Ht-2 T-2 Toxins
Ht-2 T-2 Toxins - Related Videos
18:25
Live Imaging Assay for Assessing the Roles of Ca2+ and Sphingomyelinase in the Repair of Pore-forming Toxin Wounds
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Cited by 13 •
2013
Live imaging of cells exposed to the lipophilic dye FM1-43 allows precise determination of the kinetics by which pore-forming toxins are removed from the plasma membrane. This is a sensitive assay that can be used to assess requirements for Ca2+, sphingomyelinase and other factors on plasma membrane repair.
01:13
meta-Directing Deactivators: –NO2, –CN, –CHO, –CO2R, –COR, –CO2H
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2023
All meta-directing substituents are deactivating groups. These substituents withdraw electrons from the aromatic ring, making the ring less reactive toward electrophilic substitution. For example, the nitration of nitrobenzene is 100,000 times slower than that of benzene because of the deactivating effect of the nitro group. The first step in an electrophilic aromatic substitution is the addition of an electrophile to form a resonance-stabilized carbocation. The energy diagrams for the...
01:20
2° Amines to N-Nitrosamines: Reaction with NaNO2
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2023
Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion. Figure 1. The nitration reaction of secondary amines The...
10:11
The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations
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Cited by 13 •
2016
Here, we present small core incubations for the measurement of sediment-water gas and solute exchange. These will provide reliable measurements of sediment-water exchange that assess the role of sediment in influencing biological and biogeochemical processes in aquatic ecosystems.
08:10
In Vivo 2-Photon Calcium Imaging in Layer 2/3 of Mice
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Cited by 28 •
2008
To understand network dynamics of microcircuits in the neocortex, it is essential to simultaneously record the activity of a large number of neurons . In-vivo two-photon calcium imaging is the only method that allows one to record the activity of a dense neuronal population with single-cell resolution .
FAQs
Their primary cellular target is ribosomal peptidyl transferase, an activity required during protein synthesis. By interfering with this function, the toxins prevent cells from producing proteins normally. The resulting stress is especially consequential in tissues with many actively dividing cells, helping explain damage in the gastrointestinal tract, bone marrow, and immune system.
Rapidly dividing cells require continuous protein production to grow, maintain cellular functions, and replace damaged or aging cells. Interference with ribosomal activity therefore has strong effects in the gastrointestinal tract, bone marrow, and immune system. These tissue targets connect the molecular action of the toxins with their biological effects after ingestion.
Fusarium fungi produce T-2 and HT-2 toxins as secondary metabolites, so contamination is linked to the presence and activity of these fungi in agricultural systems. Cereal grains and animal feed are important materials of concern because they can carry the toxins into food or livestock production pathways, extending the issue beyond fungal biology alone.
Detection and analysis establish whether these contaminants are present in materials connected with food and animal production. That information supports evaluation of potential effects on livestock health, food safety, and crop quality. It also provides a scientific basis for risk assessment and for deciding where contamination-reduction efforts should be directed.
Research on these toxins supports several connected goals: assessing risks from contaminated grain or feed, improving fungal disease management, and developing strategies to reduce exposure during grain production and processing. Because contamination can affect both crops and animals, the work links fungal biology with agricultural quality control and food-safety planning.
Contaminated animal feed can expose livestock to compounds that interfere with protein synthesis and damage vulnerable tissues, while contaminated cereal grains raise concerns for food safety. Studying both pathways allows researchers to consider effects across agricultural systems rather than treating crop quality, animal health, and human food protection as separate problems.