The Journal of Bone and Joint Surgery, Vol 68, Issue 1 55-64, Copyright © 1986 by Journal of Bone and Joint Surgery, Inc
Isolation and characterization of high-buoyant-density proteoglycans from semilunar menisci
ME Adams, CA McDevitt, A Ho and H Muir
Proteoglycans were extracted from adult canine menisci in high yield and
were purified, and the major species were characterized biochemically. Most
proteoglycans in menisci were isolated in the high-buoyant-density
fraction. By agarose-acrylamide composite gel electrophoresis, two
proteoglycans were seen in this fraction. Although they were smaller than
those from porcine laryngeal hyaline cartilage and had shorter chondroitin
sulphate and keratan sulphate chains and a lower carbohydrate-to-protein
ratio, they were functionally similar to those in hyaline cartilage in
their specific interaction with hyaluronate.