PMID- 9594211 OWN - NLM STAT- MEDLINE DCOM- 19980602 LR - 20061115 IS - 0366-6999 (Print) IS - 0366-6999 (Linking) VI - 110 IP - 7 DP - 1997 Jul TI - Research on the mechanism of endothelin inflammatory effects on human mesangial cells. PG - 530-4 AB - OBJECTIVE: To investigate the mechanism of endothelin (ET) inflammatory effects on human mesangial cells (HMC). METHODS: The following experiments were performed on cultured HMC after ET-1 stimulation: (1) the expression of tumor necrosis factor-alpha (TNF alpha), interleukin-1 beta (IL-1 beta), intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1) and endothelin-1 (ET-1) itself messenger ribonucleic acid (mRNA) was determined by Northern Blot analysis; (2) the TNF alpha concentration was tested with radioimmunoassay; the IL-1 activity was assayed by the enhancement of thymocyte proliferation in response to mitogen; the surface expression of ICAM-1 and VCAM-1 was measured with cell enzyme linked immunoadsorbent assay (ELISA) analysis. RESULTS: ET-1 (10(-7) mol/L) induced the following changes on HMC: (1) up-regulation of the expression of TNF alpha mRNA and protein; (2) up-regulation of the expression of ICAM-1 and VCAM-1 mRNA and protein; (3) up-regulation of the expression of ET-1 itself mRNA. However, the expression of IL-1 mRNA and protein was not changed. CONCLUSIONS: ET-1 can stimulate HMC to produce TNF alpha, ICAM-1 and VCAM-1, and thereby induce inflammatory effects. ET-1 can also stimulate HMC to up-regulate the expression of ET-1 itself, so as to amplify inflammatory effects. So, ET-1 is actually an inflammatory mediator and may play an important role in the pathogenesis of glomerulonephritis. FAU - Chen, Y AU - Chen Y AD - Division of Nephrology, First Hospital, Beijing Medical University, China. FAU - Sun, Y AU - Sun Y FAU - Lin, J AU - Lin J FAU - Zhou, A AU - Zhou A FAU - Wang, H AU - Wang H LA - eng PT - Journal Article PL - China TA - Chin Med J (Engl) JT - Chinese medical journal JID - 7513795 RN - 0 (Endothelin-1) RN - 0 (Interleukin-1) RN - 0 (Interleukin-1beta) RN - 0 (Interleukin-6) RN - 0 (Peptide Fragments) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (Vascular Cell Adhesion Molecule-1) RN - 106021-96-9 (interleukin-1beta (163-171)) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) SB - IM MH - Cells, Cultured MH - Endothelin-1/metabolism/*pharmacology MH - Glomerular Mesangium/cytology/*metabolism MH - Humans MH - Inflammation MH - Intercellular Adhesion Molecule-1/metabolism MH - Interleukin-1/*metabolism MH - Interleukin-1beta MH - Interleukin-6/metabolism MH - Peptide Fragments/*metabolism MH - Tumor Necrosis Factor-alpha/metabolism MH - Up-Regulation MH - Vascular Cell Adhesion Molecule-1/metabolism EDAT- 1997/07/01 00:00 MHDA- 1998/05/22 00:01 CRDT- 1997/07/01 00:00 PHST- 1997/07/01 00:00 [pubmed] PHST- 1998/05/22 00:01 [medline] PHST- 1997/07/01 00:00 [entrez] PST - ppublish SO - Chin Med J (Engl). 1997 Jul;110(7):530-4.