The definition of esophagogastric junction (EGJ) adenocarcinoma and progress in multidisciplinary treatment for the tumor were revised in this review. Siewert classification is especially useful for the surgical approach of EGJ adenocarcinoma. Siewert I should be treated as esophageal cancer, and Ivor-Lewis esophagogastrectomy (right thoracotomy and laparotomy) is recommended as an extended two-field lymphadenectomy. For Siewert II or III tumors, left thoracophreno-laparotomy is preferred, especially in case of positive thoracic lymph nodes or positive resection margin. If there is any contraindication against thoracotomy, or a high operating risk, a transhiatal esophagectomy with lower mediastinal lymphadenectomy is an alternative. Preoperative chemoradiotherapy or perioperative chemotherapy improves overall survival and the rate of complete resection for patients with large tumor or lymph node metastasis. Neoadjuvant chemoradiotherapy is associated with high but acceptable postoperative complications. Adjuvant chemoradiotherapy remains a rational standard therapy for curatively resected EGJ cancer with T3 or greater lesion or positive nodes.
Adenocarcinoma ; surgery ; therapy ; Combined Modality Therapy ; Esophageal Neoplasms ; surgery ; therapy ; Esophagogastric Junction ; Humans ; Stomach Neoplasms ; surgery ; therapy

Objective:To establish the mouse model of retinal neovascularization. Methods:Twenty neonatal C57BL/6J mice were divided into two groups randomly.The treated group was exposed to 75% oxygen for 5 days and then to room air.All animals were sacrificed at postnatal day 17 and both eyes were enucleated.Endothelial cell nuclei extending into the internal limiting membrane were counted via HE stain and the expression of vascular endothelial growth factor(VEGF) was detected via immunohistochemical stain. Results:On average,25.70?4.90 endothelial cell nuclei were seen in the treated group and 0.85?1.02 in the control group.The difference was statistically significant(P

Female patients, 50 years old, have a recurrent unilateral aggravating headache for 5 years. Without runny nose, sneezing, nasal hemorrhage, smell or vision loss. Prefessional examination: there is a visible hoar neoplasm in the right middle nasal meatus With smooth surface and rich in vascular. The nasopharyngeal MRI shows that there is a occupancy lesion in the right nasal cavity and sinuses, well-demarcated, about 21. 5 mm x 25.5 mm x 37.0 mm. Angiofibroma is the most likely diagnosis. Postoperative pathological section shows that tumor are hypercellular, which contains big nucleus. Cells are spindle or short fusiform shape, there are stripes and nuclear division in some cells. There are vortex structures in partial region. Immunohistochemical examination shows: CD34(++), Ki-67 (< 5%), CD68(-), Des (-), NSE(+), S-100(++), SMA(-), EMA (+). Histopathologic diagnosis: atypical meningioma, some were differentiated to rhabdoid meningioma. The final diagnosis is malignant meningioma in nasal cavity and paranasal sinuses.
Female ; Humans ; Meningeal Neoplasms ; diagnosis ; pathology ; Meningioma ; diagnosis ; pathology ; Middle Aged ; Nasal Cavity ; pathology ; Paranasal Sinus Neoplasms ; diagnosis ; pathology ; Paranasal Sinuses ; pathology

Pathogenesis of acute promyelocytic leukemia is one of the best understood disease among human hematological malignancies. Becasue of retinoic acid (RA) and arsenic trioxide which directly target the oncogenic promyelocytic leukemia-retinoic receptor A (PML-RARα) fusion protein, this disease became the first model for oncogene-targeted therapies.And other new therapy methods also gain great concern. The complexity of recent views of acute promyelocytic leukemia pathogenesis, as well as latest progress in clinical treatment were summarized and discussed in this review.

Aged ; Female ; Humans ; Leukocyte Common Antigens ; metabolism ; Peroxidase ; metabolism ; Sarcoma, Myeloid ; metabolism ; pathology ; Vulva ; metabolism ; pathology ; Vulvar Neoplasms ; metabolism ; pathology

Objective To investigate the condition of defecation function,psychological health and quality of life about patients who underwent low rectal cancer anus preservation operation.Methods We randomly selected 40 cases from patients who went to do rectal cancer anus preservation operation as observation group,who received e-valuation with bowel habit questionnaire (the result using Zhong-fa Xu anal function evaluation method which widely used for subjective evaluation),SF-36 scoring systems at 2 weeks before surgery,postoperative 3 months,6 months, 1 year,and the anorectal manometry postoperative 3 months,6 months,1 year.The normal controls were 40 healthy people without anus-rectal disease and disordered defecation,investigated and detected at the same time point.Results Compared with the control group,the ARP,MSP,RAIA,MTV of the observation group significantly decreased(P <0.05)within 3 months and 6 months after operation[postoperative 3 months:(22.2 ±3.8)mL,(30.3 ±4.1)mL and (4.1 ±15.8)mL,(83.5 ±17.3)mL,32.5%,t or χ2:6.34,8.21,5.34,8.94,4.34;after 6 months,those were (26.3 ±3.5)mL,(37.3 ±4.7)mL and (4.7 ±16.1)mL,(106.2 ±18.2)mL,40%,t or χ2:7.34,7.99,4.75, 7.99,4.75],and 1 year the margin contract (P >0.05).Compared with the control group,in the preoperation,the results of anal function evaluation method and SF-36 scoring systems had no significant differences.Based on the Zhong-fa Xu anal function evaluation,we could draw the following conclusions:anal function was impaired obviously in postoperative 3 months (fine rate was 62.5%,χ2 =16.08,P <0.01 ),and recovered gradually in postoperative 6 months to 1 year,but the impaired performance was still exists in postoperative 1 year.Compared with the control group,3 months,6 months after surgery,the SF-36 life quality comprehensive score of the observation group had no significant difference (P >0.05),but the scores of PF and RF dimension were lower than those of the healthy con-trols:postoperative PF dimension[3 months:(80.12 ±15.12),6 months:(82.19 ±17.01),and 1 year:(83.13 ± 17.12),compared with the control group,t =4.5,3.1,2.5 respectively],postoperative RP dimension [3 months:(58.29 ±40.15),6 months:(59.48 ±41.07),1 year:(60.17 ±42.15),compared with the control group,t =4.1, 2.9,2.7 respectively];there were statistically significant differences (P <0.05).Conclusion For patients who underwent low rectal cancer anus preservation operation,postoperative anal function and life quality were affected,and is significant in a short period of time,part of the quality of life for long-term survival in patients decreased obviously, and it is necessary to assess sufficiently preoperation,do defecation function exercise or biological feedback therapy postoperation.

Expression conditions of induction strategies for the cytoplasmic inclusion bodies (IBs) production of liver targeted interferon IFN-CSP by recombinant Escherichia coli (E. coli) BL21 (DE3) were optimized in shake-flask cultures in this study. The factors of the optimized protocol included in the present study were pH, inducer IPTG (isopropyl beta-D-thiogalactoside) concentration, culture growth temperature, incubation time and induction point. The effects of those factors were investigated by 'single variable at a time' method, aimed to analyze characterization of the recombinant strain. Orthogonal experimental design was further used to optimize the above critical factors for IFN-CSP production. According to the expression optimization result, it was confirmed that the main influence factors were cell density and induction temperature. The IFN-CSP gene expression optimized conditions were: pH value of the culture medium was 6.0, culture temperature 37 degrees C, adding IPTG to final concentration 0.4 mmol/L when the recombinant strain growth density OD600 achieved 0.8 and induction time 4 h. At this point, the IBs represented 74.3% of the total cellular protein. Compared with the non-optimized condition, IFN-CSP production obtained in optimized induction strategies were increased by approx. 1.2-fold. The optimized induction strategy yielded 688.8 mg/L of IFN-CSP, providing experimental data to study the biology activity and productive technology of IFN-CSP.
Biotechnology ; methods ; Cell Culture Techniques ; methods ; Culture Media ; chemistry ; Escherichia coli ; metabolism ; Gene Expression ; Interferons ; biosynthesis ; Liver ; Temperature

Objective To evaluate the effect of oral mesalazine combined with metronidazole enema in the treatment of patients with ulcerative colitis and the impact on interferon-γ (IFN-γ),interleukin-4 (IL-4),interleukin-8 (IL-8).Methods A total of 80 patients with ulcerative colitis were selected and randomly divided into control group and observation group,40 cases in each group.The control group was treated with oral mesalazine.The observation group was treated with oral mesalazine and metronidazole retention enema.4 weeks as a course of treatment,the patients were treated for 2 courses.The clinical efficacy,disease activity index(DAI) score before and after treatment,as well as peripheral blood erythrocyte sedimentation rate (ESR),levels of IFN-γ,IL-4,IL-8 changes was compared between the two groups.Results The total effective rate was 90.00％ in the control group,which was significantly higher than 75.00％ in the control group,the difference was statistically significant (x2 =23.52,P ＜ 0.05).Before treatment,there were no significant changes in diarrhea,colonic mucosal inflammation,bloody stool and DAI scores (t =0.32,0.08,0.03,0.05,all P ＞ 0.05).After treatment,there were significant decline in each integral of the two groups,the integral of the observation group declined more than those in the control group,the differences were statistically significant(t =15.35,5.8,11.25,14.12,all P ＜0.05).Before treatment,there were no significant changes in ESR,IL-4,IL-8,IFN-γ of peripheral blood in the two groups (t =0.60,-0.95,0.03,-0.06,all P ＞ 0.05).After treatment,ESR,IL-8,IFN-γ of peripheral blood declined in the two groups,IL-4 was increased,and the changes were more significantly in the control group than those in the control group(t =10.02,4.70,10.23,22.82,all P ＜ 0.05).Conclusion Oral mesalazine enema combined with metronidazole enema has significant clinical effect in patients with ulcerative colitis,it is better than treating with oral mesalazine only,and can effectively improve the clinical symptoms and possibly plays a role by regulating IL-8,IFN-γ,IL-4,and it deserves further clinical application.

Objective To investigate the distribution and sequence conservation of Hap adhensin encoding gene (hap) in clinical isolates of nontypeable Haemophilus influenzae (NTHi), to screen out and identify the predominant T-and B-cell (T-B) combined antigenic epitopes on Hap protein and to analyze their immunogenicity.Methods Sequence conservation of hap genes in NTHi strains and T-B combined antigenic epitopes were predicted using bioinformatic softwares.PCR was used to amplify the 156 bp segment at 5′-end and the 855 bp segment at 3′-end of hap gene (hap-5′-156 and hap-3′-855) and the amplified products were sequenced.Phage display systems of seven T-B combined antigenic epitopes located on the 55 aa segment at N-terminal and the 285 aa segment at C-terminal of Hap protein (Hap-N52 and Hap-C285) were constructed.Western blot assay and ELISA were performed to detect the antigenicity and immunoreactivity of different T-B combined epitopes displayed by recombinant phage PⅢ protein (rPⅢ).Results Hap protein encoded by the hap gene in NTHi was located on membrane surface.Sequences of the 156 bp segment at 5′-end and the 855 bp segment at 3′-end of hap genes extracted from different NTHi strains were relatively conservative, but many mutations were found in sequences at the middle regions of these hap genes.All of the 56 NTHi strains carried hap-5′-156 and hap-3′-855 segments and shared 92.3％-100％ identities in nucleotide and amino acid sequences of these segements.Hap-N5-24 in the Hap-N52 segment as well as Hap-C4-27, Hap-C28-47, Hap-C114-129, Hap-C150-173, Hap-C200-227 and Hap-C241-267 in the Hap-C285 segment was predicted as the T-B combined antigenic epitope with a higher score and less mutations.Results of Western blot assay and ELISA confirmed that the rPⅢ-displayed Hap-C4-27 and Hap-C150-173 epitopes presented clear hybridization bands with NTHi antisera, and 96.9％ (63/65) and 92.3％ (60/65) of serum samples from children with NTHi infection were positive for antibodies against Hap-C4-27 and Hap-C150-173 epitopes, respectively.Conclusion The gene of hap is widely distributed in clinical isolates of NTHi.Moreover, sequences of the 156 pb segment at 5′-end and the 855 bp segment at 3′-end of hap gene are conservative.Hap-C4-27 and Hap-C150-173 are the predominant T-B combined antigenic epitopes on Hap protein, suggesting that they can be used as epitope candidates for developing multiple antigenic peptide vaccines against NTHi.

Objective To establish three dimensional finite element model libraries of telescopic dentures and removable partial dentures by means of model libraries, and compare the characteristics of stress distribution among three prostheses. Methods Normal model libraries were imported and edited, and models of bilateral free-ended cases were established. Based on the model libraries of fixed partial dentures and removable partial dentures, the finite element models of telescopic dentures and removable partial dentures with medial or distal occlusal rest were established using softwares such as DELL Precision Graphics Workstation, UG 5.0, HyperMesh 7.0 and Abaqus 6.5, then finite element stress analysis was performed. Results The stress distribution on abutment root, parodontium, alveolar mucosa and alveolar bone was uniform. The maximum value of stress on the abutment root (6.205 Mpa) was much less than those of two removable partial dentures (18.41 Mpa and 34.49 Mpa). Conclusion For bilateral free-ended cases, the telescopic denture design is uniform in stress distribution with less stress on abutment root, which is healthy to the abutment root and surrounding tissues.