|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Molecular mechanism about lymphogenous metastasis of hepatocarcinoma cells in mice显示文摘AIM To investigate the correlation between lymphogenous metastasis and matrix metalloproteinases (MMPs) activity and the expression of Fas Iigand of tumor cells in lymph nodes.METHODES Fifty-six inbred 615-mice were equally divided into 2 groups and inoculated with Hca-F and Hca-P cells. Their lymph node metastatic rates were examined.Growth fraction of lymphocytes in host lymph nodes was detected by flow cytometry. The Hca-F and Hca-P cells were cultured with extract of lymph node, liver or spleen.The quantity of MMPs in these supernatants was examined by zymographic analysis. The expression of Fas ligand,PCNA, Bcl-2 protein of Hca-F and Hca-P cells in the mice were examined by immunohistochemistry. The apoptosis signals of macrophages in lymph nodes were observed with in situ DNA fragmentation.RESULTS On the 28th day post-inoculation, the lymph node metastatic rate of Hca-F was 80% (16/20), whereas that of Hca-P was 25% (5/20). The growth fraction of lymphocytes was as follows: in the Hca-F cells, the proliferating peak of lymphocytes appeared on the 14th day post-inoculation and then decreased rapidly, while in HcaP cells, the peak appeared on the 7th day post-inoculation and then kept at a high level. With the extract of lymph node, the quantity of the MMP-9 activity increased (P<0.01) and active MMP-9 and MMP-2 were produced by both Hca-F and Hca-P tumor cells, which did not produce MMPs without the extract of lymph node or with the extracts of the liver and spleen. The expression of Fas Ligand of Hca-F cells was stronger than that of Hca-P cells (P<0.01). The expressions of PCNA and Bcl-2 protein of Hca-F cells in the tumors of inoculated area were the same as that of Hca-P cells. In situ DNA fragmentation showed that the positive signals of macrophages were around HcaF cells.CONCLUSION Secretion of MMPs which was associated with metastatic ability of Hca-F and Hca-P tumor cells depends on the environment of lymph nodes. The increased expression of Fas ligand protein of Hca-F tumor cells with high lymphogenous metastatic potential in lymph nodes may help tumor cells escape from being killed by host lymphocytes. | Li Hou Ying Li Yong-Hua Jia Bo Wang Yi Xin Mao-Ying Ling Shen Lü Department of Pathology,Dalian Medical University,Dalian 116027,Liaoning Province,ChinaDepartment of Biochemistry,Dalian Medical University,Dalian 116027,Liaoning Province,China | 2001 | World Journal of Gastroenterology2001，7，4： | 47 |
| 2 | Glutathione S-transferases M1,T1 genotypes and the risk of gastric cancer:A case-control study显示文摘AIM Glutathione S-transferases (GSTs are involved in the detoxification of many potential carcinogens and appear to play a critical role in the protection from the effects of carcinogens. The contribution of glutathione Stransferases M1 and T1 genotypes to susceptibility to the risk of gastric cancer and their interaction with cigarette smoking are still unclear. The aim of this study was to determine whether there was any relationship between genetic polymorphisms of GSTM1 and GSTT1 and gastric cancer.METHODS A population based case - control study was carried out in a high-risk area, Changle County, Fujian Province, China. The epidemiological data were collected by a standard questionnaire and blood samples were obtained from 95 incidence gastric cancer cases and 94 healthy controls. A polymerase chain reaction method was used to detect the presence or absence of the GSTM1 and GSTT1 genes in genomic DNA. Logistic regression model was employed in the data analysis.RESULTS An increase in risk for gastric cancer was found among carriers of GSTM1 null genotype. The adjusted odds ratio (OR) was 2.63 [95% Confidence Interval (95% CI) 1.17-5.88], after controlling for age,gender, cigarette smoking, alcohol drinking, and fish sauce intake. The frequency of GSTT1 null genotype in cancer cases (43.16%) was not significantly different from that in controls (50.00%). However, the risk for gastric cancer in those with GSTM1 null and GSTT1 nonnull genotype was significantly higher than in those with both GSTM1 and GSTT1 non-null genotype (OR = 2.77,95% Cl 1.15- 6.77). Compared with those subjects who never smoked and had normal GSTM1 genotype, Ors were 1.60 (95% CI: 0.62- 4.19) for never smokers with GSTM1 null type, 2.33 (95% CI 0.88- 6.28) for smokers with normal GSTM1, and 8.06 (95% CI 2.83- 23.67) for smokers with GSTM1 null type.CONCLUSIONS GSTM1 gene polymorphisms may be associated with genetic susceptibility of stomach cancer and may modulate tobacco-related carcinogenesis of gastric cancer. | Lin Cai Shun-Zhang Yu Zuo-Feng Zhang Department of Epidemiology.Fujian Medical University,Fuzhou 350004,Fujian Province,ChinaDepartment of Epidemiology,Shanghai Medical University,Shanghai 200032,China Department of Epidemiology,UCLA School of Public Health,Los Angeles California,USA | 2001 | World Journal of Gastroenterology2001，7，4： | 22 |
| 3 | Extraction and purification of TGFβ and its effect on the induction of apoptosis of hepatocytes显示文摘AIM To extract and purify the transforming growth factor β (TGF β), and to demonstrate its biological activity in vivo and induction of apoptosis of hepatocytes in vitro.METHODS TGF β was isolated from fresh bovine platelets by acid/ethanol extraction method and purified with ion exchange and gel chromatography. The extracted TGF β was injected subcutaneously to mice, and its biological activity in vivo was observed 72 hfs post-injection by HE staining. The morphological changes were observed by HE staining and the occurrence of apoptosis was detected by TUNEL method after the human normal hepatic cell line QZG was treated with 8 μg@L 1 TGFβ for 12 hrs in vitro.RESULTS The molecular mass 25 ku TGF β protein was successfully extracted. It was able to induce localized granulation tissue formation in vivo. TGF β-treated hepatocytes showed obvious apoptotic morphological changes, including the pyknosis and dense-stained nuclei and cytoplasm, the fragmentary, annular or crescent nuclei, and the 'bubbling' cytoplasm. Moreover, its apoptotic rate was significantly higher than that of the control group (P<0.05).CONCLUSION Biological active TGF β protein is extracted and purified successfully from bovine platelets, and it is able to induce the apoptosis of hepatocytes. | Xiao-Hui Si Lian-Jun Yang Research Institute of Stomatology,the Ninth People’s Hospital,Shanghai Second Medical University,Shanghai 200011,ChinaDepartment of Pathology,Fourth Military Medical University,Xi’an 710033,Shaanxi Province,China | 2001 | World Journal of Gastroenterology2001，7，4： | 15 |
| 4 | Sleep deprivation increase the expression of inducible heat shock protein 70 in rat gastric mucosa显示文摘AIM To .investigate if sleep deprivation is able to increase the expression of inducible heat shock protein 70 in gastric mucosa and its possible role in mucosal defense.METHODS Rats for sleep disruption were placed inside a computerized rotating drum, gastric mucosa was taken from rats with 1, 3 and 7 d sleep deprivation. RT-PCR,immunohistochemistry and Western blotting were used to determine the expression of heat shock protein 70.Ethanol (500 mL@ L 1, I.g.) was used to induce gastric muceea damage.RESULTS RT-PCR, Western blotting and immunostaining confirmed that the sleep deprivation as a stress resulted in significantly greater expression of inducible heat shock protein 70 in gastric mucosa of rats. After the 500mL@ L-1 ethanol challenge, the ulcer area found in the rats with 7 d sleep deprivation (19.15 ± 4.2) mm2 was significantly lower (P<0.01) than the corresponding control (53.7 ± 8.1) mm2.CONCLUSION Sleep deprivation as a stress, in addition to lowering the gastric mucosal barrier, is able to stimulate the expression of inducible heat shock protein 70 in gastric mucosa of rats, the heat shock protein 70 may play an important role in gastric mucosal protection. | Xi-Zhong Shen Marcel W.L. Koo Chi-Hin Cho Department of Gastroenterology,Zhongshan Hospital,Fudan University,136 Yixueyuan Road,Shanghai 200032,ChinaDepartment of Pharmacology.Faculty of Medicine,University of Hong Kong,5 Sassoon Road,Pokfulam,Hong Kong,ChinaSupported by .Dr.Marcel W.L.Koo,Department of Pharmacology,FacuLty of Medicine,the University of Hong Kong,5 Sassoon Road,Hong Kong,China.Wlkoo@hkusua.hku.hk | 2001 | World Journal of Gastroenterology2001，7，4： | 14 |
| 5 | INFLUENCE OF NaCl DEPOSITION ON ATMOSPHERIC CORROSION OF A3 STEEL IN THE PRESENCE OF SO_2显示文摘The regularities of atmospheric corrosion of A3 steel deposited with different amountof NaCl exposed to the air containing 1ppm SO2 at 80% RH and 25℃ were studied inlaboratory. NaCl can accelerate the corrosion of A3 steel obviously under such con-dition. The relationship between the weight loss of A3 steel and the amount of NaCldeposition can be well described by using a quadratic function. Fourier transform in-frared spectroscopy (FTIR), X-ray diffraction (XRD), Scanning electron microscopyand electron dispersion X-ray analysis (SEM/EDAX) were used to characterize thecorrosion products. In the absence of NaCl, FeSO4 xH2O is the dominant corro-sion products, while Fe3O4, FeSO4@ H2O, β-FeOOH and γ-FeOOH dominate in thepresence of NaCl. | Q. Qu, C.W. Yan, L. Zhang , Y. Wan and C.N. CaoState Key Laboratory for Corrosion and Protection, Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110016, ChinaDepartment of Chemistry, Yunnan University, Kunming 650091, ChinaSchool of Chemical Science and Engineering, Liaoning University, Shenyang 110036, China | 2002 | Acta Metallurgica Sinica(English Letters)2002，15，5： | 13 |
| 6 | Identification of the epitopes on HCV core protein recognized by HLA-A2 restricted cytotoxic T lymphocytes显示文摘AIM To identify hepatitis C virus (HCV) core protein epitopes recognized by HLA-A2 restricted cytotoxic T lymphocyte (CTL).METHODS Utilizing the method of computer prediction followed by a 4 h 51 Cr-release assay confirmation.RESULTS The results showed that peripheral blood mononuclear cells (PBMC) obtained from two HLA-A2 positive donors who were infected with HCV could lyse autologous target cells labeled with peptide 'ALAHGVFAL (core TS0-158)'.The rates of specific lysis of the cells from the two donors were 37.5% and 15.8%,respectively. Blocking of the CTL response with anti-CD4 mAb caused no significant decrease of the specific lysis.But blocking of CTL response with anti-CD8 mAb could abolish the Iysis.CONCLUSION The peptide (core 150 - 158 ) is the candidate epitope recognized by HLA-A2 restricted CTL. | Hong-Chao Zhou De-Zhong Xu Xue-Ping Wang Jing-Xia Zhang Ying-Huang Yong-Ping Yan Yong Zhu Bo-Quan Jin Department of Epidemiology,the Fourth Military Medical University,Xi’an 710033,Shaanxi Province,ChinaDepartment of Immunology,the Fourth Military Medical University,Xi’an 710033,Shaanxi Province,China | 2001 | World Journal of Gastroenterology2001，7，4： | 11 |
| 7 | Multiphase hepatic scans with multirow- detector helical CT in detection of hypervascular hepatocellular carcinoma显示文摘BACKGROUND: Multirow-detector helical CT (MDCT) allows faster Z-axis coverage and improves longitudinal re- solution to scan the entire liver. This study was to evaluate the value of multiphase hepatic CT scans using MDCT in diagnosing hypervascular hepatocellular carcinoma (HCC). METHODS: Multiphase hepatic CT scans in 40 patients were carried out with a Marconi Mx8000 MDCT scanner. The scans of early arterial phase (EAP), late arterial phase (LAP) and portal venous phase (PVP) were started at 21, 34 and 85 seconds after injection of contrast medium, re- spectively. The number of detected lesions was calculated in each phase. The density of the liver and tumor was great- er than 1 cm for HCC, and the density of the liver and tumor in each phase was statistically calculated. RESULTS: A total of 61 lesions were found in the 40 pa- tients , and lesions greater than 1 cm were seen in 47 cases. The density differences between the liver and tumor were statistically significant (P<0.05) at the LAP and EAP and between the LAP, EAP and PVP. In the 61 lesions, the de- tectability in the EAP, LAP and the double arterial phases (DAP) was 32%, 87%, and 94%, respectively. Significant difference was found between the LAP plus PVP and the EAP plus PVP; but no significant difference was observed between the DAP plus PVP and the LAP plus PVP. CONCLUSIONS: The utility of MDCT scan in the liver has optimized the protocol of arterial phase scan. MDCT is possible to scan the entire liver in a real arterial phase and it is very valuable in the detection of small HCC. | Hong Zhao, Jin-Lin Yao, Ming-Jun Han, Kang-Rong Zhou and Fu-Hua Yan Zhuhai, ChinaDepartment of Radiology , and Department of Surgery Fifth Hospital, Zhongshan Universi- ty, Zhuhai 519000, China Department of Radiology, Zhongshan Hospi- tal, Fudan University, Shanghai 200032, China | 2004 | Hepatobiliary & Pancreatic Diseases International2004，3，2： | 10 |
| 8 | Relations of Budd-Chiari syndrome to prothrombin gene mutation显示文摘BACKGROUND: Budd-Chiari syndrome (BCS) is a type of disease characterized by portal hypertension and/or hy- pertension of the inferior vena cava (IVC) due to the ob- struction of the hepatic veins (HV) and/or intrahepatic IVC outlet. Being etiologically complicated and obscure, BCS can be acquired or idiopathic and several gene muta- tions may be contributable. This study was to explore whether prothrombin gene mutation (F G20210A) takes part in the pathogenesis of BCS and to investigate their cor- relativity. METHODS: In 38 proven BCS patients and 70 controls, polymerase chain reaction-restriction fragment length poly- morphism (PCR-RFLP) was used to find F G20210A mutation. To detect whether there are any mutations, four steps were taken: purification of genome DNA from whole blood, amplification of special fragment by polymerase chain reaction, digestion of the fragment via restriction en- donuclease, and analysis of results by polyacrylamide gel electrophoresis. RESULTS: F G20210A mutation was not detected in all patients and controls. CONCLUSIONS: No F G20210A mutation exists in Chi- nese patients with BCS, nor correlativity between the oc- currence of BCS and F G20210A mutation. The etiology of BCS in the Chinese needs further investigation. | Guo-Ling Lin, Pei-Qin Xu, Hua Qi, Jian-Hua Lian, Hong Zheng and Xiao-Wei Dang Zhengzhou, ChinaDepartment of General Surgery, First Affiliated Hospi- tal of Zhengzhou University the Faculty of Cytobiology and Medical Genetics, Medical School, Zhengzhou Univer- sity , Zhengzhou 450052, China | 2004 | Hepatobiliary & Pancreatic Diseases International2004，3，2： | 9 |
| 9 | A study on pathogenicity of hepatitis G virus显示文摘AIM To study the pathogenicity of hepatitis G virus (HGV) and observe the genesis and pathological process of hepatitis G.METHODS HGV-RNA in serum was detected by RT-PCR assay. The immunohistochemical assays of liver tissue were performed with HGV monocoloned antibody (McAb)expressed from the region of HGV NS5 nucleic acid sequence. The clinical and pathological data of 52 patients with hepatitis G were discussed. In animal experiment,the Chinese Rhesus monkeys were infected with the serum of a patient with HGV infection. And the dynamic changes in serology and liver histology of animals were observed.RESULTS One hundred and fifty-four patients with HGVRNA positive were selected from 1552 patients with various kinds of hepatitis. Of 154 patients with HGV infection, 52 were infected with HGV only, which accounted for 33.8% (52/154) and 102 with positive HGVRNA were super-infected with other hepatitis viruses,which accounted for 66.2% (102/154). The clinical and pathological observation showed that the acute and chronic hepatitis could be induced by HGV. The slight abnormality of transaminases ALT and AST in serum of monkeys lasted nearly 12 months and histological results showed a series of pathological changes.CONCLUSION HGV is a hepatotropic virus and has pathogenicty. | Jia-Zhang Xu Zhi-Guo Yang Mei-Zhao Le Mao-Rong Wang Chang-Lun He Yun-Hua Sui Institute of Hepatology,the 81st Hospital of PLA,Nanjing 210002,Jiangsu Province,ChinaDepartment of Pathology,the 81st Hospital of PLA,Nanjing 210002,Jiangsu Province,China | 2001 | World Journal of Gastroenterology2001，7，4： | 8 |
| 10 | Cloning of differentially expressed genes in human hepatocellular carcinoma and nontumor liver显示文摘INTRODUCTIONThe mechanism of hepatocellular carcinoma(HCC)is still unclear,although some genes have been found to play a role in the transformation of liver cells,and a variety of studies have described differences in gene expression which distinguished tumor from nontumor[1-6].The new genes,especially the functional genes directly related with tumor are still worth being found.The purpose of our study is to find the different genes between human liver tumor and normal tissues using suppression subtractive hybridization. | Xiao-Yan Cao Jie Liu Zhao-Rui Lian Marcy Clayton Jia-Lu Hu Ming-Hua Zh Dai-Ming Fan Mark Feitelson Institute of Digestive Diseases,Xijing Hospital,Fourth Military Medical University,Xi’an 710033,Shaanxi Province,ChinaDepartment of Pathology & Cell Biology,Thomas Jefferson University,Philadelphia,PA19107 USADepartment of Pathology,Second Military Medical University,Shanghai 200433,China | 2001 | World Journal of Gastroenterology2001，7，4： | 7 |
| 11 | The Mitochondrial DNA Mutation at Position 11778 in Chinese Families with Leber's Hereditary Optic Neuropathy显示文摘We amplified the 340 bp of mitochondrial DMA (mtDNA) by PCR including the recognized sequence of restriction enzyme of SfaN I . After amplification and digestion of SfaN I , two bands of 190 bp and 150 bp appeared in the mtDNA of four normal individuals but only one band of 340 bp appeared in the mtDNA with the mutation of G to A at the site of the nucleotide 11778 because such mutation destroyed the recognized sequence of SfaN I . We studied the mtDNAs of the patients with Leber's hereditary optic neur... | Lishan Zhang, Ying Huang, Fangyuan Li, ShijunWang, Bin Zhu Ziping Zhang, Yi Tong, Jinjuan GaoDepartment of Biology, Nanjing Railway Medical College Nanjing 210009, ChinaDepartment of Opthahalmology, Fujian Medical College Fuzhou 350005, China | 1994 | 眼科学报1994，10，3： | 6 |
| 12 | Treatment of malignant digestive tract obstruction by combined intraluminal stent installation and intra-arterial drug infusion显示文摘AIM To study the palliative treatment of malignant obstrution of digestive tract with placement of intraluminal stent combined with intra-arterial infusion of chemotherapeutic drugs.METHODS A total of 281 cases of digestive tract malignant obstruction were given per oral (esophagus,stomach, duodenum and jejunum), per anal (colon and rectum ) and percutaneous transhepatic ( biliary )installation of metallic stent. Among them, 205 cases received drug infusion by cannulation of tumor supplying artery with Seldingers technique.RESULTS Altogether 350 stents were installed in 281 cases, obstructive symptoms were relieved or ameliorated after installation. Occurrence of restenotic obstruction was 8 - 43 weeks among those with intraarterial drug infusion, which was later than 4 - 26 weeks in the group with only stent installation. The average survival time of the former group was 43 (3 - 105) weeks,which was significantly longer than 15 (3- 24) weeks of the latter group.CONCLUSION Intraluminal placement of stent combined with intra-arterial infusion chemotherapy is one of the effective palliative therapies for malignant obstruction of the digestive tract with symptomatic as well as etiological treatment. | Ai-Wu Mao Zhong-Du Gao Jia-Yu Xu Ren-Jie Yang Xiang-Seng Xiao Ting-Hui Jiang Wei-Jun Jiang Department of Interventional Radiology,Shanghai S.T,Luke’s Hospital,768 Yu Yuan Road,Shanghai 200050,ChinaDepartment of Gastroenterology Rui Jin Hospital,Shanghai Second Medical University,Departrnent of Tumor Hospital,Beijing Medical UniversityDepartment of Imaging Chang Zheng Hospital,Shanghai Second Military Medical University | 2001 | World Journal of Gastroenterology2001，7，4： | 6 |
| 13 | Some Simple Estimates for the Singular Values of Matrices显示文摘Abstract We first provide a simple estimate for ||A-1||∞ and ||A-1||1 of a strictly diagonally dominant matrixA. On the Basis of the result, we obtain an estimate for the smallest singular value of A. Secondly, by scalingwith a positive diagonal matrix D, we obtain some simple estimates for the smallest singular value of an H-matrix, which is not necessarily positive definite. Finally, we give some examples to show the effectiveness ofthe new bounds. | Chuan-long WANG, Guo-jian ZHANGDepartment of Mathematics, Normal College of Shanxi University, Taiyuan 030012, ChinaDepartment of Applied Mathematics, Taiyuan University of Technology, Taiyuan, 030024, China | 2002 | Acta Mathematicae Applicatae Sinica2002，18，1： | 4 |
| 14 | Effects of TCMP-1 on the changes of platelet endothelial cell adhesion molecule-1 expression in acute edematous pancreatitis显示文摘BACKGROUND: Traditional Chinese medicine is a potent agent in the management of clinical and experimental acute pancreatitis (AP), but the molecular mechanism of its the- rapeutic action is unclear. Numerous experimental and clinical studies have shown that platelet endothelial cell ad- hesion molecule-1 (PECAM-1) is pivotal to leukocyte re- cruitment, which results in microcirculatory injury during inflammation, but its role in acute pancreatitis is poorly un- derstood. We investigated the effects of a compound of tra- ditional Chinese medicine pancreatitis-1 (TCMP-1) on the changes of platelet endothelial cell adhesion molecule-1 (PECAM-1) expression on polymorphonuclear leukocytes (PMNs) in acute edematous pancreatitis (AEP). METHODS: The model of acute pancreatitis was estab- lished by subcutaneous injection of caerulein, and TCMP-1 treated groups were given TCMP-1 by catheterization from mouth to stomach (20 ml/kg) immediately after first time subcutaneous injection of caerulein. The changes of expres- sion of PECAM-1 on leukocytes from the blood of the splenic vein and inferior vena cava were determined by flow cytometry. RESULTS: In the AEP group, expression of PECAM-1 on PMNs was not significantly different between pancreatic microcirculation and systemic circulation at AEP2h and AEP4h time point. Then from AEP4h time point to AEP8h time point, expression of PECAM-1 was up-regulated in systemic circulation while it was down-regulated in pancre- atic microcirculation and was significantly different be- tween pancreatic microcirculation and systemic circulation at AEP8h time point (P<0.05). In the TCMP-1 treated group, compared with the AEP group, expression of PE-CAM-1 on PMNs decreased in different levels between pan- creatic microcirculation and systemic circulation and was of significant difference at AEP8h time point (P <0.05). CONCLUSION: Inhibition of PECAM-1 expression on PMNs may prevent PMNs from transmigration through the endo- thelium and may be one of the treatment mechanisms of TCMP-1 decoction on AEP. | Hong-Kai Gao, Zong-Guang Zhou, Tao He, You-Qin Chen, Fang-Hai Han and Cun Wang Chengdu, ChinaDepartment of General Surgery & Division of Diges- tive Surgery, West China Hospital, Sichuan University, Chengdu 610041 , China | 2004 | Hepatobiliary & Pancreatic Diseases International2004，3，2： | 4 |
| 15 | Prevention of grafted liver from reperfusive injury显示文摘INTRODUCTIONThe incidence of primary non-function(PNF)of grafted liver in the early postoperative stage is 2%-23%[1-4],its main cause is the ischemic-rechemic injure[5,6].In this experiment,anisodamine was added into the preserving fluid and the grafted liver was rewarmed at different temperatures to protect the cell membranc and prevent ischemic-reperfusive injury. | Kai Ma Yang Yu Xian-Min Bu Yan-Jun Li Xian-Wei Dai Liang Wang Yang Dai Hai-Ying Zhao Xiang-Hong Yang Department of General Surgery,Second Clinical College,China Medical University,Shenyang 110003,Liaoning Province,ChinaDepartrnent of Physiology,Shenyang Physical Education College,Shenyang,Liaoning Province,ChinaDepartment of Pathology,China Medical University,Shenyang,Liaoning Province,China | 2001 | World Journal of Gastroenterology2001，7，4： | 4 |
| 16 | Focal nodular hyperplasia of the liver: pathological analysis of 11 cases显示文摘BACKGROUND: Focal nodular hyperplasia (FNH) is a benign tumor-like lesion of the liver, predominantly affect- ing women. Its etiology is obscure and its pathogenesis is poorly understood. FNH should be differentiated from oth- er benign and malignant hepatic lesions. The aim of this study was to explore the pathological characteristics of FNH of the liver. METHODS: Eleven patients with FNH were studied retro- spectively by using hematoxylin and eosin, immunohisto- chemical and histochemical staining. RESULTS: In 8 female and 3 male FNH patients aged 19 to 54 years (mean 32), most of lesions showed central scars macroscopically. Microscopically 8 patients were found of classical type, 2 were of telangiectic type, and 1 was of mixed type. CONCLUSION: FNH is an uncommon benign hyperplastic lesion of the liver. It should be differentiated from hepato- cellular adenoma, alpha-fetoprotein negative hepatocellular carcinoma, and fibrolamellar carcinoma. | Yi Pan, Zhao-Ming Wang, Ling-Jun Mou, Xiao-Dong Teng, Zhou-Jun Zheng and Li-Xiong Ying Hangzhou, ChinaDepartments of Pathology and General Surgery First Affilia- ted Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China | 2004 | Hepatobiliary & Pancreatic Diseases International2004，3，2： | 3 |
| 17 | Bleaching effect and nonvolatile holographic storage in doubly doped LiNbO_3:Fe:Cu crystals显示文摘The bleaching effect, i.e. the crystal shows that decoloration after it is illuminated by ultraviolet light, has been observed in congruent LiNbO3:Fe:Cu crystals. Based on this bleaching effect, a new technique including the recording phase by two interfering red beams and fixing phase by both UV light and a coherent red beam has been experimentally investigated to realize nonvolatile holographic storage in LiNbO3:Fe:Cu. The results of proof-of-concept experiments confirm that bleaching effect becomes an alternative physical mechanism for nonvolatile holographic storage with high recording sensitivity and weak light-induced scattering noise. | LIU Dean, LIU Liren, ZHOU Changhe, REN Liyong & LI GuangaoShanghai Institute of Optics and Fine Mechanics, Chinese Academy ofSciences, Shanghai 201800, ChinaDepartment of Physics, Nankai University, Tianjin 300071, China | 2002 | Chinese Science Bulletin2002，47，20： | 3 |
| 18 | Boundary Value Problems for Singular Second-Order Functional Differential Equations显示文摘Abstract Positive solutions to the boundary value problem, y’’=-f(x,y(w(x)) 0<x<1, αy(x)-βy’(x)=ξ(x), a≤x≤0, γy(x)+δy’(x)=η(x), 1≤x≤b,are obtained by applying the Schauder fixed point theorem,where w(x)is a continuous function defined on [0,1]and f(x,y)is a function defined on(0,1)×(0,∞),which satisfies certain restrictions and may have singularity aty=0.The result corrects and improves an existence theorem due to Erbe and Kong. | Hui-zhao Liu, Da-qing Jiang, Yan WangDepartment of Applied Mathematics, Hebei University of Technology, Tianjin 300130, ChinaDepartment of Mathematics, Northeast Normal University, Changchun 130024, China | 2002 | Acta Mathematicae Applicatae Sinica2002，18，2： | 2 |
| 19 | Permanence in Nonautonomous Predator-prey Lotka-Volterra Systems显示文摘In this paper some easily verifiable sufficient conditions on the permanence of solutions for general nonautonomous two-species predator-prey model are established. These new criteria improve and extend the results given by Ma, Wang, Teng and Teng, Yu. | Wu-jun Sun, Zhi-dong Teng, Yuan-hong YuDepartment of Applied Mathematics. Shanghai Jiaotong University, Shanghai 200030, ChinaDepartment of Mathematics, Xinjiang University. Urumqi 830046.Institute of Applied Mathematics, Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100080, China | 2002 | Acta Mathematicae Applicatae Sinica2002，18，3： | 2 |
| 20 | Modified High-order Upwind Method for Convection Diffusion Equation显示文摘Abstract In this paper, we study the high-order upwind finite difference method for steady convection-diffusionproblems. Based on the conservative convection-diffusion equation, a high-order upwind finite difference schemeon nonuniform rectangular partition for convection-diffusion equation is proposed. The proposed scheme is inconversation form, satisfies maximum value principle and has second-order error estimates in discrete H^1 norm.To illustrate our conclusion, several numerical examples are given. | Wei-dong ZHAO, Dong LIANGSchool of Mathematics and System Sciences, Shandong University, Jinan 250100, ChinaDepartment of Mathematics and Statistics, York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, Canada | 2002 | Acta Mathematicae Applicatae Sinica2002，18，1： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员