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Volume 26 , Issue 2
March/April 2006

Pages 191196

Molecular Changes in the Gingival Epithelium Associated with Necrotizing Ulcerative Periodontitis: A Case Report

Bettina Dannewitz, DDS, Dr Med Dent / Peter Eickholz, DDS, Dr Med Dent, PhD / Annette Kohl, MTA / Gerda Komposch, DDS, Dr Med Dent, PhD / Pascal Tomakidi, Dr Rer Nat, PhD

PMID: 16642908
DOI: 10.11607/prd.00.0677

A case of necrotizing ulcerative periodontitis (NUP), the most severe inflammatory periodontal disorder caused by plaque bacteria, is shown. Clinically, the gingiva showed distinct signs of ulceration, and radiography revealed horizontal bone loss. Indirect immunofluorescence, carried out on frozen sections of tissue specimens obtained from the NUP lesion, exhibited clear expression of atypical keratin K19, particularly in basal cells, when compared to noninflamed gingiva. Moreover, NUP tissue showed extensive intraepithelial abundance for the basement membrane component laminin-1/10 and the extracellular matrix molecule tenascin. Strong expression of integrin subunit av and matrix metalloproteinase-13 in conjunction with interleukin 1-beta further discriminated NUP gingival epithelium from normal tissue. The results suggest that NUP is associated with changes in the expression and topography of the analyzed molecules in the gingival epithelium, which in turn may reflect the fast progression of the disease.
(Int J Periodontics Restorative Dent 2006;26:191196.)

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