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Objective To establish an ELISA for quantitative determination of decoy receptor 3 (DcR3) in human plasma.Methods A solid phase double antibody sandwich method was established for quantitative determination of DcR3.The anti-DcR3 antibody was immobilized onto ELISA plate.DcR3 in samples was captured by anti-DcR3 on ELISA plate and then detected by biotin-anti-DcR3 and subsequent peroxidase-labeled streptavidin,and the color was developed by adding substrate.The standard DcR3 samples on the same plate were detected simultaneously to calculate the DcR3 concentrations in unknown samples.The sensitivity,specificity,precision,recovery,linearity and DcR3 range in normal human adults were assessed.Results The sensitivity of the developed assay was 0.051 ng/mL.The intra-coefficient of variation (CV) was less than 10％ and inter-CV was less than 15％.The average recovery rate was 90.50％.When 2-fold amount of anti-TNF-α was added into the coated antibodies,10-fold amount of biotin-labeled anti-LIGHT,antiFAS or anti-TNF-α was added into the detection antibodies,or 10 fold amount of purified LIGHT protein was added into the standard DcR3 samples as competitor,no disturbing effects on standard curve were found.The linear range of the assay was from 0.25 to 16 ng/mL (r≥0.98).The concentration of DcR3 tested in 128 plasma samples from healthy adults was (0.21 ± 0.05) ng/mL with 95％ CI ranged from 0.14 to 0.28 ng/mL and no difference of age and sex was found.Conclusion The established ELiSA for determining plasma DcR3 exhibited high specificity,sensitivity,precision,fine linearity and wide detecting range.This method could be used for quantification of DcR3 in plasma.
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Aim To observe the correlation between the TPL's suppression on myofibrolbasts(MFBs)activation and TGF-β1/ERK/Smad3 pathway by performing in vivo and in vitro experiments.Methods In vitro model of MFBs activation was set up by stimulating fibroblasts with TGF-β1,and in vivo model of MFBs activation in radiated lung tissue was built by thoracic radiation on C57BL/6 mice.MFBs activation was analyzed by detecting the expression of α-SMA(using RT-PCR and Western blot)and Col Ⅰ(using RT-PCR and ELISA methods).The levels of p-ERK,p-Smad3(Ser208)and p-Smad3(Ser423)were measured by Western blot.ERK siRNA and Smad3 siRNA were used to observe the status of ERK and Smad3 in MFBs activation.Results TGF-β1 activated p-ERK/p-Smad3(Ser208)and p-Smad3(Ser423),increased the expression of α-SMA and synthesis of Col Ⅰ,which indicated MFBs activation.siRNA knockdown assay showed that both ERK and Smad3 were involved in regulating the levels of α-SMA and Col Ⅰ,and ERK influenced MFBs transformation possibly through its phosphorylation of Smad3(Ser208).TPL treatment inhibited the phosphorylation activation of ERK,Smad3(Ser208),Smad3(Ser423)in vitro and in vivo,therefore significantly reduced the level of α-SMA and Col Ⅰ,and the number of activated MFBs was decreased.Conclusion TPL mitigates radiation-induced pulmonary fibrosis by inhibiting the activation of MFBs,which is partly through suppressing TGF-β1/ERK/Smad3 pathway.
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Objective:To observe the clinical efficacy of Chinese medical gargle on gingivitis of the patients wearing fixed appliance. Methods:60 gingivitis patients with fixed orthodontic treatment were randomly divided into chlorhexidine gargle group( CG group) and Chinese medical gargle group(CMG group)(n=30). Gingival index(GI) and sulcus bleeding index(SBI) in all patients were tested, then the patients were treated by scaling and curettage, and guided to use gargling with corresponding gargle 3 times a day for 14 d. GI and SBI were tested after 7 and 14 days respectively. Data were analysed. Results:After 7 d treatment, GI and SBI were decreased( P<0. 05) and there was no obvious difference between the 2 groups(P<0. 05). After 14 d treatment GI and SBI in CMG group de-creased more than those in CG group(P<0. 05). Conclusion:Chinese medical gargle is effective in the treatment of gingivitis of the patients during fixed orthodontic treatment.
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Objective To establish evaluation methods for compliance of patients taking Chinese medicine decoctions, according to the score of degree and weight for the unreasonable behaviors. Methods The patients taking TCM decoctions during July to December in 2010 were interviewed. Self-made scale was used for questionnaire and interview. The score of degree and weight for the unreasonable behavior were employed as evaluation indexes for compliance (0:complete compliance;0
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ObjectiveTo analyze the application of β-lactam antibiotics and bacterial drug resistance in our hospital for providing basis of the rational use of antibiotics.MethodsThe DDDs,total consumption sum,DDC and bacterial drug resistance of β-lactam antibiotics during 2008-2009 were analyzed statistically.ResultsCephem Antibiotics was the most extensive application,and the DDC of Benzylpenicillin Sodium was the minimum in the β-lactam antibiotics.There had bacterial drug resistance of most β-lactam antibiotics,but the differences were not significant.ConclusionThere was irrational use of β -lactam antibiotics,and it was important to enhance antibiotics supervisal and drug sensitivity before use for decreasing the abuse of antibiotics.
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Objective To study the effect of exogenous 3-deoxyglucosone (3-DG) on blood glucose of normal mice. Methods Kunming male mice were divided into two groups: 3-DG (5mg/kg) treatment and control group.At day 1,week 1 and week 2 after treatment, we compared fasting blood glucose,and did the glucose tolerance test in 3-DG group after 2 weeks' 3-DG administration. Results Blood glucose was increased obviously 2h after administration with 3-DG once versus pre-administration and control (7.78±0.694 vs 6.41±0.408,and 6.43±0.43,all higher than control,but no statistical significance (P＞0.05). There were no differences in 6 hour fasting blood glucose after once administration with 3-DG and in 12 hours fasting blood glucose two weeks after administration with 3-DG between 3-DG and Con groups. After 3-DG administration for two weeks,as compared with Con, the 30 minute blood glucose of 3-DG administration mice during OGTT was obviously increased (19.47±1.541 vs 17.22±1.911,P＜0.05), but glucose levels at 60 minute and 120 minute had no changes (P＞0.05). Conclusions Exogenous 3-DG increases the normal mice's blood glucose immediately after once administration with 3-DG and results in up-moving of glucose physiological curve and leads to a light impairment of glucose tolerance when mice were continuously fed with 3-DG for 2 weeks.
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The secretory component (SC) which localized in the cpithelial cells of bile ducts and interlobular bile ductules of normal human Jiver was confirmed by the indirect immunofluorescence technique using FITC-labelled rabbit JgG and rabbit anti-SC antibody. The results show that the intrahepatic SC is one of substantial bases for enterohepatie circulation. and the elevation of serum SIgA might be due to the destruction of these cells integrity.