keyword
MENU ▼
Read by QxMD icon Read
search

Vasopressin

keyword
https://www.readbyqxmd.com/read/28340511/quantitative-mapping-reveals-age-and-sex-differences-in-vasopressin-but-not-oxytocin-immunoreactivity-in-the-rat-social-behavior-neural-network
#1
Brett T DiBenedictis, Elizabeth R Nussbaum, Harry K Cheung, Alexa H Veenema
The neuropeptides vasopressin (AVP) and oxytocin (OT) have been implicated in the regulation of numerous social behaviors in adult and juvenile animals. AVP and OT signaling predominantly occur within a circuit of interconnected brain regions known collectively as the "social behavior neural network" (SBNN). Importantly, AVP and OT signaling within the SBNN has been shown to differentially regulate diverse social behaviors, depending on the age and/or sex of the animal. We hypothesized that variation in the display of these behaviors is due in part to age and sex differences in AVP and OT synthesis within the SBNN...
March 24, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28333757/the-septic-shock-3-0-definition-and-trials-a-vasopressin-and-septic-shock-trial-experience
#2
James A Russell, Terry Lee, Joel Singer, John H Boyd, Keith R Walley
OBJECTIVES: The Septic Shock 3.0 definition could alter treatment comparisons in randomized controlled trials in septic shock. Our first hypothesis was that the vasopressin versus norepinephrine comparison and 28-day mortality of patients with Septic Shock 3.0 definition (lactate > 2 mmol/L) differ from vasopressin versus norepinephrine and mortality in Vasopressin and Septic Shock Trial. Our second hypothesis was that there are differences in plasma cytokine levels in Vasopressin and Septic Shock Trial for lactate less than or equal to 2 versus greater than 2 mmol/L...
March 22, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28330766/water-metabolism-dysfunction-via-renin-angiotensin-system-activation-caused-by-liver-damage-in-mice-treated-with-microcystin-rr
#3
Qing Zhong, Feng Sun, Weiguang Wang, Wenqing Xiao, Xiaoni Zhao, Kangding Gu
Microcystins (MCs) are a group of monocyclic heptapeptide toxins that have been shown to act as potent hepatotoxins. However, the observed symptoms of water metabolism disruption induced by microcystin-RR (MC-RR) or MCs have rarely been reported, and a relatively clear mechanism has not been identified. In the present study, male mice were divided into 4 groups (A: 140μg/kg, B: 70μg/kg,C: 35μg/kg, and D: 0μg/kg) and administered MC-RR daily for a month. On day 8 of treatment, an increase in water intake and urine output was observed in the high-dose group compared with the control, and the symptoms worsened with the repeated administration of the toxin until day 30...
March 19, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28326667/the-v2-receptor-antagonist-tolvaptan-raises-cytosolic-calcium-and-prevents-aqp2-trafficking-and-function-an-in-vitro-and-in-vivo-assessment
#4
Grazia Tamma, Annarita Di Mise, Marianna Ranieri, Ari Geller, Roberto Tamma, Alberta Zallone, Giovanna Valenti
Tolvaptan, a selective vasopressin V2 receptor antagonist, is a new generation diuretic. Its clinical efficacy is in principle due to impaired vasopressin-regulated water reabsorption via aquaporin-2 (AQP2). Nevertheless, no direct in vitro evidence that tolvaptan prevents AQP2-mediated water transport, nor that this pathway is targeted in vivo in patients with syndrome of inappropriate antidiuresis (SIAD) has been provided. The effects of tolvaptan on the vasopressin-cAMP/PKA signalling cascade were investigated in MDCK cells expressing endogenous V2R and in mouse kidney...
March 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28325880/balancing-selection-maintains-polymorphisms-at-neurogenetic-loci-in-field-experiments
#5
Eija Lonn, Esa Koskela, Tapio Mappes, Mikael Mokkonen, Angela M Sims, Phillip C Watts
Most variation in behavior has a genetic basis, but the processes determining the level of diversity at behavioral loci are largely unknown for natural populations. Expression of arginine vasopressin receptor 1a (Avpr1a) and oxytocin receptor (Oxtr) in specific regions of the brain regulates diverse social and reproductive behaviors in mammals, including humans. That these genes have important fitness consequences and that natural populations contain extensive diversity at these loci implies the action of balancing selection...
March 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28325873/priming-gpcr-signaling-through-the-synergistic-effect-of-two-g-proteins
#6
Tejas M Gupte, Rabia U Malik, Ruth F Sommese, Michael Ritt, Sivaraj Sivaramakrishnan
Although individual G-protein-coupled receptors (GPCRs) are known to activate one or more G proteins, the GPCR-G-protein interaction is viewed as a bimolecular event involving the formation of a ternary ligand-GPCR-G-protein complex. Here, we present evidence that individual GPCR-G-protein interactions can reinforce each other to enhance signaling through canonical downstream second messengers, a phenomenon we term "GPCR priming." Specifically, we find that the presence of noncognate Gq protein enhances cAMP stimulated by two Gs-coupled receptors, β2-adrenergic receptor (β2-AR) and D1 dopamine receptor (D1-R)...
March 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28323287/experimental-medication-treatment-approaches-for-depression
#7
REVIEW
D F Ionescu, G I Papakostas
Depression is one of the most common psychiatric conditions. Symptoms can lead to significant disability, which result in impairments in overall quality of life. Though there are many approved antidepressant treatments for depression-including selective serotonin reuptake inhibitors, tricyclic antidepressants and monoamine oxidase inhibitors-about a third of patients do not respond to these medications. Therefore, it is imperative for drug discovery to continue towards the development of novel and rapidly acting compounds, especially for patients with treatment-resistant depression...
March 21, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28319910/the-role-of-vasopressin-and-the-vasopressin-type-v1a-receptor-agonist-selepressin-in-septic-shock
#8
REVIEW
Antonio F Saad, Marc O Maybauer
Septic shock remains one of the major causes of morbidity and mortality in the critically ill. Despite early goal therapy and administration of cathecholaminergic agents, up to 30% of patients succumb to the disease. In this manuscript, we first summarize the standard of care of patients with septic shock and current guidelines. We review the physiologic role of vasopressin and its role in septic shock management. We then review the most up-to-date evidence on the potential role of V1a receptor agonists such as Selepressin, in septic shock...
March 15, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28319494/heparin-binding-protein-hbp-a-causative-marker-and-potential-target-for-heparin-treatment-of-human-sepsis-induced-acute-kidney-injury
#9
Jane Fisher, James A Russell, Peter Bentzer, Devyn Parsons, Stefano Secchia, Matthias Mörgelin, Keith R Walley, John H Boyd, Adam Linder
RATIONALE: Sepsis-induced acute kidney injury (AKI) is a common condition with high morbidity and mortality. Neutrophil-derived heparin-binding protein (HBP) induces vascular leakage and is a promising biomarker of sepsis-induced organ dysfunction. It remains unknown if HBP is prognostic of AKI in septic shock and if HBP could play a role in the pathophysiology of sepsis-induced AKI. OBJECTIVES: To determine the association of plasma HBP levels with development of AKI, investigate the role of HBP in the pathophysiology of sepsis-induced AKI, and test the effect of blocking HBP using heparin derivatives...
March 17, 2017: Shock
https://www.readbyqxmd.com/read/28316971/exercise-associated-hyponatremia-2017-update
#10
REVIEW
Tamara Hew-Butler, Valentina Loi, Antonello Pani, Mitchell H Rosner
Exercise-associated hyponatremia (EAH) was initially described in the 1980s in endurance athletes, and work done since then has conclusively identified that overdrinking beyond thirst and non-osmotic arginine vasopressin release are the most common etiologic factors. In recent years, EAH has been described in a broader variety of athletic events and also has been linked to the development of rhabdomyolysis. The potential role of volume and sodium depletion in a subset of athletes has also been described. This review focuses on the most recent literature in the field of EAH and summarizes key new findings in the epidemiology, pathophysiology, treatment, and prevention of this condition...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28303751/vasoactive-peptides-associate-with-treatment-outcome-ofbevacizumab-containing-therapy-in-metastatic-colorectal-cancer
#11
Helga Hagman, Pär-Ola Bendahl, Olle Melander, Jan Sundberg, Anders Johnsson, Mattias Belting
BACKGROUND: Hypertension is a common early adverse event of anti-angiogenic treatment of cancer and may associate with treatment response. However, blood pressure measurement as a surrogate response biomarker has methodological limitations, and predictive biomarkers of angiogenesis inhibitors are lacking. In disease associated with hypertension, vasoactive peptides have been linked to cardiovascular pressure load. Here, we have explored potential associations between circulating levels of vasoactive peptides and tumor response during bevacizumab-containing treatment of colorectal cancer...
March 17, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28303369/clinical-aspects-of-changes-in-water-and-sodium-homeostasis-in-the-elderly
#12
REVIEW
Christian A Koch, Tibor Fulop
The population of elderly individuals is increasing worldwide. With aging, various hormonal and kidney changes occur, both affecting water homeostasis. Aging is a risk factor for chronic kidney disease (CKD) and many features of CKD are reproduced in the aging kidney. Dehydration and hyperosmolarity can be triggered by diminished thirst perception in this population. Elderly with dementia are especially susceptible to abnormalities of their electrolyte and body water homeostasis and should be (re-)assessed for polypharmacy...
March 16, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28302292/short-term-effects-of-tolvaptan-in-patients%C3%A2-with-acute-heart-failure-and%C3%A2-volume-overload
#13
Marvin A Konstam, Michael Kiernan, Arthur Chandler, Ravi Dhingra, Freny Vaghaiwalla Mody, Howard Eisen, W Herbert Haught, Lynne Wagoner, Divya Gupta, Richard Patten, Paul Gordon, Kenneth Korr, Russell Fileccia, Susan J Pressler, Douglas Gregory, Patricia Wedge, Douglas Dowling, Matthew Romeling, Jeremy M Konstam, Joseph M Massaro, James E Udelson
BACKGROUND: In patients with acute heart failure (AHF), dyspnea relief is the most immediate goal. Renal dysfunction, diuretic resistance, and hyponatremia represent treatment impediments. OBJECTIVES: It was hypothesized that the addition of tolvaptan to a background diuretic improved dyspnea early in patients selected for an enhanced vasopressin antagonism response. METHODS: In a double-blind trial, patients were randomized to tolvaptan 30 mg/day or placebo...
March 21, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28298759/effect-of-magnesium-sulfate-and-clonidine-in-attenuating-hemodynamic-response-to-pneumoperitoneum-in-laparoscopic-cholecystectomy
#14
Shruthi P Kamble, Yatish Bevinaguddaiah, Dinesh Chillkunda Nagaraja, Vinayak S Pujar, Tejesh C Anandaswamy
BACKGROUND: Pneumoperitoneum in laparoscopic procedures is associated with hemodynamic response, due to the release of catecholamines and vasopressin. Magnesium and clonidine have been used to attenuate such hemodynamic responses by inhibiting release of these mediators. We conducted this randomized, double-blinded study to assess which of the two attenuates hemodynamic response better. MATERIALS AND METHODS: Ninety American Society of Anesthesiologists health status Classes I and II patients posted for elective laparoscopic cholecystectomy were randomized into three groups of thirty patients each...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298358/identification-of-%C3%AE-catenin-interacting-proteins-in-nuclear-fractions-of-native-rat-collecting-duct-cells
#15
Jacqueline R Hwang, Chung-Lin Chou, Barbara Medvar, Mark A Knepper, Hyun Jun Jung
The gene encoding the aquaporin-2 water channel is regulated transcriptionally in response to vasopressin. In the renal collecting duct, vasopressin stimulates the nuclear translocation and phosphorylation (at Ser552) of β-catenin, a multifunctional protein that acts as a transcriptional co-regulator in the nucleus. The purpose of this study was to identify β-catenin interacting proteins that may be involved in transcriptional regulation in rat inner medullary collecting duct (IMCD) cells using both experimental and computational approaches...
March 15, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28296657/neuroendocrine-derangements-in-early-septic-shock-pharmacotherapy-for-relative-adrenal-and-vasopressin-insufficiency
#16
James W Schurr, Paul M Szumita, Jeremy R DeGrado
Septic shock is a leading cause of mortality in intensive care units throughout the world. While this disease state represents a highly complex pathophysiology involving numerous organ systems, the early approach to care includes adequate hemodynamic support traditionally achieved via infusions of vasoactive medications after adequate fluid resuscitation. Relative adrenal and vasopressin deficiencies are a common feature of septic shock that contribute to impaired hemodynamics. Hydrocortisone and vasopressin are endocrine system hormone analogues that target the acute neuroendocrine imbalance associated with septic shock...
March 14, 2017: Shock
https://www.readbyqxmd.com/read/28295370/the-human-endolymphatic-sac-expresses-natriuretic-peptides
#17
Martin Nue Møller, Svend Kirkeby, Jonas Vikeså, Finn Cilius Nielsen, Per Cayé-Thomasen
OBJECTIVES/HYPOTHESIS: The function of the human endolymphatic sac (ES) has been enigmatic for decades. Hypotheses include controlling endolymphatic fluid homeostasis and inner ear immunological defense. Additionally, several studies indicate a possible endocrine capacity and a yet undefined role in intracranial pressure homeostasis. However, no direct evidence of such capacity exists. This study aims to explore and identify the hypothesized endocrine capacity of the human ES. STUDY DESIGN: DNA microarrays and immunohistochemistry were used for analyses of fresh human ES tissue samples...
March 14, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28295336/neurochemistry-of-neurons-in-the-ventrolateral-medulla-activated-by-hypotension-are-the-same-neurons-activated-by-glucoprivation
#18
Lindsay M Parker, Sheng Le, Travis Wearne, Kate Hardwick, Natasha N Kumar, Katherine J Robinson, Simon McMullan, Ann K Goodchild
Previous studies have demonstrated that a range of stimuli activate neurons, including catecholaminergic neurons, in the ventrolateral medulla. Not all catecholaminergic neurons are activated and other neurochemical content is largely unknown hence whether stimulus specific populations exist is unclear. Here we determine the neurochemistry (using in situ hybridization) of catecholaminergic and non-catecholaminergic neurons which express c-Fos immunoreactivity throughout the rostrocaudal extent of the ventrolateral medulla, in Sprague Dawley rats treated with hydralazine or saline...
March 13, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28294453/a-translational-approach-for-nmda-receptor-profiling-as-a-vulnerability-biomarker-for-depression-and-schizophrenia
#19
Handan Gunduz-Bruce, Joshua Kenney, Suravi Changlani, Aldo Peixoto, Ralitza Gueorguieva, Cheryl Leone, Nina Stachenfeld
Altered N-methyl-D-aspartate (NMDA) receptor activity and glutamate signaling may underlie the pathogenesis of both schizophrenia and depression in subgroups of patients. In schizophrenia, pharmacologic modeling, postmortem and imaging data suggest reduced NMDA signaling. In contrast, recent clinical trials demonstrating the efficacy of the NMDA antagonist ketamine in severely depressed patients suggest increased NMDA receptor signaling. We conducted a proof of concept study to assess whether there is any in vivo evidence for an inverse association in depression and schizophrenia with respect to the NMDA receptor function...
March 13, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28293470/hypothalamic-pituitary-adrenal-axis-and-depression-symptom-effects-of-an-arginine-vasopressin-type-1b-receptor-antagonist-in-a-one-week-randomized-phase-1b-trial
#20
David A Katz, Charles Locke, Nicholas Greco, Wei Liu, Katherine A Tracy
BACKGROUND: Arginine vasopressin 1B receptor (V1B) antagonists may have utility for the treatment of major depressive disorder (MDD). METHODS: The V1B antagonist ABT-436 (N = 31) or matching placebo (N = 20) was administered to MDD subjects for 7 days. The main study objectives were to assess the safety and hypothalamic-pituitary-adrenal axis (HPA) effects of ABT-436 in MDD subjects. MDD symptoms were assessed using the 17-item Hamilton Depression Rating Scale (HAM-D-17) and the subject-rated Mood and Anxiety Symptom Questionnaire (MASQ)...
March 2017: Brain and Behavior
keyword
keyword
23653
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"