Objective To explore the clinical characteristics and drug sensitivity of newborn pneumonia of klebsiella pneumoniae,and investigate the positive rate of extended-spectrum ? lactamases(ESBLs)in klebsiella pneumoniae.Method Sixty-seven cases of sputum samples newborn pneumonia of klebsiella pneumoniae from Jan.2003 to Dec.2005 were collected.Bacteria identification and drug sensitivity test were performed.At the same time,ESBLs were detected.Results The clinical characteristics of newborn pneumonia of klebsiella pneumoniae were non special,and the positive rate of ESBLs in klebsiella pneumoniae was 17.91%.The klebsiella pneumoniae was 100%sensitivie to carbopenems,but resistant to commonly used ?-antibiotics such as penicillin and cephalosporin.ESBLs negative strains had higher drug sensitivity than ESBLs strains.Conclusions Partial klebsiella pneumoniae are ESBLs strains and insensitive to commonly used antibiotics.In order to decrease ESBLs strains,the antibiotics treatment shall be used appropriately and the selection of antibiotics shall be guided by the results of drug sensitivity tests.

This paper reviews the recent advances in recombinant expression and purification of defensins, including the choice of host cells, vectors and expression strategies in prokaryotic and eukaryotic cell ex- pression systems, as well as the status of purification processes. By summarizing the problems existed in the production and clinical applications of defensins, the authors here also pointed out the research directions for defensins, and conceived the prospects for its exploitation in the future.

Benzene ; poisoning ; Chronic Disease ; Female ; Humans ; Middle Aged ; Occupational Diseases

Objective To study whether solasodine hydrochloride (SBHL) could enhance the effect of arsenic trioxide in inducing apoptosis and affecting telomerase activity in cervical cancer HeLa cells. Methods Using cell culture methods, cervical cancer HeLa cells were cultured in vitro. The optimal concentration of SBHL was determined by MTT method from 0, 10, 20, 40, 80, 160, to 320 μmol/L. HeLa cells were grown in improved RPMI1640 supplemented respectively with arsenic trioxide(5 μmol/L As2O3), As2O3(5 μmol/L)+ SBHL( 40 μmol/L) and none (control group). The growth morphology of HeLa cells was observed under phase contrast microscopy after culture for 24, 48, and 72 h. Apoptosis of HeLa cells was determined under transmission electronic microscopy. The method of MTT was used to study the cell survival percentage. The technique of flow cytometry was used to measure cell cycle and cell apoptosis percentage. The method of tartrate-resistant acid phosphatase-enzyme linked immunosorbent assay (TRAP-ELISA) was used to determine telomerase activity of HeLa cells. Results Under phase contrast microscopy, in control group HeLa cells were round, densely packed; in As2O3 group the numbers of the cells were less, cell spacing increased; in As2O3 + SBHL group the cells shrinked significantly, nuclear fragmented as a petal-like, gap became larger. Under transmission electronic microscopy, there were rich microvillus on the cell surface in control group, cell intervals clear, immature connections, and the intervals did not close. The structure of the mitochondria in the cytoplasm was integrated. Most of the chromatin in the nucleus were, euchromatin and characteristics of apoptosis with heterochromatin increased and the chromatin condensed into masses, on the boundary of nuclear membrane. The microvillud on the cell surface were ruptured and decreased in As2O3 + SBHL group. The chromatin condensed into masses. The formation of apoptotic bodies was observed. The difference was statistically significant between groups in cell survival percentage at 24, 48, 72h(x2 = 10.39 , 13.88 , 17.21,respectively, all P < 0.05). Cell survival percentage in SBHL + As2O3 group (52.80%) was significantly less than that of As2O3 group(77.51%, x2 = 9.29, P < 0.05) at 72 h. In cell cycles, the difference was statistically significant between groups in C1 phase and S phase(F = 7.46,22.14, all P < 0.05), respectively. Compared with , control group[ (41.57 ± 1.56)%, (50.45 ± 2.37)%], cell percentages in S phase in As2O3 + SBHL group[(20.06 ± 4.98)%] and As2O3 group[(27.10 ± 5.32)%] were decreased(P< 0.05 or < 0.01), while cell percentage in C1 phase was increased[(58.70 ± 5.18)%, (69.67 ± 4.17)%, P< 0.05 or < 0.01]. The difference was statistically significant between groups in apoptotic percentage of HeLa cells (F = 4.01, P < 0.05). Compared with control group[ (1.18 ± 1.40)%], apoptosis percentage was significantly increased in As2O3 + SBHL group and As2O3 group [(21.08± 1.22)%, (6.04±2.53)%, P< 0.05 or < 0.01], respectively, and As2O3 + SBHL group was higher than As2O3 group(P < 0.01). The difference was statistically significant between groups in telomerase activity (F = 21.28, P< 0.05). Telomerase activity was inhibited in As2O3 group(1.214 ± 0.621) and As2O3A + SBHL group(0.865 ± 0.284) compared to control group (2.107 ± 0.057, all P < 0.05), and telomerase activity in As2O3 + SBHL group was lower than that of As2O3 group (P < 0.05). Conclusions SBHL enhances the effect of As2O3 in inducing apoptosis in HeLa cells, which is related to its inhibiting telomerase activity in HeLa cells.

Adolescent ; Child ; Female ; Glomerulonephritis, IGA ; diagnosis ; pathology ; Humans ; Male ; Prognosis

Adrenoleukodystrophy ; genetics ; therapy ; Humans ; Lovastatin ; pharmacology

Arsenic Poisoning ; Child ; Female ; Humans ; Hypercalciuria ; complications

Adult ; Humans ; Lead Poisoning ; etiology ; Male

Objective To study the effects of 2,2',4,4'-tetrabromodiphenyl ethers(PBDE-47)single exposed and combined with 2,2',4,4',5,5'-hexachlorobiphenyl(PCB153)on learning and memory ability and the uhrastrncture of hippocampal CA1 region in rats.Methods Neonatal SD rats(CL grade)were randomly divided into groups,9 male and 9 female in each,then were exposed to single PBDE-47 at doses of 1,5,10 mg/kg and combined with PCB153 at dose of 5 mg/kg,through gavage for one time. Soya oil was used as the solvent control.The learning and memory ability and ultrastructure of neurons in hippocampal CA1 region were examined respectively 2 months after treatment.Results In the low dose groups(1 mg/kg PBDE-47 and 1 mg/kg PBDE-47+ 5 mg/kg PCB153 treated group),the ultrastructure of neurons in hippocampal CA1 region were as normal as that in the control group.As the dose increasing,in 5 mg/kg PBDE-47 group,the endoplasmic reticulum appeared swelling,expansion and degranulation.In 5 mg/kg PBDE-47 plus 5 mg/kg PCB153 group,the mitochondria appeared swelling,the ridge ruptured,the periplast puffed,and then the cytoplasm condensed.In the high dose groups(10 mg/kg PBDE-47 group and 10 mg/kg PBDE-47 plus 5 mg/kg PCB153 group),the neurons showed acutely denatured,the periplast puffed,the cell organelle dissolved and the mitochondria vacuolizated.The interaction between PBDE-47 and PCB153 on the latency period and the general pathway was presented in place navigation test(P

Objective To assess the experience in the diagnosis and treatment of duodenal trauma.Methods The clinical data of 58 patients with duodenal trauma who were admitted to the Chongqing Emergency Medical Center from March 1994 to March 2013 were retrospectively analyzed.There were 47 patients with blunt injury and 11 with penetrating injury.The surgical procedure was selected by patient's condition and extent of injury combined with the clinical symptoms,imaging examination,abdominal puncture and the Organ Injury Scale grading system of the American Association for the Surgery of Trauma (AAST-OIS).All patients were followed up through outpatient examination and telephone interview till September 2013.Results Seventeen patients were diagnosed as with duodenal trauma before operation,and 41 patients were diagnosed during the operation.The injury of the first part of the duodenum was observed in 7 patients,second part in 28 patients,third part in 17 patients and fourth part in 6 patients.According to the AAST-OIS,7 patients were with grade Ⅰ injury,17 in grade Ⅱ,20 in grade m,9 in grade Ⅳ and 5 in grade Ⅴ.The 58 patients received operation,including 23 with simple suture,4 with serosa section,hematoma evacuation and repair,7 with pedicled ileal flap to repair duodenal defect,5 with resection of ruptured intestine and end-to-end anastomosis,12 with Roux-en-Y duodenojejunostomy,2 with gastrojejunostomy,4 with pancreaticoduodenectomy,1 with doudenal,choledochal and pancreatic duct extensive drainage.Forty-eight patients were cured successfully and 10 patients died,including 4 died of complications of the duodenal trauma.The duodenal stenosis,duodenal fistula and abdominal abscess were the main complications.Six patients were lost to follow-up and 42 patients were followed up from 6 to 36 months.There were 3 patients with gastrointestinal tract defect and obstructive symtoms,with a missing of complications at postoperative month 6 to 12.One patient with pancreaticoduodenal fistula were cured by conservative treatment at postoperative month 3 and the other patients were well survived.Conclusions Abdominal puncture and imaging examination such as CT are effective methods for the diagnosis of the duodenal injury.Surgical procedure selection should be based on the type and range of the injury.Effective duodenal decompression and complete peritoneal drainage are important for the success of surgery.