Abstract
Objective To investigate the correlation of serum cystatin C and creatinine levels with cerebral infarction. Methods Eighty-four patients with cerebral infarction diagnosed by clinical manifestations, CT and (or) MRI and 76 healthy subjects were selected. Cystatin C level was tested by enzyme-linked immunosorbent assay (ELISA) and creatinine level was tested by the method of nitroxanthic acid. The correlation of cystatin C and creatinine levels with cerebral infarction was explored. Results The level of serum cystatin C in the cerebral infarction group (1.69±0.60 mg/L) was significantly lower as compared with that in the control group (2.00±0.67 mg/L) (t=-3.084, P=0.002); the level of serum creatinine in the cerebral infarction group (86.62±14.02 μmol/L) was significantly higher as compared with that in the control group (80.88±13.71 μmol/L) (t=2.611, P=0.010). Negative correlation between level of serum cystain C and cerebral infarction was noted (r=-0.238, P=0.002),while the level of serum creatinine was positively related to cerebral infarction (r=0.208, P=0.010).Conclusion A close correlation between cerebral infarction and both the levels of cystain C and creatinine exists, with cystatin C being a protective factor and creatinine being a risk factor for clinical cerebral infarction. Key words: Cerebral infarction; Cystatin C; Creatinine
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