Nitric oxide modulates the hyperalgesic response to mechanical noxious stimuli in sleep-deprived rats

Sleep restriction alters pain perception in animals and humans, and many studies have indicated that paradoxical sleep deprivation (PSD) promotes hyperalgesia. The hyperalgesia observed after mechanical nociceptive stimulus is reversed through nitric oxide synthase (NOS) inhibition. Both nitric oxid...

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Veröffentlicht in:BMC neuroscience 2013-08, Vol.14 (1), p.92-92, Article 92
Hauptverfasser: Damasceno, Fabio, Skinner, Gabriela O, Araújo, Paulo C, Ferraz, Marcia M D, Tenório, Frank, de Almeida, Olga M M S
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container_issue 1
container_start_page 92
container_title BMC neuroscience
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creator Damasceno, Fabio
Skinner, Gabriela O
Araújo, Paulo C
Ferraz, Marcia M D
Tenório, Frank
de Almeida, Olga M M S
description Sleep restriction alters pain perception in animals and humans, and many studies have indicated that paradoxical sleep deprivation (PSD) promotes hyperalgesia. The hyperalgesia observed after mechanical nociceptive stimulus is reversed through nitric oxide synthase (NOS) inhibition. Both nitric oxide (NO) and the dorsolateral periaqueductal gray matter (dlPAG) area of the brainstem are involved in hyperalgesia. Thus, in this work, we investigated the pain-related behavior response after mechanical noxious stimuli (electronic von Frey test), and the activity of nicotinamide adenine dinucleotide phosphate diaphorase (NADPH-d), an indicator of NOS activity, within the dlPAG of paradoxical sleep-deprived rats. We also evaluated the effects of pre-treatment with L-NAME on these parameters. These data revealed that PSD reduced the hindpaw withdrawal threshold (-47%, p 
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L-NAME treatment prevented the reduction in the hindpaw withdrawal threshold (+ 93%, p &lt; 0.0001) and the increase in the NADPH-d positive cells number in the dlPAG of PSD-treated rats (-36%, p &lt; 0.0001). 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subjects Animals
Health aspects
Hyperalgesia - metabolism
Kinases
Male
Nitric oxide
Nitric Oxide - metabolism
Pain
Periaqueductal Gray - metabolism
Physical Stimulation
Rats
Rats, Wistar
Rodents
Sleep deprivation
Sleep Deprivation - metabolism
title Nitric oxide modulates the hyperalgesic response to mechanical noxious stimuli in sleep-deprived rats
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