AIM: To establish a method for determination of volatile components(? pinene、? pinene、camphor、menthol、isoborneol、borneol、cinnamaldehyde、paeonol and laurocapram)in Liangmiao Honghua Ointment (Radix Zanthoxyli, Flos Carthami, Radix Notoginseng, paeonol, etc.). METHODS: Nine volatile components were isolated and determined on ZB WAX capillary column(30 m?0.25 mm?0.25 ?m) by GC. The column temperature was raised by program, 50 ℃(3 min)→30 ℃?min -1 →120 ℃(5 min)→10 ℃?min -1 →150 ℃ (1 min)→60 ℃?min -1 →230 ℃(12 min). Split stream sampling was applied,split ratio was 20∶1; injection port temperature was 210 ℃; detector: FID, temperature at 250 ℃. RESULTS: The nine volatile components were isolated well. The linearities were fine with the recoveries of 97%-100%, respectively. CONCLUSION: The method is convenient,rapid and accurate.It can be used to control the quality of Liangmian Honghua Ointment.

Objective To observe the difference between Radix AstragaLi(RA) and Radix Fici Hirtae(RFH) in immune regulation and improvement of anaemia.Methods Fatigue resistance,brain hypoxia and normal hypoxia tolerance were observed to measure the anti-stress function.Bloodletting-induced anemia model and cyclophosphamid-induced anemia model were used to observe the effect of blood enrichment.Phagocytic function of macrophage,serum hemolysin level and delayed type hypersensitivity(DTH) reaction were also detected.Results RA and RFH could improve the fatigue resistance,normal hypoxia tolerance and brain hypoxia tolerance,and increase the red blood cell count and hemoglobin content,enhance phagocytic function of macrophage and serum hemolysin level,and increase the DTH reaction.Conclusion Both RA and RFH have an effect on improving anti-stress ability,immune function and blood enrichment,and there are no significant difference between RA and RFH.

Objective:To retrospectively analyze the clinical characteristics and drug resistance among COVID-19 patients with bacterial and fungal infections.Methods:Clinical data of COVID-19 patients whose blood, urine, sputum and alveolar lavage fluid samples were positive for bacteria and fungi were collected in Tongji Hospital from February 10 to March 31, 2020. WHONET5.6 software was used to analyze drug susceptibility test results.Results:A total of 95 COVID-19 patients positive for pathogenic bacteria were enrolled and among them, 23 were non-critical patients and 72 were critical patients. The main symptoms in these patients included fever, cough with sputum, fatigue and dyspnea. Male and female critical patients accounted for 63.89% and 36.11%, respectively. Most of the patients with bacterial and fungal infections were critical type, accounting for 23.61%. The mortality rates of non-critical and critical patients were 13.04% and 61.11%, respectively. A total of 179 strains of pathogenic bacteria were isolated. The positive rate of Escherichia coli in non-critical patients was 37.50%, which was higher than that in critical patients. However, the positive rates of Acinetobacter baumannii and Klebsiella pneumoniae in critical patients were both 29.87%, higher than those in non-critical patients. There was no significant difference in the positive rate of gram-positive bacteria or fungi between non-critical and critical patients. It was noteworthy that the positive rate of Candida parapsilosis in blood samples of critical patients was relatively high, reaching 36.40%. Drug susceptibility test results showed that no carbapenem-resistant Escherichia coli stains were detected and 60.87% of Klebsiella pneumoniae strains were resistant to carbapenems. Acinetobacter baumannii strains were 100% resistant to three antimicrobial drugs. Methicillin-resistant Staphylococcus aureus strains accounted for 71.43%, but no vancomycin-resistant gram-positive cocci were found. Conclusions:Critical COVID-19 patients were mostly male and prone to multiple bacterial and fungal infections. The mortality of critical patients was higher than that of non-critical patients. Critical COVID-19 was often complicated by hospital acquired infections caused by bacteria including Acinetobacter baumannii and Klebsiella pneumoniae with high drug resistance.

This study was aimed to investigate the blood-enriching effect of processed Radix Polygoni Multiflori on blood deficiency rats. A total of 140 SD rats were randomly divided into 14 groups, which were the blank control group, blood deficiency model group, positive control group and 11 test groups. The blank control group and model control group were treated with distilled water and the positive control group was given X ue b ao Buxue soluble granules. The test groups were treated with 11 different kinds of processed Radix Polygoni Multiflori sam-ples at a dosage of 2 g?kg-1 respectively. All rats were given drugs once a day. After 10 days, blood samples were collected and the amount of red blood cell (RBC), hemoglobin (Hb), haematocrit (HCT), whole blood viscos-ity and plasma viscosity, prothrombin time were estimated. The results showed that 9 processed Radix Polygoni Multiflori groups can increase the number of RBC and Hb significantly ( P < 0 . 05 or P < 0 . 01 ) in blood deficien-cy rat models. They were the sample processed with decoction of black soybean (DBS) for 24 h, with wine and DBS combination for 24 h , steamed for 4 h and 8 h under high pressure , with DBS for 6 h and 8 h , with wine for 6 h, with wine and DBS combination under high pressure, respectively. The samples processed with DBS un-der high pressure for 8 h increased RBC and Hb were more obviously ( P < 0 . 01 ) . The 8 groups can improve the situation of functional disorder of blood rheology significantly ( P < 0 . 05 or P < 0 . 01 ) . They were the unprocessed samples, processed with DBS and wine for 24 h respectively, with DBS and wine combination for 24 h, steamed for 4 h and 8 h or steamed with DBS for 6 h and 8 h or with wine for 6 h under high pressure respectively. It was concluded that the blood-enriching effect was improved while the R adix Polygoni Multiflori was processed with DBS or wine and under high pressure for 6-8 h .

Objective:To explore the damage of panretinal photocoagulation (PRP) to the subbasal nerve plexus (SNP) and its related mechanisms by comparing SNP changes in wide-field mosaic between before and after PRP treatment in diabetic patients.Methods:A randomized controlled study was conducted.Fifty-seven patients (114 eyes) with type 2 diabetes mellitus and binocular diabetic retinopathy (DR) stage IV to receive PRP treatment in Shanxi Eye Hospital from April to November 2019 were enrolled.The subjects were randomly divided into horizontal-vertical laser group and vertical-horizontal laser group according to a random number table.Twenty-nine eyes from 29 patients were assigned to the horizontal-vertical laser group with the photocoagulation sequence of temporal-nasal-inferior-superior.Twenty-eight eyes from 28 patients were assigned to the vertical-horizontal laser group with the photocoagulation sequence of inferior-superior-temporal-nasal.The severer eyes of each subject were chosen as the treatment eye and the contralateral eyes were chosen as the control eye.Corneal confocal laser scanning microscopy (CCM) was performed before PRP treatment, 1 week after each photocoagulation, and 1 month after the completion of PRP treatment to collect images of the SNP over an area of 2-3 mm around the whorl-like pattern.Captured images at each time were merged into one image by using the Photoshop CC 2017 image processing software, and then the nerve fiber length (NFL) of whorl-like pattern was measured by Neuron J image analysis software.McGill pain questionnaire was used to investigate the pain of patients after each photocoagulation.The NFL changes of SNP at different time points were compared between different eyes and different photocoagulation sequence groups.The study protocol adhered to the Declaration of Helsinki and was approved by an Ethics Committee of Shanxi Eye Hospital (No.201804b). Written informed consent was obtained from each patient prior to entering the study cohort.Results:After PRP treatment, there were different degrees of neural structure loss of SNP nerve fibers in 11 treatment eyes, but there was no significant change in SNP nerve fibers in the control eyes.There were significant differences in NFL between the treatment eyes and the control eyes at various time points ( Feyes=2.020, P=0.039; Ftime=4.062, P=0.001). In the horizontal-vertical laser group, different degrees of neural structure loss on the photocoagulation side were found in SNP nerve fibers after the first and second photocoagulation.In the vertical-horizontal laser group, different degrees of neural structure loss on the photocoagulation side were found in SNP nerve fibers after the third and fourth photocoagulation.There was no significant difference in NFL of treatment eyes between the two groups ( Fgroup=0.099, P=0.754), but there was a significant difference in NFL at various time points before and after treatment ( Ftime=5.231, P<0.001). There were 9 (9/57) patients who complained of pain after PRP, which occurred at the first time of photocoagulation in 7 of them. Conclusions:SNP damage may occur after PRP in patients with DR, and SNP is prone to be damaged on the photocoagulation side when performing horizontal photocoagulation.