1.Establishment of RP-HPLC detection method of N-isopropyl oxamate in the serum of plateau pikas.
Yang WANG ; Lian WEI ; Lin-na WEI ; Xiao LI ; Li-na XU ; Deng-bang WEI
Chinese Journal of Applied Physiology 2015;31(5):469-476
OBJECTIVETo explore the intergrating of N-isopropyl oxamate and serum protein and establish a high performance liquid chromatography (HPLC) detection method of N-isopropyl oxamate (specific inhibitor of testis-specific lactate dehydrogenase (LDH-C4)) in the blood of plateau pikas.
METHODSTwenty highland pika 150-200 g, were randomly divided into two groups (n = 10): control group and inhibitor group. Different concentrations of N-isopropyl oxamate were added to examine the intergrating of N-isopropyl oxamate and serum protein. In order to determine its concentration in the pika blood accurately, we used the method of adding trypsin to incubate the serum first, followed by trichloroacetic acid treatment and detecting by HPLC. Results: When the concentrations of N-isopropyl oxamate in the pika serum were added to 0.05 mmol/L, 0.1 mmol/L, 1 mmol/L, 10 mmol/L, 16.7 mmol/L, 33.3 mmol/L and 100 mmol/L, the intergrating rates between N-isopropyl oxamate and plateau pika serum were 100%, 100%, 100%, 86.84%, 54.11%, 40.10% and 20.18%, respectively. The method established in this paper was good on recovery rates, precision and stability. A good linearity was obtained in the range of 0.0125-0.25 mmol/L. When the concentrations of N-isopropyl oxamate in the serum were added to 0. 15 mmol/L,0.3 mmol/L and 1 mmol/L, the recovery rates were 98.05%, 98.98% and 98.12%, respectively; the precision relative standard deviation( RSD) of concentrations were 1.17%, 0.92% and 0.83%, respectively; the stability relative standard deviation (RSD) of concentrations were 1.38%, 1.40% and 0.88%, respectively. The repeatability RSD of the method was 1.76%. Quantitative limit was 0.0125 mmol/L.
CONCLUSIONN-isopropyl oxamate has a strong affinity with plateau pika serum protein that can't be accurately determined with common HIPLC method. It can be accurately determined in the blood by adding trypsinto digest the serum protein first, followed by adding trichloroacetic acid to precipitate the protein.
Animals ; Chromatography, High Pressure Liquid ; methods ; Lagomorpha ; Male ; Oxamic Acid ; analogs & derivatives ; blood
2.Effects of Different Preparation Methods on Clinical Efficacy of Wei-Chang Fu-Yuan Decoction
Hongwei ZHANG ; Baohai XU ; Xu PAN ; Na WEI ; Jing LI
World Science and Technology-Modernization of Traditional Chinese Medicine 2013;(3):569-572
This study was aimed to compare different preparation methods of Wei-Chang Fu-Yuan (WCFY) De-coction, which is a self-made traditional Chinese medicine (TCM) decoction of our hospital, through the investiga-tion of difference in recovery time of gastrointestinal function after gynecological abdominal surgery. A total of 120 cases after gynecological abdominal surgery in our hospital between 2011 and 2012 were randomly divided into the treatment group and the control group, with 60 cases in each group. The hospital self-made WCFY Decoction was given to patients 8 hours after surgery in the treatment group and control group. Decoctions given to two groups were prepared with different methods. Decoction given to the treatment group was by the decoction ma-chine of multiple decoctions preparation. Decoction given to the control group was prepared as the traditional sin-gle dose decoction. The first anus flatus time was observed in both groups. The results showed that the flatus time of treatment group was 16 h and that of the control group was 13 h. The flatus time of patients from two groups was in skewed distribution, so the distance between the median and quartile was used to describe. The non-para-metric tests (Kolmogorov-Smirnov method) were used in the comparison of flatus time of two groups. There was statistical significance between two groups (P < 0.05). It was concluded that different preparation methods affect the clinical efficacy of WCFY Decoction. Compared with the traditional single dose decoction, the fist flatus time was postponed 3 hours by the decoction machine of multiple decoctions preparation. Therefore, with the widely using of decoction machine of multiple decoctions preparation today, the function of decoction machine should be improved and the program should be perfected in order to increase the clinical efficacy of this preparation method.
3.Efficacy and Safety of Liraglutide in the Body Mass Loss of Patients with Overweight and Obesity:A System-atic Review
Chunyan WEI ; Bin WU ; Na SU ; Ting XU
China Pharmacy 2016;27(21):2941-2944
OBJECTIVE:To systematically review the effectiveness and safety of liraglutide in the body mass loss of patients with overweight and obesity,and provide evidence-based reference for clinical treatment. METHODS:Retrieved from Medline, EMBase,CJFD,Wanfang and VIP,randomized controlled trials(RCT)about liraglutide versus placebo in the treatment of over-weight and obesity were collected. Meta-analysis was performed by using Rev Man 5.1.0 software after data extract. RESULTS:To-tally 8 RCTs were enrolled,involving 3 560 patients. Results of Meta-analysis showed weight loss degree [MD=-1.71,95%Cl (-2.25,-1.17),P<0.001] and the percentage of proportion loss more than 5% to total patients [RR=2.20,95%CI(1.83,2.63), P<0.001] in liraglutide group were significnatly more than blank control group;while the incidences of nausea,vomiting,diar-rhea,mild-to-moderate hypoglycemia and peripheral edema were significantly higher than control group. CONCLUSIONS:Liraglu-tide is effective for overweight and obesity patients. And there is mild adverse reactions but high incidence of gastrointestinal ad-verse reactions,which should be vigilant.
4.The effects of comprehensive control measures on intelligence of school-age children in coal-burning-borne endemic fluorosis areas
Na WEI ; Yi LI ; Jie DENG ; Shiqing XU ; Zhizhong GUAN
Chinese Journal of Endemiology 2014;33(3):320-322
Objective To investigate the incidence of dental fluorosis,urinary fluoride level and intelligence of children who lived in the coal-burning-borne endemic fluorosis areas and to reveal the effects of comprehensive control measures on intelligence of children in this area.Methods Children aged 8-12 who lived in coal-burning-borne endemic fluorosis areas in Bijie City of Guizhou Province were selected and divided into two groups according to the duration of comprehensive treatments given:long treatment group (Xiaba Village and Zhongtun Village,furnace stovewas changed and comprehensive control measure of health education was carried out for more than 3 years) and short treatment group(Chadi Village and Maoliping Village,stoves were improved and health education time < 1 year).The children who lived in a non-fluorosis area were selected as controls in 2012.Dental fluorosis was diagnosed by the method of Dean; urinary fluoride was analyzed by the method of fluoride-ion selective electrode; and the intelligence quotient (IQ) was measured by Raven's Standard Progressive Matrices Test.Results The number of children surveyed in control group was 104,long treatment group was 298,short treatment group was 339,and the incidence rates of dental fluorosis were 0 (0/104),725%(216/298) and 85.2% (289/339),respectively,and the incidence rates of dental fluorosis in children lived in the endemic fluorosis areas were significantly increased compared with that of control group; the difference of incidence rates between long treatment group and short treatment group was statistically significantly(x2 =15.736,P < 0.01).Urinary fluoride content were (2.33 ± 0.18) and (3.03 ± 0.16)mg/L,respectively,compared with the control group[(1.34 ± 0.64) mg/L],the values in endemic fluorosis areas were significantly higher(F =306.53,P < 0.01).Above average IQ of children in the control group was 97.1% (101/104),which was significantly higher than that of long and short treatment groups; after a lengthy treatment,mental retardation detection rate was significantly lower in the low-age group,8-10 year-old ehildren(x2 =7.542,P < 0.01).Urinary fluoride content was negatively correlated with the level of IQ (r =-0.553,P < 0.01).Conclusions The intelligence development of children in coal-burning-borne endemic fluorosis area is significantly delayed.After a certain period of comprehensive treatment,the decreased level of cognition is inhibited and the mental retardation in the low-age group is improved.
5.Key Problems of Reading Therapy Application in Clinical Nursing
Yuan TIAN ; Wei WANG ; Li MA ; Na XU
Journal of Medical Informatics 2017;38(6):84-89
Based on Delphi method,the paper investigates several key problems about the application of reading therapy in clinical nursing,including the prospect,necessity,advantages,obstacles,practice pattern,etc.The result shows that the reading therapy meets the development trend of modern medicine.The paper analyzes the advantages and obstacles of applying reading therapy in clinical nursing,and puts forward some countermeasures such as establishing the multi-cooperation system,cultivating reading therapy experts,developing pilot bases,and strengthening publicity,etc..
6.Advances in study of dioscin--a natural product.
Li-Na XU ; Yong-Li WEI ; Jin-Yong PENG
China Journal of Chinese Materia Medica 2015;40(1):36-41
Dioscin, a typical saponin, is widely present in the family of Dioscoreaceae, Liliaceae, Caryophyllaceae and Rosaceae, especially in Dioscoreaceae, including Discorea nipponica Makino, Dioscorea zingiberensis C. H. Wright and Dioscorea panthaica Prain et Burkill. Traditional Chinese medicine reported that dioscin plays a role in expectorant, relaxing the muscles and stimulating the blood circulation, aiding digestion and diuresis. With the development of science and technology in recent years, some new extraction and separation techniques and methods have been applied to the study of dioscin, and more and more pharmacological effects were found. Modern pharmacology studies have confirmed that dioscin had some activities on desensitization, anti-inflammatory, lipid-lowering, anti-tumor, hepatoprotection and anti-viral. After oral administration, dioscin is metabolized to diosgenin, which is the true active ingredient and is an important raw material to synthesize steroid hormone drugs. Therefore, the studies on dioscin are valueable and promising. In this review, we make a summary on the researches of dioscin including the extraction technology, separation and prepara- tion, chemical synthesis, drug metabolism, determination and pharmacological researches.
Animals
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Biological Products
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adverse effects
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chemistry
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pharmacology
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Diosgenin
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adverse effects
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analogs & derivatives
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chemistry
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pharmacology
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Humans
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Plant Extracts
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adverse effects
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chemistry
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pharmacology
7.Developmental dislocation of the hip in infants: the hip's ultrasound quantitative analysis
Hongwei, TAO ; Ke, SUN ; Bei, XIA ; Wei, SHI ; Weiling, CHEN ; Na, XU ; Wei, YU
Chinese Journal of Medical Ultrasound (Electronic Edition) 2017;14(3):210-219
Objective To evaluate the biological characteristics of hip joint in infants with developmental dislocation of the hip (DDH).Methods From January 2013 to June 2016,30 patients (age from 1 to 8 months,25 females and 5 males) who were diagnosed as DDH,underwent ultrasound examination in Shenzhen Children's Hospital,in these patients 20 cases were treated surgically,and 10 cases were treated with non-surgical treatment.There were 34 hips (26 unilateral dislocation and 4 bilateral dislocation) dislocation in 60 hips.All the patients were confirmed by X-ray,magnetic resonance imaging (MRI) examination or operation.All the patients were examined by ultrasound through the coronal and transverse plane of the hip joint.The α angle,femoral head coverage ratio by acetabulum (FHC),femoral head length and width,distance from pubis to femoral head (P-H) and distance from ischium to femoral head (I-H) were measured.The dislocation joints were compared with contralateral joints.Results The α angle in the hip dislocation group was smaller than the contralateral group [(50.5±3.75)° vs (64.8±3.38) °],and there was significant difference between the two groups (t=-15.181,P < 0.001).The FHC,femoral head length and width in the hip dislocation group were all smaller than the contralateral group [(23.4t17.63)% vs (64.3±6.45)%,(0.98 ±0.15) cm vs (1.19 ±0.11) cm,(1.38±0.21) cm vs (1.61 ±0.16) cm],and there were significant differences between the two groups (t=-12.469,-6.034,-4.568,all P < 0.001).The P-H and I-H in the hip dislocation group were larger than the contralateral group [(0.97±0.45) cm vs (0.27±0.05) cm,(0.75±0.30) cm vs (0.17±0.05) cm],and there were significant differences between the two groups (t=8.805,10.696,both P < 0.001).The α angle,femoral head length and width in bilateral dislocation of hip group were slightly smaller than the unilateral dislocation of hip group [(50.3±2.75)° vs (51.3±4.77)°,(0.90 ±0.15) cm vs (0.97 ±0.12) cm,(1.25±0.20) cm vs (1.37 ±0.17) cm],but there were no significant differences between the two groups.The P-H and I-H in bilateral dislocation of hip group were slightly larger than the unilateral dislocation of hip group [(0.97 ± 0.49) cm vs (0.80±0.31) cm,(0.92±0.26) cm vs (0.68±0.18) cm],but there were no significant differences between the two groups.The value of acetabular index in the ultrasound group was slightly larger than the X-ray group [(33.13 ± 7.82)° vs (31.20 ± 8.31)°],and there were no significant differences between the two groups.Conclusions The characteristics of DDH includes acetabulum and femoral head dysplasia,and femoral head and acetabulum position relationship abnormalities.Quantitative ultrasonography of the hip can be used to quantitatively evaluate the structural features of DDH,and it is helpful to the early diagnosis and follow-up of DDH.
8.Influence of thrombus aspiration combined tirofiban on patients with acute STEMI after primary PCI
Changjin DENG ; Luping JIN ; Wei CHENG ; Guozheng WEI ; Xiaodong XU ; Ling SHAO ; Na PENG
Chinese Journal of cardiovascular Rehabilitation Medicine 2015;24(1):50-54
Objective:To study the influence of thrombus aspiration combined tirofiban on patients with acute ST seg-ment elevation myocardial infarction (STEMI)after primary percutaneous coronary intervention (PCI).Methods:A total of 98 patients,who received primary PCI because of STEMI in our hospital from Jan 2012 to Mar 2013,were selected.They were divided into thrombus aspiration group (n=48,received pure thrombus aspiration)and com-bined treatment group (n = 50,received thrombus aspiration combined intracoronary tirofiban injection during PCI).Coronary angiography (CAG)instantly after PCI and follow-up condition during hospitalization and six months after discharge were compared between two groups.Results:(1)Compared with thrombus aspiration group after PCI,there were significant rise in TIMI blood flow grade [(2.3±0.6)grades vs.(2.7±0.3)grades],per-centage of TIMI flow grade 3 (72.9% vs.90.0%)and ST segment regression >50% rate within 90min after PCI (52.1% vs.74.0%),P < 0.05 or < 0.01,and significant reduction in percentage of postoperative no-reflow (18.8% vs.4.0%,P =0.038)in combined treatment group in hospital;(2)After six-month follow-up,left ven-tricular ejection fraction (LVEF)of combined treatment group was significantly higher than that of thrombus aspi-ration group [(58±6.3)% vs.(51±5.6)%,P <0.05].Conclusion:Thrombus aspiration combined tirofiban can effectively reduce coronary thrombus burden and improve cardiac function in STEMI patients during primary PCI.
9.Clinicopathologic analysis of ovarian gonadoblastoma.
Xiu-Li WU ; Lian XU ; Ying HE ; Na YU ; Wei-Wei WU ; Kai-Xuan YANG
Chinese Journal of Pathology 2009;38(6):418-419
Adolescent
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Alkaline Phosphatase
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metabolism
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Antineoplastic Combined Chemotherapy Protocols
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therapeutic use
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Bleomycin
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therapeutic use
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Cisplatin
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therapeutic use
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Diagnosis, Differential
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Dysgerminoma
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pathology
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Etoposide
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therapeutic use
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Female
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Gonadoblastoma
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drug therapy
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metabolism
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pathology
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surgery
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Humans
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Hysterectomy
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methods
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Inhibins
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metabolism
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Isoenzymes
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metabolism
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Ovarian Neoplasms
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drug therapy
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metabolism
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pathology
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surgery
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Young Adult
10.Preparation and Pegylation of TNF-? Derivative
Yan-Wei BI ; Na LUO ; Hai-Ting LONG ; Zeng-Fu YANG ; Xu YANG ; Jian-Feng LI ; Wei-Ming XU ;
China Biotechnology 2006;0(12):-
The gene of mutated TNF-?D4 gene was amplified by overlap PCR and cloned into the prokaryotic expressive vector pBV220.TNF-?D4 contains two changes:substitutions of Pro8Arg,Ser9Lys,Asp10Arg,Ile157Phe,Leu29Ser,Arg31Val and a deletion of the N terminal four amino acids.The recombinant vector pBV220-TNF-?D4 was transformated into E.coli strain DH5?,and the high expression strain was obtained by screening monoclones.The level of expression was about 45% of total cell protein.After purification,the purity of fusion protein was above 90% by HPLC and relative ability was 8 ?107.TNF-?D4 was modificated by mPEG-ButyrALD。After purification,the purity of mPEG-TNF-?D4 was above 85% and relative ability was 8.6?107.The in vivo systemic toxicity of mPEG-TNF-?D4,which is indicated by LD50,is lower than that of rhTNF-?.These results strongly supported for the further study and exploitation of TNF-antitumor drug.