Methods and compositions for reducing the development of...

A - Human Necessities – 61 – K

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A61K 31/485 (2006.01) A61K 31/135 (2006.01) A61K 31/44 (2006.01) A61K 31/445 (2006.01) A61K 45/06 (2006.01) A61P 25/30 (2006.01) G01N 33/567 (2006.01)

Patent

CA 2476565

The present invention provides methods for reducing, preventing or delaying the development of tolerance to certain drugs that target G-protein coupled receptors (GPCR). The methods are generally carried out by co-administering with the drug an agonist for the drug-target GPCR that promotes the endocytosis of the targetted receptor. The methods are particularly useful for drugs that target the opioid receptors, for example morphine. The present invention also provides compositions comprising a drug and an agonist that are advantageous in preventing the development of tolerance to the drug that can develop when the drug is administered alone.

L'invention concerne des procédés destinés à réduire, à prévenir ou à retarder le développement de tolérance à certains médicaments qui ciblent les récepteurs couplés à la protéine G (GPCR). Ces procédés sont, en général, mis en oeuvre par co-administration avec le médicament d'un agoniste du GPCR cible du médicament qui favorise l'endocytose du récepteur ciblé. Ils sont particulièrement utiles pour des médicaments qui ciblent les récepteurs opioïdes, par exemple la morphine. Cette invention concerne également des compositions comprenant un médicament et un agoniste qui permettent de prévenir de façon avantageuse le développement de tolérance au médicament que peut développer un médicament lorsqu'il est administré seul.

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