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Porphyromonas gulae 41-kDa fimbriae induced osteoclast differentiation and cytokine production.

Sasaki H, Watanabe K, Toyama T, Koyata Y, Hamada N - J. Vet. Med. Sci. (2014)

Bottom Line: Osteoclast differentiation was significantly enhanced by treatment with the 41-kDa fimbrial protein in a dose-dependent manner.The total area of pits formed on the dentine slices with osteoclasts incubated with the 41-kDa fimbrial protein was significantly greater than that of the control.These results suggest that P. gulae 41-kDa fimbriae play important roles in the pathogenesis of periodontal disease.

View Article: PubMed Central - PubMed

Affiliation: Department of Microbiology, Kanagawa Dental University, Yokosuka, Kanagawa 238-8580, Japan.

ABSTRACT
Porphyromonas gulae is considered to be associated with canine periodontitis. We have previously reported that the P. gulae American Type Culture Collection (ATCC) 51700 comprised 41-kDa fimbriae. The purpose of the present study was to demonstrate the roles of 41-kDa fimbrial protein in periodontal disease. In this study, we examined the involvement of the 41-kDa fimbrial protein in osteoclast differentiation and cytokine production in murine macrophages. Furthermore, alveolar bone resorption induced by P. gulae infection in rats was evaluated. To estimate osteoclast differentiation, bone marrow cells and MC3T3-G2/PA6 cells were cultured with or without the 41-kDa fimbrial protein for 7 days. BALB/c mouse peritoneal macrophages were stimulated with the 41-kDa fimbrial protein, and the levels of interleukin (IL)-1β and tumor necrosis factor (TNF)-α production were determined by enzyme-linked immunosorbent assay. Osteoclast differentiation was significantly enhanced by treatment with the 41-kDa fimbrial protein in a dose-dependent manner. The total area of pits formed on the dentine slices with osteoclasts incubated with the 41-kDa fimbrial protein was significantly greater than that of the control. The purified 41-kDa fimbrial protein induced IL-1β and TNF-α production in BALB/c mouse peritoneal macrophages after 6 hr of incubation in a dose-dependent manner. The bone loss level in rats infected with P. gulae was significantly higher than that of the sham-infected rats. These results suggest that P. gulae 41-kDa fimbriae play important roles in the pathogenesis of periodontal disease.

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Electron microscopy. Transmission electron micrographs of P. gulaeATCC 51700 (A) and purified 41-kDa fimbriae (B). Bars, 0.2 µm.
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fig_001: Electron microscopy. Transmission electron micrographs of P. gulaeATCC 51700 (A) and purified 41-kDa fimbriae (B). Bars, 0.2 µm.

Mentions: Isolation and purification of the 41-kDa fimbriae from P. gulae: Fimbrialstructures were observed on the cell surface of P. gulae by transmissionelectron microscopy using the negative staining technique (Fig. 1AFig. 1.


Porphyromonas gulae 41-kDa fimbriae induced osteoclast differentiation and cytokine production.

Sasaki H, Watanabe K, Toyama T, Koyata Y, Hamada N - J. Vet. Med. Sci. (2014)

Electron microscopy. Transmission electron micrographs of P. gulaeATCC 51700 (A) and purified 41-kDa fimbriae (B). Bars, 0.2 µm.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4383771&req=5

fig_001: Electron microscopy. Transmission electron micrographs of P. gulaeATCC 51700 (A) and purified 41-kDa fimbriae (B). Bars, 0.2 µm.
Mentions: Isolation and purification of the 41-kDa fimbriae from P. gulae: Fimbrialstructures were observed on the cell surface of P. gulae by transmissionelectron microscopy using the negative staining technique (Fig. 1AFig. 1.

Bottom Line: Osteoclast differentiation was significantly enhanced by treatment with the 41-kDa fimbrial protein in a dose-dependent manner.The total area of pits formed on the dentine slices with osteoclasts incubated with the 41-kDa fimbrial protein was significantly greater than that of the control.These results suggest that P. gulae 41-kDa fimbriae play important roles in the pathogenesis of periodontal disease.

View Article: PubMed Central - PubMed

Affiliation: Department of Microbiology, Kanagawa Dental University, Yokosuka, Kanagawa 238-8580, Japan.

ABSTRACT
Porphyromonas gulae is considered to be associated with canine periodontitis. We have previously reported that the P. gulae American Type Culture Collection (ATCC) 51700 comprised 41-kDa fimbriae. The purpose of the present study was to demonstrate the roles of 41-kDa fimbrial protein in periodontal disease. In this study, we examined the involvement of the 41-kDa fimbrial protein in osteoclast differentiation and cytokine production in murine macrophages. Furthermore, alveolar bone resorption induced by P. gulae infection in rats was evaluated. To estimate osteoclast differentiation, bone marrow cells and MC3T3-G2/PA6 cells were cultured with or without the 41-kDa fimbrial protein for 7 days. BALB/c mouse peritoneal macrophages were stimulated with the 41-kDa fimbrial protein, and the levels of interleukin (IL)-1β and tumor necrosis factor (TNF)-α production were determined by enzyme-linked immunosorbent assay. Osteoclast differentiation was significantly enhanced by treatment with the 41-kDa fimbrial protein in a dose-dependent manner. The total area of pits formed on the dentine slices with osteoclasts incubated with the 41-kDa fimbrial protein was significantly greater than that of the control. The purified 41-kDa fimbrial protein induced IL-1β and TNF-α production in BALB/c mouse peritoneal macrophages after 6 hr of incubation in a dose-dependent manner. The bone loss level in rats infected with P. gulae was significantly higher than that of the sham-infected rats. These results suggest that P. gulae 41-kDa fimbriae play important roles in the pathogenesis of periodontal disease.

Show MeSH
Related in: MedlinePlus