Immunoregulatory effects of leptin on inflammatory bowel disease / 中华微生物学和免疫学杂志

Inflammatory bowel disease (IBD) is a chronic and recurrent disease characterized by chronic inflammation of the gastrointestinal tract. The quality of life of patients with IBD is seriously affected. The pathogenesis of IBD is complex, among which immune factors are considered to be the predominant factor. Leptin is a hormone derived from adipocytes and recent studies have shown that it is involved in the regulation of immune cells and inflammatory signaling pathways. This review summarized the pathogenesis of IBD, the immunoregulatory mechanism of leptin and research progress in immune modulators, introduced the potential effects of leptin on the regulation of immunological homeostasis in IBD and its potential roles in the etiology and pathogenesis of IBD, and discussed a possible immunotherapy method to treat IBD through leptin antagonist to reduce the inflammatory response and inhibit the inflammatory signaling pathways.

The nursing practice in the work of civil cardiac death organ donation / 中国实用护理杂志

Objective To investigate the role of nurses in civil cardiac death organ donation work.Methods Cooperating,propagating and promoting in civil cardiac death organ donation; building a bridge between the families of organ donation,donor coordinators,physicians and hospital ethics committees; participating in organ donation medical ethics assessment work; cooperating with the doctors do intend to maintain organ donation,access and preservation; protecting donors remains.Results During the time of July 2011 to November 2013,we successfully completed 52 cases of civil cardiac death organ donation cooperating with doctors,and got 41 liver,which entered the national organ allocation system for distribution.Conclusions The nurses will play a more and more important role in work of civil cardiac death organ donation cooperating with doctors.

Rat ADSCs transfected by lentivirus vector-mediated enhanced green fluorescent protein / 中华显微外科杂志

Objective To explore the labeling method of rat adipose-derived stromal cells,and observe the stem cell characteristics and the activities of EGFP-positive adipose-derived stromal cells (EGFP-ADSCs) in vitro and in vivo.Methods ADSCs were transfected for 12 h with enhanced green fluorescent protein gene (EGFP) carried by lentivirus(Lv-EGFP) vector at different value of MOI (0,5,10,25,50,100,respectively).The rate of EGFP expression and fluorescence intensity were evaluated by flow cytometric analysis and fluorescence microscopy,and cell viability was detected by MTT-test after transfection.Secondly,cells were exposed either to adipogenic medium or osteogenic medium,then stained with Oil Red O and Alizarin Red S.Cell growth was investigated on frozen longitudinal sections when EGFP-ADSCs were injected into acellular nerves to build tissue-engineered peripheral nerves repairing sciatic nerve defects in rats for 1 week in vivo.Results EGFP-positive rate and fluorescence intensity peak at 4 days after transfection.The rate of EGFP expression was 0.13％,31.09％,75.33％,92.66％,96.70％,98.38％ for MOI =0,1,5,25,50,100,respectively.The positive rate between the experimental group and control (MOI =0) existed significantly difference (P ＜ 0.05) ; the difference between MOI =1,5 groups and MOI =25,50,100 groups were also observed (P ＜ 0.05).There was no statistical difference in EGFP-positive rate and cell proliferation activity among MOI =25,50,100 groups (P ＞ 0.05).MOI =25 was chosen as best scheme to transfect ADSCs for subsequent experiments.Osteogenic and adipogenic differentiation for 20 days,orange calcium deposits,orange-red lipid droplets were seen in EGFP-ADSCs after Alizarin red and oil red O staining.At 1 week in vivo,EGFP-ADSCs evenly distributed and became fusiform on frozen longitudinal sections.Conclusion Lv-EGFP transfection does not affect the ADSCs activity and their osteogenic and adipogenic differentiation,so could be as a tracing method for ADSCs-tissue-engineered peripheral nerves repairing nerve defects.

Experimental study of preparing acellular human tendon scaffold by chemical extraction methods / 中华显微外科杂志

Objective To explore a method of preparing the acellular tendons of human with chemical approaches.Methods From April 2011 to June 2012,several treatments were performed on human tendons using 1.00％ tri(n-butyl) Phosphate (TnBP) combinded with Triton X-100 at the concentration of 0,0.25％,0.50％,1.00％ respectively.Specimens were examined using histological observation,scanning electron microscopy,biomechanical testing and hydroxyproline quantitation.The results were then compared with fresh tendons of control group,so as to value the characteristics of decellularized human tendon scaffold.Results Acellular human tendons had glossy surface,intact aponeurotic membrane and satisfactory flexibility.A small number of disrupted cells remained in the 1.00％ TnBP + 0％ Triton X-100 treated tissue,while other three experimental groups successfully eliminate all cells.Intact and regular collagen architecture was retained in 1.00％ TnBP +0.25％ Triton X-100 treated tissue.1.00％ TnBP + 0.50％ Triton X-100 and 1.00％ TnBP + 1.00％ Triton X-100 treated tissue were nearly identical to 1.00％ TnBP +0.25％ Triton X-100 treated tissue,but the interval of collagen was slightly wider than the control group,the maximum load (385.22 ± 80.32N,398.22 ± 127.20N),ultimate tensile strength(46.69 ± 16.30Mpa,46.20 ±5.52Mpa) and hydroxyproline content(0.282663 ± 0.0110109 μg/mg,0.279355 ± 0.0102129 μg/mg) were statistically lower (P ＜ 0.05) compared with those of the control group,maximum load(533.28 ± 135.77N),ultimate tensile strength (65.56 ± 14.40Mpa) and hydroxyproline content (0.292882 ± 0.0100988 μg/mg) respectively.Conclusion The decellularization treatment with 1.00％ TnBP + 0.25％ Triton X-100 could be optimized for preparing acellular human tendons.

The expression and clinical significance of β tubulin Ⅲ in locally advanced cervical cancer / 中国医师进修杂志

Objective To investigate the expression and chnical significance of β tubulin Ⅲ in locally advanced cervical cancer (LACC).Methods The expression of β tubulin Ⅲ in tumor tissue of 47 patients with LACC was detected by immunohistochemical SP method.The relationship between expression of β tubulin Ⅲ and neoadjuvant chemotherapy (NACT) with paclitaxel,clinical data were analyzed retrospectively.Results The response rate of NACT was 72.3％ (34/47).The β tubulin Ⅲ positive expression rate was 72.3％(34/47),(+) expression rate was 40.4％(19/47),(++) expression rate was 12.8％(6/47),(+++) expression rate was 19.1％(9/47).The response rate of NACT in patients with (++) and (+++) expression was significantly lower than that in patients with (-) and (+) expression [46.7％(7/15)vs.84.4％ (27/32),P =0.007].The expression of β tubulin Ⅲ was related to pathological grade (P =0.021),it was not related to pathological type,clinical stage,status of lymph node metastasis (P =0.822,0.336,0.839).Conclusions The NACT of paclitaxel combined with cisplatin is effective to LACC.The abnormality expression of β tubulin Ⅲ in LACC tissue relates to drug resistance of paclitaxel and biological behavior of cervical cancer,it may be an index to predict prognosis of cervical cancer.

Effect of trauma emergency care related factors on length of ICU stay / 中华创伤杂志

ObjectiveTo investigate the effect of factors correlated with trauma emergency care system on the length of ICU stay and figure out independent risk factors of prolonged ICU stay. Methods A total of 1 361 trauma patients admitted to the ICU of five tertiary hospitals in Zhejiang province in 2009 were retrospectively studied.Demographic data,time of ICU stay and variables related to trauma care were collected.Logistic regression was performed to determine the independent risk factors of prolonged ICU stay ( ≥ 15 days). ResultsOverall,192 trauma patients ( 14.1％ ) had a prolonged ICU stay ( ≥15 days).Single factor analysis indicated that ISS≥ 16 points,GCS≤7 points,blunt trauma,prehospital emergency care,length of emergency department stay ≥4 hours,mechanical ventilation and central venous pressure monitoring were associated with the prolonged ICU stay.Multivariate analysis showed that pre-hospital emergency care was a protective factor for the prolonged ICU stay( ≥ 15 days) and that mechanical ventilation,length of emergency room stay≥4 hours and ISS≥ 16 points were the independent risk factors for the prolonged ICU stay ( ≥ 15 days).Conclusions Pre-hospital emergency care and ICU care show significant influence on the length of ICU stay.Furthermore,shortened length of emergency department stay is also contributive to reduced length of ICU stay.

Value of trauma and injury severity score in predicting mortality of trauma patients in different rank hospitals / 中华创伤杂志

ObjectiveTo evaluate the trauma care effect and the value of trauma and injury severity score (TRISS) in prediction of the mortality by using TRISS to calculate the survival probability of trauma patients in five hospitals from Zhejiang province in 2009.MethodsA retrospective study was done on trauma patients (study group) firstly admitted to Emergency Department of five hospitals from Zhejiang province in 2009.The relevant information was collected,including demographic data,trauma types and injury causes.The TRISS score was obtained through calculating injury severity score (ISS) and revised trauma score (RTS) on admission into emergency department.With the major trauma outcome study (MTOS) as control group,M value,standardized Ws value and 95％ confidence interval (CI) were calculated to compare actual survival rate and anticipation survival rate.ResultsA total of 2 193 patients at mean age of 44.39 years were enrolled in the study,including 1 661 male patients (75.74％).Traffic accident injury was the most common,followed by fall injury.The mortality rate according to TRISS was 13.22％,but the actual mortality rate was 9.75％.For all the patients,M =0.80 indicated that the injury severity of the study group was significantly different from that of the control group.At the same time,Ws =2.15,95％ CI for Ws:1.54-2.77 showed that the actual survival rate of the study group was significantly higher than that of the control group.Besides,the survival rate of trauma patients in the affiliated hospitals and three hospitals at class A grade was significantly higher fian that of the control group,but there was no significant difference between three hospitals at class B grade and control group. ConclusionsTRISS overestimates the mortality of the study group,which is probably associated with the rapid development of traumatology and the old coefficients of TRISS.Setting up local trauma database and renewing coefficients of TRISS may improve the ability of TRISS in predicting mortality of the trauma patients.

Risk factors for nosocomial infection in trauma patients during intensive care unit stay / 中华急诊医学杂志

Objective To determine risk factors in nosocomial infection of trauma patients during intensive care unit stay. Methods A retrospective study was carried out. A total of 1103 trauma patients admitted to the intensive care unit of five tertiary hospitals in Zhejiang Province in 2009 were reviewed. Demographic data, injury severity score and other variables related to the trauma services were collected. Univariate and multivariate analysis were processed to identify the independent risk factors of nosocomial infection in trauma patients during stay in intensive care unit. Results Overall, 171 patients( 15.5% )developed nosocomial infection during ICU stay. Of 1103 patients, 157 patients (14.2% ) died, and the 59 fatal patients were from infection group. The mortality rate in infection group was 34.7% , which was significantly higher than that in non - infection group (10.5% ). The independent risk factors of nosocomial infection in all the patients determined by using multivariate analysis included central venous monitoring, mechanical ventilation, age ≥65, the length of ICU stay > 14 days and injury severity score ≥ 16. For the severe trauma patients, central venous monitoring, mechanical ventilation, the length of ICU stay > 14 days were independent risk factors of nonsocomial infection. Conclusions The severity of injury, age, the length of ICU stay and invasive procedures were related to the nosocomial infection. To standardize the invasive procedures and to reduce the length of ICU stay may decrease the infection rate of trauma patients.

An analysis of the risk factors in the mortality of casualties: data from eight hospitals in Zhejiang province / 中华急诊医学杂志

Objective To explore risk factors in the mortality of casualties and to find a way to improve trauma emergency service. Method The possible factors likely related to the mortality of casualties were taken into account based on each stage of trauma emergency so as to find the independent risk factors by using univariate and multivariate analyses. Results A total of 3 659 casualties were enrolled in this study.Of them, 226 casualties died and the mortality rate was 6.18%. Following factors were related to mortality after univariate analysis: age, cause of trauma, injury severity score, Glasgow come scale come on the scene, professional emergency treatment on the scene, intubation in the ambulance, debridement and hemostasis in the ambulance, low blood pressure at admission, closed drainage of pleural cavity, emergency operation, CVP monitoring in ICU and mechanical ventilation in ICU. After multivariate analysis, six factors were independently related to the mortality of casualties as follows: Glasgow coma scale, injury severity score, mechanical ventilation, blood pressure at admission, age and professional emergency treatment on the scene. Conclusions It has a great significance to investigate the risk factors of mortality for casualties. Severity of trauma and age were independently associated with the outcomes of trauma. Besides, improving prehospital care and stabilizing the trauma patients in early phase can further decrease the mortality.

Clinical research of functional reconstruction with BTA for treatment on equinovarus foot of spasitic cerebral palsy / 中华显微外科杂志

Objective To observe the clinical therapial value of functional reconstruction with Botulinum Toxin A (BTA) on spasitic cerebral palsy. Methods Thirty-two patients were treated by Achilles tendon lengthening and anterior transfer of posterior tibial tendon.According to the spasticity of triceps surae muscle,all cases were arranged by BTA injection 2 months later after operation.Results From Jan.2000 to Jan.2009,thirty-two cases with equinovarus foot of spasticitical cerebral palsy were collected,the muscle strength of ankle dorsal extensor increased from 0-2 grades to 4-5 grades,there was significant difference between preoperational muscle strength and postoperational one.There was also significant improvement to adjust yarus degrees of ankle joint.the musclar tension of triceps muscle of calf decreased from Ⅱ-Ⅳ grades to Ⅰ-Ⅱ grades. Conclusion Anterior transfer of posterior tibial tendon corresponding with Botulinum Toxin A injection not only release muscle spasticity but also improve dorsal extending strength of ankle joint.The clinical effect of these methods was reliable on cerebral palsy.

Analytical study of human allogenic acellular peripheral nerve in standard preparation methods / 中华显微外科杂志

@#Objective To analyze five kinds of allogenic acellular peripheral nerve by different meth-ods and try to establish a standard method for preparing nerve materials. Methods Five kinds of nerve ma-terial prepared by different chemical extractions according to nowaday articles were examined by HE staining. Irmnunohistochemistry and protein ratio was studied by allogenic nerves by virtue of Kjeldahl method in order to know the efficiency of these methods in removal of SCs axons and integrality of the basilar membrane. Results Myelin sheath and cytoblast in group 2 that nerves were extracted by Triton X-100 and Sodium de-oxycholate consecutively twice were completely removed, which was well demonstrated in HE staining. Per-ineurium in red staining were arranged wave-like longitudinally, axons and myelin sheath were replaced by column-like spacing. Col I staining were positive in all groups, structure of basilar membrane became loose slightly in the first and second group, and the structure of the other groups were relatively regular. Group 1 and 2 were negative in S-100 staining. There was no difference between group 2 and group 1,3,4 and 5 in sheath removal demonstrated by TEM. Protein ratio in group 2 was the lowest in the measurement with Kjel-dahl method. Conclusion The method used in group 2 that nerves were extracted by Triton X-100 and Sodium deoxycholate consecutively twice was the best in allogenic acellular peripheral nerve preparations.

A controlled study between central venous catheter and conventional chest tube for closed pleural drainage in the treatment of traumatic hemothorax / 中华急诊医学杂志

Objective To evaluate file efficacy and safty of central venous cathetr compared with conventional chest tube for closed pleural drainage in the treatment of traumatic hemothorax Method Totally 299 patients of traumatic hemothorax with middling or large effusions,in emergency department,Second Hospital .Affiliated to Medical College of Zhejiang University,from January 2003 to May 2007,were prospective controlled studied.All the 299 patients of were divided into catheter group (n=156) or tube group(n=143) according as patients'hospitalization date was odd or even number respectively.Patients in catheter group underwent drainage by central venous catheter using the Seldinger technique,and patients in tube group did by conventional chest tube using conventional technique.A unue drainage bag system or a wate seal system was connected with the end of the catheter or the tube respectively.The surgical operation time,the successful rate of treatment,the occurreuce rate of serious complications,the using rate of anodyne,the time of cut concrescence and the occurrence rate of cut infection were compared,and the drainage time and the correlative expenses in patients treated successfully were further compared.The data were analyzed by using t or X2 test with SPSS 13.0.A P value less than 0.05 indicated statistical signficance.Results Compared with robe group,the surgical operation time,the using rate of anodyne,the time of cut concrescence and the occurrence rate of cut infection were significantly decreased(P<0.05) in catheter group.There were not significant differences between two groups in the suecessful rate of treatment and the occurrence rate of serious complications(P>0.05).There were not significant differences between two groups in the drainage time and the corrective expenses of patients treated successfully(>0.05).Conclusions Use of central venous catheter catheters for closed pleural drainage in the treatment of traumatic hemothorax is effective,safe,and well-tolerated.It was more simple and less invasive as a procedure compared with conventional large-bore chest robe.

OBSERVATION OF GASTRIN AND SUBSTANCE P IN THE NERVOUS SYSTEM OF INTESTINE IN PATIENTS WITH DELAYED MOTOR CONSTIPATION / 中国普外基础与临床杂志

Objective To study the neuropathological changes of gastrin and substance P(SP) in the intermuscular and submucous nerve plexus of the colonic walls in patients with delayed motor constipation(DMC). Methods Gastrin and rabbit SP polyclonal antibiotics were used to make an immunohistochemical staining of the samples of different segments obtained from 10 patients with DMC and 8 normal subjects(control group) for a comparative observation as well as a relative semi-quantitative analysis. Results The immune positive nerve cells of gastrin and SP in the intermuscular nerve plexus of colon with DMC were markedly reduced; no differences in the immune response of gastrin and SP in the mucous nerve plexus were found between the two groups(P＜0.01). With routine HE staining, focal inflammation occurred in the mucous membrane of DMC colon and that the neuronal vacuolus of the intermuscular nerve plexus degenerated, reduced and even disappeared. Conclusion The abnormal changes of the neural structure in the immune reponse of gastrin and SP in the intermuscular nerve plexus of colon with DMC might be related to reduction of gastrin and SP peptide neuron or dysfunctional.

Effect of autologous bone marrow mononuclear cell local transplantation on peripheral neovascularization / 中国病理生理杂志

AIM: To investigate the effect of autologous bone marrow mononuclear cells (BM-MNCs) local transplantation (BM-LT) on a rabbit model of hindlimb ischemia. METHODS: After unilateral femoral artery and its branches were surgically ligated and excised in rabbits (n=14) 1 hour or so, autologous BM-MNCs were injected into the ischemic skeletal muscles in 7 rabbits, and phosphate buffered saline for another 7 ones as control. Hemodynamics parameters were measured at day 0, day 7 and day 28, respectively. On day 28, the animals were sacrificed in groups for pathological analysis. RESULTS: Compared with control group, color Doppler flow image in BM-LT group was recovered significantly, and its' systolic peak velocity and end-diastolic velocity were also improved (P

Relationship between RUNX3,cyclin E,P21 and survival in gastric cancer patients / 中国病理生理杂志

AIM:To evaluate the relationship between RUNX3,cyclin E,P21,biological features and survival in gastric cancer patients.METHODS:RUNX3 was examined using immunohistochemical staining.Cyclin E and P21 were analyzed by flow cytometry.Survival was evaluated by Kaplan-Meier survival curves.RESULTS:The positive-expression rate of RUNX3,cyclin E and P21 in tumor tissue from 56 patients with gastric cancer were 44.6%,64.3% and 32.1%,respectively.RUNX3 expression was correlated with lymph node metastasis and distant metastasis(P0.05).Using Kaplan-Meier survival curves and the Log-rank test,there was correlation between RUNX3,cyclin E and survival(P0.05).CONCLUSION:RUNX3 may be related with tumorigenesis and tumor progression by affecting P21 expression.The detection of RUNX3 and cyclin E may be helpful in evaluating the clinicopathological parameters and prognosis in gastric carcinoma patients.

~(32)P-POSTLABELING TEST OF DNA ADDUCTS FORMED IN THE LIVERS OF RATS TREATED WITH CARCINOGEN / 西安交通大学学报(医学版)

DNA in the livers of rats was isolated 24 h af-ter oral administration of benzidine, Congo red andEvan's blue, DNA adducts in the livers of ratswere investigated by a ~(32)P-postlabeling assay. Thelevel of DNA adducts in the livers of rats after oraladministration of benzidine, congo red andEvan'blue were 18. 17, 1. 03 and 1. 74?mol/kgDNA respectively. The results showed that themetabolites of the benzidine derivative azo dyes canform adducts with DNA in the livers of rats.These DNA adducts probably are one of the rea-sons that the incidence of the bladder cancer rosein the people group who are only exposed to benzi-dine derivative azo dyes.