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Latest publication 01/03/2012

Clavulanic acid does not affect convulsions in acute seizure tests in mice-

Clavulanic acid (CLAV) inhibits bacterial _-lactamases and is commonly used to aid antibiotic therapy. Prompted by the initial evidence suggestive...

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    [title] => Clavulanic acid does not affect convulsions in acute seizure tests in mice-
    [paragraph] => Clavulanic acid does not affect convulsions in acute seizure tests in mice.
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Authors
M. Gasior, K. Soca_a, D. Nieoczym, P. Wla_. 

 Lab
Clinical Research, Cephalon, Inc., Frazer, USA.
Journal
Journal of Neural Transmission
Abstract
Clavulanic acid (CLAV) inhibits bacterial _-lactamases and is commonly used to aid antibiotic therapy. Prompted by the initial evidence suggestive of the potential anticonvulsant and neuroprotective properties of CLAV, the present study was undertaken to systematically evaluate its acute effects on seizure thresholds in seizure tests typically used in primary screening of potential antiepileptic drugs (AEDs). In the present study, 6-Hz seizure threshold, maximal electroshock seizure threshold (MEST) test, and intravenous pentylenetetrazole (i.v. PTZ) seizure tests were used to determine anticonvulsant effects of intraperitoneally (i.p.) administered CLAV in mice. Acute effects on motor coordination and muscle strength were assessed in the chimney and grip-strength tests, respectively. Doses of CLAV studied in the present study were either comparable or extended the doses reported in the literature to be effective against kainic acid-induced convulsions in mice or behaviorally active in rodents and monkeys. CLAV had no effect on seizure thresholds in the 6-Hz (64 ng/kg to 1 mg/kg) and MEST (64 ng/kg to 5 mg/kg) seizure tests. Similarly, CLAV had no effect on seizure thresholds for i.v. PTZ-induced myoclonic twitch, clonic convulsions, and tonic convulsions (64 ng/kg to 5 mg/kg). Finally, CLAV (64 ng/kg to 5 mg/kg) had no effect on the motor performance and muscle strength in the chimney and grip-strength tests, respectively. In summary, CLAV failed to affect seizure thresholds in three seizure tests in mice. Although the results of the present study do not support further development of CLAV as an AED, its beneficial effects in chronic epilepsy models warrant further evaluation owing to its, for example, potential neuroprotective properties.
BIOSEB Instruments Used
Grip strength test (BIO-GS3)
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An easy way to objectively quantify the muscular strength of mice and rats, and to assess the effect of drugs, toxins, muscular (i.e. myopathy) and neurodegenerative diseases on muscular degeneration. It is widely used in conjunction with the ROTAROD motor coordination test: a normally coordinated rodent will show a decreased latency to fall off the rotating rod if its muscular strength is low. The Grip Strength Test is a must for your research on activity, motor control & coordination, and is particularly well suited for studies on Parkinson's & Huntington's disease.
New features GS4 - 2023: Color display with permanent backlight screen for easier reading, reset by footswitch, Improved battery time, Larger data memory of 500 values, Animal counter, USB port (charging/data transfer)

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