Objective To get knowledge of the indoor air pollution states in the newly renovated apartments in Xi’an city, and explore the relationship among the major pollutants and the relationship between the pollutants and the differences of seasons. Methods From January, 2006 to May, 2007, we randomly selected 138 newly renovated (3 months or less) apartments in the urban area of Xi’an city, tested their indoor (including bedrooms, living room, dining room, kitchen, bathrooms, study, a total of 597) content of formaldehyde, total volatile organic compounds (TVOCs), ammonia, benzene, toluene and xylene. Results Among which were detected in all of the pollutants, total volatile organic compounds (TVOCs) and formaldehyde own the highest exceeding rates, respectively 69.8% and 60.8%. They are followed by ammonia, whose exceeding rate is 13.2%, xylene which has the highest exceeding rate among the benzene compounds, 8.7%. We did comparative analysis of the concentration in different types of rooms for the pollutants which are among the top four in exceeding rate ranks, and found that only for formaldehyde, there is significant difference in statistics (P

Objective To find out more about the population structure and clonal complex of clinical Vibrio parahaemolyticus strains in Asia.Methods Clinical Vibrio parahaemolyticus strains data were screened in Asia with complete ST and pST types from PubMLST public database,their subgroup and complex were analyzed,and the minimum spanning tree based on ST and pST types respectively was completed.Results From the database,341 items of ST and pST types of Asian clinical Vibrio parahaemolyticus strains were screened,including 157 ST,most of which were of ST3 type.Totally 214 items of data came from China (including Hong Kong and Taiwan),and covered 133 ST,most of which were of ST3 type.eBURST software was used and 17 groups and 94 singletons were found.Software STRUCTURE analysis showed that the appropriate subset number of clinical V.parahaemolyticus strains in Asia was 7,and that the average distance between samples in each subgroup was 0.9113.Conclusion Clinical V.parahaemolyticus strains in Asia show high diversity and can be subdivided into seven subgroups.ST3 type is dominating when multilocus sequence typing(MLST)is used and pST2 type is the majority by AA-MLST typing.

Objective To investigate the effect of Helicobacter pylori (Hp) infection on plasma lpid and high sensitive C reactive protein (hs-CRP) levels in patients with cerebral infarction, and explore the pathogenesy. Methods Seventy-nine cerebral infarction patients without nearly inflammatory reaction disease were recruited. Hp was detected by breath test,the patients were divided into infection-negative group (15 cases), light infection group (29 cases) and severe infection group(35 cases) according to the results,the last two groups were as infection-positive group. The plasma lipid and hs-CRP levels were exanined.Results Compared with infection-negative group,the total cholesterol,low density lipoprotein,hs-CRP levels increased obviously in infecton-positive group (P ＜ 0.05). The level of hs-CRP in severe infection group was higher than that in light infection group [(10.21 ±4.98) mg/L vs. (5.81 ±4.21) mg/L](P=0.001 ). Conclusions Hp infection may increase vascular inflammatory reaction through lipid metabolic disturbance. The cerebral infarction with higher Hp infection, and with the degree of infection increased, the risk is also increased accordingly.

Objective To investigate the distribution of elderly metabolic syndrome(MS)and its components in the elderly population,and to analyze its correlation with the common chronic diseases in the elderly.Methods The general situation,history of diseases and health examination results were collected in 362 elderly with an average age of 79.2 years visiting Beijing Hospital.They were grouped into 3 groups of the young old age(65-74 years old),the middle old age(75-84 years old)and the older old age(85-98 years).The prevalence distribution of MS and its correlation with the common chronic diseases in the elderly were analyzed.Results MS prevalence in average was 28.4％ (103 cases)in the elderly population,with 18.6％ (67 cases) in the young old group,26.3％ (95 cases)in middle old group,and 33.7％ (122 cases)in older old group.The tendency was rising up with age increase,and the MS prevalence was higher in older old group than in other groups (x2 =8.57,P =0.03).Correlation was observed between genesis of MS and common geriatric chronic diseases.The prevalence differences in hypertension,prostatic hyperplasia,diabetes mellitus,and coronary heart disease were statistically significant higher in MS group than in non-MS group(P =0.02,0.01,0.02,0.03,respectively).Conclusions MS prevalence of elderly population is relatively high,and has significant correlation with other chronic diseases.We need to recognize the harm of MS,to conduct regular monitoring and management according to risk level,and practice patient educations to reduce MS negative effects on elderly life quality and health.

This study was ai med to observe the taste-masking effects of Neotame on bitter Chinese herbal ingredients. Five kinds of herbal ingredients, which include Scutellaria baicalensis Georgi, Cortex Phellodendri chinensis, Coptis chinensis Franch, Gentiana scabra Bunge, Andrographis paniculata, were selected to measure the bitterness degree of decoctions with berberine solution as the benchmark. The decreasing of bitterness degree was used as index. Healthy volunteers were recruited to taste and compare the changes of bitterness of decoctions with the taste-masking effects of Neotame. Different concentrations of Neotame were selected in the determination of the influence on changes of bitterness. The results showed that when the concentration of Neotame was at 0.012 5‰-0.4‰, taste-masking effects of Neotame on selected herbal decoctions were in a concentration-dependent fashion. When the concentration of Neotame was 0.4‰, the reduced bitterness of S. baicalensis Georgi and Cortex P. chinensis decoctions were 1.22 and 1.77, by 70.11% and 71.88%, respectively. Three highly-bitter herbal ingredients C. chinensis Franch, G. scabra Bunge and A . paniculata were also reduced in bitter taste by 49.12%, 50.87% and 38.39%, with the bitter reduced value (△I) of 1.78, 2.02 and 1.43, respectively. It was concluded that Neotame exerted taste masking potential on bitter herbal ingredients with different bitter degrees.

Objective To optimize preparation process of Zushima Gel Cream. Methods The comprehensive evaluation set sensory evaluation, initial adhesive force, viscous force, and peeling strength score as indexes. The mixing time, refining temperature, mixing speed, and powder adding sequence were investigation factors. Orthogonal experiment was used to optimize forming process. Results Conditions of optimized preparation process were as following: add Zushima powder in Viscomate NP-700 and glycerol; mixing time was 5 min; refining temperature was 40 ℃; mixing speed was 100 r/min. Conclusion The preparation process is good and optimized Zushima Gel Cream has a good adhesive force, good glossiness and excipients. The preparation process is good.

Objective To explore the skills and summarize the experience in the establishment of orthotopic liver transplantation rat models from donation after cardiac death (DCD). Methods According to the time of warm ischemia, 120 rats were divided into 3 groups: group A (warm ischemia for 0 min, n=40 pairs), group B (warm ischemia for 10 min, n=40 pairs) and group C (warm ischemia for 20 min, n=40 pairs). Orthotopic liver transplantation was performed by the modified two-cuff technique in 3 groups. The time of each stage of surgery was recorded in 3 groups. The survival rate at the end of surgery, 24 h, 72 h and 7 d after surgery was recorded in 3 groups. The dead rats were immediately subject to anatomical examination to identify the cause of death. Results The cold ischemia time of donor liver, anhepatic phase and operation time of the recipients did not significantly differ among three groups (all P>0.05). In groups A, B and C, the survival rate at the end of surgery was 97%, 97%, and 100% respectively. The survival rate at postoperative 24 h was 92%, 90% and 92% respectively. The survival rate at postoperative 72 h was 90%, 80% and 77% respectively. The survival rate at postoperative 7 d was 85%, 70% and 57% respectively. The survival rate at the end of surgery, postoperative 24 h and 72 h did not significantly differ among 3 groups (all P>0.05). At postoperative 7 d, the survival rate in group C was significantly lower than that in group A (P<0.05). Surgical operation was the major cause of intraoperative and postoperative 24 h death. Bile leakage and ischemic hepatic failure were the causes of death at postoperative 72 h. Biliary duct complications were the main causes of death at postoperative 7 d. The quantity of rats developing with biliary duct complications was increased along with the prolongation of warm ischemic time. Conclusions The success of stable establishment of rat models with orthotopic liver transplantation from DCD depends upon the protection of the liver and biliary function. The difficulty lies in the anastomosis of the suprahepatic inferior vena cava and the shortening of anhepatic phase.

ObjectiveTo investigate the feasibility of applying electronic nose technology to rapidly identify Bletillae Rhizoma and its approximate decoction pieces. MethodA total of 134 batches of Bletillae Rhizoma and its approximate decoction pieces， including 45 batches of Bletillae Rhizoma， 30 batches of Gastrodiae Rhizoma， 30 batches of Polygonati Odorati Rhizoma and 29 batches of Bletillae Ochraceae Rhizoma， were collected as test samples. The olfactory sensory data of the samples were collected by PEN3 electronic nose as the independent variable（X）. Based on the identification results of the 2020 edition of Chinese Pharmacopoeia and local standards， as well as the high performance liquid chromatography（HPLC） fingerprint and original purchase information of 134 batches of the decoction pieces， the benchmark data Y of the identification model were obtained， and four chemometric methods of principal component analysis-discriminant analysis（PCA-DA）， partial least squares-discriminant analysis（PLS-DA）， least square-support vector machine（LS-SVM） and K-nearest neighbor（KNN） were used to establish the binary identification model for 45 batches of Bletillae Rhizoma and 89 batches of non-Bletillae Rhizoma and the quadratic identification model of the four kinds of decoction pieces， that is， Y=F（X）. ResultAfter leave-one-out cross validation， the positive discrimination rates of the above four models were 97.01%， 97.01%， 98.51% and 97.01% in the binary identification， and 97.76%， 89.55%， 98.51% and 97.01% in the quadratic identification， respectively. The highest positive discrimination rate could reach 98.51% for the binary and quadratic identification models， and LS-SVM algorithm is both the optimal one， the most suitable kernel functions were chosen as radial basis function and linear kernel function， respectively. The optimal models discriminated well with no unclassified samples. ConclusionElectronic nose technology can accurately and rapidly identify Bletillae Rhizoma and its approximate decoction pieces， which can provide new ideas and methods for rapid quality evaluation of other decoction pieces.

[摘 要] 目的：探讨核因子κB抑制因子a（NFKBIA）表达与皮肤黑色素瘤（SKCM）患者预后及其与肿瘤微环境免疫浸润的相关性。方法：利用GEPIA2数据库分析正常皮肤和SKCM组织中NFKBIA的表达差异，GEPIA2和Ualcan数据库分析NFKBIA与SKCM预后关系，TIMER和TISIDB数据库分析NFKBIA与SKCM中TIL和免疫调节基因的关系。选用TISCH和CancerSEA数据库从单细胞水平分析NFKBIA与SKCM细胞亚群及其相关的功能状态关联性。选取湖北省荆门市第二人民医院保存的14例SKCM患者的石蜡组织标本，通过免疫组织化学染色法验证SKCM组织和癌旁组织中NFKBIA蛋白的表达水平。结果：NFKBIA在SKCM组织中呈低表达，并且低表达的SKCM患者预后差（P<0.05）。NFKBIA表达与B细胞、CD8+ T细胞、CD4+ T细胞、巨噬细胞、中性粒细胞和DC浸润水平呈正相关关系（均P<0.01）。NFKBIA表达与SKCM中TIL丰度和免疫调节基因呈正相关关系（均P<0.01）。NFKBIA在SKCM单细胞免疫细胞中表达，且与肿瘤微环境中细胞分化和炎症呈正相关关系（R=0.28、0.23，均P<0.05）。免疫组织化学染色结果证实，NFKBIA蛋白在SKCM组织中阳性表达率显著低于癌旁组织（35.71% vs 85.71%，P<0.05）。结论：NFKBIA在SKCM组织中呈低表达，与SKCM免疫细胞浸润相关，可作为SKCM预后的标志物及治疗靶点。

[摘 要] 目的：探讨解偶联蛋白2（UCP2）在皮肤黑色素瘤（SKCM）中的预后价值，分析UCP2表达与SKCM肿瘤浸润免疫细胞（TIC）之间的相关性。方法：通过GEPIA在线数据库分析SKCM组织及正常皮肤组织中UCP的差异性表达，探讨UCP表达与SKCM预后之间的关系。HPA数据库分析UCP2在正常皮肤单细胞中的表达情况，使用TISCH分析UCP2在SKCM中单细胞水平的表达情况。TIMER分析UCP2表达与总SKCM、原发性SKCM和转移性SKCM患者肿瘤微环境（TME）中主要免疫细胞及其标志物的相关性。结果：UCP2在SKCM癌组织中高表达，UCP2高表达患者的OS和DFS均长于低表达患者（均P<0.05）。正常皮肤和SKCM单细胞分析显示，UCP2表达与免疫细胞亚群存在一定的正相关，同时与SKCM中趋化因子、受体、组织相容性复合物、免疫抑制剂和免疫激活剂五类免疫途径密切相关（均P<0.05）。亚组分析结果显示，UCP2高表达与总SKCM和转移性SKCM患者高OS密切相关（均P<0.05）。UCP2表达与总SKCM、原发性SKCM、转移性SKCM患者TME中TIC之间存在明显的正相关（均P<0.05），但是与原发性SKCM相关性相对较弱。UCP2表达水平与3组SKCM患者TME中免疫细胞标志物存在明显的正相关（均P<0.05）。结论：UCP2在SKCM组织中高表达，UCP2与SKCM中TIC呈正相关，是TME中重要的调控因子，与其预后密切相关。