Objective To study the effects of 3,5-diiodotyrosine (DIT) and potassium iodide (KI) on myocardial ATPase activity in hyperthyroidism Wistar rats induced by thyroid tablets.Methods Seventy-two Wistar rats were divided into 8 groups according to body weight by the random number table method (9 rats in each group),respectively,which were control group,hyperthyroidism model group,low,medium and high doses groups (both DIT and KI contents were 25.0,166.7,500.1 μg/kg).Physiological saline was intragastrically administrated to the control group;the hyperthyroidism model group was given thyroid tablet suspension (200.0 mg/kg);DIT and KI groups were given thyroid tablet suspension with corresponding doses of iodine simultaneously.The medicine was given once a day for a mouth,all the rats were sacrificed and heart tissue was collected.The colorimetric method was used to examine the activity of ATPases (Na+-K+-ATPase,Mg2+-ATPase,Ca2+-ATPase).Results The activities of Na+-K+-ATPase,Mg2+-ATPase,Ca2+-ATPase were significantly different statistically between groups (F =2.99,3.03,6.18,all P ＜ 0.01).Compared with the control group [(4.01 ± 0.22),(4.28 ± 0.28),(4.46 ± 0.35) μmol/mg·h],the activities of ATPases (Na+-K+-ATPase,Mg2+-ATPase,Ca2+-ATPase included) were reduced significantly in hyperthyroidism model group [(3.60 ± 0.25),(3.42 ± 0.31),(3.85 ± 0.17)μ mol/mg·h,all P ＜ 0.01];the activities of Mg2+-ATPase in DIT medium dose group [(3.89 ± 0.35)μmol/mg ·h],Ca2+-ATPase in DIT medium and high doses groups [(4.12 ± 0.20),(4.09 ± 0.21)μ mol/mg·h] were reduced significantly (all P ＜ 0.05);the activities of Na+-K+-ATPases,Ca2+-ATPase were decreased significantly in three KI groups [(3.64 ± 0.32),(3.60 ± 0.32),(3.53 ± 0.33),(3.93 ± 0.22),(3.90 ± 0.23),(3.85 ± 0.26)μmol/mg·h],Mg2+-ATPase in KI high dose group [(3.65 ± 0.49)μmol/mg·h] was decreased significantly (P ＜ 0.05or ＜ 0.01).Compared with the hyperthyroidism model group,the activities of ATPase were increased in most of the DIT groups [Mg2+-ATPase in low,medium doses groups:(4.06 ± 0.51),(3.89 ± 0.35)μmol/mg·h;Ca2+-ATPase in low,medium,high doses groups (4.15 ± 0.26),(4.12 ± 0.20),(4.09 ± 0.21)μmol/mg·h,all P ＜ 0.05].Conclusion Supplementation of thyroid tablets in the process of hyperthyroidism formation in Wistar rats will reduce myocardial damage by DTT compared with the same dose of KI.

Objective To investigate the effect of CXCL16 on the development of murine collageninduced arthritis (CIA). Methods CXCL16 mRNA of the involved synovium and serum CXCL16 protein were determined respectively by reverse transcription-polymerase chain reaction (RT-PCR) and enzyme linked immunosorbent assay (ELISA) in murine collagen-induced arthritis. The proliferation of lymphocytes from murine spleen and the level of RANKL mRNA, stimulated by CXCL16 at different concentrations (0,100, 200, 400, 800 ng/ml), was detected respectively by CCK-8 and RT-PCR, then the level of IL-2 and IFN-γ in culture supernatant was detected by ELISA. Comparisons between groups were tested by t test and one-way ANOVA analysis. Results The serum CXCL16 [(127± 10) vs (72±8) pg/ml, P＜0.05] and synovial CXCL16 mRNA (0.214±0.007 vs 0.375±0.009, P＜0.01) in CIA were all significantly higher than those in normal controls. The proliferation of CXCL16 (200, 400, 800 ng/ml) in CIA mouse lymphocytes, was significantly higher than that of CXCL16 (0 ng/ml) (0.51±0.06, 0.56±0.05, 0.55±0.04, (0.41±0.04, P＜0.05). And CXCL16 on the CIA stimulated lymphocyte proliferation was significantly higher than controls on normal lymphocytes (P＜0.05). Compared with blank control group, the expression of IL-2, IFN-γ and RANKL mRNA of CIA CXCL16 (400, 800 ng/ml) groups was higher significantly (P＜0.01). Conclusion CXCL16 plays an important role in the development of murine CIA by activating lymphocytes.

Objective To study the expression of MCM5 gene in urine exfoliate cell and bladder cancer tissue in order to research the diagnosis and difference. Methods We collected the samples of urine exfoliate cell and bladder cancer tissue and extracted the total RNA, and then did RT-nest-PCR, immunohistology to check the expressive level of mcm5 gene. Results Sensitivities of that are 93。3% in 30 bladder cancer, 13。3% in other patients and 0% in normal person. The expression of mcm5 between G1?G2 and G3 bladder cancer tissue have very marked statistic significance ( P

Objective To establish a method of semiquantitative polymerase chain reaction for detecting cdc6 gene in EJ cells and bladder cancer tissue.Methods We collected the samples of urine EJ bladder cancer cells and extracted the total RNA, and then did RT-nest-PCR to check the expressive level of cdc6 gene. Result We established stable semiquantitative PCR by putting primer of beta-actin served as internal reference gene and primer of target gene in the same test tube and optimizing experiment parameters for PCR, such as the concentration of magnesium and cycle times etc. The intro and inter group CV were 8.01 and 14.53 respectively for cdc6. The detecting limit was 5?10 -2 ng.Conclusion It is usable to test the expressive level of cdc6 gene in bladder cancer.

Objective This study was designed to establish and optimize the two-dimensional gel electrophoresis (2-DE) for the proteome analysis of human Transitional Cell Carcinomas of the Urinary Bladder ,and to established the two-dimensional gel electrophoresis (2-DE) profile of human Transitional Cell Carcinomas of the Urinary Bladder(TCC) of different stages in carcinogenic process. The basic aim is to perform differential analysis and provide a basis for identifying carcinogenesis-associated protein of TCC.Methods After obtaining samples of the normal,invasive tissue,noninvasive tissue,a series of methods Such as sample preparation,electrophoresis parameters,gel concentration,PDQuest 2DE analysis software,peptide mass fingerprint (PMF,MALDI-TOF-MS)were used to analyses these tissues.Results The good 2DE patterns of different tissues including resolution and reproducibility were obtained. After coomassie Brilliant Blue R-250 staining, the average matching ratio was 76%.There was a good reproducibility of spot position in 2-DE map, with average deviation in IEF direction of (0.98?0.26) mm, while in SDS-PAGE direction it was(1.23?0.22) mm. The 2-DE patterns with good quality had been obtained. Ten protein spots chosen randomly from different stages were identified by PMF, some of which were involved in the cell proliferation, differentiation, cycle regulation, and tumor occurrence, such as Heat shock protein-27,SFN etc.Conclusions The results provide a fundamental basis for further study of mechanism of human Transitional Cell Carcinomas of the Urinary Bladder and screening its specific marker.

Objective To discuss the effects of implants of different thread face angles on the primary stability of immediately loaded implant using the 3-dimensional finite element analysis with the models of the immediately loaded implants. Methods Using the commercial code of Pro/E software, Hypermesh software, and ABAQUS software we created 3-dimensional finite element models. The micromotions of the finite element models with different screw face angles (V-shape, buttress, square-shape and inverse buttress) were computed with the ABAQUS software. Results Concerning different thread face angles, the micromotion of buttress implant was the minimum and the micromotion of inverse buttress implant was the maximum with vertically loading; the micromotion of inverse buttress implant was the minimum and the micromotion of buttress implant was the maximum with horizontal loading. Conclusions Different screw-types have great influence on vertical interfacial micromotions but little influence on horizontal interfacial micromotions. There are two angles which are formed by top /bottom edge and the implants. The larger are the angles, the smaller are the vertical interfacial micromotions, but the weaker of the strength. Thus in designing the screw-type implants, we should consider the angles of thread faces and the strength.

Objective To investigate the roles of phosphatidylinositol 3 kinase (PI3K) and phosphorylated Akt (P-Akt) in the pathogenesis of cervical squamous cell carcinoma and condyloma acuminatum.Methods Immunohistochemistry and Western blot were used to detect the expressions of PI3K and P-Akt in tissue specimens from the lesions of 30 cases of cervical squamous cell carcinoma,30 cases of condyloma acuminatum and the prepuce of 15 normal human controls.The average optical density and gray scale values were calculated and analyzed by t test and F test respectively.Results The expressions of PI3K and P-Akt were observed in only the basal layer of the epidermis of control specimens,but in the whole epidermis of condyloma acuminatum tissue specimens.Cervical squamous cell carcinoma tissue specimens displayed a stronger expression of PI3K and P-Akt compared with the control and condyloma acuminatum tissue specimens.As immunohistochemistry revealed,the average absorbance value for PI3K and P-Akt was 0.28 ±0.05 and 0.20 ± 0.07 respectively in cervical squamous cell carcinoma tissue specimens,0.22 ± 0.04 and 0.17 ± 0.03 respectively in condyloma acuminatum tissue specimens,and 0.16 ± 0.04 and 0.10 ± 0.02 respectively in the control tissue specimens; significant differences were observed in the expressions of PI3K and P-Akt among the three groups of tissue specimens (F =44.87,20.64,respectively,both P ＜ 0.01 ).The results of Western blot were consistent with those of immunohistochemistry,and there was a significant difference in the gray scale value for PI3K and P-Akt between cervical squamous cell carcinoma,condyloma acuminatum and control tissue specimens (3.48 ± 0.48 vs.1.99 ± 0.11 vs.1.00 ± 0.03,F=354.83,P＜ 0.01; 3.33 ± 0.26 vs.1.96 ± 0.11 vs.1.00 ± 0.03,F=302.33,P＜ 0.01 ).Conclusions The PI3K/Akt signaling pathway is abnormally activated in condyloma acuminatum and cervical squamous cell carcinoma,and human papilloma virus may cause the abnormal proliferation of infected epithelium likely by affecting the upregnlated expression of PI3K/P-Akt.

China ; Humans ; Logistic Models ; Non-alcoholic Fatty Liver Disease ; Risk Factors

Purpose To study the malignant transformation after treating rat oval cell line ( WB-F344 ) with chemical carcinogen N-methyl-N′-nitro-N-nitrosoguanidine ( MNNG) . Methods WB-F344 cells were cultured with MNNG for severe times. The biological characteristics of induced cells were detected through the following methods:to check proliferation activity by flow cytometry analysis, to examine malignant transformation degree of induced cells by soft agar assay and tumor formation in NOD/SCID mice, and to investi-gate the transcriptional and protein levels of hepatocellular carcinoma marker GGT, GST-P by real time-PCR. Results Oval cells in-duced by MNNG showed changes in biological characteristics and malignant molecular markers. Conclusion Hepatic oval cells model is successfully established, which can be confirmed by tumor formation in NOD/SCID mice.

Objective To observe the in vitro influence of recombinant human B7-H4 protein on the cell proliferation cycle, apoptosis and cytokine secretion of peripheral blood activated T lymphocytes in cervical cancer patients.Methods After 48 h co-culture of peripheral blood T lymphocytes in 1 5 cases of cervical cancer with B7-H4 48 h,T lymphocytes′cell proliferation cycle, apoptosis and T lymphocytes subtypes changes were detected by FCM;the cytokines concentration in the culture supernatant was tested by ELISA array.Results After 48 h co-culture of peripheral blood T lymphocytes with B7-H4 48hs,G1,G2 and S phase of T cells accounted for 90.59%,8.55% and 0.87% respectively,which of the blank group were 92.83%,6.09% and 1.13% respec-tively;the Ki67 positive rates of CD4 + T and CD8 + T cells in the B7-H4 group were 2.13%±0.13% and 1.03%±1.33% respec-tively,which of the blank group were 2.74% ±0.98% and 1.71% ± 1.32% respectively;the proportion of CD4 + T and CD8 + T cells accounting for T cells in the B7-H4 group was decreased compared with the blank group,but the ratio of CD4 + T/CD8 + T and the proportion of CD4 + CD25 + Foxp3 + T cells were increased,in addition,the TGF-β1 secretion;concentration in the co-culture su-pernatant in the B7-H4 group was (259.25±32.78)pg/mL,which was higher than (202.75 ±20.1 7)pg/mL in the blank group. B7-H4 had no significant influence on the peripheral blood activated T cells apoptosis.Conclusion B7-H4 block the peripheral blood activated T cells at G2 phase,the S phase cells are obviously decreased;B7-H4 inhibits the cellular proliferation of CD4 + T and CD8 + cells,but may have the promoting effect on Foxp3 + T proliferation and TGF-β1 secretion;B7-H4 has no significant influ-ence on T cell apoptosis.B7-H4 plays a role in depressing anti-tumor T cell immune response of cervical cancer and may become a potential target of cervical cancer immunotherapy.