Objective　To explore the effects of treatment and mechanism of sodium salicylate on blast deafness. Methods　Guinea pigs were divided into blast group, blast plus sodium Salicylate group and sodium solicylate group. The animals in the blast group were exposed to blast average peak pressure 176.7 dB(SPL); sodium salicylate was injected IP 400 mg/kg,1/d. Monitoring ABR threshold, the value of MDA of and counting the number of hair cells on the cochlea preparation, SEM for hair cells was observed. Results　The ABR threshold shift in the blast group was 46.75±13.56 dB，38.0±12.4 dB,35.5±10.67 dB，41.5±12.57 dB,33.75±8.42 dB, post-blast 1 d，3 d，1 w，2 w,4 w respectively. And that of the blast plus sodium salicylate was 46.65±11.7 dB，38.25±9.52 dB,30.5±9.17 dB,30.0±9.17 dB,23.0±6.57 dB. The two groups differed significantly at 1 w，2 w，4 w(P＜0.05). The value of MDA differed significantly at 2 w,4 w(P＜0.05). And the hair cells lost also differed significantly. It was observed that sodium salicylated can raise the ABR thresbold temporarily 24 hrs during simple sodium salicylate adminastration. However it recovered 14 hrs after the injection.Conclusion　Sodium salicylate can partially attenuate the hearing loss caused by blast. It is probable that sodium salicylate can clear peroxicative produced during blast and therefore protect hair cells and make hearing loss partially recover.

Objective To investigate the clinical efficacy and safety of tolterodine combined with flupentixol melitracen in the treatment of women with overactive bladder (OAB).Methods 84 female patients with OAB were chosen and randomly divided into the observation group and the control group.42 cases in observation group were treated with tolterodine combined with flupentixol melitracen.42 cases in control group were only treated with tolterodine.The clinical efficacy was recorded and compared after treatment for 4 weeks.Results The total effective rate of the observation group was higher than the control group (95.24％ vs 76.19％,x2 =6.291,P ＜ 0.05).The 24h frequency of urination,the average 24h number of incontinence episodes,initial urinate capacity and maximum bladder pressure capacity had statistically significant differences between the two groups (all P ＜ 0.05).Conclusion Tolterodine combined with flupentixol melitracen in the treatment of women with OAB has advantages of short course of treatment,excellent efficacy,and few side effects.

Objective To evaluate the commutability of certified reference material IRMM ERM-DA 471/IFCC for cystatin C measurement among 8 methods.Methods 46 individual samples used for the commutability study were residual serum samples collected from clinical laboratories.The individual samples interspersedwith pooled sera and the certified reference material IRMM ERM-DA 471/IFCC and the whole set of samples was divided into 2 subsets for measurements in 2 days.The measurements were performed by8 different methods o.The samples were measured in duplicate order.Calibration was performed every day. Passing-Bablok regression was performed to compare the slopes and intercepts of mean values of the serum samples derived from different methods. Pearson correlation cofficient was also calculated. Deming regeression and 95%confidence intervals were calculated to evaluate the statistics commutability of ERM-DA 471/IFCC.The minimal specification of bias derived from biological variations was calculated to evaluate the clinical commutability.Results The within-laboratory CVs of pool sera ranged from 0.5% to 4.0%.The Passing-Bablok slope ranged from 0.765 to 1.311 and intercepts ranged from -0.04 to 0.241.The determination coefficient of Pearson regression ranged from 0.988 to 0.999.Deming regeression and 95%confidence intervals demonstrated commutability of ERM-DA 471/IFCC in 4/28 (14.3%) methods pairs. The minimal specfication bias ( 5.12%) demonstrated commutability of ERM-DA 471/IFCC in15/28 (53.6%) methods pairs.Conclusions The ERM-DA 471/IFCC domonstrated poor commutability between some methods pairs. The commutability of ERM-DA 471/IFCC should be evaluated before used as calibrators.

[ ABSTRACT] AIM:To observe the effect of ginsenoside Rb 1 on the proliferation and the expression of serotonin transporter (SERT), 5-hydroxytryptamine 1B receptor (5-HT1BR) in rat pulmonary artery smooth muscle cells (PASMCs) under hypoxia condition and the relationship with Rho /Rho-kinase signal pathway .METHODS: PASMCs were isolated from the adult male SD rats and primarily cultured .The subcultured cells from the 4th generation to the 6th generation were harvested and divided into normal group , and hypoxia group , different concentrations of Rb 1 incubation groups treated with 50, 100 and 200 mg/L ginsenoside Rb1 under hypoxia (HR50, HR100 and HR200 groups, respectively).The viability of the PASMCs was measured by CCK-8 assay.BrdU positive cells were determined using flow cytometry .The expression of serotonin transporter and 5-HT1BR at mRNA and protein levels was detected by RT-PCR and Western blot, respectively. The PASMCs were randomly divided into normal group , hypoxia group , HR200 group and hypoxia +Y-27632 incubation group ( HY group ) .The mRNA expression of Rho-kinase and phosphorylated myosin phosphatase target subunit 1 ( p-MYPT1) protein level were investigated by RT-PCR and Western blot, respectively.RESULTS: Compared with normal group, the proliferation of PASMCs in hypoxia group was significantly increased (P<0.01).The cell viability and the ex-pression of SERT and 5-HT1B R at mRNA and protein levels in all different concentrations of Rb 1 groups were obviously de-creased compared with hypoxia group ( P<0.05 ) .The mRNA expression of Rho-kinase and protein level of p-MYPT1 were markedly decreased in HR200 group, and no significant difference compared with HY group was observed ( P <0.01).CONCLUSION: Treatment with ginsenoside Rb1 might prevent hypoxia-induced proliferation of PASMCs and over-expression of SERT and 5-HT1B R through inhibiting the Rho/Rho-kinase pathway .

Objective To investigate the application of multiple dilators for excessive expansion of scalp with hair covering and integrated use of expanded flap to repair cicatricial alopecia in a large area.Methods stage Ⅰ surgery was performed as follows:multiple dilators were chosed and embedded below the galea aponeurotica of the scalp with hair covering according to the bald hair shape,size of the alopecia area.Excessive expansion was conducted for 3 to 6 months to get the extra hair scalp.Stage Ⅱ surgery was as follows:Dilators were removed and scar areas were resected,followed by combined use of sliding advancement flap,rotation flap and translocation flap to repair scalp alopecia.Resluts The postoperative effect of all patients was ideal with satisfied appearance.Conclusions Multiple dilator excessive expansion may obtain a large number of additional expansion scalp,combined by reasonable use of skin flap transfer technology,which can be used to repair the large scarring alopecia and get a good clinical effect.

Objective To explore the surgical method of double flag-shaped flap to correct the shortened middle part of upper lip deformity of post burn.Methods From January 2009 to December 2013,9 cases of shortened middle part of upper lip post burn deformity were corrected by double flag-shaped flap,including 4 males and 5 females who aged from 18 to 37 years.They received the surgery from 1 to 3 years after burn.The main clinical manifestations included the upper lip eversion,too short middle part of upper lip,the destruction of the normal anatomy philtrum,philtrum column deformity and poor continuity vermilion border.Results The height of the middle of upper lip of 9 patients enrolled in the experimental treatment was lengthened by 4 to 6 mm after operation,which fundamentally corrected the shortened middle part of upper lip deformity of post burn.The patients were followed up for a period of 3 months to 2 years and received satisfactory results.The operative incisions of 9 cases were primary healing,with no flap blood supply disorders,wound infection,dehiscence and other complications.Conclusions Double flag-shaped flap of the upper lip at the nostrils bottom is a simple and good effective method to correct the shortened middle part of upper lip deformity of post burn.

Objective To study the clinical efficacy of autologous cartilage following unilateral cleft lip and palate repair on correction of secondary complex deformity.Methods 17 patients with complex secondary cleft palate were enrolled in this study from December 2004 to December 2014.Correction of nasal and lip deformity and oronasal fistula were achieved at the same time.The therapeutic efficacy was evaluated after follow-up from 3 months to 2 years after operation.Results All 17 patients received satisfactory results,of which 14 patients were satisfied and three cases of general satisfaction.Conclusions Satisfactory results are received by using autologous rib cartilage to repair secondary complex deformity of unilateral cleft lip and palate.

Objective To determine the clinical significance of hepatocyte growth factor receptor (Met) and epidermal growth factor receptor (EGFR) in the clinicopathology and prognosis of pancreatic cancer.Methods 70 patients admitted with pancreatic cancer from 1995 to 2005 were retrospectively analyzed with clinicopathological and follow-up data.Expression of Met and EGFR in cancer nest embedded with paraffin were detected by immunohislostaining (EnVision method) and correlation with clinicopathologic parameters and mutual correlation between these two receptors were further analyzed.Prognosis and related risk factors were analyzed by Kaplan-Meier survival analysis and Cox regression analysis,respectively.Results Both Met and EGFR significantly correlated with TNM staging,tumor size and superior mesenteric vessels invasion (P＜0.05).Expression level of Met positively correlated with that of EGFR (r9 =0.658,P＜0.05).Both Met and EGFR significantly correlated with patients' survival (P＜0.05) and Met was an independent prognostic risk factor for pancreatic cancer.Conclusions Both Met and EGFR significantly affect development and prognosis of pancreatic cancer and correlate with each other.Simultaneously targeting both Met and EGFR pathways may provide an advisable strategy of targeted therapy in pancreatic cancer.

Objective To determine the immunogenic and adhesive abilities of a segment (P1C protein) that located at the carboxy terminal region of P1 protein (1125 to 1395 amino acids).Methods A recombinant prokaryotic vector (pGEX6p-2/p1c) was constructed for P1C protein expression in E.coli BL21DE3.The expressed target recombinant protein (rP1C) was identified using SDS-PAGE and Western blot assay,and then extracted by GST-based affinity chromatography.The purified rP1C was used to immunize BALB/c mice to obtain rP1C-antiserum and titer of the antiserum was determined by ELISA.Immunoreactivity of the rP1C to the sera form M.pneumoniae-infected patients was detected using Western blot assay,while activity of the rP1C adhering to HeLa cells as well as adhesion blockage of the rP1C antiserum were detected using indirect immunofluorescence assays.Results The constructed prokaryotic expression system could efficiently express soluble rP1C with a relative molecular weight of 66×103.The antiserum from rP1Cimmunized mice showed an ELISA titer as high as 1:64 000.Both the M.pneumoniae-infected patients' sera and the mouse antiserum against rP1C could recognize as well as combine with the rP1C.rP1C could adhere to HeLa cells and the adhesion could be blocked by the mouse antiserum with an antiserum concentration-dependent manner.Conclusion P1C,a segment of M.pneumoniae P1 protein,possesses powerful immunogenicity and immunoreactivity and cell-adhered activity,indicating the protein segment can be used as an antigen candidate for developing vaccines and serological diagnostic methods of M.pneumoniae-induced diseases.

Objective To observe the clinical effect of edaravone combined with fibrinolysin for treating acute cerebral infarc-tion .Methods 80 cases of acute cerebral infarction were randomly divided into the two groups .The treatment group(40 cases) was treated by edaravone injection 30mg plus normal saline 100 mL by intravenous drip ,twice daily ,fibrinolysin injection 100 U plus 5%glucose injection 250 mL by intravenous drip on 1 d ,subsequently 200U plus 5% glucose 250 mL by intravenous drip from the next day ,for 14 d;the control group(40 cases ) used fibrinolysin alone ,the dose and usage were same to the treatment group .The neuro-logical impairment scale scores(NIHSS) were monitored before and after treatment in the two groups .Results The NIHSS scores and Barthel index on 7 ,14 ,30 ,90 d after treatment in the treatment group were superior to those in the control group (P<0 .05) ,no statistical difference before treatment between the two group existed .Conclusion Edaravone combined with fibrinolysin has better effect for treating acute cerebral infarction .