Objective To investigate the risk factors of vagus nerve invasion of advanced adenocarcinoma of esophagogastric junction (AEG).Methods The specimens from 98 patients with advanced AEG who underwent radical total gastrectomy and esophagogastric Roux-en-Y anastomosis from January 2011 to August 2012 at the First Affiliated Hospital of Anhui Medical University were collected.Serial section cutting was done and the upper and bottom incisional edges of every section were marked.The specimens were stained by hematoxylin-eosin solution,S-100 and CK immunohistochemistry.Vagus nerve invasion could be affirmed if cancer cells were observed in the peripheral space of vagus nerve and vagus nerve parenchyma or cancer cells infiltrated along the peripheral space of vagus nerve.Relationship between nerve invasion and clinicopathological factors was analyzed using chi-square test or Fisher exact probability.Factors related to vagus nerve invasion were analyzed using one-way analysis of variance and multi-factor logistic regression analysis.Results The incidence of vagus nerve invasion was 28.6％ (28/98),and the tumor only invaded the vagus nerve which had the same altitude as the upper incisional edge.The results of one-way analysis of variance showed that Siewert classification,intravascular cancer emboli,lymph node metastasis,the degree of lymph node metastasis,clinical staging,the degree of tumor differentiation were correlated with the vagus nerve invasion (x2 =14.156,14.552,5.454,10.706,6.919,14.767,P ＜ 0.05).The results of multi-factor logistic regression analysis showed that Siewert classification,intravascular cancer emboli and degree of tumor differentiation were the independent influencing factors of vague nerve invasion (OR =3.667,10.368,0.249,P ＜ 0.05).Conclusion Vagus nerve invasion is correlated with Siewert classification,intravascular cancer emboli and degree of tumor differentiation.The range of vagus nerve invasion is restricted under the upper incisional edge of tumor section.

As the third generation platinum antitumor drug with independent intellectual property rights,a number of basic and clinical research shows lobaplatin can effectively inhibit the proliferation of human breast cancer cell lines including triple-negative breast cancer in vivo.Compared with the cisplatinbased regimens,lobaplatin-based regimens have similar efficacy,and better safety profile.It becomes the new treatment option of metastatic breast cancer,and remains to be further study to optimize clinical rational drug use.

The training mode of the medical doctoral students in Albert Einstein College of Medicine is relatively perfect. Its advances are mainly embodied in the following three aspects:detailed and comprehensive training in scientific research capabilities, great emphasis on the process control and the strict assurance system in quality control. The above training mode helps Albert Einstein Col-lege of medicine to set up the good medical doctoral cultivation characteristics with the tolerance, competition, flexibility and freedom. To learn from those good traits, great efforts should be made in our medical doctoral cultivation mode to strengthen the role of tutor team, ensure the students' inter-ests, deepen the academic exchanges and meet the various needs of society.

Overexpression of epidermal growth factor receptor (EGFR) in esophageal cancer has been related to tumor grade, vascular invasion and metastasis. The level of EGFR expression may be a predictive marker of esophageal caneer's sensitivity to chemoradiotherapy. EGFR inhibitors have been indicated as an effective targeted therapy, and promising results have been observed in phase Ⅱ and Ⅲ clinical trials.

Objective To study the therapeutic effect of Jiedu Quyu Formula (Formula for Removing Toxins and Blood Stasis) on psoriasis vulgaris of progressive stage and its mechanism. Methods The 70 patients of progressive psoriasis vulgaris were randomized into treatment group (35 cases), treated by Jiedu Quyu Formula, and control group (35 cases), treated by Compound Qingdai Capsule. Healthy control group was of 30 healthy subjects. The contents of plasma endothelin (ET) were determined before and after treatment respectively, and the therapeutic effect of both treated groups were observed. Results After treatment, the psoriasis area and severity index (PASI) of both treated groups were significantly decreased in comparison with before treatment (P

Thirty-one children suffered from speech retardation were found to have normal hearing level through ABR and/or acoustic immittance tests. Some of them were further checked by psychiatrists and pediatricians. The results demonstrate that among reasons for speech retardation in children,autism and mental retardation are important factors that can not be ignored. A-mong children with unclear diagnosis .some harmful factors were found on themselves and in surroundings. We emphasize that for children with speech retardation,not only hearing disorders,but also other factors should be considered.

A novel exonuclease protection mediated PCR assay (EPM-PCR) to detect the interaction of protein and DNA at a dioxin-responsive enhancer (DRE) upstream of the CYP1A1 gene in rat hepatic cytosol was established. A double-stranded DNA fragment containing two binding sites was designed and incubated with the aryl hydrocarbon receptor (AhR) transformed by 2,3,7,8-tetrachlorodibenzo-p dioxin (TCDD) to generate TCDD: AhR: DNA complex which could protect receptor-binding DNA against exonuclease II (Exo III) digestion. With Exo III treatment, free DNAs were digested and receptor-bound DNAs remained that could be amplified by PCR. By agarose gel electrophoreses a clear band (285bp) was detected using TCDD-treated sample, while nothing with control samples. To detect transformed AhR-DRE complex, 2 fmol DNAs and 3 ug cytosol proteins were found to be sufficient in the experiment. Compared with gel retardation assay, this new method is more sensitive for monitoring the Ah receptor-enhancer interaction without radioactive pollution.
Binding Sites ; Cytochrome P-450 CYP1A1/*genetics ; Cytosol/metabolism ; DNA-Binding Proteins/chemistry ; Exodeoxyribonucleases/chemistry ; Liver/*metabolism ; Polymerase Chain Reaction ; Rats, Sprague-Dawley ; Receptors, Aryl Hydrocarbon/*chemistry ; Tetrachlorodibenzodioxin/*analogs & derivatives ; Tetrachlorodibenzodioxin/chemistry

Magnetic resonance imaging(MRI) is a non-invasive imaging technique of biological spin.MRI shows more advantages in imaging of orbital and ocular muscle than B-type sonography and X ray.MRI plays important roles in the study on anatomy of eye muscle,eye movements,survey of strabismus cause,also identification and diagnosis of strabismus.The imaging features,analysis of MRI,application of MRI in several special forms of strabismus were reviewed.

Lung transplantation is the unique method to cure pulmonary tuberculosis at final stage. This paper reviewed the history, indication and contraindication, method of donor and recipient selection and donor preservation, operation methods, postoperative complications and protocol for complications to well understand issues in lung transplantation. Moreover, lacking of donors and increasing mortality of patients waiting for transplantation are urgent problems. With technique development, prognosis amendment, and improvement of survival rate and quality of life, donor source becomes important. Many studies have been conducted to explore the application of cadaveric lung, and several animal trials have been successful. In addition, scope of in vivo pulmonary lobes transplantation is increasing. Based on split liver transplantation, split double-lung transplantation is developed. This method utilizes existed donor sources, and provides options for patients waiting for transplantation.

Objective To investigate the expression and distribution of cyclooxygenase-2(COX-2) in periodontal tissues during experimental tooth movement in rats,and study the relationship between COX-2 and vesscular reconstruction in experimental tooth movement process.Methods Thirty-five healthy Wistar rats were divided randomly into 7 groups on average:normal group and experimental groups for 1,3,5,7,14 and 21 d.A NiTi coil spring with 0.294 N mesial force was connected between first molars of maxillary and the upper incisors.The histological sections were stained with goat anti rat COX-2 antibody,and computer image analysis was used to study the expression of COX-2 in the periodontal tissues of rats.Results Pressure area:compared with normal group(134.75?5.25) the COX-2 expression in 1 d group (147.73?3.27)increased(P0.05).Conclusion The expression of COX-2 in periodontal tissues during experimental tooth movement increase,suggesting that COX-2 can promote the vascular reconstruction in periodontal tissues during orthodontic tooth movement.