Journal of renal nutrition : the official journal of the Council on Renal Nutrition of the National Kidney Foundation · 2009
Association between C-reactive protein and biomarkers of bone and mineral metabolism in chronic hemodialysis patients: a cross-sectional study.
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Lee Chien-Te, Tsai Yu-Che, Ng Hwee-Yeong, Su Yih, Lee Wen-Chin, Lee Lung-Chih, Chiou Terry Ting-Yu, Liao Shang-Chih, Hsu Kao-Tai
Аннотация
OBJECTIVE: Both chronic inflammation and dysregulation of bone and mineral metabolism are closely related with long-term outcomes of dialysis patients. Our objective was to investigate the relationship between these two abnormalities.
DESIGN: This was a cross-sectional study.
SETTING: This study was performed at a hospital-based hemodialysis center.
PATIENTS: We enrolled 448 (male, 198; female, 250) clinically stable hemodialysis patients. Patients with chronic inflammatory disease, malignancy, or viral hepatitis were excluded. Their age (mean +/- SD) was 57.4 +/- 12.5 years.
MAIN OUTCOME MEASURES: Biomarkers, including high-sensitivity C-reactive protein (hsCRP), total calcium, phosphate, and intact parathyroid hormone levels, were measured and compared with the recommended range in the K/DOQI guidelines. Correlations between these parameters were analyzed, and factors independently associated with hsCRP and the calcium phosphate product (Ca x P) were identified by regression analysis.
RESULTS: Most patients did not achieve the K/DOQI recommended therapeutic range in the four parameters, and only 50 patients (11%) met their treatment goals. The hsCRP level was directly related to calcium, phosphate, and Ca x P. Patients who achieved the guidelines' range had lower hsCRP levels (1.97 mg/L vs. 2.71 mg/L, P < .05). A high hsCRP level (> or = 10 mg/L) was associated with higher calcium, phosphate, and Ca x P levels, and lower albumin levels. Serum albumin, Ca x P, alkaline phosphatase, and diabetes independently predicted hsCRP levels.
CONCLUSION: There is a strong association between chronic inflammation and the disturbance of bone mineral metabolism in chronic hemodialysis patients.
DESIGN: This was a cross-sectional study.
SETTING: This study was performed at a hospital-based hemodialysis center.
PATIENTS: We enrolled 448 (male, 198; female, 250) clinically stable hemodialysis patients. Patients with chronic inflammatory disease, malignancy, or viral hepatitis were excluded. Their age (mean +/- SD) was 57.4 +/- 12.5 years.
MAIN OUTCOME MEASURES: Biomarkers, including high-sensitivity C-reactive protein (hsCRP), total calcium, phosphate, and intact parathyroid hormone levels, were measured and compared with the recommended range in the K/DOQI guidelines. Correlations between these parameters were analyzed, and factors independently associated with hsCRP and the calcium phosphate product (Ca x P) were identified by regression analysis.
RESULTS: Most patients did not achieve the K/DOQI recommended therapeutic range in the four parameters, and only 50 patients (11%) met their treatment goals. The hsCRP level was directly related to calcium, phosphate, and Ca x P. Patients who achieved the guidelines' range had lower hsCRP levels (1.97 mg/L vs. 2.71 mg/L, P < .05). A high hsCRP level (> or = 10 mg/L) was associated with higher calcium, phosphate, and Ca x P levels, and lower albumin levels. Serum albumin, Ca x P, alkaline phosphatase, and diabetes independently predicted hsCRP levels.
CONCLUSION: There is a strong association between chronic inflammation and the disturbance of bone mineral metabolism in chronic hemodialysis patients.