OBJECTIVE To study the structural characteristics of purified polysaccharide isolated from Polygonatum cyrtonema Hua and explore its anti-fatigue and intestinal bacteria improvement effects,so as to provide theoretical basis for the development of products using this polysaccharide as functional ingredients.METHODS PMP pre-column derivatization-high performance liquid chromatography,trimethylsilyl ether derivatization-gas chromatography and other methods were used to chemically characterize the pu-rified polysaccharide;the mouse weight-loading swimming test and biochemical indicators were used to evaluate its anti-fatigue effect;16S rRNA intestinal flora sequencing was adopted to study the effect of the purified product in improving intestinal bacteria.RESULTS The obtained polysaccharide was a fructan product and contained small amounts of glucose(Glc),galactose(Gal),arabinose(Ara),mannose(Man),rhamnose(Rha)and galacturonic acid(GalA),which had a relative molecular mass in the range of 0.4-285 kDa,and the molecular weight of the main component was around 3 kDa.Compared with the model group,the high-dose polysaccha-ride group could significantly prolong the exhaustive swimming time of mice(P＜0.01),reduce the levels of BUN and UA in serum and the LA(P＜0.01)and MDA levels(P＜0.05)in muscle tissue,and enhance SOD(P＜0.01),GSH-Px(P＜0.001)and CAT(P＜0.05)levels in liver tissue.Compared with the blank control group,the low-dose polysaccharide group could increase the relative a-bundance of probiotics Eggerthelaceae(g_unclassified_f_Eggerthelaceae)and Weissella(g_Weissella)in the fecal microorganisms of mice(P＜0.05).CONCLUSION The chemical composition of purified polysaccharide isolated from Polygonatum cyrtonema Hua is determined,and it is proven that the polysaccharide has a good anti-fatigue effect and can promote the growth of probiotics in the intes-tine,which provides a basis for product development using this polysaccharide as a functional ingredient.

Objective To prepare and identify rabbit anti-cyclin dependent kinase 6 (CDK6) antibody. Methods The recombinant pET21a (+)/CDK6 was successfully constructed, then the recombinant plasmid was transformed into E.coli BL21 (DE3) competent cells and was induced by isopropyl-β-D-thiogalactopyranoside (IPTG) for protein expression, which was detected by SDS-PAGE and Western blot analysis. The expressed protein was purified by nickel-chelating nitrilotriacetic acid (Ni-NTA) agarose and then analyzed by SDS-PAGE. Japanese white rabbits were immunized with purified CDK6 protein for many times every two weeks. The blood was collected at 0, 2, 4 and 6 weeks after immunization, and serum was separated from blood. The titer was detected by indirect ELISA. Western blot analysis, immunofluorescence assay and immunohistochemistry were employed to determine the specificity. Results High purity CDK6 protein and high specificity of rabbit anti-CDK6 antibody were successfully prepared. The titer of CDK6 rabbit serum antibody reached 1:30 000 after immunization, which could specifically recognize the CDK6 protein expressed in cervical cancer cell line and cervical cancer tissues. Conclusion The high titer and specificity of rabbit anti-CDK6 antibody is successfully prepared.
Animals ; Female ; Humans ; Rabbits ; Antibodies ; Antibody Specificity ; Blotting, Western ; Cyclin-Dependent Kinase 6 ; Enzyme-Linked Immunosorbent Assay ; Uterine Cervical Neoplasms

Objective:To investigate the status of frailty and activities of daily living (ADL) in maintenance hemodialysis (MHD) patients, and to explore the effect of frailty phenotype on ADL.Methods:The patients who underwent MHD in Kidney Disease Center of the First Affiliated Hospital from March 2019 to March 2020 were enrolled in this study. The demographic and laboratorial data were collected by cross-sectional survey method. Fried frailty phenotype scale and ADL scale were used to evaluate the frailty and ADL, respectively. The differences of basic data and different frailty phenotypes between the normal function group and the function decline group were compared in terms of ADL, physical self-maintenance ability and instrumental ADL ability. Pearson correlation analysis was used to analyze the correlation between frailty and ADL, and binary logistic regression analysis was used to analyze the influencing factors of ADL.Results:A total of 676 MHD patients were included in this study, including 434 males (64.2%) and 242 females (35.8%). The age was (59.2±19.4) years old, and the median dialysis age was 59.0 (25.3, 110.0) months. There were 159 frailty patients (23.5%), 230 pre-frailty patients (34.0%), and 287 non-frailty patients (42.5%). The ADL was decreased in 163 patients (24.1%), including 131 patients (19.4%) with decreased physical self-maintenance ability and 161 patients (23.8%) with decreased instrumental ADL ability. Pearson correlation analysis showed that the frailty score was positively correlated with total ADL score ( r=0.728, P<0.001), physical self-maintenance ability score ( r=0.669, P<0.001) and instrumental ADL ability score ( r=0.729, P<0.001). Binary logistic regression analysis results showed that older age and lower physical activity, fatigue, slowed steps and lower grip strength in the frailty phenotypes were the independent influencing factors of ADL, physical self-maintenance ability and instrumental ADL ability (all P<0.05). Conclusions:The prevalence of frailty is 23.5% in MHD patients, and 24.1% of MHD patients have decreased ADL. Elder age and lower physical activity, fatigue, reduced step counts, and lower grip strength in frailty phenotypes are the independent influencing factors for poor ADL, poor physical self-maintenance ability and poor instrumental ADL ability.

Objective: To investigate the influencing factors of smoking tendency of adolescents and to analyze the influence of e-cigarette on smoking tendency of teenagers and the possible interaction, to provide evidence for tobacco control measures. Methods: Stratified multistage cluster probability sampling method was used to select 6 178 students from junior middle school, high school and vocational high school students in Shanghai for questionnaire survey from September to October 2019. Students with smoking tendency were taken as case group, adolescents with same sex and similar age(within 1 year) were mathed in 1∶3 ratio. A total of 631 adolescents with smoking tendency and 1 870 non-smoking tendency were included in the study. Conditional Logistic regression was used to analyze the influencing factors and possible interactions. Results: After adjusting gender, age and other covariates, conditional Logistic analysis results showed that the smoking tendency of middle school students was associated with factors such as their friends smoking, trying cigarettes and trying e-cigarettes. The OR value and 95%CI were 3.26(2.47-4.29), 5.90(3.76-9.24), and 3.28(2.11-5.10), respectively. The interaction analysis results showed that the OR value and 95%CI of the multiplying interaction between friends smoking and trying e-cigarettes, trying smoking and trying e-cigarettes were 8.62(4.90-15.17) and 12.01(6.02-23.95), respectively. There was no additive interaction. Conclusion Tobacco control interventions, such as e-cigarette harm publicity and peer education, can help to change teenagers smoking tendency and further reduce their tobacco use rate.

OBJECTIVE: To complete standardized management and follow-up for the cancer pain and chronic pain patients in outpatient department. METHODS: Information management platform was designed and established for cancer pain and chronic pain patients in outpatient department, including information entry, information inquiry, prompt for drug dispensing in advance, file unified management and regular scanning and removing excess medical records. The procedure of prescribing narcotic drugs for first visiting, subsequent visiting and follow-up patients was introduced. File management and prescription rationality before and after the establishment of information platform were compared. The adoption of pharmacist' s recommendation after the establishment of information platform were counted. RESULTS: Compared with before the establishment of information platform, the ratio of problematic profiles decreased from 42. 96％ to 7. 06％ (P＜0. 05); the ratio of irrational prescription decreased from 4. 39％ to 1. 19％ (P＜0. 05). Pharmacists provided a total of 1 542 recommendations for the patients with poor pain control and ADR. The adoption rate of the pharmaceutical recommendations was 63. 62％. CONCLUSIONS: The cancer pain and chronic pain information management platform can manage the outpatients' profile effectively and improve the rationality of the prescription. Meanwhile, the pharmacists have played an important role in the pain treatment for outpatients.

Objective To evaluate the position of the fetal conus medullaris during pregnancy and its value in detecting tethered cord syndrome(TCS). Methods Nine hundred and seventy-four normal fetuses and 46 fetuses with TCS between 15 and 41 weeks gestation were involved in the study.Parameters D 1 (the distance between the end of the conus medullaris and the caudal edge of last vertebral body ossification center) and D2 (the distance from the end of the conus medullaris to the caudal skin namely the intersection point of the extending line of D1 and the skin) were measured in the caudal midsagittal plane of the spine. Sixty normal fetuses were chosed randomly for interobserver variability.Correlation analysis between these two parameters and gestational age(GA) were conducted and the normal reference value of these parameters were calculated in normal group. The ratios of growth parameters ( Biparietal diameter, Head circumference,Abdominal circumference,Femur length) to D1 and D2 were calculated separately to observe the difference of the ratios between two groups. All the parameters and ratios of normal fetuses were compared with that of TCS cases.Results There was no significant difference in D1 and D2 between two observers.A significant linear correlation between the parameters and GA was found in normal group,linear regression equations were D1=0.251 GA -2.265 cm (R2=0.926,P <0.01) and D2=0.267 GA -1.812 cm(R2=0.928,P <0.01),respectively.D1 and D2 were much lower in normal group than in abnormal group (all P <0.01). The ratios of the growth parameters to D1 and D2 were relatively stable and had statistically differences between two groups in different gestational age. Conclusions The methods that determination of D1 and D2 are simple and feasible,and could help to the prenatal diagnosis of TCS.

Objective To compare the clinical efficacy of acupuncture and medicine for the treatment of chronic pharyngitis. Methods Sixty chronic pharyngitis patients were randomized into treatment group and control group, 30 cases in each group. The treatment group was treated with acupuncture mainly on acupoints of Zhaohai(KI6), Lieque(L7), Tiantu(CV22) , Lianquan(CV23), Tianrong(SI17) , Hegu(LI), Yuji (LU10) for nourishing yin to reduce fire and clearing throat. The supplementary acupoints were selected according to the symptoms and physical signs. Acupuncture was performed once a day and 6 times a week. The control group received western medical therapy including pharyngeal application with 1% iodine glycerin preparation and oral use of Cydiodine tablets, 3 times per day. Four weeks constituted one treatment course and the treatment for the two groups covered 2 courses. After treatment, the therapeutic effect was evaluated. The scores of the signs and s ymptoms as well as scores of chronic pharyngitis syndrome discomfort rating questionnaire(CPSDQ) evaluated by visual anal og scale(VAS) were observed. Results (1) The overall effective rate of the treatment group was 93.3%, higher than that of the control group(73.3%), and the inter-group difference was statistically significant (P<0.05). (2) After treatment, scores of the signs and symptoms and VAS for CPSDQ scores in the two groups were reduced as compared with those before treatment(all P<0.05 or P<0.01 ) .The improvement of the scores in the treatment group was superior to that in the control group(all P<0.05 or P<0.01).(3) During the treatment , needling-induced mild pain and bleeding occurred in the treatment group. No acupuncture syncope, stuck needles or allergic and toxic-side effect was shown in the two groups. Conclusion Acupuncture therapy can obviously relieve the symptoms, signs and discomfort in the patients with chronic pharyngitis, and the curative effect is superior to the drugs.

AIM:To explore the changes of plasma levels of soluble vascular endothelial growth factor receptor 2 ( sVEGFR2) and superoxide dismutase ( SOD) in hypertensive patients and hypertensive diabetic patients.METHODS:In this cross-sectional study, 88 cases were enrolled, which were divided into hypertensive group (n=31), hypertensive diabetic group ( n=31 ) and control group ( n=26 ) .Blood pressure was obtained from each participant with mercury sphygmomanometer.The levels of sVEGFR2 and SOD were measured by ELISA.Meanwhile, the levels of plasma glucose, glycosylated hemoglobin A1c ( GHbA1c) and lipid profile were detected.RESULTS:The levels of total cholesterol ( TC) and body mass index (BMI) were significantly higher in hypertensive group than those in control group (P<0.05).The levels of TC, low-density lipoprotein cholesterol ( LDL-C) , triglyceride ( TG) , BMI, waist circumference were significantly higher in hypertensive diabetic group than those in control group (P<0.05).The plasma levels of sVEGFR2 and SOD in both hypertensive diabetic group and hypertensive group were significantly decreased compared with control group ( P<0.05), while the mean plasma levels of sVEGFR2 and SOD in hypertensive diabetic group were significantly decreased compared to the hypertensive group ( P<0.05 ) .A significantly positive correlation between sVEGFR2 and SOD in the whole study population (P<0.05) was observed.CONCLUSION: The plasma level of sVEGFR2 is decreased in both hypertensive and hypertensive diabetic patients, and more significantly decreased in hypertensive diabetic patients.De-creased SOD level may be associated with to the reduction of sVEGFR2.

Objective:To analyse the causes of early implantation failure and the therapeutic measures with re-implantation after the failures.Methods:6 cases of implantation failure including early infections,loosening and non-osteointegration were reviewed and trea-ted by re-implantation therapy,and the causes of failure were discussed and the effects of re-treatment were evaluated.Results:2 cases were found to be with infection of adjacent teeth after implantation and were treated by removal of the implant,socket curettage,root ca-nal therapy(RCT)and antibiotics followed by reimplantation.Implant loosening and non-osteointegration were observed in 4 cases, which were treated by the similar methods for the implant socket.Reimplantation was successful in all 6 cases followed-up for 1 -3 years.Conclusion:Preventive measure for implantation failure should include indication selection,control of infections in adjacent teeth and periodontosis,use of GBR technic and so on.Re-implantation following proper treatment of adjacent teeth and the socket of implant is effective for the treatment of implantation failure.

Objective To investigate the prevalence rate of nosocomial infections and the use of antibacterial agents in Zhejiang Cancer Hospital.Methods The cross-sectional survey on nosocomial infections was conducted among inpatients in Zhejiang Cancer Hospital on August 11,2011 and June 19,2012.The differences in prevalence rates of nosocomial infections,purposes of antibacterial agents use (for treatment,for prevention,or for both treatment and prevention),methods of medication (single or combined medication),and pathogen detections between 2011 and 2012 were analyzed with x2 test.Results There were 854 and 886 patients enrolled in the study in 2011 and 2012,and the prevalence rates of nosocomial infections were 5.27％ (45/854) and 5.08％ (45/886),respectively (x2 =0.186,P ＞ 0.05).Lower respiratory tract infection was the most common nosocomial infections both in 2011 and 2012,which accounted for 28.89％ and 36.96％ of all infections,respectively; and there was no significant difference in infection sites between 2011 and 2012 (x2 =1.415,P＞0.05).Totally 154 out of 854 patients (18.03％)in 2011 and 186 out of 886 patients (20.99％) in 2012 received antibacterial agents,and single medication was the most common.There were no significant differences in the purposes and methods of medication between 2011 and 2012 (x2 =1.994 and 3.042,P ＞ 0.05).Pathogen detections were performed in 56 out of 59 patients (94.92％) and 57 out of 65 patients (87.69％) who received antibacterial agents for treatment in 2011 and 2012,respectively.The most common pathogens were Escherichia coli,Pseudomonas aeruginosa,and Acinetobacter baumanni.Conclusion The prevalence rate of nosocomial infection in Zhejiang Cancer Hospital is of the satisfactory level,which is due to the good management of antibacterial agents use.