Background:Colorectal cancer is one of the commonly seen malignant tumors in digestive system. Most patients with colorectal cancer were diagnosed in advanced stage and the prognosis is poor. Early diagnosis is crucial to improve the overall survival of patient. Currently,molecular markers for diagnosis of colorectal cancer has attracted more and more attention of the investigators. Aims:To investigate the expression and significance of Rab5A in colorectal cancer. Methods:Colorectal cancerous tissue and the paired para-cancer noncancerous tissue of 135 patients who underwent resection for colorectal cancer were collected. Expression of Rab5A mRNA in cancerous tissue,para-cancer noncancerous tissue,colon cancer cell lines HCT116,HT-29,LoVo and SW480 and normal colonic epithelial cell line NCM460 was determined by real-time PCR. Protein expression of Rab5A in cancerous tissue and para-cancer noncancerous tissue of 4 patients was detected by Western blotting. Protein expression of Rab5A in cancerous tissue of 110 patients was detected by immunohistochemistry. Correlations between expression of Rab5A and clinicopathological characteristics and prognosis of colorectal cancer were analyzed. Results:Expression of Rab5A mRNA in cancerous tissue was significantly higher than that in para-cancer noncancerous tissue(P=0. 003). Expression of Rab5A mRNA in colon cancer cell lines HCT116, HT-29,LoVo and SW480 was significantly higher than that in normal colonic epithelial cell line NCM460(P﹤0. 05). Protein expression of Rab5A in cancerous tissue was significantly higher than that in para-cancer noncancerous tissue. In 110 cancerous tissues,51(46. 4%)had low expression of Rab5A and 59(53. 6%)had high expression of Rab5A. Protein expression of Rab5A was significantly correlated with tumor size,serum carcinoembryonic antigen(CEA)level and TNM stage(P =0. 008;P =0. 002;P =0. 010). 3-year survival rate of patients with high Rab5A expression was significantly lower than that of patients with low Rab5A expression(52. 1% vs. 77. 5%,P ﹤0. 05). Rab5A protein expression,serum CEA level and TNM stage were correlated with the prognosis of patients with colorectal cancer( P =0.009;P =0. 006;P =0. 017)and were independent factors for prognosis(P =0. 026;P =0. 032;P=0. 014). Conclusions:Expression of Rab5A correlates with the malignant behavior of colorectal cancer and its high expression indicates a poor prognosis. Rab5A might be used as a predictor for prognosis of colorectal cancer.

Purpose To compare the CT features of hepatic metastases of gastro-entero-pancreatic adenocarcinomas with and without neuroendocrine differentiation [NED(+) and NED(-)] and to explore the value of CT features in differentiation of the two groups.Material and Methods From January 2009 to December 2015,abdominal CT scans of 17 pathologically proved cases of NED(+) gastro-entero-pancreatic adenocarcinomas with hepatic metastases and 34 pathologically proved cases of NED(-) hepatic metastases with sex,age and primary site matched were retrospectively reviewed.CT features including hepatic metastases number,size,distribution,shape and enhancement were assessed,as well as presence of lymphadenopathy or ascites.Differences of CT features between the two groups were analyzed.Results Compared with NED(-) group,hepatic metastases of NED(+) group more frequently demonstrated a peripheral enhancement on artery phase (94.1％ vs.44.1％,P＜0.05),and more washout on portal venous phase (41.2％ vs.5.9％,P＜0.05),while hepatic metastases of NED(--) group showed more plateau type (91.2％ vs.58.8％).There was no significant difference of other findings between the two groups (P＞0.05).Logistic regression revealed that enhancement area in hepatic artery phase and enhancement changes in portal venous phase were independent factors for differential diagnosis (P＜0.05).The area under the ROC curve of combining the two features was 0.811 (P＜0.05).Conclusion There are some different CT enhancement features between NED(+) and NED(-) hepatic metastases of gastro-entero-pancreatic adenocarcinomas,which are helpful in differential diagnosis.

Objective To explore the guidance significance of the functional MRI and DTI (fMRI ,DTI) ,intraoperative ultra-sound(IOUS) ,neuronavigation ,electrocorticography(EcoG) monitoring used in surgical treatment of low-grade gliomas with epi-lepsy as main symptom located near the eloquent brain regions .Methods 23 neurosurgical patients in the First Affiliated Hospital of Chongqing Medical University during 2009-2010 were performed the retrospective analysis .The preoperative fMRI ,DTI deter-mined the positional relation between the lesions with the conduction bundle and the eloquent brain regions ,the electrophysiological and imageological examinations positioned the epileptogenic focus and lesions ,the MRI-mediated neuronavigation system was adopt-ed to formulate the surgical plan and choose the best surgical approach ,IOUS was used to perform the realtime monitoring for pre-cisely positioning the lesion range and determining the extent of resection ,and the intraoperative EcoG was adopted to determine the epileptogenic focus localization ,the lesions and the epileptogenic focus was dealed by the operating microscope for avoiding the func-tional region ,and the patient′s prognosis was evaluated and recored in detail after operation .Results By the precisely positioning the lesions and epileptogenic focus by fMRI ,DTI ,neuronavigation and ultrasound ,the lesion resection degrees by the operative mi-croscope and intraopertaive pathological guidance were 17 cases of Ⅰ-Ⅱ grade ,4 cases of Ⅲ grade and 2 case of Ⅳ-Ⅴ grade .1 case of motor aphasia ,4 cases of hemiplegia and monoplegia and 1 case of disturbance of consciousness after operation were improved by the treatment of neurotrophy ,dehydration and hyperbaric oxygen and discharged from hospital with rehabilitation .No death case occurred .The evaluation of the life quality :20 cases ofⅠ-Ⅱ grade ,3 cases of Ⅲ grade and no vegetable survival case of Ⅳ grade . The evaluation of resection clinical effect :20 cases of cure ,3 cases of improvement ,no case of as before and exacerbation .After fol-lowed up for 6-24 months ,according to Engel classification of seizure efficacy assessment :Ⅰ-Ⅱ grade in 21 cases ,Ⅲ grade in 2 case ,no case of Ⅳgrade .Conclusion fMRI ,DTI ,neuronavigation ,IOUS and EcoG for guiding the operation of low grade gliomas located near the eloquent brain regions can resect the lesion to the largest extent and simultaneously deal with epileptogenic focus , effectively protect the neurological function of the functional region ,greatly reduce the side-injury of the normal brain tissues in the functional region ,at the same time increase the curative effect of symptomatic epilepsy .

Objective To discusses the clinical significance of XRCC1 399 and TYMS 5'-translation section enhancement subsequence polymorphism in guidance the postoperative individual chemotherapy for patients with resected non-small cell lung cancer.Methods Retrospectively analyze the results of 150 cases from February 2010to June 2014.Statistical analysis with SPSS 21.0.Results Three of the most common gene type of XRCC1 399 is Arg/Arg(58.7％),Arg/Gln(36.7％) and Gln/Gln(4.6％),respectively.Three of the most common gene type of TYMS is 3R/3R (70.7％),2R/3R (25.3％) and 2R/2R (4.0％),respectively.Conclusion In resected non-small cell lung cancer,XRCC1 399 Arg/Arg genotype is the most common,followed by Arg/Gln type.At the sarne time,TYMS gene type 3R/3R accounted for more than 70％,especially higher percentage of in adenocarcinoma.Neither of these two gene polymorphism is recommended as marker to guide the postoperative individual chemotherapy.

Objective To investigate the environmental impact of the Japanese Fukushima No.1 nuclear power plant accident on radiation levels in some areas of Liaoning province.Methods The emergent monitoring was performed by detecting atmosphere aerosols,precipitations,drinking water,vegetables,milk and seafood by gamma spectrometry analysis and gross activity measurements.Results The fission radionuclides of 131I,134Cs and 137Cs were detected in atmosphere aerosols 20 d after nuclear accident.The rad ionuclides of 131I,134Cs and 137Cs were found existing in atmosphere for 25,4 and 6 d,respectively,with the highest concentrations of 4.6 × 10 3,2.9 × 10-4 and 4.2 × 10-4 Bq/m3,respectively.The man-made fission radionuclides could not be detected in vegetablcs,drinking water and milk from Shenyang city and seafood from Dandong city.Conclusions The atmosphere might be slightly contaminated in Liaoning province due to the nuclear accident,whereas the vegetables,milk and drinking water not contaminated.

Objective: To observe the effects of electroacupuncutre at Tianzhu point on the expressions of bcl-2 and bcl-XL in the degenerative cervical intervertebral disc of rats. Methods: Forty SD male rats were randomly divided into 4 groups, sham surgery group, model group, Western medicine group and electroacupuncture group, there were 10 rats in each group. Except for rats in the sham surgery group, rats in the other groups were made to be of cervical intervertebral disc degeneration by unbalanced dynamic and static forces. Rats in the electroacupunture group were treated with electroacupuncture at Tianzhu (BL 10) and Dazhu (BL 11) points, while rats in the Western medicine group with Fenbid, and rats in the model group were not treated. After 30-day treatments, the expressions of bcl-2 and bci-XL were observed with immunohisto-chemical method in the cervical intervertebral disc. Results: The expression of bcl-2 was higher in the electroacupuncture, sham surgery, and western medicine groups than that in the model group (P<0.01), whereas, there was no difference among these three groups. The expression of bcl-XL in the electroacupuncture group was lower than that in the sham surgery group (P<0.01), and higher than those in the Western medicine group and model group (P<0.01). Conclusion: Electroacupuncture treatment can enhance the expressions of bcl-2 and bcl-XL, which may be the mechanism of delaying the cell apoptosis in the intervertebral disc to treat diseases.

Objective To investigate the effecacy of open reduction internal fixation in cases with rib fracture. Methods The pain scores,respiratory related clinical indicators change of 81 rib fractuure cases underwent open reduction internal fixation surgery were ob-served. A comparison was made between the surgical group and the non-surgical group of 37 cases on pain scores trend and hospital stay. Re-sults All operations were successfully completed and postoperative recovery was good. Postoperative pain scores and respiratory rate was sig-nificantly lower(P=0. 000),Oxygen saturation was significantly higher(P=0. 002),the proportion of expectoration difficult,dyspnea and ac-tivities inconvenience were significantly lower(P<0. 05). Pain scores of surgical group significantly decreased after surgery peak hours that was the fourth day hospitalized,but the overall decline of pain scores in non-surgical group was slow. The hospital stay between the surgical group and the non-surgical group was not significantly different(P=0. 084). Conclusion The efficacy of open reduction internal fixation is significant to rib fracture with exact surgery indications,and appropriate timing of surgery is the fourth day after admission.

OBJECTIVETo analyze the association between the response of primary tumor to neoadjuvant chemoradiotherapy (CRT) and lymph node status in mid and low rectal cancer.

METHODSSeventy-one patients with locally advanced mid and low rectal cancer underwent preoperative CRT followed by surgery. Surgical specimens were examined by surgeons and pathologists to obtain more lymph nodes and the histological sections were examined. Tumor responses to preoperative CRT were assessed in terms of tumor downstaging and tumor regression. Statistical analyses were performed to investigate the relationship between tumor regression and lymph node status.

RESULTSAll the patients completed the neoadjuvant CRT. Twelve patients achieved pathological complete response, of whom one was not operated and on surveillance. Pathological examination of the remaining 70 patients showed that the tumor was downstaged to T 0-2 group in 39 patients, among whom 5 patients (12.8%) had positive lymph nodes. Tumor was not downstaged in 31 patients, of whom 10 patients (32.3%) had positive nodes. The difference between the two groups was statistically significant (P=0.029).

CONCLUSIONTumor regression is consistent with the reduction of lymph node metastasis after preoperative CRT.

Relapse after allogeneic hematopoietic stem cell transplantation (allo-HSCT) remains a main question on treatment failure.Current strategies for management that usually include salvage chemotherapy,donor lymphocytic infusion and second transplantation.Our study assessed the efficacy of decitabine (DAC) for treating patients with acute lymphoblastic leukemia (ALL) who relapsed after allogeneic hematopoietic stem cell transplantation (allo-HSCT).We retrospectively analyzed the outcomes of 12 patients with relapsed ALL after allo-HSCT who received DAC therapy.Nine patients received DAC combined with chemotherapy and donor stem cell infusion,and 3 patients received single-agent DAC.Ten of the 12 patients achieved complete remission (CR),1 achieved a partial remission (PR),and 1 had no response (NR) after treatment at the latest follow-up (LFU),the median survival was 11.2 months (range,3.8-34,7 months).The 1-and 2-year overall survival (OS) rates were 50％ (6/12) and 25％ (3/12),respectively.Five patients were still alive;4 had maintained CR and 1 was alive with disease.Patients with Philadelphia chromosome-positive ALL had higher survival rate than patients with Philadelphia chromosome-negative ALL (57.1％ vs.20％).No aggravated flares of graft-versus-host disease (GVHD) were observed during DAC treatment.Therefore,DAC may be a promising therapeutic agent for ALL recurrence after allo-HSCT.

Objective:To explore the category,prevalence and related factors of comorbidities associated with Tourette syndrome.Methods:125 patients with TS according to CCMD-3(Chinese Classification of Mental Disorders,3rd edition)were assessed with a self-designed family circumstance questionnaire,YGTSS,CBCL,Leyton obsessive-compulsive scale,and Conner's Child Behavior Checklist.Results:Of 125 TS patients,the comorbidities included attention deficit and hyperactivity disorder(ADHD,41.6%),obsessive-compulsive disorder(OCD,25.6%), anxiety disorders(8.0%),depressive disorders(4.8%),conduct disorders(8.0%),self-injurious behavior(3.2%),and sleep disorder(2.4%).Conclusion:There are many kinds of comorbid disorders at high prevalence in TS patients. These comorbidities adversely influence the therapy and prognosis of TS and are taken as the possible reasons for social function deficit.