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Updated: Jul 1, 2026

Murine Salivary Functional Assessment via Pilocarpine Stimulation Following Fractionated Radiation
Published on: May 4, 2018
Metabolomics analysis of pathways underlying radiation-induced salivary gland dysfunction stages
Lauren G Buss1, Diogo De Oliveira Pessoa2, Justin M Snider1,3
1School of Nutritional Sciences and Wellness, University of Arizona, Tucson, AZ, United States of America.
None:
Salivary gland hypofunction is an adverse side effect associated with radiotherapy for head and neck cancer patients. This study delineated metabolic changes at acute, intermediate, and chronic radiation damage response stages in mouse salivary glands following a single 5 Gy dose. Ultra-high performance liquid chromatography-mass spectrometry was performed on parotid salivary gland tissue collected at 3, 14, and 30 days following radiation (IR). Pathway enrichment analysis, network analysis based on metabolite structural similarity, and network analysis based on metabolite abundance correlations were used to incorporate both metabolite levels and structural annotation. The greatest number of enriched pathways are observed at 3 days and the lowest at 30 days following radiation. Amino acid metabolism pathways, glutathione metabolism, and central carbon metabolism in cancer are enriched at all radiation time points across different analytical methods. This study suggests that glutathione and central carbon metabolism in cancer may be important pathways in the unresolved effect of radiation treatment.
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