Objective To evaluate the feasibility and short-term outcome of laparoscopic operation for colorectal neoplasm in comparison with open operation procedure for colorectal neoplasm, laparoscopic operation for colorectal neoplasm may be critical in the evolving practice of medieine. Methods 234 cases of colorectal neoplasm were divided into two groups and was analyzed. 103 patients with colorectal neoplasm underwent laparoscopic operation (LCS), while 131 cases received open operation (OCS). Results The mean operating time in laparoscopic operation group was significantly longer than in open operation group (P <0.05). The blood loss was less. Time to pass flatus, time to ambulate and return of bowel function were restored earlier in laparoscopic operation group than that in open operation group (P <0.05). Duration of hospital stay were longer in open operation group than that in laparoscopic operation group (P <0.05). There was not significant difference in the length, distal margin, size of tumors and number of removed lymphatic nodes(P > 0.05) between the two groups. Laparoscopic colorectal resection is better in pathologic sample compared with the traditional open operation procedure. Conclusion Laparoscopic colorectal resection is secure and effective for colorectal neoplasm, and it is with lower blood loss during operation,earlier return of bowel function and shorter hospitalization, and provide better short-term outcome compared with the traditional open procedure.

Objective:To explore the concentration of monoamine neurotransmitter in serum and psychiatric symptoms such as anxiety and depression in infertility patients with and without PCOS(No-PCOS),and the relationship between them.Methods:30 infertility with PCOS were selected as experimental group(EG) and 30 infertility patients without PCOS as control group(CG).They were administered Symptom Checklist(SCL-90).Their monoamine neurotransmitter in serum were determined including norepinephrine(NE),3-methoxy-4-hydroxyphenylglycol(MHPG),5-hydroxytryptamine(5-HT),5-hydroxyindoleacetic acid(5-HIAA),dopamine(DA),homovanillic acid(HVA) and dihydroxy-phenyl acetic acid(DOPAC).Results:The findings indicated that the scores in anxiety and depression subscales of SCL-90 were significantly higher in the PCOS group than those in the No-PCOS(P

Objective To explore the value of predicting ovarian response using the antral follicle count in in vitro fertilization(IVF) cycle. Methods 54 patients in our infertility treatment center were observed, in which 6 patients had poor ovarian response and the other 48 patients had good ovarian response. The clinical data, duration and efficacy of treatment were compared between the two groups. Results The mean number of antral follicles and retrieved oocytes in the third day of menstruation in good ovarian response group was significantly higher than that in poor ovarian response group. The clinical pregnancy rate of the good ovarian response group was better than that of the poor one. Conclusions Monitoring the antral follicle count in both ovaries using vaginal ultrasound may predict ovarian response in IVF in the third day of menstruation.

Objective To determine the effect of Nuclear factor-erythroid 2-related factor 2 ( Nrf2 ) on acute hephrotoxicity induced by CCl4 in male rat.Methods 20 male Wistar rats were randomly divided into control group and CCl4 group, 10 rats in each group, another 10 male Wistar rats were transgenic rats microinjection through the carrier, obtained the Nrf2-tk gene integration and specific transgenic rats, as the CCl4 +Nrf2 integration group.The groups was given 1%polysorbate 80 for 4 days,Then the CCl4 and CCl4 +Nrf2 integration group were intraperitoneally injected with a single dose of CCl47.5 mg· kg-1 and were killed 24 h after CCl4 injection.The serum chemical parameters including asparate aminotransferase ( AST) ,alanine aminotransferase ( ALT) and lactate dehydrogenase ( LDH) were measured.Also malonaldehyde ( MDA) ,glutathione ( GSH) ,oxidized glutathione ( GSSG) levels in the liver as well as glutathione ( GSH)/oxidized glutathione ( GSSG ) ratios were detected. Histopathologic changes in the liver were examined. Results F1generation TK transgenic rats in liver and testis and other tissues and organs were not detected the transcription of Nrf2-tk, indicating that Nrf2-tk expression in tissues is specific good.Nrf2 significantly reduced serum AST, ALT and LDH levels in a dose-dependent manner.The results of MDA levels and GSH/GSSG ratios in liver and kidney showed that Nrf2 reduced CCl4-induced hepatic lipid peroxidation,and ameliorated glutathione depletion.The histopathologic results showed that Nrf2 restrained liver and kidney damage induced by CCl4 .Conclusion Nrf2 can effectively protect male rat from acute hepatotoxicity and nephrotoxicity induced by CCl4 .

Objective To explore clinical effect of small dose of glucocorticoid in the treatment of AECOPD patients with severe disease associated with low levels of cortisol.Methods72 patients with AECOPD in our hospital were randomly divided into control group and treatment group.The control group was treated with conventional AECOPD method,the treatment group was treated on the base of the treatment group with a small dose of corticosteroids,CRP, IL-6, TNF-α, FEV1, PCT and other indicators, as well as patients with ventilation, shock and mortality were compared after the end of treatment.ResultsThe time of non mechanical ventilation, the time of non-mechanical ventilation, and the time of non-shock were increased, the shock and the mortality was lower in the treatment group,(P<0.05);The CRP level of patients in the treatment group was lower(P<0.05);IL-6, TNF-α, PCT levels of patients in the treatment group was lower (P<0.05);FEV1, FVC and FEV1/FVC level in the treatment group were higher(P<0.05).ConclusionSmall dose glucocorticoid can improve the pulmonary function of patients with AECOPD complicated by severe disease, and alleviate the disease, significantly reduce the levels of inflammatory factors, promote the improvement of the lung function.

BACKGROUND:Through compounding hydroxyapatite and poly-DL-lactide, the mechanical properties, physical and chemical properties of the implants can be enhanced.
OBJECTIVE:To detect the effect of hydroxyapatite/poly-DL-lactide composite internal fixation screws in canine femoral condyle cancel ous bone fracture repair.
METHODS:Forty-two beagle dogs were operated to bilateral femoral condyle fracture models. The left side was fixed using hydroxyapatite/poly-DL-lactide screws as experimental group;while the right side was fixed with pure poly-DL-lactide screws as control group. After 2, 4, 8, 12, 24, 36 and 48 weeks, conditions of fracture were observed using X-ray, femoral and screw specimens were observed histopathological y, and the bending strength and the average molecular weight were detected. The biological absorption rate, intensity decay rate and biodegradation rate were calculated.
RESULTS AND CONCLUSION:After 2-48 weeks, bilateral fractures were fixed wel and new bone grew wel , but the biological absorption rate of the screws in the experimental group was lower than that in the control group (P ≤0.01). In the first 2, 4 weeks, the bending strength of the experimental screws was higher than that of the control screw (P ≤0.05), but the biodegradable speed was slower in the former one (P ≤ 0.05 or P ≤ 0.01). The pathological changes were similar in the two groups. After 48 weeks, the fractures were healed and bone tissue reconstruction was completed. Compared with the pure poly-DL-lactide screws, the hydroxyapatite/poly-DL-lactide composite internal fixation screws have better fixation effects, biocompatibility, mechanical properties and biodegradability.

Background and purpose: Pancreatic cancer is often diagnosed at advanced stage, therefore, chemotherapy remains the cornstone of treatment for advanced pancreatic cancer. However, no standard regimen has been established as second-line therapy for advanced pancreatic cancer. The purpose of the study was to evaluate the efifcacy and safety of albumin-bound paclitaxel plus S-1 for the treatment of advanced pancreatic cancer patients in second-line setting after the failure of gemcitabine treatment. Methods:Clinical outcomes of 19 patients with advanced pancreatic cancer were analyzed. These patients received albumin-bound paclitaxel plus S-1 as second-line therapy after the failure of gemcitabine treatment. Albumin-bound paclitaxel was administered at a dose of 125 mg/m2 over 30 minutes on day 1 and 8 of a 21-day cycle. From d1-14, all patients received oral S-1 40 mg/m2, twice daily. Results:All patients were available for evaluation. Of the 19 patients, 1 case got complete response (CR), 4 cases had partial response (PR) and 9 cases had stable disease (SD). The objective response rate (ORR) was 26.3%, the disease control rate (DCR) was 73.7%and the median progression free survival (PFS) was 5.2 months. The main toxicities include hematological toxicity, myodynia, gastrointestinal reactions, sensory neuropathy, fatigue and alopecia. Conclusion:The combination of albumin-bound paclitaxel and S-1 is effective and tolerated in the treatment of advanced pancreatic cancer patients who resistant to gemcitabine.

Objective To investigate changes of oxidative stress in the hearts and their roles in diabetic cardiomyopathy of rats.Methods Thirty six rats with diabetic cardiomyopathy were induced by streptozocin(STZ),and were randomly divided into three groups:(1) normal control (NC) group,normal control rats; (2) Diabetes maintain (DM) group,diabetic rats received protamine zinc insulin (PZI) 2 ～4 U/2 days; and (3) Diabetes treatment (DT) group,diabetic rats received PZI 9 ～ 12 U/kg body weigh/day.After 12 weeks,rats were killed,and the parameters including blood glucose,glycated hemoglobin a1c (HbA1c),total cholesterol (TC),and triglyceride (TG) were measured.Maleic dialdehyde (MDA),the total antioxidant capacity of the hearts,and activities of antioxidant enzymes in hearts including total superoxide dismutase (TSOD),catalase (CAT),and glutathione peroxidase (GSH-Px) were measured by chromatometry.The pathologic changes of heart tissues were studied by hematoxylin eosin (HE),periodic acid Schiff (PAS),and nitrotyrosine (NT) staining.Results After 12 weeks,parameters including blood glucose,HbA1c,TC,and TG were increased significantly in DM group relative to NC group or DT group.The level of heart MDA was elevated obviously in the DM group [NC group (7.82 ±0.62) nmol/mgprot,DM group (12.81 ± 1.35) nmol/mgprot,and DT group (8.20 ±0.85) nmol/mgprot].The total antioxidant capacity and activities of TSOD [(235.09 ± 14.94) U/mgprot],GSH-Px [(56.59 ± 4.96) U] were decreased significantly in the DM group.The level of CAT [(13.84 ± 2.88) U/mgprot] was increased obviously in the DM group.The cardial myocyte hypertrophy,myocyte steatosis,and PAS positive material could be found in the hearts of rats in DM group with HE and PAS staining.The expression of NT was much stronger in DM group than NC or DT groups.NT was less expressed in DT group,and was almost not expressed in the NC group.Conclusions Oxidative stress could be caused by diabetes in diaetic hearts and might play an important role in the etiology of diabetic cardiomyopathy.

Objective To understand the characteristics of minipigs infected withJapanese encephalitis virus(JEV).Methods After the brain tissues were treated, the pig brain tissue treatment solution was inoculated with BHK21 cells.Then, virus culture,indirect immunofluorescence assay, neutralization test, electron microscopic observation, and reverse transcription-polymerase chain reaction (RT-PCR) amplification of the new isolate E segment and PrM segment nucleotide sequence were performed and the genotype was identified.Results BHK21 cells were inoculated into 25 pigbrain tissues.Among them, three tissue-treated fluid couldinduce shrinkage and aggregation of BHK21 cells, and immunofluorescence staining showed strong green fluorescence response.The results of neutralization test showed that the neutralization titer of these three new isolates was 1:64, and the size of the virus particles was about 40nm under the electron microscope.The homology of both RT-PCR product sequencing results and E-segment of vaccine strain were 95%.Three new isolates were type GIII JEV.Conclusion The results ofthisstudydemonstrate that there is G III type Japanese encephalitis virus infection in the minipig farm.

AIM: To investigate the changes of oxidative stress in the kidneys and their roles in nephropathy in diabetic rats. METHODS: Diabetic rats were induced by streptozotocin (STZ). 36 rats were divided into three groups randomly: (1) NC group, normal control rats; (2) DM group, diabetic rats received protamine zinc insulin (PZI) 2U-4U/2 d; (3) DT group, diabetic rats received PZI 9-12 U/kg body weigh/day. 12 weeks later, rats were killed, blood glucose, blood cholesterol, serum creatinine, blood urea nitrogen, HbA1c, urinary creatinine, and urinary protein for 24 h were measured. The activities of antioxidant enzymes in renal cortex, including total superoxide dismutase (TSOD), Cu-Zn superoxide dismutase (Cu-Zn SOD), Mn superoxide dismutase (Mn SOD), catalase (CAT), glutathione peroxidase (GSH-Px), and maleic dialdehyde (MDA) were measured by chromatometry. RT-PCR was performed to detect the expression of different antioxidant enzymes mRNA. RESULTS: For all the targets we measured, there was no significant difference between NC and DT groups. Compared with the other two groups, the levels of blood glucose, cholesterol, trigalloyl glycerol, HbA1c in DM group increased significantly. The activities of TSOD, Cu-Zn SOD and CAT decreased significantly. The activity of GSH-Px increased significantly. There was no significant difference among the activities of Mn SOD in all three groups. The level of MDA in DM group was much higher than that in NC or DT group. The relative expression levels of GSH-Px and Cu-Zn SOD mRNA in DM group were higher than those in other two groups, while the relative expression level of CAT decreased. Mn SOD mRNA was expressed without significant difference in all groups. Compared with NC or DT group, urinary protein in DM group increased significantly, while creatinine clearance rate decreased. CONCLUSIONS: Hyperglycemia affected the expression of antioxidant enzymes. Oxidative stress was caused by hyperglycemia in diabetic rats and may be an important factor in the etiology of diabetic nephropathy.