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https://www.readbyqxmd.com/read/28428256/regulation-of-lung-endothelial-permeability-and-inflammatory-responses-by-prostaglandin-a2-role-of-ep4-receptor
#1
Tomomi Ohmura, Yufeng Tian, Nicolene Sarich, Yunbo Ke, Angelo Meliton, Alok S Shah, Katrin Andreasson, Konstantin G Birukov, Anna A Birukova
A role of prostaglandin A2 (PGA2) in modulation of vascular endothelial function remains unknown. We investigated effects of PGA2 on pulmonary endothelial cell (EC) permeability and inflammatory activation and identified a receptor mediating these effects. PGA2 enhanced the EC barrier and protected against barrier dysfunction caused by vasoactive peptide thrombin and proinflammatory bacterial wall lipopolysacharide (LPS). Receptor screening using pharmacologic and molecular inhibitory approaches identified EP4 as a novel PGA2 receptor...
April 20, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28427403/preoperative-carbohydrate-load-and-intraoperatively-infused-omega-3-polyunsaturated-fatty-acids-positively-impact-nosocomial-morbidity-after-coronary-artery-bypass-grafting-a-double-blind-controlled-randomized-trial
#2
Gibran Roder Feguri, Paulo Ruiz Lúcio de Lima, Danilo de Cerqueira Borges, Laura Ramos Toledo, Larissa Nadaf Batista, Thaís Carvalho E Silva, Neuber José Segri, José Eduardo de Aguilar-Nascimento
BACKGROUND: A strategy of limited preoperative fasting, with carbohydrate (CHO) loading and intraoperative infusion of omega-3 polyunsaturated fatty acids (ω-3 PUFA), has seldom been tried in cardiovascular surgery. Brief fasting, followed by CHO intake 2 h before anesthesia, may improve recovery from CABG procedures and lower perioperative vasoactive drug requirements. Infusion of ω-3 PUFA may reduce occurrences of postoperative atrial fibrillation (POAF) and shorten hospital stays...
April 20, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28424078/interleukin-6-displays-lung-anti-inflammatory-properties-and-exerts-protective-hemodynamic-effects-in-a-double-hit-murine-acute-lung-injury
#3
Guillaume Voiriot, Keyvan Razazi, Valérie Amsellem, Jeanne Tran Van Nhieu, Shariq Abid, Serge Adnot, Armand Mekontso Dessap, Bernard Maitre
BACKGROUND: Interleukin 6 (IL-6) is a predictive factor of poor prognosis in patients with acute respiratory distress syndrome (ARDS). However, its acute pulmonary hemodynamic effects and role in lung injury have not been investigated in a clinically relevant murine model of ARDS. METHODS: We used adult C57Bl6 wild-type (WT) and IL-6 knock-out (IL-6KO) mice. The animals received intravenous recombinant human IL-6 (rHuIL-6) or vehicle followed by intratracheal lipopolysaccharide (LPS) or saline before undergoing low tidal volume mechanical ventilation (MV) for 5 h...
April 19, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28422915/enteral-tranexamic-acid-attenuates-vasopressor-resistance-and-changes-in-%C3%AE-1-adrenergic-receptor-expression-in-hemorrhagic-shock
#4
Marco Santamaria, Federico Aletti, Joyce B Li, Aaron Tan, Monica Chang, Jessica Leon, Geert W Schmid-Schönbein, Erik B Kistler
BACKGROUND: Irreversible hemorrhagic shock is characterized by hyporesponsiveness to vasopressor and fluid therapy. Little is known, however, about the mechanisms that contribute to this phenomenon. Previous studies have shown that decreased intestinal perfusion in hemorrhagic shock leads to proteolytically-mediated increases in gut permeability, with subsequent egress of vasoactive substances systemically. Maintenance of blood pressure is achieved in part by α1 receptor modulation, which may be affected by vasoactive factors; we thus hypothesized that decreases in hemodynamic stability and vasopressor response in shock can be prevented by enteral protease inhibition...
April 18, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28421173/cerebral-autoregulation-brain-injury-and-the-transitioning-premature-infant
#5
REVIEW
Zachary A Vesoulis, Amit M Mathur
Improvements in clinical management of the preterm infant have reduced the rates of the two most common forms of brain injury, such as severe intraventricular hemorrhage and white matter injury, both of which are contributory factors in the development of cerebral palsy. Nonetheless, they remain a persistent challenge and are associated with a significant increase in the risk of adverse neurodevelopment outcomes. Repeated episodes of ischemia-reperfusion represent a common pathway for both forms of injury, arising from discordance between systemic blood flow and the innate regulation of cerebral blood flow in the germinal matrix and periventricular white matter...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28420471/-mixed-venous-arterial-carbon-dioxide-difference-combined-with-passive-leg-raising-in-guiding-volume-management-for-patients-post-off-pump-coronary-artery-bypass-grafting
#6
Likun Huo, Peijun Li, Chang Xie, Chenglei Yan, Jie Li
OBJECTIVE: To investigate whether mixed venous-arterial carbon dioxide difference (Pv-aCO2) combined with passive leg raising (PLR) could better guide volume management for patients post off-pump coronary artery bypass grafting (OPCABG). METHODS: Eighty patients experienced OPCABG, and admitted to Tianjin Chest Hospital from June 1st to October 1st in 2016 were enrolled. They were randomly divided into two groups: observation group given Pv-aCO2 combined with PLR directed therapy and control group given central venous pressure (CVP) directed therapy, 40 cases in each group...
April 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28408236/unintentional-pediatric-cocaine-exposures-result-in-worse-outcomes-than-other-unintentional-pediatric-poisonings
#7
Patil Armenian, Michelle Fleurat, George Mittendorf, Kent R Olson
BACKGROUND: Unintentional pediatric cocaine exposures are rare but concerning due to potentially serious complications such as seizures, dysrhythmias, and death. OBJECTIVES: The objectives were to assess the demographic and clinical characteristics of pediatric cocaine exposures reported to the California Poison Control System. METHODS: This is a retrospective study of all confirmed pediatric (< 6 years of age) cocaine exposures reported to the California Poison Control System from January 1, 1997-September 30, 2010...
April 10, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28407819/-association-between-fluid-overload-and-acute-renal-injury-after-congenital-heart-disease-surgery-in-infants
#8
De-Qiang Luo, Zi-Li Chen, Wei Dai, Feng Chen
OBJECTIVE: To study the association between fluid overload and acute kidney injury (AKI) after congenital heart disease surgery in infants. METHODS: A retrospective analysis was performed on 88 infants aged less than 6 months who underwent a radical surgery for congenital heart disease. The treatment outcomes were compared between the infants with AKI after surgery and those without. The effect of cumulative fluid overload on treatment outcomes 2 days after surgery was analyzed...
April 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28405029/protein-kinase-enzymes-in-the-human-vagina-relation-to-key-mediators-of-the-cyclic-amp-and-cyclic-gmp-pathways
#9
S Ückert, J Sonnenberg, J E Sonnenberg, W Kauffels, K Albrecht, M A Kuczyk, P Hedlund
Aside from phosphodiesterase (PDE) isoenzymes, protein kinases (cAK=cyclic AMP-binding protein kinase, cGK=cyclic GMP-binding protein kinase) have also been identified as important receptors for cyclic nucleotides. A significance of protein kinases in the control of the function of the male and female reproductive tract has been suggested; however, up until today, only a few approaches have addressed these enzymes in female genital tissues. The present study aimed to investigate by means of biochemical and immunohistochemical methods the expression of cAK and cGK...
April 13, 2017: International Journal of Impotence Research
https://www.readbyqxmd.com/read/28403995/comparative-efficacy-of-pharmacological-strategies-for-management-of-type-1-hepatorenal-syndrome-a-systematic-review-and-network-meta-analysis
#10
Antonio Facciorusso, Apoorva K Chandar, M Hassan Murad, Larry J Prokop, Nicola Muscatiello, Patrick S Kamath, Siddharth Singh
BACKGROUND: Several drugs have been studied to improve outcomes for patients with hepatorenal syndrome, but trials have reported variable efficacy. We aimed to compare the efficacy of different management strategies for type 1 hepatorenal syndrome. METHODS: For this systematic review and network meta-analysis, we searched Ovid MEDLINE In-Process & Other Non-Indexed Citations, Ovid MEDLINE, Ovid Embase, Ovid Cochrane Central Register of Controlled Trials, Scopus, and Web of Science for papers published up to June 9, 2016...
February 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28403673/mechanisms-mediating-functional-hyperemia-in-the-brain
#11
Amy R Nippert, Kyle R Biesecker, Eric A Newman
Neuronal activity within the brain evokes local increases in blood flow, a response termed functional hyperemia. This response ensures that active neurons receive sufficient oxygen and nutrients to maintain tissue function and health. In this review, we discuss the functions of functional hyperemia, the types of vessels that generate the response, and the signaling mechanisms that mediate neurovascular coupling, the communication between neurons and blood vessels. Neurovascular coupling signaling is mediated primarily by the vasoactive metabolites of arachidonic acid (AA), by nitric oxide, and by K(+)...
April 1, 2017: Neuroscientist: a Review Journal Bringing Neurobiology, Neurology and Psychiatry
https://www.readbyqxmd.com/read/28403587/tadalafil-once-daily-narrative-review-of-a-treatment-option-for-female-sexual-dysfunctions-fsd-in-midlife-and-older-women
#12
Chiara Borghi, Lucio Dell'Atti
Female Sexual Disorders (FSD) include a complex, multidimensional, individual experience that can change as an individual age, suggesting that these problems are caused by multiple factors including psychosocial factors, personal relationships, pathologic changes caused by diseases, and pharmacologic influences. Menopause is an important time for middle aged women and postmenopausal physiological changes could have a significant role in the development of FSD. Few is still known about their correct definition and treatment...
March 31, 2017: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28403121/pheochromocytoma-crisis-in-icu-a-french-multicenter-cohort-study-with-emphasis-on-rescue-extracorporeal-membrane-oxygenation
#13
Bertrand Sauneuf, Nicolas Chudeau, Benoit Champigneulle, Claire Bouffard, Marion Antona, Nicolas Pichon, David Marrache, Romain Sonneville, Antoine Marchalot, Camille Welsch, Antoine Kimmoun, Bruno Bouchet, Elmi Messai, Sylvie Ricome, David Grimaldi, Jonathan Chelly, Jean-Luc Hanouz, Alain Mercat, Nicolas Terzi
OBJECTIVES: To describe the characteristics, management, and outcome of patients admitted to ICUs for pheochromocytoma crisis. DESIGN: A 16-year multicenter retrospective study. SETTING: Fifteen university and nonuniversity ICUs in France. PATIENTS: Patients admitted in ICU for pheochromocytoma crisis. INTERVENTIONS: None. MEASUREMENT AND MAIN RESULTS: We included 34 patients with a median age of 46 years (40-54 yr); 65% were males...
April 11, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28402925/time-delays-associated-with-vasoactive-medication-preparation-and-delivery-in-simulated-patients-at-risk-of-cardiac-arrest
#14
P G Brindley, D O'Dochartaigh, C Volney, S Ryan, M J Douma
PURPOSE: To compare, quantify, and describe the time-delays associated with four common methods of adrenaline administration in the simulated setting of impending cardiac arrest. METHODS: Using sham medication and a high-fidelity simulator, experienced Nurses prepared, then delivered, adrenaline by: i) bolus, ii) lower-concentration infusion iii) higher-concentration infusion, and iv) higher-concentration infusion plus carrier-line. We recorded medication preparation and delivery time, plus administration errors and self-reported competence...
April 7, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28397372/k-channel-impairment-determines-sex-and-age-differences-in-epinephrine-mediated-outcomes-after-brain-injury
#15
William M Armstead, John Riley, Monica S Vavilala
Traumatic brain injury (TBI) is the leading cause of injury-related death in children, with boys and children under 4 years having particularly poor outcomes. Activation of ATP- and calcium-sensitive (KATP and KCa ) channels produces cerebrovasodilation and contributes to autoregulation, both of which are impaired after TBI, contributing to poor outcomes. Upregulation of the c-Jun-terminal kinase (JNK) isoform of mitogen-activated protein kinase produces K channel function impairment after CNS injury. Vasoactive agents can be used to normalize cerebral perfusion pressure...
April 11, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28396188/effects-of-nigella-sativa-extract-on-markers-of-cerebral-angiogenesis-after-global-ischemia-of-brain-in-rats
#16
Koroush Soleimannejad, Asghar Rahmani, Masoud Hatefi, Masoud Khataminia, Mohammad Reza Hafezi Ahmadi, Khairollah Asadollahi
BACKGROUND: Reduction of permanent or transient cerebral blood flow may lead to some structural and functional changes of the brain, causing high mortality and morbidity. The aim of this experimental study was to investigate the effects of hydroalcoholic extract of Nigella sativa (NS) on markers of cerebral angiogenesis in rats induced by global brain ischemia. METHODS: Thirty-two male Wistar rats (250 ± 20 g) were randomly divided into 4 groups: group 1, control group receiving only normal saline; group 2, sham group undergoing surgery and stroke induction without treatment; and groups 3 and 4 treated with 10 and 20 mg/kg NS, respectively, after induction of stroke...
April 7, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28385693/expression-and-localization-of-vpac1-the-major-receptor-of-vasoactive-intestinal-peptide-along-the-length-of-the-intestine
#17
Dulari Jayawardena, Grace Guzman, Ravinder K Gill, Waddah A Alrefai, Hayat Onyuksel, Pradeep K Dudeja
Vasoactive intestinal peptide (VIP) is an endogenous neuropeptide with a broad array of physiological functions in many organs including the intestine. Its actions are mediated via G- protein coupled receptors and VPAC1 is the key receptor responsible for majority of VIP's biological activity. The distribution of VPAC1 along the length of the gastrointestinal tract and its sub cellular localization in intestinal epithelial cells has not been fully characterized. The current studies were undertaken to determine VPAC1 distribution and localization so that VIP based therapies can be targeted to specific regions of the intestine...
April 6, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28383293/peripheral-nerve-block-as-a-supplement-to-light-or-deep-general-anesthesia-in-elderly-patients-receiving-total-hip-arthroplasty-a-prospective-randomized-study
#18
Bin Mei, Hanning Zha, Xiaolong Lu, Xinqi Cheng, Shishou Cheng, Xuesheng Liu, Yuanhai Li, Erwei Gu
BACKGROUND: Peripheral nerve block combined with general anesthesia is a preferable anesthesia method for elderly patients receiving hip arthroplasty. The depth of sedation may influence patient recovery. Therefore, we aimed to investigate the influence of peripheral nerve blockade and different intraoperative sedation levels on the short-term recovery of elderly patients receiving total hip arthroplasty. METHODS: Patients aged 65 years and older undergoing total hip arthroplasty were randomized into three groups: a general anesthesia without lumbosacral plexus block group, and two general anesthesia plus lumbosacral plexus block groups, each with a different level of sedation (light or deep)...
April 5, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28379598/sildenafil-associated-hepatoxicity-a-review-of-the-literature
#19
S Graziano, A Montana, S Zaami, M C Rotolo, A Minutillo, F P Busardò, E Marinelli
Sildenafil citrate (Viagra®) is a vasoactive agent available worldwide since 1998 for the treatment of male erectile dysfunction. It is a selective phosphodiesterase type 5-enzyme inhibitor able to potentiate the downstream effects of nitric oxide on smooth muscle relaxation and vasodilation through its effects on the cyclic guanosine monophosphate (c-GMP) pathway in the erectile tissue of the penis. When sildenafil is orally administered, it is rapidly absorbed with a maximum plasma concentration achieved within 1 h and has a terminal half-life of between 3 to 6 h...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28379296/relaxin-treatment-reduces-angiotensin-ii-induced-vasoconstriction-in-pregnancy-and-protects-against-endothelial-dysfunction
#20
Sarah A Marshall, Chen Huei Leo, Jane E Girling, Marianne Tare, Sally Beard, Natalie J Hannan, Laura J Parry
The peptide relaxin has gained considerable attention as a new vasoactive drug, largely through its beneficial therapeutic effects in cardiovascular disease. In this study, we tested the hypothesis that relaxin treatment alleviates systemic vascular dysfunction characteristic of hypertensive diseases of pregnancy. We investigated vascular effects and mechanisms of relaxin action in: i) pregnant relaxin-deficient (Rln-/-) mice with enhanced responses to angiotensin II (AngII), and ii) arteries pre-incubated ex vivo in trophoblast conditioned media (TCM) to induce endothelial dysfunction...
April 3, 2017: Biology of Reproduction
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