title: Increased responsiveness of human coronary artery endothelial cells in inflammation and coagulation.
abstract: The effects of anti-inflammatory plant extracts, such as black tea extract (BTE) and resveratrol (RSV) could modulate cell activation leading to atherosclerosis, however there is little comparative information about how different endothelial cell types are affected by these compounds. In order to compare human endothelial cells derived from different origins (umbilical vein or HUVEC, coronary artery or HCAEC, microvascular or HMVEC) and their interleukin-1beta (IL-1beta) responsiveness, IL-6 ELISA, RT-PCR, tissue factor assay, and prostacyclin responses using 6-keto PGF1alpha ELISA were determined. The IL-1beta-induced IL-6 levels were dose-dependent with highest responses seen in HCAEC. Significant inhibition of IL-1beta responses was achieved with BTE and RSV, with the largest decrease of IL-6 and TF seen in HCAEC. Prostacyclin levels were highest in HUVEC and were inhibited by RSV in all cell types. The differences between the endothelial cell types could account for greater susceptibility of coronary arteries to inflammation and atherogenesis.
authors.affiliation: Department of Rheumatology, University Medical Centre, Vodnikova 62, 1000 Ljubljana, Slovenia.
authors.forename: Katja
authors.initials: K
authors.lastname: Lakota
authors.forename: Katjusa
authors.initials: K
authors.lastname: Mrak-Poljsak
authors.forename: Blaz
authors.initials: B
authors.lastname: Rozman
authors.forename: Snezna
authors.initials: S
authors.lastname: Sodin-Semrl
mesh_terms: D015121:6-Ketoprostaglandin F1 alpha / Q000378:metabolism; D000818:Animals; D000975:Antioxidants / Q000494:pharmacology; D001777:Blood Coagulation / Q000502:physiology*; D002478:Cells, Cultured; D003331:Coronary Vessels / Q000166:cytology*; D004305:Dose-Response Relationship, Drug; D042783:Endothelial Cells / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism*; D006801:Humans; D007249:Inflammation / Q000378:metabolism*; D053583:Interleukin-1beta / Q000494:pharmacology; D015850:Interleukin-6 / Q000378:metabolism; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D000077185:Resveratrol; D013267:Stilbenes / Q000494:pharmacology*; D013662:Tea / Q000737:chemistry; D013925:Thromboplastin / Q000378:metabolism
chemical_list: D000975:Antioxidants; D053583:Interleukin-1beta; D015850:Interleukin-6; D010936:Plant Extracts; D013267:Stilbenes; D013662:Tea; D015121:6-Ketoprostaglandin F1 alpha; D013925:Thromboplastin; D000077185:Resveratrol