PMID- 7921225 OWN - NLM STAT- MEDLINE DCOM- 19941115 LR - 20190904 IS - 0804-4643 (Print) IS - 0804-4643 (Linking) VI - 131 IP - 4 DP - 1994 Oct TI - Changes in calciotrophic hormones and biochemical markers of bone turnover in normal human pregnancy. PG - 369-74 AB - Plasma concentrations of parathyroid hormone-related protein (PTHrP), parathyroid hormone, alkaline phosphatase, osteocalcin and albumin-adjusted calcium were measured along with nephrogenous cyclic adenosine monophosphate (NcAMP) in 10 normal women longitudinally through pregnancy. In addition, an assessment of bone resorption was made in these same subjects by the measurement in true fasting urine specimens of the calcium/creatinine ratio (Ca/Cr), hydroxyproline/creatinine ratio (HP/Cr), pyridinoline/creatinine ratio (Pyr/Cr) and deoxypyridinoline/creatine ratio (Dpyr/Cr). The PTHrP level rose through pregnancy from (mean +/- SEM) 0.8 +/- 0.2 pmol/l in the first trimester to 2.7 +/- 0.2 pmol/l 6 weeks postpartum (p < 0.0001). Serum alkaline phosphatase rose from 94 +/- 8 U/l (first trimester) to 347 +/- 25 U/l at term (p < 0.0001). A significant positive correlation was evident between PTHrP and alkaline phosphatase up to term (r = 0.44, p < 0.005). Parathyroid hormone concentrations remained unchanged during pregnancy but rose significantly postpartum from 1.8 +/- 0.2 pmol/l (first trimester) to 3.1 +/- 0.5 pmol/l (p < 0.0001). Similarly, osteocalcin, a marker of bone formative activity, remained unchanged through pregnancy but rose significantly at 6 weeks after delivery to 0.38 +/- 0.05 nmol/l from 0.19 +/- 0.03 nmol/l (first trimester) (p = 0.019). No significant change was noted in serum-adjusted calcium or NcAMP, either through pregnancy or at the postpartum assessment. Fasting urinary Ca/Cr fell through pregnancy from 0.70 +/- 0.11 (first trimester) to a nadir of 0.19 +/- 0.04 6 weeks postpartum (p = 0.007).(ABSTRACT TRUNCATED AT 250 WORDS) FAU - Gallacher, S J AU - Gallacher SJ AD - University Department of Medicine and Institute of Biochemistry, Glasgow Royal Infirmary, UK. FAU - Fraser, W D AU - Fraser WD FAU - Owens, O J AU - Owens OJ FAU - Dryburgh, F J AU - Dryburgh FJ FAU - Logue, F C AU - Logue FC FAU - Jenkins, A AU - Jenkins A FAU - Kennedy, J AU - Kennedy J FAU - Boyle, I T AU - Boyle IT LA - eng PT - Journal Article PL - England TA - Eur J Endocrinol JT - European journal of endocrinology JID - 9423848 RN - 0 (Amino Acids) RN - 0 (PTHLH protein, human) RN - 0 (Parathyroid Hormone) RN - 0 (Parathyroid Hormone-Related Protein) RN - 0 (Proteins) RN - 104982-03-8 (Osteocalcin) RN - 63800-01-1 (pyridinoline) RN - 90032-33-0 (deoxypyridinoline) RN - 9007-34-5 (Collagen) RN - AYI8EX34EU (Creatinine) RN - EC 3.1.3.1 (Alkaline Phosphatase) RN - SY7Q814VUP (Calcium) SB - IM MH - Adolescent MH - Adult MH - Alkaline Phosphatase/*blood MH - Amino Acids/blood/urine MH - Bone Resorption/urine MH - Bone and Bones/*metabolism MH - Calcium/*blood/urine MH - Collagen/urine MH - Creatinine/urine MH - Female MH - Humans MH - Osteocalcin/*blood MH - Parathyroid Hormone/*blood MH - Parathyroid Hormone-Related Protein MH - Pregnancy/*blood/*metabolism/urine MH - Proteins/*analysis EDAT- 1994/10/01 00:00 MHDA- 1994/10/01 00:01 CRDT- 1994/10/01 00:00 PHST- 1994/10/01 00:00 [pubmed] PHST- 1994/10/01 00:01 [medline] PHST- 1994/10/01 00:00 [entrez] AID - 10.1530/eje.0.1310369 [doi] PST - ppublish SO - Eur J Endocrinol. 1994 Oct;131(4):369-74. doi: 10.1530/eje.0.1310369.