TITLE

Identification of new drug classification terms in textual resources

AUTHOR(S)
Corinna Kolárik; Martin Hofmann-Apitius; Marc Zimmermann; Juliane Fluck
PUB. DATE
July 2007
SOURCE
Bioinformatics;Jul2007, Vol. 23 Issue 13, pi264
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Knowledge about biological effects of small molecules helps in the understanding of biological processes and supports the development of new therapeutic agents. DrugBank is a high quality database providing such information about drugs that contains annotation of drug effects and classification of therapeutic effects. However, to broaden the scope of such a database in classifying and annotating drugs, systems for automatic extraction of classification terms and the corresponding annotation of drugs are needed. We have developed an approach for the identification of new terms used in unstructured text that provide information about drug properties. It is based on the identification and extraction of phrases corresponding to lexico-syntactic patterns - so-called Hearst patterns that contain drug names and directly related drug annotation terms. Such phrases could be identified with a high performance in DrugBank text (0.89 F-score) and in Medline abstracts (0.83 F-score). In comparison to DrugBank annotation terminology, a huge amount of new drug annotation terms could be found. The evaluation of terms extracted from Medline showed that 29–53% of them are new valid drug property terms. They could be assigned to existing and new drug property classes not provided by the DrugBank drug annotation. We come to the conclusion that our system can support database content update by providing additionally drug descriptions of pharmacological effects not yet found in databases like DrugBank. Moreover, we propose that automatic normalization of terms improves the annotation and the retrieval of relevant database entries. Contact: corinna.kolarik@scai.fraunhofer.de Supplementary information: Supplementary data are available at Bioinformatics online.
ACCESSION #
26015462

 

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