Objective To investigate the effect of pseudolaric acid B(PLAB) on growth of human gastric carcinoma cells in vitro.Methods The expression of PPAR? was detected by RT-PCR;the effect of PLAB on cell growth was tested by MTT;Hoechst33342/PI and DNA gel electrolysis were employed to examine apoptosis;cell cycle was checked by flow cytometry.Results When treated with 0.1～10 ?mmol/L PLAB for 72,the proliferation of MGC803 cells was significantly inhibited.The proportion of MGC803 cells at G2 phase was significantly increased when treated with 10 ?mmol/L PLAB after 48 h,and showed an apparent G2 phase arrest.After treatement with PLAB for 72,typical apoptotic changes were observed.The expression of PPAR? was at a low level in MGC803 cells and up-regulated when treated with 10 ?mmol/L PLAB for 48 h(P

OBJECTIVETo investigate the relationship between chronic pyelonephritis (CPN) and immune function, and the therapeutic mechanism of Yishenkang granule (YSKG).

METHODSOne hundred and twenty patients of CPN were divided into 3 groups randomly, the YSKG group (treated with YSKG), the control A group (treated with Sanjin tablet) and the control B group (treated with western medicine). Serum levels of immunoglobulin (Ig), complement 3 (C3), interleukin-2 (IL-2), peripheral T-lymphocyte subsets, and urinary secretory immunoglobulin A (sIgA) were determined before and after treatment with monoclonal antibody assay, agar diffusion method, radioimmunoassay (RIA), and radioimmuno-equilibrium method, and compared with normal control.

RESULTSThere were disorders of T-lymphocyte subsets in CPN, lowering of serum Ig, C3 and urinary sIgA, and increase of blood IL-2 (P < 0.05 or P < 0.01). These abnormalities could be normalized after YSKG treatment.

CONCLUSIONFunctional disorders of cellular and humoral immunity exist in CPN patients of chronic stage, YSKG could correct the immune functional disorder, control the recurrence of CPN effectively and alleviate the immunopathological damage.

Adult ; Chronic Disease ; Complement C3 ; metabolism ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Immunoglobulin G ; blood ; Interleukin-2 ; blood ; Male ; Middle Aged ; Pyelonephritis ; drug therapy ; immunology ; prevention & control ; T-Lymphocyte Subsets ; drug effects

Osteonecrosis is a common disease, mainly affecting femoral head. Good animal models are helpful in research on the pathologic mechanism of osteonecrosis and the exploration of effective treatment. Although it is relatively easy to establish animal models of early osteonecrosis of femoral head using various approaches, it is difficult to develop an animal model that mimics the full range of osteonecrosis of femoral head. In this paper, we reviewed the current researches on experimental animal models of osteonecrosis, with an attempt to provide evidences for choosing the appropriate animal models and find the way of future development.
Animals ; Disease Models, Animal ; Osteonecrosis

This study sought to investigate the in vivo antiviral effect of amantadine (AM) and biphenyl dimethyl dicarboxylate (DDB) on hepatitis B virus (HBV) in HBV replication mice. HBV replication-competent plasmid was transferred into male BALB/c mice by using hydrodynamics-based in vivo transfection procedure to develop HBV replication mouse model. The model mice were matched by body weigh, age and serum levels of hepatitis B e antigen (HBeAg) and were divided into four groups: AM group, DDB group, AM+DDB group and NS group, with the last one as control, and the mice of each group were administered corresponding agent orally twice a day, in a medication course lasting 3 d. On the third day, the mice were sacrificed 4-6 h after the last oral intake. HBV DNA replication intermediates in liver were analyzed by Southern blot hybridization. The serum hepatitis B surface antigen (HBsAg) and HBeAg were detected by enzyme linked immunosorbent assay (ELISA). Compared to the animals in the control group, HBV DNA replication intermediates in liver and HBsAg and HBeAg in serum from the AM and AM plus DDB group of mice decreased, and there was no difference between these two groups of mice. The levels of HBV DNA intermediate from liver and the serum HBsAg and HBeAg between the control and DDB group, however, were not obviously different. In conclusion, the inhibition effect of AM on HBV was detected, but treatment with DDB for 3 days did not influence the viral replication and expression of HBV in the HBV replication mice.
Amantadine ; pharmacology ; Animals ; Antiviral Agents ; pharmacology ; DNA Replication ; DNA, Viral ; biosynthesis ; Dioxoles ; pharmacology ; Disease Models, Animal ; Hepatitis B ; virology ; Hepatitis B Surface Antigens ; blood ; Hepatitis B e Antigens ; blood ; Hepatitis B virus ; drug effects ; physiology ; Male ; Mice ; Mice, Inbred BALB C ; Plasmids ; Transfection ; Virus Replication ; drug effects

Objective To investigate whether gut microbiome dysbiosis and translocation occurred in experimental uremia,and whether they consequently contribute to microinflammation.Methods Health male SD rats were randomly divided into uremic group and sham group.Uremic group were operated for 5/6 nephrectomy to establish uremic models,while sham group were only operated for nephrocapsulotomy.Postoperative blood,livers,spleens,and mesenteric lymph nodes (MLNs) were subjected to bacterial 16S ribosomal DNA amplification to determine if bacteria were present.Bacterial genomic DNA samples from the MLNs and colon were amplified with specific primers designed by the 16SrRNA sequence of the species obtained from blood,livers and spleens.Pyrosequencing was used to analyze the ileum and colonic microbio.me of each subject.Intestinal permeability to 99mTc-DTPA,plasma hs-CRP,and IL-6 were measured.Results Bacterial DNA in extraiutestinal sites and altered colonic microbiomes at the phylum,family,and genus levels were detected in some rats in the uremic group.Bacterial genomic DNA in MLNs and colon were obtained by primers specific for bacterial species observed from blood,livers,and spleens of identical individuals.Intestinal permeability,plasma hs-CRP,and IL-6 levels were statistically higher in the uremic group compared with that in sham group(all P ＜ 0.05).Conclusion Gut microbiome dysbiosis occurs and presumably bacteria translocate to the systemic and lymph circulation,thereby contributing to microinflammation in experimental uremia.

BACKGROUND:Transforming growth factor β1 (TGF-β1) and interleukin 1β (IL-1β) have been reported to play an important role in the occurrence and development of primary osteoarthritis. OBJECTIVE:To investigate the association between gene polymorphisms of TGF-β1 and IL-1β and primary knee osteoarthritis. METHODS: Han and Uyghur elderly populations in Xinjiang Uygur Autonomous Region, China were surveyed on the prevalence of osteoarthritis, followed by allotted to osteoarthritis and health groups according the symptoms and radiography. Genotyping TGF-β1-509C/T and -1348C/T and IL-1β-511C/T was performed to analyze the relationship between the gene polymorphisms of TGF-β1 and IL-1β and osteoarthritis. RESULTS AND CONCLUSION:Alleles T and C with genotypes CC, CT and TT were detected in both two groups. In the Uygur population, the genotype frequency of TGF-β1-509C/T and IL-1β-511C/T showed significant difference between osteoarthritis and health groups (P < 0.05). In the Han population, the genotype frequency of TGF-β1-1348C/T showed significant difference between two groups (P < 0.05). These results suggest that the Uygur individuals carrying TT genotype of TGF-β1-509C/T and IL-1β-511C/T, and Han people carrying the TT genotype of TGF-β -1348T are more susceptible to osteoarthritis.

Objective To identify the mutation of trafficking protein particle complex 2 (TRAPPC2) gene in a large Chinese pedigree with X-linked spondyloepiphyseal dysplasia tarda by the PCR-based capillary electrophoresis methods.Methods The blood samples were collected from a large Chinese pedigree of three generations with six affected persons with X-SEDT.Four exons comprising the TRAPPC2 gene open reading frame as well as their exor/intron boundaries were analyzed by argrose electrophoresis and bidirectional direct sequencing of PCR products.Fluorescence labeled fragment analysis was performed by capillary electrophoresis.Results A 5-bp deletion mutation of TRAPPC2 gene in exon 5,c.262_266delGACAT (D88del; I89fX12),was identified in the proband and his unaffected mother(a heterozygote) in the Chinese family with X-SEDT,but no other sequence change occurring in exons 3,4 and 6 was detected.The old sister of proband was determined being carriers because she carries the deletion fragment allele of exon 5 PCR product and the young sister being normal individuals because she carries the wild allele of TRAPPC2 gene.Conclusions The mutation c.262_266delGACAT (D88del; I89fX12) of TRAPPC2 gene was firstly reported in Chinese people.The mutation of c.262_266delGACAT (D88del; I89fX12) in TRAPPC2 gene may be the pathologic cause of the patients in the X-SEDT pedigree.Fragment analysis combined with DNA sequencing by capillary electrophoresis method is effective laboratory test in the small deletion mutation analysis and carriers screening in X-SEDT family.

Objective To screen a sensitive method for detecting respiratory viruses from three different methods of singleplex conventional PCR , multiplex conventional PCR and multiplex real-time RT-PCR.Methods Parallel examination of 17 respiratory viruses was performed on 73 throat swab specimens collected from patients with upper respiratory tract infection by the three methods .The detection rates of dif-ferent respiratory viruses were used as evaluating indicator for the three methods .Results The numbers of respiratory viruses detected by singleplex conventional PCR , multiplex conventional PCR and multiplex real-time PCR were 56, 41 and 87, respectively.Conclusion The multiplex real-time RT-PCR might be used for the detection of respiratory viruses in laboratory as its high detection rate in comparison with the other two methods .

Abstract: Objective　To analyze the epidemiological characteristics and related factors of norovirus in Guangxi from 2015 to 2020, and to provide scientific recommendations for norovirus prevention and control. Methods The foodborne diseases surveillance data were collected from 11 sentinel hospitals through the National Foodborne Disease Monitoring and Reporting System from 2015 to 2020. R software with version 4.0.3 was used for descriptive and statistical analysis, including epidemic curve, chi-square test, and trend chi-square and so on. Logistic regression was used to analyze norovirus-related factors, OR values and 95% confidence intervals were calculated respectively with the statistical test level of P<0.05. Results There were 1 008 norovirus cases detected, with a detection rate of 12.75% (1 008/7 903). Children with age less than 5 years (OR=1.43, 95%CI: 1.13-1.82) and patients at age 20-45 (OR=1.45, 95%CI: 1.13-1.87) were high risk population. The detection rate was higher in autumn (OR=1.29, 95%CI: 1.08-1.53) but lower in summer (OR=0.67, 95%CI: 0.55-0.80). In addition, the tourist area (Guilin City) presented a higher detection rate than other areas (OR=1.41, 95%CI: 1.10-1.80). Aquatic products (OR=1.40, 95%CI: 1.03-1.91), meat and dairy products (OR=1.31, 95%CI: 1.06-1.61) were high-risk foods for norovirus infection. The prevention and control policies of COVID-19 can reduce the possibility of norovirus by 61% (OR=0.39, 95%CI: 0.31-0.49) showed a declining trend (Trend χ2=85.33, P<0.001). In addition, prolonged visit time can lead to 19%-23% decrease in the detection rate of norovirus (OR24-48 hours=0.81, 95%CI: 0.70-0.95; OR>48 hours=0.77, 95%CI: 0.63-0.93). Conclusions　The epidemic of norovirus presented seasonal and regional distribution in Guangxi with a declining detection rate trend in diarrhea patients during recent 6 years. Young children were high-risk population in infection norovirus. The intake of seafood can increase the risk of norovirus infection. The prevention and control policies of COVID-19 can sharply decrease the possibility of infection norovirus. The monitoring of key foods such as seafood should be strengthened, and the early screening of suspected cases should be taken. The norovirus monitoring should be improved to ensure the health of the population.

Bodily Secretions ; virology ; Humans ; Pharynx ; virology ; Pneumonia ; diagnosis ; virology ; Respiratory System ; virology