Characterization of the synthesis and secretion of transforming growth factor-alpha from salivary glands and saliva.

Abstract:

:Whole saliva collected from rat, mouse, and human sources was found to contain high concentrations of transforming growth factor-alpha (TGF alpha) when analyzed by RIA. The concentrations of TGF alpha in unstimulated human saliva (age, 30-45 yr; n = 10; 1.5 +/- 3.1 nM) was reduced with age (age, 55-70 yr; n = 10; 0.4 +/- 0.1 nM), but increased in oral pathologies manifested in xerostomia (age, 57-70; n = 6; 0.8 +/- 0.2 nM) and Paget's disease (age, 58-76; n = 8; 2.0 +/- 0.6 nM). Immunohistochemical localization of TGF alpha in the salivary glands of rats and mice revealed specific immunostaining of the granular ductal cells of the parotid and submandibular glands. Reverse transcription followed by polymerase chain reaction amplification of total RNA from the parotid and submandibular glands of rats and mice demonstrated the presence of TGF alpha mRNA, suggesting endogenous synthesis by the salivary glands. Thus, salivary glands appear to be an exocrine source for a second member of the epidermal growth factor-like growth factor family in the oral cavity.

journal_name

Endocrinology

journal_title

Endocrinology

authors

Humphreys-Beher MG,Macauley SP,Chegini N,van Setten G,Purushotham K,Stewart C,Wheeler TT,Schultz GS

doi

10.1210/endo.134.2.8299590

subject

Has Abstract

pub_date

1994-02-01 00:00:00

pages

963-70

issue

2

eissn

0013-7227

issn

1945-7170

journal_volume

134

pub_type

杂志文章