A series of multinuclear diethylenetriamine ligands were synthesized and used as artificial nuclease enzyme model. Target compounds were characterized by 1H NMR, 13C NMR, IR and ESI-MS. Preliminary studies on the cleavage of pUC19 DNA in the presence of metal complexes have also been performed and the results revealed that these complexes could act as powerful catalysts for the cleavage of pUC19 DNA after 48 h under physiological conditions. The hydrolytic cleavage mechanism of DNA plasmid by title compound was confirmed by T4 DNA ligase experiment.

Objective To investigate the ability of decision-making under risk condition in benign epilepsy children with centrotemporal spikes (BECT).Method Seventy-eight BECT patients and seventyfive healthycontrols were studied by Iowa Gambling Task (IGT) with inexplicit probability and Game of Dice Test (GDT) with explicit probability.Results (1) There was a significant difference in IGT task scores between the two group (t=-2.56,P＜0.05).The total number of advantageous choices in IGT were lower in BECT group (49.35±5.38) than that in healthy control group (52.24±6.23).BECT group (-1.41 ± 10.60) performed worse on task than healthy control group (4.43±11.88),and the difference was statistically significant (t=-3.21,P＜0.05).The control group scored higher on Blockl,Block4 and Block5 than that of BECT group (P＜0.05).(2) There was no significant difference between the BECT group (4.42±7.74) and the control group(5.49±6.81) in the GDT test scores (t=-0.91,P=0.37).(3) Pearson correlation analysis showed that there was no significant correlation between the age,age of onset,education,seizure frequency and onset duration and the score of IGT and GDT (r =-0.091-0.274,all P ＞ 0.05).Conclusion There is no significant decision-making disability in children with BECT under the condition of certain risk probability,while there is significant impairment under the condition of uncertain risk probability.The decision-making disability may be associated with impaired frontal lobe function.

OBJECTIVE: To review the characteristics changes of calcium phosphate cement (CPC) as drug delayed release carrier before and after carrying different drugs, analyze dynamic principle and influential factors of drug delayed release system, and summarize new advances of CPC in animal experiments and clinical studies.DATA SOURCES: A computer-based online search of CNKI (www.cnki.net/index.htm) and PubMed (http://www.ncbi.nlm.nih.gov/PubMed) was performed for articles published between 1985 and 2009 with the key words of "calcium phosphate cement, CPC, drug delivery system, release" in Chinese and English.DATA SELECTION: Articles highly related with CPC; articles concerning CPC as drug delivery system. Repetitive articles were excluded.MAIN OUTCOME MEASURES: Changes in physico-chemical properties and drug release dynamics of CPC as delivery carrier of different drugs.RESULTS: CPC is an outstanding skeletal defect restorative material. Considering physico-chemical properties, drug release dynamics and histocompatibility, CPC is good delayed release carrier of drugs. However, its clinical application is limited only in bone defect repair of unloading sites due to its bad compressive strength and adhesivity. Therefore, studies on these aspects require exploration.CONCLUSION: CPC as a drug delivery system is a novel administration method. It can repair bone defect and release drug to achieve favorable treatment effects. CPC has been extensively used in osteomyelitis, bone tuberculosis, bone tumor, bone fracture, bone nonunion, and artificial joint replacement.

Objective To report the experience on the ureteroscopic treatment of ureteral fibro-epithlial polyp by Holmium:YAG laser resection.Methods Of five cases,the polyp was located in the upper 1 third of the ureter in 2 cases,and in middle 1 third or ureter in 2 cases,in lower 1 third of ureter in 1 case.The length of the polyps ranged from 3 to 16 cm.Three patients presented with flank pain,4 with hematuria and 1 with hydronephrosis.Five patients underwent rigid ureteroscopic treat-ment.TUR was performed in the 2 polyp cases with prolapsing from the ureteral orifice.A Holmium:YAG laser was used to resect ureteral polyps.At the end of the procedure,a 7 F double-J ureteral stent was placed and indwelling for 6- 8 weeks.Results All operations were successfully done.The pathologic diagnosis were fibroepithelial polyp.Histologically,the polyps were composed of a central fibrovascular core surrounded by hyperplastic benign urothelium.The stroma of polyp consis-ted of fibrous connective tissue with minimal cellular infiltration,and occasional epithelial cell nests were seen.The average length of hospital stay was 3 d (range 2 to 5).The mean follow-up was 24 months (range 3 to 51),and all patients remained no recurrence.One patient developed a ureteral stricture 3 months after the treatment,and relieved by endoscopic incision by Holmium:YAG laser.Conclusion Endoscopic management of ureteral fibroepithelial polyps could be a treatment modality with minimal morbidity and good treatment results.

Objective To explore the changes of mTOR signaling in LPS/D-gal-induced acute hepatitis in mice . Methods Twenty-six healthy adult female ICR mice were divided into two groups:the control group and experimental group, 13 mice in each group .LPS/D-gal was used to induce acute hepatitis in the mice .The survival of mice was moni-tored within 24 hours after LPS/D-gal challenge .At 6 hours after challenge , samples of serum and liver tissue were collect-ed for further analysis.Results Injection of LPS/D-gal resulted in acute death of the mice within 24 hours.At 6 hours post LPS/D-gal injection , the blood levels of ALT and AST were significantly increased .The mRNA expression of inflammatory cytokines Tnfa and Il6 was up-regulated in LPS/D-gal-induced hapatitis , in which DNA fragmentation and activation of caspase-3 were subsequently observed .Immunoblot analysis showed that both mTOR pathway and NF-κB pathway were ac-tivated.Unexpectedly , inhibition of mTOR signaling could neither decrease the apoptosis in the liver nor increase the sur -vival of mice .Conclusions The results of the present study indicate that mTOR signaling may play pleiotropic roles in the pathogenesis of LPS/D-gal-induced hepatitis .

Objective To investigate the characteristics of attention networks impairment in benign epilepsy children with centrotemporal spikes.Methods The attention network test was performed in benign epilepsy children with centrotemporal spikes (n =75) and normal controls (n =75) on the efficiency of three anatomically defined attention networks:alerting,orienting,and execrtive control.Results The correct rate of attention network test was significantly lower in benign epilepsy children with centrotemporal spikes (95.77％ ± 5.63％) than that in normal controls (98.55％ ± 1.80％ ; t =4.063,P ＜ 0.05).The total average response time was significantly longer in benign epilepsy children with centrotemporal spikes ((946.87 ± 199.82) ms) than that in normal controls ((729.00 ± 146.75) ms ; t =-7.611,P ＜ 0.05).The orienting network effect (29 (12,56)ms) was lower in benign epilepsy children with centrotemporal spikes than in normal controls (51 (21,78) ms; Z =-2.771,P =0.006).The executive control network effect was higher in benign epilepsy children with centrotemporal spikes (80 (50,105) ms) than in normal controls (57 (25,88) ms; Z =-2.146,P =0.032).However,the difference in alerting network effects between the two groups was not statistically significant (P ＞ 0.05).Logistic regression analysis showed that the age on onset of the disease was an independent risk factor for the correct rate of attention network test and the total average response time (OR =1.830,95％ CI 1.193-2.807,P =0.006 ; OR =1.635,95％ CI 1.176-2.275,P =0.003).Conclusions The benign epilepsy children with centrotemporal spikes have impairment of attention networks.The age on onset of the disease has a significant impact on the attention of children with rolandic epilepsy.

Objective To reduce the turnaround time for laboratory diagnosis of bacteremia, the feasibility of rapid identification and susceptibility testing using samples taken directly from positive blood culture bottles was evaluated. Methods The growth of microorganisms in blood culture bottles was screened by the BACTEC 9000 blood culture system. 65 positive blood culture bottles containing gram-negative bacteria were adopted to test. Culture fluid was injected into BD SST vacutainer and centrifuged to pellet blood cells. After collecting required McFarland units, they were cultured on Phoenix 100 NMIC/ID-4(identification-gram-negative bacteria and susceptibility testing) cards using 0.25 McF and 0.5 McF methods respectively. They were also evaluated by the standard method, involving subculture tests from positive blood culture bottles. Results 63 of 65 gram-negative bacteria (96. 9% ) were correctly identified with 0. 25 McF method. 59 of 65 gram-negative bacteria(90.8% ) were correctly identified with 0.5 McF method. For antimicrobial susceptibility testing, the 0.25 McF direct method had an agreement rate more than 94% , the 0.5 McF method was more than 85.7% and direct blood sample KB method was more than 93.8% compared to the standard method. But the overall minor error rate in susceptibility testing of direct blood sample KB method is higher than other methods. Conclusion Applying 0. 25 McF and 0. 5 McF rapid identification and susceptibility test was practical. During to possessing more prominent advantages, laboratory put the 0. 25 McF direct method into practice had a timely, remarkable significance.

Mercury-containing preparations are widely used in surgery department of traditional Chinese medicine and have made remarkable achievements. But they are toxic to human kidney, nerve, immune, etc. Smilacis Glabrae Rhizoma is sweet, tasteless and neutral in nature and able to enter liver and stomach channels and detoxify mercury poisoning. This article summarizes the mercury poisoning and the detoxification effect of Smilacis Glabrae Rhizoma in ancient records, pharmaceutical studies and clinical application, in order to provide ideas and methods for the safe use of mercury-containing preparations in surgery department of traditional Chinese medicine.
Drugs, Chinese Herbal ; therapeutic use ; Humans ; Inactivation, Metabolic ; Liliaceae ; chemistry ; Liver ; drug effects ; metabolism ; Medicine, Chinese Traditional ; Mercury Compounds ; adverse effects ; pharmacokinetics ; therapeutic use ; Mercury Poisoning ; prevention & control ; Plants, Medicinal ; chemistry ; Rhizome ; chemistry ; Stomach ; drug effects ; metabolism

Objective To evaluate clinical use of tigecycline in hospital patients. Methods Basic diseases, pathologic examinations, concurrent medication, therapeutic efficacy and side effects of 40 patients in Lishui Central Hospital of Zhejiang Province from January 2012 to December 2014 were analyzed retrospectively. Results The effective rate of patients using tigecycline for anti-infection treatment in hospital was 42. 5%. The rates of rational use, basically rational use and irrational use were 17. 5%, 77. 5% and 5. 0%, respectively. Adverse drug reactions occurred in 6 cases of tigecycline use (15. 0%). Conclusion Clinical use of tigecycline in inpatients was basically reasonable in this hospital. The clinical curative effect of tigecycline was good in a variety of infections caused by sensitive bacteria. However, the incidence of adverse drug reactions was high. Attentions should be paid in clinical application.