OBJECTIVE:To prepare buspiron hydrochloride sustained-release tablets and to study its release characterization in vitro and the factors affecting drug release.METHODS:Buspiron hydrochloride sustained-release tablets were prepared with hydroxypropyl methylcellulose(HPMC)as hydrophilic gel-matrix material and ethylcellulose(EC)as retarder by wet granulation.The impacts of releasing transmitters,contents of HPMC and EC,and viscosity on the drug release in vitro of the tablets were studied.RESULTS:For the prepared sustained release tablets,the 24h drug release amount was over 90%,and the drug release curve conformed to Higuchi equation.The more contents of HPMC and EC and the higher viscosity of HPMC in the tablets,the slower drug release velocity was obtained;but the viscosity of EC and the releasing transmitters had no significant impacts on the drug release velocity.CONCLUSION:With HPMC and EC as matrix materials,the 24h continuous drug release is available for buspirone hydrochloride sustained-tablets.

Objective To investigate the relationship between the plasma levels of ET-1,TAT,and hs-CRP and slow coronary flow syndrome (SCFS),and explore effects of coronary endothelial function,coagulation function,and inflammatory reaction on blood flow of coronary artery.Methods A total of 400 cases with normal blood flow of coronary artery by coronary angiogram was randomly selected.The coronary flow patterns were determined by corrected thrombolysis in myocardial infarction frame count method (cT-FC).Among them,45 cases whose average cTFC more than 27 were assigned as SCFS group,the other 45 cases no SCFS.Plasma levels of ET-1,TAT and hs-CRPwere examined with enzyme-linked immunosorbent assay (ELISA),and were compared between two groups.Moreover,multivariate analysis evaluating predictors of SCFS was performed with regression test.Results No statistical difference was found between two groups concerning the gender,history of hypertension,diabetes mellitus,and cigarette alcohol percentage..The plasma level of HDL in SCFS group was lower than that of no SCFS [(1.22 ± 0.42) mmol/L vs (1.44±0.34) mmol/L,t =-2.731,P ＜0.01],but the plasma level of glucose in the former was higher than that of the latter [(5.68 ±0.62) mmol/L vs (5.10 ±0.84) mmol/L,t =3.727,P ＜0.01].However,Plasma levels of ET-1,TAT and hs-CRP in SCFS were higher than that of no SCFS [(94.3 ± 16.78) ng/Lvs (83.5±12.53) ng/L,t =3.051,P ＜0.01;(12.96±3.24)μg/Lvs (8.76 ±2.64)μg/L,t =5.945,P ＜ 0.01 ; (2.48 ± 0.35) μg/L vs (1.38 ± 0.46) μg/L,t =11.259,P ＜ 0.01].Furthermore,Logistic regression analysis showed that ET-1,TAT and hs-CRP were risk factors for SCFS (OR ＞ 1.22).Conclusions Due to coronary endothelial dysfunction,endothelial inflammatory reaction,and activated coagulation function,slow coronary flow of coronary artery occurs.

Objective To evaluate the effect of the fast control scheme of schistosomiasis.Methods The fast control scheme of schistosomiasis was carried out,and the scheme mainly included dusting molluscicide,rapid immunodiagnosis screening and chemotherapy with praziquantel,environment modification,health education,etc.The control effects of the scheme were observed longitudinally.Results There were no infected snails found after the scheme was implemented from 2005 to 2008.The densities of living snails dropped from 1.48 snails/0.1 m~2 in 2004 to 0.71 snails/0.1 m~2 in 2008.The areas with snails dropped from 43.13 hm~2 in 2004 to 33.68 hm~2 in 2008.The infection rates of residents and cattle dropped to 0 in 2008.Conclusion The fast control scheme of schistosomiasis can control schistosomiasis fast.

Ventricular myocytes from hearts of the neonatal SD rats were treated with 10-7,10-6,and 10-5 mol/L simvastatin for 72 hours under high glucose condition. Compared with control group,the viability of cadiomyocyte was significantly lower in high glucose group (P＜0.01 ).The activity of lactate dehydrogenase,the relative expressions of NADPH oxidase subunits p22phox,p47phox mRNA,and reactive oxygen species level in the high glucose group were higher than those of control group ( all P＜0.05).lndexes mentioned above were significantly improved by simvastatin treatment in a dose-dependent manner.These results suggest that simvastatin ameliorates high glucose-induced injury of cardiomyocytes via increasing the expression of NADPH oxidase mRNA.

Objective: To understand the influenza vaccination rate and related factors of children in Xiqing District of Tianjin, so as to provide a scientific basis for improving the influenza vaccination coverage rate among children. Methods: A stratified random cluster sampling method was employed to select junior high school students and below students from 15 schools in five directions(east, west, south, north, midland) in Xiqing District, Tianjin, involving 13 075 students. A questionnaire survey was conducted among parents of students to analyze the influenza vaccination rate of children in 2023-2024 flu season (October to March of the following year). A binary Logistic regression model was used to analyze the factors affecting influenza vaccination. Results: The influenza vaccination rate was 16.66% for children in Xiqing District of Tianjin, in 2023-2024 flu season, among them, the vaccination rate in kindergartens was the highest (28.86%), followed by primary schools (18.87%) and junior high schools (12.61%). Binary Logistic regression analysis showed that having received the influenza vaccine during the 2020-2022 ( OR=10.55, 95%CI =9.48-11.73), parents awareness of influenza related knowledge ( OR=1.38, 95%CI =1.24-1.54), kindergarten children ( OR= 2.33 , 95%CI =1.91-2.83), primary school students ( OR=1.26, 95%CI =1.12-1.42), parents with a postgraduate degree or above ( OR=1.62, 95%CI =1.13-2.31), and a monthly average family income of 10 000-<20 000 yuan ( OR=1.67, 95%CI = 1.41- 1.99) were positive correlation factors with influenza vaccination of children ( P <0.05). Among parents of children who have not received the flu vaccine, 61.61% fully accepted flu vaccination or accepted but still considered. The most popular way for parents to obtain flu knowledge was flu prevention and control information from professional institutions during the flu season ( 77.38 %). Conclusions The influenza vaccination rate among kindergarten, as well as primary and junior high school students in Xiqing District of Tianjin is low. Promotion of influenza vaccination among children and increase the vaccination rate of influenza among children might help reduce the risk of campus flu outbreak.

Objective: To compare the knowledge and behavior toward hearing protection among workers in different workplaces and investigate its influence factors. Methods: 2 manufacturing companies with obvious noise hazard in workplace were selected into the study. Health management level was distinguished through field investigation and verification. Questionnaire focus on basic knowledge of hearing health, acceptance level of noise hazard, comfort of wearing hearing protectors and atmosphere in workplace was designed and was used to investigate the knowledge and behavior toward hearing protection. Results: Hearing protectors that meet the level of protection are distributed throughout the workplaces. Although company A has a lower noise hazards level, the health management system was poorly executed. The proportion of workers persisting in wearing hearing protectors throughout the work shift in company A was lower than B (P<0.01) . Workers in company A intended to underestimate the noise level (P<0.01) and the health effect of hearing loss (P<0.01) . All the workers were worry about suffering from hearing loss (P>0.05) , but those in company B had more positive attitude toward the protection of hearing protector (P<0.01) and relied on the protector (P<0.01) . The awareness of protection, in turn, help workers adapt attitude and get used to wearing hearing protectors consciously in workplace (P<0.01) . Conclusion Health management performance play a key role in help workers form good knowledge and behavior. To protect workplace health, employers need to creative a healthy supportive environment for workers.

Objective:To investigate the effect of Astragaloside Ⅳ on high glucose-induced cardiomyocyte pyroptosis.Methods:H9c2 cells were cultured in vitro and divided into control group(5.5 mmol/L glucose), high glucose group(33.3 mmol/L glucose), Astragaloside Ⅳ group(33.3 mmol/L glucose+ 100μmol/L Astragaloside Ⅳ), and NLRP3 inhibitor group(33.3 mmol/L glucose+ 1μmol/L MCC950). Cell counting kit 8(CCK-8)was used to detect the activity of H9c2 cells.Lactate dehydrogenase(LDH)kit was used to detect the content of LDH in cell supernatant.Superoxide anion fluorescent probe(DHE)was used to detect the level of intracellular reactive oxygen species(ROS). Real-time fluorescence quantitative polymerase chain reaction(RT-qPCR)and Western blot were used to detect the mRNA and protein expression levels of pyroptosis-related genes.Immunofluorescence was used to detect the fluorescence intensity of NLRP3.Enzyme-linked immunosorbent assay(ELISA)was used to detect the level of inflammatory factors in cell supernatant.Results:When the concentration of Astragaloside Ⅳ was 100 μmol/L, it could significantly inhibit the decrease of cardiomyocyte viability induced by high glucose( P<0.01)and reduce LDH release( P<0.01). Compared with the control group, the level of ROS was increased( P<0.01), the mRNA and protein expressions of pyroptosis-related molecules were up-regulated( P<0.01 for all), the fluorescence intensity of NLRP3 was increased( P<0.01), and the levels of inflammatory factors in the cell supernatant were increased in the high glucose group( P<0.01). Compared with the high glucose group, the ROS level was decreased( P<0.01), the mRNA and protein expressions of pyroptosis-related molecules were down-regulated( P<0.05 or P<0.01), the fluorescence intensity of NLRP3 was decreased( P<0.01), and the levels of inflammatory factors in cell supernatant were decreased( P<0.05 or P<0.01)in Astragaloside Ⅳ group and inhibitor group. Conclusions:Astragaloside Ⅳ plays a protective role in high glucose-induced cardiomyocyte injury by inhibiting NLRP3/Caspase-1 signaling pathway and inhibiting pyroptosis.Moreover, it can improve the anti-inflammatory and antioxidant properties in cell models.

OBJECTIVETo assess the safety, feasibility and clinical outcome of laparoscopic radical resection for low rectal cancer with telescopic anastomosis or with colostomy by stapler through transanal resection without abdominal incisions.

METHODSFrom January 2010 to September 2014, 37 patients underwent laparoscopic radical resection for low rectal cancer through transanal resection without abdominal incisions. The tumors were 4-7 cm above the anal verge. On preoperative assessment, 26 cases were T1N0M0 and 11 were T2N0M0.

RESULTSFor all cases, successful surgery was performed. In telescopic anastomosis group, the mean operative time was (178±21) min, with average blood loss of (76±11) ml and (13±7) lymph nodes harvested. Return of bowel function was (3.0±1.2) d and the hospital stay was (12.0±4.2) d without postoperative complications. Patients were followed up for 3-45 months. Twelve months after surgery, 94.6%(35/37) patients achieved anal function Kirwan grade 1, indicating that their anal function returned to normal.

CONCLUSIONSLaparoscopic radical resection for low rectal cancer with telescopic anastomosis or colostomy by stapler through transanal resection without abdominal incisions is safe and feasible. Satisfactory clinical outcome can be achieved mini-invasively.

Anal Canal ; Anastomosis, Surgical ; Colostomy ; Humans ; Laparoscopy ; Lymph Nodes ; Operative Time ; Postoperative Complications ; Rectal Neoplasms ; Safety

Objective To assess the safety, feasibility and clinical outcome of laparoscopic radical resection for low rectal cancer with telescopic anastomosis or with colostomy by stapler through transanal resection without abdominal incisions. Methods From January 2010 to September 2014, 37 patients underwent laparoscopic radical resection for low rectal cancer through transanal resection without abdominal incisions. The tumors were 4-7 cm above the anal verge. On preoperative assessment , 26 cases were T1N0M0 and 11 were T2N0M0. Results For all cases, successful surgery was performed. In telescopic anastomosis group, the mean operative time was (178±21) min, with average blood loss of (76±11) ml and (13±7) lymph nodes harvested. Return of bowel function was (3.0±1.2) d and the hospital stay was (12.0±4.2) d without postoperative complications. Patients were followed up for 3-45 months. Twelve months after surgery, 94.6%(35/37) patients achieved anal function Kirwan grade 1, indicating that their anal function returned to normal. Conclusions Laparoscopic radical resection for low rectal cancer with telescopic anastomosis or colostomy by stapler through transanal resection without abdominal incisions is safe and feasible. Satisfactory clinical outcome can be achieved mini-invasively.

Objective To assess the safety, feasibility and clinical outcome of laparoscopic radical resection for low rectal cancer with telescopic anastomosis or with colostomy by stapler through transanal resection without abdominal incisions. Methods From January 2010 to September 2014, 37 patients underwent laparoscopic radical resection for low rectal cancer through transanal resection without abdominal incisions. The tumors were 4-7 cm above the anal verge. On preoperative assessment , 26 cases were T1N0M0 and 11 were T2N0M0. Results For all cases, successful surgery was performed. In telescopic anastomosis group, the mean operative time was (178±21) min, with average blood loss of (76±11) ml and (13±7) lymph nodes harvested. Return of bowel function was (3.0±1.2) d and the hospital stay was (12.0±4.2) d without postoperative complications. Patients were followed up for 3-45 months. Twelve months after surgery, 94.6%(35/37) patients achieved anal function Kirwan grade 1, indicating that their anal function returned to normal. Conclusions Laparoscopic radical resection for low rectal cancer with telescopic anastomosis or colostomy by stapler through transanal resection without abdominal incisions is safe and feasible. Satisfactory clinical outcome can be achieved mini-invasively.