To study the status and patterns of the drug utilization in the diseases of lower respiratory tract, the drug utilization for 290 inpatients with respiratory tract diseases in a Shanghai hospital druing 1993-1997 was analyzed by using Acute Physiology, Age, Chronic Health Evaluation(APACHE) and index of defined daily dose numbers(DDDs). The relativity between APACHE and DDDs was studied. It was found that most common drugs was anti-infection agents and expectorants, accounting for 39.06% and 38.38 %, respectively. The quantitative relationship between drug consumption and disease severity was not observed. It is concluded that the status of the drug utilization can't be demonstrated by analyzing the frequency of drug use by using DDDs.

Teaching reform is the strong requirement of the times and social development.Immunology department inTaishan Medical College integrated teaching and a variety of extra-curricular teaching,broke the constraints of traditional teaching model in time and space,played the leading role of teachers and inspired students' independent learning,thus improving the teaching effectiveness in immunology.

OBJECTIVE:To prepare total flavonoids of Hippophae rhamnoides(TFH)-PVP K30 solid dispersion,and to char-acterize and study its in vitro dissolution. METHODS:Solvent method was used to prepare TFH-PVP K30 solid dispersion with dif-ferent drug-loading ratio of 1:1,1:2,1:3,1:4,1:5;single factor test was designed to screen drug-loading ratio using dissolution parameter Td as index;orthogonal test was designed to optimize ultrasonic time,temperature of water bath and drying time for prep-aration technology using in vitro dissolution rate as index,and then validated. SEM,DSC and FT-IR were used to characterize sol-id dispersion. RESULTS:Td of TFH-PVP K30 solid dispersion was the lowest when drug-loading ratio was 1:3. Optimal technolo-gy was ultrasonic time 10 min,temperature of water bath 60 ℃ and drying time 12 h. 90 min accumulative dissolution rate of pre-pared TFH-PVP K30 solid dispersion was 90.22% in average(RSD=1.74%,n=3). The results of SEM,DSC and FT-IR showed that the drug as amorphous form dispersed in the PVP K30,the formation of hydrogen bond of the both. CONCLUSIONS:TFH-PVP K30 solid dispersion is prepared successfully,and in vitro dissolution rate of it is improved significantly.

The article introduces a new kind of waterproof equipment for endoscope. The equipment can resolve the problem that the endoscope's ocular and camera are always interfered by the Backstreaming liquid while performing surgical operation. The equipment is made up of three parts, which are ring-shaped locking structure, obturating ring and waterproof plastic sheath. Using the equipment can achieve the purpose of protecting the endoscope's ocular and camera effectively.
Endoscopes ; Equipment Design ; Protective Devices

Nonalcoholic fatty liver disease (NAFLD) has become one of the main causes of chronic liver diseases worldwide and is closely associated with metabolic syndrome. In-depth studies on the pathogenesis of NAFLD in recent years have shown that autophagy is a highly conservative process in eukaryotes and plays an important role in the progression of NAFLD, and therefore, it is expected to become a new target for the treatment of NAFLD. This article reviews the research advances in autophagy-related signal molecules in NAFLD, in order to provide new ideas for the treatment of NAFLD.

Objective To observe the influence of Huiyang Shengji Fang(Restoring Yang and Promoting Tissue Regeneration Decoction, HYSJF) and its decomposed formulas-Yiqi Wenyang Fang (Qi-supplementing and Yang-warming Decoction,YQWYF) and Huoxue Tongluo Fang(Blood-activating and collateral-freeing Decoction,HXTLF) on macrophage phenotype inversion,and discuss the mechanism of YQWYF and HXTLF in regulating macrophage phenotype inversion during the period of chronic skin ulcer. Methods THP-1 cells were stimulated and transformed into macrophages with PMA. After stimulated with LPS and INF-γ for 48 h, the macrophages were transformed into M1 macrophages. Lovastatin (10 μmol /L) was taken as control drug. The influence of YQWYF and HXTLF on activities of macrophages was observed by using CCK-8 method, and their influence on the phagocytosis of macrophages was detected by using neutral red uptake assay (NRU). The expressions of iNOS mRNA and Arg-1 mRNA were detected by using polymerase chain reaction (PCR) after M1 macrophages stimulated with lovastatin,YQWYF and HXTLF for 24 h. The levels of supernate TNF-α,IL-6,IL-12, IL-10 and VEGF were detected by using CBA method. The level of supernate TGF-β was detected by using ELISA. Results YQWYF,in dose of 4 mg/L (low-dose YQWYF group),0.8 mg/L (mid-dose YQWYF group) and 0.16 mg/L (high-dose YQWYF group), and HXTLF, in dose of 32 mg/L (low-dose HXTLF group),6.4 mg/L (mid-dose HXTLF group) and 1.28 mg/L (high-dose HXTLF group) had no influence on proliferation of macrophages but improved phagocytosis of NRU of macrophages. The expression of iNOS mRNA of M1 macrophages increased significantly after stimulated by LPS and INF-γ, and decreased significantly in lovastatin group, YQWYF group and HXTLF group compared with model group (P <0.01). The expression of Arg-1 mRNA of M2 macrophages decreased significantly after stimulated by LPS and INF-γ compared with normal group, was improved significantly in lovastatin group, YQWYF group and HXTLF group compared with model group (P <0. 01), and decreased significantly in YQWYF group and HXTLF group compared with lovastatin group. After M1 macrophages stimulated by above drugs for 24 h, the levels of TNF-α, IL-6 and IL-1 decreased significantly, and levels of VEGF and TGF-β increased significantly. The level of IL-10 increased significantly in high-dose YQWYF group (P<0.05),The levels of IL-10,VEGF and TGF-β had statistical difference in HXTLF group and high-dose YQWYF group compared with lovastatin group. Conclusion YQWYF and HXTLF can inhibit expression of iNOS mRNA of M1 macrophages and induce expression of Arg-1 mRNA of M2 macrophages, and can inhibit the secretion of M1 macrophage cytokine and improve secretion of M2 macrophage cytokine.

OBJECTIVE:To develop a method for rapid determination of moisture and salidroside in Rhodiolae crenulatae.METHODS:The content of moisture was determined by the methods of oven drying (as reference value);the content of salidroside was determined by HPLC (as reference value).Near infrared spectroscopy (NIR) combined with partial least squares (PLS) algorithm were adopted to establish quantitative model for the contents of moisture and salidroside.According to reference value,83 samples were collected for preprocessing spectra by Savitsky Golay with second derivative and Norris Derivative with first derivative.The optimal spectrum range of moisture and salidroside were 7 343.60-6 865.34,5 183.72-4 890.59 cm-1 and 7 050.47-4 327.48 cm-1,respectively.RESULTS:The content determination methodology of salidroside was in line with the requirement.The correlation coefficients of calibration for moisture and salidroside were 0.968 9 and 0.920 3,and the root mean square errors of calibration were 0.273 0 and 0.085 0,respectively.The correlation coefficients of predication were 0.977 1 and 0.930 0,and the root mean square errors of prediction were 0.222 0 and 0.075 5,respectively.CONCLUSIONS:The method is proved to be simple,rapid,non-destructive and accurate,which can be used for the rapid determination of moisture and salidroside in R.crenulatae.

Objective:In this study, the collected mosquito samples were subjected to viral isolation to identify the species and branch characteristics of arboviruses in five regions of Shanxi Province.Methods:Eight arboviruses in mosquito samples collected from July to September 2020 were detected by real-time fluorescent quantitative PCR, and virus isolation was carried out through cell culture. Virus isolates were identified and analyzed by molecular biology and bioinformatics method.Results:We detected 1 batch of positive samples of Japanese encephalitis virus, 2 batches of positive samples of Culex flavivirus and 8 batches of positive samples of Nam Dinh virus among 121 batches of mosquito samples. Seven virus isolates were isolated, numbered: SX-YJ-Cxp-4、SX-YJ-Ars-2、SX-YJ-Cxp-1、SX-LY-Cxp-10、SX-GP-Ars-5、SX-GP-Cxp-2、SX-GP-Cxp-4, all of which were identified as Nam Dinh virus, and the whole genome sequencing was performed on one of them, and the result showed that Shanxi Nam Dinh virus isolate and Yunnan Nam Dinh virus isolate belonged to the same evolutionary branch.Conclusions:Nam Dinh virus was isolated and identified on the specimen from Shanxi province for the first time.