Tetrahydroaminacrine

Tetrahydroaminacrine Uses, Dosage, Side Effects, Food Interaction and all others data.

A centerally active cholinesterase inhibitor that 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. Tetrahydroaminacrine has been discontinued for the United States market.

Tetrahydroaminacrine is a parasympathomimetic- a reversible cholinesterase inhibitor that is indicated for the treatment of mild to moderate dementia of the Alzheimer's type. An early pathophysiological feature of Alzheimer's disease that is associated with memory loss and cognitive deficits is a deficiency of acetylcholine as a result of selective loss of cholinergic neurons in the cerebral cortex, nucleus basalis, and hippocampus. Tetrahydroaminacrine is postulated to exert its therapeutic effect by enhancing cholinergic function. This is accomplished by increasing the concentration of acetylcholine at cholinergic synapses through reversible inhibition of its hydrolysis by acetylcholinesterase. If this proposed mechanism of action is correct, tacrine's effect may lessen as the disease progresses and fewer cholinergic neurons remain functionally intact. There is no evidence that tacrine alters the course of the underlying dementing process.

Trade Name Tetrahydroaminacrine
Availability Discontinued
Generic Tacrine
Tacrine Other Names Tacrin, Tacrine, Tacrinum, Tetrahydroaminacrine, Tetrahydroaminoacridine
Related Drugs donepezil, memantine, haloperidol, Aricept, Haldol, Namenda, rivastigmine, Exelon, Haldol Decanoate, Cognex
Type
Formula C13H14N2
Weight Average: 198.2637
Monoisotopic: 198.115698458
Protein binding

55%

Groups Approved, Investigational, Withdrawn
Therapeutic Class
Manufacturer
Available Country
Last Updated: September 19, 2023 at 7:00 am
Tetrahydroaminacrine
Tetrahydroaminacrine

Uses

Tetrahydroaminacrine is an anticholinesterase drug used for the management of Alzheimer's disease symptoms.

For the palliative treatment of mild to moderate dementia of the Alzheimer's type.

How Tetrahydroaminacrine works

The mechanism of tacrine is not fully known, but it is suggested that the drug is an anticholinesterase agent which reversibly binds with and inactivates cholinesterases. This inhibits the hydrolysis of acetylcholine released from functioning cholinergic neurons, thus leading to an accumulation of acetylcholine at cholinergic synapses. The result is a prolonged effect of acetylcholine.

Toxicity

Overdosage with cholinesterase inhibitors can cause a cholinergic crisis characterized by severe nausea/vomiting, salivation, sweating, bradycardia, hypotension, collapse, and convulsions. Increasing muscle weakness is a possibility and may result in death if respiratory muscles are involved. The estimated median lethal dose of tacrine following a single oral dose in rats is 40 mg/kg, or approximately 12 times the maximum recommended human dose of 160 mg/day.

Volume of Distribution

  • 349 ± 193 L

Elimination Route

Tetrahydroaminacrine is rapidly absorbed. Absolute bioavailability of tacrine is approximately 17%.

Half Life

2 to 4 hours

Innovators Monograph

You find simplified version here Tetrahydroaminacrine

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http://classyfire.wishartlab.com/tax_nodes/C0004150
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:45980
http://metacyc.org/META/new-image?type=COMPOUND&object=CPD-10887
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http://www.genome.jp/dbget-bin/www_bget?cpd:C01453
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https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46505487
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http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=8961
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=10318
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=45980
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL95
https://zinc.docking.org/substances/ZINC000019014866
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000558
http://www.pharmgkb.org/drug/PA451576
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/THA
http://www.rxlist.com/cgi/generic2/tacrine.htm
https://www.drugs.com/cdi/tacrine.html
https://en.wikipedia.org/wiki/Tacrine
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