Animals ; Arginine ; pharmacology ; therapeutic use ; Female ; Male ; Myocardial Ischemia ; drug therapy ; pathology ; physiopathology ; Myocardial Reperfusion Injury ; drug therapy ; pathology ; physiopathology ; Rabbits

Objective To evaluate surgical therapy for recurrent rectovaginal fistula.Methods In this study.two patients were treated by endorectal advancement flap repair and one patient was treated by vascular pedicled segment of small bowel.Results All patients were cured and followed up from 4 to 20 months.During the period of follow-up there was no recurrence.Conclusions The procedures and timing of operation are important factors for a successful repair.Both the endorectal advancement flap and patch of intestine provide an effective methods in repairing recurrent rectovaginal fistula.

Objective:To explore the effects and mechanism of anti IL-9 antibody on malignant ascites ( MA) of hepatic carci-noma in mice.Methods:A mouse model of MA was established by mouse H 22 cell line.45 mice were divided randomly into experi-mental group,negative control group and blank control group at 24 hours after modeling,with 15 mice in each group.The experimental group was injected intraperitoneally with anti IL-9 antibody;the negative control group was injected with isotype IgG antibody;the blank control group was injected with normal saline .The weight and behavior of the mice were measured before each injection .Five mice of each group was sacrificed at 24 hours after the last injection to measure the volume of MA .The level of VEGF,MMP-2,IL-9 and IFN-γin MA were determined with ELISA assay;the survival time of rest mice were recorded and compared .Results:The mean volume of MA of experimental group,negative control group and blank control group were (6.70±1.52)ml,(10.28±1.75)ml,(10.36±2.30) ml,respectively,the MA volume of experimental group were lower as compared to negative control group and blank control group ( P<0.05).The mean survival time of experimental group was (17.2±2.1)d,which was significantly prolonged compared with the negative control group (14.5±1.2)d and the blank control group (14.8±1.4)d (P<0.05).The levels of VEGF of MA in experimental group was significantly lower compared to the negative control group and blank control group (P<0.05).The levels of IL-9 of MA in experi-mental group was significantly lower compared to the negative control group (P<0.05).The levels of MMP-2 and IFN-γin experimental group had no significant difference compared with the negative control group and blank control group ( P>0.05 ) .Conclusion:Intraper-itoneal injection anti IL-9 antibody on H22 ascites-bearing mice can effectively inhibit the generation of the MA .The mechanism may be related to the inhibition of the expression of the VEGF and IL-9.

Objective To investigate the expression of Circulating tumor cells ( CTCs ) in peripheral blood cells of patients with different stages of Small-Cell Lung Cancer ( SCLC) ,and to evaluate its significance in early diagnosis of lung cancer metastasis.Methods Thirty-five patients with SCLC ( 12 in limited stage and 23 in extensive stage ) and 25 patients with benign lung disease were recruited at the Shanghai Changhai Hospital from April 2011 to April 2013.Samples were prepared from 7.5 ml peripheral venous blood and collected in CellSave tubes.The CTC counts were determined using CellTracks AutoPrep fluorescence scanning system according to the manufacturers′instructions.The expression of CTCs in peripheral blood of SCLC patients and benign lung disease patients were analyzed.The expression of CTCs in different stages of SCLC was measured and compared.Furthermore, samples were prepared from 2 ml peripheral venous blood by centrifugation.The serum levels of NSE Neuron specific enolase were measured.The relationship between the expression of CTC and NSE was analyzed.Results CTCs positive rates in SCLC were significantly higher than in benign lung disease controls [ Positive rates of CTC≥1 were 80.0%and 12.0%(χ2 =27.003,P<0.000 1),CTC≥5 were 51.4%and 0 (χ2 =18.367,P<0.000 1), CTC≥10 were 34.3%and 0(χ2 =10.714,P<0.001),CTC≥50 were 17.1 and 0(P=0.036,P<0.05), respectively ].CTCs positive rates in SCLC extensive stage were significantly higher than limited-stage [Positive rates of CTC≥1 were 58.3% and 91.3%(P=0.033,P<0.05), CTC≥5 were 65.2% and 25.0%(P=0.035,P<0.05), respectively].The expression of CTCs was significantly correlated with NSE (r=0.743 7, P<0.000 1).Conclusion The expression of CTC in SCLC patients is significantly higher than those in control group , and is closely related to clinical stages , which may provide new clues to early predicting of SCLC metastasis and deterioration.

Objective To evaluate the effects of combination of dexmedetomidine and mild hypothermia on global cerebral ischemia-reperfusion (I/R) injury in neonatal rats.Methods Ninety-six neonatal Sprague-Dawley rats,aged 6-7 days,weighing 18-22 g,were randomly divided into 4 groups (n=24 each) using a random number table:I/R group,mild hypothermia group (group H),dexmedetomidine group (group D) and combination of dexmedetomidine and mild hypothermia group (group DH).Global cerebral ischemia was induced in rats anaesthetized with chloral hydrate by bilateral common carotid artery clamping (for 15 min) combined with hypotension followed by reperfusion.Dexmedetomidine 75 pg/kg was given intraperitoneally at 30 min before ischemia in D and DH groups,while the equal volume of normal saline was given in I/R and H groups.The temperature in the temporal muscle was maintained at 36.7-37.2℃ in I/R and D groups,and at 34.8-35.3℃ in H and DH groups.At 12,24 and 72 h of reperfusion,8 rats were randomly chosen in each group,and neurological deficit score (NDS) was determined.The animals were then sacrificed,and their brains were removed for determination of myeloperoxidase (MPO) activity (by spectrophotometry) and contents of tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) in brain tissues (using ELISA).Results Compared with I/R group,the NDS,MPO activity and contents of TNF-α and IL-6 were significantly decreased in the other three groups.The NDS,MPO activity and contents of TNF-α and IL-6 were significantly lower in DH group than in H or D group.Conclusion Dexmedetomidine can optimize cerebral protection providedby mild hypothermia against global cerebral I/R injury through inhibiting inflammatory responses in brain tissues of neonatal rats.

Objective To investigate the effect of maternal deprivation (MD) on neurobehavior and PP1Cγgene expression in hippocampus. Methods Male pups were randomly divided into MD group(thirty-five)and control group(twenty-four). From PND 1 to PND 21 ,pups in the MD groups underwent daily maternal deprivation for 3 h ( Postnatal day). Neurobehavior was observed to investigate neurodevelopment, Morris water maze was used to measure spatial learning and memory,and Real-Time quantitative PCR was employed to analyze PP1Cγ gene expression. Results Several significant deficiencies were observed in bodyweight and grasping reflex while a great enhancement in hot-plate test in rat pups suffering from MD( (26.23 ± 2.81 )g vs. (30. 38 ± 3.85 )g;( 19.37 ± 11.89) s vs. (22.39 ± 17.62 ) s; (4.36 ± 1.76 ) s vs. ( 5.26 ± 2.55 ) s; P ＜ 0. 05 ), but deficiencies in neurological reflexes were subtle ( ( 0.83 ±- 0.30 ) s vs. ( 0. 83 ± 0. 34 ) s; ( 3.68 ± 1.63 ) s vs. ( 5.61 ± 3. 01 ) s;( 3.00 ± 0.00 ) vs. ( 3.00 ± 0. 00); P ＞ 0. 05 ). MD had a subtle influence on spatial learning and memory (P ＞0.05). Meanwhile,MD could lead to PP1Cγ expression down-regulation on PND 22 ( (2.19 ±0.62) vs. (3.52 ±0.86), P＜0. 05)which was in line with early neurobehavior results. No difference was found compared with MD group and control group on PND60 ( ( 1.73 ± 0. 78 ) vs. ( 1.33 ± 0. 34); P ＞ 0.05 ). However, there was the up-regulation of PP1Cγexpression on PND 90 ( (2.85 ± 0. 34) vs. ( 1.34 ± 0.93 ); P ＜ 0.05 ). Conclusion MD alters early neurobehavior and hippocampal PP1Cγgene expression in the Wistar rats,but has a subtle effect on learning and memory. At the same time,MD can make PP1Cγexpression in the hippocampus varying with the age.

Objective To explore the efficacy and adverse reaction of nedaplatin (NDP)+gemcitabine (GEM)and cisplatin (DDP)+GEM for advanced lung squamous cell carcinoma.Methods A total of 1 01 cases advanced untreated patients from September 201 2 to December 201 3 were randomly divided into 2 groups using random number table method:69 patients in the observation group accepted NDP+GEM treatment and 32 patients in the control group received DDP +GEMtreatment.The objective response rate (RR),disease control rate (DCR ) and progression-free survival (PFS ) and adverse reaction were collected and evaluated. Results RR was 28.6%(1 8/63)in the observation group and 1 5.6%(5/32)in the control group,DCR was 81 .0%(51/63)in the observation group and 68.8%(22/32)in the control group (χ2 =1 .36,P=0.24;χ2 =1 .67,P=0.20).The median PFS was 4.52 months and 4.01 months in the observation group and control group (χ2 =0.09,P=0.73).The major adverse reaction was myelosuppression in both groups (33.3% vs.37.5%,χ2 =0.1 7,P=0.68).The incidence ofⅢ-Ⅳ grade nausea and vomiting was lower in the observation group, compared with the control group (1 4.5%vs.56.3%,χ2 =1 9.02,P=0.05).Conclusion NDP combined with GEM in advanced lung squamous cell carcinoma of the first-line treatment has equivalent efficacy to DDP+GEM, with lower incidence of adverse reaction,which is worthy of further dissemination of research.

Objective:To investigate the effects and mechanisms of interleukin-22(IL-22) on inhibiting liver fibrosis induced by HSC,and explore the role of Wnt/β-catenin pathway in the activation of hepatic stellate cells(HSC).Methods:Rat HSC was activated by TGF-β1,and the mRNA and protein levels of β-catenin and α-SMA were detected by q-PCR and Western blot,respectively.HSC was treated with different hours and concentration of recombinant rat protein IL-22.The cell proliferation rates were detected by CCK8,cell apoptosis rates were tested by flow cytometry.HSC were treated with optimal concentration of IL-22 after activated by TGF-β1,the cell proliferation rates,mRNA and protein levels of β-catenin and α-SMA were compared of before and after intervention.Results:The mRNA and the protein levels of β-catenin and α-SMA were significantly increased after activated by TGF-β1(P<0.05).IL-22 inhibiting the proliferation of HSC in a dose-and time-dependent manner (P<0.05) and decreased the mRNA and the protein expression level of β-catenin and α-SMA(P<0.05),but had no significant effect on apoptosis rates(P>0.05).IL-22 significantly inhibited the activation of HSC induced by TGF-β1 and remarkably decreased the mRNA and the protein expression level of β-catenin and α-SMA(P<0.05).Conclusion:The Wnt/β-catenin pathway may participates in the process of HSC activation and α-SMA secretion,and IL-22 inhibits biological function of HSC in a dose-and time-dependent manner.This effect probably via inhibited the Wnt/β-catenin signal pathway.

Objective To investigate the effect of Jagged1 on hippocampal radial glial cells (RGCs) proliferation and neuronal differentiation in vitro.Methods Hippocampal RGCs were cultured in vitro, the agonist Jagged1 and(or) inhibitor DAPT of Notch signaling were added into the culture medium , and then the cells were divided into control group , Jagged1 group, Jagged1 combined with DAPT group and DAPT group .CCK-8 regent was used to detect cells ’ vitality;immunofluorescent was used to detect the number of BLBP /Ki67 double labeled cells and differentiated microtubule associated protein-2(MAP-2) positive cells.Results Cell vitality in Jagged1 group was obviously higher than that of the other groups .The number of BLBP/Ki67 double labeled cells and differentiated MAP-2 positive cells were more than other groups.Conclusion Jagged1 promotes the proliferation and neuronal differentiation of hippocampal RGCs in vitro.

Background Biometry of the anterior ocular segment parameter is very important for the diagnosis and treatment of glaucoma and ocular injury as well as measurement of intraocular lens(IOL).Objective This study was to compare the differences in the anterior chamber depth(ACD) and the central corneal thickness (CCT) between Sirius and Pentacam and evaluate the agreement of these two measurement methods.Methods The ACD and the CCT of 38 right eyes from 38 health volunteers aged 23- 32 years were measured with both Pentacam and Sirius.Three times of measurement were pedormed on each eye for each method to obtain the average values.The repeatability and agreement from each method were assessed as intraclass correlation coefficient( ICC ) and coefficient of variation(CV) and the agreement between these two methods were evaluated using Bland-Altman mode.ResultsThe mean ACD value was( 3.18±0.21 ) mm from Pentacam with the ICC 0.995 and CV 0.066.The mean ACD value from Sirius was (3.22 ±0.21 )mm with the ICC 0.996 and CV 0.065.The difference value in ACD between two methods was 0.04 mm,showing a significant difference( t =-6.225,P＜0.05 ) and a positive correlation (r=0.977) between two methods.The 95％ limit of agreement was( -0.04-0.13)mm within 1 standard difference (SD) of the mean value( ±0.21mm),which was acceptable for clinical measurement.The CCT was( 535±33 )μm from Pentacam with the ICC 0.994 and CV 0.062.The CCT was(537±36)pm from Sirius with the ICC 0.999 and CV 0.067.The difference value in the CCT between two methods was about 2 μm,presenting a in significant difference ( t =1.771,P＞0.05 ) and positive correlation ( r =0.985 ).The 95 ％ limit of agreement was ( - 11.64-15.65 ) μm within 1 SD of the mean value( ±34.27 pm),which was acceptable for clinical measurement.ConclusionsSirius and Pentacam show good agreement in the measurement of ACD and CCT.The two methods offer an alternative choice for the biological measurement of the anterior ocular segment.