AIM:The method of HPLC was established for the analysis of fingerprint of Compound Danshen Tablet (Radix et Rhizoma Salvial miltiorrhizal,Radix et Rhizoma Notoginseng,Borneolum Syntheticum) and the determination of its main components. METHODS:The fingerprint chromatograms of liposoluble constituents of Compound Danshen Tablet were set up and its main components of 10 batches were determined. RESULTS:The fingerprint chromatograms were simulated with mean method and the analysis of different batches of Compound Danshen Tablet was made after the analysis of the fingerprint chromatograms from different groups of Compound Danshen Tablet. The similarities which were proved to be higher than 0.99 were calculated with the help of The Similarity Calculation Soft of Fingerprint Chromatography of Traditional Chinese Medicin. CONCLUSION:This method is accurate and provides a scientific basis for controlling the quality of Compound Danshen Tablet.

Objective To evaluate 11C-MDA,a cardiac sympathetic nerve presynaptic molecular probe,in acute myocardial ischemia (AMI) and to compare with 13N-Ammonia myocardial perfusion imaging.Methods Twelve Bama miniature pigs were used to establish AMI models.11C-MDA and 13N-Ammonia PET/CT were performed before and after model establishment.The defect fraction,ratio of defect to normal region,defect volume of 11C-MDA and 13N-Ammonia PET/CT were calculated.Paired-t test and twosample t test were used.Results Eight models were established successfully and 4 pigs died.The defect fractions on 11C-MDA and 13N-Ammonia myocardial imaging were significantly different (13.4±3.3 vs 7.4±1.0,18.8±4.4 vs 4.8±1.0,10.5±4.2 vs 4.4±0.9;t values:4.901,8.864,4.030,all P＜0.001) at the first,third and sixth month post-model establishment.The ratios of defect to normal region on 11C-MDA and 13N-Ammonia PET/CT myocardial images were significantly different (0.47±0.14 vs 0.59±0.10,0.43±0.13 vs 0.61±0.09;t values:-2.166,-3.415,both P＜0.05) at the first and third month post-model establishment.The defect volumes on 11C-MDA and 13N-Ammonia PET/CT were significantly different ((4.20±0.34) vs (2.55±0.11) cm3,(10.66±0.71) vs (2.46±0.12) cm3,(5.95±0.50) vs (2.44±0.11) cm3;t values:12.925,32.149,19.440,all P＜0.001) at the first,third and sixth month post-model establishment.Conclusions Myocardial ischemia-reperfusion and cardiac sympathetic restoration might occur at different times.The recovery of myocardial ischemia-reperfusion is earlier than that of the cardiac sympathetic nerve.

Objective To evaluate the prognostic value of human antibacterial peptide LL-37 in elderly patients with sepsis. Methods Elderly sepsis patients over 65-year-old satisfied the diagnostic criteria for sepsis and septic shock admitted to intensive care unit of East Hospital of Tongji University from January 2016 to December 2017 were enrolled (elderly sepsis group). Aged community-acquired pneumonia (CAP) patients hospitalized during the same period were enrolled as a control group for pneumonia, and the aged health check-ups served as a healthy control group during the same period. The peripheral blood LL-37 levels of all patients on the 1st, 3rd, 7th day of admission and the results on the day of physical examination in the healthy control group and on the day of admission in aged CAP group were recorded. C-reactive protein (CRP), arterial blood lactate (Lac), procalcitonin (PCT) were monitored, and acute physiology and chronic health evaluation Ⅱ (APACHEⅡ) and sequential organ failure assessment (SOFA) scores were calculated based on the worst values within 24 hours. The correlation between LL-37 and various indicators was analyzed by Spearman method. According to the 28-day clinical outcome, the elderly patients with sepsis were divided into survival group and non-survival group. The differences in all parameters between the two groups were compared. The statistically significant indicators were analyzed by receiver operating characteristic (ROC) curve, and the predictive value of each indicator for prognosis was evaluated. Results ① A total of 113 elderly patients with sepsis were enrolled in the final analysis, including 67 patients in sepsis group and 46 patients in septic shock group. Thirty-two patients were enrolled as healthy controls and 31 elderly patients with CAP as elderly pneumonia group. The PCT, CRP, Lac, APACHEⅡ and SOFA scores of the patients in the three groups were higher than those of the healthy control group, and they were gradually increased with the severity of infection. There was no significant difference in gender or age among the groups. Compared with the healthy control group, the other three groups had higher LL-37 level after admission, the LL-37 levels in the sepsis group and the septic shock group were decreased with the prolongation of the hospitalization time, and they were lower than the pneumonia group at 7 days after admission [LL-37 (μg/L): 1 403.9±501.9, 1 517.1±676.4 vs. 1 608.4±816.2, both P > 0.05]. It was shown by correlation analysis that the LL-37 level in peripheral blood of elderly patients with sepsis was significantly negatively correlated with APACHEⅡ score (r = -0.329, P = 0.007) and SOFA score (r = -0.344, P = 0.005), but no significant correlation with Lac was found (r = -0.128, P = 0.311). ② The 28-day survival analysis revealed that of the 113 elderly patients with sepsis, 54 (47.8%) survived at 28 days and 59 (52.2%) died. There was no significant difference in gender, age, PCT or CRP levels at 1 day after admission between the two groups. The 1-day Lac, APACHEⅡ and SOFA scores of the patients in the non-survival group were significantly higher than those in the survival group, they were gradually increased with the prolongation of the hospitalization time, and they were significantly higher than those in the survival group at 7 days after admission [Lac (mmol/L): 2.4 (1.4, 4.4) vs. 1.0 (0.8, 1.7), APACHEⅡ score: 21.77±5.85 vs. 13.74±4.99, SOFA score: 9.62±4.78 vs. 3.18±2.71, all P < 0.01]. With the prolongation of admission, there was no significant change in LL-37 level of peripheral blood in the survival group. The LL-37 level in the non-survival group showed a downward tendency, and it was significantly lower than that in the survival group at 7 days after admission (μg/L: 1 277.8±642.6 vs. 1 620.6±461.6, P < 0.05). It was shown by ROC curve analysis that the LL-37 in peripheral blood, Lac, APACHEⅡ score and SOFA score at 7-day of admission of elderly patients with sepsis had predictive value for prognosis, and LL-37 had the best predicted effect for 28-day death, the area under the ROC curve (AUC) of LL-37 was 0.670, 95% confidence interval (95%CI) = 0.513-0.757, when the optimal cut-off value was 1 283.0 μg/L, the sensitivity was 75.7%, and the specificity was 61.5%. Conclusions The expression of LL-37 increased in the early course of the disease in elderly patients with sepsis. However, as the disease progressed and worsened, the level of LL-37 had a decline tendency and was associated with death. The dynamic monitoring of LL-37 combined with APACHEⅡ and SOFA scores had clinical guidance value in predicting the prognosis of sepsis in the elderly.

Objective:To realize a fully automated synthesis of 11C-meta-hydroxyephedrine (mHED) and to perform imaging studies with it. Methods:11C-mHED was prepared by the 11CH 3-triflate method. The crude product was purified by semi-preparative high performance liquid chromatograph (HPLC) to obtain the final product. The radiochemical purity and specific activity were determined by radio-HPLC. The myocardial uptake and excretion process of the agent were monitored by microPET/CT imaging on 5 normal SD rats. The clinical imaging value was evaluated using PET/CT imaging in a patient (male, 42 years old) with myocardial infarction. Results:The automated synthesis of 11C-mHED was realized by a commercial synthesizer. The total synthesis time was about 30 min. The radiochemical yield was (15±2)% (non-decay corrected, n=10) and the radiochemical purity was greater than 98%. The specific activity was about 65 GBq/mmol. MicroPET/CT imaging in normal SD rats showed the myocardial uptake was highest at 10 min after the injection of imaging agent, and then the imaging agent was gradually excreted from the myocardium through the liver and gallbladder. PET/CT imaging of a patient with myocardial infarction showed an imaging agent defect near the apex in the inferior wall of the left ventricle, which was matched with results of ultrasound and electrocardiogram examination. Conclusions:11C-mHED can be successfully prepared automatically, with high radiochemical yield and specific activity. It can also highly concentrate in the myocardium, and the imaging effect with this agent is good in a patient with myocardial infarction.

【Objective】 To evaluate and analyze the impact of COVID-19 epidemic on inventory of red blood cells (RBCs)in local and municipal blood stations in China, and to provide reference for the management of public health emergencies. 【Methods】 Relevant data from 2018 to 2021 were collected, and the differences in the volume of qualified RBCs, the usage efficiency of inventory RBCs, the average daily distribution of RBCs,the blood distribution rate of RBCs prepared by 400 mL whole blood, the difference in the average storage days of RBCs at the time of distribution, the average daily inventory of RBCs and the time of the average daily inventory of RBCs to maintain the distribution in 24 local and municipal blood stations in China during the COVID-19 epidemic and non-epidemic periods were retrospectively analyzed. 【Results】 Compared with non-epidemic periods, the volume of qualified RBCs [(117 525.979 ±52 203.175)U] and the average daily distribution of RBCs [( 156. 468 ± 70. 186) U ] increased significantly, but the usage efficiency of inventory RBCs decreased(97.24%±0.51%) significantly (P<0.05).There was no significant difference in the blood distribution rate of RBCs prepared by 400 mL whole blood(73.88%±20.30%), the average storage days of RBCs distribution(13.040 ±3.486), the average daily stock quantity of RBCs[(2 280.542 ±1 446.538) U ] and the time of the average daily inventory of RBCs to maintain the distribution[(15.062 ±7.453) d] (P>0.5). 【Conclusion】 During the COVID-19 epidemic, the inventory management of RBCs operated well, the overall inventory remained relatively stable, the stock composition and storage period showed no significant change.