This study is to find out the induction by sodium nitrite of epithelial-mesenchymal transition (EMT) in human hepatocellular carcinoma cells, SMMC-7721. After treatment of SMMC-7721 with 0.25 - 25 mmol.L-1 sodium nitrite for 48 h, the assays used include enzyme-linked immunosorbent assay (ELISA) for evaluation of TGF-beta1, IL-6 and IL-8 level in the conditioned medium, phase-contrast microscopy for morphology observation, and scratch wound healing as well as transwell migration assays for measurement of migration and metastatic potential. Additionally, the hallmarks of EMT, p-AKT and its downstream signaling molecules were examined by Western blotting. The results showed that TGF-beta1 secreted by SMMC-7721 elevated significantly in a dose-dependent fashion, whereas the increased IL-8 and IL-6 did not show dose-dependent response. The EMT was induced by exposure of SMMC-7721 with 0.25 mmol.L-1 of sodium nitrite, which was characterized by increased level of Vimentin, decreased E-cadherin and elevated activity of migration and metastatic potential. The results suggest that sodium nitrite could induce SMMC-7721 EMT by increased secretion of TGF-beta1 and IL-8.

Objective To evaluate the application value of 3 main parameters of diffusion kurtosis imaging(DKI) in diagnosis of prostatic carcinoma in the peripheral zone.Methods Conventional MRI and DKI were performed in 40 patients with histological confirmed as prostatic carcinoma in the peripheral zone.The values of ADC,FA and MK were calculated in the patients' tumor center and normal areas of the peripheral zone,and compared by two samples t-test.ROC curve were carried out to analyze the ability of ADC,MK and FA in differentiating prostate carcinoma from normal tissue in the peripheral zone.Results The mean values of MK and FA were significantly higher in tumor center than those in normal areas of the peripheral zone,and the ADC values were lower in tumor center,the differences were signicant(P<0.01).ROC curve analysis showed that the AUC of the ADC,FA and MK values were 0.966,0.871 and 0.998,respectively.Conclusion The 3 parameters of DKI could be a potential tool in diagnosing prostate carcinoma in the peripheral zone.The MK value has the highest sensitivity and specificity.

Objective: To investigate into the prevention and cure effects of Bushen Ningxin Decoction(BSNXD) on postmenopausal osteoporosis.Methods: Postmenopausal osteoporosis model of female BALB/c mice(8-9 months age) were founded and afforded with the same volume of Chinese traditional medicine(BSNXD),17?-estradiol(E2) and saline(OVX),respectively.The skeleton,blood and uterus of each group were collected after 12 weeks of treatment.The uterus was weighed and analyzed histomorphometrically for differences.The level of IL-4 and IFN-? in serum was detected by ELISA,the bone mineral density(BMD) of excised vertebra(L_(3-4)) and left femurs were measured by DEXA,right femurs were measured for norphometry of bone tissue,and semi-quantitative RT-PCR was performed to compare the level of mRNA level of osteoprotegerin(OPG) from tibia.Results: The level of BMD,area of bone trabecula and OPG mRNA in BSNXD group and E2 group were higher than that of OVX group.The IFN-? level of BSNXD group was improved significantly,and the IL-4 level was reduced comparing to that of OVX group(P

Circulating tumor cells (CTCs) mediate distant metastasesof many kinds of cancer.The detection and characterization of CTC through different enrichment and isolation methods play important roles in assessing of prognosis, monitoring of therapy response and decision making of personalized treatment.With the development of continued research, detection of CTC may become a routine test for therapeutic decision making of cancer.

Lymph node metastasis is the main prognostic factor of endometrial cancer patients.As the metastasis of early endometrial cancer patients is very low,it remains a controversy whether these patients are necessary to undergo conventional lymphadenectomy and a challenge to confirm the scope of lymph node dissection.We intend to demonstrate the application of lymphadenectomy in patients with early endometrial cancer via the impact of lymphadenectomy on the prognosis of these patients.The risk factors for lymph node metastasis of endometrial cancers were analyzed to explore its value in the surgical option.Furthermore,the guidance of sentinel lymph node in surgical staging and prognostic prediction of early endometrial cancer was explored to clarify the applied condition and scope of lymphadenectomy in these patients.

Bone metastasis is the most freguently in breast cancer. To diagnose and treat bone metastasis in time, is very important to improve quality of life and prolong the survival time of patients. Recently the effect of tumor marker on bone metastasis in breast cancer was regarded increasingly. The article reviewed the development of tumor marker research on diagnosis, treatment of bone metastasis in breast cancer.

Based on special biological characteristics and prognosis, the incidence of gastroesophageal junction adenocarcinoma (GEJA) has rapidly increased over recent years, and its diagnosis and treatment remain controversial. Compared with simple surgery, neo-adjuvant and adjuvant therapies can improve the survival of patients with locally advanced GEJA. Under neo-adjuvant therapy, neo-adjuvant chemoradiation is superior to neo-adjuvant chemotherapy alone for improving the resectability, maintaining loco-regional control, and improving the quality of life of the patient. The combination of this therapy with targeted drugs may further increase the ef-ficacy of GEJA. Most data on GEJA-treated patients were obtained from randomized clinical studies on esophageal cancer or gastric cancer. Thus, prospective randomized controlled studies with a large sample size should be performed to optimize the strategy of neo-adjuvant and adjuvant therapies, and further improve the treatment outcome. In this article, studies on the comprehensive treatment of GEJA were reviewed.

Objective To detect whether there is neurotropism following end-to-side neurorrhaphy by means of the neuron retrograde tracing technique. Methods Forty female Sprague-Dawley rats were randomly divided into 4 groups: tracing main branch of musculcutaneous nerve(MC) of end-to-side group, tracing MC main branch of normal group, tracing MC motor branch of end-to-side group and tracing MC motor branch of normal group.In two end-to-side groups, the MC was transeeted, then an 1 mm epineukral window was created on the ulnar nerve. Distal end of MC nerve was sutured to the windowed ulnar nerve by means of end-to-side neurorrhaphy.In two normal control groups, MC and ulnar nerves were just exposed. Five months post operation, by means of retrograde Fluoro-Gold neuron tracing technique,the number of C5～ T1 anterior horn motoneurons and dorsal root ganglion sensory neurons of all groups were counted. Results In two tracing MC main branch groups: the motor neuron counts in end-to-side group was 245.2 ± 93.8, the motor neuron counts in normal group was 846.7 ± 264.8, and counts of end-to-side group was 30.0% of the normal control group (P＜ 0.01). The sensory neuron counts in end-to-side was 434.7 ± 160.4, the sensory neuron counts in normal group was 1545.2 ± 287.4, and counts of end-to-side group was 28.1% of the normal control group (P ＜ 0.01). The per-centage of motor neuron in end-to-side group was 0.36 ± 0.09, there was no difference between end-to-side group and normal control group(P＞ 0.05). In two tracing MC motor branch groups: the motor neuron counts in end-to-side group was 72.3 ± 35.3, the motor neuron counts in normal group was 189.7 ± 57.0, and counts of end-to-side group was 38.1% of the normal control group (P ＜ 0.01). The sensory neuron counts in end-to-side was 110.8 ± 52.5, the sensory neuron counts in normal group was 157.9 ± 50.0, and counts of end-to-side group was 70.2% of the normal control group (P ＞ 0.05). The percentage of motor neuron in end-to-side group was 0.40 ± 0.14, the difference between end-to-side group and normal control group was signifieant(P ＜ 0.01 ). Conclusion Neurotropism in collateral spouting after end-to-side neurorrhaphy is not significant.

Objective To evaluate the clinical significance of single-incision video-assisted thoracoscopic surgery(SI-VATS)in elderly patients undergoing pneumonectomy. Methods The clinical data of elderly patients received pulmonary resection by SI-VATS and three-port video-assist-ed thoracoscopic surgery(TP-VATS)last year were analyzed. Results The SI-VATS group was significantly better than the TP-VATS group in in-cision length,drainage time,as well as the 1st,3rd,7th day VAS score and one month satisfaction after operation(all P<0.05). However,no sig-nificant difference was found in operation duration,blood loss,lymph node number,or complications(all P>0.05). Conclusion SI-VATS pul-monary resection is safe,feasible and with less invasive.

Objective To explore the effect of multiplex methylation specific PCR for early diagnosis of nasopharyngeal carcinoma. Methods The methylation status of 18 genes were verified by MSP from 35 early nasopharyngeal carcinoma andmultiplex-MSP was established through the optimized working condition for rapid detection of several genes′ methylation status. Results The methylation rate of 12 genes exceeds 50%. The methylation specific products in only one group (Segment U) did reach the expected results while those from the other three groups were consistent with the MSP′s. Conclusion Multiplex-MSP is an efficient and low-cost method, and it can produce ideal experimental results similar to those by the MSP and DNA microarrays.