Objective:To explore the learning experience of the medical massive open online course (MOOC) teaching design standard system constructed by the research group in the early stage.Methods:In this study, the questionnaire was adapted from four dimensions: academic analysis, curriculum content design, teaching process design, and teaching evaluation design, including 519 students majoring in clinical medicine of a university who had studied MOOC cases like "Ultra-early Diagnosis and Treatment of Acute Cerebral Infarction" based on the system. SPSS 25.0 was used for statistical analysis.Results:The system had a high degree of recognition in all dimensions, with 64.5% of academic analysis, 57.6% of content design, 54.5% of teaching design process, and 59.3% of teaching evaluation design.Conclusion:The study has found that the medical MOOC teaching design system has good learning experience effect. According to the data feedback, the key teaching design points such as the core factors of learning experience analysis and the suitability of teaching content in the practical operation of teaching design has been explored, providing the practical basis and method reference for the design of medical MOOC teaching design.

In this study,DNA molecular identification technology and chemical fingerprint method were adopted to evaluate the quality system of precise powder decoction pieces (PPDP) of S.suberectus dunn (SSD).ITS2 sequence was taken as DNA barcode to indentify SSD.Different specifications of PPDP were prepared,their dry extract contents were quantified in contrast with that of original slices.Three batches of SSD original slices were gleaned and the content uniformity,fingerprint and similarity evaluation before and after the mixing and pulverization were valued by HPLC-DAD.As a result,ITS2 successfully and accurately identified the SSD in this study.The extract rate of PPDP was 15.5％,1.11 times as much as the original slices.RSD of inter-assay dissolution of cepicatechin from the original slices was 11.0％,which was reduced to 1.0％ after mixing and preparing into PPDP.The relative peak area of the 14 common peaks identified by fingerpringts were larger,while the RSD values significantly decreased.It was concluded that the PPDP of SSD improved the extraction efficiency and uniformity of the original slices,featuring quite prospective in more reasonable and scientific clinical use.

Objective To measure the angular velocity and perpendicular ground reaction force of the ankle joint under different heights with half-squat jumping in parachute training simulation,providing a reliable experiment basis for the preventing of ankle injury.Methods A total of 18 volunteers participated in this study.The experimental group included 9 male with experience of parachute landing,while the other 9 male without experience of parachute landing were assigned to the control group.Each subject was instructed to jump off a platform with a height of 30 cm and 60 cm and land on a hard surface in a half-squat posture.The dynamic landing process was recorded with a high speed camera and the biomechanical data was collected and analyzed,including perpendicular ground reaction force,angular displacement,velocity and acting time.Results From 30 cm's height,the ankle angular displacement of the control group was significantly larger than the experimental group (25.73°± 8.13° vs 20.05°± 12.27°,P ＜ 0.05).The perpendicular ground reaction force of the control group was significantly smaller than the experimental group (3 372.4±748.6 N vs 5 181.5±1 726.2 N,P ＜ 0.05).The acting time of the control group was significantly longer than the ex perimental group (0.049±0.015 s vs 0.012±0.004 s,P ＜ 0.05).The buffer time of the control group was significantly shorter than the experimental group (1.397±0.746 s vs 1.737±0.451 s,P ＜ 0.05).From 60 cm's height,the ankle angular velocity of the control group was significantly higher than the experimental group (25.45± 15.01 °/s vs 16.51 ±4.18 °/s,P ＜ 0.05).The perpendicular ground reaction force of the control group was significantly smaller than the experimental group (4 616.0±1 124.7 N vs 7 119.5±2 307.4 N,P ＜ 0.05).The acting time of the control group was significantly longer than the experimental group (0.048±0.013 s vs 0.015±0.006 s,P ＜ 0.05).The buffer time of the control group was significantly shorter than the experimental group (0.922±0.347 s vs 1.617±0.547 s,P ＜ 0.05).Conclusion Jumping from different heights,the experinental group was larger in perpendicular ground reaction force but smaller in the angular velocity and displacement than the control group.There was a shorter acting time and a longer buffer time in the experimental group than the control group.

OBJECTIVE: To assess the effect of CPAP therapy on sleep quality and quality of life in patients with moderate or severe OSAHS. METHOD: Seventy-two patients diagnosed as OSAHS by polysomnography (PSG) were assigned to receive CPAP therapy for 3 months. At baseline and three months after treatment patients underwent polysomnography (PSG). Analyze the results of PSG, sleep quality, excessive daytime sleepiness, quality of life and the general well-being. RESULT: The lowest average oxygen saturation and the average blood oxygen saturation improved significantly after CPAP therapy, and the longest sleep apnea time and AHI decreased obviously (P < 0.01). Except body pain, the other seven dimensions of SF-36 improved obviously (P < 0.01); ESS, PSQI and GWB also improved (P < 0.05). CONCLUSION For patients with moderate or severe OSAHS, CPAP therapy can obviously improve the sleep quality, excessive daytime sleepiness, improve patients' life quality and the general well-being.
Continuous Positive Airway Pressure ; Humans ; Oximetry ; Polysomnography ; Quality of Life ; Sleep Apnea, Obstructive ; therapy

To study the chemical constituents of the inflorescences of Coreopsis tinctoria from Xinjiang, isolation and purification of constituents were carried out by column chromatography on macroporous resin (D101) , MCI gel, MDS gel, silica gel, Sephadex LH-20 and semi-preparative HPLC. The structures of the compounds were identified by physicchemical properties and spectral data analysis. Fourteen compounds were isolated and identified as coretinterpenoid A (1), coretinphenol (2), quercetin (3), quercetin-3-O-β-glucopyranoside (4), luteolin (5), taxifolin (6), 7, 3', 5'-trihydroxyflavanone (7), isookanin (8), isookanin-7-O-β-D-glucopyranoside (9), 5, 7, 3', 5'-tetrahydroxyflavanone-7-O-β-D-glucopyranoside (10), butein (11), okanin (12), sulfuretin (13), and linocinnamarin (14). Compound 1 was a new isabolane-type sesquiterpenoid and compounds 4, 10 and 13 were isolated from this plant for the first time.
Coreopsis ; chemistry ; Sesquiterpenes ; chemistry ; isolation & purification

The expressions of vimentin and NF-?B were detected in thyroid tissue by immuno- histoehemistry in 26 cases with Hashimoto′s thyroiditis and 9 normal subjects.The results showed that there was a significantly increased expression of vimentin in Hashimoto′s thyroiditis as compared with the normal controls.It indicated that epithelial-mesenchymal transformation existed in follicular epithelial ceils of Hashimoto′s thyroiditis. Furthermore,the expression of vimentin was closely related with NF-?B.

The objective of this study was to explore the effect of mesenchymal stem cells (MSC) on HL-60 proliferation and its molecular mechanism. HL-60 cells co-cultivated with MSC were used as experiment group, and the cells cultivated solely were taken as control group. HL-60 cells in the two groups were counted at different time. The time-quantity curve was drawn. The cell cycle and apoptosis ratio of HL-60 cells were compared between the two groups and expressions of Survivin and Bcl-2 protein were detected by flow cytometry. The results showed that HL-60 cells cultivated with MSC were obviously inhibited, especially on day 5 and 7 (P < 0.01). HL-60 cells were distributed on the phase of G(0)/G(1) [control group (47.0 ± 9.0)% vs experiment group (70.0 ± 16.0)%, P = 0.003], and apoptotic peak appeared. Both of Survivin and Bcl-2 protein expressions in HL-60 cells decreased [Bcl-2 protein in control group (63.0 ± 9.1)% vs experiment group (50.0 ± 14.1)%, P = 0.045; Survivin in control group (94.0 ± 9.3)% vs experiment group (77.0 ± 11.8)%, P = 0.006]. It is concluded that the MSC can inhibit HL-60 cell proliferation, and promote HL-60 cell apoptosis.
Adult ; Apoptosis ; Bone Marrow Cells ; cytology ; Cell Proliferation ; Coculture Techniques ; Flow Cytometry ; HL-60 Cells ; Humans ; Inhibitor of Apoptosis Proteins ; metabolism ; Mesenchymal Stromal Cells ; cytology ; Middle Aged ; Proto-Oncogene Proteins c-bcl-2 ; metabolism

This paper aims to construct a Bayesian(BN) fault diagnosis model of traditional Chinese medicine dry granulation based on the failure model and effect analysis(FMEA), effectively control risk factors and ensure the quality of granules.Firstly, the risk ana-lysis of dry granulation process was carried out with FMEA, and the selected medium and high risk factors were taken as node variables to establish corresponding BN network with causality.According to the mathematical reasoning method of probability theory, the model was accurately inferred and verified by Netica, and the granule nonconformance was used as the evidence for reversed reasoning to determine the most likely cause of the failure that affected the granule quality.The BN fault diagnosis model of traditional Chinese medicine dry gra-nulation was established based on the medium and high risk factors of process, prescription and equipment screened out by FMEA, such as roller pressure, raw material viscosity, clearance between rollers in the paper.The fault diagnosis of traditional Chinese medicine dry granulation process was then carried out according to the model, and the posterior probability of each node under the premise of nonconforming granule quality was obtained.This method could provide strong support for operators to quickly eliminate faults and make decisions, so as to improve the efficiency and accuracy for fault diagnosis and prediction, with innovation in its application.
Bayes Theorem ; Medicine, Chinese Traditional ; Probability

Objective To assess the efficacy and safety of mifepristone combined with oral or vaginal misoprostol for termination of pregnancy between 8 and 16 weeks of gestation. Methods This was a randomized, multi-center, open clinical trial. A total of 625 women at 8-16 weeks of gestation were randomized to receive 200 mg oral mifepristone followed by either oral misoprostol 400 μg every 3 hours or vaginal misoprostol 400μg every 6 hours for a maximum of 4 doses 36-48 hours later. There were 417 women in oral group with 198 at 8-9 weeks and 219 at 10-16 weeks, while 208 women in vaginal group with 99 at 8-9 weeks and 109 at 10-16 weeks. The outcome measures were the success abortion rate, induction to abortion interval, the amount of bleeding, reoccurrence of menstruation and adverse events. Results Abortion rate was significantly higher in vaginal group [98.1% (202/206)] than that in oral group [94.0%(390/415), P=0.023]; concerning termination of pregnancy at 8-9 weeks and 10-16 weeks respectively, there were no significant differences between oral and vaginal groups (P=0.156, P=0.073). The induction to abortion interval was no significant difference in oral and vaginal group in different gestational weeks ( P=0.238, P=0.273). The average induction to abortion interval was (4.1 ± 6.6) hours and (6.0 ± 4.5) hours respectively in terminating 8-9 weeks and 10-16 weeks of gestation. Concerning the amount of bleeding within 2 hours of placenta expulsion, there was significant difference between oral group [(63±46) ml] and vaginal group [(55 ± 45) ml] in terminating 8-9 weeks of gestation (P=0.047), while there was no significant difference between groups in terminating 10-16 weeks of gestation [oral group (76 ± 52) ml versus vaginal group (76 ± 61) ml, P=0.507]. The reoccurrence of menstruation was about 37 days in both oral and vaginal groups. Two cases of incomplete abortion were serious adverse events (SAE) relating to treatment. The common adverse events (AE) of nausea and vomiting were significantly higher in oral group [57.2% (239/417), 36.3% (151/417)] than those in vaginal group [45.4% (94/208), 26.1% (54/208); P=0.005, 0.011]. Conclusion Oral or vaginal misoprostol combined with mifepristone, is effective and safe for termination of pregnancy between 8 and 16 weeks of gestation.

This study was aimed to compare the influences of bone marrow mesenchymal stem cells (BMMSCs) from patients with acute myeloid leukemia (AML), AML patients with complete remission (CR) and non-leukemia patients on HL-60 cells. The HL-60 cells were divided into three groups: group of co-cultivation with BMMSCs of AML patients, group of co-cultivation with BMMSCs of AML patients with CR and group of co-cultivation with BMMSCs of non-leukemia patients. The count of HL-60 cells, the CD11b and survivin expression of HL-60 cells, the cell cycle distribution of the HL-60 cells in 3 groups were compared by flow cytometry, the morphology and differentiation rate of HL-60 cells in 3 groups were observed and compared by microscopy. The results showed that there were no differences in HL-60 cell count at five and seven days, in HL-60 distribution at the G(0)/G(1) phase, in survivin and CD 11b expressions in 3 groups. All cells of 3 groups began to mature, and the differentiation rates in 3 groups were 18.0 +/- 3, 17.0 +/- 1.3 and 19.0 +/- 2.0 respectively, therefore there were no significant differences between the 3 groups (p = 0.23). It is concluded that there is no influence of BMMSCs in 3 groups on the proliferation and differentiation of HL-60 cells.
Bone Marrow Cells ; cytology ; Cell Differentiation ; Cell Proliferation ; Coculture Techniques ; HL-60 Cells ; Humans ; Leukemia ; pathology ; Mesenchymal Stromal Cells ; cytology