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Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme

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https://www.readbyqxmd.com/read/28103616/l-lysine-acts-as-a-serotonin-type-4-receptor-antagonist-to-counteract-in-vitro-and-in-vivo-the-stimulatory-effect-of-serotonergic-agents-on-aldosterone-secretion-in-man
#1
C Duparc, C André, J Ménard, B Godouet-Getti, J Wils, A F Cailleux, L Moreau-Grangé, E Louiset, H Lefebvre
In the normal human adrenal gland, serotonin (5-HT) stimulates aldosterone secretion through the 5-HT4 receptor (5-HT4R). However, the physiological role of the serotonergic control of adrenocortical function is not known. In the present study, we have investigated the ability of l-Lysine, which has been shown to act as a 5-HT4 receptor antagonist, to counteract in vitro and in vivo the stimulatory effect of 5-HT4R agonists on aldosterone production. l-Lysine was found to inhibit aldosterone production induced by 5-HT and the 5-HT4R agonists BIMU8 from cultured human adrenocortical cells...
January 19, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28099977/a-step-by-step-clinical-approach-for-the-management-of-neuroendocrine-tumours
#2
A Yordanova, H Ahmadzadehfar, M Gonzalez-Carmona, C Strassburg, K Mayer, G Feldmann, I Schmidt-Wolf, R Lingohr, S Fischer, G Kristiansen, M Essler
Neuroendocrine tumours (NET) are rare neoplasms, but the incidence is permanently increasing. Most of the NETs are slow proliferating and clinically silent, and for that reason, they are often diagnosed at a stage with advanced disease. The complexity and diversity of the NET-biology require the treatment of patients in specialised centres to guarantee a qualified, multidisciplinary treatment planning. At our institution, we developed an interdisciplinary model for the assessment and treatment of NET. The aim was to adapt the guidelines to the clinical practice, exchange of current knowledge, and a tailored approach to the individual patient...
January 18, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28081581/differences-in-gene-expression-and-gene-associations-in-epicardial-fat-compared-to-subcutaneous-fat
#3
J Yim, S W Rabkin
Epicardial adipose tissue (EAT) plays a role in cardiac physiology and may contribute to the development of coronary artery disease. Our objective was to determine whether there was a significant difference in gene expression in EAT compared to subcutaneous adipose tissue (SAT) and to identify potential relationships. MEDLINE and EMBASE were searched using the key terms "Epicardial Adipose Tissue" or "Epicardial Fat" in combination with "RNA", "mRNA", or "gene". The entry criteria were studies that presented primary data including expression levels of mRNA in human EAT compared with SAT and an expression of variance (SD)...
January 12, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27926952/growth-hormone-treatment-increases-plasma-irisin-concentration-in-patients-with-turner-syndrome
#4
B Wikiera, K Zawadzka, Ł Łaczmański, N Słoka, M Bolanowski, A Basiak, A Noczyńska, J Daroszewski
Irisin (Ir) deficiency may be a contributing factor in metabolic disease. This study aimed to investigate the effect of supraphysiological doses of recombinant human growth hormone (rhGH) on Ir plasma concentration in relation to metabolic disorders, including obesity and other components of metabolic syndrome. We studied 36 girls with Turner syndrome (mean age 8.2 years) treated with rhGH (0.05 mg/kg/day). Anthropometric data and fasting blood levels [e. g., Ir, insulin, glucose, glycated hemoglobin (HbA1c), IGF-1, IGFBP-3, cholesterol, insulin resistance (HOMA-IR), and β-cell function (HOMA-β)] were analyzed prior to and following rhGH therapy [mean (SD) follow-up of 1...
December 7, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27926951/a-novel-mutation-of-the-calcium-sensing-receptor-gene-in-a-franconian-kindred-heterozygous-mutation-c-1697_1698deltg-exon-6
#5
M Cordes, T Kuwert, C Haag, F Raue
Familial hypocalciuric hypercalcemia (FHH) belongs to the disorders of a disturbed calcium homeostasis. Genetically, the disorder is inherited in an autosomal-dominant trait and represents an inactivating mutation of the calcium sensing receptor (CaSR) gene. We identified a Franconian kindred in which 6 individuals could be tested by molecular genetic means. In 5 individuals of 3 generations, the mutation could be classified as c.1697_1698delTG. This novel germline mutation creates a premature stop codon leading to a loss of 510 amino acids of the protein...
December 7, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27923262/circulating-levels-of-lamp2-in-coronary-artery-disease-association-with-serum-lipid-profile
#6
M Teimouri, P Shabani, F Zali, M Najafi, H Shateri, M Asadnia, A Vatannejad, M Najafi, M Doosti
Whereas several in vitro and in vivo studies have described the role of lysosomal associated membrane protein 2 (LAMP2) in lipid homeostasis, there is no study addressing LAMP2 serum concentration and its association with lipid profiles in the context of coronary artery disease (CAD). We aimed to determine the LAMP2 serum concentration and its association with serum lipid profiles as well as the gene expression of LAMP2 in peripheral blood mononuclear cells (PBMCs) of CAD patients and control group. Circulating levels of LAMP2 were quantified by enzyme-linked immunosorbent assay (ELISA) in CAD patients (n=85) and control group (n=65) and correlation to lipid parameters was assessed...
December 6, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27875850/pka-and-apicomplexan-parasite-diseases
#7
M Haidar, G Ramdani, E J Kennedy, G Langsley
No abstract text is available yet for this article.
November 22, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27871112/prkaca-mutations-in-adrenal-adenomas-genotype-phenotype-correlations
#8
G D Dalmazi, F Beuschlein
Untargeted, next generation sequencing approaches have provided deep insights into genetic events that result in unopposed steroidogenesis from the adrenal cortex. In particular, somatic mutations in the gene encoding the catalytic subunit α of protein kinase A (PKA) (PRKACA) were identified independently by several groups as the most frequently altered gene in cortisol-producing adenomas. Detailed functional studies could explore the molecular consequences of these hot-spot mutations and large international cohorts have provided the basis to explore the clinical characteristics associated with this mutation...
November 21, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27835919/pka-and-apicomplexan-parasite-diseases
#9
M Haidar, G Ramdani, E J Kennedy, G Langsley
The cAMP-dependent protein kinase PKA is a well-characterized member of the serine-threonine protein AGC kinase family and is the effector kinase of cAMP signaling. As such, PKA is involved in the control of a wide variety of cellular processes including metabolism, cell growth, gene expression and apoptosis. cAMP-dependent PKA signaling pathways play important roles during infection and virulence of various pathogens. Since fluxes in cAMP are involved in multiple intracellular functions, a variety of different pathological infectious processes can be affected by PKA signaling pathways...
November 11, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27835918/parathyroid-hormone-polymorphism-rs6254-is-associated-with-the-development-and-severity-of-osteoporosis-in-asymptomatic-but-not-normocalcemic-hyperparathyroidism
#10
G Díaz-Soto, E Romero, J L Pérez-Castrillón, O I Jauregui, D de Luis Román
No abstract text is available yet for this article.
November 11, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27832672/tumor-necrosis-factor-%C3%AE-is-inversely-related-to-free-thyroxine-in-euthyroid-subjects-without-diabetes
#11
L J N van Tienhoven-Wind, R P F Dullaart
Lower thyroid functional status within the euthyroid range may confer increased atherosclerosis susceptibility, as evidenced by increased intima media thickness and coronary artery calcification. Associations of lower thyroid functional status with pro-atherogenic (inflammatory) biomarkers may also extend into the euthyroid range. Here we established relationships of plasma tumor necrosis factor-α (TNF-α) with thyroid stimulating hormone (TSH) and free thyroxine (free T4) in euthyroid subjects with and without Type 2 diabetes mellitus (T2DM)...
November 10, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27824398/effects-of-quercetin-on-adiponectin-mediated-insulin-sensitivity-in-polycystic-ovary-syndrome-a-randomized-placebo-controlled-double-blind-clinical-trial
#12
N Rezvan, A Moini, L Janani, K Mohammad, A Saedisomeolia, M Nourbakhsh, S Gorgani-Firuzjaee, M Mazaherioun, M J Hosseinzadeh-Attar
Polycystic ovary syndrome (PCOS) is a heterogeneous, multi-causal, and genetically complex disorder, which is related to the failure in endocrine glands. Adiponectin has been reported to be low in PCOS, even in the absence of adiposity. Quercetin reduces serum glucose, insulin, triglycerides, and cholesterol levels and increases the expression and secretion of adiponectin. The aim of this study was to determine the effect of quercetin on the adiponectin-mediated insulin sensitivity in PCOS patients. Eighty-four women with PCOS were selected and randomly assigned to 2 groups of treatment and control...
November 7, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27813054/mechanisms-of-aberrant-pka-activation-by-c%C3%AE-subunit-mutations
#13
D Calebiro, K Bathon, I Weigand
Somatic mutations in PRKACA, coding for the catalytic α subunit of protein kinase A (PKA), have been recently identified as the most frequent genetic alteration in cortisol-secreting adrenocortical adenomas, which are responsible for adrenal Cushing's syndrome. The mutations identified so far lie at the interface between the catalytic (C) and regulatory (R) subunit of PKA. Detailed functional studies of the most frequent of these mutations (L206R) as well as of another one in the same region of the C subunit (199_200insW) have revealed that these mutations cause constitutive activation of PKA and lack of regulation by cAMP...
November 3, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27813052/effects-of-metformin-on-endocrine-and-metabolic-parameters-in-patients-with-polycystic-ovary-syndrome
#14
M Zahra, M Shah, A Ali, R Rahim
The present study was designed to evaluate the effects of metformin on metabolic and endocrine parameters in patients with polycystic ovary syndrome (PCOS). The study included 40 patients with PCOS. Patients were divided into 2 groups based on whether they will receive metformin (500 mg 3 times a day, n=20) or placebo (n=20) for 3 consecutive months. Serum concentrations of fasting blood glucose, insulin, HOMA-IR, INSL-3, visfatin, FSH, and LH were measured at baseline and after 3 months of therapy. The key endocrine and metabolic parameters significantly changed after metformin treatment...
November 3, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28103623/metabolic-inflexibility-with-obesity-and-the-effects-of-fenofibrate-on-skeletal-muscle-fatty-acid-oxidation
#15
Kristen E Boyle, Jacob E Friedman, Rachel C Janssen, Chantal Underkofler, Joseph A Houmard, Neda Rasouli
This study was designed to investigate mechanisms of lipid metabolic inflexibility in human obesity and the ability of fenofibrate (FENO) to increase skeletal muscle fatty acid oxidation (FAO) in primary human skeletal muscle cell cultures (HSkMC) exhibiting metabolic inflexibility. HSkMC from 10 lean and 10 obese, insulin resistant subjects were treated with excess fatty acid for 24 h (24hFA) to gauge lipid-related metabolic flexibility. Metabolically inflexible HSkMC from obese individuals were then treated with 24hFA in combination with FENO to determine effectiveness for increasing FAO...
January 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27813053/elevated-steroid-hormone-production-in-the-db-db-mouse-model-of-obesity-and-type-2-diabetes
#16
Anja Hofmann, Mirko Peitzsch, Coy Brunssen, Jennifer Mittag, Annett Jannasch, Annika Frenzel, Nicholas Brown, Steven M Weldon, Graeme Eisenhofer, Stefan R Bornstein, Henning Morawietz
Obesity and type 2 diabetes have become a major public health problem worldwide. Steroid hormone dysfunction appears to be linked to development of obesity and type 2 diabetes and correction of steroid abnormalities may offer new approaches to therapy. We therefore analyzed plasma steroids in 15-16 week old obese and diabetic db/db mice using liquid chromatography-tandem mass spectrometry. Lean db/+ served as controls. Db/db mice developed obesity, hyperglycemia, hyperleptinemia, and hyperlipidemia. Hepatic triglyceride storage was increased and adiponectin and pancreatic insulin were lowered...
January 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27813048/neuroactive-steroids-in-acute-ischemic-stroke-association-with-cognitive-functional-and-neurological-outcomes
#17
Sebastian Casas, Maria Claudia Gonzalez Deniselle, Gisella M Gargiulo-Monachelli, Andres Felipe Perez, Martin Tourreilles, Marcelo Mattiazzi, Cristian Ojeda, Daniel Lotero Polesel, Alejandro F De Nicola
Despite several scientific and technological advances, there is no single neuroprotective treatment that can reverse the brain damage after acute ischemic stroke (AIS). Neuroactive steroids are cholesterol-derived hormones that have the ability to modulate the normal and pathologic nervous system employing genomic and nongenomic mechanisms. In this work, we first investigated if AIS affects the plasma concentration of 5 neuroactive steroids (cortisol, estradiol, progesterone, testosterone, and 3α-androstenediol glucuronide)...
January 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27711951/novel-heterozygous-genetic-variants-in-patients-with-46-xy-gonadal-dysgenesis
#18
V Chauhan, V P Jyotsna, V Jain, R Khadgawat, R Dada
46,XY gonadal dysgenesis (GD) constitutes a rare group of disorders characterized by the presence of dysfunctional testes in genotypic males. The molecular etiology is not known in about 2 thirds of instances. The aim of this study was to identify the genetic cause in patients with 46,XY gonadal dysgenesis. Based on clinical, cytogenetic, and biochemical screening, 10 patients with 46,XY GD were recruited. Direct sequencing of SRY, NR5A1, SOX9, DAX1, DHH, DMRT1 genes was carried out for molecular analysis. Among 10 patients, 5 were diagnosed with complete gonadal dysgenesis (CGD), 3 with partial gonadal dysgenesis (PGD), and 3 with testicular agenesis...
October 6, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27701682/ghrelin-ghrelin-o-acyltransferase-and-carbohydrate-metabolism-during-pregnancy-in-calorie-restricted-mice
#19
Arjun Trivedi, Sandra Babic, Mark Heiman, William T Gibson, Jean-Pierre Chanoine
Acylation of ghrelin is mediated by ghrelin O-acyltansferase (GOAT). Exogenous acylated ghrelin (AG) stimulates growth hormone (GH) and food intake. In non-pregnant (NP) animals, the GOAT-ghrelin-GH axis prevents hypoglycemia caused by caloric restriction (CR). In humans, maternal malnutrition challenges glucose metabolism, which is a key determinant of fetal health. To clarify the role of AG and GH, we compared effects of CR on the GOAT-ghrelin-GH axis in pregnant (P) and NP mice. C57BL/6 wild type (WT) and GOAT knock-out (KO) P and NP mice were freely fed (FF) or subjected to 50% CR for one week...
January 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27589346/short-term-detraining-does-not-change-insulin-sensitivity-and-rbp4-in-rodents-previously-submitted-to-aerobic-exercise
#20
Rafael A Marschner, Graziela Pinto, Júlia Borges, Melissa Medeiros Markoski, Beatriz D Schaan, Alexandre Machado Lehnen
Elevated serum retinol binding protein 4 (RBP4) levels were previously described in insulin-resistance states. Exercise training can improve insulin sensitivity and RBP4, but the time-response effect of exercise detraining on RBP4 has not been studied. Thus, we examined the effects of exercise training and short-term detraining on insulin resistance, serum RBP4 levels, and GLUT4 expression in spontaneously hypertensive rats (SHR). Thirty-two male SHR, 4 months old, were submitted to 10-week treadmill training, 5 times/week or kept sedentary, followed by a 2- and 4-day detraining period...
January 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
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