Composite Resins ; Dental Restoration, Permanent

Composite Resins ; Dental Cements ; Dental Restoration, Permanent ; Humans

In order to improve the expression level of segment of GABAA receptor a1 subunit in E. coli, growth conditions of the recombatant, which influence the final yield of protein expression, including growth medium, inoculation ratio, temperature, pH, rotation speed, inducing time and concentration of IPTG and so on, were studied in shaking flasks. The results indicated that, with 3% inoculation ratio, cultured 3.5 hours at 37℃, and then induced 5 hours by IPTG at 32℃, the yield of GABAA receptor protein was 95mg/L and the biomass was 3.25 g/ L. In contrast, using a 16 L stirred fermentor instead of shaking flasks, the highest level of the protein expression, 136mg/L with 4.95g/L of biomass, was achieved after fermenting 5.5 hours.

Cells, Cultured ; Endothelial Cells ; cytology ; Humans ; Stem Cells

Intestinal schistosomiasis is a kind of intravascular parasitic diseases, and chronic inflammation of colon is one of the basic pathological changes of the sickness.However, the mechanism of caveolin-1 and tight junction proteins in the pathogenesis of intestinal schistosomiasis is still unclear.Aims: To study the expressions and significances of caveolin-1 and tight junction protein occludin, claudin-1 in schistosomiasis colitis in mice.Methods: Forty BALB/c male mice were randomly divided into control group and infection group.Schistosomiasis colitis model was established by placing 40 Schistosoma Japonicum cercarie on the abdomen.Mice were sacrificed after 8 weeks.HE staining was performed.The permeability of intestinal vascular endothelium was detected by Evans blue method.The leukocyte counts in peritoneal lavage fluid were measured.qPCR was used to determine the mRNA expressions of caveolin-1, occludin, claudin-1 and eNOS in colon tissue.Western blotting and immunohistochemistry were used to detect the protein expressions of caveolin-1 and occludin.Results: Large number of egg granuloma was observed in colon submucosa and accompanied by extensive inflammatory cells infiltration in infection group.Compared with control group, content of Evans blue and leukocyte counts in peritoneal lavage fluid were significantly increased (P<0.05);mRNA expressions of caveolin-1, occludin, claudin-1 were significantly decreased (P<0.01);protein expressions and positivity rates of caveolin-1 and occludin were significantly decreased in infection group (P<0.05).Conclusions: Down-regulation of expressions of caveolin-1, occludin and claudin-1 can induce leukocyte accumulation via increasing the permeability of intestinal vascular endothelial cells, thereby involving in the development of schistosomiasis colitis.

The microbial flora of fungi,bacterial and actinomycetes in full autotrophic ammonium removal reactor and activated sludge was analyzed,and the amount of nitrite-oxidizing bacteria and ammonia-oxidizing bacteria was also compared.The result showed that the population,species,species number and dominates of microorganisms in full autotrophic ammonium removal reactor were different from that in activated sludge.In full autotrophic ammonium removal reactor,the amount of ammonia-oxidizing bacteria was increased remarkably which indicated that the accumulation of ammonia-oxidizing bacteria was a remarkable feature of full autotrophic ammonium removal system.

0.05).However,neither CpG-ODN nor hTNF-? failed in improving the expression rates of CD1a.Conclusions CpG-ODN,like hTNF-?,has remarkable im- munostimulatory effect on the differentiation and maturation of monocyte-derived DC from patients with chronic hepatitis B.

Alkaloids ; Antineoplastic Agents, Phytogenic ; Chemical Phenomena ; Chemistry ; Harringtonines

OBJECTIVETo investigate the application of relay flaps pedicled by perforator from digital artery for reconstruction of soft tissue defects at finger tip.

METHODSFrom Mar. 2012 to Jun. 2014, 9 cases with soft tissue defects at finger tip were reconstructed with relay flaps at one side of finger pedicled by perforator from digital artery. The flap size ranged from 1.3 cm x 1.6 cm to 1.6 cm x 2.2 cm. The defects at donor sites were covered by adjacent web perforator V-Y advanced flaps.

RESULTSAll the 18 flaps in 9 cases survived completely with primary healing both in recipient and donor sites. The patients were followed up for 5 months to 2 years ( average, 12 months) with good elasticity and cosmetic results. No pain happened in the treated finger. The 2-point discrimination distance was 7-8 mm in fingertip flaps, and 10-12 mm in web perforator flaps. Hand function was graded as excellent in 7 cases, good in 2 cases, based on ATM assessment. The affected fingers had normal temperature and cold-resistance during winter. The width and depth of web in the donor site were not affected.

CONCLUSIONSThe relay flaps pedicled by perforator from digital artery can be applied for reconstruction of soft tissue defects at finger tip. The procedure is easy with satisfactory results and reservation of main artery. No skin graft is necessary for closure of defects on donor sites.

Arteries ; Elasticity ; Finger Injuries ; surgery ; Fingers ; blood supply ; Follow-Up Studies ; Humans ; Perforator Flap ; transplantation ; Time Factors ; Transplant Donor Site ; Wound Healing

Objective To explore the expressions of matrix metalloproteinases-1(MMP-1) and tissue inhibitor of metalloproteinase-1(TIMP-1) in sternomastoid muscle and explore the pathogenesis of sternomastoid muscle fibrosis in congenital fibra muscular torticollis in children.Methods The hyperplastic state of collagen fiber were determine by Masson collagen stainning method and muscular torticollis and fibra torticollis was differed,obtained 22 cases of the fibra torticollis group.Immunohistochemical method was used to determine the expression of MMP-1 and TIMP-1 in sternomastoid muscle of fibra torticollis and compared them with 6 cases of control group.Results By the immunohistochemical method,the expression of MMP-1 in the experiment group significantly decreased than that in control group(P0.05).Conclusion In congenital fibra torticollis,the sternomastoid muscle fibrosis is related to the decrease of MMP-1.