Table 1.

Relative gene expression of ghrelin, its receptors GHS-R1a and GHS-R1b in various cell lines and healthy primary oral epithelial cells (OEC) analyzed by quantitative real-time PCR

	Ghrelin	GHS-R1a	GHS-R1b
BHY	3.34 ± 0.14#	10.91 ± 0.79#	4.50 ± 0.50#
HN	14.98 ± 0.66#	7.79 ± 1.38#	8.71 ± 0.74#
OEC	1.15 ± 0.34	2.91 ± 1.02	1.20 ± 0.31
HaCat	1.00 ± 0.11	1.00 ± 0.4	1.00 ± 0.07

GAPDH and β-actin served as reference genes. Relative gene expression was standardized to the mean values for both reference genes. Data are shown with standard error means. Significant differences compared to HaCat cells (set arbitrarily to “1”) are marked with ^# for p < 0.05