AIM:To investigate the effects of p62 on drug resistance of human laryngocarcinoma cell line Hep-2.METHODS:The abundance of p62 in Hep-2/5-FU and Hep-2 cells was measured by RT-qPCR and Western blot.After silencing of p62 with p62 siRNA in the Hep-2/5-FU cells, the cell viability and cell apoptosis were determined by CCK-8 assay and flow cytometry.The levels of malondialdehyde (MDA), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) were measured to reflect the status of oxidative stress in the cells.The protein levels of apoptosis-related molecules Bcl-2, Bax, caspase-8/cleaved caspase-8 and caspase-3/cleaved caspase-3,and the activity of anti-oxidative stress pathway-related proteins Keap1/Nrf2 were measured by Western blot.RESULTS:The expression of p62 at both mRNA and protein levels was significantly up-regulated in the Hep-2/5-FU cells.The expression of p62 and Nrf2 increased in a dose-dependent manner in the Hep-2 cells.Knockdown of p62 inhibited the viability and promoted the apoptosis of the Hep-2/5-FU cells.Increased content of MDA, and suppressed activity of SOD and GSH-Px were also observed.Furthermore, knockdown of p62 up-regulated the protein levels of Bax, cleaved caspase-8, cleaved caspase-3 and Keap1, but down-regulated the protein levels of Bcl-2, Nrf2 and HO-1.CONCLUSION:Knockdown of p62 increases the sensitivity of Hep-2/5-FU cells to 5-FU exposure.The mechanism may be related to the inhibition of Keap1/Nrf2 pathway and the modulation of oxidative stress and cell apoptosis.

Objective To present the experience of surgical treatment of 12 patients with advanced carcinoma of esophagus involving aorta. Methods Resection of esophageal carcinoma and cervical esophago-gastrostomy or supraaortic esophago-gastrostomy were done in 12 patients. In all 12 patients, the resection of limited aortic adventitia was performed in 2 patients, excision of aorta and simple suture in 2 patients and aortoplasty with Gore-Tex patch in 7 patients, the resected segment was replaced with artificial vessel in 1 patient. Results Complete recovery was achieved in 2 weeks in 12 patients, without severe complications such as aortic fistula. Conclusion Surgical treatment expands the operative indications for patients suffering from esophageal carcinoma involving aorta and improves their life quality.

Objective To explore prognostic factors of renal cell carcinoma and investigate the association of neutrophil-to-lymphocyte ratio (NLR) with the prognosis of renal cell carcinoma (RCC) in patients who received nephrectomy treatment.Methods We retrospectively reviewed the records of 1325 patients with renal cell carcinoma who underwent nephrectomy between January,2008 and December,2012.We retrospectively analyzed the clinicopathologic characteristics of patients.The optimal cutoff value for NLR was determined using receiver operating characteristic curve (ROC) analysis.We defined them as high NLR group when NLR ≥ 2.7 and low NLR group when NLR ＜ 2.7.Overall survival (OS) and recurrence free survival (RFS) were estimated using the Kaplan-Meier method and compared using the logrank test.Multivariate models were used to analyze the association of NLR with clinicopathologic outcomes.Results By the end of the study, 1220 cases were followed up.The follow-up rate was 92.1％.Mean follow-up was 40 months (range 2 months to 87 months).The three-year and five-year overall survival rate were 91.3％ and 86.9％, respectively.Meanwhile the three-year and five-year recurrence free survival rate were 88.2％ and 85.8％ ,respectively.2.7 was selected as the optimal cutoff value to differentiate between low NLR and high NLR.A NLR ≥2.7 was significantly associated with worse 5-year overall survival and worse 5-year recurrence free survival than a NLR ＜2.7,91.4％ vs 87.3％ ,89.6％ vs 71.9％ (P ＜0.05).Age ＞65, presentation mode with symptom, higher tumor stage, higher Fuhrman grade,histologic subtype,neutrophil count ≥ 4.5, lymphocyte count ＜ 1.7, NLR ≥ 2.7 significantly correlated with poor OS on univariate analysis.Multivariate analysis revealed that higher tumor stage, preoperative NLR ≥ 2.7 at diagnosis were poor independent prognostic factors for OS of renal cell carcinoma.Conclusion High NLR was independent poor predictor of renal cell carcinoma.

Orthopedic robotics is an emerging industry in the area of healthcare , mainly used for minimally invasive treatment and accurate treatment .It can provide accurate surgical navigation and planning .Orthopedic robots can be mainly used for articular surgery , osteopathy surgery , spine surgery and traumatic orthopedics .This paper outlines the development and characteristics of orthopedic robots at home and abroad , analyzes the developments of orthopedic robots by combining medical imaging technology with clinical feedback , and predicts the future of this field .

Objective To analyze and summarize the clinical effect of peripherally inserted central catheters (PICC) guided by B-ultrasound,and to discuss the catheterization skills of PICC guided by B ultrasound.Methods Retrospectively analyzed the clinical data of 102 patients recieved PICC guided by ultrasound in neurosurgery department of Chongqing emergency medical center from January 2016 to May 2017.The success rate of one-time puncture, the success rate of one-time catheter delivery and the number of complications were analyzed, and the causes and treatment methods of complications were analyzed.Results Of the 102 cases,94 cases were successfully punctured in one time,6 cases were punctured twice,and 2 cases were punctured more than 2 times.The one-time puncture success rate was 92.16%.Catheter misplacement occurred in 5 patients,and postoperative complications occurred in 2 patients.Conclusion Mastering the related angiotomy and imaging knowledge of PICC and using the B-ultrasound guidance system to insert the catheter can improve the success rate of catheterization and reduce the postoperative complications.

[Objective] To investigate the variation of Q promoter (Qp) in nasopharyngeal carcinoma (NPC) cells, and to compare the existing two mutant sites [62 225 site(g→a)and 62 422 site (g→c) ] Qp in NPC cells with the Qp in B95.8 cell line in the functional and biological difference. [Methods] The Qp sequence was amplified in the samples from 29 cases of paraffin-embedded tissues of NPC suffers and 14 cases of peripheral blood of healthy adults by polymerase chain reaction (PCR) method (totally 43 cases). The point mutations on specified sites were analyzed and statistically compared from sequencing results. The sequences of variant and prototype Qp were amplified by PCR and cloned into luciferase reporter vector (pGL3-basic), then transfected into HaCat cells respectively. The transcriptional activity was compared between variant and prototype Qp using luciferase reporter system. The DNA binding affinity of mutant and prototype Qp to Sp1 was compared through chromatin immunoprecipitation (CHIP) method since mutation of nt 62 225 located in a Spl binding site. [Results] The mutation rate of Qp was significantly higher in NPC compared with healthy controls (P=0.039 5, <0.05), which suggested the variant Qp was closely associated with NPC. The transcription of the luciferase gene promoted by variant Qp was significant more than that of prototype Qp in transient transfection assay (2.5:1, P<0.05). The binding affinity of variant Qp to Sp1 was about 1.52 times higher than that of prototype Qp as determined by quantitative ChIP assay. [Conclusions] The transcriptional activity was enhanced in variant Qp in NPC cells compared with prototype, which possibly through the higher binding affinity to Sp1. We suggest that the mutated Qp may play an important role during the EBV infection and transformation of nasopharyngeal epithelium.

Objective To review the clinical characteristics of paraganglioma of the urinary bladder with 5 cases reprt.Methods The clinical data of 5 patients (2 males and 3 females,age 23-68 years)with paraganglioma of the urinary bladder were reported.Two cases were diagnosed by ultrasonography during health examination,1 case was found by hematuria,1 had difficulty of voiding,and 1 presented with palpitation,chest discomfort while urination.Two cases were clinical diagnosed as bladder paraganglioma,1case urachal carcinoma,and 2 cases bladder tumor.Cystoscopy showed a protruding tumor within the bladder or bladder had compressed changes.One case of tumor located in the triangle,1 in the posterior wall,1in the top,2 in the anterior wall.Three cases of biopsy were negative.Three cases of preoperative endocrine examinations showed norepinephrine significantly higher.Results Laparoscopic partial cystectomy was performed in 3 cases,open partial cystectomy in 1 case,and transurethral resection of bladder tumor (TURBT) in 1 case.One case had the complication of stress cardiomyopathy during TURBT,3 cases found intraoperative hypertensive crisis.The bleeding volume was 20-800 ml (average 126 ml),and I case received blood transfusion.During the follow-up period for 3-48 months,the blood pressure was normal,and no recurrence was found.Conclusions Bladder paraganglioma is uncommon and easily misdiagnosed.For the patients with bladder tumor,accompanied by changes in blood pressure,palpitations during urination should be highly suspicious of bladder paraganglioma.Partial cystectomy is the main treatment method.

Objective To investigate the therapeutic efficacy of Chinese medicine of Wusheng Tincture for external application in treating cancer pain, and to observe its effect on the quality of life ( QOL) of cancer patients. Methods Eighty-three cancer pain patients were randomized into treatment group (N=42) and control group (N=41). Except 5 cases dropping out for the itch of skin, a total of 78 cases finished the treatment, 40 in the treatment and 38 in the control group. The patients were given the corresponding medicine according to the classification of numerical rating scale ( NRS) scores. In the control group, the patients were treated following the three-step analgestic ladder issued by World Health Organization ( WHO). The treatment group was given external application of Wusheng Tincture on the painful regions based on the same three-step analgestie ladder treatment as that of the control group, the treatment course lasting 7 days. The rating scale NRS scores and QOL scores were observed for the assessment of therapeutic effect and QOL of the two groups. Results (1) On medication day 7, NRS scores in both groups were decreased as compared with those one day before treatment (P<0.01), but the differences between the two groups were insignificant (P>0.05) . (2) The total effective rate of the treatment group was 82.5%, and that of the control group was 68.4%, the difference being significant between the two groups ( P<0.05) . For mild-pain patients, the therapeutic effect of the treatment group was better than that of the control group (P<0.05) . However, the difference of the therapeutic effect for patients with moderate and severe pain was insignificant between the two groups ( P>0.05) . ( 3) On medication day 7, QOL scores were much lower in both groups than those one day before medication, the difference being significant ( P<0.01) . However, the difference of QOL scores between the two groups was insignificant after medication (P>0.05) . Conclusion External application of Wusheng Tincture may have certain therapeutic effect in treating patients with mild cancer pain, but fails in enhancing the effect for patients with moderate and severe pain, either in improving the QOL of cancer pain patients when used together with WHO three-step analgestic ladder.

Objective To summarize the experience of surgical treatment of ascending aortic aneurysms and aortic dissections. Methods From February 2001 to October 2005, 31 patients including 26 male, 5 female, aged 41.3 years old (range 14-72) received surgical management. Twenty cases were diagnosed as ascending aortic aneurysm and aortic root aneurysm, 8 as Standford A dissection, 3 as Stanford B dissection. Twenty-one patients underwent classic Bentall procedure in which VSD repair was carried out in 1 case, mitral valvoplasty in 2 and mitral valve replacement in 2; Four patients underwent modified Bentall procedure (coronary button technique); Three patients underwent Wheat procedure; The remaining 3 patients with Stanford B dissection underwent graft replacement of descending aorta. Results There was no death during hospital stay that lasted 13-46 d with an average of 16.4 d after operation. The mean clinical follow-up was (21?18.5) months (range 1-63 months). One patient died without describable cause two years later. One patient had ascending aorta-pulmonary artery fistula at color Doppler examination half a year later. One patient was detected rupture of distal anastomoses half a year after operation and underwent stent-graft, SG. Conclusion The surgical treatment of aortic aneurysms and aortic dissections could be carried out safely based on the accurate diagnosis, specific surgical strategy and fine technique.

OBJECTIVE: To evaluate the efficacy of combined modality therapy for advanced hypopharyngeal carcinoma in order to improve the curative effect of hypopharyngeal carcinoma. METHOD: Seventy-six male patients with the stage III - IV hypopharyngeal carcinoma were treated with postoperative combined modality. Of all the 76 cases, 44 were treated with postoperative radiotherapy, and the other 32 treated with chemoradiotherapy concurrently. RESULT: Kaplan Meier analysis indicated that the overall 5 survival rates of patients treated with postoperative radiotherapy was 25.9%, and that of patients treated with postoperative chemoradiotherapy was 27.8%. There was no significant difference between the two groups (P>0.05). Three and five years relapse-free survival rates of the patients treated with postoperative radiotherapy were 36.0%, 22.5%, and those of the patients treated with postoperative chemoradiotherapy were 68.0%, 45.3%. Significant difference was calculated between the two groups (P<0.05). According to the NCI CTC3.0 criteria, the toxicities on grade 3 or above of the two groups showed no significant difference (P>0.05). CONCLUSION For advanced hypopharyngeal carcinoma, postoperative chemoradiotherapy yielded satisfactory relapse free survival and laryngeal function preservation rate which was superior to that of postoperative radiotherapy. Also the treatment toxicities were not increased.
Adult ; Aged ; Aged, 80 and over ; Carcinoma, Squamous Cell ; mortality ; surgery ; therapy ; Chemoradiotherapy ; Combined Modality Therapy ; Humans ; Hypopharyngeal Neoplasms ; mortality ; surgery ; therapy ; Male ; Middle Aged ; Neoplasm Staging ; Survival Rate