1,5-Bis(4-amidinophenoxy)pentane (pentamidine) is a potent inhibitor of [3H]idazoxan binding to imidazoline I2 binding sites.
1,5-Bis(4-amidinophenoxy)pentane (pentamidine) is a potent inhibitor of [3H]idazoxan binding to imidazoline I2 binding sites.
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1,5-Bis(4-amidinophenoxy)pentane (pentamidine) 是 [3H]idazoxan 与咪唑啉 I2 结合位点结合的有效抑制剂。
DOI:
10.1016/s0014-2999(98)00386-0
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发表时间:
1998
影响因子:
5
通讯作者:
R. Tidwell
中科院分区:
文献类型:
--
作者:
DOROTHY H. Wood;J. Hall;Beate G. Rose;R. Tidwell
The aromatic diamidine 1,5-bis(4-amidinophenoxy)pentane (pentamidine) is used for treatment and prophylaxis of Pneumocystis carinii pneumonia in patients with Acquired Immune Deficiency Syndrome. Clinical use of pentamidine has been restricted by significant toxicity, that includes hypotension, and hypoglycemia. Although clinical toxicity is well described, the mechanisms are still poorly understood. Competitive binding analyses using [3H ]idazoxan as the radioligand, and cirazoline to define non-specific binding, demonstrate that pentamidine binds to an imidazoline I2binding site on rat liver membranes with a Kiof 1.4±0.22 nM. The Kiindicates that pentamidine inhibits radioligand binding at imidazoline I2sites with an affinity approximating the most potent known ligands and may be related to pentamidine toxicity. Moreover, pentamidine analogs inhibit radioligand binding with a range of affinities that vary according to their structure. Two candidate drugs, Compounds 5 and 6, are more active than pentamidine in the corticosteroid-suppressed rat model of P. carinii pneumonia, yet have different affinities for the imidazoline I2site (Ki5=50.1±1.06 nM and Ki6=∼3500 nM). Affinity for this site does not correlate with antimicrobial activity (r=0.60; p=0.09) or the calculated log of the octanol:water partition coefficient (ClogP) (r=−0.38; p=0.22).
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影响因子:
56.9
作者:
LI, G;REGUNATHAN, S;REIS, DJ
通讯作者:
REIS, DJ
DOI:
--
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Parini,A;Coupry,I;Graham,RM;Uzielli,I;Atlas,D;Lanier,SM
通讯作者:
Lanier,SM
DOI:
--
发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Limon,I;Coupry,I;Lanier,SM;Parini,A
通讯作者:
Parini,A
DOI:
--
发表时间:
1984-07
期刊:
The Journal of pharmacology and experimental therapeutics
影响因子:
--
作者:
P. Bousquet;J. Feldman;J. Schwartz
通讯作者:
P. Bousquet;J. Feldman;J. Schwartz
DOI:
--
发表时间:
1991
期刊:
The Journal of pharmacology and experimental therapeutics
影响因子:
--
作者:
Berger,BJ;Reddy,VV;Le,ST;Lombardy,RJ;Hall,JE;Tidwell,RR
通讯作者:
Tidwell,RR