Biomaterial Database

Tetrahydroaminoacridine and related compounds interfere with fura-2 and indo-1. 1992

L Järlebark, and E Heilbronn

Unit of Neurochemistry and Neurotoxicology, University of Stockholm, Sweden.

In earlier experiments, using a fluorimetric method (fura-2), we found what seemed to be a decreased cytoplasmic [Ca2+] in neuroblastoma cells when 1,2,3,4-tetrahydro-9-aminoacridine (THA) was added, but discovered by repeating our work under cell-free conditions, that THA affected the Ca(2+)-fura-2 signal. The present study aimed at investigating the previously observed interference of THA with fura-2. 1 mM THA completely inhibits fluorescence of fura-2 and another Ca(2+)-indicator, indo-1, 1 microM each (apparent IC50 = 40 microM), presumably by absorbing excitation light.

UI	MeSH Term	Description	Entries
D007211	Indoles	Benzopyrroles with the nitrogen at the number one carbon adjacent to the benzyl portion, in contrast to ISOINDOLES which have the nitrogen away from the six-membered ring.
D004305	Dose-Response Relationship, Drug	The relationship between the dose of an administered drug and the response of the organism to the drug.	Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D004347	Drug Interactions	The action of a drug that may affect the activity, metabolism, or toxicity of another drug.	Drug Interaction,Interaction, Drug,Interactions, Drug
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013619	Tacrine	A cholinesterase inhibitor that crosses the blood-brain barrier. Tacrine has been used to counter the effects of muscle relaxants, as a respiratory stimulant, and in the treatment of Alzheimer's disease and other central nervous system disorders.	Tetrahydroaminoacridine,1,2,3,4-Tetrahydro-9-acridinamine,1,2,3,4-Tetrahydroaminoacridine,9-Amino-1,2,3,4-Tetrahydroacridine,Cognex,Romotal,THA,Tacrine Hydrochloride,Tenakrin
D015761	4-Aminopyridine	One of the POTASSIUM CHANNEL BLOCKERS with secondary effect on calcium currents which is used mainly as a research tool and to characterize channel subtypes.	4-Aminopyridine Sustained Release,Dalfampridine,Fampridine-SR,Pymadine,VMI-103,4 Aminopyridine,4 Aminopyridine Sustained Release,Fampridine SR,Sustained Release, 4-Aminopyridine,VMI 103,VMI103
D016257	Fura-2	A fluorescent calcium chelating agent which is used to study intracellular calcium in tissues.	Fura 2
D051381	Rats	The common name for the genus Rattus.	Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus