We studied the status of parasite pollution in fish and shrimps in Fujian Province,and provided basis for prevention and control of parasite pollution and food safety in aquatic products.Stratified random sampling method was used,and Fujian Province was divide into Eastern,Southern,Western,Northern and Central five regions of Fujian province.Based on the data collected from the five regions between 2012 and 2016,digestion and compression methods were conducted to detect the levels of parasite metacercariae and larvae in both freshwater and marine products.Results showed that the total parasitoid infection rate was 5.15％ (130/2 524).The infection rate of trematode metacercariae and nematode larvae were 3.72％ (94/2524) and 1.43％ (36/2 524),respectively.Twenty-eight marine aquatic species were investigated and the infection rate was 17.25 ％ (88/510),in the form of Anisakis infection.The parasite infection rates in the five regions were 10.38％ (27/260) in Mindong,5.84％ (27/462) inMinnan,4.63％ (30/648) in Minxi,4.64％ (29/625) in Minbei and 9.91％ (103/1 039) in Minzhong.The freshwater products in Fujian Province have been polluted by parasites and are area-depended.The infection rate of marine aquatic products is kept in a high level.Fujian Province should strengthen the food safety and health publicity,take effective prevention and control strategies,and use early warning mechanisms to insure the food safety in province.

Objective To use the matrix assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF-MS) technique for detecting the mutation gene of neonatal non-syndromic hereditary hearing impairment gene in Guangxi and to investigate its effectiveness and feasibility in clinical application.Methods A total of 7 100 newborns were performed the hearing preliminary screening and secondary screening by adopting AABR.The genomic DNA was extracted by the heel blood spot.Twenty mutation characteristics of 4 deaf predisposing genes were detected by MALDI-TOF-MS.Results The pass rate of hearing screening in 7 100 newborns was 97.11％ (6 895/7 100),the positive rate of neonatal gene mutation was 3.54％ (251/7 100),in which the GJB2 gene mutation was in 131 cases,the carrying rate was 1.84％,235delC heterozygous mutation was in 108 cases.SLC26A4 gene mutation was in 93 cases,which dominated by 1229C＞T heterozygous mutation and IVS7-2A＞G heterozygous mutation,mtDNA12SRNA gene mutation was in 16 cases and GJB3 gene mutation was in 11 cases.Conclusion Adopting the MALDI-TOF-MS screening technique can increase the detection rate of hot point mutation in common deaf related genes and discover neonatal genetic NSHI from molecular level and provides the corresponding geneticconsulting guidance for early finding and predicting deaf occurrence,and formulating the interventional measures.

Objective: To observe the differential expression of miRNAs between human dental pulp stem cells(DPSCs) and stem cells from the apical papilla(SCAPs). Methods: DPSCs and SCAPs were isolated by immune-magnetic binding specific STRO-1 antibody separation system. Osteogenic and adipogenic differentiation of DPSCs and SCAPs were tested by ALP assay, alizarin red staining(ARS) and Oil Red O staining. Differential miRNA expression of DPSCs and SCAPs was screened by the Next generation sequencing. Target genes and their possible roles of these differential miRNAs were predicted using biological information analysis. Results: The results revealed that 7 miRNAs(hsa-miR-224-5p, hsa-miR-1247-5p, hsa-miR-3065-3p, hsa-miR-452-5p, hsamiR-767-5p, hsa-miR-4284, hsa-miR-146a-5p) were downregulated while no miRNAs was upregulated in SCAPs compared with DPSCs. 27 target genes which mainly involved in the cell migration, differentiation and apoptosis were found. Conclusion: Downregulation of some specific miRNAs might be related to the stemness of SCAPs.