Based on the selective permeability of cationic exchange membrane and the characteristic of electri cal driven, a new and non-damage apparatus that can be used to separate compounds with different electric property was built to capture and enrich DNA.λ-DNA, as a model compound, was used to study the charac teristic of capturing and enriching DNA in this device.Factors that might affect the efficiency such as voltage and flow speed were optimized and gel electrophoresis was done to study if DNA was denaturation, PCR was done to prove the concentration can be used to further bioanalysis.Results were got; the apparatus could used to capture and enrich DNA scathelessly under the condition of low-voltage, the concentrate multiple was 62, and the recovery efficiency was accessible to 47%, concentration can be used for the next bioanalysis.Auto matic, easy to handle and little organic reagent using made it be advantageous, it could be miniatured to com bine with other biochips.This method had a large application space in field of DNA extraction, purification and concentration.

OBJECTIVETo detect alkaloids in Ipecac by direct analysis in real time tandem mass spectrometry (DART-MS) without pre-treatment and chromatographic separation.

METHODUnder the optimum conditions, DART-MS characteristic spectra were collected for tablet of Ipecac powder, Ipecac stems and leaves by full scanning, and secondary spectra were adopted for identifying alkaloids. The multiple reaction monitoring mode was adopted to determine the mass spectrum peak intensity of determinands on the surface of determined samples, in order to calculate their average content in samples.

RESULTSpectra of tablet of Ipecac powder and Ipecac stems showed remarkable ionized ion peaks of emetine and cephaeline at m/z 481 and 467, while spectra of leaves showed ionized ion peaks of other alkaloids at m/z 479 and 465. Furthermore, the quantitative analysis was also demonstrated with good reproducibility and linear relationship.

CONCLUSIONThe mode can play a role in rapid determination of medicinal materials and prepared herbal medicines and real-time rapid quantitative analysis on intermediates and preparations.

Alkaloids ; analysis ; Ipecac ; analysis ; Reproducibility of Results ; Tandem Mass Spectrometry ; methods ; Time Factors

Objective: To investigate the relationship between core members' social capital and performance among HIV/AIDS-related community-based organizations (CBO). Methods: From July to December in 2015, a total of 327 core members from 212 HIV/AIDS-related CBO in 8 provinces were recruited based on the prevalence of HIV/AIDS (e.g., Yunnan, Hunan, and Sichuan are in high epidemic level; Anhui, Hubei, Shandong, and Jilin are in middle epidemic level; and Gansu is in low epidemic level) by multistage stratified cluster sampling and convenient sampling method. A questionnaire was administered in this study, including general demographic information, core members' social capital, individual performance and organizational performance. Multivariate logistic regression model was used to analyze the relationship between core members' social capital and performance among CBO. Results: Among the 327 individuals, the proportion of male was 201(61.47%). The proportion of core members from grassroots CBO was 66.97% (219/327). Core members from non-grassroots organizations were more likely to publish articles, the OR (95%CI) was 2.58 (1.30-5.14); Social network had a positive impact on the AIDS experts, the OR (95%CI) was 2.41(1.47-3.95); Core members from registered CBO were more likely to secure funding for the organization, the OR (95%CI) was 3.42 (1.65-7.10); Social network and the core members from high endemic areas were significantly correlated with the number of HIV/AIDS patients, the OR (95%CI) were 2.79 (1.27-6.14) and 1.99 (1.21-3.27). Conclusions We should use the core members' social network to establish relationship and communication with organizations and institutions, ultimately accelerating the growth of HIV/AIDS prevention and care.

Objective: To investigate the expression of mismatch repair (MMR) proteins (MLH1, MSH2, MSH6 and PMS2) in colorectal cancers and to explore the relationship between MMR expression and clinicopathologic features. Methods: Six hundred and fifty-eight colon cancers were collected from January 2016 to January 2017 at Shengjing Hospital of China Medical University. Of the 658 patients there were 409 male and 249 female. The patients were 20 to 92 years old, with average age of (63±5) years old. Expression of MLH1, MSH2, MSH6 and PMS2 protein was detected by immunohistochemical method. Immunohistochemistry for BRAF V600E was performed in colorectal cancers with loss of MLH1 protein expression. Relationship between MMR protein expression and clinicopathologic features was analyzed statistically. Results: Forty-four cases of 658 cases (6.7%) lost at least one MMR protein expression. Expression deficiency rates of MLH1, MSH2, MSH6 and PMS2 were 4.1%(27/658), 2.3%(15/658), 2.4% (16/658), and 4.3% (28/658), respectively. MMR expression deficiency mainly consisted of combined loss of MLH1/PMS2 (61.4%, 27/44) and MSH2/MSH6 (34.1%, 15/44). Two unique mutations were identified including one MSH6-deficient(2.3%, 1/44) and PMS2-deficient(2.3%, 1/44). Seven cases (25.9%, 7/27) had positive BRAF V600E expression, suggesting BRAF gene mutation related sporadic colorectal cancers. No correlation was observed between the expression of MMR and depth of tumor infiltration, lymph node metastasis, vascular tumor emboli, clinical stage or hematogenous metastasis (P>0.05). MMR status was associated with tumor cell differentiation, histological type and tumor location (P<0.01). Tumors with combined MLH1 and PMS2 loss were associated with mucinous differentiation (P=0.049, P=0.013) and located in the right hemi-colon (P=0.006, P=0.002). Combined MSH2 and PMS2 loss was related to gender, while loss of MSH2 protein was observed more frequently in female patients (P=0.048) and loss of PMS2 protein was seen more frequently in male patients (P=0.031). Conclusions Patients with MMR protein deficiency have a younger onset age and poorly differentiated tumors. Most tumors are located in the right hemi-colon and have mucinous differentiation.

Objective:To explore the application effect of traditional Chinese medicine comprehensive nursing on elderly patients with coronary heart disease(qi stagnation and blood stasis type) constipation.Methods:A total of 126 elderly patients with coronary heart disease (qi stagnation and blood stasis type) constipation were divided into the control group and the experimental group by random digits table method, 63 cases each; the control group received routine nursing, and the experimental group was given traditional Chinese medicine comprehensive nursing; comparing the two groups of patients defecation, mental state, recurrence rate, and nursing satisfaction.Results:There was no significant difference in defecation frequency, each defecation time, defecation smoothness score, fecal trait score, fall inflated score, and self-Rating Anxiety Scale (SAS) score( P >0.05). After one month of nursing, defecation frequency, each defecation time, defecation smoothness score, fecal trait score, fall inflated score, and SAS score were (4.09±0.86) times/week, (5.12±1.24) min/time, (2.57±0.39) points, (1.53±0.31) points, (0.97±0.21) points, (49.27±4.15)points in the experimental group, (3.12±0.61) times/week, (6.87±1.52) min/time, (2.59±0.36) points, (2.02±0.44) points, (1.29±0.27) points, (54.42±6.01) points in the control group, the differences were significant ( t values were -6.638-7.081, all P<0.05). Within 1 month after nursing, the recurrence rate of constipation in the experimental group (14.3%, 9/63) was lower than that in the control group (74.6%, 47/63) , and the satisfaction rate of the experimental group (98.4%, 62/63) was higher than that in the control group (69.8%, 44/63) , the differences were significant(× 2 values were 46.414, 19.257, P<0.05). Conclusions:Traditional Chinese medicine comprehensive care for elderly patients with coronary heart disease (qi stagnation and blood stasis type) constipation can significantly improve their defecation and psychological state, and can reduce the recurrence rate and improve the patient's satisfaction with nursing, which deserves further clinical application and research.

Objective To study the effects of binary cardiac rehabilitation (CR) composed of hospital-based and home-based CR in patients after acute myocardial infarction (AMI) evaluated by six-minute walking distance (6MWD). Methods A total of 38 post-MI patients were divided into two groups, namely conventional CR group (n=20) and binary CR group (n=18). In the first seven days, CR training was carried out in all 38 patients in our hospital, and then 20 patients were kept at CR training in the hospital (hospital-based CR group), whereas the remaining 18 patients (binary CR group) got tele-monitored walking training at home for eight weeks (binary model). Before discharge from hospital based CR or after 8 weeks CR at home, all patients received Cardiopulmonary Exercise Testing and Six-minute Walk Test, and the data of patients' body mass index (BMI),thyroid function, serum lipid metabolism and echocardiography were collected before and after CR. Results After CR, BMI and low density lipoprotein (LDL) decrease in both groups compared with those before CR[hospital-based group: BMI, (25.99±3.36)kg/m2 vs. (23.04±3.72) kg/m2,P＜0.05; LDL, (3.40±1.38) mg/dl vs. (2.04±0.73)mg/ dl,P＜0.01; binary group: BMI, (24.84±2.70) kg/m2 vs. (22.88±2.56) kg/m2,P＜0.05; LDL, (3.40±1.01) mg/dl vs. (92.11±0.37) mg/dl,P＜0.01]. After 8 weeks CR at home or hospital based CR until discharge, the anaerobic threshold (AT), maximum rate of oxygen consumption (VO2max),metabolic equivalent (MET) and 6MWD improved significantly in both groups compared with those at 7 days after CR in hospital [Hospital-based group: AT, (12.37±1.53) mL/(kg. min) vs. (14.77±1.57) mL/(kg. min); VO2max (17.87± 1.66 mL/(kg. min) vs. (20.73±2.14) mL/(kg. min); MET (5.02±0.36) vs. (6.09±0.53); 6MWD (500±53.36) m vs. (582.5±57.6) m,P＜0.01; Binary group: AT, (12.56±1.11) mL/(kg·min) vs. (14.30±1.23) mL/(kg. min); V02max, (17.28±1.38) mL/(kg. min) vs. (20.02±1.37) mL/(kg. min); MET, (5.07±0.47)vs (5.94±0.46); 6MWD,(511.4±50.96) m vs. (590.3±56.1)m,P＜0.01]. There was no significant difference in CR effects observed between two groups (P＞0.05). Conclusions In post-MI patients,a binary model of CR training improved physical capacity and was a similarly effective form of CR as a entirely hospital-based approach. A home-based tele-monitored program facilitated patients' adherence to CR. The 6 minute walk experiment is economical and good evaluation on the CR effect of binary cardiac rehabilitation.

ObjectiveTo investigate the effects of Jiaohong pills （JHP） and its prescription， Pericarpium Zanthoxyli （PZ） and Rehmanniae Radix （RR） cognitive dysfunction in scopolamine-induced Alzheimer's disease （AD） mice and its mechanism through pharmacodynamic and metabolomics study. MethodThe animal model of AD induced by scopolamine was established and treated with PZ， RG and JHP， respectively. The effects of JHP and its formulations were investigated by open field test， water maze test， object recognition test， avoidance test， cholinergic system and oxidative stress related biochemical test. Untargeted metabolomics analysis of cerebral cortex was performed by ultra-performance liquid chromatography-Quadrupole/Orbitrap high resolution mass spectrometry （UPLC Q-Exactive Orbitrap MS）. ResultThe behavioral data showed that， compared with the model group， the discrimination indexes of the high dose of JHP， PZ and RR groups was significantly increased （P<0.05）. The staging rate of Morris water maze test in the PZ， RR， high and low dose groups of JHP was significantly increased （P<0.05， P<0.01）， the crossing numbers in the PZ， JHP high and low dose groups were significantly increased （P<0.05， P<0.01）； the number of errors in the avoidance test were significantly reduced in the PZ and high-dose JHP groups （P<0.01）， and the error latencies were significantly increased in the JHP and its prescription drug groups （P<0.01）. Compared with the model group， the activities of acetylcholinesterase in the cerebral cortex of the two doses of JHP group and the PZ group were significantly increased （P<0.05， P<0.01）， and the activity of acetylcholinesterase in the high-dose JHP group was significantly decreased （P<0.05）， and the level of acetylcholine was significantly increased （P<0.01）. At the same time， the contents of malondialdehyde in the serum of the two dose groups of JHP decreased significantly （P<0.05， P<0.01）. The results of metabolomics study of cerebral cortex showed that 149 differential metabolites were identified between the JHP group and the model group， which were involved in neurotransmitter metabolism， energy metabolism， oxidative stress and amino acid metabolism. ConclusionJHP and its prescription can antagonize scopolamine-induced cognitive dysfunction， regulate cholinergic system， and reduce oxidative stress damage. The mechanism of its therapeutic effect on AD is related to the regulation of neurotransmitter， energy， amino acid metabolism， and improvement of oxidative stress.