Objective: To explore antitumor responses induced by recombinant vaccinia viruses expressing a p53 antigenic peptide (rVV p53 M) and enhanced effect of recombinant vaccinia viruses expressing costimulatory molecule B7 (rVV B7). Methods: A 135 Cys to Tyr point mutation p53 transduced P815 mastocytoma (P815 mp53) was used as an experimental tumor and the p53 protein as the model of tumor associated antigen. rVV p53 M and rVV B7 were used as vaccine to test their induction of CTL and antitumor immunity. Results: Immunization of BABL/c mice with rVV p53 M could elicit specific CTLs, which could specifically lyse P815 mp53 cells. Immunization of mice with rVV p53 M could survive a part of mice challenged with 1?10 6 P815 mp53. Treatment with rVV p53 M could significantly prolong the survival of tumor bearing mice. Admixture at 1∶1 ratio of rVV p53 M and rVV B7 could enhance antitumor responses induced by rVV p53 M. Conclusion: Immunization with recombinant vaccinia virus expressing antigenic peptide is a useful alternative to peptide based vaccine. Costimulatory molecule B7 can enhance antigenic peptide to induce antitumor responses.

Objective: To explore antitumor responses induced by recombinant vaccinia viruses expressing a p53 antigenic peptide (rVV-p53M) and enhanced effect of recombinant vaccinia viruses expressing costimulatory molecule B7 (rVVB7). Methods: A 135 Cys to Tyr point mutation p53-transduced P815 mastocytoma (P815-mp53) was used as an experimental tumor and the p53 protein as the model of tumor associated antigen． rVV-p53M and rVV-B7 were used as vaccine to test their induction of CTL and antitumor immunity. Results: Immunization of BABL/c mice with rVV-p53M could elicit specific CTLs, which could specifically lyse P815-mp53 cells. Immunization of mice with rVV-p53M could survive a part of mice challenged with 1×106 P815-mp53. Treatment with rVV-p53M could significantly prolong the survival oftumor-bearing mice. Admixture at 1:1 ratio of rVV-p53 M and rVV-B7 could enhance antitumor responses induced by rVV-p53M. Conclusion: Immunization with recombinant vaceinia virus expressing antigenic peptide is a useful alternative to peptide-based vaccine. Costimulatory molecule B7 can enhance antigenic peptide to induce antitumor responses.

Objective To improve microbial specimen detection rate before therapeutic antimicrobial use.Methods A system of selective targeted management by clinical department was established,before management was as control group (July-September 2013),after management was as intervention group(October-December 2013),microbial specimen detec-tion in patients before antimicrobial use was compared between before and after management.Results Of all hospitalized pa-tients,11 254 received therapeutic antimicrobial agents,3 426 were sent specimens for microbial detection,the specimen detection rate was 30.44%;specimen detection rate in control and intervention group was 28.80% and 31.89% respective-ly ,the difference was significant(χ2 =12.71,P <0.05).3 716 patients(46.61%)received restrained antimicrobial therapy, and 1 418 (79.20%)received special antimicrobial therapy,compared with control group,the difference were both signifi-cant(χ2 =32.86,19.31,respectively,both P <0.05).Conclusion Applying selective targeted management can improve microbial specimen detection rate before therapeutic use of antimicrobial agents.

Objective This paper was to study the absorption and metabolism differences of intestine and liver for multicomponent licorice.Methods The components were identified with the UPLC-MS/MS. In situ closed-loop method was used to carry out the comparative experiments of absorption and metabolism differences between intestine and liver.Results 13 components were identified by UPLC-MS/MS. The absorption and metabolism results indicated some components in licorice water extract could be absorbed into blood and metabolism happened during this process. 14 metabolites were detected in the plasma sample. The hepatic metabolism results indicated many components could experience complex metabolism and more metabolites could be generated.Conclusions Liver was the major metabolism organ for licorice water extract and some components could be metabolized along with the absorption process in intestine. The absorption and metabolism differences between intestine and liver were significant.

ObjectiveTo analyze the characteristics of neonatal hyperammonemia and citrullinemia caused by argininosuccinate lyase (ASL) gene mutations, and to have a better understanding of this disease. MethodsA neonatal patient with the onset of hyperammonemia and citrullinemia admitted to the Department of Pediatrics of Peking University First Hospital on April 2, 2014, was retrospectively studied. Peripheral blood leukocyte DNA of the patient and his parents was collected to detectASS1,ASL andSLC25A13 gene mutations. The literature related to neonatal hyperammonemia, citrullinemia and argininosuccinic aciduria was reviewed. ResultsThe baby in this case appeared lethargic, had weaker crying and food refusal since three days after birth, and analysis of blood amino acid found a marked increase in blood ammonia (1 332μmol/L) and a significant rise in citrulline (759.12μmol/L). Sanger sequencing detection revealed compound heterozygous mutations in theASL gene (c.434 A>G, c.857A>C) and this c.857A>C mutation was the first reported case in China. This case of hyperammonemia and citrullinemia was confirmed as argininosuccinic aciduria caused by ASL gene mutations. A protein-limited diet and the treatment of arginine and L-carnitine were given. His blood ammonia decreased to normal level and there was a significant improvement in physical and intellectual progress at five months old. Unfortunately, he had an intestinal infection when he was over five months old and the blood ammonia level tested in the local hospital was 480μmol/L. Gradually there was a disturbance of consciousness, then coma, and he finally died after active rescue in the local hospital.ConclusionsHyperammonemia and citrullinemia in neonates are likely to be argininosuccinic aciduria and a gene mutation test may be helpful for diagnosis.

Objective To evaluate the clinical efficacy of pingyangmycin (PYM) injection on infantile hemangioma located in the parotid gland region. Methods Twelve patients were treated by intralesional injection of PYM. When necessary, the injections were repeated at an interval of one week, but not more than 3-4 sessions within a therapeutic period. Normally, the secondary therapeutic period was performed 1 month later. The general and local adverse responses were recorded and the clinical outcomes were assessed with a follow-up of 1 to 3 years. Results Complete clinical resolutions were achieved in 10 patients. 2 patients received one injection, 3 patients received 2 injections, 3 patients received 3 injections, and 2 patients received 4 injections. The remaining 2 patients with partial resolution received 6 and 7 injections respectively. No clinical recurrence was observed during the follow-up of 1 to 3 years. No ulcerations or postoperative sears in injection regions were presented. The function of facial nerve was remained normality in all patients. The systematic side effects included transient pyrexia and poor appetite appeared in partial patients. No allergy cases were found. Conclusion Treatment of infantile hemangioma located in parotid gland region with PYM injection reveals a high rate of complete clinical resolution, with fair cosmetic results and short treatment time, and it does not damage the facial nerve or form local scar.The treatment time of PYM injection seems to be positively related to size of the lesions.

OBJECTIVE:To establish an RP-HPLC method for content determination of s-omeprazole sodium and its related substances.METHODS:The separation of s-omeprazole sodium and the related substances was carried out on a Phenomenex Luna C18 column,the mobile phase consisted of methanol-0.033 mol?L-1 ammonium dihydrogen phosphate-triethylamine (58∶41.8∶0.2,adjusted to pH 7.0 by phosphate acid).The detection wavelength was 302 nm,the flow rate was 1.0 mL?min-1,the column temperature was 25 ℃,and the sample size was 20 ?L.RESULTS:The linear range of omeprazole sodium was 10～500 mg?L-1 (r=0.999 7).The average recovery rate was 100.27% (RSD=0.74%).The average content of the related substances in samples was 0.42%.CONCLUSION:This method is simple,accurate,specific and applicable for content determination of s-omeprazole sodium and its related substances.

Objective The expression of chemokine C-X-C motif ligand 13 (CXCL13) within liver in primary biliary cholangitis (PBC) patients is significantly increased, but its origin and mechanism is not clear yet.The study aimed to investigate the expression of CXCL13 in the liver of mice through establishing a mouse model of PBC.Methods C57BL/6 mice were randomly divided into experiment group (n=20) control group(n=10).The mice in the experimental group were intraperitoneally injected with polyriboinosinic polyribocytidylic acid (Poly I:C) while the mice in control group were injected with PBS of the same volume.The level of serum AMA was quantified by ELISA and intrahepatic inflammatory cells were assessed by HE staining.Kupffer cells, liver sinusoidal endothelial cells, and infiltrating lymphocytes in the liver of mice were collected by in situ perfusion enzyme digestion and magnetic bead separation methods.The transcriptional level of intrahepatic CXCL13 in liver tissues and cell subpopulations were detected by qPCR.Results The serum AMA titers of the mice in experiment group increased gradually with the prolonging of modeling time and the positive rates at the 4th, 8th, and 12th week after the first injection of Poly I:C were 5.9%, 52.9% and 76.5% respectively.While the serum AMA titers of the mice in control group were at a lower level through the modeling process, with only 2 mice presenting a little higher level above positive cutoff value at the 12th week.The results of HE staining in liver tissues of both groups showed that there were a great amount of intensely infiltrating inflammatory cells in the mice of experimental group while no inflammatory cell infiltration were found in the mice of control group.The separation purity of Kupffer cells and liver sinusoidal endothelial cells in the mice of experiment group tested by flow cytometry were 76%-80%, 68%-72% respectively.Compared with the CXCL13 mRNA level in Kupffer cells [2.34(0.22-8.64)], the expression levels in liver sinusoidal endothelial cells and infiltrating lymphocytes declined[0.27(0.03-1.64), 0.05(0-0.22), P<0.05].Conclusion The chemokine CXCL13 is predominantly produced by Kupffer cells in the liver of PBC mice established by Poly I:C injection.

Objective To explore the relationship between lecithin cholesterol acy ltransferase (LCAT) gene 608C/T and 511C/T polymorphisms and stroke in Chinese Han population in Hunan province. Methods One hundred fifty patients with cerebral infarction, 150patients with cerebral hemorrhage, and 122 age- and sex-matched healthy controls were selected.LCAT gene 608C/T and 511C/T polymorphisms were detected by using polyrnerase chain reaction, single strand conformation polymorphism, and restriction fragment length polymorphisms. Results The CT genotype frequency (14. 0% ) and T allele frequency (7. 0% )of the LCAT gene 608C/T in the cerebral infarction group were significantly higher than those in the control group (all P ＜0. 05), while there were no significant differences in the CT genotype frequency (7. 3% ) and T allele frequency (3.7%) between the cerebral hemorrhage group and the control group (P ＞ 0. 05). The CT genotype frequency (10. 0% ) and T allele frequency (5. 0% ) of the LCAT gene 511C/T in the cerebral infarction group were significantly higher than those in the control group (all P ＜0. 01), while there were no significant differences in the CT genotype frequency (3.3%) and T allele frequency (1.7%) between the cerebral hemorrhage group and the control group (P ＞0. 05). Conclusions The 608C/T and 511C/T polymorphisms may be associated with the occurrence of atherosclerotic cerebral infarction in Chinese Han population in Hunan province. They may be the predisposing factors for atherosclerotic cerebral infarction in this population; however, they are not associated with cerebral hemorrhage.

Objective To investigate the correlation between neonatal infectious disease and brain injury.MethodsClinical data of 1266 newborns with infectious diseases were collected from Peking University First Hospital from November 2005 to August 2010.The occurrence of brain injury was summarized.Related factors of brain injury caused by infection and the risk factors for severe brain injury were analyzed by Logistic regression model. Results Among the newborns with neonatal infectious diseases, the incidence of brain injury was 8.6％(108/1266), including 101 (8.0％)mild cases and seven (0.6％) severe cases. The incidence of brain injury for the newborns with severe infectious diseases was higher than those with mild infectious diseases [38.7％(29/75) vs 6.7％(79/1191),x2=92.787,P=0.000].The incidence of brain injury for the newborns withobviousinflammatoryreactionwassignificantlyhigherthanthosewithout [(13.0％(26/200) vs 7.5％ (77/1025),x2=6.544,P=0.011].Severe infection was independent risk factor for severe brain injury by Logistic regression model analysis (OR =15.750,95％ CI:1.756-141.281,P=0.014).ConclusionsIniectious diseases could cause injury on central nervous system,especially when there are severe infections or inflammatory reactions. The severer the infection,the severer the brain injury,especially when complicated by some factors such as asphyxia and hypoglycemia.