Animals ; Dioxins ; toxicity ; Humans ; Liver ; drug effects ; Polychlorinated Dibenzodioxins ; toxicity

Objective To identify the spectrum of pathogenic microorganisms of urinary tract infection and the drug resistance in a hospital setting. Methods The pathogenic microorganisms isolated from 3117 mid-stream urine samples of patients admitted in Hangzhou First People's Hospital from 2005 to 2007 and their drug resistance results were retrospectively analyzed. Results Bacteria were the most prevalent microorganisms in the urinary tract infection, and followed by fungus, mycoplasma and chlamydia. Escherichia eoli accounted for the largest proportion of gram-negative bacteria, in which the ESBLs positive strains accounted for 51.2%, and their drug resistance rate was much higher than that of ESBLs negative strains. Main gram-positive coccobacteria was all sensitive to vancomycin, and relatively sensitive to nitrofurantnin and ampicillin. Conclusions Escherichia coli continue to prevail upon the spectrum of pathogenic microorganism of the urinary tract infection, and the fungus, mycoplasma and chlamydia infections are rising. Antibacterial agents should be used under the guidance of drug sensitivity test, and the combined use should be avoidd.

Objective To evaluate the clinical efficacy and safety of chemotherapy weekly in the chemoradiotherapy of cervical cancer.Methods Between Jan 2003 and Oct 2007,168 patients with stage Ⅲ B squamous cell carcinoma of the uterine cervix in Chongqing Cancer Hospital were divided into two groups randomly.The observation group,total 86 patients receiving radiotherapy concomitant with weekly cisplatin and taxol;the matched group,total 82 patients,receiving radiotherapy concomitant with cisplatin plus taxol every 3 weeks.There were no statistical difference in the clinical and pathological characteristics between the two groups. We compare the 5 years survival rate and side reaction of the two groups.Results The 5 years survival rate of the observation group and the matched group were respectively 52.3%(45/86)and 42.7%(35/82),in which there was no significant difference (P >0.05).The response rate(CR+PR)were respectively 94.2%(81/86)and 92.7%(76/82)in the observation group and the matched group,in which there was no significant difference (P >0.05).Grade Ⅲ acute gastrointestinal toxicities (nausea and vomi-ting)in the matched group were exactly higher than that in the observation group [19.5%(16/82)vs.8.1% (7/86),P <0.05]. Moreover,Grade Ⅲ myelosuppression in the matched group were exactly higher than that in the observation group [20.7%(17/82) vs.9.3% (8/86),P <0.05].there were no significant difference of the incidence of the radiocystitis,radiation proctitis and radio-dermatitis between the two groups.But the Radiotherapy completion time in the matched group were exactly longer than that in the observation group [(61.12±6.71)days vs.(54.72±4.76)days,P <0.05].Conclusion The toxicity of the observation group was lower than the matched group.Moreover the efficacy of observation group is similar to the matched group.

AIM:To study the application of ultrasonic extraction in process of extracting diosgenin from Dioscorea zingiberensis C.H.Wright,and to evaluate its merits.METHODS:A new process of ethanol extracting and hydrochloric acid hydrolysis was provided to extraction diosgenin,and five different extraction methods were studied and compared,and the reaction mechanism was discussed.RESULTS:The ultrasonic extraction method was more efficient.Compared with the traditional water-hydrolylis,extraction rate was 15 percent higher,dosage of hydrochloric acid was registered 90 percent decrease,and the production was purer.CONCLUSION:The grinding pretreatment of Dioscorea zingiberensis is help to enhance the effects of ultrasonic extraction,the method has some advantages in efficiency,energy-saving and low pollution.

Objective To investigate the value of modified loop ileostomy in laparoscopic low and superlow radical resection of the rectal cancer with reservation of anus.Methods The clinical data of 108 patients who received laparoscopic low and super-low radical resection of rectal cancer with preservation of anus at the Subei Hospital of Jiangsu Province from January 2010 to June 2012 were retrospectively analyzed.Fifty-three patients who received preventive ileostomy were in the ileostomy group,and 55 patients who did not receive preventive ileostomy were in the non-ileostomy group.The operation,incidence of complication and follow-up of the 2 groups were analyzed.All data were analyzed using the t test,chi-square text or Fisher exact test.Results The operation time and blood loss were (185 ± 14)minutes and (31 ± 26)ml in the ileostomy group,and (154 ± 12)minutes and (28 ± 19)ml in the non-ileostomy group,with no significant difference between the 2 groups (t =2.34,1.82,P ＞ 0.05).The time to first flatus,time to liquid diet intake,time to pelvic drainage tube removal,duration of hospital stay,hospital costs were (1.1 ± 0.3) days,(1.1 ± 0.2) days,(5.2 ± 1.0) days,(7.2 ± 1.4) days,(3.0 ± 0.2) ×104 yuan in the ileostomy group,and (4.2 ± 0.6) days,(4.3 ± 0.6) days,(8.4 ± 3.9) days,(12.9 ±4.4)days,(3.8 ±0.7) × 104 yuan in the non-ileostomy group,with significant differences between the 2 groups (t =7.25,28.12,15.34,34.01,7.83,P ＜ 0.05).The incidences of postoperative complications and anastomotic fistula were 5.7％ (3/53) and 0 in the ileostomy group,and 21.8％ (12/55) and 12.7％ (7/55) in the non-ileostomy group,with significant differences between the 2 groups (P ＜ 0.05).Conclusion Modified loop ileostomy in laparoscopic low and super-low radical resection of rectal cancer can effectively reduce the incidence of anastomotic fistula,and helps the recovery of patients.

Cell Proliferation ; drug effects ; Cells, Cultured ; Epidermis ; cytology ; drug effects ; Humans ; Polychlorinated Dibenzodioxins ; pharmacology

Objective Aim to explore the effect of hyperglycemia on the expression of glucose transporter 1 (GLUT-1)in rats at the acute phase of traumatic brain injury.Methods Adult male SD rats were randomly divided into 3 groups: normal control group, traumatic brain injury group and insulin treated group.The blood glucose concentration of the rats was measured before and after injury.The expression of GLUT-1 gene and protein in the injured and uninjured cortex was detected by reverse transcription polymerase chain reaction (RT-PCR) and western-blot.The apoptosis in the injured and uninjured cortex were detected by TUNEL staining.Results The blood glucose concentration increased markedly in traumatic brain injury group.The expression of GLUT-1 gene and protein in the injured cortex decreased in both the traumatic brain injury group and the insulin treated group.In contrast, the expression of GLUT-1 gene and protein significantly increased at 12 h, 24 h, 48 h, 72 h after injury in the insulin treated group compared with control(P＜0.01).The number of apoptotic cells in the insulin treated group were significantly larger than that in the traumatic brain injury group at each time point(P＜0.01).However, The number of apoptotic cell death remained unchange in the uninjured cortex in each group(P＞0.05).Conclusions The hyperglycemia after traumatic brain injury may increase the apoptotic cells in the injured brain through decreasing the expression of GLUT-1.

Objective To analyze the relation of hypermethylated secreted frizzled-related protein 2 (SFRP2) gene in feces and peripheral blood of colorectal cancer(CRC) patient with Dukes stages and histological types,and to evaluate SFRP2 gene for screening and judging the pathogenetic condition of CRC.Methmls Methylation-specific PCR assay was performed to analyze SFRP2 gene promoter methylation status in a blinded fashion in tumor tissues,stool and pefipheral blood samples taken from 169 CRC patients,63 patients with adenoma,46 with hyperplastic polyp and 30 endoscopically normal subjects.Results SFRP2 gene Was hypermethylated in 88.2%.65.1%and 45.7% of CRC.adenoma and non-adenomatous polyp tissues,in 84.0%,46.0% and 32.6%of corresponding fecal samples,and in 66.9%,6.4%and 2.2% of corresponding peripheral blood samples,respectively.In contrast,no methylated SFRP2 gene was detected in mucosal tissues and peripheral blood of normal controls,while two cases of matched fecal samples from normal controls were detected with hypermethylated SFRP2.Moreover,no significant correlation were observed between SFRP2 hypermethylation and clinicopathological features including sex,age,size,location and Dukes stage,but there was a significant correlation between SFRP2 hypermethylation and tumor difierentiation and infiltration.SFRP2 hypermethylation in peripheral blood of CRC patients was positively correlated with the Dukes stage. Condusions Hypermethylation of SFRP2 gene in feces works as a molecular biomarker for CRC screening.The hypermethylation of SFRP2 gene is positively related with Dukes stage.

BACKGROUND:Gelatin-chitosan-hydroxyapatite-minocycline biomimetic nanocomposite materials were developed in our previous studies. OBJECTIVE:To observe the capability of gelatin-chitosan-hydroxyapatite-minocycline biomimetic nanocomposite materials in the repair of rabbit radius defects. METHODS: Thirty healthy adult New Zealand rabbits were selected to make critical-size lacunar bone defects of the upper radius (15 mm×6 mm). Then, the rabbit models were randomized into experimental group (n=15), autogenous bone graft group (n=10) and blank group (n=5). Gelatin-chitosan-hydroxyapatite-minocycline biomimetic nanocomposite materials were implanted into radial bone defects in the experimental group. Bone defect in blank group was implanted without any materials; in the autogenous bone graft group, the contralateral radius with same length was taken and implanted into the defect. General observation, histological observation and X-ray observation were performed respectively at 2, 4, 8, 12 weeks postoperatively. RESULTS AND CONCLUSION:At 12 weeks after operation, the experimental group showed obvious new blood vessels at the defect region, complete bony union and disappearance of the composite implant, but lamelar bone structure appeared, smal blood vessels were visible, the edge of new bone was connected to the original bone edge, exhibiting a continuity of bone, the bone density was slightly lowered, and the defect region became unobvious. In the autogenous bone graft group, bony union and trabecular bone reconstruction were distinct, the lamelar bone became mature, the medulary cavity was recanalized, the fracture line disappeared completely, and the bone density was completely consistent with that of the original bone. In the blank group, there was no obvious bone formation, which led to bone nonunion, and there were a great amount of fiber tissues and inflammatory cel infiltrated. To sum up, the gelatin-chitosan-hydroxyapatite-minocycline biomimetic nanocomposite material can obviously promote the repair of critical-size bone defects, and the repairing effect is basicaly the same with that of autologous bone grafting.

Objective To identity the risk factors for supine hypotension syndrome (SHS) after spinal anesthesia in parturients.Methods A total of 204 parturients,scheduled for elective cesarean section,were divided into either control group or SHS group depending on whether or not SHS (systolic blood pressure [SBP] in the upper extremity decreased by ＞ 30 mmHg or decreased to ＜ 80 mmHg) developed after spinal anesthesia.The baseline patient characteristics such as age,body height and weight,gestational weeks and biparietal diameter were recorded.Supine stress test (SST) was performed.Heart rate,blood pressure in upper and lower extremities,perfusion index,pleth variability index and intravesical pressure were recorded when patients were in supine position and in left lateral position before spinal anesthesia.The risk factors of which P values were less than 0.05 would enter the multi-factor logistic regression analysis to stratify the risk factors for SHS.Results Among the 204 patients,99 cases developed SHS after spinal anesthesia,and the incidence was 48.5％.Logistic regression analysis showed that maternal body weight,biparietal diameter,the difference in SBP between upper and lower extremities in supine position,the difference in SBP in upper extremities caused by changing position and positive SST were risk factors for SHS after spinal anesthesia (P＜0.05 or 0.01).Conclusion Maternal body weight,biparietal diameter,the difference in SBP between the upper and lower extremities in supine position,the difference in SBP in upper extremities caused by changing position and positive SST are risk factors for SHS after spinal anesthesia in parturients.