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Paxilline is a toxic, tremorgenic diterpene indole polycyclic alkaloid molecule produced by Penicillium paxilli which was first characterized in 1975. [1] [2] Paxilline is one of a class of tremorigenic mycotoxins, is a potassium channel blocker, and is potentially genotoxic.
The trichothecene mycotoxins are toxic to humans, other mammals, birds, fish, a variety of invertebrates, plants, and eukaryotic cells. [21] The specific toxicity varies depending on the particular toxin and animal species, however the route of administration plays a significantly higher role in determining lethality.
Aspergillus ochraceus is a mold species in the genus Aspergillus known to produce the toxin ochratoxin A, one of the most abundant food-contaminating mycotoxins, and citrinin. It also produces the dihydroisocoumarin mellein. It is a filamentous fungus in nature and has characteristic biseriate conidiophores.
Penitrem A impairs GABAergic amino acid neurotransmission and antagonizes high-conductance Ca 2+-activated potassium channels in both humans and animals. [4] Impairment of the GABAergic amino acid neurotransmission comes with the spontaneous release of the excitatory amino acids glutamate and aspartate as well as the inhibitory neurotransmitter γ-aminobutyric acid (GABA). [4]
There were outbreaks of dog food containing aflatoxin in North America in late 2005 and early 2006, [38] and again in late 2011. [39] Mycotoxins in animal fodder, particularly silage, can decrease the performance of farm animals and potentially kill them. [40] [4] Several mycotoxins reduce milk yield when ingested by dairy cattle. [40]
Toxin Reviews is a quarterly peer-reviewed medical journal covering research on multidisciplinary research in the area of toxins derived from animals, plants and microorganisms. The aim is to publish reviews that are of broad interest and importance to the toxicology as well as other life science communities.
Fumonisins were the most recent mycotoxin found to affect humans and animals negatively. The most produced toxin for this group of fungi is fumonisin B1. [2] Studies have shown that it can cause diseases such as equine leukoencephalomalacia in horses, hydrothorax and porcine pulmonary edema in swine, and it can negatively affect the immune system.
Mycotoxicology is the branch of mycology that focuses on analyzing and studying the toxins produced by fungi, known as mycotoxins. [1] In the food industry it is important to adopt measures that keep mycotoxin levels as low as practicable, especially those that are heat-stable.