About: Morphine Sulfate Sustained-Release Tablet     Goto   Sponge   NotDistinct   Permalink

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AttributesValues
rdf:type
rdfs:label
  • Morphine Sulfate Sustained-Release Tablet
rdfs:subClassOf
Semantic_Type
  • Pharmacologic Substance
Preferred_Name
  • Morphine Sulfate Sustained-Release Tablet
NCI_META_CUI
  • CL412993
PDQ_Open_Trial_Search_ID
  • 651246
PDQ_Closed_Trial_Search_ID
  • 651246
FULL_SYN
  • Morphine Sulfate Sustained-Release TabletPTNCI
DEFINITION
  • A sustained-release tablet formulation containing the sulfate salt of the opiate alkaloid morphine with analgesic activity. Morphine binds to and activates the mu-opioid receptors in the central nervous system (CNS), thereby mimicking the effects of the endogenous opioids. Binding of morphine to opioid receptors stimulates exchange of GTP for GDP, inhibits adenylate cyclase, and decreases intracellular cAMP. This inhibits the release of various nociceptive neurotransmitters, such as substance P, gamma-aminobutyric acid (GABA), dopamine, acetylcholine, noradrenaline, vasopressin, and somatostatin. In addition, morphine closes N-type voltage-gated calcium channels and opens calcium-dependent inwardly rectifying potassium channels, which results in hyperpolarization of neuronal membranes and a reduction in neuronal excitability, and subsequently, analgesia and sedation.NCI
code
  • C84853
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