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Nitric Oxide Production Pathway (NO Pathway)
- Target
- NO Pathway
- Molecular classification
- Enzymatic Pathway
01
Overview
The nitric oxide (NO) production pathway refers to the biological processes by which nitric oxide, a gaseous signaling molecule, is synthesized and regulated in living organisms. Key enzymes are nitric oxide synthases (NOS), which catalyze the conversion of L-arginine to L-citrulline with the release of NO. Regulation occurs at multiple levels including enzyme expression, calcium/calmodulin binding, and competition for substrates. Dysregulation contributes to pathologies such as hypertension, septic shock, stroke, and neurodegeneration.
- Other names
- NO Synthesis PathwayNitric Oxide Synthase Pathway
02
Mechanism of action
Varied depending on target. NOS inhibitors block NO synthesis, NO donors increase NO levels.
03
Biological functions
VasodilationNeurotransmissionImmune responseCellular signalingRegulation of vascular tone
04
Disease associations
HypertensionSeptic shockStrokeNeurodegenerative diseaseCardiovascular disease
05
Safety considerations
Excessive vasodilation leading to hypotensionPotential for NO to react with superoxide to form peroxynitrite (oxidative stress)Unintended consequences of inhibiting specific NOS isoforms
06
Interacting drugs
L-arginine analogues (NOS inhibitors)
2 more in the full profile.
07
Biomarkers
Nitric oxide levelsCitrulline levelsNOS expression levels
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