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Pflugers Arch

Title:		Elementary receptor currents elicited by a single pheromone molecule exhibit quantal composition
Author(s):		Redkozubov A;
Address:		"Institute of Physiologically Active Substances, Russian Academy of Sciences, Moscow District. redkozub@ipac.ac.ru"
Journal Title:		Pflugers Arch
Year:		2000
Volume:		440
Issue:		6
Page Number:		896 - 901
DOI:		10.1007/s004240000345
ISSN/ISBN:		0031-6768 (Print) 0031-6768 (Linking)
Abstract:		"Responses to single pheromone molecules, elementary receptor currents (ERC), recorded from antennal olfactory receptor neurones of the moth Bombyx mori were studied in situ, at the opened sensilla, using the voltage-clamp technique in transepithelial recordings. The amplitude parameters of the ERCs eliciting one action potential in the bombykol and bombykal receptor neurones were analysed. The ERC amplitude varied largely within a range of 0.5-5.5 pA. The amplitude histograms of the ERCs exhibited a series of peaks and shoulders. Quantal analysis of the amplitude distributions based on spectral methods revealed that a quantum event underlies the ERCs. Deconvolution of the ERC amplitude distributions using the distribution of baseline noise indicates that the ERCs exhibit discrete amplitude levels. The weighted average interval between the levels indicates that the quantal size is 0.6-0.7 pA"
Keywords:		Action Potentials Animals *Electric Conductivity Epithelium/physiology Male Membrane Potentials Moths/*physiology Olfactory Receptor Neurons/*physiology Patch-Clamp Techniques Pheromones/*pharmacology;
Notes:		"MedlineRedkozubov, A eng Germany 2000/10/21 Pflugers Arch. 2000 Oct; 440(6):896-901. doi: 10.1007/s004240000345"