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  • Title: Peptide hormones in saliva. I. Insulin in saliva during the oral glucose tolerance test in female patients.
    Author: Simionescu L, Aman E, Muşeţeanu P, Dinulescu E, Giurcăneanu M.
    Journal: Endocrinologie; 1985; 23(3):179-87. PubMed ID: 3901231.
    Abstract:
    The radioimmunoassay (RIA) of insulin was performed in the serum and saliva of 27 female patients during the oral glucose tolerance test (OGTT). The patients were divided into two groups: 19 non-diabetic patients and 8 patients diagnosed as impaired glucose tolerance (IGT) disease. In one patient in each group, the OGTT was performed twice at intervals of 3-5 days. The results show that immunoreactive insulin (IRI) is present in saliva and its concentration increases during the glucose stimulation test from 6.48 +/- 1.13 microU/ml (means +/- SEM) in basal conditions at peak values of 45.46 +/- 10.14 microU/ml at 2 hrs after glucose intake. In patients with IGT salivary IRI increases from 5.18 +/- 1.39 microU/ml in basal conditions to peak values of 83.34 +/- 25.85 microU/ml at 3 hrs after glucose administration. Great response variations were observed either inter-individual or intraindividual in both groups of patients. Some patients had unusual high salivary IRI concentration especially in those with gastrointestinal troubles. Further, some hypotheses and experimental models, are advanced, considered useful for the explanation of the physiologic significance of the salivary IRI or of the IRI-like material.
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