Objective To test the hypothesis that calpain 10 gene (CAPN 10) contributes to the genetic susceptibility to type 2 diabetes in Chinese population.Methods Case control study. PCR RFLP method was used to determine the distribution of allele and genotype frequencies of SNP43 polymorphism (G/A) and SNP 19 polymorphism (1/2) in the intron 3 of calpain 10 gene in 211 type 2 diabetes patients and 127 normal control subjects. Results The frequency of "G" allele of the SNP43 in type 2 diabetes patients was significantly increased as compared with that in the control subjects (91.9% vs 85.8%, P =0.01). The distribution of allele and genotype frequency of the SNP19 (1/2) polymorphism were equal in diabetes and control groups.In addition, we also observed the association between GG genotype and increased body mass index and waist to hip ratio in the control group.Conclusion This study suggested that calpain 10 gene may contribute to the genetic susceptibility of type 2 diabetes in Chinese population.

Objective To investigate the inlfuence of overexpression of miR-26b on the secretion of adipokines dur-ing human adipocyte differentiation. Methods Human preadipocytes were infected with the hsa-miR-26b over-expressing lentivirus and were induced to differentiate, and then the levels of adipokines (IL-6, leptin, resistin, TNF-α) at different time points during differentiation were measured by ELISA. Results Compared with control group, decreased secretions of both IL-6 and leptin, and increased secretion of resistin were found during the differentiation of human adipocytes in miR-26b overexpressed group. However, the secretion of TNF-αwas not measured in both groups. Conclusion The miR-26b can improve the inlfammation and insulin resistance of human adipocytes, which will provide potential targets for obesity treat-ment.

Objective To predict the biological process and signaling pathways in which hsa-miR-1908 might be in-volved by a series of bioinformatics analysis, so as to lay foundations and provide theoretical basis for the further studies of hsa-miR-1908 biological function in human preadipocytes. Methods The sequence of hsa-miR-1908 was acquired from miR-Base database, and target genes of hsa-miR-1908 were predicted by miRanda, and then the intersection of the results and the results of gene-chip as gene set were further analyzed by gene ontology and pathway enrichment. Results The hsa-miR-1908 had some conserved property among different species. The functions of the target genes were enriched in Wnt receptor signal-ing pathway through beta-catenin, cell cycle, cell apeptosis and other biological processes. The GnRH signaling, MAPK sig-naling, insulin signaling, cell cycle signal transduction pathways and signaling pathway in pancreatic cancer were signiifcantly enriched. Conclusions The target genes set of hsa-miR-1908 were enriched in multiple biological process which are related with the obesity. This study provides guidance for the further study in human preadipocytes.

Objective To study the impact of sucrose analgesia on pain response and salivary cortisol levels in preterm infants.Method Preterm infants admitted to our hospital between January 2014 and October 2016 with gestational age ＜ 34 weeks,birth weight ＜ 2 000 grams,and length of hospital stay ≥ 14 days were prospectively assigned into two groups.The intervention group received 0.3 ～ 0.5 ml of 12％ sucrose solution two minutes before each painful procedure,while the control group received none.At time of discharge and at 8 months of corrected age (CA),pain response was measured,saliva samples were collected and salivary cortisol levels were assayed using Enzyme Immunoassay Kit before and after pain stimulus.Result A total of 82 infants were included in our study,42 in the intervention group,and 40 in the control group.There were no statistically significant differences between two groups in pain response at discharge and 8 months of CA.At time of discharge and at 8 months of CA,infants in intervention group had higher salivary cortisol levels than in control group at time of discharge and 8 months of CA after pain stimulus [6.8 (5.6,11.7) ng/ml vs.5.4 (2.6,10.8) ng/ml,5.0 (3.3,5.6) ng/ml vs.4.8 (3.0,5.5) ng/ml] after log transformation,two groups were statistically significant (P ＜ 0.05).However,before the pain stimulus,no differences were found between two groups.Multiple stepwise regressions analysis showed that salivary cortisol level post pain stimulus was negatively related to the total number of pain stimulus,and positively related to sucrose analgesia at discharge and 8 months of CA.Conclusion Sucrose analgesia may mitigate the negative effect of repeated pain stimulus on cortisol regulation in preterm infants,however,may have no influence on pain response of them.