Chemosensory Information Processing by Stephan Frings, Bernd Lindemann (auth.), Detlev Schild

By Stephan Frings, Bernd Lindemann (auth.), Detlev Schild (eds.)

In July 1989 a symposium was once held on the body structure division of the Georg August collage, G6ttingen, at the physiological, biophysical, biochemical, and technical rules of the coding of chemical compounds either in frightened platforms and synthetic units. This publication is the gathering of the papers offered at that assembly. organic and synthetic platforms for scent coding either have in universal that the stimulus selectivity of the receptor cells (sensors) is generally very bad, and the mechanisms which ensure selectivity and sensitivity are mostly unknown. although, a terrible selectivity permits the coding of a huge variety of stimuli by way of combos of receptor actions. within the box of chemosensory info coding there are hence significant difficulties: the functionality of the receptors and the community that procedures and evaluates the first details of the sensors. consequently, this quantity has 3 components: sensors, the community following the sensors, and the coding during this community. The specialist secretarial information of M. Holtmann in getting ready the camera-ready manuscript is gratefully stated. D. Schild G6ttingen, August 1989 CONTENTS l. reaction of olfactory receptor cells, remoted and in situ, to low concentrations of odorants 1 Stephan Frings, Bernd Lindemann 2. Excitation and edition of frog olfactory receptor neurones upon stimulation with moment messengers and ordinary odorants nine D. Schild, J. A. DeSimone, S. Hellwig three. Receptor selectivity and dimensionality of odours on the level of the olfactory receptor cells 21 GiJJes Sicard 4.

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Y. 184-192. Dravnieks A, Laffort P (1972) Physico-chemical basis of quantitative and qualitative odor discrimination in humans. In Schneider D (ed), Olfaction and Taste 4, Wissens-Verlag-MBH, Stuttgart, 142-148. Dreesen TD, Koch RB (1982) Odorous chemical perturbations of (Na+ + K+) dependent ATPase activities. Biochem J, 203:69-75. Duchamp A, Revial MF, Holley A, Mac Leod P (1974) Odor discrimination by frog olfactory receptors. Chern Senses 1:213-233. Duchamp-Viret P, Duchamp A, Vigouroux M (1989) Amplifying role of convergence in olfactory system: comparison of receptor cell and second order neuron sensitivities.

Menevse et a1. (1977) further implicated a role for cAMP in olfaction by showing epithelial depletion of phosphodiesterase (PDE) activity following bulbectomy and subsequent neuron death in the epithelium. PDE resets a cyclase pathway by degrading the cAMP messenger to inactive AMP. , 1986a) developed a preparation of isolated olfactory cilia from frogs. Pace et a1. (1985) demonstrated cyclase activity in this preparation by measuring produced cAMP in response to several pathway activators, including GTP-gamma-S, a non-hydrolizable analog of GTP which binds to and activates G-protein (see below).

Fesenko EE, Novoselov VI, Nuvikov, JV (1985) Molecular mechanisms of olfactory reception. VI Kinetic characteristics of camphor interaction with binding sites of rat olfactory epithelium. Biochem Biophys Acta 839:268-275. Fesenko EE, Novoselov VI, Bystrova MF (1987) The subunits of specific odor-binding glycoproteins from rat olfactory epithelium. FEB, 219:224-226 Fesenko EE, Novoselov VI, Bystrova MF (1988) Properties of odour-binding glycoproteins from rat olfactory epithelium. Biochem. Biophys.

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