Effects of deoxynivalenol on calcium homeostasis of concanavalin A--Stimulated splenic lymphocytes of chickens in vitro

Exp Toxicol Pathol. 2016 Apr;68(4):241-5. doi: 10.1016/j.etp.2016.01.001. Epub 2016 Jan 19.

Abstract

In this study, the in vitro effects of the treatment of concanavalin A (Con A)--stimulated splenic lymphocytes with DON were examined. Splenic lymphocytes isolated from chickens were stimulated with 12.5 μg/mL Con A and exposed to deoxynivalenol (DON) (0-50 μg/mL) for 48 h. The intracellular calcium concentration ([Ca(2+)]i), pH, calmodulin (CaM) mRNA levels, and Na(+),K(+)-ATPase and Ca(2+)-ATPase activities were detected. With the DON exposure concentrations increased, the [Ca(2+)]i and CaM mRNA levels gradually increased in a dose-dependent manner, and all the evaluated conconcentrations affected ATPase activity to the same extent. There were significant differences (P<0.05 or P<0.01) between the treatment groups and the control group. These results indicate that an imbalance in calcium homeostasis and intracellular acidification are components of DON cytotoxicity in chicken lymphocytes.

Keywords: ATPase; CaM; Calcium homeostasis; Deoxynivalenol; Mycotoxin.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Calcium / metabolism*
  • Calcium-Transporting ATPases / metabolism
  • Calmodulin / metabolism
  • Cell Culture Techniques
  • Cells, Cultured
  • Chickens / immunology
  • Chickens / metabolism*
  • Concanavalin A / pharmacology*
  • Dose-Response Relationship, Drug
  • Environmental Pollutants / toxicity*
  • Homeostasis / drug effects*
  • Lymphocyte Activation / drug effects
  • Lymphocyte Activation / immunology
  • Lymphocytes / drug effects*
  • Lymphocytes / enzymology
  • Lymphocytes / metabolism
  • Real-Time Polymerase Chain Reaction
  • Sodium-Potassium-Exchanging ATPase / metabolism
  • Spleen / cytology
  • Spleen / drug effects*
  • Spleen / metabolism
  • Trichothecenes / toxicity*

Substances

  • Calmodulin
  • Environmental Pollutants
  • Trichothecenes
  • Concanavalin A
  • Calcium-Transporting ATPases
  • Sodium-Potassium-Exchanging ATPase
  • deoxynivalenol
  • Calcium