The Role of Antimicrobial Peptides in
Periodontal Disease
335
regulated COX-2 expression by hBD-3 results in raised PGE
2
levels in cell-free culture
supernatants (Table 1), which is confirmed by an experiment using a specific inhibitor of
COX-2 activity, i.e., NS-398 (Figure 4). In summary, all of these findings suggest the
potential role and ability of hBD-3 in initiating localized inflammation within periodontal
tissues.
Table 1.
HBD-3 treatment results in elevated PGE
2
levels in cell-free culture supernatants in a
dose-dependent fashion. The cell-free culture supernatants from Figure 2 were collected and
analyzed for PGE
2
concentrations (pg/ml) by ELISA. This table is modified from
Chotjumlong and co-workers, 2010, with
permission from the publisher, Wiley-Blackwell.
Concentration (
g/ml)
Median PGE
2
concentration (range)
Control
36.40 (34.49-38.32)
hBD-1 0.3
35.91 (33.74-38.08)
hBD-1 1.0
39.22 (36.28-42.16)
hBD-1 3.0
37.42 (34.99-39.85)
hBD-1 10.0
37.35 (34.96-39.73)
hBD-1 40.0
39.61 (35.43-43.78)
hBD-2 0.3
38.30 (35.70-40.89)
hBD-2 1.0
37.58 (35.00-40.16)
hBD-2 3.0
39.64 (34.86-44.42)
hBD-2 10.0
40.51 (38.37-42.66)
hBD-2 40.0
36.82 (32.94-40.69)
hBD-3 0.3
21.33 (20.00-23.00)
hBD-3 1.0
35.55 (22.64-48.31)
hBD-3 3.0
53.16 (48.31-58.00)
hBD-3 10.0
260.59
*
(260.56-266.03)
hBD-3 40.0
1934.00
*
(1824.20-2048.10)
*denotes statistically significant difference from untreated
control cells atP<0.05.
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