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Penicillium and Aspergillus Toxicosis

Penicillium, Aspergillus

For medical students2 min readUpdated 2026-10-10

Poisoning by metabolic products of molds belonging to the genera Penicillium and Aspergillus represents a less common, but clinically highly significant group of conditions. These mycotoxicoses are characterized by severe damage to the central nervous system, liver, respiratory, and cardiovascular systems, and can be fatal.

Target organsCentral nervous system, liver, lungs, and heart
IslanditoxicosisSpecific liver damage caused by Penicillium islandicum toxin
CitreoviridinCauses severe descending paralysis with a risk of mortality
Patulin toxicosisReported in Germany, France, Japan, and the USA since 1954

Citreoviridin Toxicosis

This severe poisoning is associated with the mycotoxin citreoviridin. This toxin exhibits a pronounced tropism for neural structures and cardiomyocytes.

Islanditoxicosis

The condition is initiated by the ingestion of toxins produced by a specific mold species, Penicillium islandicum.

The main active principle is islanditoxin. Unlike citreoviridin, this poison exhibits strict hepatotoxicity. The primary and only target mentioned in the classic presentation of this toxicosis is the liver, the cells of which undergo massive destruction.

Patulin Toxicosis

One of the most studied toxicosis types in this group. It is caused not by a single species, but by a whole group of micromycetes belonging to the genera Penicillium (P. patulum, P. expansum, P. urticae) and Aspergillus (A. elevatus, A. terreus).

The active substance is the mycotoxin patulin.

Main sources of contamination:

  1. Barley malt.
  2. Sprouted wheat.
  3. Rotten apples (as well as processed products such as cider).

Clinical presentation: Patulin causes complex systemic damage. The clinical picture is dominated by signs of neurotoxicosis, pulmonary edema, intractable vomiting, and dermatitis. Epidemiologically, the disease has been actively monitored since 1954, with outbreaks and sporadic cases recorded in Germany, France, Japan, and the USA.

Mnemonic

To remember the causative agents of patulin toxicosis (Penicillium), use the phrase: "Patulin Expansively Utters" (P. patulum, P. expansum, P. urticae).

Frequently asked questions

What methods are used for laboratory diagnosis of mycotoxicoses caused by Penicillium and Aspergillus?

Laboratory diagnosis of mycotoxicoses involves methods based on the detection of the fungi themselves or their metabolites. Testing includes extraction of the toxin from the sample using an organic solvent followed by its identification.

Main identification methods:

  • Physicochemical — chromatography and spectrophotometry.
  • Biological — bioassays using chicken embryos, cell cultures, laboratory animals (rats, mice, guinea pigs), birds (ducklings, pigeons), and sensitive microorganisms.
  • Immunological — enzyme-linked immunosorbent assay (ELISA) and radioimmunoassay (RIA).
Which toxin causes descending paralysis?

Descending paralysis is a characteristic clinical sign of citreoviridin toxicosis caused by the mycotoxin citreoviridin.

Which foods most commonly cause patulin toxicosis?

Sources of patulin include barley malt, sprouted wheat, and rotten apples, which are frequently used to produce cider.

What is the target organ in islanditoxicosis?

In islanditoxicosis, caused by the fungus Penicillium islandicum, the primary target is the liver (hepatotoxic effect).

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