Intermittent Compressive Stress Enhanced Insulin-Like Growth Factor-1 Expression in Human Periodontal Ligament Cells

Figure 1

Intermittent mechanical stress-induced IGF-1 expression. HPDLs were treated with intermittent mechanical stress for 2 h, 4 h, 8 h, and 24 h. The IGF-1 mRNA expression was determined using real-time PCR. The dot line represented the expression levels of the control. Asterisks indicated statistically significant difference.