Cultured T.vaginalis was used for the anti-trichomonas test at different times,concentrations of propolis and densities of the parasites.After being cultured for 0,6,12,24 hrs,the survival rate of the parasites was(91.50?3.11)%,(43.00?6.83)%,(22.25?5.32)% and(11.50?5.74)% respectively with a significant difference between propolis group and the control.Under the concentrations of 0.24,0.48,0.96,1.92,3.84 and 7.68(mg/ml) with 24 hrs culture,the survival rate was(88.00?5.29)%,(92.67?4.16)%,(90.0?6.00)%,(84.00?4.00)%,(2.67?1.15)%,and 0 respectively.The results showed that propolis possesses clear in vitro anti-trichomonas activity which is relevant to the duration of culture and the concentration of the agent.

ObjectiveTo explore the efficiency of N,N-diethyl-m-toluamide (DEET) with different concentrations in prevention of Schistosoma japonicum infection in mice.MethodsKunming-mice were randomly divided into four groups for the application of the vaseline ointment with different DEET concentrations (0,10%,20% and 30%). After the abdominal skin of the mice were smeared with those DEETs above mentioned and dipped into water for 10,30 min,1,2 h and 4 h, the mice were infected with (505) cercariae respectively. After infected for 6-7 weeks, all of the mice were sacrificed,and by perfusing heart the worms were collected and counted.Worm reduction rates were calculated and the rank sum tests were carried out. ResultsAt the time points of 1,2 and 4 h , the worm reduction rates were 78.34%,63.15% and 40.23% for 10% DEET vaseline ointment, 98.61%,93.37% and 75.74% for 20% DEET vaseline ointment and 100.00%,98.61% and 93.07% for 30% DEET vaseline oinment respectively(H =10.06,10.84,10.80,all P

Objective To explore the inhibition effects of epidermal growth factor receptor (EGFR) antagonist monoclonal antibody cetuximab (C225) on breast cancer stem cells in human breast cancer cell line MCF-7.Methods The effects of C225 on the proliferation of breast cancer cell line MCF-7 were detected by MTT assay. MCF-7 cells were cultured to generate primary mammospheres, and were divided into control group, C225 group, epidermal growth factor (EGF) group and EGF + C225 group according to whether or not the culture media contained exogenous EGF and C225.Thirteen days after culture, the volume and number of mammospheres of these four groups were observed, and mammosphere-forming efficiency ( MFE) was calculated. The percentages of CD44~+ CD24~- cells in mammospheres of these four groups and in routinely cultured MCF-7 cells were determined by flow cytometry. Results The inhibition rate on MCF-7 cells increased with the concentration of C225.Compared with control group, the volume of mammospheres in C225 group significantly decreased, and MFE and percentages of CD44~+ CD24~- cells in mammospheres significantly decreased [(0.61 ±0.04)% vs (1.44±0.09)%, P<0.01; (3.50±0.29)% vs (9.07 ±0.52) % , P<0.01]. Compared with EGF group, the volume of mammospheres in EGF + C225 group significantly decreased, and MFE and percentages of CD44~+ CD24~- cells in mammospheres significantly decreased [ (0.68 ± 0.04) % vs (1.61 ± 0.05) % , P < 0.01; (4.00 ± 0.58) % vs (10.47 ± 0.79) % , P < 0.01]. The percentage of CD44~+ CD24~- cells in routinely cultured MCF-7 cells was (2.03 ±0.15) % , and was significantly different from those in EGF group and control group (P < 0.01). There was no significant difference in volume of mammospheres, MFE and percentage of CD44~+ CD24~- cells in mammospheres between EGF group and control group (P >0.05). Conclusion C225 has significant inhibition effects on CD44~+ CD24~- cells in MCF cells.

Objective To investigate the role of renal nerve in cardioprotection provided by renal ischemic preconditioning(RIP).Methods The effects of ischemia-reperfusion and RIP on the hemodynamics, myocardial oxygen consumption, epicardial electrography and infarct size were examined in anesthetized rabbit.Results During the 45 min of myocardial ischemia and 180 min of reperfusion, all hemodynamic parameters and myocardial oxygen consumption decreased progressively significantly. Epicardial electrographic ST-segment was elevated significantly during myocardial ischemia and return to baseline progressively in the course of reperfusion. The myocardial infarct size occupied 55.80±1.25% of area at risk,and RIP significantly reduced the myocardial infarct size to 36.51±2.80%(P＜0.01). The renal nerve section (RNS) per se didn't affect myocardial infarct size produced by ischemia-reperfusion, while cardioprotection afforded by RIP was completely abolished by RNS.Conlusion RIP have the protective effect on heart, and activation of renal afferents by transient ischemia-reperfusion play an important role in such a cardioprotection.

Objective To compare the effica cy of three N,N-diethyl-m-toluamide (DEET) formulations against Schistosoma japonicum infection in mice. Methods Three 10% DEET formulations (DEET isopropanol solution,DEET cr eam and DEET vaseline ointment)were prepared and two experiments, no-dipping or dipping after applying DEET preparation ,were designed. In each experiment, mice were randomly divided into three experiment groups and three control groups . D ifferent DEET preparations were applied in the experiment groups and isopropanol solution, “yumeijing” cream , vaseline ointment were applied in the control g roups, respectively. At different time points after skin application (0.5, 1, 2 , 4 h and 8 h),the mice were infected with (50?5) Schistosoma j apon icum cercariae on the abdominal skin in no dipping experiment. I n dipping experiment,after mice skin were applied and were dipped for 10,30 min, 1 ,2 h and 4 h, respectively, the mice were infected with (50?5) cercariae. Af ter 6-7 weeks ,all the mice were sacrificed and the worms were collected by hea rt perfusion and counted.Worm reduction rates were calculated and rank sum tests w ere carried out. Results In no-dipping experim ent,three DEET formulations provided 100.0% protection in mice at least for 1 h .A t 2 ,4 h and 8 h ,the worm reduction rates were 94.8%,89.9% and 13.3% for DE ET isopropanol solution, 100.0%,97.8% and 50.7% for DEET cream and 100.0%,9 9.0% and 9 8.0% for DEET vaseline oinment, respectively. In dipping experi-ment, given 50.0% wor m reduction rate as efficient in preventing penetration by the cercariae, the e ffective times were 10 min for DEET isopropanol solution,30 min for DEET cream a nd 2 h for DEET vaseline oinment,respectively. Conclusion Three DEET formulations are effectiv e in preventing Schistosoma japonicum infection in mice.DEET vaseline oinment can provide better protection than the other two D EET formulations.

Objective: To investigate the prevalence of hypertension among primary and middle school students living in Suzhou City, Jiangsu Province, so as to provide insights into comprehensive hypertension control among children and adolescents. Methods: Primary and middle school students at ages of 7 to 17 years were recruited for a questionnaire survey in Suzhou City using the stratified cluster random sampling method from September to December, 2020, and the height and body weight were measured. Blood pressure was measured at three separate clinic visits according to the national criteria Reference of Screening for Elevated Blood Pressure among Children and Adolescents Aged 7-18 Years ( WS/T 610-2018 ), and the detection of elevated blood pressure was estimated at three separate visits. In addition, factors affecting elevated blood pressure were identified. Results: A total of 3 713 students were enrolled, including 1 924 boys ( 51.82% ) and 1 789 girls ( 48.18% ). The detection of elevated blood pressure was 13.63%, 5.36%, and 3.37% at three separate visits, respectively, and the prevalence of hypertension ( elevated blood pressure at all three visits ) was 3.37%. The detection rates of elevated blood pressure were all higher at three visits ( 16.90%, 8.40%, and 5.26% ) among students at ages of 12 to 17 years than among students at ages of 7 to 11 years ( 9.65%, 1.67%, and 1.07%, P<0.05 ). The detection of elevated blood pressure was significantly higher in boys ( 15.23% ) than in girls (11.91%) at the first visit ( P<0.05 ), while no significant differences were seen at the second or third visit ( P>0.05 ). In addition, higher detection rates of elevated blood pressure were seen in obese ( 27.62%, 11.51%, and 7.06% ) and overweight students ( 17.45%, 6.95%, and 4.85% ) than in students with normal weight ( 9.44%, 3.54%, and 2.15% ) at all three visits, and greater detection rates of elevated blood pressure were found in obese students than in overweight students at the first and second visits ( P<0.017 ). Conclusions The prevalence of hypertension was 3.37% based on three separate visits among primary and middle school students in Suzhou City. Measurement of blood pressure at three separate visits within different days is effective to reduce the false positive rate of hypertension and decrease misdiagnosis among children and adolescents.

: To assess the relationship between high blood pressure (HBP) and body mass index (BMI), waist circumference (WC), and waist-height ratio (WHtR) among children and adolescents in Suzhou. Methods: A total of 3 150 children and adolescents aged 7-17 years were enrolled through stratified cluster sampling from September to October, 2019. Questionnaire survey was conducted, and height, weight, WC and BP were measured to calculate BMI and WHtR, relationship of HBP and adiposity indicators were evaluated. Results: The prevalence of HBP was 11.3%, overweight/obesity rate was 28.5%, and centrality obesity based on WC and WHtR was 20.6% and 23.7%, respectively. There were significant relationships between HBP and BMI, WC, and WHtR (χ2=157.80,105.87,124.17,P<0.01). As Logistic regression showed, compared to normal weight group, overweight/obesity based on BMI had positive relation with HBP (OR=3.89, 95%CI=3.09-4.90); compared to normal WC/WHtR, centrality obesity showed positive association with HBP (WC: OR=3.05, 95%CI=2.41-3.86; WHtR: OR=3.35, 95%CI=2.67-4.21). Meanwhile, BMI had joint effects on HBP with WC/WHtR. Specifically subjects with overweight/obesity and center obesity had higher risk of HBP, compared to normal BMI and WC subjects(OR=4.28, 95%CI=3.31-5.53). Conclusion Significant relationships between HBP and BMI, WC, and WHtR were found. BMI had joint effects on HBP with WC/WHtR. Keeping normal body weight and WC/ WHtR would have significant effects on HBP.

Objective To explore heterogeneous subtypes of psychological and behavioral adaptation characteristics of pediatric recipients after liver transplantation and the characteristics differences of different types of children after liver transplantation. Methods Seven hundred and forty-one children who underwent living-related liver transplantation were enrolled. The self-designed general information questionnaire, Chinese version of 5-Item World Health Organization Well-Being Index (WHO-5) and the parent-report version of the Strengths and Difficulties Questionnaire (SDQ) were filled out by their guardians. The scores of five dimensions of SDQ were used as the manifest variables of the model. The classification model of psychological and behavioral adaptation characteristics of pediatric recipients after liver transplantation was constructed by latent profile analysis. The latent categories of psychological and behavioral adaptation characteristics of pediatric recipients after liver transplantation were analyzed. The influencing factors of latent categories were analyzed by univariate analysis and logistic regression model. Results There were three latent categories of psychological and behavioral adaptation characteristics of pediatric recipients after liver transplantation, including peer communication problem group (n=302), psychological and behavioral adaptation group (n=145) and psychological and behavioral adjustment difficulty group (n=294). The first two groups were merged into the psychological and behavioral health group (n=447), which had significant differences in the five dimensions and the total score of difficulties of SDQ compared with the psychological and behavioral adjustment difficulty group (n=294) (all P<0.001). Logistic regression analysis showed that age≤5 years old, primary disease of non-cholestatic liver disease, stem family were the risk factors for psychological and behavioral adjustment difficulties in pediatric recipients after liver transplantation. Female gender, high education levels of parents and high WHO-5 score of guardians were the protective factors for psychological and behavioral adjustment difficulties in pediatric recipients after liver transplantation (all P<0.05). Conclusions The psychological and behavioral adaptation characteristics of pediatric recipients after liver transplantation are heterogeneous. Medical staff should pay extensive attention to different characteristics of pediatric recipients after liver transplantation with different psychological and behavioral adaptation categories and adopt targeted screening and intervention strategies, aiming to improve psychological and behavioral adaptation outcomes of pediatric recipients after liver transplantation.

OBJECTIVE: To carry out preimplantation genetic testing (PGT) for a couple where the husband was affected by osteogenesis imperfecta combined with balanced translocation using the karyomapping technique. METHODS: Blastocysts were detected using karyomapping, the carrier status of COL1A1 c.760G>A (p.Gly254Arg) variant and the carrier status of the translocated chromosome were analyzed simultaneously. RESULTS: For a total of 10 blastocysts, two euploid blastocysts were found to not carry the COL1A1 c.760G>A (p.Gly254Arg) variant but a balanced translocation. After transplanting one of the blastocysts, clinical pregnancy was achieved. Amniocentesis at 18th gestational week and prenatal genetic testing was in keeping with the result of PGT.A healthy female was born at 40+4 weeks gestation. CONCLUSION For patients simultaneously carrying genetic variant and balanced chromosomal translocation, PGT can be performed with efficiency by the use of karyomapping method.
Blastocyst ; Female ; Fertilization in Vitro ; Genetic Testing ; Humans ; Osteogenesis Imperfecta/genetics* ; Pregnancy ; Preimplantation Diagnosis ; Spouses ; Translocation, Genetic

Objective To investigate the independent association of serum Fetuin-B with metabolic syndrome in obese Chinese adults.Methods Cross-sectional data on socio-demographic,lifestyle,clinical characteristics, and serum Fetuin-B were collected for 1 318 Chinese adults with central obesity.Associations of serum Fetuin-B with metabolic syndrome and insulin resistance were analyzed using multivariable Logistic regression analysis.Results A total of 820(62.2%)individuals were identified as metabolic syndrome.Subjects with metabolic syndrome showed significantly increased levels of serum Fetuin-B than those with non-metabolic syndrome[(4.18 ±1.39 vs 4.02 ± 1.35)μg/ml,P=0.043].Increased serum Fetuin-B were significantly associated with increased fasting plasma glucose and insulin levels, as well as prevalences of non-alcoholic fatty liver disease(NAFLD)and insulin resistance.After adjustment for potential confounders, serum Fetuin-B was significantly associated with increased risks of metabolic syndrome and insulin resistance(OR=1.19,95%CI 1.06-1.34,P=0.004;OR=1.15,95%CI 1.01-1.30,P=0.031 respectively).Conclusion Serum Fetuin-B level was significantly associated with NAFLD;and elevated serum Fetuin-B was significantly associated with increased risk of metabolic syndrome.