Avermectin B1a | CAS:65195-55-3

Chemscene社は、高品質な低分子化合物を提供しているメーカーです。
Chemscene社のAvermectin B1a(CAS:65195-55-3)をご紹介します。

※本製品は研究用です。研究用以外には使用できません。

Name:Avermectin B1a; Abamectin B1a
Cat. No. :CS-0718
CAS No. :65195-55-3
Formula:C48H72O14
M. Wt. : 873.08
Solubility:10 mM in DMSO

Avermectin B1a is an antiparasitic agent that paralyzes nematodes without causing hypercontraction or flaccid paralysis.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)[3]. 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[4].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[1]. 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[2].

Huang J, et al. Avermectin B1a binds to high- and low-affinity sites with dual effects on the gamma-aminobutyric acid-gated chloride channel of cultured cerebellar granule neurons. J Pharmacol Exp Ther. 1997 Apr;281(1):261-6. Sun Y, et al. [Effects of avermectin B1a on soil microorganism and earthworm (Eisenia fetida)]. Ying Yong Sheng Tai Xue Bao. 2005 Nov;16(11):2140-3. Sun Y, et al. Bioaccumulation and elimination of avermectin B1a in the earthworms (Eisenia fetida). Chemosphere. 2005 Jul;60(5):699-704. Payne GT, et al. Activation of gamma-aminobutyric acid insensitive chloride channels in mouse brain synaptic vesicles by avermectin B1a. J Biochem Toxicol. 1991 Winter;6(4):283-92.