L-カルニチンによるマウスのペンチレンテトラゾール誘発けいれんおよび脳内c-fos発現の抑制

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  • Suppression of Pentylenetetrazol-Induced Seizures and c-fos Expression in Mouse Brain by L-Carnitine
  • Suppression of Pentylenetetrazol‐Induced Seizures and c‐<i>fos</i>Expression in Mouse Brain by<scp>L</scp>‐Carnitine

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Suppression of PentylenetetrazolInduced Seizures and c-fos Expression in Mouse Brain by L-Carnitine: Yoshihisa IRYO, et al. Department of Environmental Toxicology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health—Seizure development in ddY mice was recorded on a videotape for 20 min after injection of pentylenetetrazol (PTZ) (50 mg/kg) and analyzed in detail. In addition, expression of the c-fos gene in the brain was semi-quantified by reverse transcription-polymerase chain reaction analysis. When saline, L-carnitine (10 mmol/kg), or Dcarnitine (10 mmol/kg) was administered 30 min prior to PTZ, the seizures were suppressed in mice given Lcarnitine; the seizure scores were significantly lower in mice treated with L-carnitine at several time points, and the overall seizure scores were 31.43 ± 2.49, 10.57 ± 2.86 and 24.71 ± 3.05 (expressed as the mean ± S.E.M., n=7), in saline, L-carnitine and D-carnitine groups, respectively. The latency to the first clonictonic seizure was also prolonged in mice treated with L-carnitine. The level of c-fos mRNA in the brain was lower in the animals treated with L-carnitine than in those treated with saline or D-carnitine. Thus, Lcarnitine shows not only anticonvulsive effects in one of the most widely used animal models of chemically induced seizures but also the potential to suppress the seizure-associated expression of an immediate early gene in the brain.

収録刊行物

  • 産業衛生学雑誌

    産業衛生学雑誌 42 (3), A25-, 2000

    公益社団法人 日本産業衛生学会

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