NSAIDS and Cannabis Flashcards
response of vascularized tissues to infections and damaged tissues that brings cells and molecules of host defense from the circulation to the sites where they are needed, in order to eliminate the offending agent = what
inflammation
the inflammatory mediators prostaglandins and leukotrienes are metabolites of what
arachidonic acid
NSAID drugs act on ____ enzymes
cyclooxyrgenase enzymes COX1 and COX2
what are constitutive vs inducible CLOX
constitutive = expressed at relatively constant level sin most tissues
inducible = induced by inflammatory stimuli
of COX1 and COX2, which is constitutive and has homeostatic functions, important in gastric mucosa, kidney, platelets, vascular endothelium? which is primarily induced by inflammatory cytokines and is produces prostanoids associated with inflammation, fever, and pain?
COX1 (constitutive), COX2 (inducible)
a non-selective COX inhibitor will inhibit ___, while a selective COX inhibitor to target pain, fever, inflammation would inhibit ____
both COX1 and COX2; COX2 (and a little bit of COX-1 effects also, not perfect)
give 6 clinical uses of NSAIDs
anti-inflammatory, analgesic, antipyretic, treatment septic shock, antithrombotic, anti-cancer in certain cases
COX inhibition reduces the ____ and _____ effects of prostaglandins
central and peripheral
Chronic nociceptor stimulation (as occurs with inflammation) results in changes at the level of the synapse within the spinal cord. Upregulation of ________ and __________ leads to sensitization of post-synaptic neurons = increased perception of pain
post-synaptic receptors and spinal cord COX-2 lead
septic shock occurs when
bacterial products, which can be LPS endotoxin or others, enter systemic circulation
septic shock leukocyte, complement, and endothelial cell activation lead to what 4 effects? what overall effect
immunosuppression; vasodilation (increased vascular permeability and decreased perfusion); systemic effects of fever, decreased ionotropy and metabolic abnormality; and microvascular thrombosis. multi-organ failure!
what should you consider about giving patients with poor perfusion (eg. in septic shock) NSAIDs.
benefits may not outweigh the risk
is a horse that is hemorrhaging a good candidate for NSAIDs? why?
no! both non-selective and selective COX-2 NSAIDs have some COX-1 inhibition. COX-1 is involved in platelet activation and aggregation, so going to increase bleeding.thin the blood
COX-2 is ________ in some tumours, therefore NSAIDs will have what effect in certain tumors
upregulated; suppress certain tumors
PK of NSAIDs: how is it bound? absorbed? metabolized? half-life?
highly protein bound, well-absorbed orally, metabolized liver, half-lief varies dramatically between species