Characterization of protein arginine methyltransferase of TgPRMT5 in Toxoplasma gondii.

Background: Protein arginine methylation is a prevalent post-translational modification. The protein arginine methyltransferase family (PRMT) is involved in many cellular processes in eukaryotes, including transcriptional regulation, epigenetic regulation, RNA metabolism, and DNA damage repair. Toxoplasma gondii, an opportunistic protozoan parasite, encodes five conserved PRMTs.

An outbreak of shigellosis in a Children Welfare Institute caused by a multiple-antibiotic-resistant strain of Shigella flexneri 2a.

From September 1 to October 27, 2015, an outbreak of bacillary dysentery occurred in the Shenzhen Children Welfare Institute (SCWI). The shigellosis was uncommon in Shenzhen and no related outbreak was reported during the last 5 years. An epidemiological investigation was conducted and the children and nursing workers in SCWI were surveyed for gastrointestinal symptoms; 28 of children reported having a diarrheal illness.

[Study on the serotype, virulence genes and pulsed field gel electrophoresis molecular typing of Vibrio parahaemolyticus isolated from clinical patients].

Objective: To investigate the serotype virulence genes and molecular typing characteristics of Vibrio Parahaemolyticus isolated from diarrhea samples among 2007 -2012.

Methods: The serotype was detected by using serological agglutination test. Thermo-stable direct hemolysin (tdh) and tdh-related hemolysin (trh) were detected by using real time PCR methods.

[Preliminary application of a mosquito densovirus-mediated artificial intron in vitro and in vive of mosquito].

An artificial intron consisting of the 5'-donor site (from the first intron of the human beta-globin gene) and the 3'-acceptor site (from the intron of an immunoglobulin gene heavy chain variable region) was obtained with a splice overlap extension PCR and was then inserted in frame into the coding sequence of nostructural protein NS1 gene fused to GFP gene in a recombinant mosquito densovirus plasmid p7NS1-GFP. The constructed plasmid was named as p7NS1-Intron-GFP. The plasmid p7NS1-Intron-GFP was co transfected with the helper plasmid pUCA into C6/36 cells, then the packaged recombinant and wild type viruses were purified and recovered.

[Method of detection of soluble HLA-I and soluble HLA-I level alteration in storage blood].

Aim of this study was to develop the detection method of soluble human leukocyte antigens I (sHLA-I) and to explore sHLA-I level alteration in storage blood and its significance. sHLA-I level in sera of 60 Guangdong normal individuals and sHLA-I concentration in blood components from 20 donors quantitatively were detected by sandwich ELISA. The results showed that sensitivity of this assay was 2.