Proteoglycan present in the glomerular basement membrane is?

Proteoglycan present in the glomerular basement membrane is?

   A. Keratan sulphate 1 

   B. Keratan sulphate 2 

   C. Heparan sulphate 

   D. Chondroitin sulphate

ANSWER= C. Heparan sulphate

Explain:- The glomerular membrane (or the filtration barrier) is the filtration surface through which the fluid is filtered out from the blood. The glomerular membrane (filtration barrier) comprises: 1. The glomerular capillary endothelium. 2. The basement membrane (basal lamina). 3. The Bowman’s visceral epithelium (podocytes). Important constituents of glomerular membrane include, - Laminin - Type 4 collagen - Nidogen - Proteoglycans - (Heparan sulphate)