Peer-reviewed veterinary case report
Detecting inflamed dog gums using aminolevulinic acid fluorescence
By Vaidyanathan, Vijay & Fossum, Theresa W·Published in Journal of biomedical optics·2004·University of North Texas, United States·View original on PubMed →
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Original publication title: Comparison of aminolevulinic-acid-induced fluorescence from normal and inflamed gingiva in the canine model.
- Species:
- dog
Plain-English summary
A group of five dogs with gingivitis (inflammation of the gums) underwent a test using a special dye called aminolevulinic acid (ALA) to see if it could help detect early signs of oral cancer. After receiving the dye, four of the dogs showed a stronger and quicker fluorescence from the inflamed gum areas compared to their normal gums. This suggests that ALA could be a useful tool for veterinarians to identify oral cancer earlier in dogs with gum disease. The study indicates that this method could improve the chances of catching oral cancer in its early stages, which is crucial for effective treatment.
People also search for: dog gingivitis treatment · oral cancer in dogs · ALA for dog gum disease · dog dental health signs
Abstract
Fluorescence spectroscopic detection using 5-amino levulinic acid (ALA) may provide an effective, noninvasive approach for early detection of oral cancer. In the present study, the use of ALA-induced fluorescence ratio (red/orange) to differentiate between normal and gingivitis-affected gingiva is investigated. Five dogs with varying degrees of gingivitis are studied. Based on previous studies, a dose of 25 mg/kg of ALA is administered intravenously to the dogs. Autofluorescence and ALA-induced fluorescence from three sites: normal gingiva, pigmented gingiva, and gingivitis, are detected with a fiber optic probe coupled to an optical multichannel analyzer. Four dogs show higher and earlier ALA-induced fluorescence from the gingivitis site as compared to the unpigmented gingiva. In two dogs, ALA-induced fluorescence peaks are seen 15 min after ALA administration. Statistical analysis using mean separation procedures reveal differences in the fluorescence from the various sites in each dog. Using a fluorescence (ratio) cutoff of 1.5, the sensitivity and specificity are found to be 92 and 80%, respectively, 1 h after administration of ALA. The indications from this study-that the characteristic protoporphyrin IX (PpIX) fluorescence is seen earlier and in higher magnitude in more vascular areas of the oral cavity-has implications for oral cancer diagnosis.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/15447014/