A neomorphic syntaxin mutation blocks volatile-anesthetic action in Caenorhabditis elegans

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A neomorphic syntaxin mutation blocks volatile-anesthetic action in Caenorhabditis elegans.

The molecular mechanisms underlying general anesthesia are unknown. For volatile general anesthetics (VAs), indirect evidence for both lipid and protein targets has been found. However, no in vivo data have implicated clearly any particular lipid or protein in the control of sensitivity to clinical concentrations of VAs. Genetics provides one approach toward identifying these mechanisms, but ge...

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A Caenorhabditis elegans pheromone antagonizes volatile anesthetic action through a go-coupled pathway.

Volatile anesthetics (VAs) disrupt nervous system function by an ill-defined mechanism with no known specific antagonists. During the course of characterizing the response of the nematode C. elegans to VAs, we discovered that a C. elegans pheromone antagonizes the VA halothane. Acute exposure to pheromone rendered wild-type C. elegans resistant to clinical concentrations of halothane, increasin...

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Volatile anesthetic preconditioning present in the invertebrate Caenorhabditis elegans.

BACKGROUND Volatile anesthetics (VAs) have been found to induce a delayed protective response called preconditioning to subsequent hypoxic/ischemic injury. VA preconditioning has been primarily studied in canine and rodent heart. A more genetically tractable model of VA preconditioning would be extremely useful. Here, the authors report the development of the nematode Caenorhabditis elegans as ...

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Multiple sites of action of volatile anesthetics in Caenorhabditis elegans.

The mechanism and site(s) of action of volatile anesthetics are unknown. In all organisms studied, volatile anesthetics adhere to the Meyer-Overton relationship--that is, a ln-ln plot of the oil-gas partition coefficients versus the potencies yields a straight line with a slope of -1. This relationship has led to two conclusions about the site of action of volatile anesthetics. (i) It has prope...

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Molecular genetic analysis of volatile-anesthetic action.

The mechanism(s) and site(s) of action of volatile inhaled anesthetics are unknown in spite of the clinical use of these agents for more than 150 years. In the present study, the model eukaryote Saccharomyces cerevisiae was used to investigate the action of anesthetic agents because of its powerful molecular genetics. It was found that growth of yeast cells is inhibited by the five common volat...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 1999

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.96.5.2479