Objective To explore the effect of formaldehyde on learning and memory and the activity of superoxide dismutase (SOD) in the cerebral tissues. Methods 40 ICR mice were randomly divided into four gropes: A-control group (NS was added into water bottle), B, C, D-three formaldehyde dose groups (0.1, 0.2, 0.4% formaldehyde solution were added into water bottles). After 30 days of treatment, the ability of learning and memory were evaluated by Morris watermaze test and step-down test and the activity of SOD in the cerebral tissues was determined. Results In the Morris watermaze test (the fifth day), escapelaten latence in group C[ (29.23?5.56)s] and D[ (37.36?7.39)s] were significantly longer than group A[ (21.65?5.81)s](P

This study was aimed to determine trace elements in Peach pulp . The wet digestion method and car-bonize acid dissolution method were applied to digest the sample, and flame atomic absorption spectroscopy was used to determine the content of trace elements (Fe, Cu, Mn) in Peach pulp . The results showed that the content is not consistent among different pretreatment methods. However, the metalion content among these three methods are in the order of Fe > Mn > Cu, with the average recovery rate between 92.6% and 119.6%. The RSD is less than 2.86%. It was concluded that this method is with high accuracy and stability as well as reliable accurate re-sults. It also proved that Peach pulp . is rich in Fe, Cu and Mn. It provides some useful information for further pharmacological study of Peach pulp .

The paper introduces the system design of internet platform in novelty assessment and selective dissemination of informa-tion of medical science and technology project in Zhejiang province, including the exploitation of environment , processing of novelty as-sessment and selective dissemination of information as well as main function design. This system has noticeable advantages, such as com-prehensive functions, multiple participation, transparent service process, which could finish the relevant work on the internet, improve the quality of information service and enhance the efficiency.

Objective To study the relationship between receptor interacting protein (RIP)1 and hepatocyte necropto?sis in isoniazid (INH) induced mouse model. Methods Kunming male mice were randomly divided into three groups. Con?trol group (C) received 0.3 mL of normal saline one time per day. INH group (INH) was injected intraperitoneally INH 100 mg/kg body weight, one time per day. Nec-1+INH group was injected intraperitoneally Nec-1 in 0.1%DMSO and 1 mg/kg body weight one time/12 hours, and INH was injected intraperitoneally at the same dose with that of INH group. All animals were treated for 7 days. Pathological changes of liver tissues were studied by HE staining. RIP1 expression was detected by immunohistochemical, Western blot and real-time PCR analysis. Levels of malondialdehyde (MDA), reactive oxygen species (ROS), glutathione (GSH) and superoxide dismutase (SOD) in liver homogenate were determined by colorimetric method. Re?sults Hepatocytes were arranged orderly in C group. The degeneration and necrosis of hepatocytes were found in Nec-1+INH group, and severe degeneration and necrosis of hepatocytes were found in INH group. Compared with C group, the ex?pression levels of RIP1, ROS and MDA were increased significantly, and the expression levels of GSH and SOD were de?creased significantly in INH group (P<0.05). INH-induced acute liver necroptosis was significantly alleviated after treat?ment with Nec-1. Compared with INH group, the expression levels of RIP1, MDA and ROS were significantly decreased, and the expression levels of GSH and SOD were significantly increased in Nec-1+INH group (P<0.05). Conclusion These re?sults suggest that RIP1 is involved in INH-induced hepatocyte necroptosis in mice. The inhibition of RIP1 expression might be a treatment strategy for prohibition of INH-induced acute liver necroptosis.

Objective To isolate and identify the pathogenic bacteria from peripheral blood of a patient with septicemia of unknown etiology and to analyze their drug resistance genes.Methods Two peripheral blood samples were collected from the patient after having fever.Several assays including culturing bacteria on blood agar plates by using streaking technique,Gram-staining of bacterial colonies and microscopic observation,VITEK 2-compact automatic bacterium detection and analysis system as well as a sequencing analysis of the 16s rRNA gene were performed to identify the bacterial pathogens in blood samples.Microdilution test was performed to detect the drug susceptibilities of isolated bacteria to antibiotics.Confirmatory tests were performed to detect the production of β-lactamase and extended spectrum β-lactamase by the isolated strains and the phenotypes of AmpC enzyme and carbapenemase.PCR was used to identify the β-lactamase-encoding genes in the isolated strains by using the primers of 19 common β-lactamase-,AmpC enzyme-and carbapenemase-encoding genes in Enterobacteriaceae strains and the primers of 21 annotated gene sequences encoding the β-lactamase of a Ralstonia mannitolilytica strain.The PCR products were sequenced and analyzed after T-A cloning.Results Ralstonia mannitolilytica strains were isolated from the two peripheral blood samples.The isolated strains were sensitive to ceftriaxone,cefepime,ciprofloxacin,ofloxacin,tigecycline and compound sulfamethoxazole (SMZ-TMP),but resistant to the other 11 tested antibiotics.Results of PCR amplification by using the primers of common genes encoding β-lactamase of Enterobacteriaceae strains were all negative.Fragments of genes encoding the β-lactamase of the isolated Ralstonia mannitolilytica strain were successfully amplified,which were TK49_09850,TK49_12955,TK49_14470,TK49_14495and TK49_18990.The sequences of the amplified gene fragments were not similar to those of the common β-lactamase-encoding genes in Enterobacteriaceae strains.Conclusion The patient was infected with Ralstonia mannitolilytica.The isolated Ralstonia mannitolilytica strain showed a high-level drug resistance with a noticeable diversity against different β-lactam antibiotics.The genes encoding β-lactamase of the isolated Ralstonia mannitolilytica strain were completely different to those of Enterobacteriaceae strains.

Objective To investigate the effect of glutamine on energy intake and prognosis of severe burn patients in differ-ent pathway.Methods Using retrospective study method,we brought the patients into our study from October 2010 to April 2014 in accordance with the inclusion criteria.Patients who were given the Gln before 5 days after injury through gastric bowel were brought into the EN group,others who were given the Gln after 5 days after the injury through vein were brought into PN groups. A total of 66 patients were included in this study,with 31 cases of EN group and 35 cases of PN group.Total energy intake,external and internal energy intake,nutrients heating,energy intake/energy consumption ratio,blood glucose control,insulin use and viscera damage(the blood urea nitrogen,creatinine,alanine aminotransferase,aspartate aminotransferase,total bilirubin,creatine kinase,lac-tate dehydrogenase),ICU days,hospital stays and mortality were observed in 1,2,3,4 weeks after injury.Results Within a month after the injury,the energy intake of patients in EN group were more than PN group,especially the energy from intestinal canal.Be-sides,the ICU days of patients in EN group were shorter than patients in PN group (all P <0.05).Other indicators of two groups of patients were no significant statistical difference(P >0.05).Conclusion Supplement of Gln may be more conducive to improve the intestinal function in patients with burns may be more conducive to improve the intestinal function in patients with burns,im-prove the degree of tolerance of enteral nutrition,increase energy intake and conducive to improving the prognosis of patients.

Aim To observe the effects of borneol on the pharmacokinetics of carbamazepine(CBZ) and 10,11-epoxide carbamazepine(ECBZ) in rabbits.Methods After ig administration of bornol and CBZ,the CBZ and ECBZ were determined with HPLC,then the pharmacokinetic parameters were obtained with 3P87 program on computer.Results In the CBZ-borneol combination group,the pharmacokinetic parameters of CBZ,T_(12(ka)),T_(peak) and AUC were increased,while Ka and CL were decreased.The parameters of ECBZ,T_(12(ke)) and T_(peak) were increased,while Ke was decreased.The ratio of CSF to plasma of ECBZ at the time of 0.5,1,2 hour after ig was increased.Conclusion Borneol significantly improved the bioavailability of CBZ,inhibited the metabolism of CBZ,and enhanced the ECBZ passing through blood brain barrier.

Objective To discuss the influencing factors of lead poisoning in children and adolescents in certain region of Yunnan and to provide evidence for effective prevention measures.Methods Venous blood samples of 1379 children and adolescents were collected and lead levels in the blood were tested by atomic absorption spectrometer.Children and adolescents with lead level higher than 100 μg/L were diagnosed with lead poisoning.Results The lead level ranged from 1 μg/L to 450 μg/L,with the average level of 82.87 ± 66.97 μg/L,and 341 children and adolescents were diagnosed with lead poisoning,with the poisoning rate of 24.7％.The differences of lead poisoning rates by gender,age,and place of residence were significant (P＜0.05).Gender,age,and distance between place of residence and mining area were the main influencing factors of the lead poisoning rate.Conclusion The blood lead poisoning rate of children and adolescent are high in this region.Boys,children in preschool age and children living closer to the mining area are susceptible to blood lead poisoning.

Objective To study the effect of assistive functional rehabilitation exercise on cardiac functioning of patients with chronic heart failure (CHF). Methods Sixty CHF patients were divided randomly into a treatment group (the rehabilitation group) and a control group, with 30 in each group. All the patients were administered routine therapy. In the treatment group, the patients were administered rehabilitation exercises with the assistance of a electric equipment made by the authors, daily for 5 days a week for a total of 3 months. The New York Heart Association (NYHA) cardiac function grading, the left ventricular ejection fraction(LVEF), the left ventricular end diastolic diameter (LVEDD) and the brain natriuretic peptide (BNP) level in plasma as well as the 6 min walking range were observed in both groups before and after treatment. Results After 3-months of treatment, the NYHA grading, LVEF, LVEDD, BNP level in plasma and 6 min walking range were all significantly improved in both groups when compared with those before the treatment, with the treatment group improved to a significantly larger extent than the control group ( p<0.05 ). Conclusion Assistive rehabilitation exercise in addition to the routine therapy can significantly help improve the cardiac function in CHF patients.

Objective To explore the effect of Erbin deficiency in MDA-453 cells on trastuzumab(Herceptin) resist-ance .Methods The specific short hairpin RNA ( shRNA) targeting Erbin was designed and cloned into plasmid pSuppres-sor, which was subsequently transfected into MDA-453 human breast cancer cells .After being selected by G418, MDA-453 cells stably expressing Erbin shRNA were obtained and nominated as MDA-453-Erbin sh.The MDA-453 cells express-ing control shRNA ( MDA-453-NC) were used as control cells .The expression of Erbin at the protein level in MDA-453-NC and MDA-453-Erbin sh cells was analyzed by Western blotting .Cell proliferation and colony formation assays were em-ployed to investigate the effect of Erbin knockdown on the sensitivity of MDA -453 cells to trastuzumab in vitro.The levels of Erbin expression in human breast cancer tissue and normal breast tissue samples were evaluated by immunohistochemistry . Results MDA-453 cells, in which Erbin expression was stably knocked-down, were established.Deficiency of Erbin in MDA-453 cells could antagonize the anti-proliferation effects of trastuzumab in vitro.The level of Erbin expression was de-creased in some breast cancer tissue samples compared with normal breast tissue samples .Conclusion Erbin deficiency may induce the resistance of breast cancer cells to trastuzumab therapy .