Objective:To explore the effects of survivin antisense RNA on apoptosis in pancreatic cancer cell Panc-1.Methods:survivin antisense RNA was transferred into pancreatic cancer cell Panc-1 by lipofection.The opposite livability on Panc-1 cell line were assayed with MTT test.Expression of survivin detected by RT-PCR.Apoptosis was detected by DNA gel electrophoresis.Results:survivin antisense RNA obviously inhibited the Panc-1 cell growth(P

BACKGROUND:Pelvis is the most complicated structure of human body, and many scholars have devoted themselves to its biomechanical study. However, it is difficult to construct the pelvic finite element model containing main muscles and ligaments, as a result of its irregular shape and complicated structure.
OBJECTIVE:To establish a normal human pelvis three-dimensional finite element model and provide digital model for the subsequent biomechanics analysis of pelvis.
METHODPelvic CT images of healthy male volunteers were stored in DICOM format and then put into Mimics 10.01 software for three-dimensional medical image reconstruction. The files were imported into reverse engineering software Geomagic studio 11 for surface processing and establishing surface model;then the surface model was introduced into finite element analysis software Ansys 14.0 for finite element meshing.
RESULTS AND CONCLUSION:A normal adult pelvis three-dimensional finite element model was developed, including 818 294 units and 149 290 nodes. Based on the CT images, we established pelvic finite element model, which have good accuracy, anatomical and geometric similarity, and could provide the basis for subsequent biomechanics analysis of pelvis.

Background and purpose:The most serious aspect of cancer is the emergence of metastases in organs distant from the primary tumor, since most deaths from cancer are due to metastases. In recent years, a series of studies has been undertaken both in vitro and in vivo, and demonstrated that the CD133+ hematopoietic stem cell is effective in increasing mice tumor cell metastases, but the efficacy of CD133+ stem cells is not well studied for human cancer.We investigated the effects of CD133+ stem cells on the proliferation, adhesion and migration in human colorectal neoplasm cell line SW480.Methods:CD133+ cells were separated from fresh cord blood mononuclear cells(MNC) by Ficoll density gradient centrifugation and magnetic activated cell-sorting system(MACS).The treatment group was the co-culture of CD133+ cells and SW480, the control group used the same culture medium without CD133+ cells. The effect of CD133+ cells on proliferation in SW480 cell was measured by MTT assay, the migration abilities of SW480 cell were assayed in Transwell cell culture, Cell adhesion assay was carried out in a 96 microplate well precoated with fibronection.Results:CD133+ cells could significantly improve the growth ability of SW480 cell, not only the ability of proliferation, but also the morphology. The morphology of the cells was remarkably changed. Irregular nucleus, double nucleus and polymorphic nucleus appeared in the treatment group, and the cells were shaped as polygon-like and leptosomatic. In the cell adhesion assay, A 490 of the treatment group was 0.11?0.01, A 490 of the control group was 0.05?0.01(P﹤0.05).Conclusions:Our results indicate that the CD133+ cell is effective in increasing tumor cell proliferation and invasion. Hematopoietic stem cell may play an important role in the invasion and metastasis of colorectal neoplasm.

Objective To investigate the effect of erythropoietin on the proliferation,differentiation,and apoptosis of the cultured neonatal porcine islet cells in vitro.Methods Neonatal porcine islet cells were separated and pured from neonatal pigs with collagenase digestion and tissue culture,and their viability and purity were tested. The neonatal porcine islet cells were divided into a control group and an experimental group.The experimental group was treated with erythropoietin but not the control group,and the insulin secretion responsiveness induced by low and high glucose stimulation in the islet was tested after 5 days. Cells were counted and the activation of amplification was determined by MTT chromatometry. The rates of cell apoptosis were observed by ethidium bromide/acridine orange (EB/AO) of fluorescent light staining and flow cytometry,and the cell cycle was analyzed by flow cytometry. The expression of bcl-2,bax,caspase-3,glucose transporter 2 (GlUT-2),and pancreatic duodenal homeobox-1 (PDX-1) mRNA was tested by RT-PCR.Results After erythropoietin was treated in the cell culture,the neonatal porcine islet cells had normal morphology,function,and reaction of insulin secretion to the glucose stimulation. Cell count showed more cells in the experimental group than in the control group (P＜0.05). MTT chromatometry showed the optical absorbance tended to increase with time,and compared with the control group,the optical absorbance was higher in the experimental group (P＜0.05),the expression of PDX-1 mRNA was slightly up-regulated (P＜0.05). The expression of GLUT-2 mRNA had no difference in the 2 groups (P=0.34). In the experimental group,the apoptisis rate was lower than that in the control group by flow cytometry and EB/AO fluoscence staining (P＜0.01),and the expression of bcl-2 mRNA was higher. Howerer bax mRNA and caspase-3 mRNA were obviously lower than those in the control group (P＜0.01).Conclusion Erythropoietin can promote the proliferation but has no effect on the function of neonatal porcine islet cells in vitro. Erythropoietin can protect neonatal porcine islet cells from apoptosis through up-regulating bcl-2 mRNA and downreguling bax and caspase-3 mRNA.

Objective To investigate the effects of Danzhi Jiangtang Capsule on CXCL9 and IL-8 in type 2 diabetic model rats, and discuss the mechanism in TCM intervention in type 2 diabetes. Methods Fifty male SD rats were randomly divided into 5 groups:normal control group, high-dosage group of Danzhi Jiangtang Capsule, low-dosage group of Danzhi Jiangtang Capsule, pioglitazone group and model group. Normal control group was fed with basal diet, while the other groups were fed with high fat diet. A single intraperitoneal injection of STZ of 35 mg/kg was employed to establish the animal model of diabetes mellitus. When the diabetic rodent model was built, high-dosage group of Danzhi Jiangtang Capsule and low-dosage group of Danzhi Jiangtang Capsule were treated with 1.08 g/(kg?d) and 0.54 g/(kg?d) by gavage, pioglitazone group was treated with 10 mg/(kg?d) by gavage, the blank group and the model group were treated with physiological saline 5 mL/(kg?d) by gavage for 8 weeks. CXCL9, IL-8 and blood glucose, and lipid in serum of rats were determined with double antibody sandwich method. Results Expressions of CXCL9 and IL-8 in model group increased significantly, compared with the normal control group (P<0.05, P<0.01). Expressions of CXCL9 and IL-8 in high and low dosage Danzhi Jiangtang Capsule group significantly decreased, the blood glucose and lipid also decreased, compared with model group (P<0.01). Conclusion Danzhi Jiangtang Capsule has inhibitory effects on the high expression of inflammatory factors in diabetes, and can also lower bloodglucose, and regulate blood lipid.

OBJECTIVE:To study the effects of Thymalfasin for injection on the apoptosis of human lung cancer A549 cells. METHODS:After treated with 0(blank control),25,50,100,200 and 400 mg/L Thymalfasin for injection for 24,48 and 72 h, the cell proliferation inhibitory rate was analyzed with MTT and calculated. After treated with 0(blank control),50 and 100 mg/L Thymalfasin for injection for 48 h,cell apoptosis was detected by flow cytometry,and the expression of Caspase-3,Bcl-2 and Bax and the phosphorylation level of Akt were deteced by Western blot. RESULTS:Compared with blank control group,proliferation in-hibitory rate of A549 cells increased after treated with Thymalfasin for injection,in concentration and time-dependent manner(P<0.05). The apoptotic rate of A549 cells increased after treated with Thymalfasin for injection 50,100 mg/L for 48 h (P<0.05). The expression of Caspase-3 increased while the Bcl-2/Bax and phosphorylation level of Akt decreased in A549 cells after treated with Thymalfasin for injection 100 mg/L (P<0.05). CONCLUSIONS:Thymalfasin for injection can inhibit the proliferation of A549 cells by activating Caspase-3,decreasing Bcl-2/Bax ratio,inhibiting Akt signal pathway and induce the apoptosis of A549 cells.

Objective To examine the iron content and the expression of hepcidin in early period after subarach-noid hemorrhage (SAH) in rats, and to explore the role of hepcidin in dysregulation of brain iron metabolism after SAH. Methods Totally 90 adult male SD rats were randomly divided into two groups:the sham-operation group and SAH group. The SAH model was established by single blood injection to prechiasmatic cistern. Immunohistochemical and Western Blotting were used to examine the expression of hepcidin at 12, 24, 48 and 72h after SAH. Meanwhile, Atomic Absorption Spectrometer was used to detect the iron content. Results Immunochemistry showed that hepcidin expression in rats in SAH group began to rise at 12 h(0.30±0.06)and gradually increased over time until 72 h(0.56±0.07)compared with the sham group(0.19±0.05). The expression of hepcidin was significantly higher in SAH group than in the sham group(F=31.911, P<0.05). Western blot showed that hepcidin expression in rats in SAH group began to rise at 12h(0.481±0.065) and gradually increased over time until 72h(1.627±0.143)Compared with the sham group(0.238±0.047). The expression of hepcidin was significantly higher in SAH group than in the sham group after SAH(F=147.314,P<0.05). Iron content in SAH group began to rise at 12h after SAH(58.50±9.19)and gradually increased until 72 h(99.34±7.68). The iron con-tents in SAH group were higher at every time points than those in sham group(43.51±4.59)(F=28.799,P﹤0.05). The ex-pression of hepcidin was correlated with the iron content in SAH group(r=0.914,P﹤0.01). Conclusion The increase in iron content following SAH is associated with the increased hepcidin expression.

AIM: To investigate the effect of Shexiang Baoxin Pill(SXBXP) on endothelial in stable angina pectoris patients and its underlying mechanisms. METHODS: Sixty-eight stable angina pectoris patients were randomly divided into two groups,the conventional group(34cases),SXBXP treatment group(34cases).The conventional group was treated with standard treatment,and SXBXP group was treated with standard treatment and SXBXP.FMD,NO,ET,TXB_2,6-Keto-PGF-1a were determined before and after three months treatment. RESULTS: FMD,NO,6-Keto-PGF-1a of SXBXP group were (9.35%?0.78%)、(77.25?6.36)?mmol/L、(93.87?(10.28))?/(ng/L) after treatment,ET、TXB_2 were(81.15?5.43) pg/mL、(43.02?4.19)?/(ng/L).There were significant improvement as compared with in SXBXP group before treatment and in conventional group after treatment(P

To examine the histological changes of diabetic rats' skin and the effects on the percutaneous absorption of hydrocortisone (HC, a glucocorticoid), male Wistar rats were randomly divided into five groups: control group, diabetes one-week group (W1), two-week group (W2), three-week group (W3), and four-week group (W4), while each group contained 6 rats. Diabetes mellitus (DM) rat model was prepared with the method of streptozocin (STZ, 40 mg x kg(-1)) intraperitoneal injection. Abdominal skin was cut to carry out an in-vitro penetration experiment on an improved Franz diffusion cells, and phosphate buffer (PBS, pH 7.4) was used as receptor solution. The solution was analyzed with HPLC, and then the penetrating rate can be calculated. Meanwhile, rats' abdominal skins of different DM periods were HE stained and made into tissue slices to find if any histological changes occurred. The penetrating rate of control, W1, W2, W3, and W4 groups were 2.39 +/- 1.25, 3.22 +/- 1.72, 3.02 +/- 1.89, 3.63 +/- 2.02 and 5.00 +/- 3.36 microg x h(-1) x cm(-2), respectively. There was significant difference between the control and the W4 group (P < 0.05), but no significant differences were found between any other two groups (P > 0.05). The tissue slices showed that compared to the normal rats' skin, little change was observed in one-week DM rats' skin, but the skin of one-month DM rats' skin was observed thinner, and it became much thinner than that of rats with two-month diabetes, especially the epidermis. After making a rat into diabetic, the rats' skin goes through a pathological change, and this change is closely interrelated with the increase of the permeation of HC. Therefore, it is necessary to adjust the dose while some drug was applied on the skin in case of diabetes mellitus.

OBJECTIVE: To investigate the change in serum visfatin level after laparoscopic Roux-en-Y gastric bypass surgery in patients with Type 2 diabetes mellitus (T2DM) and to explore the relationship between visfatin insulin resistance and diabetes. METHODS: Thirty-three patients with Type 2 diabetes were studied before and after the gastric bypass surgery. The level of fasting serum visfatin was measured by enzyme-linked immunosorbent assay. Fasting plasma glucose (FPG), glycated hemoglobin (HbA1c) and fasting insulin (FINS) were measured before and after the gastric bypass surgery. RESULTS: Compared with before the operation, the indicators of HbA1c, FINS, and insulin resistance index (HOMA-IR) were decreased after the laparoscopic Roux-en-Y gastric bypass surgery. The body mass index (BMI) [(24.53 ± 0.62) kg/m² vs (26.71 ± 0.69) kg/m2] was decreased, with significant difference (P<0.001). The serum visfatin level [(9.79 ± 0.64) ng/mL] was significantly lower than before the operation [(38.24 ± 5.32) ng/mL], with significant difference (P<0.001). CONCLUSION Serum level of visfatin is decreased in T2DM patients who undergo gastric bypass surgry, reflecting an improvement in insulin resistance and diabetes.
Diabetes Mellitus, Type 2 ; blood ; surgery ; Female ; Gastric Bypass ; Humans ; Insulin Resistance ; Laparoscopy ; Male ; Middle Aged ; Nicotinamide Phosphoribosyltransferase ; blood ; Postoperative Period