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Immune complexes (black) are deposited in a thickened basement membrane creating a "spike and dome" appearance on electron microscopy. MGN is caused by immune complex formation in the glomerulus. The immune complexes are formed by binding of antibodies to antigens in the glomerular basement membrane. The antigens may be part of the basement ...
Membranoproliferative glomerulonephritis (MPGN) is a type of glomerulonephritis caused by deposits in the kidney glomerular mesangium and basement membrane thickening, [2] activating the complement system and damaging the glomeruli. MPGN accounts for approximately 4% of primary renal causes of nephrotic syndrome in children and 7% in adults. [3]
Diabetic glomerulosclerosis is a thickening of the basement membrane, which can become up to 4-5 times thicker than normal. Can be caused by insulin deficiency or resultant hyperglycemia. Alport syndrome is a X-linked hereditary nephritis caused by mutations in type IV collagen, leading to a split lamina densa of the glomerular basement ...
Thin basement membrane disease is an autosomal dominant inherited disease characterized by thin glomerular basement membranes on electron microscopy. It is a benign condition that causes persistent microscopic hematuria. This also may cause proteinuria which is usually mild and overall prognosis is excellent.
"Onion-skin" renal arteriole. This is a type of arteriolosclerosis involving a narrowed lumen. [4] The term "onion-skin" is sometimes used to describe this form of blood vessel [14] with thickened concentric smooth muscle cell layer and thickened, duplicated basement membrane.
Most glomerulonephritis' classification and prognosis are aided by histological evaluation by renal biopsy. [3] The renal biopsy is classically evaluated with light microscopy, electron microscopy, and immunohistology to diagnose a histological pattern, which is then compared to clinical evaluation through history, physical, and laboratory evaluation. [3]
Goodpasture syndrome - This is a rare autoimmune disease where autoantibodies are produced that target the glomerular basement membrane in both the lungs and the kidneys. The damage to the basement membrane causes bleeding, and the disease often presents in patients as hematuria and haemoptysis (coughing up blood).
Their deposition occurs in the sub-epithelial spaces. This causes proteinuria by damaging the basement membrane and creating a loss of negative charge. These are anionic deposits that fail to cross the membrane. [4] Cationic deposits that cross the membrane are then deposited into sub-epithelial spaces. Then the disease advances and crescents ...