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Avermectin B1a

CAS No. : 65195-55-3

MCE 站：Avermectin B1a

产品活性：Avermectin B1a 是一种抗寄生虫剂，能够使线虫瘫痪。

研究领域：Anti-infection

作用靶点：Parasite  |  Antibiotic

In Vitro: [³H]AVM B1a preferentially binds to synaptic membranes from several regions of rat brain. [³H]AVM B1a specific binding to intact monolayers of granule cells increases rapidly with time of incubation and reaches equilibrium after approximately 20 min at 24°C. Higher concentrations of [³H]AVM B1a leads to markedly greater nonspecific binding, 60% at 25 nM. Various AVM analogs also produce concentration-dependent inhibition of [³H]AVM B1a binding in intact cerebellar neurons. AVM B1a and moxidectin are similar in potency (IC₅₀ values, 120 and 126 nM, respectively). AVMB1a-stimulated chloride efflux from mouse brain synaptic vesicles results from the activation of GABA-insensitive chloride channels and that this action is distinct from their previously documented effects on GABA-gated chloride channels in mouse brain preparations.

In Vivo: Bacteria are significantly inhibited when the AVM B1a concentration is higher than 83.3 mg/kg, while fungi are less impaired in soil. Soil respiration is also inhibited by high concentration AVM B1a, which differs with soil types. The half lethal dosage (LD₅₀) of AVM B1a to soil earthworm is estimated as 4.63 mg × cm² in filter paper contact test, and as 24.13 and 17.06 mg/kg, respectively after treated 7 and 14 days in artificial soil. Iin artificial soil, the LC50 of AVM B1a on earthworms are 24.1 mg/kg and 17.1 mg/kg, respectively, for 7 and 14 days. About 80.0% and 94.8% of the accumulated AVM B1a are eliminated respectively in two groups within 1 day after they are exposed to AVM B1a-free soil, but a trace amount of AVM B1a is found for a relative long time in earthworms.

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