D000818:Animals; D000906:Antibodies / Q000276:immunology*; D000941:Antigens / Q000276:immunology; D001792:Blood Platelets / Q000276:immunology; D017252:CD3 Complex / Q000032:analysis; D015704:CD4 Antigens / Q000032:analysis; D016827:CD8 Antigens / Q000032:analysis; D002452:Cell Count; D002645:Chickens / Q000097:blood / Q000276:immunology*; D008070:Lipopolysaccharides / Q000008:administration & dosage / Q000276:immunology; D016131:Lymphocyte Subsets / Q000276:immunology*; D008264:Macrophages / Q000276:immunology; D008297:Male; D009000:Monocytes / Q000276:immunology; D012710:Serum Albumin, Bovine / Q000008:administration & dosage / Q000276:immunology; D013154:Spleen / Q000276:immunology; D013997:Time Factors
D000906:Antibodies; D000941:Antigens; D017252:CD3 Complex; D015704:CD4 Antigens; D016827:CD8 Antigens; D008070:Lipopolysaccharides; D012710:Serum Albumin, Bovine