Linked Life Data

21536433

Source:http://linkedlifedata.com/resource/pubmed/id/21536433

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2011-5-20
pubmed:abstractText
With the major problems with resistance in parasitic nematodes of livestock to anthelmintic drugs, there is an urgent need to develop new nematocides. In the present study, we employed a targeted approach for the design of a series of norcantharidin analogues (n=54) for activity testing against the barber's pole worm (Haemonchus contortus) of small ruminants in a larval development assay (LDA) and also for toxicity testing on nine distinct human cell lines. Although none of the 54 analogues synthesized were toxic to any of these cell lines, three of them (N-octyl-7-oxabicyclo(2.2.1)heptane-2,3-dicarboximide (B2), N-decyl-7-oxabicyclo(2.2.1)heptane-2,3-dicarboximide (B3) and 4-[(4-methyl)-3-ethyl-2-methyl-5-phenylfuran-10-oxa-4-azatricyclo[5.2.1]decane-3,5-dione (B21) reproducibly displayed 99-100% lethality to H. contortus in LDA, with LD(50s) of 25-40 ?M. The high 'hit rate' (5.6%) indicates that the approach taken here has advantages over conventional drug screening methods. A major advantage of norcantharidin analogues over some other currently available anthelmintics is that they can be produced in one to two steps in large amounts at low cost and high purity, and do not require any additional steps for the isolation of the active isomer. This positions them well for commercial development.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1464-3405
pubmed:author
pubmed:copyrightInfo
Copyright © 2011 Elsevier Ltd. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
1
pubmed:volume
21
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3277-81
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Norcantharidin analogues with nematocidal activity in Haemonchus contortus.
pubmed:affiliation
Department of Veterinary Science, The University of Melbourne, Parkville, Vic. 3052, Australia.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't