Endocrine · 2020
Serum Klotho levels in primary hyperparathyroidism patients before and after parathyroidectomy.
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Su Chi, Meng Lingqiong, Trooskin Stanley Z, Shapses Sue A, He Yuling, Al-Dayyeni Aseel, Wang Xiangbing
Аннотация
PURPOSE: To investigate Klotho level and its association with biochemical indices of primary hyperparathyroidism (PHPT).
METHODS: Fifty PHPT patients and fifty-two age- and body mass index-(BMI) matched healthy control subjects were recruited. In addition, twenty-five PHPT patients underwent parathyroidectomy (PTX) and had 4-month follow-up visits. Intact parathyroid hormone (iPTH), 25-hydroxyvitamin D [25(OH)D], calcium, albumin, corrected calcium, and Klotho levels were determined.
RESULTS: There was no significant difference in age and BMI between PHPT subjects and controls (p > 0.05). PHPT patients had Klotho levels (15.4 ± 1.2 ng/mL) about 23% higher compared with those of the controls (11.9 ± 0.8 ng/mL), but this difference was not significant (p = 0.063). However, postmenopausal PHPT patients had 45% higher Klotho levels (17.6 ± 1.5 ng/ml) compared with postmenopausal controls (12.1 ± 0.9 ng/mL, p = 0.008). For postmenopausal subjects, Klotho levels had positive correlation with levels of iPTH (r = 0.25, p = 0.026) and corrected calcium (r = 0.34, p = 0.003), but negative correlation with 25(OH)D (r = -0.23, p = 0.042). After PTX, levels of iPTH and corrected calcium decreased and 25(OH)D levels increased to normal range (p < 0.001). However, there was no significant change in Klotho levels after a 4-month follow-up.
CONCLUSIONS: Serum Klotho levels are higher in postmenopausal PHPT patients than in healthy postmenopausal control subjects. The etiology of elevated Klotho level and its clinical significance requires further investigation.
METHODS: Fifty PHPT patients and fifty-two age- and body mass index-(BMI) matched healthy control subjects were recruited. In addition, twenty-five PHPT patients underwent parathyroidectomy (PTX) and had 4-month follow-up visits. Intact parathyroid hormone (iPTH), 25-hydroxyvitamin D [25(OH)D], calcium, albumin, corrected calcium, and Klotho levels were determined.
RESULTS: There was no significant difference in age and BMI between PHPT subjects and controls (p > 0.05). PHPT patients had Klotho levels (15.4 ± 1.2 ng/mL) about 23% higher compared with those of the controls (11.9 ± 0.8 ng/mL), but this difference was not significant (p = 0.063). However, postmenopausal PHPT patients had 45% higher Klotho levels (17.6 ± 1.5 ng/ml) compared with postmenopausal controls (12.1 ± 0.9 ng/mL, p = 0.008). For postmenopausal subjects, Klotho levels had positive correlation with levels of iPTH (r = 0.25, p = 0.026) and corrected calcium (r = 0.34, p = 0.003), but negative correlation with 25(OH)D (r = -0.23, p = 0.042). After PTX, levels of iPTH and corrected calcium decreased and 25(OH)D levels increased to normal range (p < 0.001). However, there was no significant change in Klotho levels after a 4-month follow-up.
CONCLUSIONS: Serum Klotho levels are higher in postmenopausal PHPT patients than in healthy postmenopausal control subjects. The etiology of elevated Klotho level and its clinical significance requires further investigation.