2.Chemical constituents in stem of Lonicera japonica
Naxia ZHAO ; Yingmei HAN ; Xiaoli FU
Chinese Traditional and Herbal Drugs 1994;0(12):-
Objective To find out the bioactive constituents in the stem of Lonicera japonica and to carry out a systematic study on the chemical constituents of the plant. Methods Three compounds were isolated from the plant by means of solvent extraction and column chromatography, and their structures were elucidated by spectral analyses. Results All these compounds were identified as luteolin (Ⅰ), loga-nin (Ⅱ), r-1-(4-hydroxy-3-methoxy-phenyl)-trans-2, cis-3-dihydroxymethyl-7, 8-dihydroxy-6-methoxy-1, 2, 3, 4-tetrahydro-naphthalene (Ⅲ), respectively. Conclusion Compound Ⅲ is a new compound named as japenol.
3.Effects of Astragaloside Ⅳ Derivative on Heart Failure in Rats
Weiting WANG ; Zhuanyou ZHAO ; Yingmei HAN ; Weiren XU ; Lida TANG
Chinese Herbal Medicines 2010;2(1):48-53
Objective Astrgaloside Ⅳ derivative (ASId) is one of Astragaloside Ⅳ (ASI) derivatives with higher water-solubility and may have more druggability than ASI. The present study aims at observing the effects of ASId on cardiovascular parameters in chronic heart failure in rats. Methods Using echocardiographic and haemodynamic measurements, the effects of ASId on congestive heart failure (CHF) induced by ligation of the left coronary artery in rats were investigated.ventricle (LV) pressure (dp/dt) in ASId treated groups were significantly increased. Both LV volumes in diastole and in systole were decreased significantly after ASId treatment, accompanied with a trend towards normalization of relative stress. ASId treatment also inhibited compensatory hypertrophy of depressed heart. Conclusion ASId could improve cardiac functions and inhibite compensatory hypertrophy and LV remodelling, which suggests the possibility of ASId as a new therapeutic drug for the treatment of CHF.
4.Telemedicine for the prevention, diagnosis, and treatment of echinococcosis in Xinjiang Uygur Autonomous Region
Yong LI ; Yingmei SHAO ; Jinming ZHAO ; Arji TUERGANAILI ; Hao WEN
Chinese Journal of General Surgery 2015;30(4):294-296
Objective By analyzing 2 560 echinococcosis cases through telemedicine,to explore a new mode for preventing,diagnosing,and treating of echinococcosis.Method From January 2009 to December 2013 in our hospital through remote medical care and consulting we analyzed cases and conducted statistics on consultation's person time,location difference,spectrum of disease and upward referral rate as well as the cost of hospitalization.Result (1) The amount of consultation rose from 182 cases in 2009 to 873 cases in 2013.(2) The proportion of consultation from northern Xinjiang is about 83%-91%,obviously higher than that from south Xinjiang and eastern Xinjiang,which fits those areas mainly with the economical character of the husbandry.(3) Most consultation cases are echinococcosis (99.42%) followed by echinococcosis (0.24%),pelvic cystic echinococcosis (0.19%),cerebral echinococcosis (0.12%),and cardiac echinococcosis (0.03%).(4) Upward referral rate is nearly 7.97% and about 92.03% patients were treated in local community hospitals saving medical care budget by RMB 14.78 million.Conclusions Use and establishment of the three level network system for preventing,diagnosing,and treating the echinococcosis by telemedicine effectively enhances primary hospital's ability in the care of these patients and alleviates patients economical burden.
5.Comparison of three types of intrauterine device inserted immediately after artificial abortion: a multicentral randomized controlled trial
Yingmei ZHAO ; Haiyan DAI ; Binlie YANG ; Jihong LU ; Manli ZHU
Chinese Journal of General Practitioners 2015;14(2):111-116
Objective To compare the safety and effectiveness of three types of intrauterine device (IUD) inserted immediately after artificial abortion.Methods A randomized controlled clinical trial was performed in 4 family planning service stations in Pudong New Area from January to December 2012.Total 1 200 eligible women were randomly assigned to receive three types of IUD:MYCu,TCu380A or G-Cu200 (n =400 in each group) immediately after vacuum aspiration.All subjects were followed up for 12 months.The cumulative rates of termination of three IUD after 12 months were analyzed with WHO LTA 2.0 life table.Results Total 1 199 subjects were followed up for 12 months with a drop-out rate of 0.08% (1/1 200).No any uterine perforation was found.During the 12 months the pregnancy rates with IUD in situ in MYCu,TCu380A and G-Cu200 groups were 0.26/100 women year,0 and 0.52/100 women year,respectively (x2 =1.951,P ≥ 0.2).The rates of expulsion in three groups were 0.26/100 women year,1.84/100 women year and 2.05/100 women year,respectively(x2 =5.539,P =0.066).The remove rates related to bleeding and paining in three groups were 1.26/100 women year,7.29/100 women year and 2.76/100 women year,respectively (x2 =21.625,P =0.001).The discontinuation rates related to IUD use in there groups were 3.25/100 women year,9.00/100 women year and 5.50/100 women year,respectively(x2 =12.191,P =0.004).The rates of Abnormal position in three groups were 1.51/100 women year,0 and 0.26/100 women year,respectively (x2 =8.649,P =0.014).Conclusion Three IUDs inserted immediately after vacuum aspiration are all effective.Among three IUDs,MYCu shows lower expulsion rate,lower discontinuation rate related to IUD use and higher continuous rate; but the abnormal position rate of MYCu is higher than other two types IUD.
6.A rapid method for the determination of dopamine in porcine muscle by pre-column derivatization and HPLC with fluorescence detection
Hongxia ZHAO ; Hui MU ; Yanhong BAI ; Hu YU ; Yingmei HU
Journal of Pharmaceutical Analysis 2011;01(3):208-212
A rapid method has been developed based on the sample preparation procedure named as QuEChERS (Quick,Easy,Cheap,Effective,Rugged and Safe),combined with reversed-phase high performance liquid chromatography with fluorescence detector and C18 column after precolumn derivatization using o-phthalaldehyde and 2-mercaptoethanol to determine dopamine in porcine muscle.Methanol and deionized water (0.1% acetic acid,v/v) with a ratio of 60∶40 was used as mobile phase.The flow rate was 0.8 mL/min and dopamine was eluted within 15 min.The linearity range was 0.003-8 μg/mL with r=0.9992.The detection limit for dopamine was 4 μg/kg and the quantification limit was 9 μg/kg.Recovery studies were carried out at 0.1,0.5 and 1.0 mg/kg fortification levels and the average recoveries obtained ranged from 90.4% to 98.2% with relative standard deviations between 3.5% and 8.1%.The method was found to be suitable for detection of dopamine in animal product tissues at the maximum residue level.
7.A rapid method for the determination of dopamine in porcine muscle by pre-column derivatization and HPLC with fluorescence detection
Hongxia ZHAO ; Hui MU ; Yanhong BAI ; Hu YU ; Yingmei HU
Journal of Pharmaceutical Analysis 2011;01(3):208-212
A rapid method has been developed based on the sample preparation procedure named as QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe), combined with reversed-phase high performance liquid chromatography with fluorescence detector and C18 column after precolumn derivatization using o-phthalaldehyde and 2-mercaptoethanol to determine dopamine in porcine muscle. Methanol and deionized water (0.1% acetic acid, v/v) with a ratio of 60:40 was used as mobile phase. The flow rate was 0.8 mL/min and dopamine was eluted within 15 min. The linearity range was 0.003-8 μg/mL with r=0.9992. The detection limit for dopamine was 4 μg/kg and the quantification limit was 9 μg/kg. Recovery studies were carried out at 0.1, 0.5 and 1.0 mg/kg fortification levels and the average recoveries obtained ranged from 90.4% to 98.2% with relative standard deviations between 3.5% and 8.1%. The method was found to be suitable for detection of dopamine in animal product tissues at the maximum residue level.
8.A Comparative Study on Auditory Processing Abilities between Children with and without Learning Difficulties
Qiaoyun LIU ; Wenyuan ZHOU ; Ziqin ZHANG ; Hang ZHAO ; Xiaoqin HE ; Kun HAN ; Yingmei MAO
Journal of Audiology and Speech Pathology 2017;25(1):14-18
Objective To study the auditory processing abilities of children with learning difficulty and deter-mine the proportion of the children with auditory processing disorder.Methods A single factor completely random-ized experimental design was used.Seventeen children with learning difficulties and 31 normal children from grade 2 to grade 4 in Beijing were induded in this study.The abilities of low-pass filtered speech,competing sentences,di-chotic digits and frequency patterns were tested through auditory processing disorder screening test software.Results There were significant differences in the abilities of listening sentences and digits in competitive environment and recognizing frequency patterns between children with learning difficulty and without.The auditory processing ability of children with learning difficulties was obviously poorer than normal children.The incidence of auditory processing disorder among the children with learning difficulties was 41.176%~58.824%.Conclusion The auditory process-ing ability in the competitive environment of children with learning difficulties was obviously poorer and they need in-tervention specifically.
9.Liver transplantation for the treatment of end-stage hepatic alveolar echinococcosis
Xuewen JI ; Jinhui ZHANG ; Jinming ZHAO ; Qinwen TAI ; Yingmei SHAO ; Li LI ; Tao LI ; Hao WEN
Chinese Journal of Digestive Surgery 2011;10(4):299-301
Objectiye To investigate the value of liver transplantation for the treatment of end-stage hepatic alveolar echinococcosis(HAE).Methods The clinical data of 8 patients with end-stage HAE who received liver transplantation at the First Affiliated Hospital of Xinjiang Medical University from December 2000 to August 2010 were retrospectively analyzed.The operation time,anhepatic phase,infusion of suspension of red blood cells and postoperative complications were observed.Results The median operation time,anhepatic phase and infusion of suspension of red blood cells were 635 minutes(range,490-760 minutes),66 minutes(range,44-240 minutes)and 20 U(range,4-40 U).Liver transplantation was successfully carried out on 7 patients except for 1 patient who received emergent liver transplantation died of severe hepatic encephalopathy,renal failure and coagulation disorder on postoperative day 1.The median follow-up time was 6 months(range,3-29 months).One patient died of septicopyemia in postoperative month 3,1 died of incurable infection of bile duct in postoperative month 5,and 1 died of acute rejection in postoperative month 6.One patient was complicated with stricture of the bile duct anastomosis,and was cured by choledochojejunostomy.The size of the metastatic lesion in the left lung of 1 patient was reduced.One patient who underwent liver autotransplantation had no signs of residual liver disease with good liver function.Conclusion End-stage HAE is an indication for liver transplantation.A minimum dose of immunosuppressive agent and systemic administration of anti-HAE drugs are necessary to prevent the recurrence of HAE and ensure a long-term survival.Liver autotransplantation is the optimal method for the treatment of end-stage HAE,because no immunosuppressive agent is needed after operation.
10.The expression and purificiation of human Annexin Ⅴ overexpressed in E. coli and the detection of apoptosis
Chunhui DI ; Qun SHI ; Yingmei ZHANG ; Cheng ZHAO ; Yingcheng ZHONG ; Dawu HUANG ; Dalong MA
Journal of Peking University(Health Sciences) 2001;33(2):167-169
Objective: in order to provide rapid and reliable method. Methods: Encoded Annexin Ⅴ cDNA was amplifyed from U937 cDNA libary by PCR and then subcloned into E coli expression vector. MS2-Annexin Ⅴ fusion protein could be overexpressed in E coli. The MS2 bacteria protein could be removed by thrombin digestion.The mature Annexin Ⅴ was obtained by ion exchange chromatography and the FITC labled Annexin Ⅴ could be used in the detection of apoptosis. Results:Up to 37% of the total bacterial proteins was rhAnnexin Ⅴ as showed by SDS-PAGE. The purification of Annexin Ⅴ is over 99%. The FITC labled Annexin Ⅴ could efficiently detect apoptosis. Conclusion: We successfully established the technique procedure of obtaining a large quantity of Annexin Ⅴ and provided the basic routine for popularizing the detection of apoptosis' with high effciency.