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J Neurol Sci ; 347(1-2): 82-9, 2014 Dec 15.
Artículo en Inglés | MEDLINE | ID: mdl-25282545

RESUMEN

Transcutaneous electrical nerve stimulation (TENS) is a non-pharmacological therapy for the treatment of pain. The present work investigated the effect of cannabidiol, naloxone and diazepam in combination with 10 Hz and 150 Hz TENS. Male Wistar rats were submitted to the tail-flick test (baseline), and each rodent received an acute administration (intraperitoneal) of naloxone (3.0mg/kg), diazepam (1.5mg/kg) or cannabidiol (0.75 mg/kg, 1.5mg/kg, 3.0mg/kg, 4.5mg/kg, 6.0mg/kg and 12.0mg/kg); 10 min after the acute administration, 10 Hz or 150 Hz TENS or a sham procedure was performed for 30 min. Subsequently, tail-flick measures were recorded over a 90-min period, at 5-min intervals. 10 Hz TENS increased the nociceptive threshold during the 90-min period. This antinociceptive effect was reversed by naloxone pre-treatment, was not altered by diazepam pre-treatment and was abolished by cannabidiol pre-treatment (1.5mg/kg). Moreover, 150 Hz TENS increased tail-flick latencies by 35 min post-treatment, which was partially inhibited by naloxone pre-treatment and totally inhibited by cannabidiol (1.5mg/kg). These data suggest the involvement of the endogenous opioid system and the cannabinoid-mediated neuromodulation of the antinociception induced by transcutaneous electrostimulation at 10 Hz and 150 Hz TENS.


Asunto(s)
Cannabidiol/metabolismo , Dolor Nociceptivo/metabolismo , Dolor Nociceptivo/terapia , Péptidos Opioides/metabolismo , Sistema Nervioso Periférico/fisiología , Estimulación Eléctrica Transcutánea del Nervio , Animales , Cannabidiol/farmacología , Diazepam/farmacología , Hipnóticos y Sedantes/farmacología , Masculino , Naloxona/farmacología , Antagonistas de Narcóticos/farmacología , Péptidos Opioides/efectos de los fármacos , Dimensión del Dolor , Sistema Nervioso Periférico/efectos de los fármacos , Ratas , Ratas Wistar , Estimulación Eléctrica Transcutánea del Nervio/métodos
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