Objective To introduce ward calling system based on power line communication. Methods The system is de- signed based on SCM and spread spectrum communication chip. It adopts principal and subordinate structure, transmits data on low-voltage power line. The spread spectrum communication chip is SC1128, which is specially designed for Chi- nese low power line. Results The system can communicate correctly in testing, and the max communication distance is 500m. Conclusion The system have many functions such as line up shows, priority setting, records storage, etc. It has been fit to be put into use and be extended in all of the various levels of hospital.

Objective To evaluate the effect of morphine on the proliferation and migration of human hepatocellular carcinoma (HCC) cells in an in vitro experiment.Methods The experiment was performed in 2 parts.Experiment Ⅰ Human HCC cells were inoculated in 6-well plates at a density of 2×105 cells/well (2 ml/well) and divided into 6 groups (n=12 each) using a random number table:control group (C group) and 10,25,50,100 and 200 ng/ml morphine groups (M1-M5 groups).Morphine at the final concentration of 10,25,50,100 and 200 ng/ml was added in M1-M5 groups,respectively.The equal volume of phosphate buffer solution was added in group C.The cells were cultured or incubated for 48 h.The expression of μ1-opioid receptor (MOR1) mRNA was measured by real-time polymerase chain reaction.The expression of MOR1 was detected by Western blot in C and M4 groups.Experiment Ⅱ Human HCC cells were inoculated in 96-well plates (1×103 cells/well) or in Transwell chambers(200 μl) and divided into 2 groups (n=9 each) using a random number table:control group (C group) and morphine group (M group).Morphine was added at the final concentration of 100 ng/ml in group M,and the equal volume of phosphate buffer solution (final volume 100 μl/well) was added in group C.The cells were cultured or incubated for 7 days.The cell proliferation was detected by methyl thiazolyl tetrazolium assay at 1-7 days of incubation or culture.The cell migration was determined by Transwell chamber assay at 30 h of incubation or culture.Results Experiment Ⅰ Compared with group C,the expression of MOR1 mRNA was significantly up-regulated in M1-M5 groups,and the expression of MOR1 was significantly up-regulated in group M4 (P<0.01).Compared with group M4,the expression of MOR1 mRNA was significantly down-regulated in M1-M3 and M5 groups (P<0.01).Experiment Ⅱ Compared with group C,the cell proliferation was significantly enhanced on 4th-7th days of incubation,and the number of cells passing through Transwell chambers was increased in group M (P<0.05 or 0.01).The cell proliferation was gradually enhanced on 4th-7th days of incubation in group M (P<0.05).Conclusion Morphine can promote the proliferation and migration of human HCC cells,and the mechanism is related to up-regulation of MOR1 expression in an in vitro experiment.

Objective To demonstrate the visual results and complications of an cryopexy in combination with intravitreal injection of expending gas in the therapy of primary rhegmatogenous retinaldetachment (RRD). Methods Thirty-two cases (32 eyes) were retrospectively reviewed in this study. The RRD diagnosis was confirmed by best corrected visual acuity,slit-lamp microscope,indirected ophthalmoscope and Goldman three-mirror contact lens. All patients had undergone cryopexy with intravitreal gas injection and assisted by correct body position. Patients were followed for 6 to 24 months. Post-operative BCVA,final anatomical outcome, complications and failed cases were analyzed. Results The reattachment rate of cryopexy with intravitreal gas injection was 81%(26/32 eyes). Four eyes required additional scleral buckling. Two eyes needed additional vitrectomy with intravitreal injection of expending gas (SF6).Final retinal reattachment was achieved in all 32 subjects (100%). Postoperative BCVA was significantly improved (P < 0.01). Conclusion Cryopexy with intravitreal gas injection is a simple,less trauma, lower cost and effective surgery for primary rhegmatogenous retinaldetachment.

BackgroundRecent researches suggested that properties of neurons in the lateral geniculate neuron (LGN) may represent an important neural limitation on the development of basic spatial and temporal vision,and even binocular rivalry.However,previous studies on the properties of spatiotemporal frequency tuning of LGN were rather concentrated on a monkey or cat,whereas little is known about rat.ObjectiveThis study was to examine the development of spatiotemporal frequency tuning in rats LGN.MethodsTwenty Wistar rats were collected and divided into 14-16 day,20-22 day,27-30 day and 60 day groups according to the different ages after their eyes opened and 5 rats were assigned for each group.Extracellular single neuron recording was carried out in the rats to study the spatio-temporal receptive field properties of neurons in LGN by sinusoidal gratings visual stimuli.Dynamic changes of the spatio-temporal receptive field properties of neurons in LGN with the development of Wistar rats were evaluated.ResultsThe differences between band-pass and low-pass distribution of temporal frequency or spatial frequency of rat LGN were not statistically significant (x2 =0.68,0.47,P＞0.05 ).The optimal temporal frequency of receptive field in rat LGN went up to the maximum value until 60 day in Wistar rats.The mean optimal temporal frequencies of neurons in the four different age groups were ( 2.5 ± 1.3 ),( 2.6± 1.2),(2.6± 1.1 ) and ( 3.6± 1.1 ) Hz with significant differences among the 4 groups (F=4.53,P＜0.05 ),and those in the 14-16 day group,20-22 day group,27- 30 day group were significantly lower than in the 60 days group ( q =4.43,4.10,4.03,P ＜ 0.05 ).No significant differences were seen among the 14-16 day group,20-22 day group and 27-30 day group ( P＞0.05 ).The optimal spatial frequency values in the four groups were ( 0.04 ± 0.04 ),( 0.04 ± 0.03 ),( 0.05 ± 0.03 ),( 0.05 ± 0.04 ) cpd,respectively without statistical difference among them ( F =0.58,P ＞ 0.05 ).The temporal and spatial bandwidth values in the various age groups were not statistically significant among the four groups ( F =0.37,1.22,P＞0.05). Conclusions The development of temporal and spatial frequency characteristics of the rat LGN receptive field may be related to its functional visual pathway.

With dwindling number of new antibiotics and inappropriate use of antibiotics, the emergence and spread of antibiotics resistance occurs commonly in healthcare institutions worldwide. In China, antibiotics are commonly overprescribed and misused. This study is to assess the effect of the nationwide special campaign on antibiotic stewardship program (ASP) at specialized hospitals in China by investigating prescription information from 2011 to 2012. Data on the hospital consumption and prescription of systemic antibiotics were obtained from four specialized hospitals, including maternity, children's, stomatological and cancer hospitals. Systematic random sampling was used to select outpatient prescriptions and inpatient cases. A total of 105 specialized hospitals in 2011 and 121 specialized hospitals in 2012 were analysed. The defined daily doses (DDDs) per 100 inpatient days, the percentage of antibiotic use in outpatient prescriptions, and the percentage of antibiotic use in inpatient cases were used as measurements of antibiotic use. The overall antibiotic use density in the selected hospitals decreased between 2011 and 2012 from 39.37 to 26.54 DDD/100 inpatient days (P<0.001). The percentage of antibiotic use in outpatient prescriptions (range: 24.12%-18.71%, P=0.109) and inpatient cases (64.85%-60.10%, P=0.006) also decreased within the two years. Significant changes were observed among regions and different hospitals within the two years. And antibiotic consumption was correlated with the type and size of specialized hospital in 2012, but not with the regions. This analysis of antibiotic consumption of specialized hospitals allows relevant comparisons for benchmarking and shows that national ASP has improved antibiotic rational use in China. The data will assist policymakers in formulating effective strategies to decrease antibiotic overuse and identify areas that require further work.

A novel member of extremely halophilic archaea, strain AJ2, was isolated from Ayakekum Lake located in Altun Mountain National Nature Reserve of Xinjiang Uygur Autonomous Region in China. The strain AJ2 requires at least 10% (w/v) NaCl and grows 10% to 30% (optimum at 20%). Phylogenetic analysis based on 16S rDNA sequence comparison revealed that strain AJ2 clustered to three Natrinema species with less than 97.7% sequence similarities, suggesting AJ2 is a novel member of Natrinema. A bacteriorhodopsin-encoding (bop) gene was subsequently detected in the AJ2 genome using the polymerase chain reaction technique. The cloning and sequencing of a 401 base pairs fragment indicated the deduced amino acid sequence of bop from AJ2 is different from that reported for bacteriorhodopsins. This is the first reported detection of a bop gene in Natrinema.
Bacteriorhodopsins ; genetics ; metabolism ; Cell Proliferation ; Gene Expression Profiling ; Genome, Archaeal ; Halobacteriaceae ; classification ; isolation & purification ; physiology ; Phylogeny ; Sequence Analysis, DNA ; Species Specificity

C8orf32 is a gene which has not been functionally characterized,the mRNA level of this gene is significantly higher in breast cancer tissues than that in normal breast tissues.The amplified cDNA fragment was inserted into the pGEX-6P1 vector fused with the upstream GST gene.The expression vector was transformed into the E.coli BL21(DE3) strain and expression of GST-C8orf32 fusion protein was induced by IPTG..After removal of GST tag by site-specific protease,the C8orf32 protein fused with an eight amino acid peptide tag was obtained.The purity of recombinant C8orf32 protein was about 95%.The identity of the purified protein was confirmed by N-terminal sequencing and tandem mass spectrometry.The polyclonal antibody was prepared by immunizing the New Zealand white rabbits with C8orf32 protein.The polyclonal antibody was proved to recognize the C8orf32 protein correctly.The purified C8orf32 protein can be used for structural and functional studies and the polyclonal antibody can be used for tissue specific protein expression profiling.

ObjectiveTo investigate the protective effect of sevoflurane postconditioning (Sevo-Postcon)on the hearts isolated from rats with diabetes mellitus (DM) of different duration against ischemia-reperfusion (I/R)injury.MethodsSeventy-two pathogen-free male SD rats weighing 200-240 g were randomly divided into 3 groups ( n =24 each):group Ⅰ rats without DM (C) ; group Ⅱ rats with 2 week DM (2w DM) and group Ⅲ rats with 6 week DM (6w DM).DM was produced by intraperitoneal (IP) 1％ streptozocin (STZ) 60 mg/kg and confirmed by fasting blood glucose concentration ＞ 16.7 mmol/L in groups Ⅱ and Ⅲ.Hearts were isolated from rats and perfused with Krebs-Henseleit buffer (KHB) in a Langendorff apparatus.After a 15 min stabilization period,the isolated hearts were subjected to 30 min of global no-flow ischemia followed by 75 min of reperfusion.Twelve hearts in each group were perfused after ischemia with KHB saturated with 3％ Sevo for 15 min followed by perfusion with regular KHB for 60 min.LVEDP,LVDP, ± dp/dt and HR were measured and recorded after 15 min stabilization (T0,baseline) and at 15 and 75 min of reperfusion (T1,2 ).Myocardial specimens were obtained at 15 min of reperfusion (T1) for detection of p-Akt expression (by Western blot analysis).Infarct size was determined at 75 min of reperfusion (T2).ResultsSevo-Postcon significantly improved cardiac function,reduced infarct size and up-regulated p-Akt expression in groups Ⅰ (C) and Ⅱ (2w DM),while in group Ⅲ (6w DM) Sevo-Postcon did not cause any change in cardiac function,infarct size and p-Akt expression as compared with the isolated hearts without Sevo-Postcon.ConclusionThe cardioprotective effect of Sevo-Postcon can be attenuated with increasing duration of DM by impairing PI3K/Akt signaling pathway.

Objective To discuss the value of double-row allograft bone suture anchor in repair of rotator cuff injury. Methods Under assistance of arthroseope, 16 cases of rotator cuff lesions were repaired by using double-row allograft bone suture anchors. There were 10 males and 6 females at average age of 44 years (32-58 years). According to Bigliani classification, there were 6 cases of small ruptures, 8 medial ruptures and 2 large ruptures. After rotator cuff was trimmed and acromial bone was re-shaped under arthroscopy, 2 bone anchors attached to suture lines were implanted in the attachment point of rotate cuff of humerus greater tuberosity side by side. Then, the 4 ends of the 2 suture lines were vertically sutured through tendon of supraspinatus mnscle and tied separately, crossing the 4 ends of 2 knots and penetrated each 2 ends into one bone anchor. Finally, these 2 bone anchors were embedded into 2 predrilled bone holes which were parallel to the former 2 anchors and lower in humerus greater tuberosity. Thus, a web was formed and overlapped on the ruptured rotator cuff. The number of bone anchors was according to the size of rupture. Results All cases were followed up for average 14 months (6-23 months). The mean UCLA score was (21.30±5.6) points preoperatively and (32.4±5.8) points postoperatively. The function of shoulders recovered well, with no pain, recurrence or pulling out of bone anchor. Function was excellent in 10 cases, good in 5 and fair in 1. Conclusions As for repair of rotator cuff injury, double-row bone-anchors under arthroscope can provide a tendon-bone interface better suited for biologic healing of rotator cuff. Bone suture anchor can not leave any foreign object residual and costs less.

Objective To know the efficacy and safety of the blood sugar control by double-pump a-mong severe patients with duodenectomy. Methods Divided 60 severe patients with doudenectomy into the experimental group and the,control group randomly, there were 30 cases in each group. In the control group, pa-tients received intravenous infusion with the liquid containing glucose and neutral insulin (4g: 1 U), intravenous injection of 50U neutral insulin added into 50ml normal saline by micro-pump, the pump speed was In the ex-perimental group, sugar-containing liquid without insulin was infused within 24 hours by infusion pump with u-niform speed, a neutral insulin 50U mixed with 5Oral normal saline were injected by micro-pump according to the ratio fo glucose 4g: 1U neutral insulin through the same vein. Which also adjusted the pump speed according to maintaining blood sugar in the range of 4.4～8.3mmol/L. Compared the level of blood sugar control, treatment safety, efficacy and the workload of nurses between the two groups. Results The highperglycemic index and the time to achieve target values of blood sugar in the experimental group was shorter than in the control group respectively, while the time of keep blood sugar in idea level in the experimental group was longer than in the control group. There were no significant difference about incidence rale of hypoglycemia and workload of nurses between the two groups. Conclusions Double-pump can effective control blood sugar for severe patients with duodenectomy without burden nurses' workload, which is more reasonable than the traditional method.