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https://www.readbyqxmd.com/read/28167369/post-dexamethasone-serum-copeptin-corresponds-to-hpa-axis-responsiveness-in-human-obesity
#1
Christian Schinke, Swen Hesse, Muriel Stoppe, Klara Meyer, Elisa Schmidt, Johannes Orthgiess, Lukas Bechmann, Anke Bresch, Michael Rullmann, Julia Luthardt, Osama Sabri, Matthias Blüher, Jürgen Kratzsch, Florian Then Bergh
CONTEXT: Increased activities of the arginine-vasopressin (AVP) system and the hypothalamic-pituitary-adrenal (HPA) axis were shown to be associated with human obesity, but relationships between these systems in obesity remain unclear. OBJECTIVES: To assess HPA axis responsiveness and its relation to serum concentrations of the AVP-surrogate copeptin in subjects with obesity (OB) in comparison to non-obesity controls (NOC). METHODS: In a cross-sectional monocentric study, thirty-nine OB (f/m 25/14; age 36...
January 16, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28125604/increased-symmetric-dimethylarginine-level-is-associated-with-worse-hospital-outcomes-through-altered-left-ventricular-ejection-fraction-in-patients-with-acute-myocardial-infarction
#2
Julie Lorin, Jean-Claude Guilland, Karim Stamboul, Charles Guenancia, Yves Cottin, Luc Rochette, Catherine Vergely, Marianne Zeller
OBJECTIVES: We aimed to investigate whether SDMA- symmetric dimethylarginine -the symmetrical stereoisomer of ADMA- might be a marker of left ventricular function in AMI. BACKGROUND: Asymmetric dimethylarginine (ADMA) has been implicated in the prognosis after acute myocardial infarction (AMI) and heart failure (HF). METHODS: Cross sectional prospective study from 487 consecutive patients hospitalized <24 hours after AMI. Patients with HF on admission were excluded...
2017: PloS One
https://www.readbyqxmd.com/read/28095492/growth-hormone-deficiency-is-associated-with-worse-cardiac-function-physical-performance-and-outcome-in-chronic-heart-failure-insights-from-the-t-o-s-ca-ghd-study
#3
Michele Arcopinto, Andrea Salzano, Francesco Giallauria, Eduardo Bossone, Jörgen Isgaard, Alberto M Marra, Emanuele Bobbio, Olga Vriz, David N Åberg, Daniele Masarone, Amato De Paulis, Lavinia Saldamarco, Carlo Vigorito, Pietro Formisano, Massimo Niola, Francesco Perticone, Domenico Bonaduce, Luigi Saccà, Annamaria Colao, Antonio Cittadini
BACKGROUND: Although mounting evidence supports the concept that growth hormone (GH) deficiency (GHD) affects cardiovascular function, no study has systematically investigated its prevalence and role in a large cohort of chronic heart failure (CHF) patients. Aim of this study is to assess the prevalence of GHD in mild-to-moderate CHF and to explore clinical and functional correlates of GHD. METHODS: One-hundred thirty CHF patients underwent GH provocative test with GHRH+arginine and accordingly categorized into GH-deficiency (GHD, n = 88, age = 61...
2017: PloS One
https://www.readbyqxmd.com/read/28057871/copeptin-a-surrogate-marker-for-arginine-vasopressin-is-associated-with-disease-severity-and-progression-in-iga-nephropathy-patients
#4
Debbie Zittema, Jan A J G van den Brand, Stephan J L Bakker, Jack F Wetzels, Ron T Gansevoort
BACKGROUND: Besides its essential role for water homeostasis, arginine vasopressin (AVP) may have deleterious effects on the kidney. Copeptin, a surrogate marker for AVP, has been shown to be related to renal outcome in patients with diabetic nephropathy and polycystic kidney disease. We investigated the association of copeptin with disease severity and progression in immunoglobulin A nephropathy (IgAN). METHODS: We included a prospective cohort of 59 patients with biopsy proven IgAN...
January 5, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28034972/the-association-between-musculoskeletal-pain-and-circulating-ornithine-a-population-based-study
#5
Pekka Mäntyselkä, Toni Ali-Sisto, Hannu Kautiainen, Leo Niskanen, Heimo Viinamäki, Vidya Velagapudi, Soili M Lehto
OBJECTIVE:  Based on several previous clinical studies, we hypothesized that ornithine levels are different among subjects with persistent musculoskeletal pain compared with other subjects in the population. DESIGN:  The study sample consisted of 221 adults with nonpersistent pain, 76 with persistent pain, and 61 with no pain. Concentrations of glutamic acid, ornithine, citrulline, arginine, proline, and spermidine were analyzed using a mass spectrometer. SETTING:  Lapinlahti municipality in Finland...
December 29, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/27974050/neonatal-milk-supplementation-in-lambs-has-persistent-effects-on-growth-and-metabolic-function-that-differ-by-sex-and-gestational-age
#6
Mary J Berry, Anne L Jaquiery, Mark H Oliver, Jane E Harding, Frank H Bloomfield
The perinatal environment has a major influence on long-term health and disease risk. Preterm birth alters early-life environment and is associated with altered metabolic function in adulthood. Whether preterm birth per se or the early nutritional interventions used to support growth in preterm infants underpins this association is unknown. Lambs born preterm, following dexamethasone induction of labour, or spontaneously at term were randomised to receive nutrient supplementation, analogous to the milk fortifier used clinically or water as a control for the first 2 weeks after birth...
December 2016: British Journal of Nutrition
https://www.readbyqxmd.com/read/27932410/anthropometric-factors-have-significant-influence-on-the-outcome-of-the-ghrh-arginine-test-establishment-of-normative-data-for-an-automated-immunoassay-specifically-measuring-22%C3%A2-kda-human-growth-hormone
#7
Timo Deutschbein, Martin Bidlingmaier, Jochen Schopohl, Christian J Strasburger, Stephan Petersenn
CONTEXT: Adult growth hormone (GH) deficiency (GHD) is diagnosed by provocative testing of GH secretion. OBJECTIVE: To improve the diagnostic accuracy of GH-releasing hormone (GHRH) plus arginine (GARG) testing, we evaluated the influence of age, BMI and sex and established normative data for an automatic immunoassay specifically measuring 22 kDa human GH. DESIGN/SETTING: Prospective multicenter study. PARTICIPANTS: Eighty-seven patients with hypothalamic-pituitary disease and 200 healthy controls...
March 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/27880955/long-term-angiotensin-ii-receptor-blockade-limits-hypertension-aortic-dysfunction-and-structural-remodeling-in-a-rat-model-of-chronic-kidney-disease
#8
Omar Z Ameer, Mark Butlin, Elena Kaschina, Manuela Sommerfeld, Alberto P Avolio, Jacqueline K Phillips
BACKGROUND/AIMS: Chronic kidney disease (CKD) is associated with large artery remodeling, endothelial dysfunction and calcification, with angiotensin II (Ang II) a known driver of these pathologies. We investigated long-term Ang II type 1 receptor inhibition with valsartan on aortic function and structure in the Lewis polycystic kidney (LPK) rat model of CKD. METHODS: Mixed sex LPK and Lewis control (total n = 28) treated (valsartan 60 mg/kg/day p.o. from 4 to 18 weeks) and vehicle groups were studied...
2016: Journal of Vascular Research
https://www.readbyqxmd.com/read/27874273/association-testing-of-vasopressin-receptor-1a-microsatellite-polymorphisms-in-non-clinical-autism-spectrum-phenotypes
#9
Tanya L Procyshyn, Peter L Hurd, Bernard J Crespi
Variation in the arginine vasopressin receptor 1a (AVPR1a) gene is associated with autism risk in clinical populations and with variation in social behavior in non-clinical populations. However, whether a relationship exists between AVPR1a polymorphisms and non-clinical manifestations of autism spectrum phenotypes has not been established. In this study, 873 Caucasian university students were administered the Autism-spectrum Quotient (AQ) questionnaire and genotyped for the RS1 and RS3 microsatellites. A significant association was found between RS3 microsatellite variation and AQ score, with the long/long RS3 genotype associated with higher AQ score...
November 22, 2016: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/27870395/sex-differences-in-associations-of-arginine-vasopressin-and-oxytocin-with-resting-state-functional-brain-connectivity
#10
Leah H Rubin, Li Yao, Sarah K Keedy, James L Reilly, Jeffrey R Bishop, C Sue Carter, Hossein Pournajafi-Nazarloo, Lauren L Drogos, Carol A Tamminga, Godfrey D Pearlson, Matcheri S Keshavan, Brett A Clementz, Scot K Hill, Wei Liao, Gong-Jun Ji, Su Lui, John A Sweeney
Oxytocin (OT) and arginine vasopressin (AVP) exert robust and sexually dimorphic influences on cognition and emotion. How these hormones regulate relevant functional brain systems is not well understood. OT and AVP serum concentrations were assayed in 60 healthy individuals (36 women). Brain functional networks assessed with resting-state functional magnetic resonance imaging (rs-fMRI) were constructed with graph theory-based approaches that characterize brain networks as connected nodes. Sex differences were demonstrated in rs-fMRI...
January 2, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27855412/a-46-xx-ovotesticular-disorder-of-sex-development-likely-caused-by-a-steroidogenic-factor-1-nr5a1-variant
#11
Jonathan M Swartz, Ryan Ciarlo, Michael H Guo, Aser Abrha, Benjamin Weaver, David A Diamond, Yee-Ming Chan, Joel N Hirschhorn
BACKGROUND: A variant in steroidogenic factor-1 (SF-1, encoded by the gene NR5A1), p.Arg92Trp, has recently been reported in multiple families with 46,XX ovotesticular or testicular disorders of sex development (DSD). This amino acid change impacts the DNA-binding domain and perturbs gonadal differentiation pathways. METHODS: Whole-exome sequencing was performed on a 46,XX subject with ovotesticular DSD. RESULTS: Exome results identified a heterozygous NR5A1 variant, p...
November 18, 2016: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/27833161/12-months-metabolic-changes-among-gender-dysphoric-individuals-under-cross-sex-hormone-treatment-a-targeted-metabolomics-study
#12
Matthias K Auer, Alexander Cecil, Yasmin Roepke, Charlotte Bultynck, Charlotte Pas, Johannes Fuss, Cornelia Prehn, Rui Wang-Sattler, Jerzy Adamski, Günter K Stalla, Guy T'Sjoen
Metabolomic analyses in epidemiological studies have demonstrated a strong sexual dimorphism for most metabolites. Cross-sex hormone treatment (CSH) in transgender individuals enables the study of metabolites in a cross-gender setting. Targeted metabolomic profiling of serum of fasting transmen and transwomen at baseline and following 12 months of CSH (N = 20/group) was performed. Changes in 186 serum metabolites and metabolite ratios were determined by targeted metabolomics analysis based on ESI-LC-MS/MS...
November 11, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27807133/serotonin-and-arginine-vasopressin-mediate-sex-differences-in-the-regulation-of-dominance-and-aggression-by-the-social-brain
#13
Joseph I Terranova, Zhimin Song, Tony E Larkin, Nathan Hardcastle, Alisa Norvelle, Ansa Riaz, H Elliott Albers
There are profound sex differences in the incidence of many psychiatric disorders. Although these disorders are frequently linked to social stress and to deficits in social engagement, little is known about sex differences in the neural mechanisms that underlie these phenomena. Phenotypes characterized by dominance, competitive aggression, and active coping strategies appear to be more resilient to psychiatric disorders such as posttraumatic stress disorder (PTSD) compared with those characterized by subordinate status and the lack of aggressiveness...
November 15, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27804047/chimpanzee-personality-and-the-arginine-vasopressin-receptor-1a-genotype
#14
V A D Wilson, A Weiss, T Humle, N Morimura, T Udono, G Idani, T Matsuzawa, S Hirata, M Inoue-Murayama
Polymorphisms of the arginine vasopressin receptor 1a (AVPR1a) gene have been linked to various measures related to human social behavior, including sibling conflict and agreeableness. In chimpanzees, AVPR1a polymorphisms have been associated with traits important for social interactions, including sociability, joint attention, dominance, conscientiousness, and hierarchical personality dimensions named low alpha/stability, disinhibition, and negative emotionality/low dominance. We examined associations between AVPR1a and six personality domains and hierarchical personality dimensions in 129 chimpanzees (Pan troglodytes) living in Japan or in a sanctuary in Guinea...
March 2017: Behavior Genetics
https://www.readbyqxmd.com/read/27743766/genetic-variants-in-oxytocin-receptor-and-arginine-vasopressin-receptor-1a-are-associated-with-the-neural-correlates-of-maternal-and-paternal-affection-towards-their-child
#15
Shota Nishitani, Kazuya Ikematsu, Tsunehiko Takamura, Sumihisa Honda, Koh-Ichiro Yoshiura, Kazuyuki Shinohara
There is extensive evidence in animal studies, particularly in vole species (Microtus), that oxytocin (OT) receptor and arginine-vasopressin (AVP) receptor 1a is critical for the regulation of maternal and paternal behavior, respectively. Human studies have gained insight into the relationship between both hormone receptor gene variants and behavior, but not between the variants and the underlying brain activity. To study this, we investigated the association between neural activation of the anterior prefrontal cortex (APFC) in mothers and fathers in response to their child smiling video stimuli to induce the positive affect related to attachment with their child, and genetic variants of OT receptor (OXTR) and AVP receptor 1A (AVPR1A)...
January 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/27698435/sex-pheromone-recognition-and-characterization-of-three-pheromone-binding-proteins-in-the-legume-pod-borer-maruca-vitrata-fabricius-lepidoptera-crambidae
#16
Aping Mao, Jing Zhou, Bin Mao, Ya Zheng, Yufeng Wang, Daiqin Li, Pan Wang, Kaiyu Liu, Xiaoping Wang, Hui Ai
Pheromone-binding proteins (PBPs) are essential for the filtering, binding and transporting of sex pheromones across sensillum lymph to membrane-associated pheromone receptors of moths. In this study, three novel PBP genes were expressed in Escherichia coli to examine their involvement in the sex pheromone perception of Maruca vitrata. Fluorescence binding experiments indicated that MvitPBP1-3 had strong binding affinities with four sex pheromones. Moreover, molecular docking results demonstrated that six amino acid residues of three MvitPBPs were involved in the binding of the sex pheromones...
October 4, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27695817/impacts-of-supplemental-arginine-on-the-reproductive-performance-of-fall-lambing-ewes
#17
A R Crane, R R Redden, M L Van Emon, T L Neville, L P Reynolds, J S Caton, C S Schauer
In sheep, embryonic and fetal death during pregnancy can account for 25% to 50% of the total number of corpora lutea (and thus potential embryos). The objective of this study was to determine the effects of injectable and oral Arg supplementation provided for 14 d postbreeding on the reproductive performance of naturally stimulated fall lambing ewes. Rambouillet ewes ( = 210) were exposed to rams equipped with marking harnesses to induce cyclicity in April 2012. Upon estrus detection (d 0) ewes were randomly assigned, in a completely random design, to 1 of 6 treatments for a 14-d treatment period: injectable saline (CON; = 25), injectable Ala (IVALA; = 20), injectable Arg (IVARG; = 23), oral rumen-protected Arg (RPARG; = 20), oral fish meal (FM; = 24), or oral soybean meal (SBM; = 23)...
August 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27664190/sex-differences-in-adult-rat-insulin-and-glucose-responses-to-arginine-programming-effects-of-neonatal-separation-hypoxia-and-hypothermia
#18
Ashley L Gehrand, Brian Hoeynck, Mack Jablonski, Cole Leonovicz, Risheng Ye, Philipp E Scherer, Hershel Raff
Acute neonatal hypoxia, a common stressor, causes a spontaneous decrease in body temperature which may be protective. There is consensus that hypothermia should be prevented during acute hypoxia in the human neonate; however, this may be an additional stress with negative consequences. We hypothesize that maintaining body temperature during hypoxia in the first week of postnatal life alters the subsequent insulin, glucose, and glucagon secretion in adult rats. Rat pups were separated from their dam daily from postnatal days (PD) 2-6 for the following 90 min experimental treatments: (1) normoxic separation (control), (2) hypoxia (8% O2) allowing spontaneous hypothermia, (3) normoxic hypothermia with external cold, and (4) exposure to 8% O2 while maintaining body temperature using external heat...
September 2016: Physiological Reports
https://www.readbyqxmd.com/read/27641673/arginine-intake-is-associated-with-oxidative-stress-in-a-general-population
#19
Aline Martins de Carvalho, Antonio Anax Falcão de Oliveira, Ana Paula de Melo Loureiro, Gilka Jorge Figaro Gattás, Regina Mara Fisberg, Dirce Maria Marchioni
OBJECTIVE: The aim of this study was to assess the association between protein and arginine from meat intake and oxidative stress in a general population. METHODS: Data came from the Health Survey for Sao Paulo (ISA-Capital), a cross-sectional population-based study in Brazil (N = 549 adults). Food intake was estimated by a 24-h dietary recall. Oxidative stress was estimated by malondialdehyde (MDA) concentration in plasma. Analyses were performed using general linear regression models adjusted for some genetic, lifestyle, and biochemical confounders...
January 2017: Nutrition
https://www.readbyqxmd.com/read/27479314/arginines-plasma-concentration-and-oxidative-stress-in-mild-to-moderate-copd
#20
Angelo Zinellu, Alessandro Giuseppe Fois, Salvatore Sotgia, Elisabetta Sotgiu, Elisabetta Zinellu, Fabiana Bifulco, Arduino A Mangoni, Pietro Pirina, Ciriaco Carru
BACKGROUND: Elevated plasma concentrations of the endogenous nitric oxide synthase (NOS) inhibitor asymmetric dimethylarginine (ADMA) have been observed in respiratory conditions such as asthma and cystic fibrosis. Since oxidative stress has been shown to increase the activity of arginine methylating enzymes, hence increased ADMA synthesis, and to reduce ADMA degrading enzymes, hence increased ADMA concentrations, we assessed methylated arginines concentrations in chronic obstructive pulmonary disease (COPD), a disease characterized by increased oxidative stress...
2016: PloS One
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