1.Searching Literature of Microbiology by BIOSIS Previews
Mei LI ; Xian-Bo WU ;
Microbiology 1992;0(02):-
BIOSIS previews is the well-known comprehensive index to life sciences and biomedical research. It is necessary for the researchers to know the index and use it to search the literature of microbiology . This article is the overview of BIOSIS previews including it's organization structure, features and using guide.
3.Application of hysteroscopy in assisted reproduction
Chinese Journal of Minimally Invasive Surgery 2001;0(06):-
Objective To explore the application of hysteroscopy in assisted reproduction. Methods A retrospective analysis was made on results of routine hysteroscopy in 150 cases of infertile women scheduled for assisted reproduction.Results Among the 150 cases,abnormal hysteroscopic findings were identified in 47 cases(31%),including endometrial polyps in 18 cases(12%),endometrial hyperplasia in 17 cases(11%),uterine deformity in 7 cases(5%),uterine adhesion and stenosis in 3 cases(2%),endometrial tuberculosis in 1 case(0.7%),and submucous myoma or adenomyoma in 1 case(0.7%).To think of hysteroscopic findings as the standard,the sensitivity,specificity,positive predicted rate,negative predicted rate,and accuracy were 66%(31/47),98%(101/103),94%(31/33),86%(101/117),and 88%(132/150) for transvaginal ultrasonography,respectively,and were 26%(12/47),100%(95/95),100%(12/12),73%(95/130),and 75%(107/142) for uterophotography,respectively.Conclusions Hysteroscopy is a simple and reliable way to explore the uterine cavity.It may be selected as a routine examination before assisted reproduction.
4.A sduty on transplantation of embryonic spinal cord and favorable factors for its acceptance after acute spinal cord injury in rats
Bingcang LI ; Yamin WU ; Mei LIU
Journal of Third Military Medical University 1983;0(04):-
Transplantation of embryonic spinal cord was performed with microsurgical technique in rats after they were inflicted with acute spinal cord injury.Then the favorable factors affecting the acceptance of the transplanted cord were investigated with morphological technique.It was found that among the gestation ages from EH to E20,the spinal cord taken from the rats with the gestation age of E14 showed the highest survival rate of 70.83%.None of the transplants taken from the rats with the gestation age older than E14 survived.The connective tissue attached to transplants severely interfered with their acceptance and growth.The severity of the pathological manifestations of the injured spinal cord exerted unfavorable influence on the survival and growth of the transplants too.It is believed that in order to assure the success of the transplantation,besides the attention on the technical performance of the surgery,it is essential to determine the differentiation state of the embryonic spinal cord to be transplanted.
5.Cloning and analyzing of interleukin-4 cDNA from the lymphocyte of Tibet pig
Chinese Journal of Immunology 2001;0(07):-
Objective:To clone interleukin 4 cDNA of Tibet pig.Methods:To amplify cDNA,using RT PCR from the total RNA from the lymphocyte stimulated by 10 ?g/ml Con A in vitro,to subclone into pMD T vector,and then to determine it by digesting and sequencing.Results:The cloned Tibet pig interleukin 4 was 98% homologus to the necleotide acids of Chenghua pig a special specie of pig in Sichuan province and 99% homologus to that of hybrid of Landrance with Chanbai pig.Conclusion:IL 4 of Tibet pig was successfully cloned from the lymphocyte after stimulating 70 h with ConA.
6.Cigarette Smoke-Induced DNA Damage and Repair in Two Kinds of Human Lung Interstitial Cells
Na LI ; Zunzhen ZHANG ; Mei WU
Journal of Environment and Health 1992;0(02):-
Objective To study the DNA damage and repair of normal lung interstitial cells and human lung adenocarcinoma cells exposed to cigarette smoke. Methods Cultured human embryo lung fibroblasts (HLF) and human lung adenocarcinoma A549 cells. Mainstream smoke was collected by using dimerhyl sulfoxide (DMSO) and phosphate buffer solution (PBS) as absorbents. MTT assay was used to test the cytotoxicity of the solutions of cigarette smoke, then selected the concentrations of the solutions with no obvious cytotoxicity to treat cells and detected DNA damage and repair by comet assay. Results As treated with original solutions or 1/2 dilution of DMSO cigarette smoke solutions only, the Viability of cells was below 80%, but it was beyond 80% when treated with PBS solutions. The results showed that a significant difference of DNA damage was seen between the treated groups and negative control groups (P0.05),but the DNA damage caused by DMSO solutions was worse than PBS solutions significantly (P
7.Effect of folic acid combined with Qizhi Weitong granule on serum gastrin, sIL-2 R and immune function in chronic atrophic gastritis patients of Hp positive
Chunyu KONG ; Mei WU ; Zhaoyong LI
Chinese Journal of Biochemical Pharmaceutics 2015;37(7):101-103
Objective To investigate folic acid combined with Qizhi Weitong granule on serum gastrin, sIL-2R and immune function in chronic atrophy gastritis patients of Hp positive.Methods 46 cases with Hp positive chronic atrophy gastritis were selected and randomly divided into two groups according to different treatment, 23 cases in each group.The control group were given folic acid tablet on the basis of conventional treatment, and the experimental group were treated on the basis of control group combined with Qizhi Weitong granule.The patients in two groups were all treated for three months.Serum gastrin, sIL-2R and T cell subsets levels were detected after treatment.ResuIts Compared with control group after treatment, the serum gastrin level of experimental group was higher (P<0.05), sIL-2R level was lower (P<0.05), CD4 +T, CD4 +T/CD8 +T were higher (P<0.05), and CD8 +T level was lower ( P<0.05 ) .ConcIusion Folic acid combined with Qizhi Weitong granule could significantly increase serum gastrin and CD4 +T level and reduce sIL-2R and CD8 +T level in chronic atrophy gastritis patients of Hp positive, as a guidance for clinical.
8.A study on the change of matrix metalloproteinase-2 and peripheral white blood cells of acute cerebral in-farction patients at different altitudes
Li MEI ; Shizheng WU ; Shukun ZHANG
Chinese Journal of Nervous and Mental Diseases 2014;(7):414-418,428
Objective To investigate the changes of the serum levels of matrix metalloproteinase- 2 (MMP-2) and peripheral blood leukocytes content and its relationship with the severity of cerebral infarction in acute cerebral in-farction(ACI)patients at different altitudes (high, middle and low). Methods One hundred thirty-nine cases and 150 healthy controls were included in the present study. Enzyme linked immunosorbent method was used to detect MMP-2 and WBC levels. Results MMP-2 levels increased as the altitude increased in controls. The MMP-2 in a descending or-der was 1.41±0.39 in Haixi (high altitude), 1.37±0.27 in Xining (middle altitude) and 1.28±0.21 in Sichuan (low altitude) (P<0.05). The serum levels of MMP-2 were significantly increased at 7 d at different altitudes (5.75±1.19, 5.23±1.12 and 4.15 ± 0.97 in low, middle and high altitudes, respectively). The WBC were significantly increased at different alti-tudes (12.93±2.11, 12.11±1.74 and 11.15±1.68 in low, middle and high altitudes, respectively) within 48 h in severe ACI group (P<0.05). MMP-2 levels in different altitudes were positively associated with the infarction size and the degree of neurological deficit, while were negatively correlated with the prognosis. The WBC in large infarction group were positive-ly correlated with the infarct size. Conclusions The levels of MMP-2 and WBC in different altitudes may be helpful in determining the ACI lesion size and the severity of the illness as well as estimating the prognosis.
9.Evaluation on ischemia-modified albumin, D-dimer and cTn Ⅰ in the early diagnosis of acute coronary syndrome
Xiangyun WU ; Guixia LI ; Baoen SHAN ; Mei LI
Chinese Journal of Laboratory Medicine 2012;35(5):443-447
ObjectiveTo investigate the early diagnosis value of IMA and D-dimer and cTn Ⅰ in ACS.MethodsAll the 113 blood samples of patients with chest pain in the emergency department of the Third Hospital of Hebei Medical University were selected.Thirty healthy people were selected as the control group.Patients were divided into two groups:one of 52 cases was within 3 hours after onset of chest pain.the other of 61 cases was between 3 to 6 hours.According to the final clinical diagnosis,31 cases were divided into non-ischemic chest pain group (NICP) and 82 cases were divided into the ACS group.The ACS group was divided into the UA group (51 cases),NSTEMI group (18 cases) and STEMI group (13 cases).IMA was measured with albumin-cobalt binding test,and D-dimer was measured with the automated blood coagulation analyzer,and cTn Ⅰ was measured with the automatic biochemical analyzer.Levels of IMA,D-dimer,cTn Ⅰ were compared in the different groups and their sensitivity,specificity and accuracy to the early diagnosis of ACS were evaluated by Four format diagnositic test.ResultsThe levels of IMA in ACS group,which include the UA group,NSTEMI group and STEMI group were (0.722 ± 0.181 ),(0.601 ± 0.122),(0.631 ± 0.153 ) ABSU respectively.The levels of D-dimer were ( 0.485 ± 0.124 ),( 0.571 ± 0.181 ),(0.748 ± 0.094 ) mg/L respectively.The levels of cTn Ⅰ were ( 0.076 ± 0.027 ),( 0.059 ± 0.038 ),(0.065 ± 0.015 )μg/L respectively.Concentrations of IMA,D-dimer and cTn Ⅰ in ACS group were significantly higher than those of the NICP group [IMA (0.338 ± 0.065 ) ABSU,D-dimer (0.368 ± 0.078 )mg/L,cTn Ⅰ (0.022 ±0.007) μg/L] and the controls group [IMA (0.292 ±0.058) ABSU,D-dimer (0.267 ±0.052) mg/L,cTn Ⅰ (0.029 ± 0.016) μg/L].There were significant differences between the ACS group and the NICP group and the control group,F value was 3.613,3.289 and 3.521 respectivily,and P <0.05.The levels of IMA in ACS group within 3 hours and between 3 to 6 hours,which is (0.665 ±0.104 ),(0.520 ± 0.073 ) ABSU,were significantly higher than that of the controls (0.292 ± 0.058 ) ABSU ( F value was 3.58,P < 0.05 ).The levels of D-dimer and the cTn Ⅰ in the group between 3 to 6 hours [which were (0.634 ±0.213 ) mg/L and (0.079 ±0.032) μg/L] were significantly higher than those of the controls [(0.267 ±0.052) mg/L and (0.029 ±0.016) μg/L] (q was4.24 and 3.46,P <0.05).The sensitivity,specificity and accuracy was 83.36%,70.97% and 81.42% of the IMA in a separate diagnosis of ACS,but the sensitivity,specificity and accuracy were 97.56%,58.06% and 86.73% of the IMA,D-dimer and cTn Ⅰ with the affiliation diagnosis.ConclusionThe serum IMA is a more sensitive indicator of ACS in early myocardial ischemia than cTn Ⅰ and plasma D-dimer.Serum IMA in combination with D-dimer and cTn Ⅰ could improve the sensitivity and specitivity,and had value to guide cinical diagnosis of ACS in the early stage.
10.Application of MRI diffusion tensor imaging on diagnosis of traumatic brain injury
Bocheng WANG ; Mei LI ; Lizhong WU ; Xiaolong DING ; Xueyuan LI
Journal of Shanghai Jiaotong University(Medical Science) 2009;29(12):1491-1494
Objective To evaluate the value of MRI diffusion tensor imaging (DTI) on diagnosis of traumatic brain injury(TBI). Methods Twenty two patients with TBI 1 to 7 days post-injury and 14 healthy controls were studied with DTI and conventional MRI. The fractional anisotropy (FA) was quantified from different regions of interest (ROI) including the genu of corpus callosum (CC), the splenium of CC, the genu of internal capsule (IC) and the posterior limb of IC bilaterally. The FA value of the same ROI was compared between TBI group and control group, and FA value of the lesion side was compared with the mirror healthy side in TBI group. Correlations between the FA and Glasgow coma scale (GCS) in TBI patients were analyzed with Pearson linear correlation. Results Compared with control group, the FA value decreased significantly in each ROI (P<0.01). Compared with the healthy side, FA value was also significantly lower in lesion side in TBI group (P<0.01). The FA value in all the sites were not correlated with GCS in TBI group (P>0.01).Conclusion DTI is sensitive for detecting the acute traumatic injury of white matter and evaluate the degree of injury. It offers the possibility to diagnose TBI earlier and accurately.