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. 1986 Sep;124(3):479–487.

Unique radiosensitivity of serous cells in rhesus monkey submandibular glands.

L C Stephens, G K King, L J Peters, K K Ang, T E Schultheiss, J H Jardine
PMCID: PMC1888349  PMID: 3766706

Abstract

The saliva of patients undergoing radiation therapy for head and neck cancer contains increased acidic mucosubstances associated with a reduced serous component. To assess the morphologic features of the acute radiation damage in serous versus mucous acinar cells, the mixed serous/mucous submandibular glands of 18 rhesus monkeys were studied 1-72 hours after irradiation with single doses of 2.5-15.0 Gy. Selective degeneration and necrosis of serous cells was observed with doses of 2.5-7.5 Gy. Doses of 10.0-15.0 Gy caused widespread destruction of whole serous acini, but only isolated mucous cells were affected. The lesions were clearly expressed by 24 hours. Transient exudation of neutrophils was replaced by plasma cells and lymphocytes. Examination at 16, 22 and at 40 weeks revealed that late atrophy was caused solely by loss of serous acini in glands treated with 7.5 and 10.0 Gy. Although both serous and mucous acini were reduced in glands treated with 12.5 and 15.0 Gy, the atrophy was mainly due to loss of serous acini. The finding that serous cells are more vulnerable to radiation injury than mucous cells provides a morphologic explanation for early and late changes in saliva composition after salivary gland irradiation.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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