1.Study on the relationship between serum Estradiol andβ-amyloid protein in patients with cerebral infarction
International Journal of Laboratory Medicine 2015;(22):3245-3247
Objective To study the relationship between serum Estradiol(E2 ) andβ-amyloid protein(β-AP) in patients with cer-ebral infarction .Methods A total of 46 female patients with cerebral infarction were selected from 2011 January to 2014 June into observation group ,46 cases were divided as 20 cases in mild group ,16 cases in moderate group ,10 cases in severe group on the basis of neural function defect score standard ,according to the size of infarct volume 46 patients were divided into small infarct volume group with 21 patients ,moderate infarct volume group with 14 cases ,larger infarction volume group with 11 cases .In the same peri-od ,64 healthy women were recruited into control group .Serum E2 ,β-AP levels of serum and cerebrospinal fluid were detected and compared ,and the relationship of serum E2 andβ-AP level in serum ,cerebrospinal fluid were analyzed .Results Theβ-AP levels in serum and cerebrospinal fluid in observation group were higher than those of control group ,the serum E2 level was significant lower than that of the control group ,the differences were significant(P<0 .05) .With more severe cerebral infarction ,β-AP levels in serum cerebrospinal fluid showed an upward trend ,with more severe cerebral infarction ,the serum level of E2 was significantly decreased , andβ-AP ,E2 levels in mild ,moderate ,severe group had significant differences(P<0 .05) .Theβ-AP levels of serum and cerebrospi-nal fluid in higher infarct group were higher than those in small ,moderate infarction group ,but E2 levels were lower than those in small ,moderate infarction group ,the differences had significant(P<0 .05) .There were no significant difference inβ-AP of serum and cerebrospinal fluid ,Serum E2 level between small and moderate infarction group(P>0 .05) .The expression of serum E2 andβ-AP in serum and cerebrospinal fluid were negatively correlated(r= -0 .428 ,P=0 .009;r= -0 .476 ,P=0 .005) .Conclusion β-AP levels in serum and cerebrospinal fluid in patients with cerebral infarction are high ,closely related with the severity of cerebral in-farction .β-AP levels of cerebrospinal fluid ,serum in cerebral infarction patients are negatively related to the level of serum E2 .
2.Combined liver-kidney transplantation: a report of 12 cases
Jian XU ; Lixin YU ; Wenfeng DENG
Chinese Journal of Organ Transplantation 2003;0(05):-
Objective To explore the preliminary experience of combined liver-kidney transplantation.Methods Twelve patients were subjected to combined liver-kidney transplantation. The orthotopic liver transplantation was preceded with the classic fashion in 8 patients and the piggyback fashion in 4 patients. The pump-driven veuovenoas bypass technique was not used. And then the kidney transplantation was performed under stable homodynamic circumstance. The renal graft was implanted to the right iliac fossa routinely. The renal vein was anastomosed to the external iliac rein end-to-side, and the renal artery to the external iliac artery end-to-side or the hypogastric artery end-to-end. After operation, anti-CD25 monoclonal antibody or antithymocyte globulin (ATG), tacrolimus (FK506), mycophenolate mofetil and prednisone were used to prevent the allograft rejection.Results The survival rate of the 12 cases receiving combined liver-kidney transplantation was 100 %, and the graft function was restored well postoperation. An acute rejection episode of liver occurred in one patient. The FK506 toxicity occurred in one patient. The hemorrhage of digestive tract occurred in one recipient and the hemorrhage of peritoneal cavity in one patient. The pneumonia occurred in one case and the peritoneal infection in one patient. No patient experienced any episode of acute rejection of renal allograft.Conclusions The combined liver-kidney transplantation is the ideal option of patients with end-stage liver disease with chronic renal failure.
3.Clinical significance of ultrasound-guided systematic biopsy in patients with prostate cancer
Shuqing LI ; Gang WANG ; Wenfeng XU
Chinese Journal of Urology 1994;0(02):-
4 ng/ml and/or with prostate nodule found on DRE or TRUS . Methods 197 patients suspected of prostate carcinoma underwent ultrasound guided sextant biopsy and 2~4 more cores in the nodule. Four patients whose initial biopsy was negative but subsequent PSA levels were continuously abnormal underwent repeated biopsies. Results Of the 107 cases with prostate nodules,in 34(31.8%) of them prostate cancer was detected,while in 90 cases without a prostate nodule, only 11(12.2%) were positive. Stratified analysis on PSA found that the higher the PSA, the higher the positive biopsy rate of prostate carcinoma. In the 4 cases with repeated biopsies, 1 prostate cancer was detected. Conclusions For patients with prostate nodule and/or PSA over 4 ng/ml,systematic biopsy should be taken, with 2 or more cores toward the nodule.In the patients with continuous high PSA levels,if the first biopsy is negative, rebiopsy should be taken.
4.Effects of ST-1 against focal cerebral ischemia-reperfusion injury in rats
Wenfeng DU ; Lei ZHAO ; Deyi XU
Chinese Journal of Clinical Pharmacology and Therapeutics 1999;0(04):-
AIM: To demonstrate the protective effects of ST-1 against focal cerebral ischemia-reperfusion injury in rats.METHODS: The model of focal ischemia-reperfusion was induced by middle cerebral artery occlusion 2 h followed by reperfusion 22 h in rats.Neurological deficit scores were evaluated.Infarct size,malondialdehyde(MDA) content and superoxide dismutase (SOD) activity were measured,pathological changes of neurons in hippocampal CA1 region were observed.RESULTS: Compared with vehicle group ST1 at dose of 10 and 20(mg?kg~(-1)) could reduce the infarct size,MDA content,enhance SOD activity and relieve neurons injury in hippocampal CA1 region in dose-dependent way;ST-1 at dose of 20(mg?kg~(-1)) could also improve neurological function.CONCLUSION: ST-1 can protect brain tissue from focal ischemia-reperfusion injury.
5.Research on the application of the anesthesia information system in the hospital
Yi ZHU ; Zhengxiong XU ; Wenfeng LI
China Medical Equipment 2014;(1):69-70,71
The anesthetists not only pay attention to the exploitation and application of the information resource but also rely more and more on the convenience caused by the informatization. Based on HIS, LIS, and PACS, the Anesthesia information system has been constructed in order to guarantee the quality and safety of the anesthesia. The Anesthesia information system shares the information with HIS and LIS and manages the medical information such as the surgery and anesthesia closely. The paper introduces the notion of the anesthesia information system and its main function and also the predicted effect during the management of the anesthesia information system. Meanwhile, some problem about the application has been mentioned.
6.Diagnosis and treatment of blunt diaphragmatic rupture
Wenfeng ZHANG ; Qin FANG ; Yu LI ; Dongyi CHEN ; Shun XU
Chinese Journal of General Practitioners 2008;7(1):60-61
A retrospective analysis was carried out in 36 patients with blunt diaphragmatic rupture during March 1991 and March 2006. Twenty-two diagnoses were confirmed preoperatively, and the rest 14were confirmed perioperatively. Three patients underwent surgical treatment after no response to conservative therapy. Thoracotomy was performed in 21 patients, laparotomy in 9, thoracotomy plus laparotomy in 5 and combined thoraco-laparotomy in 1. Most diaphragmatic rupture may be caused by blunt collision and could lead to thoracoabdominal injury. In spite of high mortality rate, the condition is usually under diagnosed. Definite diagnosis and timely operation are important to increase survival rate and reduce mortality.
7.STUDIES ON QUANTITATIVE ANANLYSIS OF WHOLE-CELL SUGARS IN ACTINOMYCETES BY GAS CHROMATOGRAPHY-MASS SPECTRUM
Wenfeng CHEN ; Lingyue JIANG ; Lihua XU ; Chenglin JIANG
Microbiology 1992;0(06):-
Rapidly and accurately quantitative analysis of whole-cell sugars in some strains of actinomycetes by GC-MS was performed in this paper. After the polysaccharides were hydrolyzed, deoxidized and esterified , the alditol acetate derivates was analyzed by GC-MS. The derivates of rhamnose, ribose, arabinose , xylose, madurose, mannose, glucose, galactose were separated commendably under this condition. The ratio of the peak area was calculated to get the relative percentage of the various sugars.
8.Application and prospects of orthopedic robots
Zeyu SHAO ; Wenfeng XU ; Xiaoling LIAO ; Wenyue XIE
Military Medical Sciences 2016;40(12):1003-1008
Orthopedic robotics is an emerging industry in the area of healthcare , mainly used for minimally invasive treatment and accurate treatment .It can provide accurate surgical navigation and planning .Orthopedic robots can be mainly used for articular surgery , osteopathy surgery , spine surgery and traumatic orthopedics .This paper outlines the development and characteristics of orthopedic robots at home and abroad , analyzes the developments of orthopedic robots by combining medical imaging technology with clinical feedback , and predicts the future of this field .
9.Determination and cluster analysis of element contents in fourteen commonly used anti-tumor TCM
Weimin SUN ; Kun YU ; Dafang XUE ; Henggui XU ; Wenfeng TENG
China Journal of Traditional Chinese Medicine and Pharmacy 2005;0(02):-
0.70,cluster in two pairs of medicines are similar. Conclusion:It's reliable to cluster analysis the TCM by regarding the element contents as the character of these medicines. The larger the correlation coefficient is,the more similar the nature,flavor and efficacy of the medicines are,which suggested that trace element contents were closely related to(have much to do with) the flavor,nature and efficacy. The study provides method for the cluster relationship among TCM.
10.Affinity maturation of human scFv anti-TSLP in vitro
Dequn XIAN ; Siji NIAN ; Yingchun YE ; Wenfeng XU ; Qing YUAN
Chinese Journal of Immunology 2017;33(9):1301-1305
Objective:To single amino acid mutation of the full human scFvs against TSLP to enhance its affinity.Methods: The specific scFvs against TSLP was screened in our previous study and here the three-dimensional structures of TSLP and anti-TSLP scFvs were simulated by Discovery Studio system,then the molecular docking was made.The amino acids of binding epitope were randomly mutated and the mutated amino acids were selected which could remarkably improve the affinity of scFvs.The primers were designed based on the sequence of mutation amino acids and the scFv sequences were mutated by the overlapping extension PCR.The DNA of mutated scFvs was ligated with the expression vector pLZ16 and transformed into E.coli DH5αF′.Then the scFvs were expressed and the scFvs with improved affinity were selected by ELISA and BIAcore.Results: The five scFvs with single amino acid mutation were screened out by DS system,which could elevate the affinity of scFvs.The mutated anti-TSLP-scFvs were amplified by PCR,which size was about 1 000 bp.The mutated scFvs with correct sequence were expressed,and the mutated scFvs with improved affinity were detected by ELISA and BIAcore.The affinity of selected mutated scFv (M4) has been about 10 times higher than the scFv nonmutation.Conclusion: The affinity of anti-TSLP-scFv has been improved successfully.