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https://www.readbyqxmd.com/read/29784057/incidence-of-hypotension-according-to-the-discontinuation-order-of-vasopressors-in-the-management-of-septic-shock-a-prospective-randomized-trial-dovss
#1
Kyeongman Jeon, Jae-Uk Song, Chi Ryang Chung, Jeong Hoon Yang, Gee Young Suh
BACKGROUND: Vasopressin (AVP) is commonly added to norepinephrine (NE) to reverse shock in patients with sepsis. However, there are no data to support the appropriate strategy of vasopressor tapering in patients on concomitant NE and AVP who are recovering from septic shock. Therefore, the objective of this study was to evaluate the incidence of hypotension while tapering vasopressors in patients on concomitant NE and AVP recovering from septic shock. METHODS: Patients with septic shock receiving concomitant NE and AVP were randomly assigned to taper NE first (NE group) or AVP first (AVP group)...
May 21, 2018: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29778690/vasopressin-during-laparoscopic-myomectomy-does-it-really-extend-its-limits-%C3%A2-%C3%A2-%C3%A2
#2
Athanasios Protopapas, George Giannoulis, Ioannis Chatzipapas, Stavros Athanasiou, Themistoklis Grigoriadis, Nikolaos Kathopoulis, Dimitrios Vlachos, Dimitrios Zaharakis, Dimitrios Loutradis
STUDY OBJECTIVE: Τo investigate whether the use of vasopressin played an important role in the safe expansion of the indications of laparoscopic myomectomy in our practice. DESIGN: A retrospective comparison of prospectively collected data (Canadian Task Force Classification II2) SETTING: A Gynecologic Endoscopy Unit in a Tertiary University Hospital PATIENTS: 150 cases undergoing laparoscopic myomectomy (-ies), of whom 50 treated without the use of any vasoconstrictive agent (group1), and 100 treated with intraoperative intramyometrial injection of dilute vasopressin (20 IU/100mL normal saline) (group 2)...
May 17, 2018: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/29773577/determinants-and-outcomes-of-vasoplegia-following-left-ventricular-assist-device-implantation
#3
Kristen M Tecson, Brian Lima, Andy Y Lee, Fayez S Raza, Grace Ching, Cheng-Han Lee, Joost Felius, Ronald D Baxter, Sasha Still, Justin D G Collier, Shelley A Hall, Susan M Joseph
BACKGROUND: Vasoplegia is associated with adverse outcomes following cardiac surgery; however, its impact following left ventricular assist device implantation is largely unexplored. METHODS AND RESULTS: In 252 consecutive patients receiving a left ventricular assist device, vasoplegia was defined as the occurrence of normal cardiac function and index but with the need for intravenous vasopressors within 48 hours following surgery for >24 hours to maintain a mean arterial pressure >70 mm Hg...
May 17, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29772895/reversible-assembly-of-a-drug-peptide-into-amyloid-fibrils-a-dynamic-circular-dichroism-study
#4
Frédéric Gobeaux, Frank Wien
The common view on the amyloid fibril formation is that it is a multistep process that involves many oligomeric intermediate species, which leads to a high degree of polymorphism. This view derives from numerous kinetic studies whose vast majority was carried out with amyloid β fragments or other pathological amyloidogenic sequences. Yet, it is not clear whether the mechanisms inferred from these studies are universal and also apply to functional amyloids, in particular to peptide hormones which form reversible amyloid structures...
May 18, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29772591/-monitoring-and-modern-hemodynamic-concepts-in-cardiac-anesthesia
#5
Matthias Heringlake, Christian Schmidt, Sebastian Brandt
Patients undergoing cardiac surgery are growing older, present with more comorbidities, and are frequently scheduled for more complex and prolonged surgical procedures. Routine application of neurological as well as extended hemodynamic monitoring combined with goal-directed perioperative hemodynamic optimization, targeting optimization of systemic and cerebral oxygen balance, show promise to reduce postoperative complications and to improve mortality in this high risk population. Expert recommendations suggest to avoid synthetic colloids for fluid optimization...
May 2018: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
https://www.readbyqxmd.com/read/29772497/the-role-of-the-vasopressin-system-and-dopamine-d1-receptors-in-the-effects-of-social-housing-condition-on-morphine-reward
#6
M L Shawn Bates, Rebeca S Hofford, Michael A Emery, Paul J Wellman, Shoshana Eitan
BACKGROUND: The association with opioid-abusing individuals or even the perception of opioid abuse by peers are risk factors for the initiation and escalation of abuse. Similarly, we demonstrated that morphine-treated animals housed with only morphine-treated animals (referred to as morphine only) acquire morphine conditioned place-preference (CPP) more readily than morphine-treated animals housed with drug-naïve animals (referred to as morphine cage-mates). However, the molecular mechanisms underlying these effects are still elusive...
April 22, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29767278/the-hypothalamus-and-neuropsychiatric-disorders-psychiatry-meets-microscopy
#7
REVIEW
Hans-Gert Bernstein, Henrik Dobrowolny, Bernhard Bogerts, Gerburg Keilhoff, Johann Steiner
The past decades have witnessed an explosion of knowledge on brain structural abnormalities in schizophrenia and depression. Focusing on the hypothalamus, we try to show how postmortem brain microscopy has contributed to our understanding of mental disease-related pathologic alterations of this brain region. Gross anatomical abnormalities (volume changes of the third ventricle, the hypothalamus, and its nuclei) and alterations at the cellular level (loss of neurons, increased or decreased expression of hypothalamic peptides such as oxytocin, vasopressin, corticotropin-releasing hormone, and other regulatory factors as well as of enzymes involved in neurotransmitter and neuropeptide metabolism) have been reported in schizophrenia and/or depression...
May 16, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29765330/glial-cells-are-involved-in-ang-ii-induced-vasopressin-release-and-sodium-intake-in-awake-rats
#8
Atalia F L Flôr, José L de Brito Alves, Maria S França-Silva, Camille M Balarini, Lucila L K Elias, Silvia G Ruginsk, José Antunes-Rodrigues, Valdir A Braga, Josiane C Cruz
It is known that circulating angiotensin II (ANG-II) acts on the circumventricular organs (CVOs), which partially lack a normal blood-brain barrier, to stimulate pressor responses, vasopressin (AVP), and oxytocin (OT) secretion, as well as sodium and water intake. Although ANG-II type 1 receptors (AT1R ) are expressed in neurons and astrocytes, the involvement of CVOs glial cells in the neuroendocrine, cardiovascular and behavioral responses induced by central ANG II remains to be further elucidated. To address this question, we performed a set of experiments combining in vitro studies in primary hypothalamic astrocyte cells (HACc) and in vivo intracerebroventricular (icv) microinjections into the lateral ventricle of awake rats...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29763648/autism-spectrum-disorder-classification-diagnosis-and-therapy
#9
REVIEW
Samata R Sharma, Xenia Gonda, Frank I Tarazi
Autism Spectrum Disorder (ASD) refers to a group of neurodevelopmental disorders including autism, Asperger's syndrome (AS) and pervasive developmental disorder-not otherwise specified (PDD-NOS). The new diagnostic criteria of ASD focuses on two core domains: social communication impairment and restricted interests/repetitive behaviors. The prevalence of ASD has been steadily increasing over the past two decades, with current estimates reaching up to 1 in 36 children. Hereditary factors, parental history of psychiatric disorders, pre-term births, and fetal exposure to psychotropic drugs or insecticides have all been linked to higher risk of ASD...
May 12, 2018: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29756649/measuring-peripheral-oxytocin-and-vasopressin-in-nonhuman-primates
#10
REVIEW
Toni E Ziegler
Studying the neural and hormonal changes that modulate behavior is critical to understanding social relationships. Of particular interest is measuring oxytocin (OT) and arginine vasopressin (AVP) peripherally, and preferably, non-invasively, in nonhuman primates. Due to these peptides' neural origin and their stimulation of brain areas that influence social behavior, there has been debate whether peripheral measures in blood, urine, and saliva reflect central levels in the brain. This review elucidates the challenges of OT measurement and the solutions that provide valuable data on OT's role in social behavior...
May 14, 2018: American Journal of Primatology
https://www.readbyqxmd.com/read/29756050/effects-of-arginine-vasopressin-on-migration-and-respiratory-burst-activity-in-human-leukocytes
#11
Franz J Wiedermann, Kathrin Watzinger, Martina Stichlberger, Michael Joannidis, Christian Kaehler, Wolfgang Lederer
Arginine vasopressin can bind to high-affinity vasopressin V1a receptors in human leukocytes. This study aims to investigate the effects of arginine vasopressin on migration and chemotaxis of neutrophils and oxygen free radical release by human leukocytes. Neutrophils and monocytes were obtained from peripheral blood samples of ten healthy volunteers. Leukocyte migration was microscopically assessed in a modified 48-blind well microchemotaxis chamber, and respiratory burst activity was estimated using 2',7'-dichlorofluorescin diacetate in descending concentrations of arginine vasopressin...
2018: Open Medicine (Warsaw, Poland)
https://www.readbyqxmd.com/read/29751997/modulation-of-nesfatin-1-induced-cardiovascular-effects-by-the-central-cholinergic-system
#12
Begum Aydin, Gokcen Guvenc, Burcin Altinbas, Nasir Niaz, Murat Yalcin
Nesfatin-1, a peptide whose receptor is yet to be identified, has been shown to be involved in the modulation of feeding, stress, and metabolic responses. Recently, increasing evidence has supported a modulatory role of nesfatin-1 in cardiovascular activity. We have previously reported that nesfatin-1 causes an increase in blood pressure in normotensive and hypotensive rats by increasing plasma catecholamine, vasopressin, and renin levels. Recent reports suggest that nesfatin-1 may activate the central cholinergic system...
May 4, 2018: Neuropeptides
https://www.readbyqxmd.com/read/29748220/remote-left-ventricular-hemodynamic-monitoring-using-a-novel-intracardiac-sensor
#13
Thomas Mondritzki, Philip Boehme, Jason White, Jin Woo Park, Jessica Hoffmann, Julia Vogel, Peter Kolkhof, Stuart Walsh, Peter Sandner, Erwin Bischoff, Wilfried Dinh, Jörg Hüser, Hubert Truebel
BACKGROUND: Heart failure (HF) remains the most common reason for hospital admission in patients aged >65 years. Despite modern drug therapy, mortality and readmission rates for patients hospitalized with HF remain high. This necessitates further research to identify early patients at risk for readmission to limit hospitalization by timely adjustment of medical therapy. Implantable devices can monitor left ventricular (LV) hemodynamics and remotely and continuously detect the early signs of decompensation to trigger interventions and reduce the risk of hospitalization for HF...
May 2018: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29748077/vasopressin-in-cardiac-surgery-a-meta-analysis-of-randomized-controlled-trials
#14
Martin W Dünser, Olivier Bouvet, Hans Knotzer, Nish Arulkumaran, Ludhmila Abrahao Hajjar, Hanno Ulmer, Walter R Hasibeder
OBJECTIVE: To summarize the results of randomized controlled trials on the use of vasopressin as a vasopressor agent in cardiac surgery. DESIGN: Meta-analysis. PARTICIPANTS: Six-hundred-twenty-five adult patients undergoing elective or emergency cardiac surgery. INTERVENTIONS: Arginine vasopressin infusion (n = 313) or control/standard therapy (n = 312). MEASUREMENTS AND MAIN RESULTS: The rates of perioperative complications and postoperative mortality were used as primary and secondary endpoints, respectively...
April 3, 2018: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29745750/uplc-ms-ms-assay-development-for-estimation-of-mozavaptan-in-plasma-and-its-pharmacokinetic-study-in-rats
#15
Essam Ezzeldin, Gamal Ae Mostafa, Muzaffar Iqbal, Khalid A Al-Rashood, Yousef Asiri, Toqa El-Nahhas
AIM: Mozavaptan is a nonpeptide vasopressin receptor antagonist approved for the treatment of ectopic antidiuretic hormone secretion syndrome. METHODS & RESULTS: A simple, rapid and fully validated UPLC/MS-MS method was developed for the quantitation of mozavaptan in rat plasma. The chromatographic separation was conducted on an Acquity UPLC BEH™ C18 column with an optimum mobile phase of 10 mM ammonium acetate buffer and 0.1% formic acid in acetonitrile (30:70 v/v) at a flow rate of 0...
May 10, 2018: Bioanalysis
https://www.readbyqxmd.com/read/29745275/animal-models-of-social-stress-the-dark-side-of-social-interactions
#16
Marianela Masis-Calvo, Anna K Schmidtner, Vinícius E de Moura Oliveira, Cindy P Grossmann, Trynke R de Jong, Inga D Neumann
Social stress occurs in all social species, including humans, and shape both mental health and future interactions with conspecifics. Animal models of social stress are used to unravel the precise role of the main stress system - the HPA axis - on the one hand, and the social behavior network on the other, as these are intricately interwoven. The present review aims to summarize the insights gained from three highly useful and clinically relevant animal models of psychosocial stress: the resident-intruder (RI) test, the chronic subordinate colony housing (CSC), and the social fear conditioning (SFC)...
May 10, 2018: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/29743334/randomised-controlled-trial-of-high-versus-ad-libitum-water-intake-in-patients-with-autosomal-dominant-polycystic-kidney-disease-rationale-and-design-of-the-drink-feasibility-trial
#17
Ragada El-Damanawi, Michael Lee, Tess Harris, Laura B Mader, Simon Bond, Holly Pavey, Richard N Sandford, Ian B Wilkinson, Alison Burrows, Przemyslaw Woznowski, Yoav Ben-Shlomo, Fiona E Karet Frankl, Thomas F Hiemstra
INTRODUCTION: Vasopressin stimulates cyst growth in autosomal dominant polycystic kidney disease (ADPKD) leading to enlarged kidneys, hypertension and renal failure. Vasopressin receptor blockade slows disease progression. Physiological suppression of vasopressin secretion through high water (HW) intake could achieve a similar effect, necessitating a definitive large-scale trial of HW intake in ADPKD. The objective of the DRINK trial is to answer the key design and feasibility questions required to deliver a successful definitive water intake trial...
May 9, 2018: BMJ Open
https://www.readbyqxmd.com/read/29740065/comparison-of-first-line-and-second-line-terlipressin-versus-sole-norepinephrine-in-fulminant-ovine-septic-shock
#18
Tim G Kampmeier, Philip H Arnemann, Michael Hessler, Laura M Seidel, Karsten Becker, Andrea Morelli, Sebastian W Rehberg, Christian Ertmer
The Surviving Sepsis Guidelines suggest the use of vasopressin in case of catecholamine-refractory septic shock. Terlipressin (TP) as a V1 -selective AVP analogue is a potential alternative, though data regarding the first-line administration in septic shock are scarce. The present study explored and compared the effects of first-line vs. second-line infusion of TP or sole norepinephrine regarding organ function, fluid and norepinephrine requirements and survival in fulminant ovine septic shock. Peritoneal sepsis was induced in 23 ewes after laparotomy and faecal withdrawal from the caecum...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29738796/how-do-hypothalamic-nonapeptides-shape-youth-s-sociality-a-systematic-review-on-oxytocin-vasopressin-and-human-socio-emotional-development
#19
REVIEW
Nuno Torres, Daniel Martins, António J Santos, Diana Prata, Maria Veríssimo
The hypothalamic nonapeptides oxytocin and vasopressin are important modulators of socio-affective behaviours in a wide variety of animal species, including humans. Nevertheless, there is little research addressing their possible roles on socio-affective dimensions of human behaviour across development, during which considerable behavioural and physiological change occurs. Questions still remain about the extent to which findings from adults may directly apply to earlier phases of human development. In this article, we systematically summarize and discuss all existing studies investigating the developmental association of endogenous levels of hypothalamic neuropeptides oxytocin and vasopressin with human social behaviour or on its disruption in paediatric populations...
May 5, 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29733259/alcohol-consumption-in-meni%C3%A3-re-s-disease-patients
#20
Inés Sánchez-Sellero, Elena San-Román-Rodríguez, Sofía Santos-Pérez, Marcos Rossi-Izquierdo, Andrés Soto-Varela
OBJECTIVES: Dietary changes are useful in the management of Menière's disease; regarding alcohol, many clinicians recommend to avoid or reduce its consumption. However, there are no researches aimed to evaluate whether habitual alcohol consumption is more prevalent and/or more intense in patients with Menière's disease. METHODS: Cross-sectional, observational, case-control study, including three groups: patients with Menière's disease, patients with vertigo of other origins, and control subjects...
May 7, 2018: Nutritional Neuroscience
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