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A kind of bacteria circular changed the life circle bacilli to cocci identified from the skin inflammation

Chinese Journal of Clinical Laboratory Science.2001;19(3):161-162.

Objective To investigate a kind of inflammatory pathogen of infectious skin lesion and its position of the bacteria classification. Methods Based on the phenotypic properties of morphology,physiology and biochemical et al.The identification of bacteria was made almost thoroughly and systemically.Results A unique kind of gram-positive bacteria were separated from the lesion of the disease.Which featured by a bacilli to cocci circulation,obligate acrobes,inactive of biochemical reaction and resistance to conventional antibiotics.Conclusion The bacteria are classified into a rare kind of opportunistic pathogen.Few references both at home and abroad has seen so far according to its phenotypic properties,the bacteria is Brevibacterium epidermids which had never been reported at domestic.

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Detection of specific antibody IgM of Lyme disease by ELISA using recombinant outer surface protein C of borrelia burgdorferi

Yueping JIA ; Guoping ZHOU ; Liping ZENG ; Feng GAO

Chinese Journal of Clinical Laboratory Science.2001;19(3):159-160.

Objective To detect specific IgM of Lyme disease indirect ELISA using recombinant outer surface protein C(OpsC)of Borrelia burgdorferi in vitro was established. Methods Coated concentration of recombinant OspC and dilution multiple of serum anol concentration of enzyme secondary antibody were determined by block,and degree of percision.specificity interference and interruption test were performed. Results Best concentration of OspC was 150 μg/L.within-run CV was 6.3% between-run CV was 11.8%.Confimred 33 Lyme patients in clinic and 57 controls were examined meanwhile by this method and import ELISA kit,coincidena rate was 97.8%.Conclusion This ELISA using recombinant OspC was a good method for early diagnostic of Lyme disease.

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Effects of ultraviolet irradiation on platelet

Jianfeng LUAN ; Peiyuan ZHU ; Qianhong LEI ; Baizhen WAN ; Dong YE

Chinese Journal of Clinical Laboratory Science.2001;19(3):157-158.

Objective To explore the effects of ultraviolet irradiation on platelet. Methods Three assays were been developed.These include platelet count,release of alpha granule membrane protein 140(GMP-140)and morphology of platelet by electron micrograph in those samples before and after ultraviolet irradiation.Results Compared with the nonirradiated controls,the irradiated units showed significant changes including decrease of platelet count,increase of release of GMP-140 and platelet lesion in morphology.Conclusion Ultraviolet irradiation may have activation and lesion effect in platelet.

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Dynamic detection of T cell subsets and CD3＋HLA-DR＋T cells in peripheral blood with hand allograft recipients

Yurong QIU ; Chunli YANG ; Qian WANG ; Fei LIU ; Xiaofei ZHENG

Chinese Journal of Clinical Laboratory Science.2001;19(3):155-156.

Objective To study dynamic changes of T cell subsets and CD3＋HLA-DR＋T cells in peripheral blood of composite tissue transplantation-hand allograft recipients. Methods The levels of CD3＋、CD3＋CD4＋、CD3＋CD8＋、CD3＋HLA-DR＋T cells and ratio of CD4/CD8 in peripheral blood of hand allograft recipients in different periods were examined by using flow cytometry.The recipients before transplantation were as the control groups.Results The first day after transplantation,the levels of CD3＋、CD3＋CD4＋、CD3＋CD8＋、CD3＋HLA-DR＋T cells and ratio of CD4/CD8 all began to descend.The 3th to 5th day after transplantation,the levels were the lowest.The 8th day,the levels of CD3＋、CD3＋CD4＋、CD3＋CD8＋、CD3＋HLA-DR＋T cells and ratio of CD4/CD8 were eventually rised and go to stable 15th day after transplantation.But the levels of CD3＋、CD3＋CD4＋and value of CD4/CD8 were still lower than those of the contols,and the levels of CD3＋CD8＋、CD3＋HLA-DR＋T cells were higher distinctly.Conclusion Dynamic changes of T cell subsets and active T cells in peripheral blood of composite tissue transplantation-hand allograft recipients were accordant with that of renal allograft recipients with stable period and with stable clinical state of the hand transplantation recipients.

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Evaluation of direct method for measuring low-density lipoprotein cholesterol

Juan HE ; Qinghua LI ; Qiang DAI

Chinese Journal of Clinical Laboratory Science.2001;19(3):152-154.

Objective To evaluate the precise,accurate and specific of two direct methods for measuring low-density lipoprotein cholesterol(LDL-C)based on the principle of selective hydrolysys. Methods Both DAIICHI and Randox reagents were compared with PVS method and the ultracentrifugally separated HDL and LDL fractions were used.Results Both methods all had good precise,the total CV was 3.96%～4.42%(Daiichi)and 0.78%～3.19%(Randox),repectively.The average concentrations of 48 serum samples were 3.68±1.23 mmol/L(PVS method),3.25±1.11 mmol/L(DAIICHI method)and 3.37±1.21 mmol/L(Randox method),respectively.There was no statistics difference between the results from PVS method and other two direct methods.Furthermore it indicated that the results determined by both direct methods had good relationship with that by PVS method.It also indicated that both direct methods had good specific to LDL-C.The dilute test demonstrated that there were good linearity between both direct methods of LDL-C and the linearity range was 9.28 mmol/L at least.Conclusion The direct methods for determining LDL-C based on the principle of selective hydrolysis possessed good precise and accurate and specific to LDL-C,and was meet with clinical application.

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Enzymatic assay of creatinine in serum and urine with creatinine iminohydrolase coupled glutamate dehydrogenase

Guobing XU ; Lihua ZHU ; Tiean XIA

Chinese Journal of Clinical Laboratory Science.2001;19(3):149-151.

Objective To develop an improved enzymatic method for assaying creatinine in serum and urine. Methods Cratinine iminhydrolase catalyzes the conversion of creatinine to N-methylhydantoin and ammonia,the later combines with 2-oxoglutarate and NADPH in the presence of glutamate dehydrogenase.Before beginning the reaction sequence,endogenous ammonia is removed by an “ammonia scavenger system”that involves the same auxiliary reaction.The NADPH and 2-Oxoglutarate consumed are restored through a reaction catalyzed by isocitrate dehydrogenase.The activity of this strictly magnesium-dependent enzyme is completely blocked by magnesium-complexing reagent that acts promptly whenever the reaction has started with creatinine iminohydrolase as startor.The reaction is monitored kinetically by measuring the NADPH decrease via its absorbance at 340nm.Results The method affords a simple,rapid,and sensitive assay with good precision and extended linearity.Test results compare closely with the HPLC precedure.The proposed method is not subject to interference from several metablites or from the drugs used commonly in clinics.Conclusion The method is easily automated and is suitable for routine work in clinical laboratories.

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Measuring adenosine desaminase with continous-monitoring method

Youli ZHOU ; Jing FONG ; Dayong MAO ; Dekui LIE

Chinese Journal of Clinical Laboratory Science.2001;19(3):147-148.

Objective A new Continous-monitoring. Methods Determinating adenosine desaminase was established,and its experiment conditions including pH,substract concentration et al,and methodological performance were investigated.In this study,Two reagents were used,reagent one including 6 mmol/L α-ketoglutarate acid,0.35 mmol/L NADH,0.8 mmol/L ADP,0.1 mmol/L EDTA-Na2,1000U/L glutaic dehydrogenase.Reagent two including 12 mmol/L adenosine.Results The linearity range of this method can reach 97 U/L,the variance within batch and between batch were 4.9% and 6.53% respectively.Correlation analysis showed there was significant correlation between ours and Berthelot′s method.Conclusion The continous-monitoring method is accurate,simple and easy to be used in clinic.

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A enzymatic method of the determination of calcium in serum

Xingliang JIANG ; Zhong TANG ; Jun ZHANG

Chinese Journal of Clinical Laboratory Science.2001;19(3):145-146.

Objective A enzymatic method for measurement of calcium in serum by using urea amidolyase was introduction. Methods Double reagent two-point method.TEA buffer(pH 8.0,200 mmol/L)was used as the buffer solution.The first reagent consisted of sodium bicarbonate 26.0 mmol/L,NADPH 0.4 mmol/L,2-oxoglutaric acid 8.0 mmol/L,urea amidolyase 115 U/L and GLDH 43.0 kU/L.The second reagent contained sodium bicarbonate 26.0 mmol/L and ATP 6.2 mmol/L in the buffer solution.Results The Linearity range was 0.5～5.0 mmol/L.The average rate of recovery was 102.7%.The average within-run and between-run CV were 2.13% and 2.69%.Camparison with OCPC(X1)，showed that Y1=1.02X1-0.021,r=0.981,and with Arsenazo Ⅲ(X2),Y2=0.99X2+0.03,r=0.978.No interference from as much as 300 μmol/L of bilirubin,4 g/L of hemoglobin,2.5 mmol/L of magnesium,2.0 mmol/L of ammonium ion and 8.0 mmol/L of triglyceride.Conclusion This method was simple,accurate and ripid,suitable for automatic analysis of calcium in serum.

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A preliminary study on fecel-oral transmision of TT virus

Bo HE ; Jing ZHOU ; Lisheng REN ; Xuan CAI

Chinese Journal of Clinical Laboratory Science.2001;19(3):142-144.

Objective To study the fecel-oral and blood transfusion of TT virus. Methods Paired feces and serum samples from 6 patients with type B and/or C hepatitis were tested for TTV DNA and its titers by PCR with seminested primers.Genotypes were determined after their sequences were compared with the original N22 and TA278 clone.Results TTV DNA was detected in sera from all patients,while it was detected in feces from 3 patients,including 2 with high viral titers in serum.The detection of fecal TTV DNA was dependent on the viral titers in serum.TTV isolates in 3 pairs of feces and serum had identical sequence of 222 base pairs.Their genotypes were 1a,1b and 2,respectively.Conclusion The excretion of TTV into feces indicates that TTV would be transmitted not only parenterally but also nonparenterally by a fecal-oral route.

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Inquire into the relationship between diabetic peripheral neuropathy factors and antigangliosides antibody

Weiya ZHOU ; Ni LI ; Hua ZHONG ; Xiaodong YAN ; Hui CHEN

Chinese Journal of Clinical Laboratory Science.2001;19(3):140-141.

Objective Inquire into the relationship between diabetic peripheral neuropathy(DPN)pathogenic factor and Antigangliosides antibody(Anti-GS-Ab)in type 2 diabetes mellitus. Methods It was examined by enzyme-linked immunosorbent assays(ELISA)to the levels of serum Anti-gangliosides(Anti-GS)in 2 DM and DPN as well as healthy.Results The positive rate of Anti-GS-IgM,IgG in DPN group were 46.7% and 20.0%.repectivily it was obviously higher than normal group and 2 DM group.Conclusion The relationship between the DPN and Anti-GS-Ab is a close.It show that Anti-GS-Ab play an important role in DPN pathological process.

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