Piperoxan hydrochloride (Benodaine, Fourneau 933, F933, DL-Piperoxan) 是 α2 (alpha 2) adrenoceptor 的拮抗剂。
Target | Value |
α2 adrenoceptor
()
|
When the medulla is superfused with α
2
adrenoceptor antagonist Piperoxane (50 μM; 5 min) while the pons is with artificial cerebrospinal fluid (ACSF), the three inactive preparations display rhythmic phrenic bursts at a low frequency (2-4 c/min), and the phrenic burst frequency of the 12 active ones significantly increases during the last 3 min of Piperoxane applications (163±12% of the previous mean frequency). In active medullary preparations, the effects of NA applications (25 μM; 5 min) are compared when the preparations sre superfused either by ACSF (n=8) or by the α2 adrenoceptor antagonist Piperoxane (50 μM; PIP-ACSF; n=5). NA applications either alone (NA-ACSF) or with Piperoxane (PIP-ACSF+NA) significantly increases the phrenic burst frequency. However, the blockage of the medullary α2 adrenoceptors by Piperoxane potentiates a phrenic burst frequency increase: during the fifth minute of NA applications, the phrenic burst frequency reached 171±11% of the mean control value when ACSF is applied alone and 234±21% of the mean control value when PIP-ACSF is applied in control condition.
类别
有毒物品
毒性分级
中毒
急性毒性
口服-小鼠 LD50; 502 毫克/公斤; 腹腔-小鼠 LD50: 175 毫克/公斤
可燃性危险特性
可燃; 燃烧产生有毒氮氧化物和氯化氢烟雾
储运特性
通风低温干燥
灭火剂
干粉,泡沫,沙土,二氧化碳, 雾状水