PURPOSE: This study utilized comprehensive salivary analysis to evaluate biochemical and immunological parameters in the saliva of oral squamous cell carcinoma (OSCC) patients. METHODS: Whole saliva was collected from 25 otherwise healthy OSCC patients and compared to 25 healthy, age- and gender-matched individuals. All OSCC lesions were located at the lateral aspect of the mobile tongue. The salivary parameters analyzed included: sodium (Na), potassium (K), calcium (Ca), inorganic phosphate (P), magnesium (Mg), total protein (TP), albumin (Alb), lactate dehydrogenase (LDH), amylase (Amy), total immunoglobulin G (IgG), secretory immunoglobulin A (Sec. IgA), epidermal growth factor, insulin growth factor I (IGF-I) and metalloproteinases MMP-2 and MMP-9. RESULTS: In cancer patients, salivary median total protein concentration was significantly higher by 26% (P = 0.01), as were concentrations of Na, Ca, P and Mg by 14% (P = 0.05), 59% (P = 0.05), 39% (P = 0.08) and 28% (P = 0.12), respectively. Amy and K concentrations were lower by 25% (P = 0.12) and 15% (P = 0.03), respectively. Alb was 108% higher (P = 0.0007), as were salivary LDH (88%, P = 0.002) and total IgG (125%, P = 0.01), while Sec. IgA was lower by 45% (P = 0.001). Concentrations of IGF, MMP-2 and MMP-9 were significantly higher by 117% (P = 0.03), 75% (P = 0.0003) and 35% (P = 0.05), respectively. CONCLUSIONS: Comprehensive salivary analysis revealed an overall altered salivary composition in OSCC, indicating a compromised oral environment in these patients and suggesting salivary analysis as a new diagnostic tool for oral cancer. Local therapeutic agents can be easily applied to the oral mucosa, altering its "bathing medium"-the saliva.
PURPOSE: This study utilized comprehensive salivary analysis to evaluate biochemical and immunological parameters in the saliva of oral squamous cell carcinoma (OSCC) patients. METHODS: Whole saliva was collected from 25 otherwise healthy OSCC patients and compared to 25 healthy, age- and gender-matched individuals. All OSCC lesions were located at the lateral aspect of the mobile tongue. The salivary parameters analyzed included: sodium (Na), potassium (K), calcium (Ca), inorganic phosphate (P), magnesium (Mg), total protein (TP), albumin (Alb), lactate dehydrogenase (LDH), amylase (Amy), total immunoglobulin G (IgG), secretory immunoglobulin A (Sec. IgA), epidermal growth factor, insulin growth factor I (IGF-I) and metalloproteinases MMP-2 and MMP-9. RESULTS: In cancerpatients, salivary median total protein concentration was significantly higher by 26% (P = 0.01), as were concentrations of Na, Ca, P and Mg by 14% (P = 0.05), 59% (P = 0.05), 39% (P = 0.08) and 28% (P = 0.12), respectively. Amy and K concentrations were lower by 25% (P = 0.12) and 15% (P = 0.03), respectively. Alb was 108% higher (P = 0.0007), as were salivary LDH (88%, P = 0.002) and total IgG (125%, P = 0.01), while Sec. IgA was lower by 45% (P = 0.001). Concentrations of IGF, MMP-2 and MMP-9 were significantly higher by 117% (P = 0.03), 75% (P = 0.0003) and 35% (P = 0.05), respectively. CONCLUSIONS: Comprehensive salivary analysis revealed an overall altered salivary composition in OSCC, indicating a compromised oral environment in these patients and suggesting salivary analysis as a new diagnostic tool for oral cancer. Local therapeutic agents can be easily applied to the oral mucosa, altering its "bathing medium"-the saliva.
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