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Original Article

Epidermal Growth Factor EGF in human saliva: Effect of age, sex, race, pregnancy and sialagogue

Pages 47-54 | Published online: 08 Jul 2009
 

Abstract

Saliva samples were obtained from volunteers either by spontaneous expectoration or after stimulation with citric acid (5%) and EGF was measured by a homologous radioimmounoassay.

The mean ± SEM of salivary human epidermal growth factor (hEGF) concentration in 70 males (aged 19-41) was 368.71 ±28.55 pmol/1 and 417.67 + 37.61 pmol/1 in 55 females (aged 19-45), P0.5. Values were found undetectable (32 pmol/1 in 6 prepubertal children. There was a tendency for hEGF to rise with age from about middle age but no significant racial or pregnancy related changes were observed. Stimulated sallivation with citric acid caused a fall in hEGF through a dilution effect.

These results show that age has an important influence on the hEGF concentration of resting saliva.

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