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Endocrine Connections

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https://www.readbyqxmd.com/read/28196799/a-phase-2-trial-of-long-acting-transcon-growth-hormone-in-adult-gh-deficiency
#1
Charlotte Höybye, Andreas F H Pfeiffer, Diego Ferone, Jens S Christiansen, David Gilfoyle, Eva Dam Christoffersen, Eva Mortensen, Jonathan A Leff, Michael Beckert
TransCon growth hormone is a sustained release human growth hormone prodrug in development in which unmodified growth hormone is transiently linked to a carrier molecule. It is intended as an alternative to daily growth hormone in the treatment of growth hormone deficiency. This was a multi-center, randomized, open-label, active-controlled trial designed to compare the safety (including tolerability and immunogenicity), pharmacokinetics, and pharmacodynamics of three doses of weekly TransCon GH to daily growth hormone (Omnitrope)...
February 14, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28179377/hepcidin-links-gluco-toxicity-to-pancreatic-beta-cell-dysfunction-through-inhibiting-pdx-1-expression
#2
Xuhua Mao, Hucheng Chen, Junmin Tang, Liangliang Wang, Tingting Shu
OBJECTIVE: Gluco-toxicity is a term used to convey the detrimental effect of hyperglycemia on β-cell function through impaired insulin synthesis. Although it is known that the expression and activity of several key insulin transcription regulators is inhibited, other molecular mechanisms that mediate gluco-toxicity are poorly defined. Our objective was to explore the role of hepcidin in β-cell gluco-toxicity. DESIGN: We first confirmed that high glucose levels inhibited hepcidin expression in the mouse insulinoma cell line, MIN6...
February 8, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28179376/the-variation-in-free-25-hydroxy-vitamin-d-and-vitamin-d-binding-protein-with-season-and-vitamin-d-status
#3
Göran Oleröd, Lillemor Mattsson Hultén, Ola Hammarsten, Eva Klingberg
PURPOSE: Serum 25-hydroxy vitamin D [25(OH)D] varies greatly with season at northern latitudes. The purpose of this study was to determine if the seasonal variations in serum total 25(OH)D is followed by a concomitant variation in free 25(OH)D or if the variation is damped by alterations in the binding capacity of DBP. METHODS: Serum was collected from 540 healthy blood donors (60% men; mean age 41±13 years) during 12 months and analyzed for total 25(OH)D, directly measured free 25(OH)D, vitamin D binding protein (DBP) and albumin...
February 8, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28174253/vitamin-d-induces-myogenic-differentiation-in-skeletal-muscle-derived-stem-cells
#4
Melissa Braga, Zena Simmons, Keith C Norris, Monica G Ferrini, Jorge N Artaza
Skeletal muscle wasting is a serious disorder associated with health conditions such as aging, chronic kidney disease, and AIDS. Vitamin D is most widely recognized for its regulation of calcium and phosphate homeostasis in relation to bone development and maintenance. Recently, Vitamin D supplementation has been shown to improve muscle performance and reduce the risk of falls in Vitamin D deficient older adults. However, little is known of the underlying molecular mechanism(s) or the role it plays in myogenic differentiation...
February 7, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28126832/effect-of-%C3%AE-agonist-on-the-dexamethasone-induced-expression-of-aromatase-by-the-human-monocyte-cells
#5
Masatada Watanabe, Shuji Ohno, Hiroshi Wachi
Emerging evidence suggests that sex steroids are important for human skin health. In particular, estrogen improves skin thickness, elasticity, and moisture of older women. The major source of circulating estrogen is the ovary; however, local estrogen synthesis and secretion have important roles in, for example, bone metabolism and breast cancer development. We hypothesized that infiltrated peripheral monocytes are one of the sources of estrogen in skin tissues. We also hypothesized that, during atopic dermatitis under stress, a decline in the hypothalamus-pituitary-adrenal axis (HPA) and facilitation of the (hypothalamus)-sympathetic-adrenomedullary system (SAM) attenuates estrogen secretion from monocytes...
January 26, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28119323/liraglutide-in-polycystic-ovary-syndrome-a-randomized-trial-investigating-effects-on-thrombogenic-potential
#6
Malin Nylander, Signe Frøssing, Caroline Kistorp, Jens Faber, Sven Olaf Skouby
Polycystic ovary syndrome (PCOS) is associated with increased risk of venous thromboembolism (VTE) and cardiovascular disease (CVD) in later life. We aimed to study the effect of liraglutide intervention on some markers of VTE and CVD, in PCOS. In a double-blind, placebo-controlled, randomized trial 72 overweight and/or insulin resistant women with PCOS were randomized, in a 2:1 ratio, to liraglutide or placebo 1.8 mg/day. Endpoints included between-group difference, from baseline to 26-week follow-up, in change in thrombin generation test parameters: Endogenous thrombin potential, peak thrombin concentration, lag-time and time-to-peak, and in levels of plasminogen activator inhibitor-1...
January 24, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28119322/the-role-of-glucocorticoids-and-corticotropin-releasing-hormone-regulation-on-anxiety-symptoms-and-response-to-treatment
#7
Greta Bielaczyc Raglan, Louis A Schmidt, Jay Schulkin
The stress response has been linked to the expression of anxiety and depression, but the mechanisms for these connections are under continued consideration. The activation and expression of glucocorticoids and CRH are variable, and may hold important clues to individual experiences of mood disorders. This paper explores the interactions of glucocorticoids and CRH in the presentation of anxiety and depressive disorders in an effort to better describe their differing roles in each of these clinical presentations...
January 24, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28104724/predicting-survival-of-patients-with-small-bowel-neuroendocrine-tumours-comparison-of-3-systems
#8
Ashley Kieran Clift, Omar Faiz, Rob Goldin, John Martin, Harpreet Wasan, Marc-Olaf Liedke, Erik Schloericke, Anna Malczewska, Guido Rindi, Mark Kidd, Irvin Modlin, Andrea Frilling
Neuroendocrine tumours (NET) are clinically challenging due to their unpredictable behaviour. Nomograms, grading and staging systems are predictive tools with multiple roles in clinical practice, including patient prognostication. The NET nomogram allocates scores for various clinicopathological parameters, calculating percentage estimates for 5- and 10-year disease-specific survival of patients with small bowel (SB) NET. We evaluated the clinical utility of three prognostic systems in 70 SB NET patients: the NET nomogram, the World Health Organisation (WHO)/European Neuroendocrine Tumour Society (ENETS) grading system and the American Joint Commission on Cancer (AJCC)/Union Internationale Contre le Cancer (UICC) TNM staging method...
January 19, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28087609/role-of-attitudes-and-intentions-in-predicting-adherence-to-oral-diabetes-medications
#9
Emmanuel K Fai, Cheryl Anderson, Victor Ferreros
The purpose of this quantitative study was to investigate the extent to which patient attitudes and intentions predict adherence to the use of oral antihyperglycemic regimens in African Americans. This cross-sectional study of 115 participants used correlation analysis to establish relationships between patient attitudes, intentions, and adherence. Data analyses showed significant correlations between the variables. Multiple regression analysis was used to establish predictions between the variables. A prediction model containing attitudes, subjective norms, and perceived behavioral control (PBC) explained 37% of the variance to behavioral intention...
January 13, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28069899/lps-infusion-suppresses-serum-fgf21-levels-in-healthy-adult-volunteers
#10
Esben Stistrup Lauritzen, Nikolaj Rittig, Ermina Bach, Niels Moller, Mette Bjerre
CONTEXT: During the inflammatory acute phase response plasma glucose and serum triglycerides are increased in humans. Fibroblast growth factor (FGF) 21 has plasma glucose and lipid reducing actions, but its role in the acute inflammatory response in human is unknown. OBJECTIVE: To investigate circulating levels of FGF21 after lipopolysaccharide (LPS) infusion. DESIGN: Two randomized, single blinded, placebo-controlled crossover trials were used...
January 9, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28069898/is-visual-radiological-evaluation-of-liver-tumour-burden-in-patients-with-neuroendocrine-tumours-reproducible
#11
Magaly Zappa, Olivia Hentic, Marie-Pierre Vullierme, Matthieu Lagadec, Maxime Ronot, Philippe Ruszniewski, Valérie Vilgrain
Background Visual semi-quantitative assessment of liver tumour burden for neuroendocrine tumour liver metastases is often used in patient management and outcome. However, published data on the reproducibility of these evaluations are lacking. Objective The aim of this study was to evaluate the inter and intraobserver agreement of a visual semi-quantitative assessment of liver tumour burden using CT scan. Methods Fifty consecutive patients (24 men and 26 women, mean age 54 years old) were retrospectively reviewed by four readers (two senior radiologists, one junior radiologist and one gastroenterologist) who assessed the liver tumour burden based on visual a semi-quantitative method with four classes (0-10%, 11-25%, 26-50%, and ≥50%)...
January 9, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28069897/impact-of-estrogen-receptor-%C3%AE-gene-and-oxytocin-receptor-gene-polymorphisms-on-female-sexuality
#12
Anastasia K Armeni, Konstantinos Assimakopoulos, Dimitra J Marioli, Vasiliki Koika, Eftychia Michailidou, Niki Mourtzi, Gregoris Iconomou, Neoklis A Georgopoulos
Over the past decades, research attention has increasingly been paid to the neurobiological component of sexual behaviour. The aim of the present study was to investigate the correlation of estrogen receptor α (ERα) gene polymorphism (rs2234693-PvuII) (T→C substitution) and oxytocin receptor gene polymorphism (rs53576) (G→A substitution) with sexuality parameters of young, healthy women. One hundred thirty-three Greek heterosexual women, students in higher education institutions, 20-25 years of age, sexually active, with normal menstrual cycles (28-35 days), were recruited in the study...
January 9, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28069896/anti-tumor-effects-of-shikonin-derivatives-on-human-medullary-thyroid-carcinoma-cells
#13
Carina Hasenoehrl, Gert Schwach, Nassim Ghaffari-Tabrizi-Wizsy, Robert Fuchs, Nadine Kretschmer, Rudolf Bauer, Roswitha Pfragner
New treatment options are needed for medullary thyroid carcinoma (MTC), a highly metastasizing neuroendocrine tumor that is resistant to standard radio- and chemotherapy. We show that the following shikonin derivatives inhibit cell proliferation and cell viability of the MTC cell line TT: acetylshikonin, β,β-dimethylacrylshikonin, shikonin and a petroleum ether extract of the roots of Onosma paniculata containing several shikonin derivatives. The unsubstituted shikonin derivative was found to be the most effective compound with an IC50 of 1...
January 9, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/27998954/glucagon-producing-cells-are-increased-in-mas-deficient-mice
#14
Janaína Felix Braga, Daniela Ravizzoni Dartora, Natalia Alenina, Michael Bader, Robson Augusto Souza Santos
It has been shown that angiotensin(1-7) (Ang(1-7)) produces several effects related to glucose homeostasis. In this study, we aimed to investigate the effects of genetic deletion of Ang(1-7), the GPCR Mas, on the glucagon-producing cells. C57BL6/N Mas(-/-) mice presented a significant and marked increase in pancreatic α-cells (number of cells: 146 ± 21 vs 67 ± 8 in WT; P < 0.001) and the percentage per islet (17.9 ± 0.91 vs 12.3 ± 0.9% in WT; P < 0.0001) with subsequent reduction of β-cells percentage (82...
January 2017: Endocrine Connections
https://www.readbyqxmd.com/read/27998953/leptin-pharmacokinetics-in-male-mice
#15
Robert A Hart, Robin C Dobos, Linda L Agnew, Neil A Smart, James R McFarlane
Pharmacokinetics of leptin in mammals has not been studied in detail and only one study has examined more than one time point in non-mutant mice and this was in a female mice. This is the first study to describe leptin distribution over a detailed time course in normal male mice. A physiologic dose (12 ng) of radiolabelled leptin was injected into adult male mice via the lateral tail vein and tissues were dissected out and measured for radioactivity over a time course of up to two hours. Major targets were the digestive tract, kidneys, skin and lungs...
January 2017: Endocrine Connections
https://www.readbyqxmd.com/read/27956412/expression-of-renin-angiotensin-system-ras-components-in-endometrial-cancer
#16
Sarah J Delforce, Eugenie R Lumbers, Celine Corbisier de Meaultsart, Yu Wang, Anthony Proietto, Geoffrey Otton, Jim Scurry, Nicole M Verrills, Rodney J Scott, Kirsty G Pringle
A dysfunctional endometrial renin-angiotensin system (RAS) could aid the growth and spread of endometrial cancer. To determine if the RAS is altered in endometrial cancer, we measured RAS gene expression and protein levels in 30 human formalin-fixed, paraffin-embedded (FFPE) endometrioid carcinomas and their adjacent endometrium. All components of the RAS were expressed in most tumours and in adjacent endometrium; mRNA levels of (pro)renin receptor (ATP6AP2), angiotensin II type 1 receptor (AGTR1), angiotensin-converting enzyme (ACE1) and angiotensin-converting enzyme 2 (ACE2) mRNA levels were greater in tumour tissue than adjacent non-cancerous endometrium (P = 0...
January 2017: Endocrine Connections
https://www.readbyqxmd.com/read/27864317/prednisolone-is-associated-with-a-worse-lipid-profile-than-hydrocortisone-in-patients-with-adrenal-insufficiency
#17
Marcus Quinkler, Bertil Ekman, Claudio Marelli, Sharif Uddin, Pierre Zelissen, Robert D Murray
OBJECTIVE: Prednisolone is used as glucocorticoid replacement therapy for adrenal insufficiency (AI). Recent data indicate that its use in AI is associated with low bone mineral density. Data on risk factors for cardiovascular disease in patients with AI treated with prednisolone are scarce, despite this condition being the predominant cause of excess mortality. We aimed to address this question using real-world data from the European Adrenal Insufficiency Registry (EU-AIR). DESIGN/METHODS: EU-AIR, comprising of 19 centres across Germany, the Netherlands, Sweden and the UK, commenced enrolling patients with AI in August 2012...
January 2017: Endocrine Connections
https://www.readbyqxmd.com/read/27881447/cmklr1-activation-ex-vivo-does-not-increase-proportionally-to-serum-total-chemerin-in-obese-humans
#18
Jay Toulany, Sebastian D Parlee, Christopher J Sinal, Kathryn Slayter, Shelly McNeil, Kerry B Goralski
Prochemerin is the inactive precursor of the adipokine chemerin. Proteolytic processing is obligatory for the conversion of prochemerin into active chemerin and subsequent regulation of cellular processes via the chemokine-like receptor 1 (CMKLR1). Elevated plasma or serum chemerin concentrations and differential processing of prochemerin have been reported in obese humans. The impact of these changes on CMKLR1 signalling in humans is unknown. The objective of this pilot study was to develop a cellular bioassay to measure CMKLR1 activation by chemerin present in human serum and to characterise how obesity modifies serum activation of CMKLR1 under fasted and fed conditions...
November 2016: Endocrine Connections
https://www.readbyqxmd.com/read/27856496/interrelationships-among-reproductive-hormones-and-antral-follicle-count-in-human-menstrual-cycles
#19
David Mark Robertson, Chel Hee Lee, Angela Baerwald
It is recognised that ovarian factors, including steroid and protein hormones, are critical in the feedback regulation of pituitary gonadotropins; however, their individual contributions are less defined. The aim of this study was to explore the reciprocal relationships between ovarian and pituitary hormones across the normal ovulatory menstrual cycle as women age. FSH, LH, oestradiol, progesterone, inhibin A, inhibin B and anti-mullerian hormone (AMH) were measured in serum collected every 1-3 days across one interovulatory interval (IOI) from 26 healthy women aged 18-50 years...
November 2016: Endocrine Connections
https://www.readbyqxmd.com/read/27856495/clinical-outcomes-of-a-cohort-of-patients-with-central-nervous-system-metastases-from-thyroid-cancer
#20
Joana Simões-Pereira, Daniel Macedo, Maria João Bugalho
INTRODUCTION: Metastases to central nervous system (M1-CNS) are rarely reported in thyroid cancer (TC) patients. We aimed to characterize patients with M1-CNS from TC followed in our department. METHODS: Review of the medical records of 27 patients with TC-related M1-CNS. RESULTS: Mean age at TC diagnosis was 56.9 ± 19.1 years. Papillary TC (55.6%) was the commonest histological type, followed by poorly differentiated (18.5%), medullary (11...
November 2016: Endocrine Connections
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