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ObjectiveTo investigate the effect of rutin on the browning of 3T3-L1 preadipocytes and the mechanism. MethodCell counting kit-8 （CCK-8） assay was used to detect the effect of different concentration of rutin （3.125， 6.25， 12.5， 25， 50， 100， 200 μmol·L-1） on 3T3-L1 cell activity， and Western blot to examine the effect of rutin （12.5， 25， 50 μmol·L-1） on the expression of thermogenesis-associated proteins uncoupling protein 1 （UCP1）， PR domain containing 16 （PRDM16） and peroxisome proliferator-activated receptor γ coactivator-1α （PGC-1α） in adipocytes. After the optimal concentration of rutin was determined， the effect of rutin on lipid droplet formation in adipocytes was observed based on oil red O staining， and the expression of nuclear respiratory factor 1 （NRF1）， nuclear respiratory factor 2 （NRF2） and mitochondrial transcription factor A （TFAM）， which were the landmark proteins of mitochondrial biosynthesis， was detected by Western blot. ResultCompared with the blank group， 200 μmol·L-1 rutin inhibited 3T3-L1 cell activity （P<0.01）. Compared with the blank group， at the concentration of 12.5， 25， 50 μmol·L-1 rutin significantly promoted the expression of thermogenesis-associated proteins （UCP1， PRDM16， and PGC-1α） （P<0.01）， which was determined as the optimal concentration. Compared with the blank group， 50 μmol·L-1 rutin significantly increased the immunofluorescence intensity of mitochondrial UCP1 protein in 3T3-L1 cells （P<0.01） and the expression of the markers of mitochondrial biosynthesis （NRF1， NRF2， and TFAM） （P<0.01）. In addition， 50 μmol·L-1 rutin significantly inhibited lipid droplet formation of 3T3-L1 adipocytes （P<0.01）. ConclusionRutin inhibited lipid droplet deposition in 3T3-L1 adipocytes and increased the expression of thermogenesis-related proteins （UCP1， PRDM16， and PGC-1α） and markers of mitochondrial biosynthesis （NRF1， NRF2， and TFAM）， thereby inducing the browning of 3T3-L1 adipocytes. This lays a basis for the development of drugs that safely regulate the browning of white cells.
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ObjectiveTo investigate the medicinal effect of total flavonoids of mulberry leaves on regulating liver lipid metabolism disorder in diabetes mellitus type 2 （T2DM） rats， and the mechanism based on liver peroxidase proliferators activate receptors-α （PPAR-α） and carnitine palmityl transferase-1 （CPT-1） proteins. MethodTotal flavonoids of mulberry leaves were extracted and purified by ethanol extraction + macroporous resin purification and then identified. T2DM rat model was induced by high fat diet （HFD） + streptozocin（STZ）method. Rats with blood glucose ≥ 11.1 mmol·L-1 were divided into three administration groups with the high dose （300 mg·kg-1）， medium dose （150 mg·kg-1）， and low dose （75 mg·kg-1） of total flavonoids of mulberry leaves for 8 weeks， respectively， to observe the weight and blood glucose of the rats. The pathological changes of rat livers were observed by hematoxylin-eosin （HE） staining. Biochemical method was used to detect the levels of total cholesterol （TC）， triglyceride （TG）， low density lipoprotein-cholesterol （LDL-C）， and high density lipoprotein-cholesterol （HDL-C） of blood lipid metabolism in rats. The messenger ribonucleic acid （mRNA） and protein expressions of PPAR-α and CPT-1 were determined by real-time quantitative polymerase chain reaction （Real-time PCR） and Western blot. ResultAfter 8 weeks of intervention of total flavonoids of mulberry leaves， compared with the control group， the food intake， liver index， and fasting blood glucose of rats in the model group increased significantly （P<0.01）. Compared with the model group， the food intake， fasting blood glucose， and liver index of rats in the administration groups decreased significantly （P<0.01）. The results of HE staining showed that the liver tissue structure of rats in the control group was complete and there was no obvious abnormality. The model group showed vacuolar degeneration and inflammatory infiltration of hepatocytes of rats. There was no obvious abnormality in the liver structure of rats in the administration groups. The results of blood lipid showed that compared with the control group， the levels of TC， TG， and LDL-C increased significantly （P<0.01）， but the level of HDL-C decreased significantly （P<0.01） in the model group. Compared with the model group， the levels of TC， TG， and LDL-C decreased significantly （P<0.05， P<0.01）， whereas the level of HDL-C increased significantly （P<0.01） in the administration groups. The results of Real-time PCR showed that compared with the control group， the mRNA expression of PPAR-α and CPT-1 of rats in the model group decreased significantly （P<0.01）. Compared with the model group， the mRNA expressions of PPAR-α and CPT-1 of rats in the high-dose group increased significantly （P<0.01）. The results of Western blot showed that compared with the control group， the protein expressions of PPAR-α and CPT-1 of rats in the model group decreased significantly （P<0.01）. Compared with the model group， the protein expressions of PPAR-α and CPT-1 of rats in the high-dose group increased significantly （P<0.05， P<0.01）. ConclusionTotal flavonoids of mulberry leaves can effectively reduce blood glucose and improve liver lipid metabolism disorder in T2DM rats. The total flavonoids of mulberry leaves could regulate lipid metabolism and play a hypoglycemic role by activating and regulating PPAR-α and CPT-1 proteins and promoting oxidative decomposition of fatty acids.
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Objective To analyze the relationship between scar uterine stress and scar thickness/position by using finite element method, so as to study risk factors of scar uterus rupture. Methods Firstly, SolidWorks was used to establish a three-dimensional (3D) model of the uterus with variable scar thickness and position based on uterine size of the pregnant woman at 40th week of gestation, and then the intrauterine pressure was set in the ANSYS software with pressure range of 4.83-23.9 kPa to calculate the uterine stress. Results During the contraction process, the maximum stress was located in uterine scar, the maximum stress on the uterus with scar thickness smaller than 3 mm was greater than tensile strength of the uterus; 3 mm was used as thickness limit of the lower uterine body. If the thickness was smaller than 3 mm, cesarean section should be selected immediately. Otherwise, transvaginal delivery could be selected. When the scar thickness was 3.0 mm, the maximum stress experienced by the uterus decreased at first and then increased with the distance from the uterine floor increasing. The stress at the uterine scar was the smallest when the distance from the uterine floor was 295 mm; when the scar was 285-305 mm from the uterine floor, the ultimate stress on the scar was smaller than its tensile strength, and it was safer to choose a vaginal delivery. Conclusions Risk factors of scar uterine rupture were studied based on ANSYS finite element analysis. The analysis results were consistent with the clinical data, which provided analysis method and theoretical guidance for the choice of delivery method in clinic.
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Objective To investigate the evaluation and suggestion of the courses of Chinese Medicine for clinical students majoring in medical college. Methods In January 2017, at the end of the Chinese Medicine courses, a total of 35 clinical students of Capital Medical University were investigated through a questionnaire, mainly related to students' understanding of Chinese medicine; evaluation and suggestions for Chinese Medicine education and teaching. Results The majority of students believed that Chinese medicine was safe and effective. The proportion of believing worthing learning that the Chinese medicine accounted for 94.3% (33/35), and who believed Chinese medicine helpful for the clinical work accounted for 82.9% (29/35). However, the proportion of satisfaction with the current teaching method was 60% (21/35). Conclusions Most of the clinical students in this investigation have recognized the role of Chinese medicine, and have shown great interest in studying the course, but they are not satisfied with the current teaching. To improve the teaching quality of Chinese Medicine through the reform should be the direction of teachers' efforts in the future.
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Objective To analyze the correlation of the levels of serum neuron specific enolase (NSE) and S100-β protein with cognitive impairment in patients with moderate traumatic brain injury (mTBI).Methods A retrospective case series study enrolled 87 patients with mTBI treated from January 2015 to October 2016.There were 50 males and 37 females,aged 14-60 years [(37.8-12.6)years].The Glasgow Coma Score (GCS) was 9-12 points,among which were 9-10 points in 36 cases and 11-12 points in 51.The cognitive function was assessed by the Montreal Cognitive Assessment Scale (MoCA).The patients with MoCA ＜ 26 points were assigned into cognitive impairment group (study group,54 cases),while the patients with MoCA ≥ 26 points was assigned into non-cognitive-impairment group (control group,33 cases).The levels of serum NSE and S100-β protein were compared,and the correlation of levels of serum NSE and S100-β protein with cognitive dysfunction (assessed by MoCA and GCS) was analyzed.Results The levels of serum NSE and S100-βprotein were (35.7 ± 11.0) ng/L and (1.8 ± 0.5) ng/L,respectively in study group,which were significant higher than that in control group [(22.6 ±9.4)ng/L and (1.2 ±0.5)ng/L,respectively] (P＜0.01).The levels of NSE [(33.7 ± 10.0)ng/L] and S100-β [(1.7 ± 0.4)ng/L] in patients with GCS 9-10 points were higher than those of NSE [(19.4 ± 9.0) ng/L] and S100-β [(1.3 ± 0.5) ng/L] in patients with GCS 11-12 points (P ＜ 0.01).The levels of serum NSE and S100-β protein in mTBI patients were negatively correlated with the MoCA score (r =-0.693,-0.721,P ＜ 0.05) and GCS (r =-0.527,-0.796,P ＜ 0.05).Conclusion The levels of serum NSE and S100-β protein are increased,and are correlated to the occurrence of cognitive impairment in patient with mTBI.
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Objective:To study the effect of hysteroscope electrotomy for treating infertile women with uterine septum.Methods: 64 patients with uterine septum were divided into observation group (25cases) and control group (39cases) according to different operation method. Patients of observation group received the combination mode of hysteroscope and laparoscope while the patients of control group received hysteroscope electrotomy. And thenthe effects of the two surgical methods for pregnancy outcome of the patients of the two groups were compared. Results: In 22 patients with complete uterine septum, the postoperative pregnancy rate was 59.09％ which was significantly higher than preoperative pregnancy rate (18.18％) (x2=4.539,P<0.05). The postoperative rate of normal childbirth in term was 31.82％ which was significantly higher than preoperative outcome (0％) (x2=8.324, P<0.004). In 42 patients which incomplete uterine septum, the postoperative pregnancy rate was 73.81％ which was significantly higher than preoperative pregnancy rate (33.33％) (x2=13,832,P<0.05). The postoperative rate of normal childbirth in term was 54.76％ which was significantly higher than preoperative outcome (0％)(x2=31.672, P<0.004).Conclusion: Hysteroscope electrotomy is significant in the treatment for patient with uterine septum, and it has series of advantages of minimally invasive surgery including small wound, less blooding, fast prognosis and others. Therefore, it is worthy in the clinical promoting.
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The study used questionnaires to investigate clinical TCM master degree students who enrolled in the year of 2011 and 2012 about the implementation effect of training plan before and after standardization of resident training. The results showed that a lot of students in the year 2011 and 2012 were satisfied with their training plan and training mode. However, the ability of clinical skills and academic research improved much higher after standardization of resident training among the students in 2012. The study showed that our education training plan met the training goal and reflected achievements in the cultivation of medical master degree of TCM. The training plan and training mode were higher satisfied for the students in the year 2011 and 2012. The conception of tutor, training target, the relationship between clinical skills and scientific research should be improved in future.
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Medical education of PhD candidates is of great importance to medical personnel training in our country. With the development of society, the progress of science and technology and renewal of knowledge, cultivation of innovative talents and improvement of graduate education quality is priority nowadays. This paper reflects on the progress we’ve made on medical education of PhD candidates. Though efforts have been made to improve the innovative ability of talents in our country gradually, we still need to be more innovative, more consistent and more scientific in the future. According to the state Degree Requirements and our goal of talent training, we should combine courses with scientific research systematically, pay more attention to scientific methodology and academic training, finally form a better training mode of PhD candidates majoring in medical science.