title: Soluble E-cadherin in systemic lupus erythematosus.
abstract: OBJECTIVE
  E-cadherin is a potent adherens junction molecule implicated in tissue morphogenesis, epithelial functioning, and immune regulation. Serum levels of soluble E-cadherin (sE-cadherin), an end product of proteolytic cleavage of E-cadherin, is increased in patients with cancer, infections, and inflammation-related diseases. The aim of our study was to measure serum levels of sE-cadherin in systemic lupus erythematosus (SLE) and to determine associations between serum levels of sE-cadherin and markers of inflammation and organ damage in female patients with SLE.
  
  
  METHODS
  Serum levels of sE-cadherin were analyzed by ELISA in 150 female patients with SLE and 31 healthy women. Simple and multiple regression analyses between sE-cadherin levels and disease-related variables were performed in patients with SLE.
  
  
  RESULTS
  Serum levels of sE-cadherin were elevated in patients with SLE compared with levels in healthy controls. sE-cadherin levels correlated positively with age, disease duration, SLE Collaborating Clinics Damage Index, erythrocyte sedimentation rate (ESR), s-creatinine, cholesterol, triglycerides, interleukin 6, and matrix metalloproteinase-3. In multiple regression analysis, s-creatinine, age, ESR, and triglycerides remained determinants of sE-cadherin. Within the patients with SLE, higher sE-cadherin levels were found only in patients with renal damage, i.e., s-creatinine > 90 μmol/l, glomerular filtration rate < 50 ml/min, or renal involvement ever by SLE.
  
  
  CONCLUSIONS
  Our study demonstrates significantly elevated serum levels of sE-cadherin in women with SLE compared with healthy women. The levels of sE-cadherin were positively correlated to s-creatinine, age, ESR, and triglycerides. Significantly elevated sE-cadherin levels were observed only in patients with renal damage.
authors.affiliation: From the Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy; and the Department of Obstetrics and Gynecology, Sahlgrenska Cancer Centre, Institute of Clinical Sciences, University of Gothenburg, Göteborg, Sweden.
authors.forename: Tao
authors.initials: T
authors.lastname: Jin
authors.forename: Katarina
authors.initials: K
authors.lastname: Almehed
authors.forename: Yihong
authors.initials: Y
authors.lastname: Zhu
authors.forename: Hans
authors.initials: H
authors.lastname: Carlsten
authors.forename: Helena
authors.initials: H
authors.lastname: Forsblad-d'Elia
mesh_terms: D000328:Adult; D015820:Cadherins / Q000097:blood*; D005260:Female; D005919:Glomerular Filtration Rate / Q000502:physiology; D006801:Humans; D007249:Inflammation / Q000097:blood; D007668:Kidney / Q000503:physiopathology*; D008180:Lupus Erythematosus, Systemic / Q000097:blood* / Q000503:physiopathology
chemical_list: D015820:Cadherins
keywords: RENAL DAMAGE; SYSTEMIC LUPUS ERYTHEMATOSUS; sE-CADHERIN