盐酸吐根酚碱

(-)-Cephaeline dihydrochloride 是 Cephaeline dihydrochloride 的一种对映异构体。Cephaeline dihydrochloride 是选择性的 CYP2D6 抑制剂,IC50 为 121 μM。

信号通路 >> 代谢酶/蛋白酶 >> 细胞色素P450

研究领域 >> 其他

IC50: 121 μM (CYP2D6)[1] Ki: 54 μM (CYP2D6)[1]

CYP2D6显示出产生9-O-去甲基美金的最高代谢活性,而该酶也显示出产生Cephaeline的显着代谢活性。 Cephaeline对CYP2C9,CYP2D6和CYP3A4的IC50分别超过1000,121和1000μM。进行进一步的实验以确定Cephaeline对CYP2D6和CYP3A4活性的抑制常数(Ki)。对于CYP2D6和CYP3A4,各种Cephaeline浓度的Dixon图的图形分析对于CYP2D6和CYP3A4分别产生54和355μM的Kis： 1]。

将Cephaeline溶解在甲醇中，得到浓度为0.1,1,10,100μM（只有茶碱-O-去甲基酶活性与Cephaeline; 0.0985，2001年6月6790.985,9.85,98.5μM）[1]。在不存在和存在上述浓度的Cephaeline或Emetine的情况下，将人肝微粒体蛋白与选择的标记物底物一起孵育（1-100μM，仅使用Cephaeline的茶碱-O-脱甲基酶活性;0.0985-98.5μM，终浓度）。选择孵育条件使得产物形成相对于孵育时间和蛋白质浓度都是线性的，其中底物浓度等于或低于每种酶的Km。呋喃茶碱，磺胺苯丙胺，反苯环丙胺，奎尼丁和酮康唑，CYP1A2，CYP2C9，CYP2C19，CYP2D6和CYP3A4的选择性抑制剂的作用也分别在相同的微粒体样品中测定，以提供与Cephaeline和Emetine的抑制电位（IC50）的比较。朝着个人的CYP形式。 Cephaeline和Emetine的Ki是通过使用相同的汇集的微粒体样品来确定的。这通过改变初始底物浓度（bufuralol 8,16和32μM;睾酮45,90和180u M）并使用10,50和100μM的几种抑制剂浓度来实现。通过对Dixon图的图形分析估计Kis。这些值随后用作非线性最小二乘回归分析的初始估计[1]。

[1]. Asano T, et al. Metabolism of ipecac alkaloids Cephaeline and Emetine by human hepatic microsomal cytochrome P450s, and their inhibitory effects on P450 enzyme activities. Biol Pharm Bull. 2001 Jun;24(6):678-82.

n-[4-[2-乙基-1-(1H-1,2,4-噻唑-1-基)丁基]苯基]-2-苯并噻唑胺 | 芹菜素; 芹黄素; 5,7,4'-三羟基黄酮 | 可比司他 | 人参皂苷CK | 吉非罗齐 | 艾沙康唑 | 柚皮苷 | 6-[(7S)-7-羟基-6,7-二氢-5H-吡咯并[1,2-C]咪唑-7-基]-N-甲基-2-萘甲酰胺 | 普罗地芬 盐酸盐 | 高良姜素; 3,5,7-三羟基黄酮 | (3BETA)-17-(1H-苯并咪唑-1-基)雄甾-5,16-二烯-3-醇 | 四氢姜黄素 | 1-氨基苯并三唑 | 呋拉茶碱 | 人参皂苷 F1

MOLECULAR FORMULA :

C28-H38-N2-O4.2Cl-H

MOLECULAR WEIGHT :

539.60

WISWESSER LINE NOTATION :

T B666 GNTT&J E2 LO1 MO1 D1- BT66 CMT&J HQ IO1 &GH

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

10 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

JPETAB Journal of Pharmacology and Experimental Therapeutics. (Williams & Wilkins Co., 428 E. Preston St., Baltimore, MD 21202) V.1- 1909/10- Volume(issue)/page/year: 104,421,1952

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

6500 ug/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

JPETAB Journal of Pharmacology and Experimental Therapeutics. (Williams & Wilkins Co., 428 E. Preston St., Baltimore, MD 21202) V.1- 1909/10- Volume(issue)/page/year: 10,73,1917/1918

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

74970 ug/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

NCISP* National Cancer Institute Screening Program Data Summary, Developmental Therapeutics Program. (Bethesda, MD 20205) Volume(issue)/page/year: JAN1986

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

20530 ug/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

NCISP* National Cancer Institute Screening Program Data Summary, Developmental Therapeutics Program. (Bethesda, MD 20205) Volume(issue)/page/year: JAN1986

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

8 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

JPETAB Journal of Pharmacology and Experimental Therapeutics. (Williams & Wilkins Co., 428 E. Preston St., Baltimore, MD 21202) V.1- 1909/10- Volume(issue)/page/year: 10,73,1917/1918