- The betaA4 amyloid peptide complexes to and enhances the uptake of beta-very low density lipoproteins by the low density lipoprotein receptor-related protein and heparan sulfate proteoglycans pathway. Scharnagl, H., Tisljar, U., Winkler, K., Hüttinger, M., Nauck, M.A., Gross, W., Wieland, H., Ohm, T.G., März, W. Lab. Invest. (1999)