The study was performed to investigate the prevalence of nasal carriage of Staphylococcus aureus (NCSA) in patients with chronic renal failure(CRF) and its relationship with incidence of bacteremia in patients on hemodialysis(HD). The preventive effect of external application of mupirocin ointment on HD patients with venous catheters was also observed. Nasal swabs were taken from 114 CRF patients hospitalized from Nov. 2000 to April 2002. Samples from 42 patients in CCU with normal renal function and 48 staffs working in HD centre were also analyzed. External application of mupirocin ointment near the exit sites of catheters was performed as prophylaxis in HD patients with venous catheters. The prevalence of SA bacteremia was compared with that of the historical control group from Jan.1999 to Oct.2000. The results showed that the prevalence of NCSA in CRF patients was 14% (16/114). Nasal swab cultures were all negative in CCU patients, as well as staffs working in the HD centre. The mean frequency of SA bacteremia in HD patients with NCSA was 0 12/catheter month, compared to 0 in HD patients with no NCSA( P

Objective To establish the primary cat intestinal epithelial cells(IECs)culture methods and construct the cD-NA library for the following yeast two-hybrid experiment,so as to screen the virulence interaction factors among the final host. Methods The primary cat IECs were cultured by the tissue cultivation and combined digestion with collagenase XI and dispase I separately. Then the cat IECs cultured was identified with the morphological observation and cyto-keratin detection ,by using goat anti-cyto-keratin monoclonal antibodies. The mRNA of cat IECs was isolated and used as the template to synthesize the first strand cDNA by SMARTTM technology,and then the double-strand cDNAs were acquired by LD-PCR,which were subsequently cloned into the plasmid PGADT7-Rec to construct yeast two-hybrid cDNA library in the yeast strain Y187 by homologous recom-bination. Matchmaker?Insert Check PCR was used to detect the size distribution of cDNA fragments after the capacity calcula-tion of the cDNA library. Results The comparison of the two cultivation methods indicated that the combined digestion of colla-genase XI and dispase I was more effective than the tissue cultivation. The cat IECs system of continuous culture was established and the cat IECs with high purity were harvested for constructing the yeast two-hybrid cDNA library. The library contained 1.1× 106 independent clones. The titer was 2.8 × 109 cfu/ml. The size of inserted fragments was among 0.5-2.0 kb. Conclusion The yeast two-hybrid cDNA library of cat IECs meets the requirements of further screen research,and this study lays the foundation of screening the Toxoplasma gondii virulence interaction factors among the cDNA libraries of its final hosts.

Objective To investigate the causes,diagnosis and treatment of small intestine bleeding.Methods Sixty-eight cases of small intestine bleeding from January 2000 to June 2010 were retrospectively analyzed.Among all cases,4 underwent routine hemostatic treatment under colonoscopy,40treated with open surgery and 24 patients with laparoscopic therapy.Among them,57 cases underwent part resection for some small intestine,completely laparoscopic resection of diverticula was performed in 7patients.Results Neoplasms was the leading cause of small intestine bleeding,accounting for 48.5％ (33/68)in these patients,followed by small intestine diverticulum accounted for 29.4％ ( 20/68 ),intestinal infective diseases accounted for 14.7％ ( 10/68 ) and vascular disease accounted for 7.4％ ( 5/68 ).Conclusion The clinical manifestations of small intestinal bleeding showed no specific signs.Neoplasm,intestine diverticulum and intestinal infective diseases are the most common causes of small intestinal bleeding.Small intestinal bleeding can be diagnosed in intraoperative colonoscopy.Surgery is the most effective treatment for small intestinal bleeding.

Objective To establish and evaluate the method to collect the rat gingival crevicular fluid (GCF)by using absorbent paper points, and to lay foundation for analysis on GCF.Methods 20 healthy male rats were selected and randomly divided into GCF group and saliva group.The GCF of the right upper molar gingival trough of the rats in GCF group and the saliva of the rats in saliva group were collected by using 1 5# absorbent paper points.The SDS-PAGE analysis and abundance detection were applied to analyze the protein bands of the samples in two groups.Results The SDS-PAGE analysis identified the proteins at 77 000,66 000,55 000,51 000,and 28 000,especially 66 000 in GCF group.While saliva group had lower brightness protein bands at 66 000,60 000, and 48 000.The data of protein abundance of 66 000 between two groups had statistically significant difference (P<0.05).Conclusion The number and types of the protein bands are different between GCF Group and saliva group,so using 15# absorbent paper points can collect the rat GCF successfully.

Objective To study the protective effect of ROP2 nuclei acid vaccine in mice.Methods Forty-two BALB/c mice were divided into three groups.Each mouse in experiment group was injected with 50 ?g recombinant plasmid pc-DNA3-ROP2 through musculus quadriceps fexoris.In control groups,each mouse was injected with 50 ?g blank plasmid pc-DNA3 and with 50 ?l PBS respectively.All mice were immunized for three times with an interval of three weeks.The volume was doubled for the final injection in the two plasmid groups.Blood,spleens and lymph nodes of 4 mice in each group were taken for the detection of CD4+,CD8+ T cells and cytokines 2 weeks after the final immunization.The rest mice in 3 groups were challenged with 500 tachyzoites of Toxoplasm gondii RH strain for further observation.Results The vaccine induced strong cellular and humoral immune response.The titer of antibody in serum was high after inoculation and recognized ROP2 protein antigen expressed in vitro.The lymphocyte phenotype was analyzed.CD4+ T cells proliferated sharply(69.5?3.4)%,and the ratio of CD4+/CD8+ increased considerably by(4.69?1.32)%(P

Objective To explore the biological function of rhoptry protein 38(ROP38)of Toxoplasma gondii,and to iden?tify the reactogenicity of the recombinant protein(rROP38). Methods The ROP38 was amplified by RT?PCR from T. gondii RH strain,and was cloned into prokaryotic expression vector pET?28a(+). The recombinant plasmid was transformed into E. co?li BL21(DE3)competent cells. Then the rROP38 was analyzed by SDS?PAGE and identified by Western blot. Results SDS?PAGE showed that rROP38 was efficient expression with a molecular weight of about 43 kD. Western blot showed that rROP38 reacted with antibody of His tag or human positive antibody,which indicated that ROP38 had good reactogenicity and could be a serological diagnostic antigen. Conclusion The study successfully obtains the rROP38 of T. gondii with good reactogenicity.

ObjectiveTo construct the mental health benefits of physical activity of Tai Chi and framework for college students based on International Classification of Functioning, Disability, and Health (ICF), and to systematically review the effect of physical activity of Tai Chi on anxiety, depression and sleep quality of college students. MethodsRelevant literatures about the health outcomes on anxiety, depression and sleep quality of college students participating in physical activity of Tai Chi were retrieved from databases of Web of Science, PubMed, Medline, Scopus, CNKI, Wanfang data, from the establishment to November 10th, 2022, and screened and reviewed. ResultsTen randomized controlled trials were included finally, from China and U.S.， involving 960 participants (aged 16.4 to 40 years). The main sources were from journals about physical activity and health, with publication dates from 2016 to 2021. The quality of the included literatures was evaluated using the Physical Therapy Evidence Database (PEDro) scale with a mean score of 6.3. The main mental health problems of college students mainly focused on depression, anxiety, high stress, and poor sleep quality. The physical activity of Tai Chi included 24 simplified Tai Chi and Chen style Tai Chi. The frequency of physical activity of Tai Chi was mainly 1 to 6 times a week, 45 to 90 minutes (60 minutes mostly) a time, for 4 to 18 weeks. The health benefits of Tai Chi on anxiety, depression, and sleep quality for college students in the ICF were mainly in the affective function (b152), psychomotor function (b147), energy and drive function (b130), and sleep function (b134). The beneficial outcomes of physical activity of Tai Chi involved reducing anxiety, alleviating depressive symptoms and reducing stress. Compared with physical activity of Tai Chi, physical activity of Tai Chi with the addition of a twenty-four-pattern Taijiquan theory course was more effective in improving depression levels in patients with mild and moderate depression. Tai Chi also can help to improve sleep quality, shorten the time to sleep, and reduce sleep disturbances and daytime dysfunction. ConclusionA PICO framework of Tai Chi for the health benefits of college students has been constructed using ICF. Tai Chi engaged in by college students are mainly 24 simplified Tai Chi. The frequency of physical activity of Tai Chi is 45 to 90 minutes (60 minutes mostly) a time, 1 to 6 times a week, for 4 to 18 weeks. The physical activities of Tai Chi can benefit in reducing anxiety and depression of college students and improving the quality of sleep.

Trauma is the leading cause of death for people under 40 years old in the world. At present, the rescue and treatment system of trauma patients in China is not yet well established, and the mortality of trauma patients is higher than those in the developed countries. Improving the treatment system is the key to reducing the trauma mortality. In order to innovate the service mode of trauma first aid, further promote the establishment of regional trauma first aid system, improve the ability of trauma treatment, reduce the mortality and disability rate of trauma patients in Jiangxi Province, recently Health Commission of Jiangxi Province and the First Affiliated Hospital of Nanchang University have reached a consensus on the establishment of Jiangxi trauma first aid center. In order to provide reference for the construction of trauma treatment system, the author analyzes the following aspects including functional positioning, basic requirements, organization management, and evaluation of core indicators.