TGF-beta 1 alone and in combination with calcium hydroxide is synergistic to TGF-beta 1 production by osteoblasts in vitro.

Abstract:

AIM:To examine the effects of calcium hydroxide (Ca(OH)2), transforming growth factor-beta (TGF-beta 1), and Ca(OH)2/TGF-beta 1 coadministration on TGF-beta 1 and interleukin-6 (IL-6) synthesis by early (subculture 1) and late (subculture 5) osteoblast cultures. METHODOLOGY:Early and late cultures were established using bone cells harvested from 21-day-old fetal rat calvaria. Cell cultures of both early and late osteoblasts were divided into four groups: group 1, control; group 2, cells challenged with Ca(OH)2; group 3, cells challenged with TGF-beta 1; and group 4, cells challenged with Ca(OH)2 and TGF-beta 1 in combination. TGF-beta 1 and IL-6 levels for all groups were determined using ELISA methodology. RESULTS:ANOVA and Tukey HS analyses revealed that osteoblasts of groups 3 and 4 significantly increased (P < 0.001) TGF-beta 1 synthesis in both early and late cultures of osteoblasts. IL-6 was not detected in any of the groups considered in this study. CONCLUSIONS:Exogenous TGF-beta 1 has an autocrine effect on cell cultures of osteoblasts. Administration of TGF-beta 1 alone or in combination with Ca(OH)2 increases the synthesis of TGF-beta 1 in osteoblast cultures. Ca(OH)2 and TGF-beta 1 are compatible when placed in a culture of osteoblasts. Ca(OH)2 provides a favourable environment for the anabolic effects of TGF-beta 1.

journal_name

Int Endod J

authors

Jaunberzins A,Gutmann JL,Witherspoon DE,Harper RP

doi

10.1046/j.1365-2591.2000.00326.x

keywords:

subject

Has Abstract

pub_date

2000-09-01 00:00:00

pages

421-6

issue

5

eissn

0143-2885

issn

1365-2591

journal_volume

33

pub_type

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