Immunotoxicological and biochemical effects of aflatoxins in rats prevented by Tunisian montmorillonite with reference to HSCAS.
OBJECTIVE
Previously we reported that hydrated sodium calcium aluminosilicate (HSCAS) and Tunisian Montmorillonite (TM) had an ability to sorb aflatoxins with a high affinity. Addition of these compounds to feedstuffs contaminated with aflatoxins has shown protective effects against the development of aflatoxicosis in farm and laboratory animals. The objective of the current study was to compare the efficiency of HSCAS and the TM in respect to the protection against immunotoxicological effects of aflatoxins in rats.


METHODS
Animals fed an aflatoxin-contaminated diet (2.5 mg/kg diet) showed a significant decrease in all hematological parameters, cholesterol, triglycerides, cholinesterase, total protein, albumin, zinc and copper concentrations.


RESULTS
Such feeding significantly increased createnine, bilirubin, urea nitrogen, alkaline phosphatase and transaminases concentrations. The immunological results showed a significant decrease in lymphocytes of the total white blood cells, immunoglobulin profile (Ig G and Ig A), T-cells sub-types (CD3(+), CD4(+) and CD8(+)), NK and pro-inflammatory cytokines (TNFalpha and IL-1beta) typical of aflatoxicosis. Both HSCAS and TM at the level of 5 g/kg contaminated diet resulted in a significant improvement in all immunological parameters-in lymphocyte, immunoglobulin profile, T-cells sub-types and pro-inflammatory cytokines as well as the mineral status and the biochemical parameters.


CONCLUSIONS
The deleterious effects of aflatoxin could be overcome or, at least, diminished by the addition of sorbents. Moreover, both tested sorbents by themselves had no toxic effects and bind aflatoxin with high affinity.
Abbès
Samir
S
Laboratory of Immunology, Environmental Microbiology and Cancerology, Faculty of Sciences, Zarzouna, Tunisia. abb_samir@yahoo.fr
Ben Salah-Abbès
Jalila
J
Abdel-Wahhab
Mosaad A
MA
Ouslati
Ridha
R
D000327:Adsorption; D000348:Aflatoxins / Q000037:antagonists & inhibitors* / Q000276:immunology / Q000633:toxicity; D000418:Albumins / Q000032:analysis; D000538:Aluminum Silicates / Q000494:pharmacology*; D000818:Animals; D001546:Bentonite / Q000494:pharmacology*; D001798:Blood Proteins / Q000032:analysis; D001806:Blood Urea Nitrogen; D002784:Cholesterol / Q000097:blood; D002802:Cholinesterases / Q000097:blood; D003404:Creatinine / Q000097:blood; D005260:Female; D007375:Interleukin-1 / Q000097:blood; D007962:Leukocytes / Q000187:drug effects; D008099:Liver / Q000187:drug effects / Q000201:enzymology; D019216:Metals, Heavy / Q000097:blood; D051381:Rats; D014280:Triglycerides / Q000097:blood; D014409:Tumor Necrosis Factor-alpha / Q000097:blood; D014416:Tunisia
D000348:Aflatoxins; D000418:Albumins; D000538:Aluminum Silicates; D001798:Blood Proteins; D007375:Interleukin-1; D019216:Metals, Heavy; D014280:Triglycerides; D014409:Tumor Necrosis Factor-alpha; D001546:Bentonite; C087965:sodium calcium aluminosilicate, hydrated; D002784:Cholesterol; D003404:Creatinine; D002802:Cholinesterases