Bone Turnover Markers and Osteoprotegerin in Uncomplicated Pregnancy

Overview

Journal EJIFCC

Specialty Biochemistry

Date 2016 Sep 30

PMID 27683317

Authors

Hanna Styczynska

Kinga Lis

Izabela Sobanska

Agnieszka Pater

Joanna Pollak

Aneta Mankowska

Affiliations

Soon will be listed here.

Abstract

Although calcium metabolism during pregnancy is well described the mechanisms involved in bone metabolism are not quite clear. Increase of osteoprotegerin (OPG) with elevated bone turnover is supposed to be a homeostatic mechanism limiting bone loss. The aim of the study was to assess bone turnover in pregnancy in relation to serum osteoprotegerin level. Osteocalcin (OC), beta-crosslaps (CTx), OPG, vitamin 25 OH D3, parathormone (PTH), and calcium (Ca) were determined in 30 healthy women at 1(st) and at 3(rd) trimester of pregnancy and 27 healthy age-matched non pregnant women. In pregnant women average OPG, CTx and serum calcium concentrations were found to be highly elevated. During pregnancy OPG and bone resorption significantly rised whereas only slight increase in OC level was found with concomitant decrease in serum calcium. OPG correlated positively with OC and Ca only at 1(st) trimester. Serum CTx and OPG at 1(st) trimester seemed to be the only parameters to differentiate between elevated and normal bone turnover among pregnant women. In pregnancy bone turnover increases mainly due to enhanced bone resorption. The determination of osteocalcin at the beginning of pregnancy seems to be of limited clinical use, whereas measuring bone resorption markers such as CTx and/or osteoprotegerin may have a good predictive value for later pregnancy-associated bone loss.

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