1.Discussion of the subsidy mechanism of public hospitals in Zhejiang province
Yuhang ZENG ; Hengjin DONG ; Lin GAO ; Qian YANG ; Hao ZHANG
Chinese Journal of Hospital Administration 2017;33(2):96-97,95
Analyzed in the paper is the current subsidy mechanism for public hospitals in Zhejiang province, with analysis of problems found. The authors recommended to build a mass fraction subsidy mechanism to cover up the insufficiency of government financial subsidy; to fully leverage the price compensation of medical services; to subsidize in view of the functional positioning of various medical institutions;and explore more channels for public hospitals′subsidies.
2.Evidence-based research on the selection method system for China's essential medicine list
Hao ZHANG ; Shuyan GU ; Qian YANG ; Lin GAO ; Xuemei ZHEN ; Yuhang ZENG ; Hengjin DONG
Chinese Journal of Hospital Administration 2017;33(4):293-297
Objective To find a selection method system appropriate for China's essential drug list.Methods Collection and analysis of technical paper literature on essential drug list developement,adjustment technical papers,and literature on evidence-based medicine,pharmacoeconomics evaluation,and medical insurance budget analysis from WHO and other countries.On such basis,a method system for selecting China's essential medicine list can be proposed,with its feasibility analyzed and demonstrated.Results The GRADE assessment proposed by WHO was used to evaluate the efficacy and safety of the drug;the pharmacy economics evaluation is added to assess the economic efficiency;these were aided by the pharmacoeconomics evaluation for a comprehensive evaluation of the pharmacoeconomics of the drug in question,supplementing analysis of the medical insurance,and ensuring its affordability of essential medicine so selected.The theory of this system is well developed,and supporting software ready for application.Examples in Zhejiang Province regarding essential medicine for diabetes have proved this method feasible.Data acquisition constitutes a major roadblock for scientific selection due to barriers against medical insurance data sharing.Conclusions Theoretic basis and method tools are fully available for essential medicine selection,and the selection method system as proposed in this study prove feasible to some extent.Decision makers are recommended to scientifically select the essential drugs,and to encourage data sharing,in order to make the list more scientific and pragmatic.
3.The slow release performance of calcium sulfate/poly(amino acid) compound materials carrying triple anti-tuberculosis drugs in a rabbit model of spinal tuberculosis
Qian WANG ; Guangqi GENG ; Xiaoming CONG ; Haitao LIU ; Jiandang SHI ; Zili WANG ; Wenxin MA ; Yuhang SUN
Chinese Journal of Tissue Engineering Research 2017;21(10):1520-1526
BACKGROUND: Calcium sulfate/poly amino acid compound materials carrying triple anti-tuberculosis drugs have been proved to have excellent slow release performance based on our preliminary studies on the physical and chemical properties and the release properties of the compound materials.OBJECTIVE: To observe the slow release performance of the calcium sulfate/poly(amino acid) compound material carrying triple anti-tuberculosis drugs in a rabbit model of spinal tuberculosis.METHODS: Twenty-four New Zealand white rabbits were used to make L4-5 spinal tuberculosis models and divided into two groups in a random way following removal of tuberculosis lesions. Calcium sulfate/poly amino acid compound material carrying isoniazide, rifampicin, pyrazinamide or calcium sulfate/poly(amino acid)compound material with no drugs was implanted into the defect in the experimental or control group,respectively. At 2, 4, 6 and 8 weeks after implantation, the concentrations of isoniazid, rifampicin and pyrazinamide in the defect region, including the bone tissue, adjacent psoas major and inferior vena cava,were measured.RESULTS AND CONCLUSION: In the experimental group, the isoniazid levels in the damaged bone tissue and psoas major were kept in minimum bactericidal concentration (MBC) at 8 weeks after implantation and in the minimum inhibitory concentration (MIC) at the end of 12 weeks after implantation, while its level in the vein was kept in MBC at 2 weeks and in MIC at 8 weeks. The rifampicin levels in the bone tissue and psoas major were kept in MBC at 4 weeks after implantation and in the MIC at 8 weeks after implantation, while its level in the vein was kept MIC at 4 weeks.The pyrazinamide levels in the damaged bone tissue and psoas major were kept in MBC at 8 weeks after implantation and in the MIC until 8 weeks after implantation, while its level in the vein was kept MIC at 8 weeks. In the control group,there were no levels of isoniazid, rifampicin and pyrazinamide in the damaged bone tissue, adjacent psoas major and inferior vena cava in comparison with the baseline. These results show that isoniazid, rifampicin and pyrazinamide in the defect region can achieve sustained slow release in the rabbit model of spinal tuberculosis after implantation of the calcium sulfate/poly(amino acid) compound material carrying triple anti-tuberculosis drugs. In addition, the local drug concentration and duration in the defect region are better than those in the blood.
4.Seroprevalence of Toxoplasma gondii infections among patients with autoimmune diseases
Ping-Ping CAO ; Xu-Fang YE ; Chun-Yan QIAN
Chinese Journal of Schistosomiasis Control 2021;33(3):305-307
Objective To understand the seroprevalence of Toxoplasma gondii infections among patients with autoimmune diseases, so as to provide the scientific evidence for the management of toxoplasmosis in patients with autoimmune diseases. Methods A total of 237 patients with definitive diagnosis of autoimmune disease were selected as the study subjects, including 79 cases with systemic lupus erythematosus, 71 cases with rheumatoid arthritis and 87 cases with inflammatory bowel disease, while 237 healthy volunteers served as controls. The serum anti-T. gondii IgG antibody was detected using enzyme-linked immunosorbent assay (ELISA) in patients with autoimmune diseases and healthy controls, and the detection of serum IgG antibody against T. gondii was compared between the autoimmune disease patients and healthy controls. Results The seroprevalence of serum IgG antibody against T. gondii was significantly greater in patients with autoimmune diseases than in healthy controls (29.96% vs. 4.22%; χ2 = 55.41, P < 0.01), and the seroprevalence of T. gondii infection was all significantly higher in patients with systemic lupus erythematosus (31.65%), rheumatoid arthritis (23.94%) and inflammatory bowel disease (33.33%) than in healthy controls (χ2 = 45.25, 26.58 and 50.95; all P values < 0.01). Conclusion The seroprevalence of anti-T. gondii IgG antibody is significantly higher in patients with autoimmune diseases than in healthy controls, and T. gondii infection may be a potential risk factor for the development of systemic lupus erythematosus, rheumatoid arthritis and inflammatory bowel disease.
5.Seroprevalence of Toxoplasma gondii and Toxocara infections among pregnant women in Hangzhou City
Chinese Journal of Schistosomiasis Control 2020;32(5):534-536
Objective To investigate the prevalence of Toxoplasma gondii and Toxocara infections among pregnant women in Hangzhou City, so as to provide baseline data for decreasing birth defects and improving the population quality. Methods A total of 235 pregnant women receiving prenatal diagnosis at the First People’s Hospital of Yuhang District during the period between February 2018 through December 2019 were recruited as the observation group, and 235 age-matched, non-pregnant healthy women at the same hospital during the same period served as the control group. The subjects’medical records were captured from the hospital management information system. Blood samples were collected from the observation and control groups and detected for the presence of IgG antibodies against T. gondii and Toxocara using an enzyme-linked immunosorbent assay (ELISA). The seroprevalence of the IgG antibodies against T. gondii and Toxocara was compared between the observation and control groups. Results The subjects in the observation group had a mean age of 26.5 ± 4.3 years (range, 23 to 31 years), and gestational ages of 10 to 27 weeks, and the subjects in the control group had a mean age of 26.1 ± 5.7 years (range, 20 to 30 years). The seroprevalence rates of IgG antibodies against T. gondii (28.51% vs. 4.68%; χ2 = 34.85, P < 0.01) and Toxocara (24.26% vs. 5.11%; χ2 = 25.77, P < 0.01) were both significantly higher in the observation group than in the control group, and the seroprevalence of T. gondii and Toxocara co-infections was also significantly greater in the observation group than in the control group (13.19% vs. 2.13%; χ2 = 17.49, P < 0.01). Conclusions The seroprevalence rates of T. gondii and Toxocara infections and their co-infections are all high among pregnant women in Hangzhou City. Screening of T. gondii and Toxocara infections is strongly recommended during pregnancy.
6.An in vitro experimental study on the physical and elution properties of PMMA bone cement loaded with rifampicin, iso-niazid, pyrazinamide and moxifloxacin
Wenxin MA ; Weidong JIN ; Qian WANG ; Zili WANG ; Zhikai LIN ; Min JIANG ; Yuhang SUN ; Guoliang SUN ; Yanni MA ; Jianghua DU
Chinese Journal of Orthopaedics 2016;36(11):735-744
Objective To investigate the feasibility of Antituberculotic?loaded bone cement (ATLBC) prepared by mix?ing the anti?TB drugs Rifampicin (RFP), Isoniazid (INH), Pyrazinamid (PZA), Moxifloxacin (MFX) with Palacos R PMMA bone cement in Total Joint Arthroplasty treatment for Joint Tuberculosis. Methods Forty grams of Palacos R bone cement powder without antibiotics was mixed with 1 or 2 grams of RFP, INH, PZA and MFX respectively. According to ISO 5833:2002 stan?dard, 8 groups of ATLBC standard test specimen were prepared as experiment group and Palacos R PMMA bone cement with?out antibiotics was prepared as control group. Physical properties (such as the average dough time, curing time, maximum tem?perature), mechanical strength (such as the compressive strength, the bending resistance strength, the modulus of elasticity) and the concentrations of eluant drug in different time points of ATLBC were detected. Results In RFP (1 g), RFP (2 g), INH (1 g) and INH (2 g) group, the average dough time and curing time were longer than those in control group, which exceeded the standard scope of ISO, while the average maximum temperature was significantly lower than that in control group. The INH ( 1 g) group and INH (2 g) group hardened after mixing for 14 days. The RFP (1 g) group and RFP (2 g) group hardened after mixing for 30 days. Twenty minutes after mixing and hardening, the compressive strength, bending resistance strength and modulus of elastic?ity were significantly lower than the specified values of ISO standard. The physical properties and mechanical strength in PZA ( 1 g) group, PZA (2 g) group, MFX (1 g) group, MFX (2 g) group and control group were in accordance with the specified values of ISO standard, and they hardened after 20 minutes. In RFP (1 g) group, RFP (2 g) group, INH (1 g) group, INH (2 g) group, PZA (1 g) group, PZA (2 g) group, MFX (1 g) group and MFX (2 g) group, the concentration of eluant could maintain for 3 days, 7 days, 90 days, 90 days, 45 days, 60 days, 60 days and 60 days respectively. Conclusion RFP and INH mixing with Palacos R PMMA bone cement can hinder the aggregation of bone cement so they are unsuitable for preparing ATLBC. PZA and MFX mixing with Palacos R PMMA bone cement do not affect the physical properties of bone cement, with excellent mechanical strength and elu?tion properties. Because the minimal inhibitory concentration of PZA is higher and its antimicrobial activity maintains shorter time, while MFX maintains longer time in antimicrobial activity, it's more suitable for the preparation of ATLBC.
7.Association of murine double minute 2 and P53 polymorphisms with breast cancer susceptibility.
Mei-li WANG ; Yun-xia XU ; Jian QIAN ; Fen-hua WANG
Chinese Journal of Preventive Medicine 2013;47(2):124-128
OBJECTIVETo investigate the combined effects between the two polymorphisms murine double minute 2 (MDM2) rs2279744 T→G and P53 rs1042522 G→C on the genetic susceptibility of breast cancer.
METHODSA total of 600 female patients with diagnosed breast cancer were consecutively recruited from the Yuhang district, Hangzhou city during March 2001 to May 2009. In the same period as the cases were collected, 600 healthy women living in Yuhang district, Hangzhou city were selected from a nutritional survey conducted. Peripheral blood lymphocytes were obtained from the study subjects and the demographic information were collected through questionnaires. PCR-restriction fragment length polymorphism (PCR-RFLP) was used for genotyping MDM2 rs2279744 T→G and P53 rs1042522 G→C. Logistic regression analysis was used to analyze the combined effects of the two polymorphisms on breast cancer risk.
RESULTSThe frequency of MDM2 rs2279744 GG, TG and TT genotypes were 31.5% (189/600), 45.5% (273/600), 23.0% (138/600) in case group and 19.0% (114/600), 49.2% (295/600), 31.8% (191/600) in control group. The frequency of P53 rs1042522 GG, GC and CC genotypes were 23.1% (139/600), 50.2% (301/600), 26.7% (160/600) in case group and 30.5% (183/600), 51.3% (308/600), 18.2% (109/600) in control group. Logistic regression analysis showed that carriers with rs2279744 TG, GG genotypes had a significant increased risk for developing breast cancer compared with rs2279744 TT carriers (OR = 1.31, 95%CI: 0.97 - 1.73 for TG; OR = 2.24, 95%CI: 1.61 - 3.09 for GG). When comparing with rs1042522 GG carriers, carriers with rs1042522 GC, CC genotypes had a significant increased risk for developing breast cancer (OR = 1.34, 95%CI: 0.94 - 1.68 for GC; OR = 1.89, 95%CI: 1.35 - 2.68 for CC). The united analysis of this two polymorphisms showed that compared with individuals carrying rs2279744 TT and rs1042522 GG (the frequency were 4.8% (29/600) in case group and 11.5% (69/600) in control group), carries with rs2279744 TG/GG and rs1042522 GC/GG genotypes (the frequency were 95.2% (571/600) in case group and 88.5% (531/600) in control group) showed significant higher risk in the susceptibility to breast cancer (OR = 2.30, 95%CI: 1.39 - 3.82 for TG/GC + GG; OR = 2.14, 95%CI: 1.29 - 3.55 for TT + GC/CC; OR = 2.86, 95%CI: 1.80 - 4.53 for TG/GG + GC/CC). The combination of MDM2 rs2279744 T→G and P53 rs1042522 G→C contributed to a significantly higher risk of breast cancer than did any one of the variant (P = 0.046). The risk of susceptibility to breast cancer was much higher when this two polymorphisms both variant.
CONCLUSIONSThe MDM2 rs2279744 T→G and P53 rs1042522 G→C may be risk factor for breast cancer. Significant combined effects between the two polymorphisms may contribute to the genetic susceptibility to breast cancer.
Adult ; Breast Neoplasms ; genetics ; Case-Control Studies ; Female ; Genetic Predisposition to Disease ; Genotype ; Humans ; Middle Aged ; Polymorphism, Single Nucleotide ; Proto-Oncogene Proteins c-mdm2 ; genetics ; Risk Factors ; Tumor Suppressor Protein p53 ; genetics
8.Effect of Chaijin-Huayu decoction combined with minimally invasive surgery for the patients with cholecystic polyposis
Yafei LIANG ; Xinqiao CHU ; Yuhang SHEN ; Ya'nan BAI ; Qian YANG
International Journal of Traditional Chinese Medicine 2018;40(9):810-813
Objective To observe the effect of Chaijin-Huayu decoction combined with endoscopic minimally invasive for gallbladder polyposis and its effect on quality of life.Methods A total of 91 patients with gallbladder polyposis were selected from March 2014 to early March 2017 outpatients and wards of Hebei Provincial Traditional Chinese Medicine Hospital.According to the method of random number table,the paitents were randomly divided into the observation group (n=46) and the control group (n=45).After three courses of treatment,the total effective rate,TCM symptom score and quality of life were observed in both groups,and the postoperative complications of the two groups were compared.Results After three courses of treatment,the total effective rate of the observation group was 91.3% (42/46),while that of the control group was 88.9% (40/45).There was no significant difference between the two groups (x2=0.149,P=0.592).In the observation group,the scores of subcardiac pycnosis and belching,right flank distended pain and burp were lower than those of the control group (t were 2.431,3.560 and 2.891 respectively,all P<0.05).In the SF-36 scale,the scores of mental health,social function,physical pain,physiological function,emotional function,vitality,physiological function and overall health of the observation group were higher than those of the control group (t were 2.342,2.831,2.765,2.545,2.485,2.650,2.582,2.325 respectively,all P<0.05);The incidence of surgical complications of the observation group was 2.2% (1/46),while that of the control group was 17.8% (8/45),and the difference between the two groups was statistically significant (x2=0.149,P>0.05).Conclusions Chaijin-Huayu decoction combined with minimally invasive choledochoplasty could relieve symptoms,improve quality of life and reduce postoperative complications in patients with gallbladder polyposis.
9.Identification of unknown pollutants in drinking water based on solid-phase extraction and supramolecular solvent extraction
Zixin QIAN ; Yuhang CHEN ; Chao FENG ; Yuanjie LIN ; Qian XU ; Ziwei LIANG ; Xinyu WANG ; Dasheng LU ; Ping XIAO ; Zhijun ZHOU
Journal of Environmental and Occupational Medicine 2025;42(7):854-861
Background With the progression of industrialization, an increasing number of emerging contaminants are entering aquatic environments, posing significant threats to the safety of drinking water. Therefore, establishing a system for identifying unknown hazardous factors and implementing safety warning mechanisms for drinking water is of paramount importance. Among these efforts, non-target screening plays a critical role, but its effectiveness is largely constrained by the scope of coverage of sample pre-treatment methods. Objective To integrate modern chromatography/mass spectrometry techniques with advanced data mining methods to develop a non-discriminatory sample pre-treatment method for comprehensive enrichment of unknown contaminants in drinking water, laying a technical foundation for the discovery and identification of unknown organic hazardous factors in drinking water. Methods A non-discriminatory pre-treatment method based on supramolecular and solid-phase extraction was developed. The final target compounds including 333 pesticides, 194 pharmaceuticals and personal care products (PPCPs), and 59 per- and polyfluoroalkyl substances (PFASs) were used for optimizing the pre-treatment method, confirming its coverage. The impacts of different eluents on the absolute recovery rates of target compounds were compared to select the conditions with the highest recovery for sample pre-treatment. The effects of different supramolecular solvents and salt concentrations on target compound recovery were also evaluated to determine the most suitable solvent and salt concentration. Results The solid-phase extraction elution solvents, supramolecular extraction solvents, and salt concentrations were optimized based on the target compound recovery rates. The optimal recovery conditions were achieved using 2 mL methanol, 2 mL methanol (containing 1% formic acid), 2 mL ethyl acetate, 2 mL dichloromethane, hexanediol supramolecular solvent, and 426 mg salt. The detection method developed based on these conditions showed a good linear relationship for all target compounds in the range of 0.1-100.0 ng·mL−1, with R² > 0.99. The method’s limit of detection ranged from 0.01 ng−1 to 0.95 ng−1, and 95% of target compounds were recovered in the range of 20%-120%, with relative standard deviation (RSD) less than 30%, indicating good precision. Conclusion The combined pre-treatment method of solid-phase extraction and supramolecular solvent extraction can effectively enrich contaminants in drinking water across low, medium, and high polarities, enabling broad-spectrum enrichment of diverse trace contaminants in drinking water. It provides technical support for broad-spectrum, high-throughput screening and identification of organic pollutants in drinking water, and also serves as a reference for establishing urban drinking water public safety warning systems.
10.Mechanism underlying reduction of cerebral ischemia-reperfusion injury by electroacupuncture preconditioning in rats: relationship between cannabinoid type 1 receptor and NLRP3 inflammasome
Yuhang HE ; Juan LI ; Qiang WANG ; Qian ZHAI
Chinese Journal of Anesthesiology 2023;43(2):181-185
Objective:To evaluate the relationship between cannabinoid receptor 1 (CB1R) and the NOD-like receptor thermal protein domain-associated protein 3 (NLRP3) during the reduction of cerebral ischemia-reperfusion (I/R) injury by electroacupuncture (EA) preconditioning in rats.Methods:Forty SPF healthy male Sprague-Dawley rats, aged 7-9 weeks, weighing 250-280 g, were divided into 5 groups ( n=8 each) according to the random number table method: sham operation group (Sham group), cerebral I/R group (I/R group), EA preconditioning group (EA group), CB1R antagonist AM251+ EA preconditioning group (AM251+ EA group), and CB1R agonist WIN 55, 212-2 group (WIN group). Cerebral I/R was induced by middle cerebral artery occlusion (MCAO) in anesthetized animals. In EA group, EA preconditioning was performed, and the acupoint Baihui (GV20) was stimulated for 30 min with disperse-dense waves, the intensity of 1 mA and frequency of 2/15 Hz once a day for 5 consecutive days, and the model of cerebral I/R injury was developed at 24 h after the last EA. In AM251+ EA group, CB1R antagonist AM251 1 mg/kg was intraperitoneally injected at 30 min before each stimulation, and the remaining operations were the same as those previously described in EA group. CB1R agonist WIN 55, 212-2 1.5 mg/kg was intraperitoneally injected for 5 consecutive days, and the model of cerebral I/R injury was prepared at 24 h after the last injection in WIN group. Neurological behavior was assessed and scored at 3 days of reperfusion. Then the rats were sacrificed, and brains were removed, and the infarct volume was measured by TTC staining, and the tissues in the ischemic penumbra were extracted for determination of the expression of NLRP3, caspase-1 and interleukin-1bata (IL-1β) by Western blot. Results:Compared with Sham group, the percentage of cerebral infarct volume was significantly increased, the neurobehavioral score was decreased, and the expression of NLRP3, caspase-1 and IL-1β was up-regulated in I/R group ( P<0.05). Compared with I/R group, the percentage of cerebral infarct volume was significantly decreased, the neurobehavioral score was increased, and the expression of NLRP3, caspase-1 and IL-1β was down-regulated in EA and WIN groups ( P<0.05). Compared with EA group, the percentage of cerebral infarct volume was significantly increased, the neurobehavioral score was decreased, and the expression of NLRP3, caspase-1 and IL-1β was up-regulated in AM251+ EA group ( P<0.05). Conclusions:EA preconditioning may inhibit the activation of NLRP3 inflammasomes by activating CB1R, thus alleviating cerebral I/R injury in rats.