Effects of edifenphos and glyphosate on the immune response and protein biosynthesis of bolti fish (Tilapia nilotica).
The effects of 1/1000 field recommended concentration of the organophosphorus compounds; edifenphos and glyphosate on the immune response and protein contents were investigated after different time intervals. The cell mediated immune response assessed by proliferative response of splenocytes to mitogens; phytohemagglutinin (PHA) and concanavalin A (Con A) for T cell and lipopolysaccharide (LPS) for B cell decreased significantly in tems of the level of stimulation index in the treated fish and reached maximal depression after 4 weeks. Humoral immunity assessed as splenic antibody plaque forming cells (PFC) measured after 5 days in vitro immunization to sheep erythrocytes (SRBC's) were suppressed in a concentration dependent pattern by the two compounds. The estimated ED50 for the PFC/10(6) cells of edifenphos and glyphosate were 1.48 x 10(-2) uM and 1.65 x 10(-2) uM respectively. The data also showed that serum antibody titres in the treated fish were decreased in a time dependent manner. The total protein content of serum treated with the two pesticides was decreased after different time periods compared with control. The blood serum of treated and untreated Tilapia nilotica were analyzed electrophoretically for protein components and the percentage of proteins in each fraction was determined.
el-Gendy
K S
KS
Dept. Pesticide Chemistry, Faculty of Agriculture, University of Alexandria, Egypt.
Aly
N M
NM
el-Sebae
A H
AH
D000818:Animals; D000917:Antibody Formation; D001798:Blood Proteins / Q000096:biosynthesis; D004534:Egypt; D005998:Glycine / Q000031:analogs & derivatives* / Q000633:toxicity; D006540:Herbicides / Q000633:toxicity*; D007111:Immunity, Cellular; D007306:Insecticides / Q000633:toxicity*; D008213:Lymphocyte Activation / Q000187:drug effects; D008214:Lymphocytes / Q000187:drug effects*; D009946:Organothiophosphorus Compounds / Q000633:toxicity*; D013154:Spleen / Q000187:drug effects* / Q000276:immunology; D017210:Tilapia / Q000097:blood / Q000276:immunology*; D000097797:Glyphosate
D001798:Blood Proteins; D005998:Glycine; D006540:Herbicides; D007306:Insecticides; D009946:Organothiophosphorus Compounds; D000097797:Glyphosate; C002108:edifenphos