X-Nico

unusual facts about basement membrane



Lupus band test

The skin is from a person with systemic lupus erythematosus and shows IgG deposits at two different places: The first is a bandlike deposit along the epidermal basement membrane ("lupus band test" is positive); the second is within the nuclei of the epidermal cells (antinuclear antibodies are present).


see also

Anti-glomerular basement membrane antibody

Anti-glomerular basement membrane antibody (anti-GBM Ab) is an antibody which is found in Goodpasture's syndrome but not found in microscopic polyangiitis.

COL4A4

Mutations in this gene are associated with type II autosomal recessive Alport syndrome (hereditary glomerulonephropathy) and with familial benign hematuria (thin basement membrane disease).

Dystroglycan

alpha-dystroglycan is extracellular and binds to merosin alpha-2 laminin in the basement membrane, while beta-dystroglycan is a transmembrane protein and binds to dystrophin, which is a large rod-like cytoskeletal protein, absent in Duchenne muscular dystrophy patients.