Objective:To explore the mediating effect of belief in a just world and self-esteem on relationship between childhood abuse and subjective well-being in college students.Methods:Totally 929 college students[314 males and 615 females,aged 17 to 25 year,mean age (20 ± 3) year] from 4 universities of Harbin were assessed.The Childhood Trauma Questionnaire (CTQ-SF) was used to assess childhood abuse,the Satisfaction with Life Scale (SWLS) and the Affect Balance Scale (ABS) was used to assess subjective well-being,the Believe in a Just World Scale (BJW) was used to assess belief in a just word,and the Self-Esteem Scale (SES) was used to assess self-esteem.The Bootstrap was used to test the mediating effect of belief in a just world and self-esteem on relationship between childhood abuse and subjective well-being.Results:General belief in a just world,personal belief in a just world,self-esteem played an independent mediating effect respectively between childhood abuse and life satisfaction.The confidence interval from Bootstrap output were 95％ (-0.026--0.001),95％ (-0.141--0.058) and 95％ (-0.235--0.122).Personal belief in a just world and general belief in a just world played chain mediating effect between childhood abuse and life satisfaction (-0.059--0.004).Self-esteem played an independent mediating effect between childhood abuse and emotional balance (-0.308--0.181).Personal belief in a just world and general belief in a just world played chain mediating effect between childhood abuse and emotional balance (-0.046--0.001).Conclusion:Childhood abuse and subjective well-being of individuals,belief in a just world and self-esteem are related.Belief in a just world and self-esteem play mediating effect between childhood abuse and subjective well-being.

Objective To investigate the technique and method of MSCT in examination of laryngeal. Methods MSCT data of 28 patients with laryngeal carcinoma confirmed pathologically were analyzed retrospectively. Images quality was evaluated and the results obtained with various windows and CT virtual larynscopy were compared. Results All images had good quality,20 cases(69% ) could be displayed with conventional soft tissue windows,24 cases(81% ) could be demonstrated with lung windows,and 27 cases(93% ) could be demonstrated with CT virtual larynscopy. Conclusion The multislice CT could effectively demonstrate laryngeal carcinoma, and could be applied routinely in examination of laryngeal carcinoma.

Objective: To study the relationship between Framingham risk score for coronary artery disease (CAD) and cognitive function in healthy community elders.
Methods: A total of 276 healthy community elders were evaluated by Framingham score to predict the risk for suffering from CAD in 10 years. The subjects were divided into 3 groups. High risk group (the risk > 20%), n=46, Mid risk group (the risk at 10%-20%), n=76 and Low risk group (the risk < 10%), n=154. The cognitive function was measured by mini-mental state examination (MMSE) and China adult intelligence scale (CISA). The differences of cognitive function levels to 3 CAD risk groups were studied.
Results: With the increased CAD incidence from Low risk, Mid risk to High risk groups, the MMSE score reduced accordingly (26.9 ± 1.45) vs (24.3 ± 1.53) vs (22.2 ± 1.43), P=0.014. Pearson analysis presented that MMSE score was negatively related to Framingham risk score (r=-0.213, P<0.001). There were several elements of cognitive function related to Framingham risk score including MMSE score, question answering, grid filling, oral arithmetic and word distinguishing (r=-0.247), (r=-0.167), (r=-0.132), (r=-0.152) and (r-0.256), all P<0.05.
Conclusion: CAD risk level was negatively related to cognitive function, the higher Framingham risk score resulted in the lower cognitive function in healthy community elder subjects.

Objective To explore the clinical efficacy of laparoscope-assisted transanal total mesorectal excision (La-TaTME) for middle-low rectal cancer.Methods The retrospective cross-sectional study was conducted.The clinical data of 16 patients with middle-low rectal cancer who underwent La-TaTME in the Peking University Third Hospital from August 2015 to August 2016 were collected.Sequential surgery of La-TaTME was applied to patients in the same team,with laparoscopic surgery first and then transanal surgery.Observation indicators:(1) operation and postoperative recovery situations:conversion to open surgery,anastomosis method,operation time,volume of intraoperative blood loss,intraoperative complications,time for out-of-bed activity,time for liquid diet intake,postoperative complications and duration of postoperative hospital stay.(2) postoperative pathological situations:length of surgical specimen,tumor diameter,distance from tumor to resected distant intestinal canal,complete degree of mesorectum,circumferential resection margin,pathological T stage,pathological N stage,number of lymph node detected and tumor cell differentiation.(3) follow-up.Patients in stage Ⅲ-ⅣV of TNM stage of RC underwent postoperative adjuvant chemotherapy.Follow-up using outpatient examination was performed once every 3 months postoperatively to detect the patients' survival and tumor recurrence up to December 2016.Measurement data were represented as M (range).Results (1) Operation and postoperative recovery situations:all the 16 patients underwent successful La-TaTME without conversion to open surgery,including 10 with colorectal anastomosis,3 with colon-canalis analis anastomosis and 3 with permanent colostomy.Operation time and volume of intraoperative blood loss were 290 minutes (range,215-420 minutes) and 50 mL (range,30-100 mL),respectively.One patient had intraoperative complication,showing broken ends ischemia of sigmoid colon after dragging out resected rectum from the anus,following free splenic flexure of colon,about 5 cm ischemic sigmoid colon were resected,and descending colon-rectum anastomosis was performed.Time for out-of-bed activity and time for liquid diet intake were 1 days (range,1-3 days) and 2 days (range,1-9 days),respectively.Among 3 patients with postoperative complications (Ⅱ stage of ClavienDindo),2 with incomplete intestinal obstruction were improved by gastrointestinal decompression and total parenteral nutrition,and 1 with presacral infection was improved by drainage and antibiotic therapy.Duration of postoperative hospital stay was 7 days (range,5-21 days).(2) Postoperative pathological situations:length of surgecal specimen,tumor diameter and distance from tumor to resected distant intestinal canal were respectively 18.0 cm (range,12.0-24.0 cm),3.5 cm (range,0.5-6.8 cm) and 2.5 cm (range,1.0-5.0 cm).Evaluation of mesorectum of surgical specimen:14 patients had complete mesorectum of surgical specimen and 2 had nearly complete mesorectum.There was no residual tumor at circumferential resection margin,proximal and distal ends.Pathological T stage of 16 patients:T0 (pathological complete response after neoadjuvant therapy),T1,T2 and T3 stages were found in 1,1,4 and 10 patients,respectively.Pathological N stage:12,2 and 2 patients were detected in N0,N1 and N2 stages,respectively.Number of lymph node detected was 16 (range,6-32).Tumor cell differentiation:no tumor cell (pathological complete response after neoadjuvant therapy),high-,moderateand low-differentiated tumors were respectively detected in 1,2,7 and 6 patients.(3) Follow-up.All the patients were followed up for 12 months (range,4-16 months).There were no local tumor recurrence or distant metastasis and death.Conclusion La-TaTME may be a new,safe and effective resection for middle-low rectal cancer.

Objective T o observe the expression changes of hypoxia inducible factor-1α (H IF-1α) and vascular endothelial grow th factor-A (V E G F-A ) in rats w ith arrhythm ias, and to explore the differences of the expression pattern in the tw o indicators of acute m yocardial ischem ia caused by arrhythm ias and coronary insufficiency. Methods T he arrhythm ia w as induced by C aC l2, and the expression changes of H IF-1α and V E G F-A w ere detected by im m unohistochem istry, W estern blotting and real-tim e PC R w ithin 6 h after the arrhythm ia in rats. Results T he expression of H IF-1α and V E G F-A show ed diffuse in the m yocardial tissue of rats died from arrhythm ias. B oth of them increased in the early arrhythm ia, then decreased. E xtensive m yocardial ischem ia happened at the beginning of arrhythm ia occurrence and its range didn't expand w ith tim e. Conclusion T he expressions of H IF-1α and V E G F-A in m yocardium of the rats w ith arrhythm ia can provide evidence for the differential diagnosis of acute m yocardial is-chem ia caused by fatal arrhythm ia and coronary insufficiency.

Objective To investigate the application value of transabdominal-tansanal total mesorectal excision combined with liver metastasis resection for synchronous low rectal liver metastasis.Methods The retrospective descriptive study was adopted.The clinical data of a male patient with synchronous low rectal liver metastasis who was admitted to the Peking University Third Hospital in November 2015 was collected.Transabdominal-transanal total mesorectal excision combined with liver metastasis resection was performed after multidisciplinary team conference.The liver metastasis resection,vascular disconnection,lymph node dissection and upper and middle mesorectal disconnection were done by transabdominal approach.Then complete mesorectal excision and specimen removal of rectum and liver were done by transanal approach.The intraoperative status (operation method,operation time,volume of intraoperative blood loss,blood transfusion),occurrence of postoperative complications,results of pathological examination and follow-up were observed.The patient was followed up by outpatient examination till January 2016.Results The operation was performed successfully without severe perioperative complications.The operation time and volume of intraoperative blood loss were 360 minutes and 170 mL,respectively.The patient did not receive intraoperative blood transfusion,without urinary retention and presacral abscesses.The patient was discharged at postoperative day 9.The postoperative pathological results showed high-differentiated rectal protruded adenoma and high-middle differentiated adenocarcinoma metastasis in the liver tissue with the negative resection margins.The tumor sizes of rectum and liver metastasis were 5.0 cm × 5.0 cm× 1.5 cm and 1.5 cm × 1.0 cm × 1.5 cm,respectively.The tumor node metastasis (TNM) stage was stage Ⅳ (pT3N0M1).The patient had a good life quality during the follow-up of 1 month.Conclusion Transabdominal-transanal approach might provide an alternative operative approach and resection method for synchronous low rectal liver metastasis,with a good short-term outcome.

Objective To investigate the correlation between three gene locus polymorphisms of X-ray repair cross-complementary protein 1 (XRCC1) exon (Arg194Trp, Arg280His and Arg399Gln) and the risk of colorectal cancer (CRC). Methods A case-control study was performed in 250 CRC patients (case group, 128 colon cancer patients and 122 rectal cancer patients) and 213 healthy individuals (control group). The three gene locus polymorphism of XRCC1 was tested by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) method. The genotype distribution and allele frequency of each locus was analyzed with SPSS 10.0 software. Results There was no significant difference in allele frequency of XRCC1 at 194 and 399 loci (P > 0.05). However, the 280 Arg/His allele frequency of XRCC1 was higher in case group than that in control group (OR=1.66,95%CI:1.01~2.73,P=0.047). The 280Arg/His allele frequency was higher in rectal cancer group than that in control group (OR =1.82,95%CI:1.02~3.27). The frequency of 280His allele (Arg280His and His280His) was higher in case group than that in control group (OR=1.85,95%CI:1.06~3.22). However, it was a relative low risk factor of colon cancer and there was no significant difference between colon cancer group and control group (OR=1.85, 95%CI:1.06~3.22). Conclusions There was no correlation between XRCC1 Arg194Trp and Arg399Gln polymorpohisms and the risk of CRC. However, 280Arg/His genotype may increase the risk of CRC, and 280His allele is a risk factor of rectal cancer.

Objective To explore the efficacy and safety of Gemcitabine and Cisplatin combination chemotherapy in treatment of muscle-invasive urothelial cell carcinoma.Methods Analyse of 72 cases of patients with muscle-invasive urothelial cell carcinoma receiving chemotherapy from September 2010 to September 2012,including 47 male and 25 female,the avarage age was 65 (86-33).All patients were received GC chemotherapy (Gemcitabine 800-1 000 mg/m2,ivgtt,dl,d8,d15; Cisplatin 70 mg/m2,ivgtt,d2).Efficacy was reviewed after 1 cycle of chemotherapy.Results Fifty-one cases in all the patients completed two or more chemotherapy cycles and CR 10 cases,PR 27 cases,total effective rate was 51.39％ (37/72).The main toxic reactions included nausea,vomit,myelosuppression,and then damage of liver and renal function.Cconclusion GC regimen is a good choice for urothelial cell carcinoma.Close follow-up and the usage of adjuvant drugs can contribute to reduce the side effect of chemotherapy.

Objective To investigate the effect of different extinction training on fear memory,DNA methylation protein and hippocampal newborn neurons in adult rats.Methods Male SD rats were randomly divided into four groups:naive group,conditioned fear group,traditional-extinction group and retrieval-extinction group.Conditioned fear models were established by tone paired foot shock,and retrieval-extinction training or traditional-extinction training were performed in adult rats.Retention test,Western blot and immunnohischemistry were used to detect the no-freezing time percentage,the DNA methylation protein level,the newborn neurons respectively at 1d,4d and 7d after different extinction training.Results The traditional-extinction group((28.06± 11.33) ％) or retrieval-extinction group((30.28± 11.48) ％) had higher percentage of no-freezing time than that of conditioned fear group((21.35±9.45) ％),and lower percentage of no-freezing time than that of naive group ((75.65±8.69)％) (t=2.204,2.517,7.955,7.023,all P＜0.05) at the fourth day after extinction training.At the seventh day after extinotion training,the retrieval-extinction group ((69.72±13.62)％) had higher percentage of no-freezing time than traditional-extinction group((24.27± 11.67)％,t=7.052,P＜0.01) or conditioned fear group((50.64± 12.51)％,t=2.451,P＜0.05),and showed no significant difference compared with naive group((72.03±9.36) ％,t=0.251,P＞0.05).The expressions of Dnmt-1 and MBD-2 in traditional-extinction group or retrieval-extinction group were lower than those in conditioned fear group,and higher than those in naive group (P＜0.05) at 4 d after extinction.training.At 7 d after extinction training,the expressions of Dnmt-1 and MBD-2 in retrieval-extinction group were lower than those in traditional-extinction group or conditioned fear group (P＜0.05),and there was no significant difference between retrieval-extinction group and naive group.The Brdu-positive cells of traditional-extinction group or retrieval-extinction training were higher than conditioned fear group,and less than naive group (P＜0.05) at the fourth day after extinction training.At the seventh day after extinction training,the Brdu-positive cells in retrieval-extinction group were higher than those in traditional-extinction group or conditioned fear group (P＜0.05),and there was no significant difference between retrieval-extinction group and naive group.Conclusion The extinction training can decrease fear memory of rats with conditioned fear memory,and the effect of retrieval-extinction training were better than traditional-extinction training,which may be associated with the increases of hippocampus newborn neurons and the decline of DNA methylation.

Objective To investigate the safety of gemcitabine combined with cisplatin (GC) / carboplatin (GCa) regimen in adjuvant chemotherapy for upper urinary tract urothelial carcinoma.Methods The clinical and follow-up data of 80 patientswho underwent GC or GCa chemotherapy withinfourcycles of upper tract urothelial carcinoma (UTUC) admitted to Beijing Friendship Hospital,Capital Medical University from June 2012 to January 2018 were analyzed retrospectively,including 39 males and 41 females,aged 36 to 81 years,with a median age of 64.0 years.According to the chemotherapy regimen,all patients were divided into GC group (n =54) and GCa group (n =26).The software of SPSS 22.0 was used to calculate the incidence of adverse reactions of chemotherapy.The independent risk factors for serious adverse reactions were analyzed.The incidence of serious adverse reactions and the safety of renal function in patients with renal insufficiency during chemotherapy were explored.Results For adverse reactions to chemotherapy,GC group had 20 patients (37.0％) with severe myelosuppression,9 patients (16.4％) with non-hematological toxicity,3 patients (5.6％) with delayed chemotherapy due to serious chemotherapy adverse reactions,and 12 patients (22.2％) withdrawn chemotherapy early due to inability to tolerate chemotherapy toxicity.In GCa group,12 patients (46.2％) had severe myelosuppression,5 patients(19.2％) had severe non-hematologic toxicity,6 patients(23.1％) had delayed chemotherapy due to serious chemotherapy adverse reactions,and 6 patients (23.1％) had withdrawn chemotherapy early due to inability to tolerate chemotherapy toxicity.Pre-chemotherapye GFR ＜ 60 ml ·(min · 1.73 m2)-1 (OR =5.074,95％ CI:1.222-21.068) was an independent risk factor for severe myelosuppression in GC group (P ＜ 0.05).There was no significant difference in severe adverse reactions between the two groups (P ＜ 0.05).For the renal function decline between the two groups,Cr and eGFR decreased to a certain extent in the two groups during chemotherapy (P ＜ 0.05),but there was no significant difference in the extent and degree during chemotherapy (P ＜ 0.05).Conclusions Both GC and GCa adjuvant chemotherapy have certain toxicity and side effects.The process of chemotherapy needs to be closely monitored and timely symptomatic treatment if needed.Most patients can eventually endure chemotherapy.For patients with renal insufficiency,under the precondition of strict monitoring and adequate hydration,GC and GCa regimens adjuvant chemotherapy within four cycles may be the same safe level ofchemotherapy.