[Clinical Characteristics of Children with Hemophagocytic Syndrome with Different EB Virus DNA Loads].

OBJECTIVE: To analyze the clinical characteristics of hemophagocytic syndrome (HLH) children with different EB virus (EBV) DNA loads, and to explore the relationship between differential indicators and prognosis. METHODS: Clinical data of 73 children with HLH treated in our hospital from January 2015 to April 2022 were collected. According to EBV DNA loads, the children were divided into negative group (≤5×102 copies/ml), low load group (>5×102-<5×105 copies/ml) and high load group (≥5×105copies/ml）. The clinical symptoms and laboratory indexes of the three groups were compared, and the ROC curve was used to determine the best cut-off value of the different indexes. Cox regression model was used to analyze the independent risk factors affecting the prognosis of children, and to analyze the survival of children in each group. RESULTS: The proportion of female children, the swelling rate of liver and spleen lymph nodes and the involvement rate of blood, liver, circulation and central nervous system in the high load group were higher than those in the negative group. The incidence of disseminated intravascular coagulation(DIC) and central nervous system(CNS) involvement in the high load group were higher than those in the low load group. The liver swelling rate and circulatory system involvement rate in the low load group were higher than those in the negative group(P<0.05). PLT counts in the high load group were significantly lower than those in the negative group, and the levels of GGT, TBIL, CK-MB, LDH, TG, SF, and organ involvement were significantly higher than those in the negative group. The levels of CK, LDH, SF and the number of organ involvement in the high load group were significantly higher than those in the low load group. The levels of GGT and TBIL in low load group were significantly higher than those in negative group. In terms of treatment, the proportion of blood purification therapy in the high and low load group was significantly higher than that in the negative group(P<0.01). ROC curve analysis showed that the best cut-off values of PLT, LDH, TG and SF were 49.5, 1139, 3.12 and 1812, respectively. The appellate laboratory indicators were dichotomized according to the cut-off value, and the differential clinical symptoms were included in the Cox regression model. Univariate analysis showed that LDH>1139 U/L, SF>1812 µg/L, dysfunction of central nervous system, number of organ damage, DIC and no blood purification therapy were the risk factors affecting the prognosis of children (P<0.05); Multivariate analysis shows that PLT≤49.5×109/L and dysfunction of central nervous system were risk factors affecting the prognosis of children (P<0.05). Survival analysis showed that there was no significant difference in the survival rate among the three groups. CONCLUSION: The incidence of adverse prognostic factors in children with HLH in the EBV-DNA high load group is higher, and there is no significant difference in the survival rate of the three groups after blood purification therapy. Therefore, early identification and application of blood purification therapy is of great significance for children with HLH in the high load group.

Effect of Shenmai Injection on ventricular diastolic function in patients with chronic heart failure: An assessment by tissue Doppler imaging.

OBJECTIVE: To assess the effect of Shenmai Injection (SMI) on left ventricular diastolic function (LVDF) in patients with chronic heart failure (CHF) by tissue Doppler imaging (TDI). METHODS: Sixty-four CHF patients were randomly assigned to two groups, the observation group and the control group. Basic treatment including polarized liquid therapy was given to all the patients. In addition, SMI was given to patients of the observation group. The treatment duration was 14 days. TDI was performed in all the patients 3 days prior to the initiation of the treatment and one week after the medication to measure the average movement velocity of the mitral ring of the left ventricle at the early systolic stage and late diastolic stage (Ea and Aa); the outcomes were compared with the corresponding parameters obtained from blood flow Doppler echocardiography, namely, the velocity of the E-wave (E) and A-wave (A). RESULTS: After treatment, Ea and Ea/Aa increased and Aa decreased significantly in the observation group (P<0.05). In the control group, although some improvement was seen, there was no statistically significant change (P>0.05). No statistical significance was shown between groups in these parameters after treatment. CONCLUSION: TDI assessment shows that SMI could effectively improve the LVDF in CHF patients.

[Study on the technics of adsorption and purification of baicalin by different macroporous resins].

OBJECTIVE: To ascertain the fittest technical parameters by studying the application of macroporous resins used to purify active components of baicalin. METHODS: To evaluate the ability of adsorption and re-adsorption of macroporous resins selected, the statical and dynamic adsorption-readsorption durations were also investigated to select the optimum macroporous resins, with the content of flavonoids as the standard. RESULTS: The optimum macroporous resins was HPD-100. In the adsorption cours, the ratio between the amount of medicinal materials and the volume of macroporous resins was 3.0 and there was no more absorbed when the ratio was 12.5; the optimum ethanol concentration was 50% in readsorption duration. CONCLUSION: HPD-100 is the optimum macroporous resin to purify bailcalin and enhance its refined rate.