普仑司特

Pranlukast 是一种高效的竞争性的选择性 leukotriene 拮抗剂。Pranlukast 抑制 [3H]LTE4,[3H]LTD4 和 [3H]LTC4 与肺膜结合,Ki 分别为 0.63±0.11,0.99±0.19 和 5640±680 nM。

信号通路 >> G 蛋白偶联受体/G 蛋白 >> 白三烯受体

研究领域 >> 炎症/免疫

LTE4:0.63 nM (Ki)

LTD4:0.99 nM (Ki)

LTC4:5640 nM (Ki)

在放射性配体结合试验中,普仑司特(ONO-1078)抑制[3H] LTE4,[3H] LTD4和[3H] LTC4与肺膜的结合,Kis分别为0.63±0.11,0.99±0.19和5640±680 nM。 。普仑司特对[3H] LTD4结合的拮抗作用具有竞争性。在功能实验中,普仑司特显示出针对LTC4和LTD4诱导的豚鼠气管和肺实质条带收缩的竞争性拮抗作用,pA2范围为7.70至10.71。在存在LTC4生物转化为LTD4的抑制剂的情况下,普仑司特还拮抗LTC4诱导的豚鼠气管收缩(pA2 = 7.78)。普仑司特显着逆转LTD4诱导的长期收缩而不影响KCl-和BaCl2诱导的豚鼠气管收缩[1]。通过用CysLT1受体拮抗剂普仑司特(10μM)预处理抑制氧-葡萄糖剥夺(OGD)诱导的CysLT1受体的核转位。普仑司特保护内皮细胞免受缺血样损伤。还评估了CysLT1受体拮抗剂普仑司特和5-脂氧合酶抑制剂Zileuton对易位的影响。结果显示,Pranlukast,但不是Zileuton,在OGD后6小时抑制CysLT1受体的转运[2]。

在注射LPS(每只小鼠50 p,g)之前24小时腹膜内注射角叉菜胶(CAR,每只小鼠5mg)静脉注射各种剂量的普仑司特(ONO-1078; 40,20和10 mmol/kg),AA-861 (20,10和5mmol/kg),吲哚美辛(40mmollkg)和对照在用50μg的LPS攻击前30分钟皮下注射到小鼠中。对于AA-861,最大可溶性剂量在10％DMSO中为0.6mmol/mL,在普仑司特中在10％乙醇中为1.2mmol/mL。这些溶液用作治疗的最大剂量。相对于对照小鼠,小鼠的AA-861-普仑司特治疗小鼠的死亡率显着降低。用CAR(5mg ip)预处理使小鼠对LPS的作用更敏感。虽然LPS(每只小鼠50 p,g)给药后72小时每种溶剂处理的小鼠的存活率为20％,但用AA-861(20 mmol/kg)或普仑司特(40 mmol/kg)进行sc处理显着增加LPS给药后的存活率(AA-861,P <0.001;普仑司特,P <0.01)[3]。

EA.hy926细胞在Dulbecco改良的Eagle培养基（DMEM）中培养，补充有10％热灭活的胎牛血清，青霉素（100U / mL）和链霉素（100mg / mL）。在接种细胞后24小时进行实验。执行OGD。简而言之，原始介质被移除;用无葡萄糖的Earle平衡盐溶液（EBSS）洗涤细胞两次，并置于新鲜的无葡萄糖EBSS中。然后将培养物置于含有5％CO 2和95％N 2的培养箱中，在37℃下培养2至8小时。在正常条件下将对照培养物维持在含葡萄糖的EBSS中。在OGD暴露前30分钟将10μM普仑司特，10μMZileuton，5-LOX抑制剂或10μM吡咯烷二硫代氨基甲酸酯（PDTC）加入培养物中并在OGD期间维持[2]。

小鼠[3]使用雄性ddY小鼠。使用的所有小鼠都是7至8周龄。在小鼠中诱导内毒素休克。简言之，在LPS攻击前24小时，腹膜内（ip）注射CAR（5mg，在0.5mL生理盐水中）作为引发剂。将LPS（50μl，在0.5mL生理盐水中）静脉内注射到尾静脉中作为诱导剂。在LPS激发前30分钟，将指定剂量的AA-861，普仑司特（40,20和10mmol / kg），盐水，DMSO或乙醇以1mL的体积皮下（sc）给予小鼠背部。 。两种药物均注射sc，因为CAR ip预处理引起腹膜炎。为了检查内源性TNF在CAR预处理小鼠中的作用，在LPS攻击之前静脉内（iv）注射2×105U兔抗TNF-α抗体或0.2mL兔的正常血清[3]。

[1]. Obata T, et al. In vitro antagonism of ONO-1078, a newly developed anti-asthma agent, against peptide leukotrienes in isolated guinea pig tissues. Jpn J Pharmacol. 1992 Nov;60(3):227-37.

[2]. Fang SH, et al. Nuclear translocation of cysteinyl leukotriene receptor 1 is involved in oxygen-glucose deprivation-induced damage to endothelial cells. Acta Pharmacol Sin. 2012 Dec;33(12):1511-7.

[3]. Ogata M, et al. Protective effects of a leukotriene inhibitor and a leukotriene antagonist on endotoxin-induced mortality in carrageenan-pretreated mice. Infect Immun. 1992 Jun;60(6):2432-7.

MK-571钠 | 扎鲁司特 | 奈多罗米 | 普仑司特 | AS-35 | LY223982 | 甲磺酸达布非龙 | LM-1484 | 喹托司特钠 | RG-12525 | RS-601 | Tipelukast | CI-949 | CP-105696 | CP-96486

MOLECULAR FORMULA :

C27-H23-N5-O4.1/2H2-O

MOLECULAR WEIGHT :

490.52

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

LD - Lethal dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

>2 gm/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 44,197,1992

TYPE OF TEST :

LD - Lethal dose

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

>2 gm/kg

TOXIC EFFECTS :

Skin and Appendages - hair

REFERENCE :

OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 44,197,1992

TYPE OF TEST :

LD - Lethal dose

ROUTE OF EXPOSURE :

Intravenous

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

>30 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 44,197,1992

TYPE OF TEST :

LD - Lethal dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

>2 gm/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 44,197,1992

TYPE OF TEST :

LD - Lethal dose

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

>2 gm/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 44,197,1992

TYPE OF TEST :

LD - Lethal dose

ROUTE OF EXPOSURE :

Intravenous

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

>30 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 44,197,1992

TYPE OF TEST :

LD - Lethal dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

>3 gm/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 44,197,1992 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

90 gm/kg/13W-C

TOXIC EFFECTS :

Blood - pigmented or nucleated red blood cells Blood - other changes Blood - changes in erythrocyte (RBC) count

REFERENCE :

OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 44,245,1992

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

360 gm/kg/52W-C

TOXIC EFFECTS :

Kidney, Ureter, Bladder - changes in bladder weight Nutritional and Gross Metabolic - changes in potassium Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - transaminases

REFERENCE :

OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 44,263,1992 ** REPRODUCTIVE DATA **

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

25 gm/kg

SEX/DURATION :

female 17-21 day(s) after conception lactating female 20 day(s) post-birth

TOXIC EFFECTS :

Reproductive - Maternal Effects - other effects Nutritional and Gross Metabolic - weight loss or decreased weight gain

REFERENCE :

IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970- Volume(issue)/page/year: 23,846,1992