There are 10％-25％ inherited breast cancer patients among all breast cancer patients.Hereditary factors play an important role in the occurrence and development of inherited breast cancer.There are three kinds of susceptibility genes of inherited breast cancer including high penetrance susceptibility genes,middle penetrance susceptibility genes and low penetrance susceptibility genes.Various susceptibility genes are closely related to inherited breast cancer.

BACKGROUND:For treatment of central nervous system diseases, neural stem cel s (NSCs) or bone marrow stromal stem cel s (BMSCs) can be transplanted into the brain, but there are less reports to compare the effects of two kinds of stem cel transplantation. OBJECTIVE:To explore the effect of midbrain NSCs and BMSCs on the behavior and brain morphology of rats with Parkinson’s disease. METHODS:Fifty-eight Sprague-Dawley rats were enrol ed to establish Parkinson’s disease models, and then randomly divided into three groups, which were treated with 5μL midbrain NSCs (n=20), 5μL BMSCs (n=20) and 5μL normal saline (n=18) via two coordinate points of the right striatum at 3 weeks after modeling, respectively. At 5 months after transplantation, the rats underwent intraperitoneal injection of apomorphine to observe behavioral changes, and then, the striatum was taken for immunohistochemistry staining. RESULTS AND CONCLUSION:The number of rotations was reduced significantly in the BMSCs and midbrain NSCs groups at 5 months after transplantation (P<0.05), which was significantly lower than that in the normal saline group (P<0.05). However, there was no significant difference between the BMSCs and NSCs groups (P>0.05). In the BMSCs group, BrdU/Nestin positive cel s were seen in the brain stratium at 1 week after transplantation;BrdU/GFAP and BrdU/NSE positive cel s as wel as TH positive cel s rather than BrdU/TH positive cel s were found in the brain stratium at 1 month after transplantation;after that, the number of BrdU/Nestin positive cel s was reduced gradual y and disappeared ultimately, but there were stil a certain number of BrdU/GFAP and BrdU/NSE positive cel s, especial y the former ones. Meanwhile, the NSCs group also had a similar situation, but no double-labeled cel s were in the normal saline group. These findings indicate that midbrain NSCs and BMSCs transplantation can both improve the behavior of Parkinson’s disease rats, and differentiate into neurons, astrocytes and dopaminergic neurons.

Insulin-like growth factor-Ⅰ can promote the breast cancer formation, development and metastasis. According to the characteristic of insulin-like growth factor pathway, the inhibition of insulin-like growth factor pathway signaling can inhibit the growth and metastasis of breast cancer, which is of great significance for breast cancer prevention and treatment.

12)is good after nonoperative treatment above 2 years.

Bone metastasis is a common complication in patients with malignant carcinoma. This process involves interactions between metastatic cancer cells and bone microenvironment. The two common pathological types are osteolytic and osteoblastic metastasis. Damage to the bone is closely associated with tumor growth.

High-efficiency exhalation disinfection device for the patient infected with SARS can also meet the disinfection requirements of the patients with severe respiratory communicable diseases. Connected with the exhaust vent of the breathing mask or the respirator by corrugated tubes, this device gathers exhalation containing a large amount of causative agents through the completely leakproof ductwork and then expels purified air after multiplicate disinfection by high temperature, high pressure and chemical disinfectant. The device can prevent the patient with severe respiratory communicable disease from polluting their surrounding air and thus cut off the route of transmission, reduce the infection rate and the death rate of the person and medical personnel who has made intimmate contact with the patient.

Objective Severe acute respiratory syndrome is recently emerged infectious disease caused by a novel coronavirus, but its immmunopathological mechanism has not yet been fully elucidated. Method We established the SARS animel model and investigated changes in plasma inflammatoy cytokines monkeys and rats. 8 monkeys with PCR and antibody positive were detected. Serum levels of inflammatory cytokines interleukin(IL)-6,IL-10,Th-1 cytokine,interferon(INF)-? and tumor necrosis factor(TNF)-? were measured by enzyme-linked immunosorbent assays(ELISA).Result The concentration of IL-10 and TNF-?were not significantly different in model and control group.IL-6 showed marked elevation of at least 10 days, and there was a positive relationship between the level of IL-6 and pulmonary pathological changes. The INF-? level decreased. Conclusion The result of sera level of SARS animal model avoid the disturbance of anti-viral drug and corticosteroid, it suggest that there are different immunoregulatory events during SARS and may contribute to our understanding of the pathogenesis.

Objective To evaluate the clinical methods and results of endoscopic-assisted catheterization in the treatment of bulbous urethral injury . Methods The clinical data of 19 cases of bulbous urethral injury from July 2004 to September 2012 managed by ureteroscopic catheterization were retrospectively analyzed . Results The procedures were successfully completed in all the 19 cases.Foley catheters were removed in 4-8 weeks after the surgery and all cases had unobstructed ureter after the removal of the catheter.Urethral dilatation was done regularly for 4 times and all the cases were followed up for 6-12 months afterwards.The follow-up showed urinary flow rate was more than 15 ml/s, and no urethral stricture , urinary incontinence or other complications occurred.Erection of penis was not obviously affected compared with preoperative condition . Conclusion Endoscopic-assisted catheterization is effective in the treatment of bulbous urethral injury .

BACKGROUND:As a new kind of adult stem cells, adipose-derived stem cells get more and more attention, because of rich source, drawing materials easily and powerful proliferation. OBJECTIVE:To isolate and culture adipose-derived stem cells from the epididymal adipose tissue in mice, and to identify their biological characteristics. METHODS:Adipose tissue was obtained from epididymis in mice by aseptical y cutting. The tissue was digested using col agenase. Adipose-derived stem cells were separated and purified by using one digestion, multiple col ection method and differential adhesion method. The morphology of adipose-derived stem cells was observed using inverted microscopy and transmission electron microscopy. Growth curve of adipose-derived stem cells was drawn. Immunophenotype of adipose-derived stem cells was identified by flow cytometry. Adipose-derived stem cells were induced to differentiate into adipocytes and osteocytes using cellinductors. Compatibility of adipose-derived stem cells and col agen scaffold material was observed using scanning electron microscope. RESULTS AND CONCLUSION:Adipose-derived stem cells exhibited long spindle-like or fibroblast-like appearance, grew intensively and arranged in scrol and fascicular shape. In vitro, adipose-derived stem cells could be passaged to passage 9 under the inverted microscope. Under the transmission electron microscope, adipose-derived stem cells showed abundant microvil i on the cellsurface. The nuclei were big in size. Some organel es were seen in cytoplasma, such as mitochondria and rough endoplasmic reticulum. Adipose-derived stem cells expressed CD44 and CD29, did not express CD34. After inducing by inductor, many smal lipid droplets were seen in the cytoplasm of adipose-derived stem cells. The smal lipid droplets were dyed red with oil red O. After induction of osteogenic inductor, the boundary line among adipose-derived stem cells was not clear and the structure of cells was fuzzy in the growth-intensive areas. There were many strong refractive granular material deposits at that field after dyeing with alizarin red. Scanning electron microscope revealed that adipose-derived stem cells were spread on the col agen scaffold. Results suggested that adipose-derived stem cells isolated by this method could amplify in vitro and stably subcultured. Under a certain inducing condition, adipose-derived stem cells could differentiate into osteoblasts and adipocytes, which showed a good compatibility with col agen scaffold.

Objective To evaluate the ability of diffusion-weighted imaging (DWI) and the apparent diffusion coefficient (ADC) value in diagnosis of pancreatic cancer at 3.0T MR. Methods The diffusion-weigted sequences with b=800 s/mm~2 were performed in 30 patients of pancreatic cancer confirmed pathology, and in 30 control subjects with normal pancreas as well. ADC value of the cancer, pericancerous tissue and normal pancreas were recorded and statistically analyzed with ANOVA and ROC analysis. Results The mean ADC value of cancer, pericancerous tissue and normal pancreas was(1.494±0.273)×10~(-3) mm~2/s, (1.631±0.281)×10~(-3) mm~2/s and (1.778±0.237)×10~(-3) mm~2/s, respectively. ADC value of pancreatic cancer was significant different from that of the normal pancreas, while there was no significant difference between pancreatic cancer and pericancerous tissue. The one-side upper limit of 95% confidence interval of mean ADCs (1.622×10~(-3)mm~2/s)was adopted as the point to diagnosis of pancreatitis. The area under ROC curve was Az=0.800. Conclusion ADC values are helpful to differential diagnosis of pancreatic cancer and normal pancreas. DWI may be do some contribution to the diagnosis of pancreatic cancer.