Objective To verify the applicability of Lowry2 method[the second method of Folin-phenol method of Chinese Pharmacopoeia(VolumeⅢ,2020 edition)]for the determination of protein content of intermediate products of component pertussis vaccine.Methods The standard and sample were precipitated and pretreated with deoxycholate and trichloroacetic acid to remove impurities,and then reacted with Folin-phenol,and the absorbance was measured at 750 nm wavelength.The standard curve was drawn with the concentration and absorbance of the standard,and the sample concentration was calculated. The method was verified for the specificity,linearity,accuracy and precision,and used to detect the protein content of intermediate products of three batches of component pertussis vaccine.Results There was no significant difference between the protein content in background buffer of intermediate product detected by this method and that in ultrapure water(t = 0. 277～1. 178,P = 0. 304～0. 795);The linear relationship of standard curve was good at the protein concentration of 0～50 μg/mL,each R~2> 0. 98;The spike recovery of accuracy verification was in the range of 90%～110%;The RSDs of repeatability and intermediate precision verification were both less than 3%. The detection results of protein content in the intermediate products of three batches of component pertussis vaccine all met the requirements of internal manufacturing and verification regulations.Conclusion Lowry2 method has good specificity,accuracy and precision,and can be used to determine the protein content of component pertussis intermediate products,which provides a basis for the applicability of Lowry2 method.

Objective To investigate the radiographic characteristics of degenerative lumbar scoliosis (DLS) and its relationship to osteoporosis. Methods 229 cases (83 males, 146 females) of DLS from January 1998 to June 2005 were reviewed. The mean age was 56.8 years (ranged from 40 to 74 years). The Cobb angle and vertebral stability in coronal plane were measured in anteroposterior radiographs and the changes of lordosis in sagittal plane were observed in lateral radiographs. The bone mineral density(BMD) and T-Score of lumbar spine (L2-L4) were measured using Dual Energy X-ray Absorptiometry. Results The mean Cobb angle is 9.45??4.79?, 151 cases(66%) with the angle less than 10?, 60 cases (26%) with 10?-20?, and 18 cases (8%) with more than 20?. Right side scoliosis were found in 52% (120 cases), left side in 48% (109 cases). 159 cases (69%) companied with gradeⅠ(Nash-Moe) vertebra rotation, 54 cases (24%) with grade Ⅱ. And the vertebra rotation was most evident on scoliosis apex. There were 20 cases (9%) with more than 4 mm lateral translation between the lumbar vertebrae which were usually the apex vertebrae with the most degenerative changes. The physical lordosis decreased in most cases in which 16 cases (7%) developed lumbar or thoracolumbar kyphosis. And the kyphosis degree was not relevant to scoliosis Cobb angle. The mean T-Score of BMD measurement was -1.88?0.17, which was -1.49?0.14, -2.56?0.24, -2.89?0.50 for the groups of with Cobb angle 20? respectively. There were 153 cases (67%) with T10?), and 98 cases (43%) with T

Objective To investigate the effects of transforming growth factor-?1(TGF-?1), fibroblast growth factor-2 (FGF-2), platelet derived growth factor-bb(PDGF-bb) and hepatocyte growth factor(HGF) on adult human articular chondrocytes(AHAC) proliferation and phenotype maintaining. Methods Isolated AHAC were cultured in DMEM/F-12 supplemented with 10% human AB serum, 50 ?g/ml ascorbic acid-2-phosphate, 0.4 mmol/L proline, 5 ?g/ml insulin and 1 mmol/L non-essential amino acids (NEAA). The cells of 2nd passage were used for proliferation kinetics studying: 2.0?103 cells/well were seeded on 96-well plate, 24 h later, the cells were stimulated with various growth factors or combinations of these growth factors respectively, and the proliferation kinetics were analyzed by MTT colorimetric method. The passaged chondrocytes' phenotype were assessed by safranine O staining and immunostaining for type Ⅰ,Ⅱcollagens and aggrecan. Results All four growth factors: FGF-2, TGF-?1, PDGF-bb and HGF, could promote the proliferation of AHAC, and the optimal concentrations,when used separately, were 50 ng/ml, 1 ng/ml, 1 ng/ml, 20 ng/ml respectively. While 5 ng/ml FGF-2 combined with 1 ng/ml TGF-?1 could achieve the best proliferation effect, additionally adding PDGF-bb, HGF or both could not enhance more. With the combination of FGF-2 and TGF-?1, the AHAC could expand over 2000-fold and passage over 10 times. Chondrocytes of 9th passage still excreted type Ⅱcollagen and glycosaminoglycan(GAG). Conclusion 5 ng/ml FGF-2 combined with 1 ng/ml TGF-?1 is a very appropriated circumstance for in vitro expanding of AHAC.

Phenols are organic pollutants of high priority concerns because of their toxicity and possible accumulation in the environment. It is important to treat and recover phenols from wastewater economically and effectively. In this paper,the source and harm of phenolic wastewater were introduced. The situation and progress in treatment process of phenolic wastewater,including absorption,extraction,oxidation process,and biological treatment are also summarized. The characteristics,main problems ,area and further application of each treatment process are pointed out. The developing trend on combination treatment of phenolic wastewater is further described.

Objective To observe the histological features of muscular layers in different parts of esophagus of patients with achalasia (AC) and to explore the distribution and function of eosinophils in esophageal muscular layer in patients with AC.Methods From June 2015 to February 2016,21 patients diagnosed with AC by endoscopy,barium meal and esophageal high resolution manometry,accepted peroral endoscopic myotomy (POEM) were enrolled.At the same period,nine patients with esophageal carcinoma who received esophagectomy were selected as controls.Muscular tissues of lower esophageal sphincter (LES),distal esophagus (5 cm above LES) and middle esophagus (10 cm above LES) of patients with AC and controls were taken for regular haematoxylin-eosin (H-E) staining to analyze degree of eosinophils infiltration.Nonparametric analysis and Chi-square analysis were used for statistical analysis.Spearman correlation analysis was used for analyzing correlations.Results The results of H-E staining indicated that different degree of eosinophil infiltration was found in 18(85.7％) patients with AC,and eosinophil counts in muscular layer were over 15 per high power field in five patients with AC (23.8％,5/21).However,no eosinophils infiltration was found in esophageal carcinoma patients.Median numbers of eosinophil in muscular layer of LES,distal esophagus and middle esophagus were all higher than those of esophageal carcinoma group (4.0,2.0 to 10.0 vs 1.0,0 to 1.5;4.0,1.0 to 17.0 vs 1.0,0.5 to 1.5；6.0,0.5 to 15.0 vs 0,0 to 1.0),and the differences were statistically significant (Z=2.997,2.476 and 2.504,all P＜0.05).The distribution of eosinophils in muscular layer of LES,distalesophagus and middle esophagus between the two groups were statistically significant (x2=2.710,2.543and 2.313,all P＜0.05).The differences in eosinophils distribution in muscular layer of LES,distal esophagus and middle esophagus in patients with AC were not ststistically significant (x2 =0.110,P＞0.05).Additionally,number of eosinophils in muscular layer of different parts of esophagus was not correlated with age and disease course (r=0.434 and 0.639；P =0.282 and 0.088).Conclusion The wide distribution of eosinophils in muscular layer of esophagus in patients with AC may involve in the genesis and development of AC.

Objective To observe the clinical effect of Xiaoke-Yuzu decoction on diabetic peripheral neuropathy (DPN). Methods A total of 100 DPN inpatients were recruited and randomly divided into the treatment and control groups. The two groups were both received basic therapy, while the treatment group additionally received Xiaoke-Yuzu decoction. Toronto clinical scores and Chinese medicine symptom scores of both groups were collected to evaluate the clinical effect before and after the therapy. Results The Toronto scores of treatment group were significantly lower than control group after treatment (symptoms score 1.50 ± 0.94 vs. 2.23 ± 1.01, reflection score 3.60 ± 1.77 vs. 4.27 ± 1.72, feeling test score 1.53 ± 0.63 vs. 2.10 ± 0.84,all P<0.05). Meanwhile, the Chinese medicine symptom scores of treatment group were also significantly lower than the control group (main symptom score 1.77 ± 1.17 vs. 3.17 ± 1.82, posterior symptom score 2.23 ± 1.59 vs. 4.27 ± 1.57, the tongue and pulse score 1.83 ± 0.65 vs. 2.47 ± 0.51, all P<0.05). Conclusion Xiaoke-Yuzu decoction plus basic therpy could improve the clinical symptoms of DPN patients.

Kasai portoenterostomy is the preferred treatment for biliary atresia. Age at Kasai portoenterostomy is an important factor affecting the prognosis of children with biliary atresia and avoiding liver transplantation. Choosing the appropriate surgical age, restoring good bile drainage, improving the native liver survival rate, and avoiding early liver transplantation are the items that clinicians have always been working on. The age at Kasai portoenterostomy was correlated with the jaundice clearance rate, native liver survival rate, and the incidence of postoperative cholangitis. This article systematically reviewed the research advances on the relationship between age at Kasai portoenterostomy and prognosis for biliary atresia, aiming to provide the basis for the ideal surgical age of Kasai.

Objective To study the development and utilization of Li medicine resources in Hainan Province, analyze the existing problems and present specific suggestions for the rational exploitation and utilization of Li medicine resources.Methods SWOT analysis was carried out on the development and utilization of Li medicine in Hainan by means of literature analysis and field survey.Results The advantage of Li medicine lies in its long history and sufficient resources.The complicated ethnic factors within Li nationality hindered the development of Li medicine and resulted in the lack of basic research.Although the relevant policies and market demands have brought opportunities for the development of Li medicine, the rapid development of society may pose a potential threat to the development and protection of Li medicine resources.Conclusion The unique advantages of Li medicine ought to be used to create Li medicine brand.While Hainan is building its international tourism island, the health benefits of Li medicine should be promoted.Through the creation of Li medicine schools or departments, new professionals need to be trained to continue the development and utilization of Li medicine.

Monoclonal antibodies ( McAb ) , a rapidly expanding class of therapeutic biological products, have been widely used in the treatment of various diseases. Although antibodies have shown tre-mendous clinical value, the breadth and complexity of human diseases urge researchers to constantly develop new drugs with new modes of action rather than to confine them to monoclonal antibodies alone. Fc fusion proteins are becoming a new research hotspot and have shown great potential in the treatment of many human diseases. At present, Fc fusion proteins on the market usually take the interaction between receptors and lig-ands as the main guiding strategy to develop more safer and effective clinical drugs. This article mainly fo-cused on the ligand-receptor interaction as the drug design strategy and the application. of Fc fusion pro-teins.

Objective To explore the risk factors of early traumatic coagulation(TIC)in elderly patients with chest trauma.Methods The data of 113 elderly patients with chest trauma admitted in a hospital from January 2016 to January 2022 were retrospectively analyzed.Patients were divided into TIC group and non-TIC group according to whether they had early TIC.The risk factors of early TIC in elderly patients with thoracic trauma were analyzed by single factor and multi factor methods.Analysis of the predictive value of early TIC in elderly patients with thoracic trauma using multifactor model.Result Of all the patients included in the study,27 were determined as TIC,and the rest 86 were non-TIC.The results of univariate analysis showed that there were statistically significant differences in the data of shock index,platelet count at admission and plasma fibrinogen at admission between patients in TIC group and non-TIC group(P＜0.05).Multivariate analysis showed that the shock index at admission,platelet count at admission,and plasma fibrin at admission were all independent influencing factors of early TIC in elderly patients with chest trauma(all P＜0.05).The P value of multivariate model and independent variables predict the early TIC of elderly patients with chest trauma.The Yoden index is 36.95％,42.89％,75.58％and 78.85％respectively.Conclusion The shock index,platelet count and plasma fibrin at the time of admission can affect the early occurrence of TIC in elderly patients with chest trauma.