%0 Journal Article %T Receptores opioides at¨¦ o contexto atual %A Martins %A Rodrigo Tomazini %A Almeida %A Daniel Benzecry de %A Monteiro %A Felipe Marques do Rego %A Kowacs %A Pedro Andr¨¦ %A Ramina %A Ricardo %J Revista Dor %D 2012 %I Scientific Electronic Library Online %R 10.1590/S1806-00132012000100014 %X background and objectives: due to the objective of the outpatient setting and to routinely used drugs, this study aimed at reviewing and updating the knowledge about opioid receptors and worked as a study complement after a lecture presented to team members. contents: we have reviewed from historical aspects to most recent developments about opioid receptors, in addition to describing subtypes and action mechanisms. for such, pubmed-indexed references were queried. conclusion: after reviewing current literature data, we have concluded that there is still a lot to be researched about the topic, aiming at safer drugs, and new biomolecular techniques are still needed. %K history of medicine %K morphine %K morphine receptors %K opioid antagonists %K opioid receptors %K opioids %K opium %K poppy. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1806-00132012000100014&lng=en&nrm=iso&tlng=en