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Articles 1 - 4 of 4
Full-Text Articles in Microbiology
Interleukin-10 Mediated Autoregulation Of Murine B-1 B-Cells And Its Role In Borrelia Hermsii Infection, Vishal Sindhava, Michael E Woodman, Brian Stevenson, Subbarao Bondada
Interleukin-10 Mediated Autoregulation Of Murine B-1 B-Cells And Its Role In Borrelia Hermsii Infection, Vishal Sindhava, Michael E Woodman, Brian Stevenson, Subbarao Bondada
Microbiology, Immunology, and Molecular Genetics Faculty Publications
B cells are typically characterized as positive regulators of the immune response, primarily by producing antibodies. However, recent studies indicate that various subsets of B cells can perform regulatory functions mainly through IL-10 secretion. Here we discovered that peritoneal B-1 (B-1P) cells produce high levels of IL-10 upon stimulation with several Toll-like receptor (TLR) ligands. High levels of IL-10 suppressed B-1P cell proliferation and differentiation response to all TLR ligands studied in an autocrine manner in vitro and in vivo. IL-10 that accumulated in cultures inhibited B-1P cells at second and subsequent cell divisions mainly at the G1/S interphase. …
Yersinia Pestis Virulence Factor Yopm Undermines The Function Of Distinct Ccr2+Gr1+ Cells In Spleen And Liver During Systemic Plague, Zhan Ye
University of Kentucky Doctoral Dissertations
Yersinia pestis, the infective agent of bubonic and pneumonic plague, is classified as a category A agent of bioterrorism. YopM, a protein toxin of Y. pestis, is necessary for full virulence in a systemic plague mouse model with ambient-temperature grown bacteria. We used this model to identify the cells undermined by YopM. Natural killer (NK) cells were previously reported to be lost in spleen and blood in a YopM-associated way; however, NK cell depletion was found not to occur in liver, and ablation of NK cells had no effect on bacterial growth, indicating that NK cells are redundant …
Soil Organic Matter Fractions And Aggregate Distribution In Response To Tall Fescue Stands, I. P. Handayani, Mark S. Coyne, R. S. Tokosh
Soil Organic Matter Fractions And Aggregate Distribution In Response To Tall Fescue Stands, I. P. Handayani, Mark S. Coyne, R. S. Tokosh
Plant and Soil Sciences Faculty Publications
The study was conducted to evaluate the influences of tall fescue management on soil organic matter fractions and macro- and microaggregate distribution. Soil samples were collected from four paired adjacent fields consisting of five years of tall fescue mono and poly stands in Western Kentucky. Soil samples from 0 to 15 cm and 15 to 30 cm soil depths were analyzed for soil organic C and N, particulate organic matter C (POM-C) and N (POM-N), macro- and micro aggregate distribution and C-associated with macro- and micro- aggregates. Significant effects were observed between stands for all the properties, except total C, …
The Role Of Cuticle, Fatty Acids, And Lipid Signaling In Plant Defense, Ye Xia
The Role Of Cuticle, Fatty Acids, And Lipid Signaling In Plant Defense, Ye Xia
Theses and Dissertations--Plant Pathology
Systemic acquired resistance (SAR) is initiated upon recognition of specific microbial effectors by cognate plant resistance proteins and immunizes distal tissues of plants against secondary infections. SAR involves the generation of a mobile signal at the site of primary infection, which then translocates to and activates defense responses in the distal tissues via some unknown mechanism(s). This study shows that an ACYL CARRIER PROTEIN 4 (ACP4), GLABRA1 (GL1) and ACYL CARRIER BINDING PROTEINS (ACBP) are required for the processing of the mobile SAR signal in distal tissues of Arabidopsis. Although acp4, gl1 and acbp plants generate the mobile signal, …