Evidence map›Paper›PMID 17985237›Full record

ArticleNeurochemical research2008

Kinetics of human serum butyrylcholinesterase inhibition by a novel experimental Alzheimer therapeutic, dihydrobenzodioxepine cymserine.

Mohammad A Kamal, Peter Klein, Weiming Luo, Yazhou Li, Harold W Holloway, David Tweedie, Nigel H Greig

Open access · greenAbstract read
In one paragraph

Article in Neurochemical research, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.6field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 69 citations in OpenAlex.

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  13. Determination of sugars in honey by liquid chromatography.Saudi journal of biological sciences · 2011
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 3 countries.

Mohammad A KamalEnzymoics, 7 Peterlee Pl., Hebersham, NSW 2770, Australia. makamal@optusnet.com.au
Peter Klein
Weiming Luo
Yazhou Li
Harold W Holloway
David Tweedie
Nigel H Greig
Institute on Aging · USInstitute of Molecular Life Sciences · HUNational Institute on Aging · US

Funding

Design And Development Of Experimental Therapeutics ((Systemic & Neurodegenerative Disorders and Alzheimer's Disease)ZIAAG000311 · NIA · NATIONAL INSTITUTE ON AGING · PI GREIG, NIGEL H. · 2009 to 2025
$16.0M
Design And Development Of Experimental TherapeuticsZ01AG000311 · NIA · NATIONAL INSTITUTE ON AGING · PI GREIG, NIGEL H. · 2001 to 2008
$1.7M
Intramural NIH HHS Z01 AG000311
6 · The paper itself

Abstract

Cholinergic loss is the single most replicated neurotransmitter deficiency in Alzheimer's disease (AD) and has led to the use of acetylcholinesterase inhibitors (AChE-Is) and unselective cholinesterase inhibitors (ChE-Is) as the mainstay of treatment. AChE-Is and ChE-Is, however, induce dose-limiting adverse effects. Recent studies indicate that selective butyrylcholinesterase inhibitors (BuChE-Is) elevate acetylcholine (ACh) in brain, augment long-term potentiation, and improve cognitive performance in rodents without the classic adverse actions of AChE-Is and ChE-Is. BuChE-Is thereby represent a new strategy to ameliorate AD, particularly since AChE activity is depleted in AD brain, in line with ACh levels, whereas BuChE activity is elevated. Our studies have focused on the design and development of cymserine analogues to induce selective time-dependent brain BuChE inhibition, and on the application of innovative and quantitative enzyme kinetic analyses to aid selection of drug candidates. The quantitative interaction of the novel inhibitor, dihydrobenzodioxepine cymserine (DHBDC), with human BuChE was characterized. DHBDC demonstrated potent concentration-dependent binding with BuChE. The IC(50) and specific new kinetic constants, such as K(T50), P(PC), K(T1/2) and R(I), were determined at dual substrate concentrations of 0.10 and 0.60 mM butyrylthiocholine and reaction times, and are likely attainable in humans. Other classical kinetic parameters such as K(ia), K(ma), V(ma) and V(mi) were also determined. In synopsis, DHBDC proved to be a highly potent competitive inhibitor of human BuChE in comparison to its structural analogue, cymserine, and represents an interesting drug candidate for AD.

Indexed as

Alzheimer DiseaseBenzoxepinsButyrylcholinesteraseCholinesterase InhibitorsHumansPhysostigmineBenzoxepinsButyrylcholinesteraseCholinesterase Inhibitorsdihydrobenzodioxepine cymserinePhysostigmine

Identifiers

PMID17985237
PMCPMC5201206
OpenAlexW2013785494

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.