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https://www.readbyqxmd.com/read/28344561/fetal-growth-restriction-induces-heterogeneous-effects-on-vascular-biomechanical-and-functional-properties-in-guinea-pigs-cavia-porcellus
#1
Daniel Cañas, Emilio A Herrera, Claudio García-Herrera, Diego Celentano, Bernardo J Krause
Aim: Fetal growth restriction (FGR) is associated with a variety of cardiometabolic diseases in adulthood which could involve remodeling processes of the vascular walls that could start in the fetal period. However, there is no consensus whether this remodeling affects in a similar way the whole vascular system. We aimed to determine the effects of FGR on the vasoactive and biomechanical properties of umbilical and systemic vessels in fetal guinea pigs. Methods: FGR was induced by implanting ameroid occluders at mid-gestation in uterine arteries of pregnant guinea pigs, whilst the control group was exposed to simulated surgery...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28343071/analgesia-effect-of-baicalein-against-ntg-induced-migraine-in-rats
#2
Xiao-Fan Zhang, Wen-Jun Zhang, Cui-Lan Dong, Wan-Li Hu, Yu-Yao Sun, Yarigui Bao, Chun-Feng Zhang, Chang-Run Guo, Chong-Zhi Wang, Chun-Su Yuan
BACKGROUND: Migraine is a complex nervous system disease characterized by typical throbbing and unilateral headache, which causes severe healthy and social issues worldwide. The purpose of this study was to investigate the effect of baicalein (BAI) on the treatment of migraine. MATERIAL AND METHODS: Twenty-four rats were randomly divided equally into four groups, including a blank group, model group, positive group (ibuprofen tablets 82mg/kg), and BAI group (60mg/kg)...
March 23, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28342135/pacap-protects-against-ethanol-and-nicotine-toxicity-in-sh-sy5y-cells-implications-for-drinking-smoking-co-morbidity
#3
Sridharan Manavalan, Bruk Getachew, Kebreten F Manaye, Syed J Khundmiri, Antonei B Csoka, Raechel McKinley, Andrea Tamas, Dora Reglodi, Yousef Tizabi
The detrimental effects of heavy drinking and smoking are multiplied when the two are combined. Treatment modalities for each and especially for the combination are very limited. Although in low concentration, alcohol and nicotine, each may have beneficial effects including neuroprotection, their combination, instead of providing additive protection, may actually lead to toxicity in cell cultures. Pituitary adenylate cyclase-activating polypeptide (PACAP) is an endogenous 38 amino-acid peptide with demonstrated protection against neuronal injury, trauma as well as various endogenous and exogenous toxic agents...
March 24, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28340838/anesthetic-management-for-left-ventricular-assist-device-implantation-through-left-thoracotomy-evaluation-of-on-pump-versus-off-pump
#4
C Sahutoglu, E Turksal, U Bilic, S Kocabas, F Zekiye Askar, P Ozturk, S Ertugay, C Engin, T Yagdi, M Ozbaran
BACKGROUND: Ventricular assist devices (VADs) are alternative approaches to medical treatment in patients with acute or chronic heart failure. The goal of this study was to compare an anesthetic approach in patients undergoing implantation of a VAD with (on-pump) or without (off-pump) cardiopulmonary bypass (CPB) through left thoracotomy. METHODS: A total of 32 patients were divided into 2 groups: on-pump (group 1) and off-pump (group 2). A standard anesthesia protocol was used in all patients...
April 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28340262/effect-of-photoperiod-on-serum-hormone-concentrations-during-the-annual-reproductive-cycle-in-geese
#5
X Z Zhao, G L Gao, H W Wang, Q Li, K S Zhang, H Zhong, Q G Wang
The poor egg-laying rate of geese hinders the development of the goose industry; therefore, the reproductive performance of geese is an important area of investigation. To evaluate the relationship between photoperiod, reproductive hormones, and reproductive activity during the egg-laying cycle in geese under natural conditions, we collected blood samples from Sichuan white geese and Xupu geese to quantify changes in prolactin (PRL), estradiol (E2), vasoactive intestinal polypeptide (VIP), follicle stimulating hormone (FSH), gonadotropin-inhibitory hormone (GnIH), and luteinizing hormone (LH)...
March 22, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28338740/the-role-of-vip-in-social-behavior-neural-hotspots-for-the-modulation-of-affiliation-aggression-and-parental-care
#6
Marcy A Kingsbury, Leah C Wilson
Although the modulation of social behaviors by most major neurochemical systems has been explored, there are still standouts, including the study of vasoactive intestinal polypeptide (VIP). VIP is a modulator of circadian, reproductive, and seasonal rhythms and is well known for its role in reproductive behavior, as it is the main vertebrate prolactin-releasing hormone. Originally isolated as a gut peptide, VIP and its cognate receptors are present in virtually every brain area that is important for social behavior, including all nodes of the core "social behavior network" (SBN)...
December 16, 2016: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/28336302/-vasopressors-and-inotropes-use-in-pediatrics
#7
Adrián García-Canales, Rocío Alejandra Peña-Juárez, Luz de María Sandoval-Franco
The cardiovascular system is a dynamic system whose function is to ensure adequate delivery of oxygen, nutrients and hormones to the tissues, necessary for cell metabolism, also synthesizes and modifies vasoactive components to regulate vascular tone and myocardial function. These components have become critical in the management of pediatric patients in critical condition with heart failure and shock which has proven its beneficial effects, however its use and abuse brings harmful effects, increase mortality, associated with arrhythmias and increase myocardial oxygen consumption favoring the presence of ischemia, therefore is necessary to know the mechanism of action and indications of these drugs to minimize the harmful effects...
March 20, 2017: Archivos de Cardiología de México
https://www.readbyqxmd.com/read/28327598/global-dna-methylation-analysis-identifies-two-discrete-clusters-of-pheochromocytoma-with-distinct-genomic-and-genetic-alterations
#8
Samuel Backman, Rajani Maharjan, Alberto Falk-Delgado, Joakim Crona, Kenko Cupisti, Peter Stålberg, Per Hellman, Peyman Björklund
Pheochromocytomas and paragangliomas (PPGLs) are rare and frequently heritable neural-crest derived tumours arising from the adrenal medulla or extra-adrenal chromaffin cells respectively. The majority of PPGL tumours are benign and do not recur with distant metastases. However, a sizeable fraction of these tumours secrete vasoactive catecholamines into the circulation causing a variety of symptoms including hypertension, palpitations and diaphoresis. The genetic landscape of PPGL has been well characterized and more than a dozen genes have been described as recurrently mutated...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28325781/hete-signals-through-g-protein-coupled-receptor-gpr75-gq-to-affect-vascular-function-and-trigger-hypertension
#9
Victor Garcia, Ankit Gilani, Brian Shkolnik, Varunkumar Pandey, Frank F Zhang, Rambabu Dakarapu, Shyam K Gandham, N R Reddy, Joan P Graves, Artiom Gruzdev, Darryl C Zeldin, Jorge H Capdevila, John R Falck, Michal L Schwartzman
Rationale: 20-Hydroxyeicosatetraenoic acid (20-HETE), one of the principle cytochrome P450 (CYP) eicosanoids, is a potent vasoactive lipid whose vascular effects include stimulation of smooth muscle contractility, migration and proliferation, as well as endothelial cell dysfunction and inflammation. Increased levels of 20-HETE in experimental animals and in humans are associated with hypertension, stroke, myocardial infarction and vascular diseases. Objective: To date, a receptor/binding site for 20-HETE has been implicated based on the use of specific agonists and antagonists...
March 21, 2017: Circulation Research
https://www.readbyqxmd.com/read/28324630/morphological-and-neurochemical-differences-in-peptidergic-nerve-fibres-of-the-mouse-vagina
#10
Christine Barry, Esther Ji, Harman Sharma, Lara Beukes, Pat Vilimas, Yvette DeGraaf, Dusan Matusica, Rainer V Haberberger
The vagina is innervated by a complex arrangement of sensory, sympathetic and parasympathetic nerve fibres that contain classical transmitters plus an array of neuropeptides and enzymes known to regulate diverse processes including blood flow and nociception. The neurochemical characteristics and distributions of peptide-containing nerves in the mouse vagina are unknown. This study used multiple labelling immunohistochemistry, confocal imaging and analysis to investigate the presence and colocalization of the peptides vasoactive intestinal polypeptide (VIP), calcitonin-gene related peptide (CGRP), substance P (SP), neuropeptide tyrosine (NPY) and the nitric oxide synthesizing enzyme neuronal nitric oxide synthase (nNOS) in nerve fibres of the murine vaginal wall...
March 21, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28323233/iloprost-use-in-patients-with-persistent-intestinal-ischemia-unsuitable-for-revascularization
#11
Alexandre Nuzzo, Damien Soudan, Lore Billiauws, Julie Bataille, Léon Maggiori, Maxime Ronot, Jeanick Stocco, Yoram Bouhnik, Yves Castier, Olivier Corcos
INTRODUCTION: Persistent or chronic intestinal ischemic injury (i3) can lead to severe malnutrition and acute mesenteric ischemia. Although recommended, revascularization of splanchnic arteries is sometimes unrealizable. MATERIAL AND METHODS: We report a case series of iloprost use in consecutive stable patients with persistent i3 unsuitable for revascularization followed in a tertiary care center. The feasibility of revascularization was discussed and ruled out by a multidisciplinary team, and informed consent was obtained prior to consideration of a vasoactive therapy...
March 16, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28318674/organ-donor-management-eight-common-recommendations-and-actions-that-deserve-reflection
#12
C Chamorro-Jambrina, M R Muñoz-Ramírez, J L Martínez-Melgar, M S Pérez-Cornejo
Despite major advances in our understanding of the physiopathology of brain death (BD), there are important controversies as to which protocol is the most appropriate for organ donor management. Many recent reviews on this subject offer recommendations that are sometimes contradictory and in some cases are not applied to other critically ill patients. This article offers a review of the publications (many of them recent) with an impact upon these controversial measures and which can help to confirm, refute or open new areas of research into the most appropriate measures for the management of organ donors in BD, and which should contribute to discard certain established recommendations based on preconceived ideas, that lead to actions lacking a physiopathological basis...
March 16, 2017: Medicina Intensiva
https://www.readbyqxmd.com/read/28315308/target-specific-alterations-in-the-vip-inhibitory-drive-to-hippocampal-gabaergic-cells-after-status-epilepticus
#13
Linda Suzanne David, Lisa Topolnik
Status epilepticus (SE) is associated with complex reorganization of hippocampal circuits involving a significant loss of specific subtypes of GABAergic interneurons. While adaptive circuit plasticity may increase the chances for recruitment of surviving interneurons, the underlying mechanisms remain largely unknown. We studied the alterations in the inhibitory tone received by the hippocampal CA1 oriens/alveus (O/A) interneurons from the vasoactive intestinal peptide (VIP)- and calretinin (CR)-expressing interneurons using the pilocarpine-induced status epilepticus (SE) model of epilepsy...
March 15, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28303751/vasoactive-peptides-associate-with-treatment-outcome-ofbevacizumab-containing-therapy-in-metastatic-colorectal-cancer
#14
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/28302929/heartworm-extract-induces-relaxation-of-isolated-rat-thoracic-aorta
#15
Katsuya Kitoh, Hiroaki Nakamura, Hitoshi Kitagawa, Toshihiro Unno, Seiichi Komori, Shin-Pin Chiou, Yasuhiro Takashima
Isolated rat thoracic aortic strips undergoing noradrenaline-induced contraction were treated with an adult heartworm (HW) crude extract and then examined for isometric changes in tension. HW extract caused relaxation of endothelium-intact strips, but not endothelium-denuded strips. This effect was inhibited by treatment with N(G)-nitro-L-arginine methyl ester hydrochloride (L-NAME) and could be reversed by additional treatment with L-arginine. However, HW extract at a high concentration caused slight relaxation of endothelium-denuded strips, and relaxation persisted after L-NAME treatment in endothelium intact-strips...
March 8, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28298202/evaluation-of-sublingual-microcirculation-in-a-paediatric-intensive-care-unit-prospective-observational-study-about-its-feasibility-and-utility
#16
Rafael González, Jorge López, Javier Urbano, María José Solana, Sarah Nicole Fernández, María José Santiago, Jesús López-Herce
BACKGROUND: Evaluation of the microcirculation in critically ill patients is usually done by means of indirect parameters. The aim of our study was to evaluate the functional state of the microcirculation by direct visualization of sublingual microcirculation using Sidestream Dark Field Imaging, to determine the correlation between these findings and other parameters that are commonly used in the clinical practice and to assess the applicability of the systematic use of this technique in critically ill children...
March 15, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28296657/neuroendocrine-derangements-in-early-septic-shock-pharmacotherapy-for-relative-adrenal-and-vasopressin-insufficiency
#17
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/28296053/vasoactive-effect-of-fibronectin-derived-epiviosamine-1-and-related-peptides-in-quiescent-and-stress-models
#18
Mary D Frame, Fubao Lin, Anthony M Dewar, Richard Af Clark
OBJECTIVE: Following thermal burn injury, plasma fibronectin degrades within the interstitium; one possible product is epiviosamine-1 (EVA-1, PSHISKYILRWRPK) found within the first type III repeat of plasma fibronectin (FNIII1 ). EVA-1 ameliorates thermal burn injury progression, and binds to and enhances platelet-derived growth factor-BB (PDGF-BB) in promoting cell metabolism, growth and survival; shorter related peptides lose these abilities. Here we study the effect of EVA-1 and shorter peptides for their vasoactivity under quiescent and stress conditions...
March 15, 2017: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/28295621/hepatic-and-plasma-endothelin-1-in-dogs-with-chronic-hepatitis
#19
Y Sakamoto, M Sakai, T Watari
BACKGROUND: Endothelin (ET)-1 is a 21-amino-acid peptide with potent vasoactive properties, which increases intrahepatic resistance in patients with chronic hepatitis (CH) or cirrhosis. ET-1 concentrations have not been investigated in dogs with CH. HYPOTHESIS/OBJECTIVES: This study compared hepatic and plasma ET-1 levels in healthy dogs and in dogs with CH, and examined the relationship between the plasma ET-1 level and portal vein pressure in dogs with CH. ANIMALS: Fourteen healthy dogs and twenty dogs with CH were used in this study...
March 14, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28292533/assessment-of-hydration-status-using-bioelectrical-impedance-vector-analysis-in-critical-patients-with-acute-kidney-injury
#20
Ana Cláudia da Rosa Hise, Maria Cristina Gonzalez
BACKGROUND & AIMS: The state of hyperhydration in critically ill patients with acute kidney injury (AKI) is associated with increased mortality. Bioelectrical impedance vector analysis (BIVA) appears to be a viable method to access the fluid status of critical patients but has never been evaluated in critical patients with AKI. The objective of this study is to evaluate the hydration status measured using BIVA in critical patients under intensive care at the time of AKI diagnosis and to correlate this measurement with mortality...
February 21, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
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