Abstract:
BACKGROUND:Pregnancy and lactation comprise a critical window spanning all seasons during which maternal vitamin D status potentially may influence the long-term health of the newborn. Women typically receive calcium/vitamin D supplementation through antenatal vitamins, but there has been limited serial evaluation of maternal vitamin D status across this critical window. DESIGN/PATIENTS/MEASUREMENTS:In this prospective observational cohort study, 467 women in Toronto, Canada, underwent measurement of serum 25-hydroxy vitamin D (25-OH-D) at mean 29·7 ± 2·9 weeks' gestation, 3 months postpartum and 12 months postpartum, enabling serial assessment across 3 seasons. At each assessment, vitamin D status was classified as deficiency (25-OH-D<50 nmol/l), insufficiency (25-OH-D≥50 nmol/l and <75 nmol/l) or sufficiency (25-OH-D≥75 nmol/l). RESULTS:The prevalence rates of vitamin D deficiency and insufficiency were 31·5% and 35·1% in pregnancy, 33·4% and 35·3% at 3 months, and 35·6% and 33·8% at 12 months postpartum, respectively. These high rates remained stable over time (P = 0·49) despite declining usage of antenatal calcium/vitamin D supplementation from pregnancy to 3 months to 12 months postpartum (P < 0·001). Indeed, on mixed model analyses, vitamin D deficiency and insufficiency in pregnancy were independently associated with decrements in average 25-OH-D over time of 49·6 nmol/l and 26·4 nmol/l, respectively (both P < 0·001). In contrast, season of baseline assessment and use of calcium/vitamin D supplements were independently associated with changes in 25-OH-D in the range of 3-5 nmol/l (both P < 0·008). CONCLUSIONS:The persistence of vitamin D deficiency/insufficiency during pregnancy and lactation, irrespective of season and supplementation, supports the emerging concept that current vitamin D supplementation in antenatal care is likely inadequate.
journal_name
Clin Endocrinol (Oxf)journal_title
Clinical endocrinologyauthors
Kramer CK,Ye C,Swaminathan B,Hanley AJ,Connelly PW,Sermer M,Zinman B,Retnakaran Rdoi
10.1111/cen.12989subject
Has Abstractpub_date
2016-05-01 00:00:00pages
680-6issue
5eissn
0300-0664issn
1365-2265journal_volume
84pub_type
杂志文章abstract:OBJECTIVE:To identify predictors of hypothalamic-pituitary-adrenal (HPA) axis recovery interval and severity of glucocorticoid withdrawal symptoms (GWS) in patients undergoing adrenalectomy for corticotropin-independent cortisol excess. DESIGN:This is a retrospective study of patients with mild autonomous cortisol exc...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.13803
更新日期:2018-12-01 00:00:00
abstract:OBJECTIVE:The increasing use in clinical practice of octreotide (a somatostatin analogue which inhibits the secretion of GH and other peptide hormones) led us to study the effects of this treatment on GH, insulin-like growth factors (IGF)-I and II and IGF-binding protein (IGFBP)-3, as well as on circulating IGFBP compl...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1995.tb01857.x
更新日期:1995-02-01 00:00:00
abstract:OBJECTIVE:Both severe growth hormone (GH) deficiency in hypopituitary adults and physiological ageing are associated with an increase in fat mass, dyslipidaemia, and an increased incidence of cardiovascular disease. Ageing is also associated with a physiological decrease in spontaneous as well as stimulated GH secretio...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.1999.00772.x
更新日期:1999-09-01 00:00:00
abstract:OBJECTIVE:Vascular dysfunction and accelerated atherosclerosis are prominent features of hypothyroidism. The relative roles of thyroid hormone (TH) deficiency and the associated vascular risk conditions are still unclear. We studied the impact of acute and chronic hypothyroidism on vascular reactivity. PATIENTS:We stu...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2009.03609.x
更新日期:2010-01-01 00:00:00
abstract:BACKGROUND:Hydrocortisone therapy should be individualized in congenital adrenal hyperplasia (CAH) patients to avoid over and under replacement. We have assessed how differences in absorption and half-life of cortisol influence glucocorticoid exposure. PATIENTS AND METHODS:Forty-eight patients (21 M) aged between 6·1 ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.12653
更新日期:2015-04-01 00:00:00
abstract::The identification of genes placing individuals at an increased risk for the development of autoimmune thyroid disease (AITD) has been a slow process. However, over the last 20 years or so real progress has been made with the mapping of novel loci, via a number of different approaches. First, through the use of tradit...
journal_title:Clinical endocrinology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2265.2007.03075.x
更新日期:2008-05-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Parathyroid hormone-related protein (PTHrP) produced by cancers has a central role as a humoral mediator of hypercalcaemia in patients with malignancy. Since the prevalences of hypercalcaemia of malignancy and parathyroid disease reflect the population studied, hypercalcaemic patients from a di...
journal_title:Clinical endocrinology
pub_type: 杂志文章,多中心研究
doi:10.1111/j.1365-2265.1994.tb02569.x
更新日期:1994-10-01 00:00:00
abstract:OBJECTIVE AND DESIGN:The resistance of macroprolactinomas to dopamine agonist (DA) therapy, whether defined as an absence of PRL normalization or the lack of significant tumour shrinkage after prolonged treatment at high doses, is usually regarded as unpredictable. The aim of this retrospective study, conducted in a te...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2006.02493.x
更新日期:2006-04-01 00:00:00
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journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2012.04497.x
更新日期:2013-02-01 00:00:00
abstract:OBJECTIVE:To study the effects of short (6 months) and longer-term (up to 24 months) growth hormone (GH) replacement therapy using a dose titration regimen, on lipid and glucose metabolism in GH-deficient, hypopituitary adults. DESIGN:On-going open study of GH treatment up to 24 months. Measurements were performed at ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2000.01108.x
更新日期:2000-10-01 00:00:00
abstract:OBJECTIVE:Recent studies have shown that Graves' disease (GD) is linked to and associated with alleles of the cytotoxic T lymphocyte antigen-4 (CTLA4) locus. However, the true pathogenic polymorphism(s) at this locus remains uncertain. Moreover, the association studies of the promoter CTLA4(-318)C/T polymorphism in whi...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2003.01778.x
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journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:
更新日期:2000-06-01 00:00:00
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journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.13430
更新日期:2017-12-01 00:00:00
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journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2002.01507.x
更新日期:2002-04-01 00:00:00
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journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1994.tb02485.x
更新日期:1994-04-01 00:00:00
abstract:BACKGROUND:A GH deficiency-like phenotype with normal or high hGH secretion, pathologically low IGF-I serum levels, and catch-up growth under treatment with recombinant hGH is suggestive of the presence of biologically inactive hGH syndrome, whose presumably heterogenous molecular basis is substantially unknown. DESIG...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.1999.00744.x
更新日期:1999-07-01 00:00:00
abstract:CONTEXT:Endothelial progenitor cells (EPCs) are bone marrow-derived cells required for endothelial repair. Circulating EPC concentration is low in conditions characterized by endothelial dysfunction but their number can be increased by treatment with phosphodiesterase-5 (PDE5) inhibitors. EPCs are also reduced in hypog...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2008.03507.x
更新日期:2009-09-01 00:00:00
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journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2011.04021.x
更新日期:2011-06-01 00:00:00
abstract::100 mg i.m. sulpiride (a dopamine-receptor-blocking drug) led to a significant rise in plasma TSH in normal womem, in female patients with galactorrhoea, and, to a much more marked degree, in male and female patients with primary hypothyroidism. In the hypothyroid patients, there was a significant positive correlation...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1978.tb03582.x
更新日期:1978-11-01 00:00:00
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journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2011.04011.x
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journal_title:Clinical endocrinology
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doi:10.1111/j.1365-2265.2008.03313.x
更新日期:2009-02-01 00:00:00
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journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2006.02573.x
更新日期:2006-08-01 00:00:00
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journal_title:Clinical endocrinology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1111/j.1365-2265.1988.tb01223.x
更新日期:1988-09-01 00:00:00
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journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.13322
更新日期:2017-06-01 00:00:00
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journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2011.04031.x
更新日期:2011-08-01 00:00:00
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journal_title:Clinical endocrinology
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doi:10.1111/j.1365-2265.1991.tb03495.x
更新日期:1991-07-01 00:00:00
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journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2007.02894.x
更新日期:2007-09-01 00:00:00
abstract:OBJECTIVES:An inverse relationship has been shown between body mass index (BMI) and the peak growth hormone (GH) response to stimulation in adults and in children with short stature. This relation is observed even within a normal range of BMI. The aim of this study was to investigate the effect of BMI on the GH respons...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2011.03988.x
更新日期:2011-06-01 00:00:00
abstract::This study was to examine indirectly the effect of endogenous progesterone, a known competitor for 5 alpha-reductase, on androgen metabolism in target organs in hirsute women. Serum levels of progesterone, testosterone (T), androstenedione (A), dihydrotestosterone (DHT) and 5 alpha-androstane 3 alpha 17 beta-diol (3 a...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1984.tb03225.x
更新日期:1984-10-01 00:00:00
abstract::The human population which lives and works in polar environments has been increasing steadily over the last 15 years. Very little is known about how these residents adjust to their environment. Cold adaptation in man is a poorly understood phenomenon. Euthermic mammals maintain body temperature during cold exposure vi...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1986.tb03595.x
更新日期:1986-07-01 00:00:00