Objective To investigate the toxic effects of ozone on rat astrocytes in vitro. Methods Twelve 1-2 day old Wistar rats were anesthetized with ether. Their brains were removed. Astrecytes were enzymatically isolated with trypsin and cultured. After different-speed cultivation and serial passage, astrocytes were seeded into 24 well plates and divided into 4 groups (n = 7 each): group Ⅰ normal control (group C) and group Ⅱ , Ⅲ , Ⅳ (group O2-O340, 60, 80) were exposed to ozone 40, 60 and 80 μg/ml respectively. After 2 and 4 h incubation, the astroeytes were examined under microscope. Supernatant was collected and cells were broken for determination of SOD activity and MDA content in the cells and LDH leaking ratio. Results Cells in group O2-O3 60 and 80 exhibited hypertrophy, vacuoles and black denatured grains in the cytoplasm and increase in proceses. SOD activity and MDA content were significantly increased at the end of 2 h incubation in group O2-O340, 60 and 80 as compared with blank control group. LDH leaking ratio and MDA content were increased in a concentration dependent manner at the end of 2 h and 4 h incubation, while SOD activity was decreased concentration dependently at the end of 4 h incubation. SOD activity was signifieandy decreased, while LDH leaking ratio was increased at 4 h as compared with that at 2 h in group O2-O360 and 80. Conclusion Ozone has toxic effects on cultured rat astroeytns in a concentration and time dependent manner.

Objective To observe the effect of Shengeyifei capsule on the inflammatory mediators in the airway and the pathology of the airway in the rat with chronic obstructive pulmonary diserse (COPD). Methods 60 SD rats were divided randomly into normal group, COPD model group, Jinshuibao control group and Shengeyifei groups. The COPD model was established by smoking and infusing lipopoly- saccharide (LPS). The level of interleukin-8 (IL-8) and tumor necrosis factor ? (TNF-?) in bronchoalveolar lavage fluid (BALF) were measured and the pathology of the airway and lung tissue was observed after treatment on the rats. Result The levels of IL-8 and TNF-? in Shengeyifei groups were lower than in COPD model group (P

OBJECTIVE:To investigate synergistic effect of carbapenems combined with fosfomycin(FOS)on carbapenems-re-sistant Pseudomonas aeruginosa isolates from urinary tract infections in vitro. METHODS:The minimum inhibitory concentration was detected using agar double dilution method. The fractional inhibitory concentration index was determined by checkerboard meth-od. The effect of carbapenems combined with FOS on biofilm of P. aeruginosa isolates was determined using 96 crystal violet stain-ing. RESULTS:12 strains of carbapenem-resistant P. aeruginosa isolates were highly sensitive to FOS and amikacin,and were com-pletely resistant to imipenem and meropenem. The combination of imipenem with FOS could induce a synergistic effect on 4 strains (33.3%);meropenem combined with FOS could induce a synergistic effect on 5 strains(41.7%);no antagonistic effect of carbap-enems combined with FOS appeared. FOS combined with carbapenems could inhibit the biofilm of carbapenems-resistant P. aerugi-nosa(P<0.05 or P<0.01). CONCLUSIONS:The combination of carbapenems with FOS possesses in vitro synergistic antibacteri-al effect on part of carbapenems-resistant P. aeruginosa isolates,the mechanism of which may be associated with inhibiting the bio-film.

Objective To investigate the alteration of nuclear factor kappa B( NF-κB) and tumor necrosis factor-a (TNF-α) mRNA and protein in hippocampus in chronic constrictive injury (CCI) model of rats. Methods Seventy-six male Wistar rats were randomly divided into 2 groups ( n = 38): the CCI group which received the chronic constriction injury and the sham group which received the sham operation as control. The mechanical and thermal nociceptive thresholds were assessed with paw withdrawal latency (PWL) to von Frey filaments and radiant heat at 1d before and ld,4d,7d,14d and 28d after CCI operation. Five animals were sacrificed at each time point for real-time polymerase chain reaction (real-time PCR) and another three animals sacrificed at 7d postoperation for immunofluorescence histochemical staining. Results The thresholds to mechanical and thermal stimuli decreased obviously after operation in CCI group. The expressions of TNF-α and NF-κB mRNA began to increase at ld( (2.079 ±0. 104)times and 4d( ( 1.640 ± 0.064) times) after operation and reached the peak at 7d ((2.748 ±0.147)times, (2.010 ±0.096)times) ,then the expressions of TNF-a mRNA began to decrease,while the expressions of NF-kB mRNA maintained at a high level throughout the experiment. The result of immunofluorescence histochemical staining revealed that NF-kB and TNF-α protein expressions at 7 day increased significantly on the hippocampus,which was consisted with NF-κB and TNF-a mRNA levels. Conclusion The activation NF-κB and TNF-α in hippocampus may be involved in the procession of neuropathic pain.

Objectives To evaluate the application of M38-P method recommend by NCCLS to dematiaceous fungi, and detect the susceptibility of itraconazole, fluconazole, miconazole, econazole, flucytosine, clotrimazole, nystatin, amphotericin B and terbinafine against dematiaceous fungi. Methods Using M38-P method forty-five strains of dematiaceous fungi were studied, which included 2 strains of Bipolaris spp., 1 strain of Drechslera spp., 1 strain of Curvularia spp.,14 strains of C. carrionii, 8 strains of F. pedrosoi, 3 strains of F. compacta and 16 strains of P. verrucosa. The media containing the fungi in the concentrations of (0.4 ~ 5) ? 106 CFU/mL were incubated at 35℃ for 5 ~ 7 days. Results The tested dematiaceous fungi were highly susceptible to itraconazole and terbinafine. Some of them were resistant to itraconzole, fluconazole, flucytosine and amphotericin B. Conclusions The data suggest that M38-P standards could be applied as the susceptibility testing of dematiaceous fungi, and it is necessary to monitor the resistant strains in antifungal treatment.

ObjectiveTo evaluate the effect and safety d sorafenib in treatment of patients with metastatic renal cell carcinoma.Methods40 patients with metastatic renal cell carcinoma,were given sorafenib tablets methanesulfonate treatment,the initial dose of 800mg/d,bid,continuous administration of 21d,stopping 7d,The adverse reactions,efficacy and immunohistochemistry results were observed.Results40 cases with metastatic renal cell carcinoma were not found complete remission (CR) and partial remission (PR) ; The 32 cases in stable disease (SD)(80.0％ ) and 8 cases ( 20.0％ ) in PD; The incidence of 28 cases ( 70.0％ ) in digestive system; The expression of positive rate 30.5％ of local in connexin 32,Cx32 was significantly lower than that 1.2％ in metastatic renal cell carcinoma( x2 =8.123,P ＜0.01 ),The expression of Cx32 was negatively correlated with the clinical stage( r =-0.419,P ＜0.05 ) ;The expression positive rate of vascular endothelial growth factor(VEGF) in renal cell carcinoma was significantly higher than 18.5％ in normal renal tissue( x2 =8.723,P ＜ 0.01 ) ; The expression positive rate 72.0％ in the limitations of renal cell carcinoma and metastatic renal cell carcinoma 89.1％ was not statistically significant( x2 =1.978,P ＞ 0.05 ).ConclusionSorafenibin for advanced kidney cancer had better disease control effect,and was new choice for treatment of metastatic renal cell carcinoma.

Objective To target the disease gene of disseminated superficial form of porokeratosis (DSP) in a six-generation of a Chinese family including a total of 254 family members in Shandong province. Methods The clinical data and the peripheral blood samples were collected in the pedigree members. The genomic DNA was extracted from the blood samples. A genome-wide scan was performed using 382 pairs of primers labelled with fluorescent stain. The primers were designed for human autosomes. The sequencing results were analyzed by the software of Genescan and Genotype. Linkage analysis was processed by Linkage software package to define the region of disease gene. For fine targeting the disease gene, other 10 micro-satellite markers for the above region were set up for further fine sequencing. Results We obtained the maximum two-point LOD scores of 3.06 at micro-satellite marker D12S78 (recombination fraction ? = 0.00). After fine mapping, the DSP gene is located within a 38.5 cM region between markers D12S326 and D12S79. Conclusion The DSP gene is mapped to chromosome 12q21.2~24.2.

OBJECTIVE:To investigate the efficacy and safety of carvedilol in patients with chronic heart failure(CHF). METHODS:46patients with CHF were randomly divided into carvedilol group(n=26)and control group(n=20),thareinto,standard therapeutic scheme is used in control group,standard therapeutic scheme+carvedilol is used in carve diol greup.The treatment courses were6months in both groups.RESULTS:Left ventricular end-diastolic diameter(LVEDD)reduced and left ventricular ejection fraction(LVEF)increased in carvedilol group with significant difference comparing with control group(P

Objective To investigate the analgesic effect of Resolvin D1 (RvD1) on radicular pain induced by herniated nucleus pulposusand its underlying mechanism.Methods Fifty-six male rats were randomly divided intoa sham group,a model group,a 10 ng group anda 100 ng group,each of 14.The rat model of non-compressive lumber disc herniation was established in all except the sham group.The former two groups were then injected with 10 μl of phosphate buffer solution (PBS) while the latter 2 groups were injected with 10 μl of PBS containing 10 and 100 ng of RvD1 respectively daily for three successive days.The rats' 50％ paw withdrawal threshold (PWT) was evaluated 1 day before and on 7 successive days after surgery.On day 7 the rats' spinal cords were removed to assess the expression of tumor necrosis factor-or (TNF-α),interlukin-1β (IL-1β) and interlukin-10 (IL-10) using ELISA methods.The levels of ERK and NF-κB/p65 were measured using Western blotting.Results Theaverage 50％PWT of the model group decreased significantly from day 1 to day 7 compared with the sham group,but was significantly lower thanthe RvD1 10 ng group from day 3 to day 7.Moreover the 50％PWT in the RvD1 100 ng group increased significantlyfrom day 2 to day 7 compared with the model group (P＜0.05).The average expression of both TNF-α and IL-1β of the model group was upregulated significantly and that of IL-10 decreased significantly compared with the sham group.Compared with the model group,the expression of TNF-α and IL-1β decreased significantly (P＜0.05)and the level of IL-10 was significantlyup-regulated (P＜0.05) both in the RvD1 10 ng group and 100 ng group.Moreover,the changes were larger in the RvD1 100 ng group (P＜0.05).Compared with the sham group,the levels of p-ERK and NF-κB/p65 in the model group were significantly up-regulated (P＜0.05).Compared with the model group,intrathecal injection of RvD1 (10 ng or 100 ng) significantly decreased the expressions of p-ERK and NF-κB/p65 (P＜0.05).Moreover,the decrease wasgreater in the RvD1 100 ng group (P＜0.05).Conclusions RvD1 might alleviate the radicular inflammation and pain byregulating the balance of inflammatory mediators and activation of p-ERK and NF-κB/p65 pathways.It may offer novel therapeutic approaches for the management of lumbar disc herniation.

Objective To assess the relationship between reconstruction of coronal trunk shift and changes of unfused segments after selective posterior thoracolumbar/lumbar curves fusion for idiopathic scoliosis.Methods Radiographic data of patients with thoracolumbar/lumbar idiopathic scoliosis who underwent selective posterior correction at our hospital from October 2005 to October 2011 with a minimum of 2 year follow-up period was retrospectively analyzed.Posteroanterior and lateral radiographs of the whole spine before surgery,after surgery and at the last follow-up were performed.Changes of coronal trunk shift during follow-up period were observed and multiple linear regression analysis was performed to determine its relationship with changes of upper thoracic curve,main thoracic curve,lumbar curve,distal unfused segments and coronal sacral inclination.Results Thirty-seven patients with 4 males and 33 females were included in this study.The average age was 14.6±2.0 years (range,12-20 years).The mean follow-up period was 3.6 years (range,2-8.9 years).The mean preoperative Cobb angles of lumbar and thoracic curve were 44.2° and 25.2°,respectively.At the last follow-up,they were corrected to 10.3° and 13.6°,indicating 75.7％ and 44.9％ correction rate,respectively.The pre-and post-operative mean trunk shifts were 2.2 cm and 2.0 cm with no significant differences.At the last follow-up,it compensated to 0.9 cm,which showed significant differences compared with that of postoperation.Linear regression analysis suggested that trunk shift changes during follow-up period were only correlated with changes of distal unfused segments.The regression equation could be described as Changes of trunk shift (cm) =1.248 7+0.137 8×Changes of distal unfused segments (°).Conclusion The reconstruction of coronal trunk balance is mainly compensated by distal unfused segments after selective posterior correction for thoracolumbar/lumbar idiopathic scoliosis.Although preserved most of its levels,unfused thoracic segments do not play an important role in the reconstruction of trunk shift.