Biomedical subjects

Xiao-yang Mo

Publications and source records attributed to Xiao-yang Mo.

3 recordsLinked to original sources

PubMed2006

[Morphological changes of ECV304 cells infected by herpes simplex virus type 2].

OBJECTIVE: To observe the pathological changes and morphological alterations of ECV304 cells after the infection by herpes simplex virus type 2 (HSV-2) in vitro. METHODS: Passaged ECV304 cells were infected with HSV-2, TCID50 and morphological changes were observed by optical microscopy and tissue staining. RESULTS: One day after HSV-2 infection, swelling, rounding, and increase of thickened cytoplasmic granules occurred in the ECV304 cells, and on day 2, cell fusion was observed with weakened nuclear staining. CONCLUSION: ECV304 cells mostly undergo necrosis after HSV-2 infection without obvious evidence of cell apoptosis.

Cells, Cultured↗

PubMed2005

A novel sample labeling method with restriction display PCR for 60-mer oligonucleotide microarray.

OBJECTIVE: To investigate the value of restriction display PCR (RD-PCR) as a novel and expedient sample labeling method for high-density 60-mer oligonucleotide microarray. METHODS: Peripheral blood samples from three volunteers were collected and the total RNA was extracted from the peripheral blood mononuclear cells and labeled with RD-PCR protocol, followed by hybridization with Agilent Human 1B oligonucleotide microarrays in a two-color comparison format. The RNA from the same subject was divided into two aliquot and labeled with Cy3 and Cy5 respectively. The spots with significant difference between the foreground and local background intensities and those without significant difference between Cy5 and Cy3 signal intensities were selected for analysis. SPSS software was used to perform the statistical tests and plot generation. VSN packages were used under R language to remove the systematic array and dye biases. RESULTS: Totally 8744 common spots of the 3 microarrays were evaluated. The results demonstrated that RD-PCR could be a promising novel method for efficient labeling of microarray samples. Further analysis indicated the presence of adjustable biases derived from the array and incorporated dye in the labeling processes. The RD-PCR labeling showed better performance than the conventional approaches in regards to reproducibility of the quantitative signals for gene intensity and capability to label RNAs of lowly expressed genes. CONCLUSION: Given the evidence of the feasibility of using RD-PCR labeling in the field of high-density long oligonucleotide microarray, further optimization of the protocol may unleash the full potential of this novel labeling method.

Humans↗

PubMed2004

[A986S polymorphism of calcium-sensing receptor gene is not related to bone mineral density or bone size in premenopausal Chinese women].

OBJECTIVE: To investigate the association of a calcium-sensing receptor (CaSR) gene missense polymorphism, 986Ala/Ser (A986S), with bone mineral density (BMD) and bone size in healthy Chinese premenopausal women. METHODS: A total of 285 healthy Chinese premenopausal women (20.0 to 41.9 years of age) of Han nationality in the urban area of Shanghai were recruited for this study. The BMD and bone size of the spine and hip were measured by dual-energy X-ray absorptiometry. All the subjects were genotyped at the CaSR A986S site in exon 7 with polymerase chain reaction followed by restriction enzyme BsaHI digestion. The presence of the restriction fragment site was represented by alanine (A), while its absence by serine (S), rendering the genotypes AA, AS, and SS. RESULTS: The genotype AS was rare and SS absent in these Chinese women, and no significant differences in the BMD or bone size of either the spine or hip were found between the two genotypes. CONCLUSION: Given the important role of the CaSR in calcium metabolism, further studies with useful genetic markers may have better chances to define the association of the CaSR gene with bone phenotype variations.

Adult↗