Objective Renal cell carcinoma ( RCC) is a common renal malignancy, which is resistant to nearly all chemo-therapeutics and radiotherapy.Wnt signaling plays an important role in the tumorigenesis and cell proliferation and apoptosis of RCC. This study was to explore the inhibiting effect of 15-oxospiramilactone NC043, a new Wnt molecule inhibiter, on the xenograft growth of human renal carcinoma (ACHN) cells in nude mice. Methods ACHN cells (1 ×107) were suspended in 100μL PBS and injec-ted subcutaneously into the right side of the posterior flank of female BALB/c athymic nude mice to establish a xenograft model.The nude mice bearing ACHN cells were randomly divided into three groups, negative control, low-dose medication, and high-dose medica-tion, treated by daily intraperitoneal injection of 3%DMSO, NC043 at 45μg/kg, and NC043 at 90μg/kg, respectively, for 15 days. At 16 days, all the mice were killed, the body weight and tumor volume obtained, and the expressions of ki67, TCF4 and β-catenin determined by immunohistochemistry. Results NC043 significantly inhibited the growth of the xenograft tumor, with an inhibition rate of 36.4%in the 45 ug/kg group and 56.4% in 90 μg/kg group.The expressions of ki67, TCF4, andβ-catenin were markedly down-regu-lated in a dose-dependent manner ( P <0.01 ) . Conclusion NC043 can effectively suppress the growth of ACHN cells in the xeno-graft tumor and reduce the expression of Wnt-related proteins, andtherefore is a potential compound for the treatment of renal cell carcinoma.

Objective To investigate the effect of normal saline(NS)of different temperature on morphological changes and nitric oxide synthase(NOS)expression of spinal cord.Methods The spinal canal of 96 SD adult rats was opened at T9.which of 24 rats was flushed with 37 ℃ NS,24 with 20 ℃ NS,24 with 4 ℃ NS respectively,and which of 24 rats in control group received no flushing.The spinal canal was closed one hour later,and the spinal cord was taken out 24 hours later.Then the water content in spinal cord was determined by dry-wet method.The morphological changes of spinal cord were observed under light microscope and the electronic microscope.The amount of NOS-positive neuron was measured by ?-NADPH histochemical methods.Results The water content in spinal cord was(66.53?0.61)% in control group,(66.75?1.00)% in 37 ℃ group,(70.55?0.77)% in 20 ℃ group,(71.92?2.50)% in 4 ℃ group.The spinal cord of control group and 37 ℃ group contained less water than that of 20 ℃ group and 4 ℃ group.There were no obvious morphological changes in the control group and 37 ℃ group.In 20 ℃ and 4 ℃ groups,the demyelination of axon,swelling of cell body and the disappearance of tigroid body were observed under light microscope,the partial disaggregation of medullary sheath,swelling of mitochondria and disappearance of mitochondria crista could be observed under electron microscope.The amount of NOS-positive neuron in spinal cord was(18.75?2.12),(18.63?1.41),(14.75?1.67),(8.13?1.25)in control,37 ℃,20 ℃ and 4 ℃ groups,respectively.The control group and 37 ℃ group showed more NOS-positive neuron than those of 20 ℃ group and 4 ℃ group.Conclusion NS below 20 ℃ can injury spinal cord.It is suitable to choose 37 ℃ NS to flush brain and spinal card during operation.

Objective To understand websites of public hospitals in China.Methods Website search and appraisal were called into play to analyze the percentage and present conditions of websites built by public hospitals in Shanghai,Hubei Province and Gansu Province.Rusults The study found websites in less than 55％ of the public hospitals in these three areas.Those websites in operation provide instant information on hospitals and medical services,yet their online service functions are less satisfactory and website levels vary sharply.Conclusion The authors recommend the Chinese government encourage public hospitals to build websites and enhance their online services.

Objective To sequence and analyze the near full-length genome of an HIV-1 subtype G strain identified in Guangxi,China.Methods The demographic information of an individual infected with HIV-1 subtype G strain was investigated,whose peripherial blood was collected.Viral RNA in plasma was extracted.The near full-length genome of HIV was amplified in two halves using RT-nested-PCR.The PCR products were purified and sequenced.Phylogenetic analysis was made using MEGA6 software.Results A near full-length genome of 8847 bp was obtained.In the neighbor-joining tree,the strain clustered with subtype G references,as supported by the high Bootstrap value (100%).The closest phylogenetic relationship was found between our strain and another subtype G strain (JN106043)previously identified in Guangxi,which was supported by the genetic distance (5%)and high Bootstrap value (100%).Conclusion The strain identified in the study might have originated from subtype G strains in Guangxi,suggesting that subtype G has spread locally in Guangxi.Further surveillance of subtype G epidemic in Guangxi is necessary.The near full-length subtype G strain genome will provide information for the surveillance of HIV in Guangxi.

OBJECTIVEThis study aimed the role of the CCL5/CCR5 axis in the perineural invasion of salivary adenoid cystic carcinoma (SACC) cells.

METHODSImmunohistochemical analysis and flow cytometric analysis were conducted to detect the expression of the chemokine receptor CCR5 in SACC cells. Enzyme linked immunosorbent assay (ELISA) was performed to determine the expression of CCL5 in the supernate of human nerve cells. The flow cytometric analysis was applied to observe the changes in F-actin in SACC-LM cells, which were pretreated with CCL5. To assess the effects of the CCL5/CCR5 axis on the migration and invasion of SACC-LM cells, we performed a scratch test and invasion assay under CCL5 stimulation.

RESULTSCCR5 was highly expressed in SACC cells. The concentration of CCL5 in the supernatant of human nerve cells was (359.2±15.8), (696.4±22.6) pg·mL⁻¹. The CCL5/CCR5 axis promoted the migration and invasion of SACC-LM cells.

CONCLUSIONSThe CCL5/CCR5 axis may be involved in the perineural invasion of SACC cells.

INTRODUCTIONStreptococcus agalactiae (Group B Streptococcus, GBS) is an uncommon cause of septic arthritis in the adult population. In recent years, there has been an increase in the incidence of GBS septic arthritis. This study aims to compare the clinical presentation, investigations, microbiology and outcome of management in patients with GBS and non-GBS septic arthritis.

METHODSRetrospective review of hospital surgical records was done to identify all patients treated surgically at our institution from January 2011 to January 2016 for primary septic arthritis. Patients were categorised into two groups: those with culture-proven GBS septic arthritis and those with causative pathogens that were not GBS. Patients who were medically unfit for surgical intervention as well as those who declined interventional procedures were excluded from the study.

RESULTSA total of 83 patients were included in the study: 62 (74.7%) had non-GBS septic arthritis and 21 (25.3%) had GBS septic arthritis. Patients with GBS septic arthritis were more likely to have polyarticular involvement (p < 0.001) and involvement of less common sites such as the elbow joint. They were also more likely to have elevated inflammatory markers (C-reactive protein > 150 mg/L; p = 0.017) and positive blood cultures (p = 0.02), and were typically healthy adults with no medical comorbidities (p = 0.012).

CONCLUSIONPatients with GBS septic arthritis were more likely to present with polyarticular involvement, positive blood cultures and higher levels of C-reactive protein on admission, and tended to be healthier individuals with no medical comorbidities.