Effect of microinflammation on assessment of iron metabolism in peritoneal dialysis patients

Objective To analyze the correlation between C-reactive protein(CRP) and indicators of iron metabolism,and explore the effect of microinflammatory state on iron metabolism in peritoneal dialysis patients.Methods Seventy-nine patients undergoing continuous ambulatory peritoneal dialysis(CAPD) from ou...

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Main Authors: FAN Zhe, JIANG Xiao, WU Yong-gui, WANG Juan, QI Xiang-ming
Format: Article
Language:zho
Published: Editorial Department of Journal of Clinical Nephrology 2015-01-01
Series:Linchuang shenzangbing zazhi
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Online Access:http://www.lcszb.com/thesisDetails?columnId=57920349&Fpath=home&index=0
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Summary:Objective To analyze the correlation between C-reactive protein(CRP) and indicators of iron metabolism,and explore the effect of microinflammatory state on iron metabolism in peritoneal dialysis patients.Methods Seventy-nine patients undergoing continuous ambulatory peritoneal dialysis(CAPD) from our hospital were enrolled in the study.The data of age,sex,PD duration,systolic blood pressure(SBP),diastolic blood pressure(DBP),Kt/V,hemoglobin,CRP,serum iron(SI),transferrin saturation(TSAT),serum ferritin(SF),serum albumin,serum creatinine,and urea nitrogen were collected.The patients were divided into group A(CRP≤8 mg/L) and group B(CRP>8 mg/L) according to the levels of CRP.The patients were also divided into group C(SF<500 μg/L) and group D(SF≥500 μg/L) according to the levels of SF.Comparison of data between groups(A and B,or C and D) was performed using the Student t-test for continuous parametric data.The correlation between CRP and SI,TSAT,SF,SBP or DBP was analyzed by Pearson correlation analysis.Results(1) As compared with group A,the levels of SF were significantly increased(t =- 2.976,P<0.01),and those of SI,TSAT,SBP and DBP were significantly decreased in group B(t= 3.743,P<0.01 i t= 2.420,P = 0.018;t = 2.181,P = 0.032;2 = 2.328,P = 0.023 respectively).There was no significant difference in hemoglobin between group A and group B(t = 0.680,P =0.498).(2) No significant difference was found in the clinical data between group C and group D such as age,sex,PD duration,SBP,DBP,Kt/V,hemoglobin,CRP,SI,TSAT,serum albumin,serum creatinine,and urea nitrogen.(3) Pearson correlation analysis revealed that CRP had a positive correlation with SF(r = 0.460,P<0.01) and a negative correlation with SI(r =- 0.350,P = 0.002).Conclusions The indicators of iron metabolism are constantly affected by microinflammatory state in CAPD patients.Therefore,the combined tests of SI,TSAT,SF and CRP may favor the correct assessment of iron metabolism state.
ISSN:1671-2390