Objective:To study the relationship between the dose of active DNA and the induction of SLE-like syndrome.Methods: DNA from extracted ConA-activated spleen lymphocytes and immunized syngenic mice with different quantities of active DNA, the anti-dsDNA antibodies and anti-histone antibodies as well as the antibody subclass were detected by ELISA.The patterns of antinuclear antibodies and immune complexes in glomeruli were observed by immunofluorescent-stain. Results: 10 pig active DNA could induce all the animal to produce anti-dsDNA and anti-histone antibodies,and the induced autoann'bodies were mainly IgGl type.Only 25%animals produced autoantibodies immunized by 5 fjig active DNA. Conclusion:The minimum dose of active DNA to induce SLE-like syndrome was 10 ^tg,and it predominantly evoked the humoral response.

OBJECTIVE:To observe the clinical efficacy of Nimodipine for patients with cerebral hemorrhage.METHODS: A total of 60 patients with cerebral hemorrhage were randomly divided into treatment group and control group.The treatment group were given nimodipine plus the routine therapy while the control group received routine therapy alone.The clinical neurologic impairment scores(CCS) and clinical effects of two groups were observed before treatment and at 14 days after treatment.RESULTS:At 14 days after treatment,the neurologic impairment score(CCS) in the treatment group was significantly lower than in the control group(13.6?8.1 vs.17.8?8.3,P

Objective To study the construction and function of platelet (PL) and the protection of PL by blood anesthesia during the eardiopulmonary bypass (CPB). Methods Bovine serum albumin (BSA) was immobi-lized on the surface of polyethylene terephthalate(PET) which was used as artificial vascular materials,to obtain the samples of PET-BSA. (1) The quantity of PL adhesion of PET and PET-BSA samples were investigated by lactate de-hydrogenase(LDH) test. (2) The quantity of PL activation was investigated by a-granule membrane protein-140 (GMPI40) test. (3)PL adhesion test was conducted on the surface of the samples and the morphology of the adhered PL was examined by scanning electron microscopy (SEM). (4)30 patients undergoing cardiac surgery under CPB were randomly divided into aprotinin group and control group,quantities of FDP, PK, PLG and thromboxance B2 (TXB2) in the blood were measured in various time, PLs were observed by electron microscopy, and postoperative blood loss from chest and medium were recorded during first 24 hours. Results Compared with the control group,the quantity of PL adhesion on the PET-BSA samples significantly decreased and the quantity of PL activation of the PET-BSA group was only 20% of the control group. The results of SEM showed PL on PET-BSA surface was few,whereas on the PET sur-face overlaped and had pseudopodium. The decomposition of PLG is fewer in blood anaesthesia group,indicated the fi-brinolytie system was inhibited and construction of PL was protected. Conclusion During CPB,plasma proteins com-pete against each other to adhere on the tube of CPB,then PL interact to the adhered proteins,and PL combine with conformation changed fibrin at its C extreme of γ chain. At the same time,PL is activated and its GPⅡb/Ⅲa point is ex-posed. The function of blood anesthesia of aprotinin is to inhibit the activation of PIg; and PK,protect the GPⅡb of PL from being destroyed, and protect the coagulation funeion of PL of postoperation.

Objective To explore the quality of life (QOL) and its influential factors among patients with 3 major rheumatic diseases. Methods A total of 216 patients with rheumatic diseases (84 patients with systemic lu- pus erythematosus, SLE, 83 with rheumatoid arthritis, RA, and 49 with ankylosing spondylitis, AS) were recruited. The information with regard to their quality of life, sociopsychological factors and the evaluation of disease activity were obtained by using the medical outcomes study short form-36 (SF-36) and clinic documents. Results Patients with rheumatic diseases scored significantly lower with each subscale of SF-36 as compared to those of a healthy popu- lation in China (P

The genetic diversity of three Tibetan herbs, i. e., Sang-Di, E-Dewa and Ye-Xingba (Tibetan names), was studied based on the field collection, specimen identification and DNA sequence analysis. Swertia hispidicalyx, Gentiana lhassica and Scrophularia dentata, as the original plants of the three Tibetan herbs, were collected and identified. The regions of ITS, matK, rbcL, rpoC1, trnL(UAA), psbA-trnH, atpB-rbcL, trnS (GCU)-trnG(UCC), rpl20-rps12, trnL(UAA)-trnF(GAA) and nadl 2nd intron were amplified and sequenced. The ITS regions of S. hispidicalyx and S. dentata were cloned and sequenced, and the sequences were classified into different genotypes. All the sequences were analyzed and compared with those of closely related species. Our studies may provide reference for the genetic diversity analysis and molecular identification of the three Tibetan herbs.
Genetic Variation ; Gentiana ; classification ; genetics ; Phylogeny ; Plant Proteins ; genetics ; Plants, Medicinal ; classification ; genetics ; Scrophularia ; classification ; genetics ; Swertia ; classification ; genetics ; Tibet

OBJECTIVETo investigate the impact of ethanol extracts from Sedum sarmentosum (ESB) on STAT-3 signaling and its probable molecular mechanism in inducing apoptosis.

METHODMTT assay was used to detect the impact of ESB on HepG2 cell proliferation. FITC-Annexin V-FITC /PI double-labeling were used to investigate the impact on hepatoma carcinoma cell apoptosis. Western blot analysis was used to test the expression levels of cell apoptosis-related proteins Caspase-3, Caspase-9, PARP, P-STAT-3 (Tyr705) , STAT-3, Bcl-2, Mcl-1.

RESULTESB could notably inhibit proliferation of HepG2 cells, and induce HepG2 cell apoptosis, with the dose-dependent inhibitory effect. In addition, ESB could inhibit STAT-3 signaling, down-regulate Mcl-1 and Bcl-2 expressions, and induce degradation/activation of apoptosis-related proteins Caspase-3 and Caspase-9 and PARP degradation in a dose-dependent manner.

CONCLUSIONESB inhibits HepG2 cell proliferation and induces apoptosis by inhibiting STAT-3 signaling and Mcl-1 and Bcl-2 expressions.

Apoptosis ; drug effects ; Blotting, Western ; Caspase 3 ; metabolism ; Caspase 9 ; metabolism ; Cell Proliferation ; drug effects ; Dose-Response Relationship, Drug ; Ethanol ; chemistry ; Flow Cytometry ; Hep G2 Cells ; Humans ; Myeloid Cell Leukemia Sequence 1 Protein ; metabolism ; Plant Extracts ; chemistry ; pharmacology ; Poly(ADP-ribose) Polymerases ; metabolism ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; STAT3 Transcription Factor ; metabolism ; Sedum ; chemistry ; Signal Transduction ; drug effects ; Time Factors

Objective To study the distribution of K15 alleles of human herpesvirus 8 (HHV-8) in Kaposi's sarcoma (KS) in Xinjiang,and to investigate the relationship between clinical profiles of KS and alleles of HHV-8 K15.Methods HHV-8 DNA was extracted with phenol-chloroform-isoamyl alcohol from 27 formalin-fixed,paraffin-embedded tissue specimens of KS.The HHV-8 K15 gene was amplified by nested- PCR,and sequenced for the identification of K15 allele.Results HHV-8 DNA could be detected in 22 (81.48%) out of 27 KS patients in Xinjiang.HHV-8 DNA was detected in all 4 patients with AIDS-related KS.Twenty viral strains were identified as P type,including all 4 from the AIDS-related KS patients;two strains were identified as M type,which were all from the classical KS patients.Conclusions In KS,most of HHV-8 K15 alleles are P type,and some are M type.The 4 patients with AIDS-related KS all carried P type of K15 allele.

Objective To detect the influence of miRNA-34a (miR-34a) on the proliferation of osteosarcoma and the mechanisms responsible for miR-34a regulation.Methods The osteoblastic cell line MG-63 and Saos-2,human osteoblastic cell line hFOB 1.19,10 osteosarcoma tissues and 10 normal bone tissues were selected.The expression of miRNA-34a in osteosarcoma cells and tissues was detected by quantitative real-time polymerase chain reaction (qPCR).Next,a eukaryotic expression vector named pcDNA/miR-34a was constructed.Then,osteosarcoma cells were transfected with this eukaryotic expression vector and the effects of miR-34a overexpression on the proliferation and growth of osteosarcoma were measured using CCK-8,colony formation and xenograft model of nude mice.Finally,Western blot analysis was used to detect the expression of ether-à-go-go 1 (Eag1) gene in osteosarcoma cells after transfected with pcDNA/miR-34a or a miR-34a inhibitor miR-34a-2'-O-Methyl antisense oligoribonucleotide (miR-34a-2'-O-Me).Results Compared with normal bone tissues and osteoblastic cell line,miR-34a was down-regulated in osteosarcoma cell lines and tissues.Compared with the blank group and the control group,the cell survival rates of miR-34a group of the two cell lines were significantly lower [MG-63 72 h:blank group (40.05±4.82) ％,control group (36.88± 4.66) ％,miRNA-34a group (26.24±6.22) ％;MG-63 96 h:blank group (83.55±5.95) ％,control group (80.13± 4.48) ％,miRNA-34a group (30.21±7.26) ％;Saos-2 72 h:blank group (46.45±8.15) ％,control group (43.33± 6.89) ％,miRNA-34a group (26.81±3.17) ％;Saos-2 96 h:blank group (84.79±4.10) ％,control group (80.14± 3.11) ％,miRNA-34a group (31.77±5.17) ％].The similar results were obtained from colony formation assay (MG-63:blank group 83.40±3.29,control group 80.00±3.06,miR-34a group 24.40±2.71;Saos-2:blank group 85.00±3.32,control group 80.60±3.29,miR-34a group 30.40±4.94).The tumor volumes of osteosarcoma xenograft in the miR-34a group was significantly smaller than that in the blank group and control group after 21 days treatment (all P ＜ 0.001).Overexpression of miR-34a could decrease Eag1 expression in osteosarcoma cell lines while inhibition of miR-34a induced the of expression Eag1 (P ＜ 0.001).Conclusion MiR-34a plays a tumor suppressor role in osteosarcoma and could suppress the proliferation and growth of osteosarcoma through the regulation of Eag1.Moreover,it may be a novel target for osteosarcoma therapy.

Objective To observe the change ofbrain water content,levels of cAMP response element binding protein(CREB)and phosphorylated CREB(p-CREB) in the early stage of traumatic brain injury(TBI) and to investigate the effect of TBI and p-CREB on learning and memory.Methods Fifty-four male adult Wistar rats were randomized into the normal group(18 cases),control group(18 cases) and TBI group(18) according to the random number table method.The TBI model was built according to the modified Feeney method and previous experimental parameters.At 12 h after TBI,Western blot analysis were performed to measure the expressions of hippocampal tissue CREB and p-CREB,the Morris water maze test was used to detect the behavior of rats in each group and the wet-dry method was applied to test brain water content.Results The brain water content at 12 h after TBI in the TBI group was remarkably risen compared with the normal group and control group;the expression levels of hippocampal CREB and p-CREB at 12 h after TBI in the TBI group were significantly decreased compared with the normal group and control group,the latent stage was increased and the frequency searching the accuracy within 2 min was decreased.Conclusion Brain edema is obvious after TBI and the levels of CREB and p-CREB are decreased,which maybe one of the reasons for the impairment of learning and memory function after TBI.

Objective To investigate the biological characteristics and epidemiological significance of Yersinia pestis strains in Qilian County,Qinghai Province,in order to provide a scientific basis for plague prevention and control.Method Totally 67 strains were separated from kinds of host in Qilian County,Qinghai Province from 1958 to 2011,to do biochemical test,toxicity test,virulence factors evaluation,plasmid analysis and different region (DFR) genotyping.Results According to biochemical typing,48 of the 50 strains tested were Qing-Tibet Plateau ecotype,15 were Qilian Mountain ecotype,and the remaining 4 were different ecotypes from the plague foci in Qinghai plateau.The strains had 8 genomovars,and were given priority to genomovar8 (42 strains),secondly,genomovar44 (15 strains),genomovar5 (4 strains),genomovar7 (2 strains),genomovar19 (1 strain),genomovar30 (1 strain),genomovar32 (1 strain),and genomovar34 (1 strain).A proportion of 95.52％ (64/67) of the strains contained 3 kinds of plasmid-6 × 106,45 × 106,and 52 × 106;85.07％ (57/67) contained all the four virulence factors,and 96.00％ (48/50) were velogenic strains.Conclusion The strains separated in Qilian County,Qinghai Province have the characteristics of Qinghai-Tibet Plateau plague's pathogen and have strong toxicity,so we should enhance the plague monitoring and give more publicity to plague prevention to prevent animal plague spreading to human.