Elderly abuse is a serious social and public problem. This article summarizes the definition and classification of the elderly abuse and the correlation between abuse and the health status of the aged, to understand the concealment and complexity of elderly abuse, in order to provide a basis for improving the quality of life of the aged in China.

Drought stress could significantly affect the growth of medical plants, while moderate drought stress can effectively improve the quality of medicinal plants. Recently Herbgenomics promotes innovative research on the molecular mechanism for the quality of medicinal plants affected by drought stress. Here, we summarized the effects of drought stress on active compounds including alkaloids, flavonoids, terpenoids, phenols and saponins, and biomass of medicinal plants. Moreover, the studies on the quality of medicinal plants affected by drought stress using Herbgenomic technologies, the reactive oxygen species metabolism, and ABA signaling pathway, were reviewed. It is proposed to reveal the molecular mechanism for the quality of medicinal plants affected by drought stress, and to explore molecular markers closely related to drought-tolerance traits using medicinal model plant system based on Herbgenomics. This review provides a theoretical basis for improving the quality of medicinal plants, breeding of drought-tolerant medicinal plants and guiding agricultural production of traditional Chinese medicine.

Objective There are few researches for the serum betatrophin level and diabetic nephropathy (DN) recently.The aim of this study was to investigate the change of serum betatrophin level and the correlation of serum betatrophin and urinary albumin-to-creatintine ratio (UACR) in patients with type 2 diabetes mellitus (T2DM).Methods A total of 150 Chinese subjects from Mar 2013 to Jul 2016 were enrolled in the study, including 90 patients with type 2 diabetes and 60 healthy controls.According to the level of UACR, the diabetic patients were divided into two groups:normal UACR group (UACR<30 mg/g, n=60) and abnormal UACR group(UACR>30 mg/g, n=30).Serum betatrophin was measured by enzyme linked immunosorbent assay (ELISA).UACR was measured by turbidimetric inhibition immune assay.Blood glucose blood lipid were measured simultaneously.Results The serum betatrophin level was significantly higher in abnormal UACR group than that in normal UACR group[677.37±59.02 vs 486.13±41.22 pg/mL, P<0.05];Serum betatrophin level in T2DM patients was positively correlated with age (r=0.246), waist hip ratio (WHR) (r=0.240), fasting blood glucose (FPG) (r=0.234), 2 hour plasma glucose (2hPG) (r=0.363), glycosylated hemoglobin (HbA1c) (r=0.346), fasting insulin (FINS) (r=0.249), insulin resistance index (HOMA-IR) (r=0.309), blood urea nitrogen (BUN) (r=0.223), creatinine (CREA) (r=0.277) and UACR (r=0.244) (P<0.05),and negatively correlated with glomerular filtration rate (GFR) (r=0.308) (P<0.01).Serum betatrophin level in normal UACR group was positively correlated with age, HbA1c and UACR (P<0.05);Serum betatrophin level in abnormal UACR group was positively correlated with WHR (r=0.504), 2hPG (r=0.600), HbA1c (r=0.449), HOMA-IR (r=0.395) (P<0.05).The WHR, HbA1c, HOMA-IR and GFR were the influential factors of the serum betatrophin level.Conclusion The level of serum betatrophin was significantly increased in T2DM patients with albuminuria, which suggests that the betatrophin might play an important role in the pathogenesis of DN.

To understand the genetic origin and variation of porcine epidemic diarrhea virus (PEDV) prevailing in Henan province,a total of 22 PEDV positive samples from suckling piglets with severe diarrhea were collected from 16 pig farms and amplified by RT-PCR.ORF3 genes were then cloned into pMD18-T vector and sequenced.The result of sequencing showed that the length of ORF3 genes all were 675 bp which encoded 224 amino acids.The strains in this study had eight amino acid substitutions when compared with CV777 strain.The nucleotide homologies of the 22 strains were 95.9％-100％ and amino acid homologies were 96.4％-100％.By comparing with those of European strain CV777 and vaccine strain truncated CV777,the nucleotide homologies were 97.1％-97.9％ and 94.8％-95.4％,respectively.Based on the phylogenetic relationship of ORF3 genes,the PEDV field strains and PEDV reference strains could be divided into two groups,and all the field strains identified in this study belong to group 2.It suggested that prevalent PEDV strains in this study seem to be closely related to Henan isolates in previous years,domestic strains,Janpanese strains,American strains as well as Korean strains but differ genetically from European strains or vaccine strains used in China.This experiment analyzed the ORF3 gene sequence features in prevailing of Henan region in recent years,which provides a new support of epidemiology study and protein function research of PEDV ORF3 gene.

Objective To over-express human trefoil factor 2 (hTFF2) by Escherichia coli system and an-alyze its activities in promoting migration and anchorage-independent growth in SW480 colonic cancer cells. Meth-ods hTFF2 gene encoding mature peptide was obtained by RT-PCR, and the recombinant expression vector pET32a-hTFF2 was constructed. Then pET32a-hTFF2 was transformed into E. coli BL21-32a and TrxA-hTFF2 fu-sion protein was induced to over-express. The expressed product was isolated by Ni-NTA affinity chromatography, purified by dialysis and identified by Western blotting. The activities of the recombinant hTFF2 in promoting SW480 cells migration and anchorage-independent growth were analyzed by MicroChemotaxis Chamber migration assay and Soft-agar assay,respectively. Results The TrxA-hTFF2 fusion protein was expressed to 220 mg/L at high purity. In vitro model demonstrated that recombinant hTFF2 obviously enhanced SW480 cell migration activity and anchor-age-independent growth. Conclusion The recombinant hTFF2 can be expressed in E. coli with high production, purity and biological activities. And its roles in cell migration and anchorage-independent growth suggest that up-regulation of TFF2 in colonic cancer might be involved in cancer invasion and metastases.