Unstimulated whole saliva parathyroid hormone in postmenopausal women with xerostomia.

OBJECTIVE The aim of this study was to evaluate the correlation of xerostomia severity with unstimulated saliva parathyroid hormone (PTH) and to compare unstimulated whole saliva PTH between postmenopausal women with/without xerostomia. METHODS A case-control study was carried out in 60 (30 as case and 30 as control) selected postmenopausal women with/ without xerostomia conducted at the Clinic of Oral Medicine, Tehran University of Medical Sciences. Xerostomia inventory (XI) score was also used as an index of xerostomia severity. PTH concentration was analyzed by enzyme-linked immunosorbent assay (ELISA). Statistical analysis of Student's t-test and Spearman correlation was used. RESULTS The mean unstimulated saliva PTH concentration was significantly higher but flow rate was lower in the case group compared with control. XI score correlated significantly with saliva PTH (r = 0.688, p = 0.001) and flow rate (r = - 0.529, p = 0.001). CONCLUSION Xerostomia severity correlated positively with unstimulated whole saliva PTH and negatively with saliva flow rate in this group of postmenopausal women. Thus, salivary flow rate and PTH levels appear associated with xerostomia and menopause. CLINICAL SIGNIFICANCE Salivary PTH level appears to be associated with xerostomia and menopause.

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