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 conduct a comparative study on postoperative complications and patients′quali-ty of life between tension-free inguinal hernia repair with mesh plug(Rutkow operation)and tension-free repair of preperitoneal space with middle incision of lower abdomen(Open TEP operation).Methods A retrospective anal-ysis of 122 cases of inguinal hernia was conducted.And 62 cases of Open TEP operation were concluded into obser-vation group and 60 cases of Rutkow operationinto control group. The basic information of the surgery,postopera-tive complications and the score of quality of life before and after treatment were compared between 2 groups. Results No bladder injury,ductus deferens damage,infections or hematoma on incisions were found after opera-tion and no relapse,patch rejection,infections or atrophia testiculi were seen during the follow-up. The incision pain of observation group lasted shorter than that of control group(P<0.01),while other operational indexes show no great difference(P > 0.05). The incidence of postoperative complications of observation group was 11.29%, much lower than that of control group(P<0.01).Both PCS and MCS scores of 2 groups after treatment increased obviously as compared with those before treatment(P<0.01),but the rise in observation group were more signifi-cant(P<0.01).Conclusion Less postoperative pain and complications,and better life quality are found in the treatment of inguinal hernia with open TEP operation outperforms Rutkow operation.

Objective:To investigate the effect of coix seed oil on chemosensitivity of colon cancer cells.Methods:HT29 cell line was cultured in vitro. Different concentrations of coix seed oil (1, 2, 4, 8 mg/ml) and 30 μg/ml 5-fluorouracil (5-FU) were incubated with HT29 cells for 24 hours to simulate chemotherapy. The cell proliferation inhibition rate, apoptosis rate and cell cycle ratio were measured by methyl thiazolyl tetrazolium (MTT) method and flow cytometry, and the protein expression of cleaved caspase-3 was measured by Western blot. Results:The inhibition rate of cell proliferation in 1, 2, 4, 8 mg/ml coix oil + 5-FU group was significantly higher than that in 5-FU group and coix oil group, and the inhibition rate in 2, 4, 8 mg/ml coix oil + 5-FU group was significantly higher than that in 1 mg/ml coix oil + 5-FU group ( P<0.05). The apoptosis rate in 5-FU group, coix oil group and 1, 2, 4, 8 mg/ml coix oil + 5-FU group was higher than that in the blank control group ( P<0.05). The apoptosis rate in 1, 2, 4, 8 mg/ml coix oil + 5-FU group was significantly higher than that in 5-FU group and coix oil group ( P<0.05). The apoptosis rate of 2, 4, 8 mg/ml coix oil + 5-FU group was significantly higher than that of 1 mg/ml coix oil + 5-FU group ( P<0.05). The expression of cleaved caspase-3 in each group was basically in line with the apoptosis rate of flow cytometry. The percentage of G1/M phase cells in 5-FU group, coix oil group and 1, 2, 4, 8 mg/ml coix oil + 5-FU group was significantly higher than that in the blank control, and the percentage of S phase cells was lower comparing with blank control ( P<0.05). Besides, the percentage of G1/M phase cells in 1, 2, 4, 8 mg/ml coix oil + 5-FU group was significantly higher than that in 5-FU group and coix oil group, and the percentage of S phase cells was significantly lower than that in 5-FU group and coix oil group ( P<0.05). The percentage of G1/M phase cells in 2, 4, 8 mg/ml coix oil + 5-FU group was significantly higher than that in 1 mg/ml coix oil + 5-FU group, and the percentage of S phase cells was significantly lower than that in 1 mg/ml coix oil + 5-FU group ( P<0.05). Conclusions:Coix seed oil may enhance the chemosensitivity of colon cancer cells by inducing cell cycle arrest and apoptosis.

Objective To investigate the clinical effect of mesh plug tension-free hernia repair on inguinal hernia and its impact on microenvironment related indicators in patients.Methods A total of 128 cases of patients with inguinal hernia admitted in our hospital were divided into control group and observation group with 64 cases in each group.The control group was treated with traditional hernioplasty,while the observation group mesh plug ten-sion-free hernia repair.The clinical effect and microenvironment related indicators 1d after the operation were com-pared between the two groups. Results Compared with the control group,the observation group had less blood loss during the surgery,and shorter time for recovery of out-of-bed ambulation and hospitalization(P<0.01),but no significant difference was found regarding surgery hours(P > 0.05). The VAS scores of the observation group were significantly lower than those of the control group at the same time points 1 and 3 days after operation(P <0.01). Compared with those of control group 1 day after operation,the serum beta-endorphin(β-EP)of observa-tion group was significantly reduced,but total antioxidant capacity(T-AOC),growth hormone(GH),insulin (InS)level increased significantly(P<0.01).Serum matrix metalloproteinases-9(MMP-2 and MMP-9)and tis-sue inhibitor of matrix metalloproteinases(TIMP-1 and TIMP-2)were significantly reduced(P<0.01).Acute uri-nary retention,scrotal effusion,the incidence of postoperative pain and postoperative recurrence rate of observa-tion group were significantly reduced when compared with those of control group(P < 0.01);there was no differ-ence of incidence of low thermal between the two groups(P>0.05).Conclusion Mesh plug tension-free hernia repair has a significant clinical effect on inguinal hernia with less complications,lower recurrence rate and lighter impact on microenvironment related indicators.