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The upregulation of oncostatin M in inflamed human dental pulps
Author(s) -
Huang FM,
Tsai CH,
Yang SF,
Chang YC
Publication year - 2009
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1111/j.1365-2591.2009.01567.x
Subject(s) - oncostatin m , immunohistochemistry , pulp (tooth) , pathology , inflammation , medicine , pulpitis , immunology , interleukin 6
Aim To compare oncostatin M (OSM) expression in clinically healthy and inflamed specimened human pulp tissue. Methodology Thirty pulpal tissue specimens (15 clinically healthy and 15 inflamed) were obtained from extracted third molars with informed consent from patients. The levels of OSM were compared between clinically healthy pulp and inflamed pulp tissues using the semi‐quantitative reverse‐transcriptase polymerase chain reaction. In addition, immunohistochemistry was used to identify the in situ localization of OSM expression in pulp specimens. For testing of differences in the OSM between the clinically healthy and inflamed human dental pulps, the Wilcoxon–Mann–Whitney rank sum test was applied. Differences in OSM expression between tissue with low and high levels of inflammation were subsequently analysed by Fisher’s exact test. Results Inflamed pulps exhibited significantly higher OSM mRNA gene expression than clinically healthy pulps ( P < 0.05). Immunohistochemistry demonstrated that OSM expression was significantly higher in inflamed than clinically healthy pulps ( P < 0.05). OSM staining was detected in odontoblasts, fibroblasts, inflammatory infiltrates and endothelial cells. Conclusions Oncostatin M expression was elevated in inflamed pulp tissue. OSM is potentially involved in the disease process of pulpal inflammation.