Study on Serum Levels of SBDPs and Their Clinical Significance in Patients with Traumatic Brain Inj ury / 现代检验医学杂志

ABSTRACT

Objective To analyze the changes of serum levels ofαII-spectrin breakdown products (SBDPs)in traumatic brain inj ury (TBI)patients,and further to investigate the clinical diagnosis value of SBDPs for patients with TBI,especially with mTBI.Methods The serum levels of SBDPs were examined in 43 severe TBI (sTBI)patients,43 mild TBI (mTBI)patients and 43 healthy controls using enzyme linked immunosorbent assay (ELISA).The diagnostic usefulness of SBDPs for TBI patients were assessed by Receiver Operating Characteristic (ROC)curves analysis.Results There was no significant difference of SBDP145 among the three groups (F=1.340,P>0.05).Serum levels of SBDP120 in controls,mTBI and con-trols were 7.06±2.23,11.67±9.14 and 12.64±11.44 ng/ml,respectively.Compared with controls,serum levels of SB-DP120 were significantly higher in patients with sTBI (F=9.873,P=0.001)and mTBI (F=9.873,P=0.008),while there was no significant difference of SBDP120 between sTBI patients and mTBI patients (F=9.873,P=0.515>0.05). The area under ROC curve (AUC)of SBDP120 for TBI patients was 0.781 (95% CI:0.690~0.872,P<0.001).For mTBI patients,the area under ROC curve was 0.736 (95% CI:0.624~0.848,P<0.001).And for discriminating TBI patients with CT negative or positive,the area under ROC curve was 0.709 (95% CI:0.582~0.837,P=0.007<0.01).Conclusion The serum levels of SBDP120 were significantly increased in TBI patients,especially mTBI patients.And the serum levels of SBDP120 can be used as potential non-invasive biomarker for mTBI patients.