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Abstract The opioid system consists of three receptors, mu, delta, and kappa, which are activated by endogenous opioid peptides processed from three protein precursors, proopiomelanocortin ...
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(i.e., the kappa-opioid receptor) play a critical role in regulating the state of the brain reward system by modulating dopamine release in the striatum ( Di Chiara and Imperato, 1988b; Maisonneuve et al ...
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effective in suppressing the hedonic than motivational aspects of reward, further supporting the involvement of the endogenous opioid system in the mediation of hedonic properties of food reward. 1 ...
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The discovery of endogenous opioids has markedly influenced the research on the biology of addiction and reward brain processes. Evidence has been presented that these brain substances modulate brain ...
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Highlights ► The 2010 Motivational Neuronal Networks conference took place on April 24–27. ► Discussions focused on understudied brain regions involved in reward and motivation. ► Topics included ...
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Drug addiction is a chronic brain disorder leading to complex adaptive changes within the brain reward circuits that involve several neurotransmitters. One of the neurochemical systems that plays ...
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. In fact, recent evidence suggests that the release of dopamine in the ventral striatum likely triggers the activation of the endogenous opioid system in placebo analgesia. The placebo-reward hypothesis also ...
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accumbens Introduction A growing body of experimental evidence supports the view that the endogenous opioid system might play a role in the addictive properties of nicotine. Indeed, acute or chronic ...
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in the process of drug-seeking behavior is discussed. 1 IntroductionInvolvement of the opioid system in drug-induced reward and reinforcement has been intensively investigated over the past few ...
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] . The changes in structure and function of the brain's reward circuitry, including the ventral tegmental area (VTA) and the nucleus accumbens (NAc), are involved in the acquisition of CPP [4,5] . For example ...
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