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Minute Impurities Contribute Significantly to Olfactory Receptor Ligand Studies : Tales from Testing the Vibration Theory

Minute Impurities Contribute Significantly to Olfactory Receptor Ligand Studies : Tales from Testing the Vibration Theory

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PAOLI, Marco, Daniel MÜNCH, Albrecht HAASE, Efthimios SKOULAKIS, Luca TURIN, Giovanni GALIZIA, 2017. Minute Impurities Contribute Significantly to Olfactory Receptor Ligand Studies : Tales from Testing the Vibration Theory. In: eNeuro. 4(3), e0070-17.2017. eISSN 2373-2822

@article{Paoli2017-06-20Minut-39423, title={Minute Impurities Contribute Significantly to Olfactory Receptor Ligand Studies : Tales from Testing the Vibration Theory}, year={2017}, doi={10.1523/ENEURO.0070-17.2017}, number={3}, volume={4}, journal={eNeuro}, author={Paoli, Marco and Münch, Daniel and Haase, Albrecht and Skoulakis, Efthimios and Turin, Luca and Galizia, Giovanni}, note={Article Number: e0070-17.2017} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/39423"> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-06-27T09:54:34Z</dcterms:available> <dc:creator>Paoli, Marco</dc:creator> <dcterms:rights rdf:resource="http://nbn-resolving.de/urn:nbn:de:bsz:352-20150914100631302-4485392-8"/> <dc:contributor>Skoulakis, Efthimios</dc:contributor> <dc:creator>Turin, Luca</dc:creator> <dc:contributor>Paoli, Marco</dc:contributor> <dc:creator>Münch, Daniel</dc:creator> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/39423"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-06-27T09:54:34Z</dc:date> <dc:contributor>Galizia, Giovanni</dc:contributor> <dc:contributor>Haase, Albrecht</dc:contributor> <dcterms:abstract xml:lang="eng">Several studies have attempted to test the vibrational hypothesis of odorant receptor activation in behavioral and physiological studies using deuterated compounds as odorants. The results have been mixed. Here, we attempted to test how deuterated compounds activate odorant receptors using calcium imaging of the fruit fly antennal lobe. We found specific activation of one area of the antennal lobe corresponding to inputs from a specific receptor. However, upon more detailed analysis, we discovered that an impurity of 0.0006% ethyl acetate in a chemical sample of benzaldehyde-d5 was entirely responsible for a sizable odorant-evoked response in Drosophila melanogaster olfactory receptor cells expressing dOr42b. Without gas chromatographic purification within the experimental setup, this impurity would have created a difference in the responses of deuterated and nondeuterated benzaldehyde, suggesting that dOr42b be a vibration sensitive receptor, which we show here not to be the case. Our results point to a broad problem in the literature on use of non-GC-pure compounds to test receptor selectivity, and we suggest how the limitations can be overcome in future studies.</dcterms:abstract> <dcterms:title>Minute Impurities Contribute Significantly to Olfactory Receptor Ligand Studies : Tales from Testing the Vibration Theory</dcterms:title> <dcterms:issued>2017-06-20</dcterms:issued> <dc:contributor>Münch, Daniel</dc:contributor> <dc:creator>Haase, Albrecht</dc:creator> <dc:creator>Galizia, Giovanni</dc:creator> <dc:contributor>Turin, Luca</dc:contributor> <dc:creator>Skoulakis, Efthimios</dc:creator> <dc:language>eng</dc:language> </rdf:Description> </rdf:RDF>

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