期刊
JOURNAL OF ORAL PATHOLOGY & MEDICINE
卷 45, 期 7, 页码 510-515出版社
WILEY
DOI: 10.1111/jop.12409
关键词
immunogold method; melatonin; salivary gland
资金
- Sardinia Regional Government
BACKGROUND: Circulating melatonin is believed to reach body fluids by crossing passively the cell membranes, but alternative ways for melatonin transport also are hypothesized. This investigation was carried out to furnish ultrastructural evidences for melatonin transport by salivary gland cells in order to indicate plausible routes by which circulating melatonin can reach saliva. METHODS: Bioptic samples of parotid, submandibular and labial glands were processed for the electron microscopy and treated to demonstrate melatonin reactivity by the immunogold staining method. RESULTS AND CONCLUSIONS: The preferential sites of melatonin reactivity were the granules and vesicles of serous cells. Our results suggested that the acinar cells are able to store melatonin and that the hormone can be released into saliva through granule and vesicle exocytosis. The quantitative evaluation of labelling showed that the parotid gland is the most involved in the release of melatonin in saliva.
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