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Gene Expression Dynamics during Diabetic Periodontitis

delete2012-10-26
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OA
AI
O
Oelisoa M. Andriankaja
J
Johnah C. Galicia
G
G. Dong
肖
肖武 (Wu Xiao)
F
F. Alawi
D
Dana T. Graves *
DOI:10.1177/0022034512465292delete
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摘要

摘要

En 中文
Diabetes impairs the resolution of periodontal inflammation. We explored pathways altered by inflammation in the diabetic periodontium by using ligatures to induce periodontitis in type-2 diabetic Goto-Kakizaki rats. Ligatures were removed after 7 days, and rats were then treated with TNF inhibitor (pegsunercept) or vehicle alone and euthanized 4 days later. RNA was extracted from periodontal tissue, examined by mRNA profiling, and further analyzed by functional criteria. We found that 1,754 genes were significantly up-regulated and 1,243 were down-regulated by pegsunercept (p < 0.05). Functional analysis revealed up-regulation of neuron-associated and retina-associated gene clusters as well as those related to cell activity and signaling. Others were down-regulated by TNF inhibition and included genes associated with host defense, apoptosis, cell signaling and activity, and coagulation/hemostasis/complement. For selected genes, findings with microarray and rt-PCR agreed. PPAR-alpha was investigated further by immunohistochemistry due to its anti-inflammatory function and was found to be up-regulated in the gingiva during the resolution of periodontal inflammation and suppressed by diabetes. The results indicate that diabetes-enhanced inflammation both up- and down-regulates genes involved in cellular activity and cell signaling, while it predominantly up-regulates genes involved in the host response, apoptosis, and coagulation/homeostasis/complement and down-regulates mRNA levels of neuron, retina, and energy/metabolism-associated genes.
Keyword:
DAVID
diabetes
GSEA
inflammation
microarray
periodontal disease(s)
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期刊

Journal of Dental Research 封面图
Journal of Dental Research
IF:
5.9
论文数:
6.0K
被引数:
2.5W

机构

U
university of pennsylvania
学者数:
9.2W
论文数: 7.8W
被引数: 153
P
peking university
学者数:
11.9W
论文数: 8.7W
被引数: 146
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