1.A priliminary observation of composite Danshen droplet pills on hemorheology of patients with oral lichen planus
Huafeng HUANG ; Zhen DONG ; Hui XU
Journal of Practical Stomatology 1996;0(02):-
?Objective:To study the influence of composite Danshen droplet pills on hemorheology in peripheral blood of patients with oral lichen planus (OLP).Methods:46 patients with OLP were treated by composite Danshen droplet pills for 8 weeks (oral administration,3 times/day,10 granules/time).The venous blood was taken and the hemorheology was studied with a LBY N6A hemorheology test machine before and after the treatment.Results:Effective results were observed in 33 patient and obvious effective results in 5,while no treating effect was found in 8 after treatment.Whole blood viscosity,blood plasm viscosity,erythrocyte aggregation indexs,thrombocyte aggregation rate,fibrinogen and ESR of the OLP patients were decreased ( P 0.05).Conclusion:The composite Danshen droplet pills may improve the hemorheology of OLP patients.
2.Purification and Characterization of Lipases from Rhizopus chinensis
Zhen-Hua RUAN ; Dong WANG ; Yan XU ;
Microbiology 1992;0(06):-
Two lipase active fractions Lip1 and Lip2 were purified from the cell extract of Rhizopus chinensis CCTCCM201021.Both gave a single band on SDS-PAGE after using ammonium sulfate precipitation、Phenyl-Sepharose FF、DEAE-Sepharose FF and Sephadex G100 gel filtration chromatographies.The molecular masses of two lipases were 59.2kD and 39.4kD respectively.Lip1 and Lip2 showed optimal pH at 8.0 and 8.5 and their optimal temperatures were 40℃ and 35℃ respectively.The substrate specificity of the two lipases was obviously different.Lip1 was more specific to long chain fatty acid of p-nitrophenyl esters while Lip2 had a preference for the hydrolysis of short chain fatty acid of p-nitrophenyl esters.Lip1 had 1,3-position specificity for triacylglycerols hydrolysis while Lip2 had nonspecific position.Both lipases were stimulated by Ca 2+、Mg 2+ while SDS had strong inhibition on their activities.Lip1 and Lip2 had good stability in cyclohexane、hexane、heptane and isooctane(30% V/V).
4.Method for obtaining prior information of electrical impedance tomography
Canhua XU ; Xiuzhen DONG ; Cheng ZHEN ; Feng FU ; Wanjun SHUAI
Chinese Medical Equipment Journal 1989;0(01):-
The reverse problem of Electrical impedance tomography(EIT) is a highly ill-posed problem.It is concluded that spatial prior information could improve the final image quality.This paper proposes a new method for obtaining prior information.By this method,the inspected cross-section contour and internal structure for EIT can be achieved.
5.Fabrication of acellular nerve allograft through chemical extraction and efficacy with the use of the graft in repair of rat sciatic nerve defect
Xianli XU ; Zhuang HAN ; Haipeng XUE ; Dong GUO ; Zhen YANG
Chinese Journal of Trauma 2016;32(5):458-463
Objective To evaluate regenerative nerve and functional recovery of target muscle in rats with sciatic nerve defect bridged by acellular nerve allograft made through chemical extraction.Methods Sciatic nerve of SD rats was processed in a volume fraction of 3% Triton X-lO0 solution and 40 g/L sodium deoxycholate solution.Morphology of myelin sheath,axons and basal lamina tubes of sciatic nerve segments was observed under the light microscopy before and after the chemical processing.Twenty-five Wistar rats were divided into acellular nerve allograft group (n =10),autograft group (n =10) and normal control group(n =5) according to the random number table.A 1 cm sciatic nerve defect was created in acellular nerve allograft group and autograft group,and was respectively bridged by acellular nerve allograft and autograft.Sciatic nerve function index (SFI) was measured every two weeks.Twelve weeks after surgery,nerve conduction velocity (NCV),recovery rate of compound muscle action potential (CMAP) and recovery rate of muscle force were measured in each group.Results Cellular components including myelin sheath and axons were removed thoroughly,but the basal lamina tubes were preserved completely.At postoperative 2,4,6,8,10 and 12 weeks,SFI in normal control group (-1.7±5.9,-0.3 ±2.5,0.8 ±4.1,-1.4±3.6,-2.5 ±5.7 and-2.1±3.2) was superior over autograft group (-94.3±3.7,-90.1±4.1,-63.7±7.8,-51.9±8.2,-48.8±8.6 and -44.3 ± 10.5) and acellular nerve allograft group (-97.1 ± 5.3,-91.2 ± 6.1,-70.6 ± 5.5,-60.4±6.2,-58.2 ±10.2 and-56.4 ±8.0) (P <0.01).At postoperative 6,8,10 and 12 weeks,SFI in autograft group were better than those in acellular nerve allograft group (P <0.05).NCV [(61.6 ± 8.1) m/s],recovery rate of CMAP[(98.7 ± 5.9) %] and recovery rate of muscle force [(101.8 ± 6.6) %] in normal control group were higher than those in acellular nerve allograft group [(22.3 ± 4.7) m/s,(40.3 ± 9.2) % and (43.8 ± 9.3) %] and those in autograft group [(29.0 ±5.5) m/s,(52.5 ± 10.6) % and (54.3 ± 10.5) %] (P < 0.01).NCV,recovery rate of CMAP and recovery rate of muscle force in autograft group were better than those in acellular nerve allograft group (P < 0.05).Conclusions Acellular nerve segments are harvested satisfactorily by chemical extraction.Sciatic nerve defect in rats can be cured with the acellular nerve allograft,but the repair effect of autograft is relatively better.
6.Construction of Baker’s Yeast Strains with High Fermentative Abilities in both Lean and Sweet Doughs
Tian-Xiao JIANG ; Man XU ; Zhen WANG ; Dong-Guang XIAO ;
Microbiology 1992;0(04):-
Two parental strains BY-14 and BY-6,with high leavening ability in lean and sweet dough respectively,were selected.Through spore production and separation,two haploids with opposition types were selected for cross-breeding.At last one hybridization strain was obtained,with good fermentation ability as BY-14 in lean dough and better than BY-6 by 25%in sweet dough.
7.The disposition of keeping carotid artery continuity in treatment of carotid body tumor
Gang CAO ; Zhen YANG ; Senlin ZHANG ; Zhen DONG ; Wei CHEN ; Jinke XU ; Bingyao LIU ; Ting GUO
Journal of Medical Postgraduates 2015;(6):604-607
Objective Carotid body tumor is closely related to carotid artery .How to deal with carotid artery is the guaranty of successful surgery .The aim of this study was to summary the experience of keeping carotid artery continuity in the treatment of 15 carotid body tumor cases . Methods Clinical data of 15 cases with 17 carotid body tumors , in which 2 patients had bilateral tumors , were collected.The 17 carotid body tumors were classified as Shamblin I (6 cases),Ⅱ(6 cases) andⅢ(5 cases).Fifteen tumors were dissected simplely.Among these 15 tumors, three of Shamblin Ⅱand two of Shamblin Ⅲunderwent repair of the break of carotid artery.The rest two of Shamblin Ⅲunderwent tumor and external carotid artery excision and internal carotid artery repairment .Matas pressing test of carotid artery or carotid artery balloon occlusion test was not performed in any patient . Results All 17 tumors were successfully excised .None of the 17 tumors underwent anastomosis or reconstruction of internal carotid artery or arteria carotis com -mun.The continuity of carotid artery or internal carotid artery was kept in all the patients after tumor excision .Hoarseness and bucking induced by the injury of vagus nerve occurred in 13 cases, and bucking recovery in all the cases after 2 years follow up, and only one case remained mild hoarseness .Hypoglossal nerve injury occurred in 4 cases with tongue deviation , and the symptom recovery after 6 months follow up.No one had recurrent by the follow-up period ranging from 1 to 9 years. Conclusion Most carotid body tumors could be completely resected by tumor dissection method with the accurate treatment , thereby the continuity of carotid artery could be kept.The Matas pressing test of carotid artery or carotid artery balloon occlusion test is not necessarily to every patient .
8.Analysis of global trends in military medicine research
zhen Zhen ZHANG ; Liu YANG ; dong Xu FANG
Military Medical Sciences 2017;41(8):642-646
Objective To explore the trends of global research on military medicine,such as publication trends,research priorities,research topics,research routes and sources of publication.Methods The data was from the Web of Science core collection of Thomson Reuters Technology,Inc.,and the retrieval time was up to September 2016.The retrieval involved related disciplines of military medical papers published from WOS.Trends,research priorities,research programs,research routes and published sources were analyzed statistically by using Web of Science classification standards.Results A total of 42 986 articles were retrieved,and there were 257 research priorities according to this classification.In terms of the trends of military medicine related papers,the number of papers began to increase considerably in the late twentieth century after the two wave crests of two world wars.Over the past 5 years,more than 2000 papers have been published in this field.As for the spheres of research,the related papers involved 199 fields of research,155 of which had more than ten papers published.According to the analysis of hot spots of research,the range of high-frequency words involved was very extensive,including the type of disease (posttraumatic stress disorder,depression,and traumatic brain injury),the type of patients (veterans,female,and adult),regional distribution (the United States,Iraq,and Afghanistan),relevant parameters (prevalence,risk factors and mortality) and the related medical technology and means (nursing,exercise,prevention,modeling).There were 3132 periodicals involved in related papers,and there were 635 periodicals that published more than 10 papers.The number of military medical conference papers was relatively small(a total of 2914),involving 1771 meetings.The top 20 journals included Military Medicine,Aviation Space and Environmental Medicine,British Medical Journal,The Lancet,The Journal of the American Medical Association.Conclusion Through the retrieval research of main factors,we can see the basic developments of military medicine abroad.
9.The reliability and validity of the Chinese version of Profile of Fatigue Scale among the patients with sjogren′s syndrome
Qing DONG ; Xujuan XU ; Fengyan ZHOU ; Rong XU ; Zhen JIANG ; Xiaoyan ZHAO ; Duo QIAN
Chinese Journal of Practical Nursing 2015;(26):1999-2002
Objective To test the reliability and validity of the Chinese version of Profile of Fatigue Scale (PROF)among the patients with Sjogren′s syndrome. Methods The English version of PROF was translated into Chinese according to Brislin Translation Model. 107 patients with Sjogren′s syndrome were investigated to test its reliability and validity. Results The Cronbachαcoefficient , Guttman split-half coefficient, test-retest reliability and content validity of Chinese version of PROF were 0.976, 0.953, 0.872 and 0.875. Two factors were extracted by factor analysis and the cumulated variance was 80.75%. The structure of PROF was in line with the original scale. The criterion-related validity was 0.621 measured by comparing with visual analog scale of fatigue, and was -0.707 measured by comparing with vitality domain in the MOS item Short From Health Survey (SF-36). Conclusions The Chinese version of PROF has been proved to be reliable and valid. It can be used to measure the fatigue in Chinese patients with Sjogren′s syndrome.
10.Brucellosis in 4 children.
Gang LIU ; Shao-Ying LI ; Xi-Wei XU ; Guo-Li WANG ; Jing-Hui ZHEN ; Fang DONG
Chinese Journal of Contemporary Pediatrics 2008;10(3):423-425
Brucellosis
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diagnosis
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drug therapy
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Child
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Child, Preschool
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Female
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Humans
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Male