Objective To establish a high performance liquid chromatography method to detect the concentration of lamotrigine in blood dialysate and investigate in vitro recovery of lamotrigine and the factors.Select the microdialysis conditions that apply to the animal experiment and guide the stability study of in vivo recovery.Methods Positive dialysis and retrodialysis were used for the examination of lamotrigine in vitro recovery and the influencing factors such as flow rate, concentration, temperature and time.Filtered out the best conditions that apply to the in vivo experiment.Used the retrodialysis to determine the in vivo recovery and its stability.Results There was no significant difference between relative recovery and relative loss in the same flow rate.The concentration had no obvious effect on relative recovery.At the same condition,relative recovery decreased with the increase of the flow rate and increased with the temperature.The in vivo recovery had a good stability of 6.5 hours when the flow rate and stabilization time were set at 2μL/min and 1.5 h, respectivily.Conclusion Microdialysis technique can be used for the pharmacokinetic study of lamotrigine.Retrodialysis can be used for the determination of the lamotrigine in vivo recovery.

Objective:To analyze the inhibiting mechanism of microRNA-199a/b-3p(miR-199)on cell proliferation of triple negative breast cancer(TNBC)cells.Methods:Expression of miR199 in BT549 and MDA-MB-231 cells transfected with miR-199a/b-3p was detected by qRT-PCR.The proliferation of BT549 and MDA-MB-231 cells transfected with miR-199 were analysed by MTT as-say.Cell cycle of TNBC cells transfected with miR-199 was detected by Flow Cytometry assay.Results:MiR-199a/b-3p could suppress the proliferation of BT549 and MDA-MB-231 cells.Comparing with normal control,the proliferation rate were up to(41.02±2.34)%and(28.42 ±6.70 )%,and the cell cycle were arrest at G 1 phase.Conclusion: MiR-199a/b-3p could suppress the proliferation of TNBC,and may be a promising anti-cancer drug for TNBC.

ObjectiveTo determine the utility of the simple body weight support training apparatus used to improve ambulatory function in patients with hemiplegia or paraplegia.Methods38 cases with hemiplegia or paraplegia were randomly divided into control(C,n=10),regular body weight support treadmill training group(R,n=14),simple body weight support training group(S,n=14).All the patients received comprehensive rehabilitation for 6 months.Function Independence Measured(FIM),10 meters ambulatory velocity,Fugl-Meyer Assessment(FMA),Barthel Index(BI) were used to evaluate the effect of training.ResultsThe FIM scores and ambulatory velocity of the patients in group R and S improved significantly compared with that of group C.There was no difference of FIM scores and ambulatory velocity between group R and S.ConclusionThe effect of simple body weight support training on improving the ambulatory function is similar to regular body weight support treadmill.

BACKGROUND:Both acupuncture and moxibustion and drug ale effective methods to treat simple obesity.Whether electroacupuncture is different from sibutramine to affect adipocyte products in obese organisms?OBJECTIVE:To observe the different effects of electroacupuncture and sibutramine on adipocyte produces in obesity rats and to investigate the mechanism of weight reduction by acupuncture and moxibustion.DESIGN:Layering-randomized controlled study.SETTING:Laboratory of Acupuncture and Pharmacology.Nanjing University of Chinese Medicine.MATERIALS:12045-day-old male SD rats were provided by Shanghai Experimental Animal Center.The experiment was in accordance with animal ethics standards.Sibutramine hyrdrochloride capsule was made in Fuling Pharmaceutical Factory of Taiji Group(batch number:X20010279).Electro-acupuncture apparatus(LH402A acupoint neutoelectrical stimulation equipment)was made in Beijing Huawei Chanye Developing Company.METHODS:This study was performed at the Laboratory of Acupuncture and Pharmacology,and Expefimental Animal Center,Nanjing University of Chinese Medicine from October 2004 to November 2006.①100 male SD rats underwent high-fat diet.Fifty-four alimentary obesity rats were randomly divided into electroacupuncture group,sibutramine group and obesity group.wim 18 rats in each group.Another 18 rats were regarded as a normal group.②Rats in the electroacupuncture group were given electrical stimulation(2/15 Hz,4 mA)at lateral Housanli and Neiting acupoints,contralateral alternation every other day.Rats were fixed with self-made binding instrument,and rats maintained a consciousness but not an intense struggle.The electricai stimulation lasted for 15 minutes every day,one day was an interval every 6 days.and the electroacupuncture was given for 49 days and 42 times in total.Rats in the sibutramine group were ingragastrically administrated with 0.2 g/L sibutramine hydrochloride(2.0 mg/kg/d).Rats in the control group and obesity groups were fixed the same as electroacupuncture group but not given electrical stimulation.MAIN OUTCoME MEASURES:①Obese marker:To detect body mass,body length,weight reduction rate and body mass/body fat mass,and to measure total cholesterol(TC),high density lipoprotein cholesterol(HDL-C)and triacylglycerol (TG)with biochemical chromatometry;②insulin sensitivity index:To measure fasting blood glucose,insulin and insulin sensitivity index with enzyme-linked immunosorbent assay;③adipocyte secreting regulatory substance level:To measure serum resistin,leptin,adiponectin,tumor necrosis factor-α(TNF-α),interleukin-6(IL-6)and its soluble receptor level with enzyme-linked immunosorbent assay.RESULTS:Among 120 rats,54 alimentary obesity rat models and 18 normal rats were included in the final analysis.①Obesemarker:Bodymass,bodyfatmass,cholesterol and TG levels in the obesity group were significantly higher than in the normal group(P＜0.01).Body mass,body fat mass,body mass/body fat mass,cholesterol and TG levels in the electroacupuncture group were significantly lower than in the obesity group(P＜0.01).TG level in the sibutramine group was significantly lower than in the obesity group(P＜0.01).Weight reduction rate in the electroacupuncture group was significantly higher than in the sibutramine group(P＜0.01).Body mass/body fat mass in the electroacupuncture group was significantly lower than in the sibutramine group(P＜0.01).②Insulin sensitivity:Blood glucose and serum insulin levels in the obesity group were significantly higher than in the normal group,and insulin sensitivity index was significantly lower than in the normal group(P＜0.01).Blood glucose and insulin levels in the electroacupuncture and sibutramine groups were significantly lower than in the obesity group,but insulin sensitivity index was significantly higher than in the obesity group(P＜0.01).③Adipocyte secreting regulatory substance level:Adiponectin in the electroacupuncture group was significantly higher than in the obesity group (P＜0.01).Resistin and TNF-αin the electroacupuncture group was significantly lower than in the obesity grollp(P＜0.01).Resistin level in the sibutramine group was significantly lower than in the obesity group(P＜0.01).CONCLUSION:The effect of electroacupuncture on abnormally secretary products of adipose tissues in obesity rats is superior to the effect of sibutramine.This may be one of important mechanisms of weight reduction by acupuncture and moxibustion,and prevention and cure of obesity and its related diseases.

The pathogeneses of oral squamous cell carcinoma and most oral mucosal diseases are unclear. Therefore, establishing animal models with similar pathogeneses is significant for clinical prevention, diagnosis, and treatment of related diseases. At present, scholars have established animal models for different focuses. This paper aims to introduce the methods for establishing animal models of oral squamous cell carcinoma and common oral mucosal diseases, compare their advantages and disadvantages, and provide evidence for related basic research.

Objective To learn the diagnosis and treatment of brucellosis patients in Suide County of Shaanxi Province in 2015,and to provide a scientific basis for making accurate prevention and control measures.Methods All the cases diagnosed as brucellosis in Suide County from January 1 to December 31 in 2015 and lived in this county were retrospectively investigated by case questionnaire survey,including basic information,medical procedures,and epidemiological contacts.Descriptive statistical analysis was performed using SPSS 18.0 software.Results In 2015,75 cases of brucellosis were diagnosed in Suide County,75 questionnaires were distributed,with 53 completed questionnaires returned.The average age of respondents was (49 ± 14) years old,of which 84.9％ (45/53) were male and 94.3％ (50/53) were farmers,except one case was actively monitored by Suide County Centre for Disease Control and Prevention then treated,the rest of the patients were treated after the onset of the disease.Of the 52 patients,one patient was diagnosed after one visit,accounting for 25.0％ (13/52);one patient was diagnosed after at least 4 visits,accounting for 3.8％ (2/52).The cumulative diagnosis rate at provincial-level hospitals was 1/3 and that at disease prevention and control institutions was 92.7％ (51/55),there were no confirmed cases in municipal hospitals,county hospitals,township hospitals,village clinics and individual clinics.For the first reason to see a doctor,65.4％ (34/52) of the patients were fever or accompanied by sweating,fatigue,arthralgia and waist and leg pain.The medians from onset to treatment between the first diagnosis,and 2,3,4 visits were 15,18,27,45 days,respectively;the median from onset to diagnosis was 21 days,ranging from 2 to 182 days.Totally 84.9％ (45/53) patients had a history of exposure to animals,of which 97.8％ (44/45) had contacted the sheep.Conclusions The cases in Suide County are mainly adult male farmers,and the diagnosis rate at hospitals below municipal level is low.It is recommended to strengthen the health intervention of high-risk groups and improve the level of diagnosis and treatment of primary medical staff.

Objective To investigate the ability in diagnosing and reporting brucellosis of primary medical personnel in Suide County of Shaanxi Province,and provide scientific basis for making prevention and control strategies.Methods Convenience sampling method was adopted in October 2016.A questionnaire survey was conducted among the county hospitals,township hospitals,village clinics and individual clinics in Suide County to collect information on the ability in diagnosing and reporting brucellosis of primary medical personnel.The specific content includes the basic information,the awareness of brucellosis diagnosis and reporting capabilities,the situation of brucellosis training,and the views about the diagnosis of brucellosis.SPSS 18.0 software was used to carry out descriptive statistical analysis.Results A total of 77 primary healthcare workers were surveyed.Their average age was (38 ± 9) years old,57.1％ (44/77) workers were undergraduates,and 53.2％ (41/77) were working in county hospitals.9.1％ (7/77) were completely aware of the major infectious diseases,29.9％ (23/77) were fully aware of the transmission mute,28.6％ (22/77) and 66.2％ (51/77) known the high risk population and the epidemiological history of brucellosis.Twenty-six percent (20/77) of the medical staff were thoroughly aware of the main clinical manifestations,68.8％ (53/77) were clearly aware of the clinical stage of brucellosis;24.7％ (19/77) could understand the specificity of the laboratory tests of brucellosis;44.2％ (34/77) had a strong ability in reporting brucellosis.71.4％ (55/77) of the medical staff received the training about the knowledge of brucellosis;49.4％ (38/77) thought that the clinical manifestation was the most difficult to grasp in the criteria about diagnosis of brucellosis.Conclusions The ability of diagnosis and reporting of brucellosis is weak in primary healthcare workers in Suide County,the epidemiology and clinical knowledge of brucellosis are not comprehensive.It is suggested to strengthen the understanding of brucellosis among medical staff,especially in primary healthcare workers.We should carry out the training of disease epidemiology and clinical knowledge of brucellosis and standardize patient management.

Objective: To develop a machine learning (ML) pipeline based on radiomics to predict Coronavirus Disease 2019 (COVID-19) severity and the future deterioration to critical illness using CT and clinical variables. Materials and Methods: Clinical data were collected from 981 patients from a multi-institutional international cohort with real-time polymerase chain reaction-confirmed COVID-19. Radiomics features were extracted from chest CT of the patients. The data of the cohort were randomly divided into training, validation, and test sets using a 7:1:2 ratio. A ML pipeline consisting of a model to predict severity and time-to-event model to predict progression to critical illness were trained on radiomics features and clinical variables. The receiver operating characteristic area under the curve (ROC-AUC), concordance index (C-index), and time-dependent ROC-AUC were calculated to determine model performance, which was compared with consensus CT severity scores obtained by visual interpretation by radiologists. Results: Among 981 patients with confirmed COVID-19, 274 patients developed critical illness. Radiomics features and clinical variables resulted in the best performance for the prediction of disease severity with a highest test ROC-AUC of 0.76 compared with 0.70 (0.76 vs. 0.70, p = 0.023) for visual CT severity score and clinical variables. The progression prediction model achieved a test C-index of 0.868 when it was based on the combination of CT radiomics and clinical variables compared with 0.767 when based on CT radiomics features alone (p < 0.001), 0.847 when based on clinical variables alone (p = 0.110), and 0.860 when based on the combination of visual CT severity scores and clinical variables (p = 0.549). Furthermore, the model based on the combination of CT radiomics and clinical variables achieved time-dependent ROC-AUCs of 0.897, 0.933, and 0.927 for the prediction of progression risks at 3, 5 and 7 days, respectively. Conclusion CT radiomics features combined with clinical variables were predictive of COVID-19 severity and progression to critical illness with fairly high accuracy.

Objective: To develop a machine learning (ML) pipeline based on radiomics to predict Coronavirus Disease 2019 (COVID-19) severity and the future deterioration to critical illness using CT and clinical variables. Materials and Methods: Clinical data were collected from 981 patients from a multi-institutional international cohort with real-time polymerase chain reaction-confirmed COVID-19. Radiomics features were extracted from chest CT of the patients. The data of the cohort were randomly divided into training, validation, and test sets using a 7:1:2 ratio. A ML pipeline consisting of a model to predict severity and time-to-event model to predict progression to critical illness were trained on radiomics features and clinical variables. The receiver operating characteristic area under the curve (ROC-AUC), concordance index (C-index), and time-dependent ROC-AUC were calculated to determine model performance, which was compared with consensus CT severity scores obtained by visual interpretation by radiologists. Results: Among 981 patients with confirmed COVID-19, 274 patients developed critical illness. Radiomics features and clinical variables resulted in the best performance for the prediction of disease severity with a highest test ROC-AUC of 0.76 compared with 0.70 (0.76 vs. 0.70, p = 0.023) for visual CT severity score and clinical variables. The progression prediction model achieved a test C-index of 0.868 when it was based on the combination of CT radiomics and clinical variables compared with 0.767 when based on CT radiomics features alone (p < 0.001), 0.847 when based on clinical variables alone (p = 0.110), and 0.860 when based on the combination of visual CT severity scores and clinical variables (p = 0.549). Furthermore, the model based on the combination of CT radiomics and clinical variables achieved time-dependent ROC-AUCs of 0.897, 0.933, and 0.927 for the prediction of progression risks at 3, 5 and 7 days, respectively. Conclusion CT radiomics features combined with clinical variables were predictive of COVID-19 severity and progression to critical illness with fairly high accuracy.

To understand the development of medical social work in China, and provide reference and basis for promoting medical social work in the next stage.
 Methods: A random sampling method was used to survey and analyze the data from questionnaires distributed to hospitals at or above the second level in China.
 Results: Medical social work had been carried out in all parts of the country, but the development was not balanced with the establishment of specialized agencies accounting for about 7.9% of the total survey. Only 17.5% of the hospitals carried out medical social work as a routine work. The medical social work service mainly included volunteer operation and management, patient psychological counseling, and so on.
 Conclusion: The development of medical social work in hospitals in China is still in its infancy, and the regional development is not balanced. Lack of professionals, unclear responsibilities of medical social workers and low social identity of medical social work are the main factors restricting development.
Asian Continental Ancestry Group ; China ; Hospitals ; Humans ; Social Work ; Surveys and Questionnaires