Abstract:
:In the parotid glands (PGs) of intact male mice (12 weeks of age, ICR strain), immunofluorescence labels for a true tissue kallikrein, mK1, and for nerve growth factor (NGF) were recognized through the subluminal edges of the striated duct (SD) segments and interlobular duct segments. Because of their small size, secretory granules were not detectable by light microscopy in any of the duct cells. Full-fledged granular cells, containing large secretory granules that were visible by light microscopy, were induced in the SD segments of male mice after the injection of 5alpha-dehydrotestosterone (DHT) and triiodothyronine (T(3)), given either alone or in combination every other day for 2 weeks. A stronger effect was detected in the mice that were concomitantly injected with DHT and T(3), and more abundant, fully developed granular cells appeared in the SD segments of these mice. These full-fledged granular cells were immunoreactive for mK1, NGF, and epidermal growth factor, but not for renin. The present results indicate that some of the SD cells with small granules in the mouse PG can develop a granular cell phenotype, producing more kinds of growth factors, as a result of the actions of androgen and thyroid hormone.
journal_name
Odontologyjournal_title
Odontologyauthors
Kurabuchi S,Hosoi Kdoi
10.1007/s10266-008-0090-3subject
Has Abstractpub_date
2009-01-01 00:00:00pages
57-61issue
1eissn
1618-1247issn
1618-1255journal_volume
97pub_type
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