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Articles by Kangduk Choi
Total Records ( 2 ) for Kangduk Choi
  Hyun-Kyung So , P.K. Mandal , O. Baatartsogt , Hee-Kyong Lim , Chi-Ho Lee , Jun-Heon Lee and Kangduk Choi
  To find the alternative for antibiotic this study was carried out to investigate the differentially expressed proteome between Salmonella gallinarum infected and uninfected control in the spleen lymphocytes of ROS broiler chicks fed with Korean mistletoe using proteomic approach. Total four protein spots were detected with differential expression from the chicken spleen lymphocyte in 2DE gels after silver staining. These proteins were characterized by MALDI-TOF MS and MS/MS. Two known proteins were up-regulated viz., Fatty Acid Binding Protein (FABP) and MRP-126 and 2 proteins were down regulated viz., ribosomal protein12, pyruvate kinase. In this experimental fowl typhoid infection in broilers fed with Korean mistletoe through proteomics approach significant differential expression of four proteins were found which appears to be candidate molecules for fowl typhoid.
  Oyungerel Baatartsogt , Prabhat Kumar Mandal , Hee-kyong Lim , Chi-Ho Lee , Jun-heon Lee and Kangduk Choi
  To understand the pathogenesis of PTA we studied the gene expression profiles of synovial cells of knee using gene chip analysis. PTA was induced by transection of the Anterior Cruciate Ligament (ACL) of left knee in 3 piglets. After sacrificing the piglet at 8 weeks, synovial cells were used for gene expression profiling using Affimetrix GeneChip. Affimetrix GeneChip Operating Software and Robust Multi-array Analysis (RMA) were used to identify differentially expressed genes. Expressions of selected genes were verified by RT-PCR. Histopathologic examination at 8 weeks showed overt chronic inflammation indicating the development of PTA. Through genome analyses it was observed that 87 known genes were up-regulated and 76 known genes were down regulated. By analyzing gene expression, we found differential expression of genes related to inflammatory and immune response, lipid binding, cell adhesion, growth activity and muscle development. Some of the important genes related to inflammatory and immune response are FAS, MCP-1, IL-18, IL-1α, IL-6, IL-7, OAS1, TLR4, MX2. RT-PCR result has confirmed the expression of selected genes (IL 6, IL 18, FABP 4, LPL and PLTP) in total RNA isolated from synovial cells. The genome analysis of synovial cells provided us new candidate molecules related to inflammation and immunity which may be useful to understand the pathogenesis of PTA.
 
 
 
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