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https://www.readbyqxmd.com/read/29222858/obesity-lipid-profiles-and-oxidative-stress-in-children-after-liver-transplantation
#1
Piotr Czubkowski, Aldona Wierzbicka, Joanna Pawłowska, Irena Jankowska, Piotr Socha
PURPOSE: In adult liver transplant recipients, coronary artery disease and congestive heart failure are significant cause of morbidity and mortality. This may be attributed to the long-term immunosuppressive treatment, mostly with calcineurin inhibitors and steroids, which in long-term may be associated with hyperlipidemia, oxidative stress and cardiovascular complications. Since such data for children is sparse, the aim of this study was to assess the lipid and oxidative stress markers after pediatric liver transplantation (LTx)...
December 10, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/29222403/common-pathophysiology-in-multiple-mouse-models-of-pitt-hopkins-syndrome
#2
Courtney Thaxton, Alexander D Kloth, Ellen P Clark, Sheryl S Moy, Raymond A Chitwood, Benjamin D Philpot
Mutations or deletions of the transcription factor TCF4 are linked to Pitt-Hopkins syndrome (PTHS) and schizophrenia, suggesting that the precise pathogenic mutations dictate cellular, synaptic, and behavioral consequences. Here we generated two novel mouse models of PTHS-one that mimics the most common pathogenic TCF4 point mutation (human R580W, mouse R579W) and one that deletes three pathogenic arginines-and explored phenotypes of these lines alongside models of pan-cellular or CNS-specific heterozygous Tcf4 disruption...
December 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29201907/developmental-testicular-expression-cloning-and-characterization-of-rat-hdac6-in-silico
#3
Pratibha Verma, Omshree Shetty, Sweta Parab, Karen Menezes, Priyanka Parte
We had previously reported presence of histone deacetylase 6 (HDAC6) in sperm and demonstrated its tubulin deacetylase activity and role in sperm motility in rat. In the present study we report its abundant expression in testis, epididymis, accessory sex organs, brain, and adrenal. In the testis, HDAC6 transcript and protein were observed throughout development. We therefore cloned the gene from rat testis using primers for hdac6 (accession number XM_228753.8) in order to determine the role of acetylation/deacetylation in spermatogenesis...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29198107/fingerprint-analysis-moving-toward-multi-attribute-determination-via-individual-markers
#4
Erica Brunelle, Crystal Huynh, Eden Alin, Morgan Eldridge, Anh Minh Le, Lenka Halámková, Jan Halámek
Forensic science will be forever revolutionized if law enforcement can identify personal attributes of a person of interest solely from a fingerprint. For the past 2 years, the goal of our group was to establish a way to identify originator attributes, specifically biological sex, from a single analyte. To date, an enzymatic assay and two chemical assays have been developed for the analysis of multiple analytes. In this manuscript, two additional assays have been developed. This time, however, the assays utilize only one amino acid each...
December 2, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29184535/sex-differences-in-the-regulation-of-offensive-aggression-and-dominance-by-arginine-vasopressin
#5
REVIEW
Joseph I Terranova, Craig F Ferris, H Elliott Albers
Arginine-vasopressin (AVP) plays a critical role in the regulation of offensive aggression and social status in mammals. AVP is found in an extensive neural network in the brain. Here, we discuss the role of AVP in the regulation of aggression in the limbic system with an emphasis on the critical role of hypothalamic AVP in the control of aggression. In males, activation of AVP V1a receptors (V1aRs) in the hypothalamus stimulates offensive aggression, while in females activation of V1aRs inhibits aggression...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29163374/erratum-arginine-vasopressin-effects-on-subjective-judgments-and-neural-responses-to-same-and-other-sex-faces-in-men-and-women
#6
(no author information available yet)
[This corrects the article on p. 200 in vol. 8, PMID: 28871239.].
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29108272/up-regulated-expression-of-oxytocin-mrna-in-peripheral-blood-lymphocytes-from-first-episode-schizophrenia-patients
#7
Xiudeng Yang, Yamei Tang, Qinling Wei, Bing Lang, Huai Tao, Xianghui Zhang, Yong Liu, Aiguo Tang
Schizophrenia (SZ) is a severe neuropsychiatric disorder with significant social cognition impairment. Increasing evidence has suggested that neuropeptides oxytocin (OXT) and arginine vasopressin (AVP) are important mediators of complex social cognition and behavior associates with SZ. In the present study, forty-three first-episode schizophrenia (FES) patients and forty-seven healthy controls (HC) were included. The peripheral mRNA expression of OXT, OXT receptor (OXTR), AVP, AVP 1a receptor (AVPR1a) and CD38 was determined by real-time quantitative polymerase chain reaction (RT-qPCR)...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29100030/plasma-biomarker-discovery-for-early-chronic-kidney-disease-diagnosis-based-on-chemometric-approaches-using-lc-qtof-targeted-metabolomics-data
#8
S Benito, A Sánchez-Ortega, N Unceta, J J Jansen, G Postma, F Andrade, L Aldámiz-Echevarria, L M C Buydens, M A Goicolea, R J Barrio
Chronic kidney disease (CKD) is a progressive pathological condition in which renal function deteriorates in time. The first diagnosis of CKD is often carried out in general care attention by general practitioners by means of serum creatinine (CNN) levels. However, it lacks sensitivity and thus, there is a need for new robust biomarkers to allow the detection of kidney damage particularly in early stages. Multivariate data analysis of plasma concentrations obtained from LC-QTOF targeted metabolomics method may reveal metabolites suspicious of being either up-regulated or down-regulated from urea cycle, arginine methylation and arginine-creatine metabolic pathways in CKD pediatrics and controls...
October 29, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29081004/cardiovascular-autonomic-dysfunction-in-patients-with-idiopathic-diabetes-insipidus
#9
Mattia Barbot, Filippo Ceccato, Marialuisa Zilio, Nora Albiger, Riccardo Sigon, Giuseppe Rolma, Marco Boscaro, Carla Scaroni, Franca Bilora
INTRODUCTION: Central diabetes insipidus (DI) is a rare disease characterized by the excretion of excessive volumes of dilute urine due to reduced levels of the antidiuretic hormone arginine vasopressin (AVP), caused by an acquired or genetic defect in the neurohypophysis. The aim of this study was to identify any autonomic dysfunction (AD) in patients with DI as a possible cofactor responsible for their reportedly higher mortality. METHODS: The study involved 12 patients (6 females) with central idiopathic DI and a well-controlled electrolyte balance, and 12 controls matched for age, sex and cardiovascular risk factors, who were assessed using the tilt, lying-to-standing, hand grip, deep breath, Valsalva maneuver and Stroop tests...
October 28, 2017: Pituitary
https://www.readbyqxmd.com/read/29050286/a-prospective-study-of-serum-metabolites-and-glioma-risk
#10
Jiaqi Huang, Stephanie J Weinstein, Cari M Kitahara, Edward D Karoly, Joshua N Sampson, Demetrius Albanes
Malignant glioma is one of the most lethal adult cancers, yet its etiology remains largely unknown. We conducted a prospective serum metabolomic analysis of glioma based on 64 cases and 64 matched controls selected from Alpha-Tocopherol, Beta-Carotene Cancer Prevention (ATBC) Study. Median time from collection of baseline fasting serum to diagnosis was nine years (inter-decile range 3-20 years). LC/MS-MS identified 730 known metabolites, and conditional logistic regression models estimated odds ratios for one-standard deviation differences in log-metabolite signals...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29018407/dose-dependent-and-lasting-influences-of-intranasal-vasopressin-on-face-processing-in-men
#11
Daniel Price, Debra Burris, Anna Cloutier, Carol B Thompson, James K Rilling, Richmond R Thompson
Arginine vasopressin (AVP) and related peptides have diverse effects on social behaviors in vertebrates, sometimes promoting affiliative interactions and sometimes aggressive or antisocial responses. The type of influence, in at least some species, depends on social contexts, including the sex of the individuals in the interaction and/or on the levels of peptide within brain circuits that control the behaviors. To determine if AVP promotes different responses to same- and other-sex faces in men, and if those effects are dose dependent, we measured the effects of two doses of AVP on subjective ratings of male and female faces...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28992226/arginine-vasotocin-and-neuropeptide-y-vary-with-seasonal-life-history-transitions-in-garter-snakes
#12
Ashley R Lucas, Daelyn Y Richards, Lucy M Ramirez, Deborah I Lutterschmidt
Transitions between life-history stages are often accompanied by dramatic behavioral switches that result from a shift in motivation to pursue one resource over another. While the neuroendocrine mechanisms that regulate such behavioral transitions are poorly understood, arginine vasotocin (AVT) and neuropeptide Y (NPY) are excellent candidates because they modulate reproductive and feeding behavior, respectively. We asked if seasonal changes in AVT and NPY are concomitant with the seasonal migration to and from the feeding grounds in red-sided garter snakes (Thamnophis sirtalis parietalis)...
August 1, 2017: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/28940638/does-l-citrulline-supplementation-improve-exercise-blood-flow-in-older-adults
#13
Joaquin U Gonzales, Andrea Raymond, John Ashley, Youngdeok Kim
What is the central question of this study? Does short-term supplementation with l-citrulline in order to increase l-arginine improve exercise blood flow and peripheral dilatation responses to exercise in older adults? What is the main finding and its importance? l-Citrulline increased femoral blood flow by 11% and vascular conductance by 14% during lower-limb exercise in older men, whereas no changes were observed in older women. This modest improvement in bulk muscle blood flow in older men has implications for altering muscle metabolism that may result in enhanced exercise tolerance in older adults...
September 20, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28939132/peak-hyperammonemia-and-atypical-acute-liver-failure-the-eruption-of-an-urea-cycle-disorder-during-hyperemesis-gravidarum
#14
REVIEW
Nicolas Weiss, Fanny Mochel, Marika Rudler, Sophie Demeret, Pascal Lebray, Filomena Conti, Damien Galanaud, Chris Ottolenghi, Jean-Paul Bonnefont, Marc Dommergues, Jacques Bernuau, Dominique Thabut
BACKGROUND: Inborn urea cycle deficiencies are under-recognized metabolic causes of hyperammonaemia in adults. METHODS: A 28-year-old primigravida, 7-week pregnant woman affected by hyperemesis gravidarum developed acute liver injury and then acute liver failure (ALF) in less than 48 hours. RESULTS: Because the patient developed atypical features, especially mildly elevated serum transaminases contrasting with very high blood ammonia levels (281 μmol/l), concomitant with normal serum creatinine, an inborn error of metabolism was suspected...
September 19, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28921679/maternal-immune-activation-leads-to-increased-nnos-immunoreactivity-in-the-brain-of-postnatal-day-2-rat-offspring
#15
Jiaxian Zhang, Yu Jing, Hu Zhang, David K Bilkey, Ping Liu
Neuronal nitric oxide synthase (nNOS) is a key arginine metabolising enzyme in the brain, and nNOS-derived nitric oxide plays an important role in regulating glutamatergic neurotransmission. Nitric oxide and its related molecules are involved in the pathogenesis of schizophrenia, and human genetic studies have identified schizophrenia risk genes encoding nNOS. The present study systematically investigated how maternal immune activation (MIA; a risk factor for schizophrenia) induced by polyinosinic:polycytidylic acid affected nNOS-immunoreactivity in the brain of the resulting male and female offspring at the age of postnatal day (PND) 2...
September 16, 2017: Synapse
https://www.readbyqxmd.com/read/28911267/the-behavioral-and-molecular-evaluation-of-effects-of-social-instability-stress-as-a-model-of-stress-related-disorders-in-adult-female-rats
#16
Marta Maria Nowacka-Chmielewska, Daniela Kasprowska-Liśkiewicz, Jarosław Jerzy Barski, Ewa Obuchowicz, Andrzej Małecki
The study aimed to test the hypotheses that chronic social instability stress (CSIS) alters behavioral and physiological parameters and expression of selected genes important for stress response and social behaviors. Adult female Sprague-Dawley rats were subjected to the 4-week CSIS procedure, which involves unpredictable rotation between phases of isolation and overcrowding. Behavioral analyses (Experiment 1) were performed on the same rats before and after CSIS (n = 16) and physiological and biochemical measurements (Experiment 2) were made on further control (CON; n = 7) and stressed groups (CSIS; n = 8)...
September 15, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28877872/insulin-sensitivity-leptin-adiponectin-resistin-and-testosterone-in-adult-male-and-female-rats-after-maternal-neonatal-separation-and-environmental-stress
#17
Hershel Raff, Brian Hoeynck, Mack Jablonski, Cole Leonovicz, Jonathan M Phillips, Ashley L Gehrand
Care of premature infants often requires parental and caregiver separation particularly during hypoxic and hypothermic episodes. We have established a neonatal rat model of human prematurity involving maternal-neonatal separation and hypoxia with spontaneous hypothermia prevented with external heat. Adults previously exposed to these neonatal stressors show a sex difference in the insulin and glucose response to arginine stimulation suggesting a state of insulin resistance. The current study used this cohort of adult rats to evaluate insulin resistance (Homeostatic Model Assessment of Insulin Resistance [HOMA-IR]), plasma adipokines (reflecting insulin resistance states), and testosterone...
September 6, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28871239/arginine-vasopressin-effects-on-subjective-judgments-and-neural-responses-to-same-and-other-sex-faces-in-men-and-women
#18
James K Rilling, Ting Li, Xiangchuan Chen, Pritam Gautam, Ebrahim Haroon, Richmond R Thompson
Arginine vasopressin (AVP) influences social and emotional behaviors across a wide range of species. In humans, intranasal AVP has been previously shown to alter physiological responses to and subjective judgments of same-sex faces in both men and women. The present study attempted to elucidate the neural mechanism for these effects by randomizing 40 healthy men and 40 healthy women to treatment with either 40 IU intranasal AVP or a saline placebo approximately 30 min before imaging their brain function with fMRI as they viewed same and other-sex faces...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28803020/a-missense-mutation-in-pfas-phosphoribosylformylglycinamidine-synthase-is-likely-causal-for-embryonic-lethality-associated-with-the-mh1-haplotype-in-montb%C3%A3-liarde-dairy-cattle
#19
Pauline Michot, Sébastien Fritz, Anne Barbat, Mekki Boussaha, Marie-Christine Deloche, Cécile Grohs, Chris Hoze, Laurène Le Berre, Daniel Le Bourhis, Olivier Desnoes, Pascal Salvetti, Laurent Schibler, Didier Boichard, Aurélien Capitan
A candidate mutation in the sex hormone binding globulin gene was proposed in 2013 to be responsible for the MH1 recessive embryonic lethal locus segregating in the Montbéliarde breed. In this follow-up study, we excluded this candidate variant because healthy homozygous carriers were observed in large-scale genotyping data generated in the framework of the genomic selection program. We fine mapped the MH1 locus in a 702-kb interval and analyzed genome sequence data from the 1,000 bull genomes project and 54 Montbéliarde bulls (including 14 carriers and 40 noncarriers)...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28759308/vasopressin-deletion-is-associated-with-sex-specific-shifts-in-the-gut-microbiome
#20
Christopher T Fields, Benoit Chassaing, Matthew J Paul, Andrew T Gewirtz, Geert J de Vries
Brattleboro rats harbor a spontaneous deletion of the arginine-vasopressin (Avp) gene. In addition to diabetes insipidus, these rats exhibit low levels of anxiety and depressive behaviors. Recent work on the gut-brain axis has revealed that gut microbiota can influence anxiety behaviors. Therefore, we studied the effects of Avp gene deletion on gut microbiota. Since Avp gene expression is sexually different, we also examined how Avp deletion affects sex differences in gut microbiota. Males and females show modest but differentiated shifts in taxa abundance across 3 separate Avp deletion genotypes: wildtype (WT), heterozygous (Het) and AVP-deficient Brattleboro (KO) rats...
July 31, 2017: Gut Microbes
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