Abstract:
:Whether leptin levels are related to insulin sensitivity or subject to acute regulation by insulin is not known. In 12 obese [body mass index (BMI) = 34.0 +/- 1.5 kg m-2] and 12 lean (BMI = 22.2 +/- 0.6 kg m-2) non-diabetic subjects, plasma leptin concentrations were measured in the fasting state and during 2 hours of euglycaemic hyperinsulinaemia (approximately 600 pmol L-1). Fasting plasma leptin was significantly higher in obese (26.6 +/- 3.2) than in lean subjects (6.4 +/- 1.2 ng mL-1, P = 0.0001), and in women (21.1 +/- 3.3) than in men (7.3 +/- 2.3 ng mL-1, P = 0.01). In univariate analysis, fasting plasma leptin was strongly related to all anthropometric measures (body weight, fat mass, percent fat mass, waist and hip circumferences). In multiple regression, per cent adiposity, hip circumference and duration of obesity explained 90% of the variability in fasting leptin concentrations. Fasting and stimulated (OGTT) insulin levels, insulin sensitivity (22.6 +/- 1.9 vs 36.7 +/- 2.0 mumol min-1 kg-1 in lean and obese subjects, respectively, P < 0.0001), glucose area, and serum triglycerides were positively related to fasting plasma leptin concentrations; none of these associations, however, was statistically significant after adjusting for BMI. During the clamp, plasma leptin concentrations remained constant in both lean and obese subjects. We conclude that neither insulin levels nor sensitivity relate to leptin levels independently of fat mass, and that leptin is not subject to acute (2 hours) regulation by insulin in lean or obese humans.
journal_name
Eur J Clin Investjournal_title
European journal of clinical investigationauthors
Muscelli E,Camastra S,Masoni A,Baldi S,Sironi AM,Natali A,Ferrannini Edoi
10.1111/j.1365-2362.1996.tb02142.xsubject
Has Abstractpub_date
1996-10-01 00:00:00pages
940-3issue
10eissn
0014-2972issn
1365-2362journal_volume
26pub_type
杂志文章abstract:BACKGROUND:The mechanisms responsible for the progressive failure of hypoglycaemia counterregulation in long-standing type 1 diabetes are poorly understood. Increased brain glucose uptake during hypoglycaemia or alterations of brain energy metabolism could effect glucose sensing by the brain and thus contribute to hypo...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.2006.01615.x
更新日期:2006-03-01 00:00:00
abstract:BACKGROUND:Chronic hyperglycaemia in diabetes is suggested to be a major cause of diabetic angiopathy. Up until now, the effects of acutely induced hyperglycaemia in non-diabetic subjects as well as hyperglycaemic effects in early diabetes, on mesenteric microcirculation and leucocyte endothelial cell interaction have ...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1046/j.1365-2362.1998.00390.x
更新日期:1998-11-01 00:00:00
abstract:BACKGROUND:Renal size and function reflect the health of the kidney. These parameters are associated with age, gender and body weight. The kidneys are also influenced by micro- and macrovascular diseases. Atherosclerotic markers and risk factors may influence the age-related changes of renal size and function. METHODS...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1046/j.1365-2362.2003.01091.x
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND:Nasal nitric oxide (nNO) values are reduced in patients with cystic fibrosis (CF). Humming during nNO measurement increases nNO values in healthy subjects. Nasal NO is reduced in patients with CF, sinus disease or nasal polyps. Humming nNO values have not been reported in CF patients yet. Our aim was to expl...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.2007.01758.x
更新日期:2007-02-01 00:00:00
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journal_title:European journal of clinical investigation
pub_type: 杂志文章,多中心研究
doi:10.1111/j.1365-2362.2011.02533.x
更新日期:2011-12-01 00:00:00
abstract:BACKGROUND:Profilin-1 is a ubiquitous, actin-binding protein that plays an important role in the regulation of actin polymerization and cytoskeleton remodelling and contributes to vascular dysfunction. We conducted this study to investigate the association of serum profilin-1 levels with fatal and nonfatal CVE in a coh...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/eci.12839
更新日期:2017-12-01 00:00:00
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journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.1992.tb01461.x
更新日期:1992-04-01 00:00:00
abstract:BACKGROUND:Passive smoking is a well-known risk factor for both recurrent respiratory infections and disturbed lipid profile. Whether passive smoking problems are related to altered lymphocyte survival and its relation to altered lipid profile are the points of concern in this work. MATERIALS AND METHODS:Urinary cotin...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.2010.02420.x
更新日期:2011-04-01 00:00:00
abstract::Taurodeoxycholic acid increases the incidence of aspirin induced gastric bleeding in rats and in vitro is well bound by Aludrox (aluminium hydroxide) and poorly bound by Maalox (aluminium hydroxide and magnesium hydroxide). We studied the relevance of this binding, as demonstrated in vitro, by observing the effect of ...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.1980.tb02080.x
更新日期:1980-12-01 00:00:00
abstract:BACKGROUND:The tetrapeptide acetyl-Ser-Asp-Lys-Pro (AcSDKP), a physiological inhibitor of the proliferation of haematopoietic stem cells, is degraded by the angiotensin-I-converting enzyme (ACE). Whereas synthetic AcSDKP (Goralatide) protects normal mice from the haematological toxicity of chemotherapy, it has a lower ...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1046/j.1365-2362.1998.00356.x
更新日期:1998-10-01 00:00:00
abstract:BACKGROUND:Thiopurines (TP) are widely used in the management of inflammatory bowel diseases. Side effects and inefficacy are a major concern as they lead to withdrawal of the drug. MATERIALS AND METHODS:Tools investigating TP metabolism are useful to avoid inadequate cessation of TP therapy. RESULTS:TP metabolism is...
journal_title:European journal of clinical investigation
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2362.2010.02346.x
更新日期:2010-11-01 00:00:00
abstract:BACKGROUND:The acute-phase response and anaemia of chronic disease are characterized by hypoferraemia associated with an increased ferritin synthesis, which might be mediated by the activated cytokine cascade. METHODS:We examined the prolonged effects of isolated limb perfusion (ILP) with recombinant human tumour necr...
journal_title:European journal of clinical investigation
pub_type: 临床试验,杂志文章
doi:10.1046/j.1365-2362.1998.00323.x
更新日期:1998-07-01 00:00:00
abstract:BACKGROUND:To investigate the clinical features of thyroid cancer in aging patients and to present the results of treatment. From this we can provide bases for earlier diagnoses and better treatment of thyroid malignancies in older patients. MATERIALS AND METHODS:In this study a retrospective analysis was performed wi...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1046/j.1365-2362.2000.00598.x
更新日期:2000-02-01 00:00:00
abstract:BACKGROUND:Bone marrow (BM) histology/immunohistochemistry, KIT D816V mutation analysis and serum tryptase measurements are mandatory tools for diagnosis of systemic mastocytosis (SM). MATERIALS AND METHODS:Within the 'German Registry of Disorders on Eosinophils and Mast Cells', we identified 65 patients with SM who h...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/eci.12607
更新日期:2016-05-01 00:00:00
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journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/eci.12151
更新日期:2013-11-01 00:00:00
abstract::Ten men with Klinefelter's syndrome were studied to assess the effect of testosterone replacement on plasma lipids and apolipoproteins. Measurements taken before the insertion of a testosterone ester implant were compared with those obtained 1 week and 4 weeks later. Mean plasma testosterone, androstenedione, total ch...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.1989.tb00256.x
更新日期:1989-10-01 00:00:00
abstract:BACKGROUND:Little is known about gallbladder motility in patients with black pigment stones when compared to cholesterol gallstone patients, or about their relationship to biliary composition, crystallization and stone characteristics. DESIGN:Fasting and postprandial gallbladder volumes were studied by ultrasonography...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1046/j.1365-2362.2000.00639.x
更新日期:2000-04-01 00:00:00
abstract::Endothelin-1 is a recently described endothelium-derived vasoconstricting peptide. Plasma concentrations of immunoreactive (IR-) endothelin were investigated in six healthy young men applying a radioimmunoassay after extraction of endothelin from plasma. In venous plasma a mean concentration of 1.3 +/- 0.4 pmol l-1 wa...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.1990.tb01892.x
更新日期:1990-10-01 00:00:00
abstract:BACKGROUND:Platelets are involved in the pathogenesis of bronchial asthma, including aspirin-sensitive asthma (ASA). The pineal hormone melatonin (MT) has been described as inhibiting several physiological processes in platelets. The MT metabolite - N-acetyl-5-methoxy-kynurenamine - has a chemical structure similar to ...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1046/j.1365-2362.1999.00479.x
更新日期:1999-06-01 00:00:00
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journal_title:European journal of clinical investigation
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更新日期:2020-12-01 00:00:00
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journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.1989.tb00234.x
更新日期:1989-06-01 00:00:00
abstract::The capillary permeability in human skeletal muscle, expressed as capillary diffusion capacity (CDC) for 51Cr-EDTA, was determined during exercise with a local clearance method in two groups of healthy male subjects: a younger group with a mean age of 30 years and an older one with a mean age of 58 years. The main fin...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.1979.tb00897.x
更新日期:1979-10-01 00:00:00
abstract:BACKGROUND:Experimental evidence indicates that statins might have direct vascular effects independently from low-density lipoprotein (LDL) cholesterol reduction and we reported that the reduction in urinary albumin excretion rate during Simvastatin treatment in type 2 diabetic patients was not correlated with LDL-chol...
journal_title:European journal of clinical investigation
pub_type: 临床试验,杂志文章
doi:10.1046/j.1365-2362.2000.00735.x
更新日期:2000-11-01 00:00:00
abstract:BACKGROUND:The investigation of the human follicle fluid proteome has gained much interest in the search of new markers as predictors for in vitro fertilization and intracytoplasmic sperm injection (IVF/ICSI) treatment outcome. Follicular fluid folate, as substrate of one carbon (1-C) metabolism, affects follicular met...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/eci.12478
更新日期:2015-08-01 00:00:00
abstract::Microparticles are small membrane vesicles that are released from cells upon activation or during apoptosis. Cellular microparticles in body fluids constitute a heterogeneous population, differing in cellular origin, numbers, size, antigenic composition and functional properties. Microparticles support coagulation by ...
journal_title:European journal of clinical investigation
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2362.2004.01355.x
更新日期:2004-06-01 00:00:00
abstract:BACKGROUND:Studies evaluating the relationship between soluble transferrin receptor (sTfR), a biomarker inversely related to body iron stores, and risk of type 2 diabetes mellitus (T2DM) are scarce and inconclusive. Furthermore, sTfR concentrations have been observed to be significantly higher in obese than in nonobese...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/eci.12725
更新日期:2017-03-01 00:00:00
abstract:BACKGROUND:To compare the administration of furosemide with placebo on the subjective perception of dyspnoea in patients with acute pulmonary oedema because of hypertensive crisis. Design Randomized, controlled and double-blinded clinical trial. SETTING:Municipal emergency medical service system and university-based ...
journal_title:European journal of clinical investigation
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2362.2010.02450.x
更新日期:2011-06-01 00:00:00
abstract::The stimulant action of branched-chain amino acids upon insulin release was examined in rat pancreatic islets incubated at physiological concentrations of D-glucose and L-glutamine. In the presence of the latter nutrients, L-leucine and L-isoleucine used together at a physiological concentration (0.25 mmol/l each) dou...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.1981.tb02013.x
更新日期:1981-12-01 00:00:00
abstract:BACKGROUND:Coronary vasospasm (CVsp) has been reported to be an inflammatory disease, reflected by elevated high-sensitivity C-reactive protein (hs-CRP). We investigated the interactions among gender, age, hypertension and hs-CRP in patients with CVsp. MATERIALS AND METHODS:We retrospectively examined 722 Taiwanese pa...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.2010.02360.x
更新日期:2010-12-01 00:00:00
abstract:OBJECTIVE:To evaluate comprehensively the effects of 12 prophylaxis interventions for secondary prophylaxis of variceal bleeding using multiple-treatments meta-analysis. METHODS:PubMed, EMBASE and the Cochrane Library were searched prior to November 2011. Randomized controlled trials (RCTs) comparing the interventions...
journal_title:European journal of clinical investigation
pub_type: 杂志文章,meta分析,评审
doi:10.1111/eci.12115
更新日期:2013-08-01 00:00:00