Objective Concluding the clinical feature and prognosis of primary testicular lymphoma to improve the understanding of this disease.Methods During 1995 and 2010,17 cases of primary testicular lymphoma treated in Beijing Friendship Hospital of Capital Medical University were retrospectively analyzed of its clinical features,diagnosis,treatment and prognosis.Results Seventeen patients with a mean age of 68 years complained the testicular sohd mass as their first symptoms.The mean tumor diameter was 4.7 cm,and all patients underwent orchidectomy,and testicular non- Hodgkin's lymphoma was confirmed by pathologic examination.Fourteen cases were diffuse large B cell type and 3 cases were anaplastic large cell type.The clinical stage of all the patients was IE.Fourteen cases were followed up (3 cases were lost)with mean follow-up time of 37.8 months by outpatient interview and telephone,all patients were treated with CHOP chemotherapy,and some of them were combined with rituximab and preventive lowdose pelvic radiotherapy.Five cases died of other chronic medical complications,1 case with contralateral testicular metastasis received surgery again.There were 9 tumor free survival cases in total.Conclusion Primary testicular lymphoma is rare and more common in older men.Postoperative pathologic diagnosis is gold standard.The systemic treatment and individual therapy is the first choice for primary testicular lymphoma.

Objective:To investigate the clinical efficacy and patient and partner's satisfaction with penile prosthesis implantation(PPI) for treating Chinese patients with severe erectile dysfunction(SED).Methods:One hundred and sixty-eight SED patients were successfully treated by PPI from July 2000 to June 2010.Of the 146(86.9%) patients who had been followed up over 6 months post-operation,36(24.7%) had been implanted with one piece malleable prosthesis(AMS650) and 110(75.3%) with three piece inflatable prosthesis(AMS700CXM).All the patients had been followed up by using international index of erectile dysfunction(IIEF5),Quality of Life Score(QOL) for evaluating clinical efficacy and using Visual Analogue Scale(VAS) for evaluating patient and partner's satisfaction and the duration of the follow-up was 6 to 119 months.Results:The mean age of patients was 35.9?12.1 years(20 to 75 years),All the operations were successful and sexual intercourse with PPI was performed post 4 to 6 weeks without severe complications like infection and erosion.The prosthesis survive rate and frequent sexual intercourse rate were 98.6% and 87.7% respectively.IIEF5 scores pre and post PPI were 6.3?1.7 and 21.3?1.6 respectively,the QOL scores pre and post PPI were 5.1?0.9 and 1.5?0.5 respectively,and both of them showed significant improvement(P

Objective:To discuss the effects of recombinant IFN-α-IL-18 fusion protein on chicken lymphocyte transformation and the chicken nuclear factor kappa B ( NF-κB ) activity.Methods: The recombinant plasmids pPICZ-IFN-α, pPICZ-IL-18 and pPICZ-IFN-α-IL-18 were constructed,and transformed into P.Pastoris X-33 strain by electroporation.The recombinant proteins were ex-pressed under the induction of 1% methanol,and detected by SDS-PAGE and Western blot.The biological activities of the expressed products were detected by the lymphocyte transformation test,the NF-κB concentration in chicken lymphocyte and lymphocytic nucleus were detected at different times with ELISA.Results:SDS-PAGE and Western blot showed that the expressed products existed in super-natant,and the molecular weights were about 22 kD,23 kD and 43 kD,respectively.The expressed products IL-18 and IFN-α-IL-18 could stimulate chicken lymphocyte transformation (P<0.05),the biological activity of IFN-αstimulating lymphocyte transform was feeble (P>0.05).Compared with the control group,the total NF-κB concentration in chicken lymphocyte induced by IL-18 and IFN-α-IL-18 were increased (P<0.05),and the NF-κB in lymphocytic nucleus was increased significantly (P<0.01).Otherwise,the total NF-κB in lymphocyte induced by IFN-αincrease was limited (P>0.05),but the NF-κB in lymphocytic nucleus showed the remarkable increase ( P<0.05 ) .Conclusion: IFN-α-IL-18 and IL-18 can promote lymphocyte transformation significantly, the activity of IFN-αinduced lymphocyte transformation is imperfect.The biological activity of stimulating lymphocyte transformation is associated with the NF-κB expression,activation and nucleo-cytoplasmic transport.The study built foundation for the function of IFN-α-IL-18 fusion protein and the exploration of the role of controlling epidemic diseases.

AIM:To discuss the effect of Shenmai injection on insulin resistance ( IR) in 3T3-L1 cells and its mechanisms.METHODS:3T3-L1 preadipocytes were induced by chemical reagents to differentiate into fully differentiated adipocytes.Oil red O staining was used to detect the differentiation level of the adipocytes .The insulin-resistant 3T3-L1 cell model was demonstrated using insulin , which was confirmed by glucose concentration in cell supernatant .The IR cell model was given 10 μmol/L rosiglitazone , 25 and 50 g/L Shenmai injection and normal saline for comparison .MTT assay was used to assess the cell activity of 3T3-L1 cells which was treated with drugs for 8, 16, 24 and 36 h.Glucose oxidase method was used to detect the glucose concentration in the cell supernatant at 8, 16 and 24 h.The protein levels of glucose transporter-4 (GLUT4), phosphatidylinositol 3-kinase (PI3K), AKT and p-AKT were determined by Western blot .RE-SULTS:3T3-L1 adipocytes were successfully induced as shown by the positive oil red O staining .The IR cell model was demonstrated , and glucose concentration in the cell supernatant after treatment with Shenmai injection showed that Shenmai injection reduced the IR in 3T3-L1 cell model.The protein levels of GLUT4, PI3K and p-AKT increased compared to con-trol group.CONCLUSION:Shenmai injection reduces the IR in 3T3-L1 cell model, which functions by increasing the protein levels of GLUT4, PI3K and p-AKT.

Background The use of heating and ventilation air conditioning (HVAC) in public places is conducive to improving indoor air quality and increasing the users comfort level. However, HVAC may also become potential carriers of indoor airborne microbial contamination. Objective To understand the characteristics of microbial pollution and distribution of related pathogenic microorganisms in HVAC of star-rated hotels, and to provide a basis for effective control of such pollution. Methods According to the requirements of the Hygienic specification of central air conditioning ventilation system in public buildings (WS 394-2012), two sets of HVAC in two star-rated hotels (A and B, inaugurated in 2002 and 1998, respectively) in the central area of Shanghai were randomly selected on September 9, 2020 for the hygienic evaluation of microorganisms in the air supply and respirable particulate matter (PM₁₀) in the air supply, dust accumulation and microorganisms on the inner surface of the ducts, as well as Legionella pneumophila in cooling water and condensate water. At the same time, 3 samples from the inner surface of ducts, 1 sample from the surface of the filter, 1 sample from the condensate, and 1 sample from the cooling water were collected from each set of HVAC, a total of 12 sample from 2 sets of HVAC, for Illumina HiSeq metagenomic sequencing，and the samples are divided into 3 groups according to their types: duct group, filter group, and water sample group. The α-diversity indices (Shannon index, Simpson index, Chao1 index, ACE index, and goods_coverage index) were calculated to reflect the microbial community composition; and the β-diversity of the three groups were studied by principal component analysis to determine the similarity of the microbial communities. Results The maximum total number of bacteria and fungi in the air supply of the HVAC were 1158 CFU·m⁻³ and 344 CFU·m⁻³ for Hotel A respectively; and 2000 CFU·m⁻³ and 532 CFU·m⁻³ for Botel B respectively. β-hemolytic streptococci were negative in all samples; the respirable particulate matter, microorganisms and dust accumulation on the inner surface of air ducts, Legionella pneumophila IN cooling water and condensate samples all met the standards. The results of Illumina HiSeq sequencing showed that a total of 17322 microorganisms were reported in the 12 samples, with bacterial microbiota accounting for 97.31% of the classified genes and the remaining 2.69% were from fungi, viruses, and parasites. At the species level, Staphylococcus epidermidis, Pseudomonas, Alternaria, and Malassezia were the dominant microbial taxa measured in this survey. The results of α-diversity analysis showed that the values of Shannon index, Simpson index, and Chao1 index for the three groups of samples were duct > filter > water sample. The goods coverage indices of all sample groups s were close to 1. The principal component analysis showed that the contributions of two principal components were 19.27% and 14.25%, respectively, in which the samples of the filter and duct groups were better clustered into one category. Conclusion The overall hygiene conditions of the two hotels are good, except for the serious microbial contamination in the air supply of HVAC. Metagenomic sequencing reveals complex microbial communities of HVAC, including bacteria, fungi, viruses, and parasites. The species composition vary by sample groups, particularly the species compositions of the samples from filters and ducts are close and dominated by pathogenic microorganisms of human origin, suggesting that the potential biosafety hazards of HVAC should not be ignored.

Objective:To investigate the prevalence of physical violence against children (PVAC)by parents and to explore possible related factors.Methods:In two primary schools in Liaoning Province,1164 parents of pupils in grade 1 to 6 were surveyed by a self-administered questionnaire anonymously to analyze situation about PVAC and related factors.PVAC was defined as having one or more following parent-to-child behaviors in the past three months:push,or shook a child;pinch,screw,or scratch a child;hit child's buttocks with hand;hit child's hand,foot,arm,leg or back with hand;hit child's buttocks with an object;hit child's face or head with hand;hit elsewhere (not buttocks)with an object;kicked a child with a foot or hit with a fist.Results:Of 1164 parents,53.1% reported that they had minor PVAC (51.0%)or/and severe PVAC (19.8%).Multivariate logistic regres-sion analysis indicated that following factors increased the risk of PVAC:child's male gender (OR =1.49),younger age of children (OR =1.38),poor school performance of children (OR =1.85 ),mother (OR =2.09),parents'childhood physical violence victimization experiences (OR =1.53),parents'supportive or tolerant attitudes towards corporal punishment (OR =3.15),parents'lower awareness of the harmfulness of physical violence against children (OR =2.31),and lower social economic status (OR =1.47).Conclusion:The PVAC by their parents may be com-mon in the present study.Parents'supportive or tolerant attitudes toward corporal punishment and low awareness of the harmfulness of physical violence is the main risk factors of PVAC.

Objective: This study was designed to evaluate the impact of a schoolbased child sexual abuse (CSA) prevention education on knowledge and skills of schoolaged children in a rural area of China, and to provide a reference for conducting CSA prevention program in the rural area in the future. Methods: Three hundred and sixtyfive schoolage children, recruited from grade 2-5 in 2 rural schools of northeast China, were assigned to a CSA prevention education group or a control group by class. CSA prevention education was implemented by school teachers. Questionnaire surveys were conducted before and after the intervention. To evaluate intervention impact on students’ knowledge and skills, ttest was used to compare scores increment in knowledge and skills between intervention group and the control group. Results: The findings showed that scores in CSA prevention knowledge and skills among children in both groups was significantly improved after intervention. The increment of knowledge and skill scores in intervention group was 3.49 and 1.99, respectively, significantly higher than that of control group(1.05 and 1.11). Conclusion The present study shows that school CSA prevention education is helpful to improve children’s knowledge and skills of personal safety in the rural area. Schoolbased CSA prevention education methods and evaluation methods needs to be further improved.

Stem cell transplantation has great potential in the treatment of ischemic stroke, and bone marrow mesenchymal stem cells (BMSCs) are the most widely studied. Studies have shown that BMSCs mainly perform their functions in a paracrine manner, and the exosomes released by BMSCs show biological activities similar to BMSCs. As a cell-free therapy, BMSCs exosomes have made a lot of progress in the field of ischemic stroke. This article reviews the research progress of BMSCs-derived exosomes in the treatment of ischemic stroke.

Objective: To investigate the determinants affecting the heart rate deceleration capacity (DC) in patients with dilated cardiomyopathy (DCM). Methods: One hundred patients with DCM (DCM group) and 202 healthy subjects (control group) were respectively enrolled. Echocardiography and 24 hours electrocardiogram were performed in all subjects. DC value was compared between the two groups. Multiple regression analysis was made to evaluate the related determinants of DC ((age, sex, echocardiographic parameters including the left atrial diameter (LAD) and left ventricular ejection fraction (LVEF)). Results: (1) DC value was significantly lower in DCM group than in control group( (4.40±2.03) ms vs. (7.30±1.81) ms, P<0.01), prevalence of DC value≤4.5 ms was significantly higher in DCM group than in control group (62% vs. 6%, P<0.01). (2) DC value in the DCM group decreased in proportion to increasing LAD dimension, DC value was (5.60±2.04) ms, (4.50±2.07) ms and (3.60±1.62) ms (P<0.05) in DCM patients with LAD≤40 mm, 40 mm50 mm, respectively. (3) DC value in the DCM group was negatively related to the LAD (r=-0.366, P<0.01), positively related to the LVEF (r= 0.241, P<0.01), but not related with age and sex. Multiple factors regression analysis showed that increased LAD was related to the reduced DC values independtly. Conclusion DC value of the patients in the DCM group is decreased, which indicate the decrease of the vagus nerve tension, and increased LAD is related to the reduced DC value independtly in DCM patients.

Objective To investigate the prevalence of psychological violence against children by parents and to explore possible influencing factors.Methods In two primary schools from a city,located in the northeast part of China,1 164 parents of the pupils from grade 1 to 6,were anonymously surveyed by a self-administered questionnaire,to analyze the situation of psychological violence and influencing factors.Results Of the 1 164 parents,78.1％ reported that they practised psychological violence towards their children.Compared with girls,boys were more psychologically maltreated by their parents (81.3％ vs.74.7％,P＜0.01).Data from the multivariate logistic regression analysis indicated that following factors increased the risk of psychological violence against children:child being male (OR=1.684);initiated by the mother (OR=1.640),parents experiences of psychologically violent victimization (OR=2.064) during their childhood,supportive or tolerant attitudes towards corporal punishment (OR=2.618) from the parents,low awareness of the harmfulness of psychological violence against children (OR=1.666) of the parents,and lower social economic status (OR=1.745) of the family,etc.Conclusion Psychological violence experienced by the parents appeared very common.Prevention programs on psychological violence should be strengthened to increase the awareness of parents on this serious problem.