Shape memory polymer (SMP) is a new type of functional materials.SMP has lots of advantages such as low density,light weight,high shape-recovery rate and low cost,but its stiffness is low and shape recovery force is small.Therefore,the reinforced SMP composite has become a hot research focus.The latest progress of reinforced SMP composite is reviewed,with the emphasis placed on the analysis of the influence of reinforced materials on SMP properties including short fibers,particles and the mixture of fibers and particles.Finally,problems exist in the study and the prospect of reinforced SMP composite are discussed briefly.

Oxytocinreceptor(OTR)isamemberofG -proteincoupledreceptor ,whichhasbeen foundinmanytumorsandcancercelllines .Manystudiesrevealedoxytocin(OT)mayinhibitthetumorand cancercellgrowthandproliferation ,butthemechanismofthisinhibitionisnotwellknown .Someexperiments indicatedcAMP -PKAsystemparticipatesinthesignaltransductionthatoxytocininhibitsthecancercellpro liferation .However ,otherexperimentsshowedthesignaltransductionforoxytocinintheHs5 78Tcarcinosaco macellisthesameasthatinthenormalcells .Inthisreview ,therelationshipbetweenOTRandtumorsare summarized . [

Objective:To explore the value of magnetic resonance imaging (MRI) parameters combined with serum macrophage migration inhibitory factor (MIF) and microRNA-1203 (miR-1203) in the early diagnosis of hepatocellular carcinoma (HCC) and its relationship with efficacy.Methods:From October 2017 to October 2019, 100 patients with HCC in Hunan Provincial Hospital of Traditional Chinese Medicine were selected as the observation group. 92 patients with benign liver tumor and 102 healthy people were randomly selected as the control group and normal control group. The clinicopathological features, MRI parameters [hepatic artery perfusion index (HPI), volume transfer constant (K trans)], serum MIF and miR-1203 levels were compared among the three groups; the value of MRI parameters, serum MIF and miR-1203 in single and combined diagnosis of HCC was explored; the relationship between each index and curative effect of HCC patients was analyzed. Results:The levels of HPI, K trans, serum MIF and miR-1203 in observation group were higher than those in control group and normal control group ( P<0.05); There were significant differences in HPI, K trans, serum MIF and miR-1203 levels among patients with different tumor length, differentiation degree, Child Pugh grade and distant metastasis in the observation group ( P<0.05). Among HPI, K trans and serum MIF, miR-1203, the specificity of HPI and K trans for diagnosis of HCC were the largest (94.57%), and the sensitivity of K trans for diagnosis of HCC was the largest (75.00%); the area under the curve (AUC) of the combined diagnosis of HCC was 0.879, which was greater than the AUC of the single diagnosis of HPI, K trans and serum MIF, miR-1203 (0.753, 0.793, 0.792, 0.809); the optimal sensitivity and specificity of the combined diagnosis were 79.00% and 86.96%, respectively; the levels of HPI, K trans, serum MIF, and miR-1203 in effective patients in the observation group were lower than those in the ineffective patients after treatment ( P<0.05); the clinical efficacy of HCC patients were significantly correlated with the levels of HPI, K trans, serum MIF and miR-1203 ( P<0.05). Conclusions:The MRI parameters HPI, K trans and serum MIF, miR-1203 levels in patients with HCC increased significantly, which has high application value in assisting clinical diagnosis of HCC, and is closely related to the clinical efficacy of patients, and has great development potential in efficacy evaluation.

Objective To establish an effective DNA isolation method for neonatal disease screening,so as to explore its application to the methylation detection.Methods The 20 dried blood spots samples were randomly divided into 2 groups according to the gender:the traditional method group (n =10) and the improved kit method group(n =10).The DNA quality was evaluated based on its concentration,integrity and whether it could be used in polymerase chain reaction (PCR).These DNA samples with or without bisulfite treatment were used as template in the methylation-specific polymerase chain reaction (MSP).The methylation levels of Leptin and tumor necrosis factor-α (TNF-α) gene promoter region were detected.Results DNA concentration of the improved kit method [(5.70 ± 0.81) mg/L] was significantly higher than that of the traditional method [(3.50 ± 0.45) mg/L] (t =2.79,P ＜ 0.05),and biochemical analyzer analysis showed a better DNA integrity.Agarose gel electrophoresis revealed that 18S gene fragment could be successfully amplified by PCR method,suggesting its potential application to PCR study.MSP results showed different DNA methylation levels of Leptin and TNF-α genes promoter regions from various samples.Conclusions The improved kit method can effectively extract DNA from dried blood spots samples,and these DNA can be used in methylation research.The study can provide a new research direction and technical method to reveal the pathogenesis of disease from the perspective of DNA methylation.

Background and purpose:Connective tissue growth factor(CTGF) is a member of CCN family,it has been reported that CTGF involve in many biological processes and various pathological conditions.In our study,the correlation of CTGF expression and biological effects on breast cancer cell lines were investigated.Methods:The eukaryotic expression vectors containing CTGF open reading frame(ORF) pcDNA3.0/CTGF were constructed and transfected into breast cancer cell lines.The relationship between CTGF expression and breast cancer cell growth ability and proliferation,cell cycle distribution,apoptosis,cell motility and invasive capacity in vitro were observed.Results:Upregulation of CTGF expression in MCF-7 cell line could inhibit its growth ability and proliferation,increased the proportion of G0G1 phase cells,enhanced apoptosis and inhibited its invasive ability in vitro.Downregulation of CTGF expression in MDA-MB-231 cell line increased its growth ability and proliferation,decreased apoptosis and promoted its invasive ability in vitro.There were no differences of cell motility among different groups in MCF-7 and MDA-MB-231 cell lines.Conclusions:CTGF can inhibit breast cancer cell growth by increasing cell apoptosis and/or the proportion of cells in G0G1 phase.CTGF can also inhibit breast cancer cell invasive ability.

The genetic structure of small-scale landscape groups of Oncomelania hupensis in Songzi City ,Hubei Province was identify in this study .O .hupensis snails were collected from 10 habitats in Songzi City ,of which 6 polymorphic microsat-ellite DNA loci (T6-17 ,P101 ,D11 ,B14 ,T4-33 ,and C22) were carried out with GeneScan .The number of alleles (Na) ,het-erozygosity (H) ,fixation index (FST) of snails in each group ,genetic distance between groups ,and the polymorphic informa-tion content (PIC) were calculated .Cluster analysis was then carried out based on genetic distance ,and hierarchical AMOVA calculation was conducted .By certified the shells of snails ,10 groups were divided into light and ribbed shell (including shallow rib and deep rib) .There were 141 alleles in total detection on 10 populations and 20-34 alleles in each locus ,which were detec-ted for 23 .5 on average .The average number of alleles in 6 loci was 1 .575 and the number of alleles in each locus was uneven , showing large numerical differences ranged from 0 .445 to 3 .060 .The average observed heterozygosity (Ho) ranged from 0 .438 ue between paired populations was from -0 .015 64 to 0 .252 47 ,and the polymorphic information content in the population ranged from 0 .528 -0 .857 ,showing a high polymorphism .Hierarchical AMOVA calculations showed that inter-individual variation of the snails occupied 88 .4% of the total variations .Cluster analysis revealed that the three ribbed shell population in Munu Kou Village ,Hengti Village and Yixing Village first clustered to the three light shell population in Mashizizu Village , Mingzhu Village and Tuqiao Village ,then clustered to the light shell population in Tuanshan Village and Jiama Cao Village with the two shallow rib population in Desheng Village and Tianmu He Village .Under the different landscape environment of Songzi Area ,there were different shells presenting on the morphology of O .hupensis .Although there was a rich diversity on O .hupensis of Songzi City ,the genetic differences mostly present in individuals .Different groups didn’t show the significant genetic differentiation among the different shell morphology of O .hupensis .

Objective To analyze the topological properties of genomic-wide genetic interaction network in yea; Methods The topological properties of genomic-wide genetic interaction network in yeast were calculated by the graph theoi Results A power law fit the degree distribution well in the genomic-wide genetic interaction network in yeast, with t exponent approaching 3. TheNode's degree followed awide-tail distribution, with the average degree being 87. Two thirds the genes had genetic interaction via only one gene, and about one third of the genes had genetic interaction via only 2 gene The average clustering coefficient was 0. 047. Conclusion The gene function in yeast is usually multiple and the functioi interaction between genes is highly condensed.

Objective To analyze the topological properties of genomic-wide genetic interaction network in yeast. Methods The topological properties of genomic-wide genetic interaction network in yeast were calculated by the graph theory. Results A power law fit the degree distribution well in the genomic-wide genetic interaction network in yeast, with the exponent approaching 3. TheNode's degree followed awídc-taíl distribution, with the average degree being 87. Two thirds of the genes had genetic interaction via only one gene, and about one third of the genes had genetic interaction via only 2 genes. The average clustering coefficient was 0. 047. Conclusion The gene function in yeast is usually multiple and the functional interaction between genes is highly condensed.

【Objective】 To observe the promoting action of spleen-strengthening and Qi-promoting herbs on enteral nutrition(EN) for patients after abdominal surgery.【Methods】 Sixty patients after abdominal surgery were equally randomized into groups A and B.The two groups received oral use or tube feeding of enteral nutrition(Fresubin).Group A received oral use or tube feeding of the decoction with spleen-strengthening and Qi-promoting actions(composed of Radix Pseudostellariae,Rhizoma Dioscoreae,Fructus Hordei Germinatus,Pericarpium Citrus Reticulata,Radix Notoginseng) additionally.The treatment lasted one week.Before and after EN treatment,the contents of hemoglobin(Hb),total lymphocyte count(TLC),albumin(Alb),serum total protein(TP) and the ratio of albumin and globumin(A/G) were observed.【Results】After EN treatment,the above laboratory parameters were increased in the two groups as compared with those before treatment(P

Objective To establish the chromatographic fingerprint of Curcuma wenyujin by HPLC.Methods The chromatographic fingerprint of C.wenyujin was established by HPLC with Shimadzu VP-ODS C18 column(250 mm?4.6 mm,5 ?m),acetonitrile-water(0.1 phosphoric acid) gradient elution,the flow rate of 1.0 mL/min,column temperatures of 30 ℃,and detective wavelength at 210 nm.ResultsTaking germacrone as the reference peak,14 common-peaks were selected as the fingerprint peaks.The similarities among samples of C.wenyujin among 19 approved samples and their standard chromatographic fingerprints were calculated with a software "Similarity Evaluation System for Chromatographic Fingerprint of Chinese Materia Medica" published by GPC(Version 2004A) and cluster analysis.ConclusionThis method with better accuracy and reproducibility could be used in the quality control of C.wenyujin.