IgA Nephropathy: When the Immune System Attacks the Kidneys by Dr. Ravishankar Polisetty

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What Is IgA Nephropathy?

IgA nephropathy occurs when the immune system produces abnormal immunoglobulin A (IgA) antibodies.

These antibodies circulate in the bloodstream and eventually deposit within the kidneys, particularly in the glomeruli, the microscopic filtration units responsible for cleansing blood.

When these immune complexes accumulate in the glomeruli, they trigger inflammatory reactions within kidney tissues.

Over time this inflammation damages the delicate filtration structures of the kidneys, gradually reducing their ability to remove waste products and maintain fluid balance.

The resulting condition is known as glomerulonephritisa form of kidney inflammation.

However, the disease does not behave the same way in every patient. Some individuals experience only mild symptoms such as intermittent blood in urine, while others develop protein leakage, hypertension, and progressive kidney dysfunction.

Understanding this variability requires examining the broader biological systems that regulate immune responses.

Symptoms and Progression

Many individuals with IgA nephropathy initially experience minimal symptoms.

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