Objective To investigate the CT angiography (CTA) in the diagnosis of intracranial atherosclerosis.Methods Sixty-eight cases of suspected ischemic cerebrovascular disease patients were enrolled in this study,and all patients underwent CTA.Parallel image post-processing was done.CTA characteristics were observed and compared with digital subtraction angiography (DSA) results.Results A total of 376 lesions in 68 cases were examined,112 lesions were found in CTA; intracranial atherosclerotic plaques mainly distributed in the internal carotid artery (53 lesions),anterior cerebral,middle and posterior artery (39 lesions) and vertebral-basilar artery (20 lesions).In narrow artery segment,stenosis with calcified plaque was in 32 lesions,mostly in the middle cerebral artery,the cavernous segment of the internal carotid artery,clinoids segment and intracranial vertebral artery.For non-calcified plaque,CTA showed fuzzy.DSA showed 128 total lesions,and severe stenosis rate in CTA [9.31％ (35/376)] and DSA [9.31％ (35/376)] was consistent.Thirty-eight patients were correctly diagnosed.Conclusions CTA as a minimally invasive intracranial atherosclerosis diagnostic methods,consumes less time with low cost and high spatial resolution.It is suitable for clinical universal application.

Influences of environment on medical equipment lie in many fields and exist independent of human consciousness.In order to lengthen the service life of medical equipment and produce the best possible results,human beings use scientific methods to utilize and change the natural situation.Bad influence from natural conditions to medical equipment is expatiated from such aspects as influence from thunder,rain,snow,electricity,warmth,humidity,mist,magnetism,etc.The management and the protection of the medical equipment under the natural situations are discussed.

AIM:To study the effect of Taxol on the proliferation, apoptosis, and mRNA expressions of α2,6-sialic acid (SA) and α2,6-sialyltransferase (ST6Gal) in mouse cervical cancer cell line U14.METHODS:After the U14 cells were treated with Taxol, the IC50 value of Taxol to U14 cells was detected by MTT assay.The expression of α2,6-SA and apoptosis-related factors (Bcl-2, Bax, caspase 8 and caspase 3), the apoptosis rate and cell cycle were determined by flow cytometry.The mRNA expression of ST6Gal1 and ST6Gal2 was detected by qPCR.RESULTS:As compared with control group, Taxol induced obvious U14 cell growth inhibition, reduced α2,6-SA expression, up-regulated Bax, down-regulated Bcl-2, decreased the ratio of Bcl-2/Bax, enhanced caspase 8 and caspase 3 activity, increased the apoptotic rate and cell proportions of Sub-G1 and S phases, and induced G2/M phase arrest.Taxol also down-regulated the mRNA expression of ST6Gal1, and slightly up-regulated the mRNA expression of ST6Gal2.CONCLUSION:α2,6-SA and ST6Gal are involved in the multiple effects of Taxol on modulation of the cell cycle and apoptosis in U14 cells.

Objective To investigate serum metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) in non-small cell lung cancer (NSCLC) and observe gefitinib drug sensitivity before and after transfecting MALAT1-siRNA in epidermal growth factor receptor ( EGFR ) wild-type cell line A549.Discussing the relationship between MALAT 1 and epidermal growth factor receptor-tyrosine kinase inhibitor ( EGFR-TKI) drug resistance.Methods Serum MALAT1 was quantified by qRT-PCR in 90 cases of NSCLC, 30 cases of lung benign tumor and 30 cases of healthy people in the First Affiliated Hospital of Dalian Medical University during April to September in 2015.MALAT1 expression in cancer cells were detected in the cell lines A549, H1299, 95D and HCC827.The half maximal inhibitory concentration ( IC50) of gefitinib in cells before and after transfecting MALAT 1-siRNA were analyzed by cell proliferation toxicity test ( CCK).Flow cytometry technology was used to evaluate the apoptosis rates.One-way analysis of variance was statisticed between groups.Results Serum MALAT1 expression was increased in NSCLC compared with healthy control group ( NSCLC =1.88 ±2.51, Healthy control group =1, t=3.347, P<0.01).MALAT1 was over expressed in the EGFR wild-type cell lines compared with the EGFR mutant cell lines(HCC827=1, A549=4.44 ±1.05, 95D=3.55 ±0.63,H1299 =1.44 ±0.05).The IC50 value of gefitinib was declined 32.1% by silencing MALAT1.The results of flow cytometry showed an increasing apoptosis rate after silencing MALAT1 in A549 cells[NC=(9.20 ±1.85 )%, M=(10.24 ±3.43)%, NC+G=( 14.57 ±0.41 )%, M +G =( 21.48 ±2.47 )%].Conclusions Serum MALAT1 reflected the progression of NSCLC.Silencing MALAT1 resulted in enhancement in sensitivity to gefitinib in A549 cell line.It prompted the partly reversal of gefitinib resistance by MALAT1.

Objective To evaluate the clinical value of percutaneous catheter drainage under the guidance of ultrasound in the treatment of hepatic abscess.Method Forty-eight cases who were clinical diagnosis of liver abscess by percutaneous catheter drainage was selected as the observation group.There were 12 cases of liver abscess diagnosed by parallel surgical drainage in the treatment as the control group.To observe the clinical effect,hospitalization time and complications of two groups of patients after treatment.Results The cure rate of observation group was significandy higher than that in control group:100％ (48/48) vs.The temperature recovery time and hospitalization time of the observation group were significantly shorter than those in the control group:(1.5 ±0.3) d vs.(3.2 ±0.8) d,(9.3 ±2.3) d vs.(17.5 ±3.2) d.No complications occurred in the observation group,and there were 2 cases in the control group.Conclusions Percutaneous catheter drainage in the treatment of liver abscess has advantages of simple economy,less trauma,less complications and high cure rate.It has become the first choice for treatment of liver abscess.

Objective To investigate the relationship between self-esteem and social anxiety,and the role of putting into perspective played in this relationship in university students.Methods Sample consisted university students of 376 females and 164 males,data were obtained on cognitive emotion regulation questionnaire,social anxiety subscale of the self-consciousness scale,and self-esteem scale.Results Cognitive emotion regulation strategies of putting into perspective is significantly and positively related to self-esteem(r=0.12,P＜ 0.01),it was also significantly and negatively related to social anxiety(r =-0.01,P ＜ 0.05) ; self-esteem was significantly and negatively related to social anxiety(r =-0.35,P ＜ 0.001).Cognitive emotion regulation strategies of putting into perspective played both a moderating(AR2 =0.124,P＜0.05) and mediating role(F=30.717,P＜ 0.01) in the relationship between self-esteem and social anxiety.Conclusion Self-esteem is not only directly but also indirectly associated with social anxiety because of the moderation and mediation model of putting into perspective.

Objective To study the chemical constituents of the whole plant of Pholidota yunnanensis and to examine the inhibitory effects of the isolated compounds on nitric oxide(NO) production in activated rat macrophage-like cell line(RAW 264.7).Methods Various chromatographic techniques were used to separate and purify the constituents,and their structures were elucidated on the basis of spectroscopic analysis. The inhibitory effects of these compounds on NO production in RAW 264.7 cells of rats activated by lipopolysaccharide(LPS) and interferon-?(IFN-?) were tested in vitro by microplate ultraviolet-colorimetric method.Results Seven compounds were isolated and identified as trans-3,3′,5-trihydroxy-2′-methoxystilbene(Ⅰ),cis-3,3′-dihydroxy-5-methoxystilbene(Ⅱ),trans-3,3′, 5-trihydroxystilbene(Ⅲ),3,3′-dihydroxy-5-methoxybibenzyl(batatasin-Ⅲ,Ⅳ),3,4′-dihydroxy-3′,5-dimethoxybibenzyl(gigantol,Ⅴ),3,3′,5-trihydroxybibenzyl(Ⅵ),2,7-dihydroxy-4-methoxy-9,10-dihydrophenanthrene(coelonin,Ⅶ).Conclusion Compounds Ⅱ,Ⅳ,and Ⅵ show favorable inhibitory effects on NO production,compounds Ⅰ and Ⅱ are new compounds,and compounds Ⅲ-Ⅶ are isolated from this genus for the first time.

Objective To evaluate the relationship between body mass index (BMI) and blood pressure,blood glucose,lipid profiles and blood uric acid in healthy populations in Hefei of Anhui province.Methods A total of 3 640 healthy adults were enrolled to analyze the relationship between BMI and blood pressure and serum levels of lipid profiles,uric acid and glucose.Results The mean BMI of the subjects was (25.5±2.8) kg/m2 (men vs women:(26.3±2.5) vs (23.9±2.8) kg/m2).BMI showed a significant difference in different age groups (P＜0.05).Different BMI subgroup had statistically significant difference in blood pressure,glucose,lipid profiles and uric acid.In different gender and age groups,BMI,blood pressure,glucose,blood lipid and uric acid were found to be significantly different.Conclusion The prevalence of obesity and overweight is high in our health check-up populations.It should be important to prevent and control hypertension,high blood glucose,high blood uric acid and other chronic diseases.

Objective:To observe the effects of dentin proseeded with BMSCs or PDLCs incorporated with PDLCs sheets and calci-nated ceramic bovine bone(CBB)in the reconstruction of periodontal tissue.Methods:Root dentin slices were prepared and pre-seeded with BMSCs or PDLCs from beagle dog.After cultivated in osteoinduction medium(OST groups)orα-modified eagle's medi-um(MEM groups)for 3 weeks,the dentin slices observed by scanning electron microscope (SEM).Then the slices were wrapped successively with PDLCs sheets and CBB as new constructs(BMSCs or PDLCs/dentin/PDLCs sheets/CBB).The new constructs were transplanted into nude mice subcutaneously,8 week after transplantation,samples were havested and examined by HE staining.Re-sults:Enough cells and extracellular matrices were detected on the dentin slices by SEM in vitro.A little new immature cementum-like tissue without periodontal-like tissue on the surface of the new construcs was observed in OST groups.By contrast,in MEM groups,periodontal-like without immature cementum-like tissue formation was observed.Conclusion:Dentin proseeded with BMSCs or PDLCs incorporated with PDLCs sheets and CBB cultured by MEM can promote periodontal-like tissue regeneration.Cultured with osteooinduction medium can promote cementum-like tissue regeneration.