Although dyslipidemia is common in the patients with end-stage renal disease undergoing dialysis, it is still controver-sial in the efficacy and safety of lipid-modulating agents used in the patients. In this paper, current large-scale randomized controlled trials and observational studies were reviewed, and the influence and characteristics of dyslipidemia as well as the application of com-mon lipid-modulating agents in dialysis patients were summarized. The current clinical evidence suggested that the use of statins with or without ezetimibe could effectively reduce the level of blood lipid in dialysis patients without increased risk of adverse events, while it had limited role in cardiovascular protection;fibrates had higher risks in dialysis patients; nicotinic acids had limited use mainly be-cause of their unbearable side effects.

Objective To explore the potential significance of long noncoding RNA (lncRNA) expressed in endoplasmic reticulum stress response also known as unfolded protein response ( UPR) .Methods Mouse embryonic fibroblasts ( MEFs) were isolated from 13 day mouse embryo , cultured and treated with tunicamycin for 16 hours to induce UPR .The untreated MEFs were used as negative control .The lncRNA expression profile was examined by a customized lncRNA array. The results of array assay were validated by real-time PCR and further analyzed by bioinformatics. Results There were 411 lncRNAs whose expression was signficantly up-regulated in MEFs treated with tunicamycin as compared with the controls ,while 790 lncRNAs were significantly down-regulated. A number of significantly alter lncRNAs were validated by real-time PCR. A further bioinformatics analysis of lncRNA profile suggested that many cold be in-volved in multiple cellular pathways. Conclusion Our lncRNA expression profile and bioinformatics studies srongly suggest that many lncRNAs can be regulated in the cells under UPR and could also in turn regulate UPR and other cellular processes.

Objective To investigate the electromyographic changes in the anterior temporal and masseter muscles of patients with long-term unilateral mandibular first molar loss. Methods Eighteen patients with one-year or more than one-year loss of unilateral mandibular first molar were selected as experimental group,and eighteen volunteers from similar places,had similar dietary habits in the same age and gender with normal occlusion were recruited as control group. Surface electromyography was used for the evaluation of the electrical activities of bilateral anterior temporal and masseter muscles in mandibular postural position ( MPP ) , maximal clenching in intercuspal position ( ICP) and masticating situations. The data were analyzed using SPSS 17. 0 software package to compare the differ-ences among groups. Results The average electrical activities of anterior temporal and masseter muscles in MPP of experimental group were significantly higher than the contral group,and the missing side was higher than the non-missing side ( P <0. 05 ) . The average electrical activities of anterior temporal and masseter muscles in maximal clenching and masticating were significantly lower than the control group,especially in the masticating situation( P<0. 05 ) . The asymmetry index of anterior temporal muscles and masseter muscles in MPP and maximal clenching were significantly different(P<0. 05). Conclusion Long-term loss of unilateral mandibular first molar can affect the electrical activities of the anterior temporal muscles and masseter muscles in the experimental group,especially for the missing side and in the masticating situation. These results also suggest that it might be one of the potential factors on mastication system disorders.

Repeat prescription is adopted in Singapore as a convenient measure for patients with chronic diseases.On the one hand, it can avoid patients''inconvenience caused by frequent visits to hospitals.On the other hand, it reduces the waste of medical resources.In recent years, Singapore has also been using modern technology and measures to expand the medication refill service actively in order to enhance work efficiency, reduce waiting time and promote drug safety, thus to improve patients'' satisfaction.With the increasing medical pressure and the deepening of medical reform, the repeat prescription model in Singapore shows positive enlightenment to China.

Objective To study the application of photodynamic therapy (PDT) for dental caries prevention using whole body luminescence fiber,and to investigate the effects of PDT on the content of Ca and P in rat molar enamel.Method The rat dental caries model was established by inoculating with S.mutans.Eighty male rats were randomly divided into five groups,including three experimental groups:17 mW (8 mW/cm2) PDT (group A),34 mW (15 mW/cm2) PDT (group B),68 mW (30 mW/cm2) PDT (group C),a positive control group:20 g/L NaF solution (group D),and a negative control group:0.9％ physiological saline (group E).The experimental groups were treated by 40 μg/mL hematoporphyrin monomethyl ether (HMME) and 650 nm diode laser irradiation.The experiments were conducted for 4 weeks.The contents of Ca and P in the molars of each group were measured by inductively coupled plasma emission spectrometry.Results The contents of Ca and P in group B,C and D after PDT were significantly higher than those in group A and E (all P＜0.05).The contents of Ca and P in group A showed no significant difference before and after PDT,while those in groups B and C showed significant increase after PDT (all P＜O.05).The increment of Ca in group A after PDT was lower than that in group D (P＜0.05),while those in group B and C were significantly higher than those in group D (all P＜0.05).There was no significant difference in the increment of Ca and P between group B and C after PDT.Conclusions In the range of the experimental parameters,the PDT promoted effect of tooth remineralization is better than 20 g/L NaF.The levels of Ca and P in the tooth enamel can be promoted by PDT treatment,and the contents of Ca and P are related to the pewer of PDT.The effect of low power PDT on the remineralization of enamel is not obvious.The contents of Ca and P in the tooth enamel are increased with laser power of PDT.When the laser power increased to a certain value,the change in contents of the two elements is not obvious.PDT can maintain the tooth remineralization microenvironment.

Objective To analyze the policy support of rural doctors for the essential medicine system,and explore the main influence factors and mechanism affecting the support degree.Methods 621 rural doctors from five cities in Shandong province were subject to a stratified random sampling for a quantitative questionnaire,to build a hypothesis model of policy support of rural doctors,which is verified using factor analysis and path analysis.Results 59.1% of rural doctors support the essential drugs policy.It was found that the essential medicine factor,the factor to influence the practitioner,and the supporting policy factor had a direct impact on policy support of rural doctors,with the effect of 0.305, 0.1 59 and 0.135 respectively;Essential medicine factor and the supporting policy factor indirectly influence the policy support of rural doctors through the factor to influence practitioners,with the effect of 0.065 and 0.032 respectively.Conclusion The essential medicine system needs to emphasize such rationality as the quality,list and pricing of essential medicines;it is imperative for the government to better oversee the purchase and supply of essential drugs,to cater to the interests of rural doctors,to encourage the enforcement of the system,and promote the development of village clinics.

A series of andrographolide derivatives with the structure of 12-N-substituted-14-deoxyandrographolide were synthesized from the parent compound andrographolide.Their antitumor activities were preliminarily evaluated on various cancer cell lines and compound 4d stood out due to its potent growth inhibitory effect in comparison with andrographolide.Compound 4d also demonstrated significant antitumor effect on human hepatoma HepG2cells in vitro and on sarcoma 180 (S180) and hepatoma 22(H22)-bearing mice in vivo.Then,the apoptosis induced by compound 4d in HepG2cells was detected by Annexin V/PI double staining assay.Further mechanic study showed that the expression of p53 and Bax was significantly elevated and that of Bcl-2was downregulated in 4d-treated HepG2cells.Collectively,these data suggested that compound 4d had remarkable antitumor effect both in vitro and in vivo and could effectively induce apoptosis via a p53-dependent pathway in HepG2 cells,thus deserving further investigation.

Objective To compare the prevalence and correlation factors of chronic kidney disease (CKD) in urban and rural areas in Minhang district of Shanghai through the social economic and clinical data of the elderly population.Methods Jiangchuan Street and Pujiang town were randomly selected to represent the urban and rural population in Minhang district of Shanghai,respectively.Based on the over-60-year old people health examination program,6151 objectives with complete clinical-epidemiological data and bio-chemical index were investigated.The prevalence of CKD in urban and rural areas was compared,and the correlation factors for the urban and rural CKD were evaluated by multiple logistic regression analysis.Results (1) The survey objectives with an average age of (69.57+7.04) years,including 4345 cases of the city residents and 1806 cases of rural residents,were enrolled.The age structures of urban and rural showed differences,population over 80 years old account for 13.1％ of the rural total,significantly higher than 7.4％ in the urban population (P ＜ 0.001).(2) The prevalence rates of diabetes,hyperuricemia,hyperlipidemia and hyperlipidemia in urban residents were higher than those in rural residents,which were 26.4％ vs 13.7％,9.9％ vs 2.3％,53.7％ vs 37.4％,51.4％ vs 15.6％ (all P＜ 0.01).The awareness rates of kidney disease and hyperlipidemia showed significant differences in urban and rural areas,which were 32.9％ vs 44.2％,84.6％ vs 62.8％ (all P ＜ 0.01).Compared with those in rural areas,the treatment rates of hypertension and high blood lipids in urban residents were increased (all P ＜ 0.01).(3) The prevalence of CKD was 23.4％.Female CKD prevalence was higher than male,respectively 26.3％ and 18.5％ (P ＜ 0.01).In urban CKD prevalence was 22.2％,lower than 25.2％ in rural.The prevalence rate of hematuria in urban areas was lower than in rural areas,but the prevalence rate of decline in renal function was higher (all P ＜ 0.05).With the increase of age,the prevalence rate of CKD was increased (P ＜ 0.01).(4) Age (OR=1.072),smoking history (OR=1.543),previous history of kidney disease (OR=1.351),diabetes (OR=1.373),hyperuricemia (OR=2.498),obesity (OR=1.364),history of interventional therapy (OR=1.896) had positive correlation with CKD in city elderly population,while the higher education (OR=0.676,OR=0.604) and drinking (OR=0.585) had negative correlation (all P ＜ 0.05).Age (OR=1.032),female (OR=1.860) had positive correlation with CKD in rural elderly population (all P ＜ 0.05).Conclusions CKD has been a common chronic progressive disease of the aged in Minhang district.The prevalence of CKD is higher in urban areas than in rural.Age is a common factor for CKD in urban and rural.Previous smoking,history of kidney disease,diabetes,hyperuricemia,obesity,history of interventional therapy,education and drinking have correlation with urban CKD patients.Female has correlation with rural CKD population.

Aim To study the inhibitory activities of potential new anti-influenza virus agents,3-O-β-chaco-triosyl pentacyclic triterpenoids against the entry of H5N1influenza viruses.Methods Three target com-pounds were designed and synthesized structurally re-lated to the lead compound 3-O-β-chacotriosyl dioscin derivative (1 )with inhibitory activities against H5N1 influenza viruses.The inhibitory activities of these tar-get compounds were tested at a cellular level pseudo vi-rus system targeting H5N1 influenza viruse entry.Re-sults All the compounds 1 a,1 b and 1 c showed po-tent inhibitory activities against the entry of A/Thai-land/Kan353/2004 pseudo virus into the target cells, of which compound 1 b showed the best inhibitory activ-ity with an IC50 value of (1.25 ±0.22)μmol·L-1. Conclusion The SARs analysis of these compounds indicated that replacement of the aglycone moiety of compound 1 with pentacyclic triterpenoids could in-crease antiviral activity.Different types of pentacyclic triterpen as aglycone residue had the significant influ-ence on the inhibitory activity (1 b >1 c >1 a),sug-gesting ursane type of triterpenes was superior to the two other kinds of triterpenes as aglycone residue.