1.Effects of p38 MAPK in inflammation reaction of severe acute pancreatitis
Haifeng GUO ; Huayang LI ; Tieling LI
Chinese Journal of Biochemical Pharmaceutics 2014;(3):19-20,23
Objective To investigate the expression of p38 MAPK gene and p38 MAPK protein,and explore the effect of p38 MAPK in inflammation reaction of severe acute pancreatitis.Methods 48 cases with severe acute pancreatitis were chosen as research group,and another 48 healthy cases as control group.The expression of p38 MAPK gene were investigated by RT-PCR,and the expression of p38 MAPK and P-p38 MAPK protein were investigated by western blot. Results The expression of p38 MAPK mRNA,p38 MAPK protein and P-p38 MAPK protein in research group were higher than that in control group,the differences were all statistically significant(P<0.05 ).Conclusion The expression of p38 MAPK gene and p38 MAPK protein were significantly increased in patients with severe acute pancreatitis,which showed that p38 MAPK played an important role in inflammation reaction.
2.Clinical trials of targeted therapy in the treatment of RAI failure or advanced DTC
Haifeng SUN ; Yahuan GUO ; Zizhang WANG ; Fengsheng LI
Journal of Chinese Physician 2017;19(4):629-633
Regarding radioactive iodine-refractory failure or advanced differentiated thyroid cancer,multiple multikinase inhibitors including sorafenib and lenvatinib,which target platelet derived growth factor receptor,vascular endothelial growth factor pathway,and rearranged during transfection (RET) pathway were proved to have obvious antitumor activity.Moreover,selective BRAF inhibitor,promoting drug uptake of radioactive iodine also showed a certain therapeutic effect.These molecular targets which are relevant with differentiated thyroid cancer occurrence,development,invasion and metastasis have become of its moment,and,selective inhibitors and re-differentiation agents were shown to be promising.In the future,individual genetic testing would provide more specific information in directing individualized molecular-targeted therapy.
3.Meta-analysis of relationship between PTGER4 genetic polymorphisms and in-flammatory bowel disease
Zheng GUO ; Chungui YANG ; Tao SUN ; Lixing MA ; Haifeng HUO
Chinese Journal of Immunology 2017;33(3):407-413,417
Objective:To systematically review the relationship between PTGER 4 genetic polymorphisms and the risk of inflam-matory bowel disease (IBD).Methods:All eligible case-control studies which published up to February 29,2016 were searched by PubMed,Embase,Web of Science.The studies in accordance with high quality were included in this study .We synthesized pooled odds ratio ( OR) and its 95%confidence interval ( CI) using STATA12.0.The sensitivity analysis was used to determine the stability of re-sults in meta-analysis.The Egger′s analysis was performed to evaluate the publication bias .Results:Twenty original publications invol-ving 44 case-control studies were included in this study ,in which 25179 patients with Crohn′s disease (CD),5261 patients with ulcer-ative colitis ( UC) and 44652 control subjects were detected .The allelic frequency ,additive model ,dominant model and recessive mod-el were used to analyze the association of rs 4613763 T/C polymorphism and CD ,and the pooled OR and 95%CI were as followings:1.24 (1.06-1.45),1.32 (1.06-1.64),1.25 (1.06-1.48),1.28 (1.03-1.59).For rs17234657T/G polymorphism and CD,the pooled OR (95%CI) of four genetic models were 1.35 (1.28-1.47),2.12 (1.70-2.63),1.46 (1.36-1.57) and 1.90 (1.54-2.35),re-spectively.For rs4495224A/C polymorphism and CD,the pooled OR(95%CI) were 1.05 (0.79-1.41),1.08 (0.62-1.88),1.12 (0.75-1.65) and 1.00 (0.67-1.49).And the pooled OR (95%CI) were 0.77 (0.67-0.88),0.59 (0.51-0.69),0.73 (0.61-0.87),0.68 (0.59-0.79) for rs9292777G/T polymorphism and CD.For rs1373692T/G polymorphism and CD,the pooled OR (95%CI) were 1.23 (0.96-1.57),1.39 (0.74-2.59),1.26 (0.74-2.13),1.31 (1.00-1.72).The pooled OR (95%CI) of allelic fre-quency , additive model , dominant model and recessive model for the association of rs 4613763 T/C polymorphism with UC were 1.30 (1.17-1.44 ), 1.73 ( 1.16-2.59 ), 1.32 ( 1.17-1.48 ), 1.64 ( 1.10-2.45 ), respectively.Conclusion: Polymorphisms of rs17234657T/G,rs4613763T/C and rs9292777G/T are associated with CD.Polymorphism of rs4613763T/C is associated with UC sus-ceptibility.
4.Influence of crystal powder on mechanical properties of epoxy resin
Wenjue HAN ; Chunlian LUO ; Mingxing GUO ; Haifeng WANG
Chinese Journal of Tissue Engineering Research 2008;12(27):5357-5359
Crystal power/epoxy resin composite was made with refined crystal power as filling material in different composition. The shearing strength and coefficient of thermal expansion of the crystal powder/epoxy resin composite was studied. The sectional morphology was observed under a scanning electron microscope. The results of the study indicate that the shearing strength of crystal powder/epoxy resin composite is improved while the coefficient of thermal expansion decreases with increase of the amount of crystal powder, and a well-proportioned three-dimensional structure is obtained. The augmentation of shearing strength exhibits no linear relationship to the amount of crystal powder, and there is an optimal amount for crystal powder filling. The coefficient of thermal expansion is decreased with increase of crystal powder filling, and three-dimensional structure optimization exhibits the' similar inflexion.
5.The relationship between the expressions of HuR and COX-2 in epithelial ovarian carcinoma
Yuming QI ; Haifeng CHENG ; Hao GUO ; Bin SHI
Clinical Medicine of China 2011;27(4):353-358
Objective To detect the expressions of HuR and COX-2 in epithelial ovarian carcinoma,and investigate the correlation of HuR and COX-2 expression. In addition, we attempt to seek the pathway to prevent the occurrence and development of epithelial ovarian cancer by combined analysis of various clinicopathologic characteristics. Methods The expressions of HuR and COX-2 in 68 epithelial ovarian carcinoma, 10 borderline ovarian tumors and 5 normal ovarian tissues were examined by S-P immunohistochemical method. The relationship of HuR and COX-2 expressions with clinicopathologic parameterwere evaluated by correlation analysis. Results(1) The expression of HuR in epithelial ovarian cancer tissue (76. 47% ,52/68) was significantly higher than that in borderline epithelial ovarian tumor tissues (30. 00% ,3/10) and normal ovarian tissues (0, x2 = 18. 873, Ps < 0. 05), but there were no significant differences betweenthe expressions of HuR in borderline epithelial ovarian tumor and normal ovarian tissue(P > 0. 05).(2) The positive expression rate of cytoplasmic HuR in epithelial ovarian carcinoma and borderline epithelial ovarian tumor were 45.60% (31/68) and 10. 00% (1/10) respectively,but normal ovarian tissues showed no staining of HuR. We found no significant differences between the expression of cytoplasmic HuR in epithelial ovarian carcinoma and borderline epithelial ovarian tumor or normal ovarian tissue(x2 = 7. 999 ,P =0. 018).(3) The positive expression rate of cytoplasmic HuR in epithelial ovarian carcinoma of FIGO stage Ⅲ - Ⅳ was significantly higher than that of stage Ⅰ - Ⅱ(56. 09% vs. 29. 63%, x2 = 4. 598, P = 0. 032). The positive expression rates of cytoplasmic HuR in epithelial ovarian carcinoma of histological grade 1,2,3 were 10. 00%,46. 67% ,57. 14% respectively, which showed significant difference in the comparison among the three groups (x2 =6. 627 ,P =0. 036). (4) The positive expression rates of COX-2 in epithelial ovarian cancer (67. 64%)and borderline epithelial ovarian tumor tissues (60. 00%) were significantly higher than that in normal ovarian tissues (0, Ps < 0. 05), but we found no significant difference in the comparison between the expression of malignant and borderline ovarian tumors. Statistical analysis showed that the positive expression rate of COX-2 in epithelial ovarian carcinoma was correlated with FIGO stage and lymph node metastasis. (5)There was a significantly positive correlation between cytoplasmic HuR and COX-2 expressions in epithelial ovarian carcinoma. Conclusion The expressions of HuR and COX-2 increased in the epithelial ovarian carcinoma, and the cytoplasmic expression of HuR was significantly correlated with the expression of COX-2. These results suggested that increased cytoplasmic expression of HuR and COX-2 expression might play important roles in the initiation and development of epithelial ovarian carcinoma.
6.Influence of return to work on quality of life of patients after liver or kidney transplantation
Haifeng RU ; Lixia GUO ; Qian LIU ; Jingui SU
Chinese Journal of Practical Nursing 2009;25(7):8-10
Objective To research and analyze about the quality of life of patients after liver or kid-ney transplantation and return to work aiming at understanding the influence of return to work on their quality of life. Methods The general condition questionnaire and the generic quality of life inventory- 74 (GQOLI-74) were used to survey the quality of life of 30 patients who returned to work after liver or kidney transplantation (the experimental group), the results were compared with 30 cases of the same kinds who did not return to work (the control group). The influence of return to work after liver or kidney transplanta-tion on quality of life was analyzed. Results The total score of quality of life,the score of every dimension and factor were higher in the experimental group than those in the control group. Conclusions Return to work contributes to improvement of quality of life for patients after liver or kidney transplantation.
7.The effect of mustard seed on azoxymethane-induced colorectal tumor in mice
Haifeng YUAN ; Wen GUO ; Minggu ZHU ; Chudi CHEN
China Oncology 2010;20(3):178-181
Background and purpose:Colorectal cancer is one of the most common cancers worldwide as well as a prevalent cause of morbidity and mortality in China.Mustard seed and its components have been reported to possess anticancer properties.The purpose of this study was to investigate the effect of a diet mixed with mustard seeds (MS)on the prevention of colorectal tumorigenesis in Kunming mice induced with azoxymethane.Methods:Sixweek-old female Kunming species mice of were randomly divided into 4 different groups:AOM alone,AOM+5%MS,AOM+10%MS,and the untreated control group.Colorectal tumorigenesis was subcutaneously induced by injecting 10 mg/kg of AOM once a week,for 3 weeks.Different doses of MS were administered in the diet during this study.Thirtytwo weeks after initiation,the mice were put down through cervical dislocation.The colon and recta of the mice were isolated and flushed with nonnal but ice-cold saline.The site,size,and number of colorectal tumors were recorded.The incidence of colorectal tumor in each group was determined.Results:No tumors were found in the control group.Compared to AOM-treated control group(86.7%),the occurrence of colorectal tumors was reduced to 60.0%when administered with a 5%diet of mustard seeds and to 41.7%(P<0.05)with a diet of 10%mustard seeds.Tumor burden (tumors/mouse)was 2.2±1.2 in the AOM-treated control group whereas it was reduced to 1.1±1.1(P<0.05)in the 5%diet of mustard seeds and 0.7±0.9(P<0.05)in the 10%diet of mustard seeds.Conelusion:The results indicate that a diet of mustard seeds is able to inhibit the development of colorectal cancer in mice induced by AOM,suggesting possible future application of MS as a chemopreventive agent for colorectal cancer.
8.Gambogic acid induces the apoptosis and autophagic cell death in human hepatoma cells
Xiushan DONG ; Xifeng FU ; Qinping GUO ; Tao LIU ; Haifeng LIU
Cancer Research and Clinic 2016;28(12):793-796
Objective To study the effect of gambogic acid on apoptosis and autophagy in human hepatoma cells HepG2, and to detect its possible mechanism. Methods After exposure of HepG2 cells to gambogic acid at different concentration for 24 h, cell proliferation rates was determined by MTT assay, apoptosis rate was detected by the flow cytometry (FCM), formation of autophagic vacuoles was observed by the monodansyl cadaverine (MDC) fluorescence staining, expression level of apoptosis-related proteins Bax, bcl-2 and autophagy related protein Beclin 1 was detected by Western blot. Results HepG2 cell growth was inhibited by the gambogic acid dose dependence. After exposure to gambogic acid at 0, 2.0, 4.0 and 8.0 μmol/L for 24 h, cell apoptosis rate was significantly increased to 5.31 %, 29.18 %, 31.50 % and 46.09 %(P <0.05), MDC average fluorescence intensity was also significantly increased to 6.3 ±1.1, 82.6 ±4.5, 132.9±15.7 and 157.7±9.0 (P<0.01). Western blot showed that gambogic acid could promote the expression of apoptosis protein Bax (0.17 ±0.02, 0.75 ±0.06, 0.78 ±0.05, 0.89 ±0.10, P <0.05), and decrease the expression of anti-apoptosis protein bcl-2 (1.18 ±0.04, 0.90 ±0.06, 0.64 ±0.08, 0.57 ±0.05, P <0.05), meanwhile, it could also increase the expression of autophagy related protein Beclin (0.67±0.03, 0.92±0.04, 0.95±0.07, 1.04±0.06, P<0.05). Conclusion Gambogic acid can inhibit the growth of human hepatoma HepG2 cells by inducing apoptosis and autophagic cell death.
9.Reproductive toxicity study of rhubarb extract on early pregnancy mice and its preliminary mechanism
Haifeng WANG ; Bing GUO ; Xuping MA ; Ruichen XUE
Chinese Journal of Immunology 2016;(2):184-188
Objective:To explore the abortion effect and mechanism induced by Chinese herbal medicine rhubarb extract.Methods:The pregnant mice at day 3 of gestation were Drenched by Aqueous extract of rhubarb at different doses (7,5,2.5 g/kg)once per day for five days,and mices in control group were oral administration of same volume of saline.All mices at 12 day of gestation were sacrificed.estradiol and progesterone levels in serum were detected by Radioimmunoassay;Content of IFN-γ, IL-2 and TNF-αin uterine lysates were measured by ELISA, macrophages in endometrium were determined by immunohistochemical method, mast cells in endometrium were tested by Toluidine blue staining, respectively.Results: showed as follows:With increasing dose of rhubarb extract,abortion rate and resorption rate were gradually increased and was 100%abortion in 7g/kg treatment groups.Estrogen and progesterone content showed a downward trend,IFN-γ,IL-2 and TNF-αin uterine lysates and the numbers of macrophages and mast cells were significantly higher in mices Drenched by Aqueous extract of rhubarb than in the control.Conclusion: These results show that rhubarb extract not only interfere stability of pregnancy state in pregnant mices because of its diarrhea,but also can directly affect endometrial environment in early embryonic mice,Resulting in abortion.
10.Phenotypic genetic regulation and treatment of malignant lymphoma.
Shanqi GUO ; Haifeng ZHAO ; Yizhuo ZHANG
Chinese Journal of Oncology 2014;36(3):161-164
Antineoplastic Agents
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therapeutic use
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Enhancer of Zeste Homolog 2 Protein
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Epigenesis, Genetic
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Histone Deacetylase Inhibitors
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therapeutic use
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Humans
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Hydroxamic Acids
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therapeutic use
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Indoles
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therapeutic use
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Lymphoma
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classification
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drug therapy
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genetics
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metabolism
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MicroRNAs
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metabolism
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Phenotype
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Polycomb Repressive Complex 2
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metabolism
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Polycomb-Group Proteins
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metabolism