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. 2023 May 24;11(6):1384. doi: 10.3390/microorganisms11061384

Table 3.

Fungal mycotoxins and their effect on human/animal health [295,296].

Mycotoxins Source Effect on Human/Animal Health References
Aflatoxins B1
B2
G1
G2
Maize, peanuts, copra, corn, coffee beans, rice, sorghum, soybean
  • Cause hepatic and extrahepatic carcinogenesis by inducing DNA single-strain breaks;

  • Direct contact of AFB1 with skin can result in tumor formation, hair loss, erythema and ulcer;

  • Decrease the proliferation of gastrointestinal epithelial cells;

  • AFB1 is associated with genotoxicity in isolated epithelial cells of jejunum;

  • In high doses, suppresses the alternative pathway of complement activation;

  • Inhalation of AFB1 causes primary lung cancer;

  • It inhibits the production and function of natural killer cells;

  • Repeated exposure of mice to AFB1 causes the decline of CD3 and CD8 T cells in intestinal mucosa.

[353,356,357,358]
Ochratoxins A barley, wheat, coffee beans, citrus, grape, beer, fruits, soybean, cereals; dried fruits; breast milk of exposed mothers; smoked and salted dried fish; cheese
  • Causes porcine and poultry nephropathy; damages the integrity of renal epithelial cells;

  • Long-term exposure is associated with impairment of renal function, which leads to enzymuria, polyuria; red tongue, thirst, bitter taste;

  • Induces the increase in reactive oxygen species in rat proximal tubule cells, leading to the depletion of intracellular gluthatione and cell death;

  • Exhibits a neurotoxicity effect in human astrocytes, acting as an anti-proliferation agent and mediating mitochondria-dependent apoptosis.

[359,360,361,362,363]
Fumonisins Maize; rice, wheat, sorghum; barley, oats
  • Affect newborns neural tube development; cause brain lesion in horses and pulmonary edema in pigs;

  • Disrupt the myelin synthesis process, causing leukoencephalomalacia in horses;

  • Alter the cytokine profile of different organs and cell types, mediating the increased expression of TNF-α and interleukin-1β in mouse liver and kidney.

[337,364,365,366]
Zearalenone Maize; wheat; barley; oats; grains; animal feed
  • Affect the reproductive system of laboratory animals, determining the appearance of changes in reproductive tract, reduced fertility, and increased embryo-lethal resorption, and affecting the progesterone and estradiol serum level;

  • Induce liver lesions and alter the hepatic function of rabbits and rats;

  • Stimulate the growth of human breast cancer cells.

[367,368,369,370,371]
Patulin Fruits; fruit juices, cheese, wheat
  • Induces erythrocyte death (eryptosis) by stimulating the entry of Ca2+ inside the cells;

  • Repeated exposure of rats to sub-acute administration of patulin causes neurotoxicity (tremors, convulsion) and ATPase inhibition with direct consequences in lipid metabolism;

  • Long-term exposure leads to decreasing sperm count.

[372,373,374]
Trichothecenes Deoxynivalenol Maize; wheat; barley; oats; grains; animal feed
  • Vomiting, digestive disorders, oxidative damage, reproductive toxicity;

  • Inhibits protein and nucleic acid synthesis through direct binding of ribosomal peptide transferase active sites and activation of cell kinases;

  • Triggers MAPK mediated up-regulation of pro-inflammatory cytokine expression and apoptosis;

  • Exhibit strong embryo toxicity (decreasing fetal body weight, crown-rump length and vertebral ossification).

[337,375,376,377,378]
Nivalenol
  • Increase levels of MAPKs and phosphatase;

  • Causes nausea, diarrhea, and vomiting;

  • Increases IgA concentration and its accumulation in the glomerular mesangium;

  • Inhibits the proliferation of human mitogen-stimulated lymphocytes, thus exerting immunosuppressive effects.

[337,379,380]
T-2 toxin and HT-2 toxin Maize, oat, barley, wheat, rice, soybean
  • Acute poisoning symptoms such as: nausea, abdominal pain, diarrhea, bloody stools, weight loss and decreased immunity;

  • Affect cell cycle, causing chondrocytes, astrocytes, hepatocytes and epidermal basal cell apoptosis;

  • TReduce antibody formation and alter leukocytes counts;

  • Affect the innate immune response by decreasing the activity of blood alkaline phosphatase.

[337,381,382,383,384,385]