Objective To investigate the clinical significance of the plasma adrenomedullin(ADM) and endothelin(ET-1) concentrations in patients with serious injuries complicated by hemorrhagic shock.Method Plasma ADM and ET-1 concentrations were measured by radioimmunoassay in 38 hemorrhagic shock patients(A group)and 36 non-hemorrhagic shock patients(B group)among 74 serious injury patients in the early stage and 30 age-sexmatched healthy(C group) control subjects.Results Plasma ADM and ET-1 concentrations in B group and A group,including mild(A_1 group),middle(A_2 group) and serious(A_3 group) hemorrhagic shock patients were significantly higher than those of C group.The plasma ADM and ET-1levels were greatly higher in A group than in B group.Their levels in A_1,A_2 and A_3 groups were progressively increased.There were statistical differences between A_1 and A_2 group,A_1 and A_3 group,A_2 and A_3 group respectively.There were similar increases of the plasma ET-1/ADM ratio in A group,and the ratios in A_1,A_2 and A_3 group were progressively increased also.There were positive correlations between increased plasma ADM levels and the increased plasma ET-1 levels in both A group and B group patients(r=0.492,0.438,P

Objective To investigate the correlation between Hcy and blood lipid level and its diagnostic value in patients with cerebral infarction.Methods 218 patients with cerebral infarction were divided into the cerebral infarction group and no cercbral infarction group,based on the diagnosis results of head CT or MRI,and 60 healthy individuals were used as the control group.The levels of serum TC,TG,HDL-c,LDL-c and serum Hcy were determined in each group.The level of serum Hcy was used as a diagnostic-test and the criterion of cerebral infarction which was diagnosed by using head CT or MRI was used as a gold standard.Meanwhile,the sensibility,specificity,predictive value and likelihood ratio of Hcy were measured in patients with and without cerebral infarction.Results Levels of TC and Hcywere significantly elevated (P ＜ 0.01),but HDL-c level was significantly decreased in patients with and without cerebral infarction compared with the healthy people (P ＜ 0.05).Hcy level was shown negatively correlated with HDL-c (r =-0.144,P ＜ 0.05).The sensibility and specificity of Hcy in both two groups of patients with and without cerebral infarction were 42.20％ and 54.13％,the positive predictive value and negative predictive value of Hcy were 47.92％ and 48.36％,the positive likelihood ratio and negative likelihood ratio of Hcy were 0.92 and 1.07,respectively.Conclusion Hcy and blood lipid have definite correlation,but Hcy has low diagnostic value for cerebral infarction and may not be used as a biological marker for the cerebral infarction diagnosis.