2008
DOI: 10.1007/s12031-008-9039-9
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Ethanol-induced Changes in Proenkephalin mRNA Expression in the Rat Nigrostriatal Pathway

Abstract: Endogenous opioid systems have been suggested to play a key role in ethanol reinforcement mechanisms and alcohol-drinking behavior. Ethanol induces differential alterations in opioid peptide expression in brain areas of the reward circuits, which may be linked to the reinforcing effects of ethanol. In addition, ethanol-induced alterations in opioidergic nigrostriatal transmission could be involved in brain sensitivity to ethanol and play a role in addictive processes. The aim of this work was to study the effe… Show more

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Cited by 16 publications
(7 citation statements)
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“…However, DOP-R agonists reportedly have higher analgesic activity in states of disrupted physiological conditions (Kamei et al, 1994. Stressors, morphine, and ethanol administration change the distribution of DOP-R from the cytoplasmic compartment to the plasma membrane and increase DOP-R activity (Commons, 2003;Méndez et al, 2004Méndez et al, , 2008Hack et al, 2005;Méndez and Morales-Mulia, 2006). As it is difficult to directly demonstrate the redistribution of DOP-R using immunohistochemistry due to nonspecific activity of DOP-R antibodies (Scherrer et al, 2009), we measured the ex vivo activity of the DOP-R using […”
Section: Maintained Dop-r-mediated Analgesia With High Ethanol Consummentioning
confidence: 99%
“…However, DOP-R agonists reportedly have higher analgesic activity in states of disrupted physiological conditions (Kamei et al, 1994. Stressors, morphine, and ethanol administration change the distribution of DOP-R from the cytoplasmic compartment to the plasma membrane and increase DOP-R activity (Commons, 2003;Méndez et al, 2004Méndez et al, , 2008Hack et al, 2005;Méndez and Morales-Mulia, 2006). As it is difficult to directly demonstrate the redistribution of DOP-R using immunohistochemistry due to nonspecific activity of DOP-R antibodies (Scherrer et al, 2009), we measured the ex vivo activity of the DOP-R using […”
Section: Maintained Dop-r-mediated Analgesia With High Ethanol Consummentioning
confidence: 99%
“…La administración de una dosis alta de etanol (2.5g/kg) disminuyó la expresión del ARNm de Pro-enk en el ATV y la SN (pars compacta [SNc] y SNr) de ratas Wistar, y la incrementó en la corteza prefrontal. 46,47 De manera interesante, este tratamiento produce un aumento prolongado y sostenido en los niveles del ARNm de Pro-enk en el NAcc, tanto en el core como en el shell, 46 así como en distintas zonas del CP. 47 La administración de etanol también produce aumentos en la expresión de este ARNm en otras áreas cerebrales, como el núcleo paraventricular del hipotálamo, mientras que en otras, como el giro dentado y las regiones CA1, CA2 y CA3 del hipocampo, el etanol induce efectos bifásicos.…”
Section: Efectos Agudos Y Crónicos Del Etanol Sobre Los Sistemas Enceunclassified
“…46,47 De manera interesante, este tratamiento produce un aumento prolongado y sostenido en los niveles del ARNm de Pro-enk en el NAcc, tanto en el core como en el shell, 46 así como en distintas zonas del CP. 47 La administración de etanol también produce aumentos en la expresión de este ARNm en otras áreas cerebrales, como el núcleo paraventricular del hipotálamo, mientras que en otras, como el giro dentado y las regiones CA1, CA2 y CA3 del hipocampo, el etanol induce efectos bifásicos. 48 Por otra parte, la administración de una dosis de etanol de 2.5g/kg disminuyó el contenido de Met-enk en el NAcc y el CP, pero no tuvo efecto en la corteza prefrontal.…”
Section: Efectos Agudos Y Crónicos Del Etanol Sobre Los Sistemas Enceunclassified
“…During 7 days, caffeine was given in drinking water (0.5 g/L and 1.0 g/L). The control group was given distilled water (Méndez et al 2008;Ofluoglu et al 2009), and both body weight and food intake were monitored every day. Caffeine consumption, at both doses, significantly reduced body weight over the course of the 7 days ( Figure 1A).…”
Section: Effects Of Caffeine On Body Weight and Food Intakementioning
confidence: 99%