@article{citeulike:503589, title = {Apolipoprotein[a] is not associated with apolipoprotein B in human liver.}, address = {Department of Molecular Biology and Biotechnology, University of Sheffield, England.}, author = {J. Wilkinson and L. H. Munro and J. A. Higgins}, journal = {J Lipid Res}, month = {October}, number = {10}, pages = {1896--1901}, url = {http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve\&db=pubmed\&dopt=Abstract\&list_uids=7852867}, volume = {35}, year = {1994}, biburl = {http://www.bibsonomy.org/bibtex/26fc069fa0fbbc5d99cdd8ffec6d8fcc0/biblio24}, abstract = {The aim of this research was to determine whether apolipoprotein[a] (apo[a]) is linked to apolipoprotein B (apoB) in human liver. Four ELISAs were developed: 1) a competition assay that measures apoB; 2) a competition assay that measures apo[a]; 3) a capture assay based on capture of apo[a] by a polyclonal antibody and detection of co-immobilized apoB using a monoclonal antibody; and 4) a capture assay based on capture of apo[a] using a polyclonal antibody and detection of immobilized apo[a] using a monoclonal antibody. Assays 2 and 4, therefore, measure apo[a] either free or in complex with other proteins, while assay 3 measures apo[a] associated with apoB. The levels of apo[a] ranged from 25 to 440 micrograms/g liver in nine individual liver samples. There was no significant difference between apo[a] levels in individual human liver samples measured using ELISA 1 or 3; however, it was not possible to detect apo[a]/apoB using assay 3. ApoB was present in human liver homogenates at levels ranging from 90 to 700 micrograms/g measured using assay 1. These results suggest, therefore, that apo[a] is not coupled to apoB in the liver and may be secreted in the free form to bind with low density lipoprotein (LDL) in the extracellular fluid or plasma.}, issn = {0022-2275}, citeulike-article-id = {503589}, priority = {2}, keywords = {apob elisa } }