The effect of opioids and of naloxone on Na+,K+-adenosine triphosphatase activity in frog spinal cord membrane fractions
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Cited by (18)
Evaluation of endomorphin-1 on the activity of Na<sup>+</sup>,K<sup>+</sup>-ATPase using in vitro and in vivo studies
2003, European Journal of PharmacologyCitation Excerpt :Under the same experimental conditions we have shown that morphine produce a similar enhancement of mouse synaptosomal Na+,K+-ATPase activity, which is mediated by activation of μ-opioid receptors and Gi/o proteins (Masocha et al., in press). Previously other authors have also found an activation of brain and spinal cord Na+,K+-ATPase by morphine both in vitro (Jain et al., 1974; Hajek et al., 1985; Nishikawa et al., 1990) and in vivo (Desaiah and Ho, 1977; Sharma et al., 1998), and an antagonism by naloxone of this morphine effect (Desaiah et al., 1977; Nishikawa et al., 1990; Sharma et al., 1998). However, there are also studies that reported a lack of effect of morphine on Na+,K+-ATPase (Desaiah and Ho, 1977; Desaiah and Ho, 1979; Maeda et al., 1987).
Mechanisms involved in morphine-induced activation of synaptosomal Na<sup>+</sup>,K<sup>+</sup>-ATPase
2002, Brain ResearchCitation Excerpt :Incubation in vitro of synaptosomes with morphine and buprenorphine concentration-dependently increased Na+,K+-ATPase activity. The results obtained with morphine agree with those of previous studies that also reported stimulation of Na+,K+-ATPase activity in isolated frog spinal cord [14] and rat brain cortex synaptosomes [27]. Furthermore, the in vivo administration of morphine also enhanced Na+,K+-ATPase activity in several brain areas [8,39].
Na<sup>+</sup>,K<sup>+</sup>-ATPase activity in young chicks after taste stimulation
1994, Brain Research Bulletin
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