D. Leech et Ga. Rechnitz, NEURONAL-BASED ASSAY AND DETECTION OF LOCAL-ANESTHETICS USING ELECTRICALLY STIMULATED CRAYFISH WALKING LEG NERVES, Analytical letters, 26(7), 1993, pp. 1259-1279
This report demonstrates the use of the nerve bundle from the crayfish
walking leg for the detection and assay of local anesthetics (LAs). D
etection is achieved by monitoring the disappearance of the compound a
ction potential (CAP) upon application of the local anesthetics to the
nerves, pinned in a specially designed flow cell. CAP firing is induc
ed with an electrical current pulse applied to the nerve bundle. Dose-
response curves for the LAs tetracaine, lidocaine and procaine are con
structed and factors which affect the detection are discussed. The app
lication of this procedure to the screening for neurotoxicity and neur
omodulatory activity of new drugs and natural product extracts is prop
osed.