Abstract:
OBJECTIVE:Dehydroepiandrosterone (DHEA) is a widely studied steroid hormone with multi-functional properties. Reports suggest that some of the many activities of DHEA are due to its protective effect against lipid peroxidation. Nevertheless, the antioxidant properties of DHEA are still the subject of debate. The aim was to evaluate whether its two opposed effects on lipid peroxidation reported in the literature may be dependent on schedule and doses used. METHODS:Chang liver cells, a line derived from normal human liver, were grown in media containing either no steroids (control) or DHEA at concentrations ranging from 0.1 micromol/l to 50 micromol/l. At specific times, cultures were halted and cells received a pro-oxidant stimulus (cumene (CuOOH) 0.5 mmol/l), at which time cell viability (by trypan blue staining and lactate dehydrogenase (LDH) release) and thiobarbituric acid reactive substances (TBARS) concentration (spectrophotometrical assay) were evaluated. RESULTS:At concentrations ranging from 0.1 micromol/l to 1 micromol/l, DHEA protects Chang liver cells against lipid peroxidation and/or death induced by cumene. This effect disappears if the concentration is increased to 10 micromol/l; at higher concentrations (50 micromol/l) a pro-oxidant/cytotoxic effect of DHEA appears. CONCLUSIONS:DHEA exhibits two opposed effects on lipid peroxidation; depending on its concentration it acts either to limit or to induce oxidative stress. The threshold concentration at which the pro-oxidant activity of DHEA prevails is not far in excess of that having an antioxidant effect. Either effect of DHEA on lipid peroxidation is only evident after a 'lag-phase'.
journal_name
Eur J Endocrinoljournal_title
European journal of endocrinologyauthors
Gallo M,Aragno M,Gatto V,Tamagno E,Brignardello E,Manti R,Danni O,Boccuzzi Gdoi
10.1530/eje.0.1410035subject
Has Abstractpub_date
1999-07-01 00:00:00pages
35-9issue
1eissn
0804-4643issn
1479-683Xpii
1410035journal_volume
141pub_type
杂志文章abstract:OBJECTIVES:Evidence of the association between vitamin D and cardiovascular risk factors in the young is limited. We therefore assessed the relationships between circulating 25-hydroxyvitamin D(3) (25(OH)D(3)) and metabolic syndrome (MetS), its components, and early atherosclerotic changes in 452 (304 overweight/obese ...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-11-0545
更新日期:2011-10-01 00:00:00
abstract::Surgery is the treatment of choice for non-functioning pituitary macroadenomas (NFPAs). In cases of postoperative remnant growth or tumor recurrence, radiotherapy (RT) can be considered. The role of RT in the postoperative management of NFPAs is still debated. The main arguments against routine use of RT are the lack ...
journal_title:European journal of endocrinology
pub_type: 杂志文章,评审
doi:10.1530/EJE-19-0058
更新日期:2019-07-01 00:00:00
abstract:OBJECTIVE:Inactivating mutations of the GH-releasing hormone receptor (GHRHR) gene (GHRHR) cause familial isolated GH deficiency (IGHD) type IB. The GH response to physical exercise (PE) in patients lacking GHRHR has never been studied. We hypothesized that subjects lacking functional GHRHR may be a model to study GH r...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1470591
更新日期:2002-11-01 00:00:00
abstract:CONTEXT:There is evidence to suggest that IGF-I plays a role in regulating bone turnover. OBJECTIVE:To evaluate the relationships between serum concentrations of IGF-I and IGF-binding protein-3 (IGFBP-3), and bone metabolism markers in healthy children. DESIGN AND SETTING:Prospective cross-sectional study. SUBJECTS ...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-07-0402
更新日期:2007-11-01 00:00:00
abstract::We here investigate the potential rescue of the relative hyposomatotropism of aging and obesity by 3-day pulsatile GHRH infusions (i.v. bolus 0.33 microg/kg every 90 min) in 19 healthy men of varying ages (18 to 66 years) and body compositions (12 to 37% total body fat). Baseline (control) and GHRH-driven pulsatile GH...
journal_title:European journal of endocrinology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1530/eje.0.1390059
更新日期:1998-07-01 00:00:00
abstract::Nitric oxide mediates a wide array of cellular functions in many tissues. It is generated by three known isoforms of nitric oxide synthases (NOS). Recently, the endothelial isoform, NOSIII, was shown to be abundantly expressed in the rat thyroid gland and its expression increased in goitrous glands. In this study, we ...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1360649
更新日期:1997-06-01 00:00:00
abstract::The identification and sequencing of the ob gene and its product, leptin, in 1994 opened new insights in the study of the mechanisms controlling body weight and led to a surge of research activity. Since its discovery, leptin has been the subject of an enormous amount of work especially within the fields of nutrition,...
journal_title:European journal of endocrinology
pub_type: 杂志文章,评审
doi:10.1530/eje.0.1490257
更新日期:2003-10-01 00:00:00
abstract::Autoimmune thyroid disease is the archetype for organ-specific autoimmune disorders. Progress in treating these disorders lies in improvements of our understanding of the predisposing factors responsible, the mechanisms responsible for progression of disease, and the interaction between thyroid antigens and the immune...
journal_title:European journal of endocrinology
pub_type: 杂志文章,评审
doi:10.1530/eje.0.1480001
更新日期:2003-01-01 00:00:00
abstract::Multiple endocrine neoplasia type 1 (MEN 1) is a familial syndrome characterized by parathyroid, enteropancreatic and pituitary tumors. The gene responsible for this syndrome is localized at chromosomal 11q13 region and DNA markers from this region cosegregate with the disease. The recent identification of the MEN1 ge...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1420131
更新日期:2000-02-01 00:00:00
abstract:OBJECTIVE:Very few previous studies have compared the degree of health-related quality of life (HRQL), depression and anxiety of differentiated thyroid cancer patients (DTC) under short-term hypothyroid-ism and levothyroxine treatment. METHODS:Using patient-completed instruments, we examined the frequency of physical ...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.1.02047
更新日期:2005-12-01 00:00:00
abstract:OBJECTIVE:Slow-release (SR) lanreotide is a long-acting somatostatin analog that has been developed in order to overcome the inconvenience of multiple daily subcutaneous injections of octreotide, required for metabolic control in acromegaly. Lanreotide SR has been found to be well tolerated and effective in reducing GH...
journal_title:European journal of endocrinology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1530/eje.0.1430577
更新日期:2000-11-01 00:00:00
abstract::Osteogenesis imperfecta (OI) is an inherited skeletal dysplasia characterized by bone fragility and skeletal deformities. While the majority of cases are associated with pathogenic variants in COL1A1 and COL1A2, the genes encoding type I collagen, up to 25% of cases are associated with other genes that function within...
journal_title:European journal of endocrinology
pub_type: 杂志文章,评审
doi:10.1530/EJE-20-0299
更新日期:2020-10-01 00:00:00
abstract:OBJECTIVE:11beta-Hydroxylase and aldosterone synthase are two highly homologous genes involved in different forms of human hypertension and in different animal models of hypertension. It has been shown that the conservative substitution D147E in the human CYP11B2 gene results in an increased production of corticosteron...
journal_title:European journal of endocrinology
pub_type: 临床试验,杂志文章
doi:10.1530/eje.0.1440397
更新日期:2001-04-01 00:00:00
abstract::The recent onslaught of mass spectrometry (MS) to measurements of steroid hormones, including demands that they should be the only acceptable method, has confused clinicians and scientists who have relied for more than 40 years on a variety of immunoassay (IA) methods in steroid hormone measurements. There is little d...
journal_title:European journal of endocrinology
pub_type: 杂志文章,评审
doi:10.1530/EJE-15-0338
更新日期:2015-08-01 00:00:00
abstract::Approximately 15 million babies are born preterm across the world every year, with less than 37 completed weeks of gestation. Survival rates increased during the last decades with the improvement of neonatal care. With premature birth, babies are deprived of the intense intrauterine growth phase, and postnatal growth ...
journal_title:European journal of endocrinology
pub_type: 杂志文章,评审
doi:10.1530/EJE-16-0482
更新日期:2017-03-01 00:00:00
abstract:OBJECTIVE:In the absence of widely available measures of determining free and/or bioavailable testosterone (BioT) physicians may use formulae such as the free androgen index (FAI) to estimate free testosterone. We compared the efficacy of calculated markers of androgen status in predicting serum BioT and hypogonadism. ...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1510241
更新日期:2004-08-01 00:00:00
abstract:OBJECTIVE:Vitamin D insufficiency is common in primary hyperparathyroidism (pHPT). Patients with pHPT frequently have a reduced health-related quality of life (HRQoL). Our objectives were to evaluate whether HRQoL in pHPT is associated with vitamin D insufficiency and whether vitamin D supplementation after parathyroid...
journal_title:European journal of endocrinology
pub_type: 杂志文章,随机对照试验
doi:10.1530/EJE-14-0757
更新日期:2015-02-01 00:00:00
abstract::The fast technological development, particularly single nucleotide polymorphism array, array-comparative genomic hybridization, and whole exome sequencing, has led to the discovery of many novel genetic causes of growth failure. In this review we discuss a selection of these, according to a diagnostic classification c...
journal_title:European journal of endocrinology
pub_type: 杂志文章,评审
doi:10.1530/EJE-15-0937
更新日期:2016-04-01 00:00:00
abstract::Fifty-five patients with adult-onset GH deficiency (mean age, 49 years) were enrolled in a placebo-controlled, crossover study to investigate the effects of GH therapy on exercise capacity, body composition, and quality of life (QOL). GH and placebo were administered for 9 months each, separated by a 4-month washout p...
journal_title:European journal of endocrinology
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1530/eje.1.01971
更新日期:2005-09-01 00:00:00
abstract:OBJECTIVE:Only a few studies have investigated variations of different markers for inflammatory processes during the physiological menstrual cycle. The results are conflicting, particularly concerning the correlation between the marker leptin and steroid hormones. The aim of the study was to investigate the inflammator...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.1.02178
更新日期:2006-07-01 00:00:00
abstract:OBJECTIVE:Short stature caused by point mutations or deletions of the short stature homeobox (SHOX) gene (SHOX haploinsufficiency (SHI)) is a registered indication for GH treatment. Patients with a SHOX enhancer deletion (SED) have a similar phenotype, but their response to GH is unknown. It is uncertain if duplication...
journal_title:European journal of endocrinology
pub_type: 杂志文章,多中心研究
doi:10.1530/EJE-15-0451
更新日期:2015-11-01 00:00:00
abstract:OBJECTIVE:Recent observational studies have established progression and recurrence rates of pituitary adenomas. However, it is still unknown how individual pituitary adenomas grow over years and whether growth kinetics follow a distinct growth model. The objective of this study was to define a growth model for non-func...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-07-0502
更新日期:2008-03-01 00:00:00
abstract:OBJECTIVE:To determine if functional imaging using 11C-methionine positron emission tomography co-registered with 3D gradient echo MRI (Met-PET/MRI), can identify sites of residual active tumour in treated acromegaly, and discriminate these from post-treatment change, to allow further targeted treatment. DESIGN/METHOD...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-16-0639
更新日期:2016-11-01 00:00:00
abstract::Descent of the testis from an intra-abdominal site in foetal life to an extracorporeal location after birth is a mandatory developmental process to ensure that the mature testis promotes normal spermatogenesis. The two phases of transabdominal and inguinoscrotal descent occur approximately during the first and last th...
journal_title:European journal of endocrinology
pub_type: 杂志文章,评审
doi:10.1530/EJE-08-0458
更新日期:2008-12-01 00:00:00
abstract:BACKGROUND:Lithium, clinically used in the treatment of bipolar disorders, is well known to induce thyroid growth. However, the mechanism involved is only incompletely characterized. Although it is conventionally believed that thyroid proliferation depends on the thyroid-stimulating hormone (TSH)/cAMP/cAMP response ele...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.1.02038
更新日期:2005-12-01 00:00:00
abstract::The reduced activity of the growth hormone (GH)-insulin-like growth factor I (IGF-I) axis in aging may contribute to changes in body composition. As this GH insufficiency is due to hypothalamic pathogenesis, the availability of GH-releasing peptides (GHRPs), such as GHRP-6 (His-D-Trp-Ala-Trp-D-Phe-Lys-NH2) which is ac...
journal_title:European journal of endocrinology
pub_type: 临床试验,杂志文章
doi:10.1530/eje.0.1310499
更新日期:1994-11-01 00:00:00
abstract:BACKGROUND:Epidemiological studies suggest that hypopituitary patients have an increased risk for cardiovascular mortality. The dyslipidaemia associated with this condition is often characterised by an increase in total cholesterol (TC) and low-density lipoprotein (LDL) cholesterol (LDL-C) and may contribute to these f...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.1.02105
更新日期:2006-03-01 00:00:00
abstract:OBJECTIVE:Although vascular mortality is increased in hypopituitary adults on routine replacement, there are limited data on the atherosclerotic process during life in these patients. Measurement of arterial stiffness may provide an index of early vascular changes that predispose to the development of major vascular ac...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1360157
更新日期:1997-02-01 00:00:00
abstract:OBJECTIVE:Klotho is a lifespan-influencing gene expressed mainly in the kidneys. Soluble α-Klotho (αKL) is released into the circulation. In this study, we present baseline αKL serum levels of patients with acromegaly compared with controls with other pituitary adenomas and assess changes following transsphenoidal surg...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-12-1045
更新日期:2013-03-15 00:00:00
abstract::Corticotrophin-releasing hormone (CRH) causes vasodilatation in the human fetal-placental circulation and has paracrine actions in placental tissue, suggesting that CRH receptors may be present in the human placenta. We have now identified and characterized placental CRH binding sites and compared them to those descri...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1330591
更新日期:1995-11-01 00:00:00