AIM:To improve accuracy of the diagnosis of primary conjunctival masses(PCM) through analyze the clinicopathological characteristics and pathogenic causes of 422 cases of PCM.METHODS:Clinical manifestations, histological characteristics and immunopheno types were reviewed.Relevant literatures were reviewed.RESULTS:Benign conjunctival masses were 403 cases (95.5%).Those included masses from squamous cell papilloma (71 cases, 17.6%), conjunctival cyst (68 cases, 16.9%), inflammatory masses (62 cases, 15.4%), pigmented nevus (60 cases, 14.9%), lipoma (58 cases, 14.4%).Malignant conjunctival neoplasms were 19 cases (4.5%).Those included tumors from B Cell Lymphoma (6 cases,31.6%), melanoma (6 cases,31.6%), and squamous cell carcinoma (5 cases, 26.3%).Different types of primary conjunctival masses were induced by the same cause.CONCLUSION:The pathological types of primary conjunctival masses are various and the majority of which is benign.For the diagnosis of primary conjunctival masses, morphological analysis, immunohistochemical examination shoud be combined to increase the diagnostic accuracy and decrease misdiagnosis rate.

Objective:To observe the changes of visual evoked potential(VEP)in diabetic rats and the influence of nerve growth factor(NGF)and aminoguanidine(AG)on VEP.Methods:Diabetes was induced in adult male Wistar rats with streptozotocin(STZ).Rats were divided into normal control group(CON),diabetes model group(DM).NGF-treated group(D +N)and AG-treated group(D+A).VEP was measured during the 3~(rd)month,6~(th)month,9~(th)month,and 12~(th)month.Results: Compared with the CON group,all rest groups had longer latencies and lower amplitudes(P

Objective To analyze the correlations between pediatric intersive cave unit (PICU) nurses′job satisfaction and their perception of job characteristics. Method One hundred and thirty-six PICU nurses from a women and children′s hospital of Guangzhou participated in the study and the job diagnostic survey (JDS) and Minnesota satisfaction questionnaire short-form (MSQ20) were used to investigate the relationship between the job characteristics and job satisfaction. Results The average score on general satisfaction was (3.57 ± 0.41). The dimensions like skill variety, task integrity, feedback from job and feedback from others, had a significant positive impact on general satisfaction (all P<0.05). Conclusion Nurses generally have a relatively middle level of job satisfaction and measures should be taken to improve their job satisfaction as well as the quality of nursing.

Background Diabetiretinopathy(DR) ione of the leading causeof blindness.To understand the risk factorof Dpathogenesiiimportanfothe prevention and treatmenof DR.Objective The purpose of thistudy wato survey the prevalence and relevanfactorof Damong diabetipatientaged ove45 yearold.Methodcross-sectional study wadesigned.physical examination waperformed on 7300 subjectfrom July,2010 to March,2011 athe FirsHospital of Shanxi Medical University,and 5012 of them received non-mydriatidigital funduphotography.Type 2 diabetimellituwadetermined in 574 subjects,and 480 casethaconformed to the criteriof the currenstudy were recruited.questionnaire survey wacarried ouin the 480 patients,and the prevalence of diabeteand Dwacalculated fothe analysiof the causative factorof DR.ResultGradable funduphotographwere available in 480 subjects,and 98 of them presented with Dcomplication aprevalence rate of 19.8％.The morbidity rateof Dwere 14.3％,19.4％,23.7％ and 21.5％ in the 45-55 yeargroup,＞55-65 yeargroup,＞65-75 yeargroup and ＞75 yeargroup,respectively,withousignificandifference among them (x2 =3.824,P=0.281).The incidence rateof Dwere 11.8％,13.2％,15.4％,27.0％ and 62.5％ in patientwith disease courseof lesthan 5 years,5-10 years,＞ 10-15 years,＞ 15-20 yearand ove20 years,respectively,with significandifference among differendisease duration(x2 =57.518,P =0.000).No significandifference waseen in the prevalence of Damong groupwith body weighindiceof ＜18.5,18.5-22.9,23.0-24.9 and ≥25.0 (16.7％,23.3％,16.8％,19.7％) (x2 =2.099,P =0.718) and differentreatmenmethod,such aoral antidiabetidrugs,insulin injection ocombination treatmen(18.8％,25.9％,19.8％,respectively) (x2 =1.477,P=0.478).The questionnaire survey showed close relevancy between gender,disease duration,fasting glucose concentration,family history of diabetes,and whethefunduexamination waperformed (P =0.025,0.000,0.001,0.003,0.039).ConclusionThe prevalence rate of Dwaassociated with the awarenesfodiabeteand treatmenmodes.Gender,disease duration,family history of diabetes,fasting glucose concentration and submission to eye examination are the independenrisk factorof DR.

Background Vascular endothelial growth factor(VEGF) has been shown to be associated with the pathogenesis of age-related macular degeneration (AMD),therefore VEGF is a target for the treatment of wet AMD.However,the mechanism of VEGF in the pathogenesis of AMD is not clearly understood.Studying the correlation between VEGF gene polymorphism and AMD is becoming a new research hotspot,but relevant studies on Han Chinese have not been performed.Objective This study was to investigate the association between the VEGF +936C/T gene polymorphism and AMD in the Chinese population.Methods A pilot prospective and nonrandomized controlled trial was designed.This protocol complied with Declaration of Helsinki and was approved by the Ethic Committee of Chinese PLA Second Artillery General Hospital.Written informed consent was obtained from each subject prior to entering the study.Two hundred AMD patients and 200 age-and gender-matched normal controls were enrolled in this study.The genomic DNA was extracted from the peripheral blood samples of the subjects,and analysis of the VEGF polymorphisms at the +936 position in the promoter and 3＇-untranslated regions was performed by the restriction fragment length polymorphism method.Frequencies of the VEGF+936C/T genotype were compared between the two groups,and the risk of the VEGF+936C/T gene polymorphism in pre-disposing AMD was evaluated.Results No significant differences were seen in the incidence rates of smoking(P ＝ 0.76),hypertension(P ＝ 0.84),hyperlipidemia (P=0.71),diabetes mellitus (P=0.86) and cardiovascular disease(P=0.89) between the AMD group and the normal control group,and BMI was matched between the two groups (P =0.18).The prevalence of the TT genotype was 9.0％ (18/200)in the AMD group,but that in the normal control was 3.5％ (7/200),showing a significant difference between the two groups (P =0.03).The odds ratio (OR) was 2.73 with a 95％ confidence interval(CI) of 1.11 to 6.68 for AMD in this genotype.The CC and CT genotypes were not significantly different between the two groups (P =0.52,P =0.57).The genotype frequency and allele frequency conformed to HardyWeinberg equilibrium law.There were no significant differences found in the CC,CT,TT genotype frequencies among the early AMD,geographic atrophy AMD and choroidal neovascular AMD (all at P＞0.05).Conclusions The VEGF+936TT genotype is associated with AMD in Han Chinese population.

Objective: Clone, express and purify human recombinant calreticulin (CRT). Methods: Human CRT cDNA was amplified from total RNA of human lung cancer cell line A549 cells by RT-PCR. Then, PCR product was subcloned into prokaryotic expression vector pET-15b. After sequencing, this recombinant plasmid was transformed into E.coli. Rossetta. Recombinant CRT was expressed in host cells by IPTG induction. Resulted protein was purified by Ni-NTA resin under denature condition and dialyzed to recover its native structure. SDS-PAGE and Western blot method were used to identify the expression and purification of reconbinant CRT. Results: Human CRT cDNA was cloned from total RNA of A549 cells. CRT prokaryotic expression vector pET-15b-crt was constructed. Reconbinant CRT was induced to express in E.coli and purified by Ni-NTA affinity chromatograph. Conclusion: A method for prokaryotic expression and purification of human recombinant CRT was successfully established. This method laid a foundation for the subsequent CRT research.

Objective: To optimize the prescription of rutaecarpine solid lipid nanoparticles (Rut-SLN). Methods: Using the film-ultrasound method to lining-up the Rut-SLN, with the entrapment efficiency (EE), Zeta potential, and the average particle size as the evaluation indexes, using central composite design to inspect the effects of glycerol monostearate/drug quality ratio (A), soybean lecithin for injection/glycerol monostearate mass ratio (B), Poloxamer 188 (C) on three factors of the EE, Zeta potential, and average particle size. Prediction and analysis for selecting the best prescription condition were carried out by using the response surface method. Results: According to the optimized prescription, the EE, Zeta potential, and the average particle size of Rut-SLN was respectively 84.27%, 122.6 nm, and -20.7 mV. Conclusion: The optimal prescription of Rut-SLN has better stability, feasibility, and high EE, which is suitable for the production.

Objective:To investigate the correlation between body composition and cardiovascular disease (CVD) in patients with chronic kidney disease (CKD).Methods:CKD patients who were hospitalized in the Department of Nephrology of Chongqing General Hospital from January 2017 to December 2019 and had complete clinical biochemical data were divided into CKD patients with CVD and CKD patients without CVD according to their medical history and corresponding auxiliary examinations. Clinical data were collected and anthropometric measurements were conducted. Skeletal muscle index (SMI), appendage lean mass/height 2, total body fat (TBF), visceral adipose tissue (VAT), bone mineral capacity, bone mineral density and et al, were measured by dual-energy X-ray absorptiometry. T test, U test and Chi-square test were used for statistical analysis. Logistic regression was used to analyze the relationship between body composition and CVD. Results:A total of 604 CKD patients were included in this study, including 560 patients (92.7%) with CKD stage 3, 44 patients (7.3%) with CKD stage 4, and 180 CKD patients with CVD (29.8%), 424 CKD patients without CVD (70.2%). Compared with CKD patients without CVD, the proportion of men, the proportion of hypertension, the proportion of diabetes, age, duration of CKD, systolic blood pressure, blood uric acid, waist to hip ratio and waist circumference were higher (all P<0.05), while low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol, and estimated glomerular filtration rate (eGFR) were lower in CKD patients with CVD (all P<0.05). In terms of body composition, SMI ( t=-11.964, P<0.001) and body mass index ( t=-4.462, P<0.001) in CKD patients with CVD were significantly lower than those in CKD patients without CVD, but VAT ( t=3.089, P=0.002) and TBF ( t=5.177, P<0.001) in CKD patients with CVD were significantly higher. After adjusting for confounders such as age, CKD duration, hypertension history, diabetes history, LDL-C, body mass index, eGFR, TBF, etc. by multivariate logistic regression analysis, the risk of CKD patients suffering from CVD increased significantly with the decrease of SMI [with SMI high tertile (36.37%-50.80%) as reference, SMI middle tertile (28.23%-36.31%): OR=1.49, 95% CI 1.24-1.71, P=0.003; SMI low tertile (15.28%-28.19%): OR=2.17, 95% CI 1.79-2.62, P<0.001], and VAT was not found to be associated with the risk of CVD in CKD patients ( P>0.05). Conclusion:Reduction of SMI is independently associated with CVD in CKD patients.

The influence of inner cell mass (ICM) and trophectoderm (TE) score on pregnancy outcomes in frozen-thawed blastocyst transfer cycles was analyzed. A retrospective analysis of 741 cycles of frozen-thawed blastosysts transfer was performed. All cycles were divided into four groups based on the number and morphological score of blastocysts: S-ICM B/TE B group (n=91), the single blastocyst transfer of ICM B and TE B; D-ICM B/TE B group (n=579), double blastocysts transfer of ICM B/TE B; D-ICM B/TE C group (n=35), double blastocysts transfer of ICM B/TE C; and D-ICM C/TE B group (n=36), double blastocysts transfer of TE B/ICM C. The pregnancy outcomes were compared among the four groups. As compared with D-ICM B/TE C group, the clinical pregnancy rate, implantation rate and multiple pregnancy rate were increased in D-ICM B/TE B group (74.96% vs. 57.14%, 57.43% vs. 37.14%, and 48.62% vs. 25%, respectively, P<0.05 for all). Clinical pregnancy rate and implantation rate in D-ICM B/TE B group were also higher than in D-ICM C/TE B group (74.96% vs. 50%, and 57.43% vs. 33.33%, both P<0.05). Multivariable Logistic regression analysis indicated that ICM score was a better predictive parameter for clinical pregnancy (OR=3.05, CI 1.70-5.46, P<0.001), while the trophectoderm score was a better one for early abortion (OR=0.074, CI 0.03-0.19, P<0.001). Clinical pregnancy rate and multiple pregnancy rate in S-ICM B/TE B group were significantly lower than those in D-ICM B/TE B group (46.15% vs. 74.96%, and 2.38% vs. 48.62%, both P<0.05), but there was no significant difference in the implantation rate between the two groups. It was suggested that the higher score of ICM and TE may be indicative of the better pregnancy outcomes. The ICM score is a better predictor of clinical pregnancy than TE, while TE score is a better one in predicting early abortion. Single ICM B/TE B blastocyst transfer in frozen-thawed cycles can also get satisfactory pregnancy outcomes.

Cell Line ; Cyclin-Dependent Kinase 5 ; metabolism ; Humans ; Lipopolysaccharides ; Microglia ; cytology ; drug effects ; metabolism ; Stilbenes ; pharmacology