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Oxytocin

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https://www.readbyqxmd.com/read/28527266/-risk-factors-associated-with-the-development-of-perinatal-asphyxia-in-neonates-at-the-hospital-universitario-del-valle-cali-colombia-2010-2011
#1
Javier Torres-Muñoz, Christian Rojas, Diana Mendoza-Urbano, Darly Marín-Cuero, Sandra Orobio, Carlos Echandía
INTRODUCTION: Perinatal asphyxia is one of the main causes of perinatal mortality and morbidity worldwide and it generates high costs for health systems; however, it has modifiable risk factors. OBJECTIVE: To identify the risk factors associated with the development of perinatal asphyxia in newborns at Hospital Universitario del Valle, Cali, Colombia. MATERIALS AND METHODS: Incident cases and concurrent controls were examined. Cases were defined as newborns with moderate to severe perinatal asphyxia who were older than or equal to 36 weeks of gestational age, needed advanced resuscitation and presented one of the following: early neurological disorders, multi-organ commitment or a sentinel event...
April 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28526519/oxytocin-administration-during-spontaneous-labor-guidelines-for-clinical-practice-chapter-4-oxytocin-efficiency-according-to-implementation-in-insufficient-spontaneous-labor
#2
Bénédicte Coulm, Véronique Tessier
AIM: To describe the optimal procedures for administering oxytocin in cases of insufficient uterine contractility during spontaneous labor and the maternal and fetal monitoring to accompany it. METHODS: Systematic review of the literature by consultation of the Medline, Micromedex, and Cochrane databases, and international guidelines. RESULTS: Oxytocin must be administered only in hospital settings and monitored according to a written departmental protocol...
May 16, 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28526450/the-association-of-single-nucleotide-polymorphisms-in-the-oxytocin-receptor-and-g-protein-coupled-receptor-kinase-6-grk6-genes-with-oxytocin-dosing-requirements-and-labor-outcomes
#3
Chad A Grotegut, Emily Ngan, Melanie E Garrett, Marie Lynn Miranda, Allison E Ashley-Koch, Geeta K Swamy
BACKGROUND: Oxytocin is a potent uterotonic agent that is widely used for induction and augmentation of labor. Oxytocin has a narrow therapeutic index and the optimal dosing for any individual woman varies widely. OBJECTIVE: The objective of this study was to determine if genetic variation in the oxytocin receptor (OXTR) or in the gene encoding G protein-coupled receptor kinase 6 (GRK6), which regulates desensitization of the OXTR, could explain variation in oxytocin dosing and labor outcomes among women being induced near term...
May 16, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28526143/uterotonic-medications-oxytocin-methylergonovine-carboprost-misoprostol
#4
REVIEW
Cristianna Vallera, Lynn O Choi, Catherine M Cha, Richard W Hong
Uterine atony is a common cause of primary postpartum hemorrhage, which remains a major cause of pregnancy-related mortality for women worldwide. Oxytocin, methylergonovine, carboprost, and misoprostol are commonly used to restore uterine tone. Oxytocin is the first-line agent. Methylergonovine and carboprost are both highly effective second-line agents with severe potential side effects. Recent studies have called into question the effectiveness of misoprostol as an adjunct to other uterotonic agents, but it remains a useful therapeutic in resource-limited practice environments...
June 2017: Anesthesiology Clinics
https://www.readbyqxmd.com/read/28524009/a-novel-polymorphism-in-the-oxytocin-receptor-encoding-gene-oxtr-affects-milk-fatty-acid-composition-in-italian-mediterranean-river-buffalo
#5
Gianfranco Cosenza, Nicolò P P Macciotta, Anna Nudda, Angelo Coletta, Luigi Ramunno, Alfredo Pauciullo
The oxytocin receptor, also known as OXTR, is a protein which functions as receptor for the hormone and neurotransmitter oxytocin and the complex oxytocin-oxytocin receptor plays an important role in the uterus during calving. A characterisation of the river buffalo OXTR gene, amino acid sequences and phylogenetic analysis is presented. The DNA regions of the OXTR gene spanning exons 1, 2 and 3 of ten Mediterranean river buffalo DNA samples were analysed and 7 single nucleotide polymorphisms were found. We focused on the g...
May 2017: Journal of Dairy Research
https://www.readbyqxmd.com/read/28512793/5-azacytidine-mediated-hmsc-behaviour-on-electrospun-scaffolds-for-skeletal-muscle-regeneration
#6
Ines Fasolino, Vincenzo Guarino, Valentina Cirillo, Luigi Ambrosio
Incomplete regeneration after trauma or muscular dysfunction is a common problem in muscle replacement therapies. Recent approaches in tissue engineering allow for the replication of skeletal muscle structure and function in vitro and in vivo by molecular therapies and implantable scaffolds which properly address muscle cells towards myotube differentiation and maturation. Here, we investigate the in vitro response of human Mesenchymal Stem Cells (hMSC) on electrospun fibres made of Polycaprolactone (PCL) in the presence of 5-azacytidine (5-AZA) to evaluate how fibrous network may influence the therapeutic effect of drug during in vitro myogenesis...
May 16, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28512038/involvement-of-the-oxytocin-system-in-the-nucleus-accumbens-in-the-regulation-of-juvenile-social-novelty-seeking-behavior
#7
Caroline J W Smith, Jazmin N Mogavero, Maxwell T Tulimieri, Alexa H Veenema
Exploration of novel environments, stimuli, and conspecifics is highly adaptive during the juvenile period, as individuals transition from immaturity to adulthood. We recently showed that juvenile rats prefer to interact with a novel individual over a familiar cage mate. However, the neural mechanisms underlying this juvenile social novelty-seeking behavior remain largely unknown. One potential candidate is the oxytocin (OXT) system, given its involvement in various motivated social behaviors. Here, we show that administration of the specific oxytocin receptor antagonist desGly-NH2,d(CH2)5-[Tyr(Me)(2),Thr(4)]OVT reduces social novelty seeking-behavior in juvenile male rats when injected into the nucleus accumbens (10ng/0...
May 13, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28511728/birth-weight-interacts-with-a-functional-variant-of-the-oxytocin-receptor-gene-oxtr-to-predict-executive-functioning-in-children
#8
Mark Wade, Heather Prime, Thomas J Hoffmann, Louis A Schmidt, Thomas G O'Connor, Jennifer M Jenkins
Genetic variation in the oxytocin receptor gene (OXTR) is associated with several psychiatric conditions characterized by deficits in executive functioning (EF). A specific OXTR variant, rs2254298, has previously been associated with brain functioning in regions implicated in EF. Moreover, birth weight variation across the entire range is associated with individual differences in cortical structure and function that underlie EF. This is the first study to examine the main and interactive effect between rs2254298 and birth weight on EF in children...
May 17, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/28511197/preclinical-toxicity-screening-of-intrathecal-oxytocin-in-rats-and-dogs-erratum
#9
(no author information available yet)
No abstract text is available yet for this article.
June 2017: Anesthesiology
https://www.readbyqxmd.com/read/28508553/a-targeted-proteomic-assay-for-the-measurement-of-plasma-proteoforms-related-to-human-aging-phenotypes
#10
Richard D Semba, Pingbo Zhang, Min Zhu, Elisa Fabbri, Marta Gonzalez-Freire, Ruin Moaddel, Minghui Geng-Spyropoulos, Luigi Ferrucci
Circulating polypeptides and proteins have been implicated in reversing or accelerating aging phenotypes, including growth/differentiation factor 8 (GDF8), GDF11, eotaxin, and oxytocin. These proteoforms, which are defined as the protein products arising from a single gene due to alternative splicing and post-translational modifications, have been challenging to study. Both GDF8 and GDF11 have known antagonists such as follistatin (FST), and WAP, Kazal, immunoglobulin, Kunitz and NTR domain-containing proteins 1 and 2 (WFIKKN1, WFIKKN2)...
May 16, 2017: Proteomics
https://www.readbyqxmd.com/read/28507580/impact-of-antenatal-oxytocin-infusion-on-neonatal-respiratory-morbidity-associated-with-elective-cesarean-section
#11
Ibrahim Abdelazim, Mohamed M M Farghali, Assem A M Elbiaa, Khaled M Abdelrazak, Mohamed Hussain, Amr H Yehia, Mona Rashad
INTRODUCTION: This study was designed to estimate respiratory morbidity associated with elective cesarean section (ECS) and to determine the effect of antenatal oxytocin exposure on this morbidity. MATERIAL AND METHODS: Nine hundred and sixty-five neonates ≥ 37 weeks' gestation delivered by cesarean section during 1 year were included in this retrospective study and classified into two groups according to oxytocin exposure before cesarean deliveries. Respiratory morbidity for each group was recorded and statistically analyzed...
April 1, 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28506922/oxytocin-effects-in-schizophrenia-reconciling-mixed-findings-and-moving-forward
#12
REVIEW
Ellen R Bradley, Joshua D Woolley
Schizophrenia is a severe mental illness that causes major functional impairment. Current pharmacologic treatments are inadequate, particularly for addressing negative and cognitive symptoms of the disorder. Oxytocin, a neuropeptide known to moderate social behaviors, has been investigated as a potential therapeutic for schizophrenia in recent years. Results have been decidedly mixed, leading to controversy regarding oxytocin's utility. In this review, we outline several considerations for interpreting the extant literature and propose a focused agenda for future work that builds on the most compelling findings regarding oxytocin effects in schizophrenia to date...
May 12, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28506310/unexpected-evolutionarily-conserved-rapid-effects-of-viral-infection-on-oxytocin-receptor-and-tgf-%C3%AE-psmad3
#13
Yutong Liu, Irina Conboy
BACKGROUND: shRNA lentiviral vectors are extensively used for gene knockdowns in mammalian cells, and non-target shRNAs typically are considered the proper experimental control for general changes caused by RNAi. However, the effects of non-target lentivirus controls on the modulation of cell signaling pathways remain largely unknown. In this study, we evaluated the effect of control lentiviral transduction on oxytocin receptor (OXTR) expression through the ERK/MAPK pathway in mouse and human skeletal muscle cells, on myogenic activity, and in vivo on mouse muscle regeneration...
May 15, 2017: Skeletal Muscle
https://www.readbyqxmd.com/read/28505537/investigation-of-pyrazolo-sulfonamides-as-putative-small-molecule-oxytocin-receptor-agonists
#14
Timothy A Katte, Tristan A Reekie, Eryn L Werry, William T Jorgensen, Rochelle Boyd, Erick C N Wong, Damien W Gulliver, Mark Connor, Michael Kassiou
The neuropeptide oxytocin has been implicated in multiple central nervous system functions in mammalian species. Increased levels have been reported to improve trust, alleviate symptoms related to autism and social phobias, and reduce social anxiety. Hoffman-La Roche published a patent claiming to have found potent small molecule oxytocin receptor agonists, smaller than the first non-peptide oxytocin agonist reported, WAY 267,464. We selected two of the more potent compounds from the patent and, in addition, created WAY 267,464 hybrid structures and determined their oxytocin and vasopressin receptor activity...
May 4, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28505479/women-s-self-reported-experience-of-unplanned-caesarean-section-results-of-a-swedish-study
#15
Annika Karlström
BACKGROUND: women´s experience of emergency caesarean section is often described as less positive compared to a vaginal birth or a planned caesarean section. Midwifery care for women where deviations from a normal birth process are present is a challenge. The aim of study was to compare self-reported birth outcomes for women undergoing birth through spontaneous onset of labour between those who actually had a vaginal birth and those who eventually had an emergency caesarean section. DESIGN AND SETTING: the study was part of a prospective longitudinal cohort study of parents' experiences, attitudes, and beliefs related to childbirth...
April 27, 2017: Midwifery
https://www.readbyqxmd.com/read/28499504/williams-syndrome-deletions-and-duplications-genetic-windows-to-understanding-anxiety-sociality-autism-and-schizophrenia
#16
REVIEW
Bernard J Crespi, Tanya L Procyshyn
We describe and evaluate an integrative hypothesis for helping to explain the major neurocognitive features of individuals with Williams syndrome region deletions and duplications. First, we demonstrate how the cognitive differences between Williams syndrome individuals, individuals with duplications of this region, and healthy individuals parallel the differences between individuals subject to effects of increased or decreased oxytocin. Second, we synthesize evidence showing that variation in expression of the gene GTF2I (General Transcription Factor II-I) underlies the primary social phenotypes of Williams syndrome and that common genetic variation in GTF2I mediates oxytocin reactivity, and its correlates, in healthy populations...
May 10, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28499211/oxytocin-receptor-and-g-protein-polymorphisms-in-patients-with-depression-and-separation-anxiety
#17
Barbara Costa, Stefano Pini, David S Baldwin, Derrick Silove, Vijaya Manicavasagar, Marianna Abelli, Fabio Coppedè, Claudia Martini
BACKGROUND: The impact of combined variants of Oxytocin Receptor (OXTR) and G protein β3 subunit genes was investigated in relation to retrospective reports of childhood as well as contemporary adult separation anxiety (SA), based on evidence of a β/γ dimer-mediated signaling for OXTR. METHODS: A case-control association study (225 healthy adults and 188 outpatients with depression) was performed to establish Risk-Combined Genotype (RCG) of the studied variants (OXTR rs53576 and the functional Gβ3 subunit rs5443)...
March 27, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28498927/efficacy-and-safety-of-carbetocin-given-as-an-intravenous-bolus-compared-with-short-infusion-for-caesarean-section-double-blind-double-dummy-randomized-controlled-non-inferiority-trial
#18
S Dell-Kuster, I Hoesli, O Lapaire, E Seeberger, L A Steiner, H C Bucher, T Girard
Background: Carbetocin is a synthetic oxytocin-analogue, which should be administered as bolus according to manufacturer's recommendations. A higher speed of oxytocin administration leads to increased cardiovascular side-effects. It is unclear whether carbetocin administration as short infusion has the same efficacy on uterine tone compared with bolus administration and whether haemodynamic parameters differ. Methods: In this randomized, double-blind, non-inferiority trial, women undergoing planned or unplanned Caesarean section (CS) under regional anaesthesia received a bolus and a short infusion, only one of which contained carbetocin 100 mcg (double dummy)...
May 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28493233/neurite-outgrowth-stimulated-by-oxytocin-is-modulated-by-inhibition-of-the-calcium-voltage-gated-channels
#19
M Zatkova, A Reichova, Z Bacova, V Strbak, A Kiss, J Bakos
Neuropeptide oxytocin contributes to the regulation of the neuron differentiation and cell morphology. However, the precise mechanisms are not yet fully understood. Oxytocin receptor function and its coupling to calcium entry are obvious objects of interest in relation to the neuron morphology. Postsynaptic scaffolding proteins including SHANK proteins interact with other synaptic molecules and change dendritic morphology. SH-SY5Y neuroblastoma cell line represents a useful neurobiological in vitro model to study the short-term oxytocin effects on neurite outgrowth and underlying mechanisms...
May 10, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28492104/oxytocin-and-vasopressin-powerful-regulators-of-social-behavior
#20
Heather K Caldwell
For many, the terms oxytocin and vasopressin immediately evoke images of animals interacting with one another, as both of these neuropeptides have been implicated as being part of the neurochemical "glue" that socially binds animals. However, social environments and social interactions are complex and include behaviors that bring animals together as well as behaviors that keep animals apart. It is at the intersection of social context, social experience, and an individual's sex that oxytocin and vasopressin act to modulate social behavior and social cognition...
May 1, 2017: Neuroscientist: a Review Journal Bringing Neurobiology, Neurology and Psychiatry
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