Genetic polymorphisms affecting urate transporters, such as URAT1 and ABCG2, play a major role in renal handling of uric acid, explaining why some individuals are overproducers while others are underexcretors. This sterile inflammatory response is so potent that it can mimic a bacterial infection, further highlighting the body's recognition of crystals as foreign invaders.
Gout Pathophysiology Diagnosis Therapeutic Implications Guide
The Role of the Innate Immune System Once MSU crystals are deposited in the joint space or synovial lining, they are engulfed by immune cells, primarily neutrophils and macrophages. From Uric Acid to Monosodium Urate Crystals The initial step in gout pathophysiology is the attainment of hyperuricemia, defined as serum urate concentrations above 6.
When this equilibrium is disrupted, either through overproduction or underexcretion of urate, the blood becomes supersaturated. IL-1β is a master mediator of inflammation and is responsible for the characteristic signs of acute gout: intense pain, swelling, redness, and warmth.
Gout Pathophysiology Diagnosis Therapeutic Implications Guide
This condition represents the final clinical manifestation of chronic hyperuricemia, where serum uric acid levels exceed the saturation point for monosodium urate (MSU) crystallization. Activation of the inflammasome leads to the processing and secretion of pro-inflammatory cytokines, most notably interleukin-1β (IL-1β) and interleukin-18 (IL-18).
More About Gout pathophysiology
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