1.Study on the correlation of intra-operative hyaluronic acid changes with hepatic allografts cold ischemia-reperfusion injury in liver transplantation
Journal of Medical Postgraduates 2003;0(08):-
Objective:To probe the correlation of intra-operative hyaluronic acid(HA) changes with hepatic allografts cold ischemia reperfusion injury in liver transplantation.Methods:The patients with orthotopic liver transplantation were assigned to 3 groups:① group A :liver allografts were stored in University of Wisconsin's solution(0℃) for 5-6 h before implantation;② group B :liver allografts were stored in U W's solution(0℃) for 8-9 h before implantation;③ group C :liver allografts were stored in U W's solution(0℃) for 12 h before implantation.The serum samples were taken up at 5 min,60 min,120 min,180 min after the donor liver was transplanted and reperfused to detect the concentration of HA.Results:After donor liver was transplanted and reperfused,serum HA concentration decreased immediately and gradually.HA decreased rate :group A 4.58 ?g/L?min-1,group B 4.16 ?g/L?min-1,group C 2.26 ?g/L?min-1.Serum HA decrease rate was faster in group A and B than that in group C(P
2.Alarm failure and its countermeasure when measuring high-concentration enzyme by biochemical analyzer
Chinese Medical Equipment Journal 1989;0(02):-
Modern fully automatic biochemical analyzer makes enzyme measurement accurate, specific and practical, but alarm failure happens sometimes and thus determinate error appears. To find out the inducement to alarm failure, Olympus AU2700 and ADVIA 1650 fully automatic biochemical analyzer are used to measure the serum liver enzyme from 450 cases of post-liver-transplantation patients.
3.Liver cancer CT image enhancement using wavelet transform
Chinese Medical Equipment Journal 1993;0(06):-
This paper introduces the wavelet transform with multiresolution for liver cancer CT image enhancement. As the wavelet transform with compact support, orthogonality and approximately symmetry, SymletsA (sym4) wavelet family is applied to the two-layer multiscale decompose of the CT image. The decomposed wavelet coefficients are processed with the threshold values of 550, 350 and 250, with the low -frequency region intensified and the high-frequency one weakened. Then the image is reconstructed and thus the image is enhanced. Wavelet transform proves efficient in CT image enhancement.
5.The von Clauss method for fibrinogen assay and its influential factors
Feng CHENG ; Dan WANG ; Xiaohui ZHU
Chinese Journal of Laboratory Medicine 2000;0(06):-
Objectives To study the influential factors of the von Clauss method and to promote the method for fibrinogen assay in clinical laboratories in China. MethodsKits of foreign and domestic products were used. Calibration curves for fibrinogen determination were established, and calibration plasma was used for comparison. Effects of pH value, thrombin activity, and temperature on the measurement were studied.Results The reproducibility of the von Clauss method using domestic thrombin and related reagents was excellent, the within day CV being 0.039 1, and the between day CV 0.049 7. The percentage variations of calibration plasma determination, with the foreign fibrinogen assay kits using domestic reagents, were +3.17% , +4.76%, and -6.03%, respectively. Determination of a lyophilized plasma using the two sources reagents showed similar results.Conclusions Thrombin and relevant reagents produced in China could be used as a substitute for kits purchased abroad, which would promote the use of von Clauss method in clinical laboratories of China.
6.Clinical efficacy of low-dose methimazole therapy in patients with subclinical hyperthyroidism complicated by paroxysmal atrial fibrillation
Fuman DU ; Yuzhi YANG ; Weimin WANG ; Kun FENG ; Dan WANG
Chinese Journal of Endocrinology and Metabolism 2011;27(5):420-421
Twenty-seven patients with subclinical hyperthyroidism(SH)complicated by paroxysmal atrial fibrillation(PAF)were treated with methimazole plus bisoprolol.All patients were examined by Doppler echocardiogram and 24 h ambulatory electrocardiograms before and 3 months after treatment.Serum FT3,FT4,and TSH levels were measured with RIA.The results showed that low-dose methimazole therapy could improve the left ventricular diastolic function(P < 0.01)and help maintain sinus rhythm.The incidence of subclinical hypothyroidism was low.Low-dose methimazole was effective and safe in patients with SH complicated by PAF.
7.Interpretation and Thinking about Global Vaccine Safety Blueprint
Yali WANG ; Dan WANG ; Hongyun FENG ; Duo DONG
China Pharmacy 2015;(26):3611-3613
OBJECTIVE:To improve the ability of vaccine post-marketing surveillance,and clearly define the development di-rection of it in China. METHODS:Though introducing the background,strategic objective and operation objective of Global Vac-cine Safety Blueprint,the situation of vaccine post-marketing surveillance in China was analyzed. RESULTS&CONCLUSIONS:Vaccine post-marketing surveillance have developed fast in China recent years and get generally confirmation. However,compared with the goals in the blueprint,there are some activities should be strengthened,such as active surveillance,signal analysis and da-ta standardization,etc. We should take use of the opportunity offered by WHO and other international organizations to shrink the gap between our country and the advanced countries. Drawing support from WHO and other international institutions,vaccine post-marketing surveillance can step on the new level in China.
9.Serum levels of interleukin-36 and its receptor antagonist in patients with psoriasis and their correlations with disease severity
Dan SHU ; Hongzhong JIN ; Baoxi WANG ; Fei SU ; Feng LI
Chinese Journal of Dermatology 2014;47(7):469-472
Objective To evaluate the relationship of serum levels of interleukin (IL)-36α,IL-36β and IL-36γas well as their receptor antagonist IL-36Ra with disease severity in patients with psoriasis.Methods Venous blood samples were collected from 45 patients with generalized pustular psoriasis (GPP),34 patients with psoriasis vulgaris (PV),and 37 healthy human controls.Enzyme-linked immunosorbent assay (ELISA) was performed to determine the serum levels of IL-36α,IL-36β,IL-36γ and IL-36Ra.Nonparametric Mann-Whitney test was conducted to compare the levels of IL-36 and IL-36Ra among these groups,and Spearman's rank correlation analysis to assess the relationship between the serum levels of IL-36 and IL-36Ra and disease severity.Results No statistical difference was observed in the serum levels of IL-36 or IL-36Ra among the patients with GPP,patients with PV,and healthy human controls.The serum levels of IL-36β and IL-36γ (given as the median ± interquartile range) were significantly higher in 27 patients with GPP during episodes of pustules ((12.101 ± 11.315) ng/L and (34.541 ± 15.580) ng/L respectively) and in 7 patients with severe GPP ((11.218 ± 9.318) ng/L and (38.536 ± 17.332) ng/L respectively) than in the healthy human controls ((5.355 ± 9.020) ng/L and (23.052 ± 22.410) ng/L respectively,P < 0.05 or 0.01).The serum level of IL-36γwas positively correlated with that of IL-36β in patients with GPP,patients with PV,and the healthy human controls (r =0.85,0.86,0.91,respectively,all P < 0.01),and both IL-36β and IL-36γserum levels were lowly and positively correlated with the severity of GPP (r =0.33,0.41,respectively,both P < 0.05).A positive correlation was also observed between the serum level of IL-36β and psoriasis area and severity index (PASI) scores in patients with PV (r =0.54,P < 0.01).Conclusions The serum levels of IL-363 and IL-36γ are lowly and positively correlated with disease severity in patients with GPP,suggesting that IL-36β and IL-36γplay an important role in the pathogenesis of GPP.
10.The effect of Gegen Qinlian decoction on serum high sensitive C-reactive protein expression in rats with pe-riodontitis and atherosclerosis
Xin LUO ; Xiaojie FENG ; Dan WANG ; Wei PENG
Journal of Practical Stomatology 2015;(2):180-183
Objective:To observe the effect of Gegen Qinlian decoction on serum high sensitive C-reactive protein(hs-CRP)expres-sion of rats with periodontitis and atherosclerosis(P-AS).Methods:40 male Wistar rats were randomly divided into 2 groups:control group(A,n=1 0),P-AS group(B,n=30).5 rats in group A and B were used for the identification of P-AS model.Then rats with P-AS in group B were randomly divided into 5 groups(n=5)and administered with saline(B1 ),atorvastatin(B2),metronidazole (B3),atorvastatin+metronidazole(B4)and Gegen Qinlian decoction(B5)respectively for 4 weeks.Serum hs-CRP level was assayed by ELISA.Periodontal attachment loss(AL)and artery change were examined by pathology.Results:Serum hs-CRP level in group B1-5 was higher than that of group A(P<0.01 ).Serum hs-CRP level of group B4 and B5 was lower than that of group B1-3(P<0.01 ),B4 vs B5,P>0.05.The inflammation of periodontal tissues in group B2-5 was improved more than that in group B1 .AL in group B4 and B5 were lower than that in other groups(P<0.01 ),B4 vs B5,P>0.05.Histopathological observation of arteries re-vealed that there was no foam cell in group B4 and B5 ,the artery wall in group B4 and B5 was more even and muscle fibers were ar-ranged more regular.Conclusion:Gegen Qinlian decoction may decreas serum hs-CRP expression and depress the development of pe-riodontitis and atherosclerosis.