82 cases were treated with acu—moxibustion and tra-ditional materia medica,while 42 cases were treatedwith routine western drugs.Results revealed that theamelioration of clinical symptoms,signs and total ef-fectiverate in the traditional modality group was betterthan the western drug group.

The amount of the funds supported by National Natural Science Foundation of China (NSFC) played as an important role in judging the capabilities and tendency of scientific research.It is believed that the supporting rate of NSFC is promoted via scientific management policies.To explore the tendency and potential of scientific management plan in the first affiliated hospital of Xi'an Jiaotong University,we analyze the projects supported by NSFC of our hospital from 2002 to 2011.Accordingly,our outcomes show the supporting rates of variable programs from NSFC were similar to the average for whole nation.The inspiring policies encourage our staff to put their passion on the scientific research and funding application.The quality of bidding documents for NSFC is partially improved by the suggestions and lecture of invited experts who took the charge of evaluation of funds from NSFC for actively guide,so as to increase goal average.Of note,a cohort of the researchers at the age below 45 did the main contribution to scientific research developing and programs application from NS-FC.Furthermore,we will pay more attention to reach 3 point following:1.the policy of matching fund to strengthen the competition of the researchers all over the nation.2.the policy of Integrated research resources for the major programs.3.further improvement of projects supervision.

N)compared with B/HongKong/330/2001.Conclusions H1,H3 and B virus were circulated in Hebei from 2005 to 2006.Recent viruses were changing in genetic characteristics,while influenza B viruses varied more obviously.

Objective To understand the genetic characterization of HA1 gene of influenza A H3N2 viruses circulated in recent years in Hebei.Methods Viral RNAs of 25 H3N2 strains were extracted and amplified by Reverse Transcription Polymerase Chain Reaction (RT-PCR).The products of PCR were purified and sequenced,and the sequences were analyzed though biometic software.Results Several amino acid substitutions located in antigenic sites or receptor binding sites were found more in the isolates than the current vaccine virus or the isolates from previous year.Amino acid substitution was found in 3,140,142,144,145,158,159,189,192,193,198,204,225,226 and 227 positions in the isolates during 2003-2008,more amino acid substitutions took place in antigenic determinant A,B and receptor binding site (RBS).New phylogenetic branches appeared continuously during 2003-2008.The H3N2 strains of the same year almost clustered in the same group on the phylogenetic tree.Conclusions Amino acid substitutions continuously occurred in the HA1 genes in influenza A H3N2 viruses isolated in Hebei from 2003 to 2008,it is meaningful to pay close attention to the HA1 variation in order to prevent and control influenza.

Objective To investigate the viral etiology and the epidemilogy of acute upper respiratory tract infection in Hebei Province from 2013 to 2015,providing scientific basis for diagnosis,prevention and control of the respiratory tract infection.Methods l 551 throat swab samples of the acute upper respiratory infection patients from four hospitals in Hebei Province were collected,Multiplex real-time PCR was used to detect 15 kinds of respiratory tract viruses for all specimens after nucleic acids extraction.Results Totally 714 positive samples were obtained from 1 551 samples,with a positive rate of 46.03％.Human rhinovirus(186,11.99％)was detected as the most common viral species,followed by human parainfluenza 3(167,10.77％),respiratory syncytial virus (122,7.87％),adenovirus (108,6.96％),influenza B virus (56,3.61％),human metapneumovirus(40,2.58％),influenza A virus(39,2.51％),human boca virus (38,2.45％),human parainfluenza 1 (35,2.26％),human coronavirus-229E/NL63 (33,2.13％),human enterovirus (32,2.06％),human parainfluenza 4(31,2.00％),human coronavirus-OC43 (30,1.93％),and human parainfluenza 2(11,0.71％).176 cases (11.35％) were detected as co-infection.The infection rate(56.07％) of under 5 years old group was higher than that of other groups.Conclusions The predominant respiratory viruses,who are responsible for acute upper respiratory tract infections in Hebei Province,are HRV,PIV3,RSV,ADV and IFV.Each virus possess the specific epidemiological feature.

OBJECTIVE：To study the effects of limonin on immune function and apo ptosis-related factors expression in MFC gastric cancer bearing model mice. METHODS ：MFC gastric cancer bearing model was established by inoculating MFC gastric cancer cells into the right armpit of mice. After modeling ，model mice were divided into model group ，cyclophosphamide group （positive control ，25 mg/kg）and limonin high-dose ，medium-dose and low-dose groups （100，50 and 25 mg/kg），with 10 mice in each group. Other groups were given relevant medicine intragastrically ，once a day ，for consecutive 14 days，except that model group was given 0.5％ sodium carboxymethyl cellulose intragastrically. Before administration and after last administration ，the body weight of mice was measured ；spleen，thymus and tumor tissue were taken after the last administration to calculate the spleen index，thymus index and tumor inhibition rate. The percentage of CD 4+ and CD 8+ T lymphocytes ，CD4+/CD8+ ratio were detected by flow cytometry. The expression of immune function related indexes （IL-2，IL-10，IFN-γ）in serum were detected by ELISA. RT-PCR and Western blot assay were adopted to detect relative mRNA and protein expression of apoptosis-related factors [cytochrome C （Cyt-C），Bcl-2，Bax] in tumor tissue of mice. RESULTS ：There was no significant difference in body weight among the other groups except that of cyclophosphamide group was decreased significantly ，compared with model group （P＜0.05）. Inhibitory rate of tumor were （58.16 ± 7.07）％ ，（37.09 ± 4.26）％ ，（27.30 ± 3.64）％ ，（15.13 ± 2.95）％ in cyclophosphamide group ，limonin high-dose ，medium-dose and low-dose groups. Compared with model group ，spleen index ， thymus index ，the percentages of CD 4+ and CD 8+T lymphocyte cells ，CD4+/CD8+ ratio，serum levels of IL- 2 and IL- 10，relative mRNA and protein expression of Bcl- 2 in tumor of mice in cyclophosphamide group as well as the expression of IL- 10，relative mRNA and protein expression of Bcl- 2 in limonin groups were decreased significantly （P＜0.05）. The expression of IFN-γ，relative mRNA and protein expression of Cyt-C and Bax of cyclophosphamide group as well as spleen index （except for low-dose group ）， thymus index ， the percentage of CD 4 + and CD 8 + T lymphocytes，CD4+/CD8+ ratio，the expression of IL- 2 and IFN-γ，and relative mRNA and protein expression of Cyt-C and Bax in limonin groups were increased significantly （P＜0.05）. CONCLUSIONS ：Limonin can inhibit tumor growth in MFC gastric cancer bearing model mice ，and the side effects are relatively weak. Its mechanism is related to the improvement of immune function and the induction of apoptosis.

Objective:To clarify the infection and epidemic characteristics of the human metapneumovirus (HMPV) in Chinese patients with febrile respiratory syndrome (FRS), and to provide important baseline data for clinical diagnosis, treatment, prevention and control of HMPV-induced respiratory tract diseases in China.Methods:FRS cases from January 2009 to June 2021 in 9 provinces in China, including Beijing, Hebei, Jilin, Shandong, Shaanxi, Xinjiang, Anhui, Guangdong, Hunan were retrospectively analyzed for their respiratory samples, clinical and epidemic data.The respiratory samples were detected for HMPV by quantitative real-time PCR.Results:A total of 11 660 cases were tested for HMPV, involving 296 (2.54%) HMPV-positive cases.Among 296 HMPV-positive cases, 218 were single HMPV infection, and 78/296 (26.35%) were co-infected with one or more respiratory viruses.HMPV mainly affected children under 5 years of age (3.10%), and in this population, the proportion of pneumonia in HMPV co-infection cases was significantly higher than that of single HMPV infection.HMPV could be detected all year round, which was more popular in winter and spring, with the peak of HMPV epidemic in March.Conclusions:HMPV is one of the important pathogens causing acute respiratory infection in children, showing a clear seasonal epidemic.HMPV can be infected alone or in combination with other respiratory viruses, which may increase the risk of pneumonia in children.