Objective To investigate the clinical effect of the radial rectectomy with total mesorectal excision ih rectal cancer patients. Methods 42 cases with rectal cancer received total mesorectal excision were analyzed retrospectively. Results All 42 cases were performed with radial excision successfully,36 cases by stapling device. 3 cases of leak of anastomosis was happened after operation, one case treated with ostomy, the other two cases through drainage and better nutrition were cured. Assistant chemotherapy and radiotherapy were given to the patients. All patientswere followed up for 6 ～ 36 months, 2 cases with local tumor recurrence, liver metastasis 1 case.Conclusion The mesorectectomy excision could prevent the local recurrence after the operation of rectal carcinoma.It was effective to improve the patients'life quality.

Objective: Using MB-80 Microbiology Kinetic Rapid Reader, the methods were established to quantitatively measure the body fluid content of bacterial endotoxin and fungus in infectious patients. Methods: The blood samples were collected from Gram negative bacterial infection and deep mycosis patients and healthy volunteers. After pre-treatment, the plasma samples were measured using MB-80 system through kinetic turbidimetric limulus test method. The system computer could calculate the content of endotoxin and fungus during 1 hour detection. Results: The detection methods of endotoxin and fungus using MB-80 were simple and rapid. The process of pre-treatment was standardized and the results had good repeatability. The normal ranges of plasma endotoxin and fungus of human healthy volunteers were (2.03?2.32)ng/L and (2.46?2.15)ng/L respectively. The plasma endotoxin level of abdominal infection patients was increased significantly to 50-3 958 ng/L. The fungus level of deep mycosis patients was enhanced to 20-2 381 ng/L. Conclusion: The methods of endotoxin and fungus quantitatively measurement by MB-80 are simple and convenient and have results with good repeatability. The new detection methods of endotoxin and fungus can be used for diagnosis of endotoxemia and deep mycosis in early stage of infection.

Objectives：To investigate the pathological and clinical effect of preoperative arterial infusion chemotherapy on breast cancers.Methods:Twenty patients with breast carcinoma received regional arterial angiography by Seldinger's procedure followed by arterial infusion chemotherapy.Sixteen patients who didn't undergo preoperative chemotherapy were selected as controls.All the operation specimens were analyzed by the same pathologist.Results:Histological analysis of the two groups revealed the following results:① cancer tissue necrosis increased in the arterial chemotherapy group;②karyopyknosis,karyorrhexis coagulation and necrosis of cytoplasm around the vascular vessels as well as interstitial edema were found in the tumor tissue,invasion of inflammatory cells,intimal proliferation thrombus and inflammation of vessels could also be seen.All the changes were much severe in the infusion chemotherapy group than in the controlled group;Conclusions:Histological changes are significant after preoperative arterial infusion chemotherapy for breast carcinoma.

Objectives: To investigate the effect of bioelectrical impedance analysis in assessing upper limb lymphedema after mastectomy for breast cancer. Methods: Nineteen breast cancer patients with upper limb lymphedema received a micronized flavonoid fraction(Daflon 500 mg). Body composition was evaluated by multiple frequency bioelectrical impedance analysis, and the ratio of extracellular water/intracellular water (ECW/ICW) and extracellular water/total body water (ECW/TBW) were calculated. Results: At the end of the therapy, water content of upper limb with lymphedema( P

Objective:To investigate the significance of telomerase activity in infiltrating ductal carcinoma with respect to neoadjuvant chemotherapy effect. Methods:Fine needle aspiration (FNA) specimens were obtained from twenty nine patients with primary breast cancer pre neoadjuvant chemotherapy.All patients were given neoadjuvant chemotherapy(CEF regimen, Cyclophosphamide 500 mg/m 2 ; Epirubicin 50～60 mg/m 2 , Fluorouracil 500 mg/m 2 ) and were performed operation on post chemotherapy 3th day to 5th day,cytology and telomerase activity of specimens were analyzed. The telomerase activity was measured Telomerase PCR ELISA based on a polymerase chain reaction (PCR) assay known as TRAP (telomeric repeat and amplification protocol) assay. Results:The optic density (OD) of telomerase activityis is 1.172?0.501 pre chemotherapy whereas post chemotherapy that is 0.771 ?0.442 ( P

Objective To synthesize and fusion express the predicted T-cell epitopes of Schistosoma japonicum, and analyze their immunogenicities. Methods The plus and minus oligo-nucleic acid strands of epitopes P7, P17, P18 were synthesized following their DNA sequence, respectively. The Nco I restriction enzyme sites were added to the 5′ end of epitope gene and the Xho I restriction enzyme sites were added to the 3′ end of epitope gene. The plus and minus strand of each epitope gene was annealed to form double strand DNA fragments. Then the double strand DNA fragments encoding epitope peptide were cloned into the site between Nco I and Xho I of plasmid pET32c(+) to construct recombinant plasmid which was transformed into E.coli DH5?. The recombinant plasmid containing P7, P17, P18 genes respectively was identified by PCR, restriction digestion and DNA sequencing, and then transformed into E.coli BL21 (DE3) for expressing the fusion protein. The fusion protein of peptide-thioredoxin(Trx) was expressed by inducing with IPTG and analyzed with SDS-PAGE. The fusion proteins were purified with Ni2+ column affinity chromatography. Meanwhile, the peptides P7, P17, P18 were synthesized artificially following their amino acid se-quence. By using the purified epitope peptide fusion proteins and synthesized epitope peptides, the splenic cells of C57BL/6J mice immunized with ultraviolet-attenuated cercaria of Schistosoma japonicum were stimulated respectively. The stimulation activity of fusion proteins and synthesized peptides were assayed by detecting the incorporation rate of 3 H-thymidine. Results The double strand DNA fragments of epitopes P7, P17, P18 were successfully cloned to form recombinant plasmids, all of which could express a 20 kDa fusion protein. Both the fusion protein and synthesized epitope peptides of P7 and P17 were able to stimulate the lymphocyte cells to proliferation effectively. Conclusion The peptide P7 and peptide P17 are testified as T-cell epitopes of Schistosoma japonicum.

Objective To explore the effect of praziquantel on schistosomal ovum granuloma in the lung of mice.Methods Forty-eight mice were divided into 4 groups.Group A:first,the mice were injected with schistosomal ova hypodermicly in abdomen and 10 days later,injected with schistosomal ova intravenously in the cauda;Group B:in addition to the injection of schistosomal ova as the same of Group A,the mice were administered with praziquantel [300 mg/(kg?d)] for 3 days from the last day of the intravenous injection of the ova;Group C:in addition to the injection of schistosomal ova as the same of Group A,the mice were administered with praziquantel(75 mg/kg,B.i.d.)for 5 days weekly until the mice were sacrificed;Group D:the same as Group C but praziquantel was given to the mice from the 29th after the intravenous injection of the ova.Three mice of each group were sacrificed on the 7th,14th,28th,56th day after the intravenous injection of the ova and the lung tissues were fixed with formalin and the slices were HE stained.Fifteen-thirty pieces of schistosomal ovum granuloma were examined and their areas were measured and the mean areas of each group were calculated and compared.Results On the 7th,14th and 28th days after the intravenous injection of the ova,the mean area of schistosomal ovum granuloma in Group C was significantly less than that in Group A,and there was a significant difference between the two groups,P 0.05.On the 56th day,the mean areas of schistosomal ovum granuloma in Group B,C,D were significantly less than that in Group A,all P

Objective To express the cytosolic superoxide dismutase(SOD)of Schistosoma japonicum and analyze its antigenicity.MethodsThe DNA sequence of Schistosoma japonicum gene of cytosolic SOD was amplified by reverse transcription polymerase chain reaction(RT-PCR)and subcloned into the expression vector pGEX-4T-3 to construct a recombinant plasmid Sj SOD-pGEX-4T-3.This recombinant plasmid was transformed into component cell of E.coli BL21(DE3).The fusion protein of GST-SOD was expressed by inducing with IPTG and purification by affinity chromatography.The specific antiserum was prepared by immunizing the BALB/c mouse with GST-SOD fusion protein,and the immnuogenicity of GST-SOD was investigated by Western blot analysis.ResultsThe gene of cytosolic SOD was amplified successfully and subcloned into expression vector pGEX-4T-3 forming the recombinant expression plasmid Sj SOD-pGEX-4T-3.The fusion protein GST-SOD was expressed after the recombinant containing Sj SOD-pGEX-4T-3 being induced by IPTG.Immunizing the BALB/c mouse with the fusion protein GST-SOD produced high titer specific antiserum of 1∶12800 and the fusion protein GST-SOD was recognized by sera of severe infection rabbits.ConclusionsThe cytosolic SOD has been expressed successfully and has a preferable immunogenicity.

Objective To explore the protective effect of recombinant superoxide dismutase(SOD)fusion protein against the infection of Schistosoma japonicum Chinese strain.Methods The recombinant SOD fusion protein was expressed and purified with Glutathione sepharose 4B.C57BL/6J mice were immunized with the recombinant SOD fusion protein mixed with Freund adjuvant.Four weeks after the final immunization,the mice of the experiment and control groups were challenged with(45?2)S.japonicum cercariae.All the mice were sacrificed on the forty-fifth day after the challenge to calculate the worm reduction rate and egg reduction rate,and to observe the pathologic changes of liver tissue of the mice.Results The worm reduction rate was 35.63% and the egg reduction rate was 31.17% in the experiment group.The number of granuloma in the live tissue of the experiment group was less than that of the control group,and the mean diameter of single granuloma in the experiment group reduced by 22.32% compared with that of the control group.The IgG subclass levels of IgG1,IgG2a,IgG2b were higher than those of the control group.Conclusion The recombinant SOD fusion protein has a protective effect against Schistosoma japonicum infection.

Intestinal barrier dysfunction always accompanies cirrhosis in patients with advanced liver disease and is an important contributor facilitating bacterial translocation (BT), which has been involved in the pathogenesis of cirrhosis and its complications. Several studies have demonstrated the protective effect of Vitamin D on intestinal barrier function. However, severe cholestasis leads to vitamin D depletion. This study was designed to test whether vitamin D therapy improves intestinal dysfunction in cirrhosis. Rats were subcutaneously injected with 50% sterile CCl₄ (a mixture of pure CCl₄ and olive oil, 0.3 mL/100 g) twice a week for 6 weeks. Next, 1,25(OH)₂D₃(0.5 µg/100 g) and the vehicle were administered simultaneously with CCl₄ to compare the extent of intestinal histologic damage, tight junction protein expression, intestinal barrier function, BT, intestinal proliferation, apoptosis, and enterocyte turnover. Intestinal heme oxygenase-1 (HO-1) expression and oxidative stress were also assessed. We found that vitamin D could maintain intestinal epithelial proliferation and turnover, inhibit intestinal epithelial apoptosis, alleviate structural damage, and prevent BT and intestinal barrier dysfunction. These were achieved partly through restoration of HO-1 and inhibition of oxidative stress. Taken together, our results suggest that vitamin D ameliorated intestinal epithelial turnover and improved the integrity and function of intestinal barrier in CCl₄-induced liver cirrhotic rats. HO-1 signaling activation was involved in these above beneficial effects.
Animals ; Apoptosis ; Bacterial Translocation ; Cholestasis ; Enterocytes ; Fibrosis ; Heme Oxygenase-1 ; Heme ; Humans ; Liver ; Liver Diseases ; Olive Oil ; Oxidative Stress ; Rats ; Tight Junctions ; Vitamin D ; Vitamins