title: 2,4,5,2',4',5'-Hexachlorobiphenyl-lipoprotein (LDL, HDL, VLDL) interaction and induced lipidosis in cultured skin fibroblasts.
abstract: 2,4,5,2',4',5'-Hexachlorobiphenyl (HCB) induced cytoplasmic inclusions and lipidosis in normal ( AG1437 ) and hypercholesterolemic ( GM488 ) human skin fibroblasts. Quantitative and qualitative microsocopic fluorescence analysis showed that the cytoplasmic inclusions are formed as early as 3 hr after treatment with HCB. The inclusions contain lipids but no detectable nonesterified cholesterol or cholesteryl ester. High density lipoproteins (HDL), low density lipoproteins (LDL), and very low density lipoproteins (VLDL) facilitate the apparent uptake of HCB by skin fibroblasts. HDL and LDL appeared to reverse the induction of cytoplasmic inclusions and lipidosis when cells were pretreated with HCB, the HCB was removed from media, and the cells were incubated with LDL or HDL. The results suggest that lipoproteins participate in the uptake and egress of HCB from skin fibroblasts.
mesh_terms: D002478:Cells, Cultured; D005347:Fibroblasts / Q000187:drug effects / Q000378:metabolism / Q000648:ultrastructure; D006801:Humans; D002479:Inclusion Bodies / Q000187:drug effects; D008064:Lipidoses / Q000139:chemically induced*; D008074:Lipoproteins / Q000494:pharmacology*; D008075:Lipoproteins, HDL / Q000378:metabolism; D008077:Lipoproteins, LDL / Q000378:metabolism; D008079:Lipoproteins, VLDL / Q000378:metabolism; D011078:Polychlorinated Biphenyls / Q000378:metabolism / Q000633:toxicity*; D012867:Skin / Q000378:metabolism
chemical_list: D008074:Lipoproteins; D008075:Lipoproteins, HDL; D008077:Lipoproteins, LDL; D008079:Lipoproteins, VLDL; D011078:Polychlorinated Biphenyls; C014024:2,4,5,2',4',5'-hexachlorobiphenyl