[Genetic polymorphisms of 19 STR loci in Shandong Han population].

Objective: To investigate the genetic polymorphisms of 19 STR Loci in Shandong Han population in order to provide the genetic data for paternity testing.

Methods: The genotypes of 205 unrelated individuals in Shandong Han population were typed by Goldeneye 20A kit to get the allele frequencies and population genetic parameters of 19 STR loci. Four kits, Identifiler kit, SinoFiler kit, PowerPlex 16 kit, and Goldeneye 20A kit, were compared with each other and used in the analysis of a special paternity test case.

Development of an oligochip for genotyping human leukocyte antigen-B51 and its clinical application.

Human leukocyte antigen (HLA) has been associated with Behcet's disease (BD), among which HLA-B51 is the most strongly associated genetic marker. The sandwich hybridization technique was applied in the design of the specific oligonucleotide probes to ensure the specific and accurate results. The probe-spotted chip was hybridized with the polymerase chain reaction (PCR) amplicons including nine suballeles (B*5101-B*5109) of exons 2 and 3 of HLA-B51 gene to determine the HLA-B51 genotypes.

[Analysis of false-positive associated with antibody tests for SARS-CoV in SLE patients].

To discuss the false-positive of serological diagnostic testing for coronavirus antibody in patients with systemic lupus erythematosus(SLE), 66 normal individual and 31 SLE with non-SARS patients were detected for SARS-associated coronavirus (SARS-CoV) antibody and RNA by enzymelinked immunosorbent assays(ELISA) and reverse transcriptase-polymerase chain reaction(RT-PCR). The result showed 2/66 cases(3.0%) were positive of SARS-CoV-IgG antibody and 66 cases were negative of SARS-CoV-IgM antibody in the 66 cases healthy controls; in 31 cases with SLE, positive rates of SARS-CoV-IgG and IgM antibody were 58.