title: Low T3 syndrome and long-term mortality in chronic hemodialysis patients.
abstract: OBJECTIVE
  To investigate the predictive value of low freeT3 for long-term mortality in chronic hemodialysis (HD) patients and explore a possible causative role of chronic inflammation.
  
  
  METHODS
  One hundred fourteen HD patients (84 males) consecutively entered the study and were assessed for thyroid function and two established markers of inflammation, high sensitivity C-reactive protein (hsCRP) and interleukin-6 (IL-6). Monthly blood samples were obtained from all patients for three consecutive months during the observation period for evaluation of thyroid function and measurement of inflammatory markers. The patients were then divided in two groups based on the cut-off value of 1.8 pg/mL for mean plasma freeT3, and were prospectively studied for a mean of 50.3 ± 30.8 mo regarding cumulative survival. The prognostic power of low serum fT3 levels for mortality was assessed using the Kaplan-Meier method and univariate and multivariate regression analysis.
  
  
  RESULTS
  Kaplan-Meier survival curve showed a negative predictive power for low freeT3. In Cox regression analysis low freeT3 remained a significant predictor of mortality after adjustment for age, diabetes mellitus, hypertension, hsCRP, serum creatinine and albumin. Regarding the possible association with inflammation, freeT3 was correlated with hsCRP, but not IL-6, and only at the first month of the study.
  
  
  CONCLUSIONS
  In chronic hemodialysis patients, low plasma freeT3 is a significant predictor of all-cause mortality. Further studies are required to identify the underlying mechanisms of this association.
authors.affiliation: Stylianos Fragidis, Elias Thodis, Stylianos Panagoutsos, Euthymia Mourvati, Ploumis Pasadakis, Vasilios Vargemezis, Department of Nephrology, Medical School, Democritus University of Thrace, 68100 Alexadroupolis, Greece.
authors.forename: Stylianos
authors.initials: S
authors.lastname: Fragidis
authors.affiliation: Stylianos Fragidis, Elias Thodis, Stylianos Panagoutsos, Euthymia Mourvati, Ploumis Pasadakis, Vasilios Vargemezis, Department of Nephrology, Medical School, Democritus University of Thrace, 68100 Alexadroupolis, Greece.
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Sombolos
authors.affiliation: Stylianos Fragidis, Elias Thodis, Stylianos Panagoutsos, Euthymia Mourvati, Ploumis Pasadakis, Vasilios Vargemezis, Department of Nephrology, Medical School, Democritus University of Thrace, 68100 Alexadroupolis, Greece.
authors.forename: Elias
authors.initials: E
authors.lastname: Thodis
authors.affiliation: Stylianos Fragidis, Elias Thodis, Stylianos Panagoutsos, Euthymia Mourvati, Ploumis Pasadakis, Vasilios Vargemezis, Department of Nephrology, Medical School, Democritus University of Thrace, 68100 Alexadroupolis, Greece.
authors.forename: Stylianos
authors.initials: S
authors.lastname: Panagoutsos
authors.affiliation: Stylianos Fragidis, Elias Thodis, Stylianos Panagoutsos, Euthymia Mourvati, Ploumis Pasadakis, Vasilios Vargemezis, Department of Nephrology, Medical School, Democritus University of Thrace, 68100 Alexadroupolis, Greece.
authors.forename: Euthymia
authors.initials: E
authors.lastname: Mourvati
authors.affiliation: Stylianos Fragidis, Elias Thodis, Stylianos Panagoutsos, Euthymia Mourvati, Ploumis Pasadakis, Vasilios Vargemezis, Department of Nephrology, Medical School, Democritus University of Thrace, 68100 Alexadroupolis, Greece.
authors.forename: Maria
authors.initials: M
authors.lastname: Pikilidou
authors.affiliation: Stylianos Fragidis, Elias Thodis, Stylianos Panagoutsos, Euthymia Mourvati, Ploumis Pasadakis, Vasilios Vargemezis, Department of Nephrology, Medical School, Democritus University of Thrace, 68100 Alexadroupolis, Greece.
authors.forename: Aikaterini
authors.initials: A
authors.lastname: Papagianni
authors.affiliation: Stylianos Fragidis, Elias Thodis, Stylianos Panagoutsos, Euthymia Mourvati, Ploumis Pasadakis, Vasilios Vargemezis, Department of Nephrology, Medical School, Democritus University of Thrace, 68100 Alexadroupolis, Greece.
authors.forename: Ploumis
authors.initials: P
authors.lastname: Pasadakis
authors.affiliation: Stylianos Fragidis, Elias Thodis, Stylianos Panagoutsos, Euthymia Mourvati, Ploumis Pasadakis, Vasilios Vargemezis, Department of Nephrology, Medical School, Democritus University of Thrace, 68100 Alexadroupolis, Greece.
authors.forename: Vasilios
authors.initials: V
authors.lastname: Vargemezis
keywords: C-reactive protein; Hemodialysis; Inflammation; Interleukin-6; Low T3 syndrome; Mortality