Abstract:
:Patients with Cushing syndrome have elevated 24 h urinary free cortisol excretion and loss of diurnal rhythm of plasma cortisol, however, morning total plasma cortisol concentrations are often similar to those of normal individuals. To test the hypothesis that an elevated morning plasma free cortisol could distinguish patients with Cushing syndrome from those without the disorder, we measured plasma free cortisol levels at 08:00 in 20 patients with surgically-confirmed mild Cushing syndrome, 19 patients with pseudo-Cushing states, and 9 normal volunteers. We then determined the sensitivity, specificity and diagnostic accuracy of plasma free cortisol for the diagnosis of hypercortisolism and for the diagnosis of Cushing syndrome. Plasma free cortisol was compared to 08:00 total plasma cortisol and to basal 24 hour urinary free cortisol. Morning plasma free cortisol was significantly elevated in patients with mild Cushing syndrome (58 +/- 6 nmol/L; mean +/- SE) compared to plasma free cortisol in patients with pseudo-Cushing states (36 +/- 6 nmol/L) (p < 0.005) and normal volunteers (22 +/- 4 nmol/L) (p < 0.0005). Total morning cortisol was significantly greater in patients with mild Cushing syndrome (470 +/- 28 nmol/L) than in normal volunteers (310 +/- 33 nmol/L, p < 0.05) but was not different from patients with pseudo-Cushing states (410 +/- 47 nmol/L, p = NS). Urinary free cortisol was also significantly greater in mild Cushing syndrome (540 +/- 50 nmol/d) than in patients with pseudo-Cushing states (430 +/- 41 nmol/d, p < 0.05) or normal volunteers (160 +/- 28 nmol/d, p < 0.0001). However, there was considerable overlap of plasma free cortisol, plasma total cortisol and urinary free cortisol between the three groups precluding these tests alone from being useful to distinguish patients with mild Cushing syndrome from patients with pseudo-Cushing states. To achieve 100% sensitivity for the diagnosis of Cushing syndrome, the specificity for plasma free cortisol, plasma total cortisol and urinary free cortisol was 0.11, 0.32 and 0.32, respectively. We conclude that plasma free cortisol is of limited value in the differential diagnosis of hypercortisolism.
journal_name
J Endocrinol Investjournal_title
Journal of endocrinological investigationauthors
Friedman TC,Yanovski JAdoi
10.1007/BF03349791subject
Has Abstractpub_date
1995-10-01 00:00:00pages
696-701issue
9eissn
0391-4097issn
1720-8386journal_volume
18pub_type
临床试验,杂志文章abstract:BACKGROUND:Adiponectin, a fat derived cytokine, is a potential independent contributor to bone mineral density (BMD); however, its action on bone metabolism in humans is still unclear. AIM:The aim of this study was to investigate the relationship of adiponectin with bone mass indices and bone metabolic markers in midd...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.3275/7744
更新日期:2012-03-01 00:00:00
abstract::The genetic factors determining bone mineral density (BMD) are not well characterized. Many studies have investigated the relationship between the fokI polymorphism of vitamin D receptor (VDR) gene in diverse populations and gender, resulting in conflicting outcomes. Because peak bone mass in men is closely related to...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347571
更新日期:2005-10-01 00:00:00
abstract::D-aspartic acid (D-Asp), aromatase enzyme activity and the putative D-Asp involvement on aromatase induction have been studied in the testis of mature boars. The peroxidase-antiperoxidase and the indirect immunofluorescence methods, applied to cryostat and paraffin sections, were used to evaluate D-Asp and aromatase d...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03344087
更新日期:2006-02-01 00:00:00
abstract::Thyroid-stimulating antibody (TSAb) activity and the TSH-binding inhibitory immunoglobulin (TBII) index were assessed in 158 patients with Graves' disease who had been treated with 131I 6-14 years earlier. Twenty-one patients (13%) were still hyperthyroid, 45 (28%) were euthyroid, 44 (28%) were subclinically hypothyro...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03349039
更新日期:1996-11-01 00:00:00
abstract::Up to now, the diagnosis of silent corticotroph cell pituitary adenomas has been made only on histopathological basis. In this paper we describe 6 women affected with pituitary adenomas, without evident clinical features of hypercortisolism, in whom retrospective data suggested the possibility of clinically diagnosing...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348769
更新日期:1992-06-01 00:00:00
abstract::Isolated hypothyroxinemia (IH) is defined as a thyroxine level in the lower 5th (severe IH) or 10th percentile (mild IH) of the pregnancy-related reference range and a normal TSH. The etiology of IH remains unknown. This review aims to evaluate the biochemical criteria used to define IH in different published studies ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.1007/s40618-014-0203-5
更新日期:2015-02-01 00:00:00
abstract:AIM:Adult subjects with Prader-Willi syndrome (PWS) may show several conditions that are associated with an activation of innate immunity such as obesity, deficient GH secretion or hypogonadism. Our aim was to study whether obese adult PWS subjects show an additional low-grade systemic inflammation (LGSI) in relation t...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03345585
更新日期:2008-02-01 00:00:00
abstract::Non-classical congenital adrenal hyperplasia (NCAH) is a morbid condition sustained by the reduced function of one of the enzymes involved in the adrenal steroid biosynthesis pathway, mainly the 21-hydroxylase. Different degrees of enzyme activity impairment determine different clinical pictures, with childhood or pos...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.3275/7410
更新日期:2011-10-01 00:00:00
abstract::The present experiments were undertaken to study the effect of complete food removal on body weight, pituitary growth hormone (GH), plasma GH and glucose concentration in male and female Wistar rats. Plasma and pituitary GH levels were measured by means of a specific radioimmunoassay. Plasma glucose concentration decr...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03349417
更新日期:1981-01-01 00:00:00
abstract::The research suggests that adiponectin plays an important role in sensitizing insulin action. It is interesting to find that the lower levels of adiponectin exist in the plasma of obese and Type 2 diabetes subjects and in the adipose tissue of obese, db/db mice, and insulin-resistant individuals. However, the underlyi...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03346688
更新日期:2011-01-01 00:00:00
abstract::Several cases of sporadic primary hyperparathyroidism in association with fibrous dysplasia of the bone have been reported in the English literature. Since fibrous dysplasia is a major feature and hyperparathyroidism is occasionally found in the McCune-Albright syndrome, we hypothesized that such cases may represent a...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348018
更新日期:1997-10-01 00:00:00
abstract::This study was performed to evaluate the antihypercalciuric effect of calcitonin (CT), a potent inhibitor of bone osteoclastic activity, on idiopathic hypercalciuria (IH). Forty-two stone formers were studied: 18 suffered from fasting hypercalciuria (FH), 12 from nonfasting hypercalciuria (NFH) and 12 were normocalciu...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350171
更新日期:1988-07-01 00:00:00
abstract:BACKGROUND:Obesity represents a global public health problem due to its association with cardiovascular diseases and reduced lifespan. The most widely used classification of obesity is expressed as Body Mass Index (BMI); however, this formula is an imprecise adiposity measurement that ignores several important factors ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-013-0048-3
更新日期:2014-06-01 00:00:00
abstract:BACKGROUND:Serum DHEAS has been found to be elevated in some women with polycystic ovary syndrome (PCOS). We wished to determine whether this prevalence is different in women with androgen excess who have different phenotypes and to correlate these findings with various cardiovascular and metabolic parameters. METHODS...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347408
更新日期:2007-02-01 00:00:00
abstract::It has recently been suggested that the classical routine of glucocorticoid administration before and after transsphenoidal surgery (TSS) in Cushing's disease (CD) patients may not be necessary, since it is likely that peritumoral normal corticotrophs are not completely suppressed during this period. We compared the d...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347237
更新日期:2005-06-01 00:00:00
abstract::The effect of an oral dose of 200 or 400 mg sodium valproate (DPA) on ACTH and cortisol secretion was assessed in 11 patients with Cushing's disease (3 bilaterally adrenalectomized), 3 patients with Nelson's syndrome and 6 patients with Addison's disease. In none of the patients examined DPA induced changes in ACTH (a...
journal_title:Journal of endocrinological investigation
pub_type: 临床试验,杂志文章
doi:10.1007/BF03348396
更新日期:1984-04-01 00:00:00
abstract::We report an original application of quantitative reverse transcription-polymerase chain reaction (Q.RT-PCR) for the evaluation of atrial natriuretic factor (ANF), brain natriuretic peptide (BNP) and beta-actin mRNA in small atrial samples (10-15 mg). A fixed amount of total RNA was simultaneously reverse transcribed ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03343655
更新日期:1999-12-01 00:00:00
abstract:BACKGROUND:Vitamin D exerts pleiotropic effects and few studies are available in the Italian population. AIM:Aim of our study was to evaluate vitamin D status in children living in Northern Italy. METHODS:We studied vitamin D levels in a population of 113 normal weight (NW) and 444 obese (OB) children, prepubertal an...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-014-0108-3
更新日期:2014-09-01 00:00:00
abstract:UNLABELLED:The aim of this study was to assess the behaviour of insulin sensitivity and insulin resistance (IR) indexes in a group of obese adolescents with Type 2 diabetes mellitus (T2DM) in comparison to obese adolescents without diabetes and normal controls, moreover to compare these parameters with the cardiac auto...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03346644
更新日期:2010-09-01 00:00:00
abstract::This report describes the results of the second part of the collaborative study organized by a working group sponsored by the Community Bureau of Reference of the European Community Commission. The whole study was designed to understand the causes of discrepancy among LH immunoassay methods. In the parent report we de...
journal_title:Journal of endocrinological investigation
pub_type: 临床试验,杂志文章
doi:10.1007/BF03347727
更新日期:1994-06-01 00:00:00
abstract::Microvessel density (MVD) represents a measure of angiogenesis and may be used as an indicator of neoplastic aggressiveness. Vascular endothelial growth factor (VEGF) plays a pivotal role as angiogenic promoter by stimulating endothelial cell proliferation and migration and enhancing vascular permeability. The aim of ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03345118
更新日期:2003-01-01 00:00:00
abstract::Here we describe a subject with congenital adrenal hyperplasia due to 21-hydroxylase deficiency (21-CAH), in its classical virilizing form, who presented at birth ambiguous genitalia and subsequently was assigned by the parents as male. At the age of 8 years, he underwent a two-step surgical correction of hypospadia a...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03343729
更新日期:2000-05-01 00:00:00
abstract::Abnormal nutritional status is an increasingly common complication in developed countries and, as reproductive age women are a part of this trend, the effect of maternal obesity on the pregnancy and neonate must be investigated. Pregestational obesity or overweight condition or an excessive gestational weight gain can...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.1007/s40618-014-0058-9
更新日期:2014-04-01 00:00:00
abstract::In mature female rats the administration of testosterone led to a striking reduction of hepatic alcohol dehydrogenase activity, whereas the hepatic microsomal ethanol oxidizing system as well as catalase were both increased in activity under these experimental conditions. Conversely, estradiol left the activities of a...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348330
更新日期:1982-07-01 00:00:00
abstract:UNLABELLED:ABSTRACT. Several data show that meal intake and nutritional status regulate circulating ghrelin concentrations in humans. Ghrelin mainly circulates in two different forms: octanoyl and des-octanoyl ghrelin. Most circulating ghrelin is des-octanoyl ghrelin which is considered inactive because it lacks endocr...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:
更新日期:2004-05-01 00:00:00
abstract::The case is described of a woman with a Verner-Morrison syndrome of extreme severity, caused by an occult VIPoma. Administration of SMS 201-995 (Sandoz) (SMS) at the dose of 150 and subsequently of 250 micrograms daily, decreased plasma levels of vasoactive intestinal polypeptide (VIP) from about 500 to 100 pg/ml (hig...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347894
更新日期:1991-09-01 00:00:00
abstract::Two radioimmunological techniques for the measurement of anti-alpha-galactosyl (anti-Gal) antibodies were developed and we demonstrated that this antibody is present in the serum of most untreated patients with Graves' disease, thyroid-associated ophthalmopathy (TAO) and autoimmune thyroiditis. Thyrotropin-binding inh...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03349806
更新日期:1995-11-01 00:00:00
abstract:PURPOSE:Hypercortisolism has detrimental effects on bone metabolism with the consequences of bone loss and bone fractures. We aimed to evaluate the frequency of vertebral fragility fractures and to determine the factors associated with Cushing's syndrome (CS). METHODS:A total of 135 patients diagnosed with Cushing's s...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-020-01496-y
更新日期:2021-01-09 00:00:00
abstract::The effects of graded infusions of atrial natriuretic peptide (ANP) on hemodynamics, renal function, plasma renin activity (PRA) and plasma arginine vasopressin (AVP) were investigated in a two part study in 6 volunteers. Three 30-min iv infusions of either saline control or ANP at graded rates of 4, 10 and 40 pmol kg...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350091
更新日期:1988-01-01 00:00:00
abstract::The coexistence of hyperparathyroidism complicating thyrotoxicosis is quite rare. We report the case of one patient who presented with thyrotoxicosis, (total thyroxine of 15.1 micrograms/dl (5-13), free thyroxine index of 18 (4-15) and triiodothyronine by RIA of 305 ng/dl (70-230) and asymptomatic hypercalcemia of 15 ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.1007/BF03346819
更新日期:1991-04-01 00:00:00