Objective:To investigate the the retention force changes of 2 kinds of T bar clasps on Cr-Co crowns and the surface ab-rasion of the crowns.Methods:Standard Cr-Co crowns were made,and standard T bar clasps were made of Cr-Co alloy and Vitalli-um2000 with 0.25 mm and 0.5 mm undercut depth respectively.1 800 times repeated placement and removal(fatigue test)were car-ried out on instron testing machine in or without saliva soak condition.The attenuation curves of the maximum retention force was an-alysed.The surface abrasion of the crowns was observed before and after the fatigue test by SEM.Results:The retention force attenu-ation of the clasps in every group was accord with the logarithm attenuation law.SEMexamination showed that in the same condition, there was less surface abrasion in Vitallium2000 group than that in Cr-Co group.Vitallium2000 clasp was superior to Cr-Co clasp in maintaining the retention force.Conclusion:Vitallium2000 T bar clasp may provide better retention force with less furface abrasion on Cr-Co crown than Cr-Co clasp.

Objective To observe the effect of atorvastatin on lowering blood lipid in patients with type 2 diabetic mellitus plus hyperlipidemia. Methods All patients took 10 mg atorvastatin every night for 12 months. The levels of total cholesterol (TC), triglycerides (TG), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C), serum alanine aminotransferase (ALT), aspartate aminotransferase fAST), fasting blood glucose (FBG), creatinine (Cr), intima media thickness (IMT) of carotid artery (CA), common lilac artery (CIA) and femoral artery (CFA) were examined before and 3, 6, 9, 12 months after the treatment. Results TC [(5.11±0.94) vs. (4.46±0.98) mmol/L, P<0.01] and LDL-C [(3.01±0.78) vs. (2.55± 0.83) mmol/L, P<0. 01] were significantly decreased one year after the treatment. At different detection time points, the levels of LDL-C all reached the therapy standard (<2.59 mmol/L). But TC reached the therapy standard (<4.04 mmol/L) only at nine months after the treatment. IMT of CA, CIA and CFA were at the decreased tendency (P>0. 05). No significant changes were observed in ALT, AST and Cr. Conclusions Atorvastatin may significantly decreased the level of blood lipid with little adverse effect in elderly patients with type 2 diabetic mellitus plus hyperlipidemia, and it also has the effect of protecting the vascular intima.

Objective To establish a new,rapid,simple and reliable assay for detecting autoantibody SSB.Methods A new dot immunogold filtration assay(DIGFA) was developed,in which the recombinant SSB protein expressed in Pichia pastoris was bound to nitrocellulose(NC) membrane and colloidal gold-labeled staphylococus protein A(SPA) was used as an indicator.Results The sensitivity and specificity of DIGFA were 100% and 98.75%,respectively.The agreement between DIGFA and ENA dot assay was 99.01%.Conclusion DIGFA for detecting autoantibody SSB is a good,rapid,simple and accurate assay for clinical diagnosis.

Objective To analyze imageology appearance and clinical characteristics of the cystic and solid breast carcinoma.Methods Features of MRI and B-type ultrasonic inspection of 26 patients with the cystic and solid breast carcinoma pathologically confirmed (15 patients with mucinous carcinoma,6 patients with intracystic papillary carcinoma,5 patients with squamous cell carcinoma of the breast) were retrospectively reviewed.Results In terms of clinical appearance,the incidence of the squamous cell breast carcinoma with an average age of 70.1 years old was larger than in youth,while mucinous carcinoma with an average age of 67.7 years old and intracystic carcinoma of breast with an average age of 55.1 years old were contrary.The squamous cell breast carcinoma developed more quickly than mucinous carcinoma and intracystic carcinoma of breast.The squamous cell breast carcinoma often occurred around mammilla (4/5),while the mucinous carcinoma and intracystic papillary carcinoma often occurred upper outer quadrant of breast,which was similar with other breast cancer.The average size of 49.6 mm in the squamous cell breast carcinoma was largest than the average size of 25.1 mm in mucinous carcinoma and the average size of 35.2 mm in intracystic papillary carcinoma.The malignant degree of squamous cell breast carcinoma was higher than mucinous carcinoma and intracystic papillary carcinoma,which intended to occur lymph node metastasis and skin infiltration.The diagnosis probability of mucinous carcinoma was smaller than intracystic papillary carcinoma through preoperative puncture,while squamous cell breast carcinoma was larger.On the MRI imageology appearance,both types of breast cancer had the same shape of rotundity or lobulated.The tumors were low signal on T1WI and partially high signal on T2WI,which were circular enhancement after enhancement.However,the edge of mucinous carcinoma and squamous cell breast carcinoma was rougher than intracystic papillary carcinoma compared with squamous cell breast carcinoma.The bursa wall of mucinous carcinoma was more uniformity,while papillary soft tissue image can be found in intracystic papillary carcinoma,which was enhanced significantly after enhancement.In terms of ultrasonic sound (US),there were low echo signal and high echo signal on the back of tumor compared with other breast tumor.There were shadow beside mucinous carcinoma.Squamous cell breast carcinoma was rich in blood supply,while mucinous carcinoma and intracystic papillary carcinoma were opposite.Conclusion Histological type of cystic and solid breast carcinoma is complex,but the appearances of MRI and US have some characteristics.Histological type and the range of disease could be guessed through the combination of preoperative puncture and clinical appearance,which plays an important role in operation mode and treatment guidance.

Objective To translate the English version of Infant Feeding & Nutrition Checklist For Congenital Heart Disease (IFNC:CHD) into Chinese,and to test the reliability and validity of the Chinese version of IFNC:CHD.Methods After obtaining authorization from the developer,the IFNC:CHD was translated and culturally adapted into Chinese version.The reliability and validity of the Chinese version of IFNC:CHD were tested in 168 patients.Results The Cronbach's α coefficient was 0.804.Two nurses used the scale to evaluate the consistency of the results,and the Kappa coefficient was 0.812.The content validity index of item ranged from 0.80 to 1.00,and the average index was 0.90 for the total scale.The correlations coefficients between each dimension score and the total score ranged from 0.339 to 0.474 (P＜0.01),and the correlations coefficients between each dimension score ranged from 0.198 to 0.861(P＜0.01,P＜0.05),Three factors were extracted from exploratory factor analysis,and the cumulative variance contribution rate was 72.66％.Conclusion The Chinese version of IFNC:CHD has been proved to have good reliability and validity.It can be used to assess infant feeding and nutritional risk of congenital heart disease in the Chinese settings.

Objective To preliminarily evaluate the performance of glucose detention reagents with three kinds of different chro-mogens and to investigate their anti-interference performance according to NCCLS document.Methods According to the protocol EP10-A2 provided by the National Committee for Clinical Laboratory Standards(NCCLS),the samples with low,middle and high level of glucose were detected by the glucose reagent kits with 3 kinds of different chromogens.The bias,total imprecision,inter-cepts,slope rates,nonlinearities,carryover rate and drifts were calculated.The interference evaluation test was performed according to the document EP7-A2.Results The bias and total imprecision of three kinds of reagent kits were all within allowed ranges.No statistically significant differences were showed in intercepts,slope rates,nonlinearities,carryover rate and drifts.1450 turbidity chyle,5 g/L hematoglobin and 0.03 g/L vitamin C did not interfere with the assay of three kinds of glucose reagent kits with differ-ent chromogens.342 μmol/L free bilirubin,342 μmol/L conjugated bilirubin did not interfere with the detection of reagent with MAOS.Conclusion The glucose detention reagents with three different chromogens have good accuracy and precision,and various performance indexes all conform to the clinical application requirements,reagent with chromogen MAOS is better than other chro-mogenic reagents in the anti-interference performance.

AIM: To detect the signal pathway of apoptosis induced by 4-hydroxyphenyl-retinamide(4-HPR) and the biological effect of parthenolide-induced apoptosis.METHODS: TUNEL staining,FCM analysis,electrophoretic mobile shift assay(EMSA) were used to determine the actual effects and its mechanism of parthenolide on the 4-HPR-induced apoptosis in human hepatoma Hep-3B and SK-Hep-1 cells.RESULTS: The results of TUNEL and PI staining showed that parthenolide selectively enhanced 4-HPR-induced apoptosis in Hep-3B and SK-Hep-1 cells.Subsequent observations using EMSA assay indicated that parthenolide effectively inhibited NF-?B activation during fenretinide-induced apoptosis.CONCLUSION: These findings indicate that parthenolide suppresses 4-HPR-induced apoptosis via inhibition of NF-?B activation and that NF-?B activation during fenretinide-induced apoptosis might have an anti-apoptotic effect.

The antitumor activities of NL-101,aHDACi/DNA damage dual-targeting drug,on human multiple myeloma in vitro and in vivo were studied.Furthermore,the primary mechanisms were revealed.We detected the anti-proliferative activity of NL-101 on 10 human multiple myeloma cell lines,and the combinational effect of NL-101 and bortezomib on RPMI 8226 cell line.The inducing effects of NL-101 on cell cycle arrest and apoptosis were detected by FACS.The effects of NL-101 on acetyled-Histone H3,total Histone H3,acetyled α-Tubulin,total α-Tubulin,phospho-Histone H2A.X and total Histone H2A.X were evaluated by Western blott.We also demonstrated the antitumor activity of NL-101 and the combinational effect of NL-101 and bortezomib on RPMI 8226 xenograft tumor model in vivo.Results showed that NL-101 possessed strong antitumor activities on human multiple myeloma cells in vitro and in vivo.NL-101exhibited significant HDAC inhibitory activity and DNA alkylating activity.NL-101not only inhibited histone deacetylation level,but also increased the DNA damage in multiple myeloma cells.Meanwhile,NL-101 induced cell cycle arrest and apoptosis.Also,the synergistic effect of NL-101 was discovered when combined with bortezomib in vitro and in vivo.These data demonstrated that NL-101 may be a potent agent for the treatment of human multiple myeloma in future.

Objective The study is to present a novel assay for rapid detection of fetal aneuploidies in chorionic villus for spontaneous abortion.Methods Fetal chorionic villus samples were collected from 60 cases of women diagnosed with recurrent spontaneous abortion (RSA) before 13 weeks gestation.All samples were analyzed using CNVplex (copy numbcr variations multiplex) assay and fluorescence in situ hybridization (FISH) in addition to chromosome analysis.All villi specimens were cell cultured and karyotyped to confirm the fetal chromosomal status.Results Among 48 successfully cultured and karyotyped samples,the chromosomal abnormality rate was 60.42 ％.The results of karyotyping and the CNVplex assay were identical,both yielding 20 cases of euploidies,23 autosomal aneuploidies,3 triplodies and 2 × monosomies(Tumer Syndrome).However,FISH obtained only 38 results identical to karyotyping.Two cases of deletion and duplication of chromosome were also identified by CNVplex but not always by karyotyping.As for non-mosaic and non structural abnormity samples,the concordance between cytogenetics and genoty ping was 100％ in CNVplex and 79.17％ in FISH.Conclusion With CNVplex combined with STR(short tandem repeat) assay,we can detect the aneuploidy abnormalities as effectively as routine karyotyping without the need for cell culture,while also analyzing deletions and duplications(larger than 5 Mbp) that are not always detected by karyotype analysis.Our study demonstrates that CNVplex assay is an efficient,convenient,and accurate method to explore the etiology of miscarriage.

ThevolatilecompositionsofDuchesneaindicawerestudiedbyheadspacesolid-phase microextraction ( HS-SPME ) , soxhlet extraction ( SE ) , ultrasonic assistant extraction ( UAE ) and steam distillation ( SD) coupled with gas chromatography-mass spectrometry ( GC-MS) . The experimental parameters of HS-SPME, including fiber type, extraction temperature, extraction time and desorption time were investigated. 47, 32, 16 and 16 compounds were identified by HS-SPME, SD, SE and UAE extracting methods, respectively. 66 compounds were obtained in total, among which 47 compounds were first reported in Duchesnea indica. The experimental results showed that terpenoids were the most abundant compositions in HS-SPME and SD, but acids accounted for 61. 44% and 69. 54% of the total content obtained by SE and UAE.