Premium
Bone turnover markers are associated with the PTH levels in different subtypes of pseudohypoparathyroidism type 1 patients
Author(s) -
Duan Xiaoye,
Yang Yi,
Wang Ou,
Nie Min,
Chu Xueying,
Quan Tingting,
Guan Wenmin,
Jiang Yan,
Li Mei,
Xia Weibo,
Xing Xiaoping
Publication year - 2021
Publication title -
clinical endocrinology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.055
H-Index - 147
eISSN - 1365-2265
pISSN - 0300-0664
DOI - 10.1111/cen.14496
Subject(s) - medicine , endocrinology , parathyroid hormone , pseudohypoparathyroidism , bone remodeling , n terminal telopeptide , hypoparathyroidism , alkaline phosphatase , type i collagen , calcium , biology , osteocalcin , enzyme , biochemistry
Objective Bone responsiveness to parathyroid hormone (PTH) in different subtypes of pseudohypoparathyroidism type 1 (PHP1) remains controversial. We aimed to investigate this phenomenon using bone turnover markers (BTMs) in a large cohort of PHP1 patients. Design Retrospective study. Patients Sixty‐three PHP1 patients diagnosed by molecular analysis were used as subjects, and 48 sex‐ and age‐matched patients with nonsurgical hypoparathyroidism (NS‐HP) were used for comparison. Measurements Bone turnover markers, alkaline phosphatase (ALP), C‐terminal telopeptide of type I collagen (β‐CTX) and related parameters in PHP1 were compared among different subtypes and with NS‐HP. Results Among all the PHP1 patients (15 PHP1A, 14 familial 1B and 34 sporadic 1B), 23.8% had elevated baseline BTM levels. No significant difference was found in the β‐CTX levels among different subtypes. The β‐CTX level was positively correlated with the PTH level for all PHP1, PHP1B and PHP1A patients (B = 0.001, 0.001 and 0.004, respectively; all p < .05). The BTM levels of PHP1 patients were significantly higher than those of NS‐HP patients (β‐CTX: 0.56 ng/ml vs. 0.20 ng/ml, p = .001; ALP: 105 U/L vs. 72 U/L, p = .001). The serum β‐CTX levels in different PHP1 subtypes were all significantly higher than those in NS‐HP patients in adults. Among the 22 followed up patients, changes in BTMs were associated with changes in PTH (β‐CTX: r = .507, p = .023; ALP: r = .475, p = .034). Conclusions Bone tissues respond to PTH in different PHP1 subtypes, and it is reasonable to monitor and normalize PTH and BTMs in addition to the serum and urinary calcium levels in the follow‐up of PHP1 patients.