1.Molecular Control of Implantation Window of Blastocyst
Hengyu FAN ; Yuyan BAI ; Zengming YANG
Progress in Biochemistry and Biophysics 2001;28(1):11-16
Implantation window is the transient period when the embryos develop into blastocysts and the uterus differentiates into the receptive state synchronically. Estrogen and progesterone are the comprehensive regulating molecules during this process. They influence the proliferation and differentiation of multiple cell types in the uterus through the modulation of various local-signaling molecules.Uterus and blastocyst interact by the paracrine effects of prostaglandin, histamine, calcitonin, cytokines and growth factors at implantation window. This molecular cross-talk modulates the interaction between trophectoderm and uterine luminal epithelium. Once the implantation window is open, it then switches into unreceptive state spontaneously.
2.Influence of Yin-nourishing Qi-tonifying and blood-activating recipe(养阴益气活血方) on anticoagulation and fabrinolysis of cultured human umbilical vein endothelial cells
Jiehong YANG ; Yuyan ZHANG ; Huafeng WANG
Chinese Journal of Integrated Traditional and Western Medicine in Intensive and Critical Care 2006;0(01):-
Objective To study the influence of Yin-nourishing Qi-tonifying and blood-activating recipe(养阴益气活血方) on anticoagulation and fabrinolysis of cultured human umbilical vein endothelial cells(HUVEC).Methods Yin-nourishing Qi-tonifying blood-activating recipe was composed of three equal proportions of Radix Rehmanniae(生地黄),Radix Astragali(黄芪) and Rhizoma Chuanxiong(川芎);blood-activating recipe(活血方)contains Rhizoma Chuanxiong only.Serology pharmacology method was used to observe the effects of Yin-nourishing Qi-tonifying and blood-activating recipe on anticoagulation and fabrinolysis of cultured endotheliocytes of human umbilical vein.Results Compared with control group,both Yin-nourishing Qi-tonifying blood-activating and blood-activating recipes could obviously increase the content of 6-keto-prostacyclin 1?(6-keto-PGF1?) in HUVEC((412.5?42.7)ng/L and(231.7?30.1)ng/L vs.(137.6?13.5)ng/L),promote the activity of tissue plasminogen activator(t-PA)((0.920?0.072)kU/L and(0.679?0.062)kU/L vs.(0.516?0.052)kU/L),and inhibit the activity of tissue plasminogen activator inhibitor(PAI)((0.622?0.071)kAU/L and(0.851?0.085)kAU/L vs.(0.934?0.076)kAU/L),decrease the content of endothelin(ET)((35.7?4.9)ng/L and(46.8?5.1)ng/L vs.(58.6?6.2)ng/L),and increase the content of nitrogen monoxide(NO)((21.68?2.26)mmol/L and(15.15?1.73)mmol/L vs.(8.67?1.24)mmol/L) of cultured HUVEC(P
3.Study on Preparation Process of Syrigopicroside Dropping Pills
Hailing YANG ; Yuyan GUO ; Jian WANG
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(10):-
Objective To establish the optimum preparation process for Syrigopicroside Dropping Pills.Methods The preparation conditions,such as the proportion between the extracts and matrix,dripping temperature,the ratio of matrix,were studied with orthogonal test.The obtained results were tested by three indexes,such as the variation coefficient of weight of pill,time limit of dissolution and appearance of the dropping pills with analysis of variance.The preparation process was optimized.Results The optimal technical conditions were as follows:the ratio of PEG4000 and PEG6000 as matrix was 4∶1,the ratio of syrigopicroside to matrix was 1∶4,and the dripping temperature was 80 ℃.Conclusion The preparation technology can meet the requirement for dripping pill specified in China Pharmacopeia(2005 Edition).
4.Health Outcomes Equity among the People Insured in New Rural Cooperative Medical System in Shaanxi
Yuyan QIAN ; Jianmin GAO ; Jue YAN ; Xiaowei YANG
Chinese Medical Ethics 2015;(3):454-458
Objective:To study the health equity and explore the influencing factors of health inequities among those insured in New Rural Cooperative Medical System and to provide theoretical and factual basis for improvement of medical insurance system through .Method:Using concentration index decomposition to explore the sources of inequity in health outcomes and the degree of horizontal inequity in health outcomes .Results:Economical level leads that the concentration indexes of two week prevalence favor the poor , i.e.the worse the health outcome of the rich is.Economical level leads that the concentration indexes of chronic disease prevalence and self -reported health defective rate favor the rich , i.e.the worse the health outcome of the poor is .Conclusion:Economic level is the primary factors affecting two weeks prevalence , age, culture level, the employment situation is the factors al-leviate health outcomes unfair .Increase people′s economic level and cultural level , improve the situation of em-ployment is important to the health equity .
5.Protective effect of nerve growth factor (NGF) from the Chinese cobra venom on spinal neurons after sciatic nerve lesion
Minjian CHEN ; Bin YANG ; Chunyan ZHANG ; Yuyan SHU
Chinese Journal of Clinical Pharmacology and Therapeutics 2001;6(1):5-7
AimTo investigate the protective effect of nerve growth factor (NGF) from the Chinese cobra venom on spinal neurons after sciatic nerve lesion. Methods Fourty Wistar rats were divided into 2 groups each containing 20 animals. After surgical crush lesion on the bilateral sciatic nerve, the rats were injected NGF into the target muscle every day. On the d 5 and d 10 after operation, enzyme histochemistry technique was used to show acetycholinesterase(AchE) activity of the motoneurons in L5~S2 spinal cord anterior hornandfluorideresistantacidphophatase (FRAP) activity of substantia gelatinosa in L5~ S2 spinal cord posterior horn. The activity of enzyme was analysed with computer image analysis system. Results Compared with the control group, the activity of FRAP in NGF group was higher on the d 5 and d 10 after operation and the activity of AchE in NGF group was higher on the d 10 after operation. ConclusionIt is demonstrated that NGF could protect the mononeurons in spinal cord anterior horn and the sensory neurons in dorsal root ganglia after axotomy.
6.The application of flipped classroom based on WeChat and TBL in the teaching of nutrition and food hygiene
Na TAO ; Yuyan CEN ; Yu YANG ; Jun LIU
Chinese Journal of Medical Education Research 2017;16(6):564-567
There were some shortcomings for traditional teaching mode of nutrition and food hygiene course, such as many teaching contents and little teaching time, students much passively learning and little active learning. We explored the combination of the WeChat and the TBL teaching to conduct the flipped classroom to solve the deficiency. The teaching pattern was conducted in 60 students majoring in preventive medicine from Grade 2012. The learning task of nutrition and food hygiene was released on the WeChat before the class. Students learned knowledge in the form of discussion based on case in the class. After the class, the discussion, answer the question and test were conducted on the WeChat. The survey showed that 85% of the students were satisfied with teaching pattern,especially satisfied with its role of broadening students' knowledge and vision, improving their autonomous learning ability, teamwork ability, and their ability to analyze and solve problems.
7.Intervention effects of curcumin on hepatic oxidative stress injury in water arsenic-exposed rats
Changzhe LI ; Jun LI ; Aihua ZHANG ; Chun YU ; Yuyan XU ; Xin XIONG ; Yanni YANG
Chinese Journal of Endemiology 2015;34(6):406-410
Objective To observe the effects of curcumin on hepatic oxidant stress in water arsenic-exposed rats and to study its mechanism,which can offer references for curcumin used in antioxidant therapy of arsenic poisoning.Methods Thirty-two SD rats were divided into 4 groups according to body weight by random number table,half male and half female.Including control group (lavaged 135 days with deionized water),arsenic poisoning group (lavaged 45 days with deionized water after lavaging 90 days with 10 mg/kg sodium arsenite),pure curcumin group (lavaged 135 days with 1 000 mg/kg curcumin solution) and curcumin treatment group (lavaged 45 days with 1 000 mg/kg curcumin solution after lavaging 90 days with 10 mg/kg sodium arsenite),8 rats in each group.The arsenic contents of urine (urine creatinine corrected) and liver were detected by hydride generation inductively coupled plasma optical emission spectrometer (HG-ICP-OES);the activity of Cu/Zn-superoxide dismutase (SOD1) and catalase (CAT),the contents of malondialdehyde (MDA) in serum and liver homogenate by colorimetric method;the protein expression of liver antioxidant enzyme (SOD 1 and CAT) was assayed by Western blotting.Results The arsenic contents of urine and liver in arsenic poisoning group [(5.83 ± 0.29)μg/g Cr,(15.76 ± 1.65)μg/g] and the arsenic contents of urine in curcumin treatment group [(1.07 ± 0.14)μg/g Cr] were obviously higher than those of control group [(0.40 ± 0.14)μg/g Cr,(4.56 ± 1.05)μg/g,all P < 0.05];compared to arsenic poisoning group,the arsenic contents of urine and liver in curcumin treatment group [(1.07 ± 0.14)μg/g Cr,(5.42 ± 1.76)μg/g] were obviously lower (all P < 0.05).The contents of serum and liver SOD1,CAT and MDA in control group respectively were (102.46 ± 5.03),(29.33 ± 8.13)U/ml,(3.11 ± 0.49)μ mol/L and (204.05 ± 18.33),(126.26 ± 13.19)U/mg prot,(1.62 ± 0.42) μmol/g prot.Compared to the control,the activity of serum and liver SOD1 and CAT in arsenic poisoning group [(60.97 ± 7.94),(13.56 ± 5.14)U/ml and (133.66 ± 11.51),(74.01 ± 13.30)U/mg prot] were lower,the contents of MDA [(7.26 ± 0.54)μmol/L and (2.61 ± 0.52)μmol/g prot] were higher (all P < 0.05).Compared to arsenic poisoning group,the activity of serum and liver SOD1 and CAT in curcumin treatment group [(87.39 ± 9.38),(20.45 ± 6.49) U/ml and (178.27 ± 9.32),(93.70 ± 20.35)U/mg prot] were higher,the contents of MDA [(4.34 ± 0.79)μmol/L and (1.92 ± 0.18)μmol/g prot] were lower (all P < 0.05).The protein expressions of SOD1 and CAT in control group respectively were 0.64 ± 0.32 and 0.72 ± 0.31.Compared to the control group,the protein expressions of SOD1 and CAT in pure curcumin group (1.03 ± 0.23,1.02 ± 0.20) were significantly higher (all P < 0.05) and in arsenic poisoning group (0.34 ± 0.12,0.39 ± 0.11) were lower (all P < 0.05);Compared with the arsenic poisoning group,the protein expressions of SOD1 and CAT in curcumin treatment group (0.58 ± 0.09,0.68 ± 0.29) were significantly higher (all P < 0.05).The arsenic content of urine in rats were positively related with arsenic content of liver and the content of MDA [correlation coefficient (r) =0.952,0.732,all P < 0.05],but negativity related with the activity of SOD1 and CAT in liver (r =-0.874,-0.679,all P < 0.05);the activity of SOD1 and CAT and the content of MDA in serum and liver were positively related (r =0.796,0.484,0.607,all P < 0.05),the activity and protein expression of SOD1 and CAT in liver were positively related (r =0.748,0.424,all P < 0.05).Conclusion The curcumin may improve the activity of hepatic antioxidant enzyme in water arsenic-exposed rats and effectively decrease lipid poroxidation damage caused by arsenic via promoting the excretion of arsenic and the protein expression of hepatic antioxidant enzyme.
8.Psychological stress analysis and countermeasures of a university graduate student after the full implementation of the charging system
Yao LIANG ; Xia HUANG ; Yuyan YUAN ; Linan CAO ; Danqian WANG ; Fuguo YANG
Chinese Journal of Medical Education Research 2015;14(10):1067-1072
Objective To investigate the graduate students' mental pressure after the full im-plementation of the charging system and explore effective countermeasures of alleviating the psycho-logical pressure. Methods 413 full-time graduate students of Grade 2014 were randomly selected in a university of Shandong province. The graduate students' psychological pressure scale and self-designed questionnaire survey were used. The data were analyzed using SPSS 17.0 software, statistical descrip-tion of the survey data, independent sample t test, ANOVA. Results ①The psychological pressure of full-time graduate students at their own expense was in themedium pressure level; ②The economic pressure and academic pressure of the male graduate students were higher than those of the female graduate students (P=0.000,P=0.042), the rural economic pressures were greater than urban students graduate students graduate students (P=0.000); Professional graduate economic pressures were greater than academic graduate students (P=0.027);There is difference in the pressure of interpersonal commu-nication among different majors (P=0.016); ③78.75% (315/400) of the graduate students tuition fees, living expenses were mainly from their parents and the national and school awards; ④The percentage of those who completely agreed with the following view: full charge than at public expense is more advantageous to graduate education, comprehensive charge is advantageous to the education career development and comprehensive charge embodies the fairness of education was 84.75% (339/400), 71.25% (285/400) and 68.00% (272/400). Conclusion The full-time graduate students at their own expense have a more rational understanding of the charging policy; economic and academic pressures are the two outstanding pressure sources of the graduate students at the present stage. Graduate should improve their ability to cope with stress, and government and schools should take various measures to help students relieve stress.
9."Clinical study on the acupuncture of ""zhibi 3"" in the treatment of non-allergic rhinitis"
Yuyan FAN ; Xiangdong WANG ; Luquan CHEN ; Wei YANG ; Shandong ZHANG ; Lin XI ; Luo ZHANG
International Journal of Traditional Chinese Medicine 2013;(7):586-589
Objective To observe the Clinical study on the acupuncture ot zhibi 3 in the treatment of non-allergic rhinitis.Methods 20 individuals over 15 years old with non-allgergic rhinitis were prospectively recruited from rhinology clinic and ward of Beijing TongRen Hospital from December 2008 to August 2009.Acupuncture points of treat nasal 3 and the compatibility of Fengchi,Hegu were performed by once a week for 7 weeks.The changes of the total nasal symptom score (TNSS) and the Mini-Rhinoconjunctivitis Quality-of-Life Questionnaire (Mini-RQLQ) were observed at baseline and recertification every week.Results After 7 weeks treatment,we found the fourth week of score in fatigue (0.5±0.2; 2.6±1.2,respectively),embarrassed (1.0±0.3; 3.7-0.3,respectively),sleep (0.8±0.1; 4.1±0.9,respectively)、the quality of life (1.0±0.4; 3.8±0.7,respectively),congestion (0.6±0.4; 2.6± 1.0,respectively),rhinorrhea (1.2±0.5; 4.4±0.7,respectively),sneezing (1.6±0.5; 5.0±0.6,respectively),nasal itching (1.7±0.6; 4.4±0.9,respectively) were significantly improved over 75% (15/20) compared with the baseline (P<0.05).However,at the sixth week,congestion,rhinorrhea,sneezing were recurring,especially rhinorrhea,but the benefit effects of acupuncture were more than 55% comparing with baseline.Contusion Acupuncture of zhibi 3,and Fengchi,Hegu may have the effective effects on non-allergic rhinitis.
10.Practice and outcomes of lean management at outpatient clinic process optimization
Shuren CHEN ; Yuejian WANG ; Zhicai YANG ; Yuyan LIANG ; Huiming JIANG ; Mulian CHEN
Chinese Journal of Hospital Administration 2013;(6):430-432
Targeting such setbacks as difficulty to registerand difficulty to see doctors at outpatient clinic services,the hospital adopted the lean management since August 2010.For example,diversified reengineering of the outpatient service process in place,which has improved outpatient traffic at the registration section by means of innovated appointment mode and outpatients total reservation;workload balance by means of through-counters for registration and fee payment as well as the timeinterval outpatient visits to doctors; reduced human costs and outpatient back-forth movement by means of integrated service and resources integration.Lean management plays a positive role in hospital management,as proven by much shortened outpatient waiting time,much higher outpatient satisfaction,for a win-win of both patients and the hospital.