Tuesday, 1 August 2006

pharmacology - How do Opioids Stimulate a Histamine Release?

Histamine is a neurotransmitter that also has peripheral functions such as the regulation of gastric acid secretions, allergic responses, etc. I know that opioids stimulate a release of histamine but I want to know how?



What exactly I would like answered is:



  • Which of the opioid receptors are involved in the histamine release that opioids stimulate and to what extent are they?


  • How does the activation of the opioid receptors in question lead to a release of histamine?


  • Are there any ways of suppressing the histamine release stimulated by opioids without compromising the analgesia they elicit?


I would like an answer, not just links. However I would like you to cite journal articles, although a formal reference list is not required so long as I can easily find the link to the abstract/full article.

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