Alcohol-induced potentiation of the neurally evoked contractions of the retractor unguis muscle of the locust, Schistocerca gregaria |
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Authors: | T J McDonald R D Farley R B March |
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Institution: | 1. Department of Entomology, University of California, Riverside, California 92502, U.S.A.;2. Department of Biology, University of California, Riverside, California 92502, U.S.A. |
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Abstract: | Each of a series of seven monohydroxyl alcohols caused an increase in the force of the neurally evoked contractions of the innervated retractor unguis muscle isolated from the metathoracic femurs of the locust, Schistocerca gregaria. The negative logarithm of equipotent concentrations of the alcohols was proportional to the logarithm of the partition coefficient (1-octanol/water) of the alcohols: , where C is concentration, and P is the partition coefficient.Ethylene glycol and glycerol did not potentiate the contractions, possibly due to their very low lipophilic character. Acetone (10?2 M) and benzene (10?5 M) also potentiated the neurally evoked contractions of the insect muscle. |
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