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Ali Duyu, Elvan Çağlar Çıtak, Erdem Ak, Serhan Kupeli, Begül Yağcı Küpeli, İbrahim Bayram, Gülay Sezgin, Gülçin Eskendari, Kerem Sezer
OBJECTIVE: In this study, we evaluated the frequency of euthyroid sick syndrome (ESS) among patients with childhood cancer and its association with the stage of disease, nutritional parameters and cytokines levels. METHODS: Eighty newly diagnosed children were included into study. ESS was diagnosed in two different ways:Criteria 1; fT3 was below the lower limit, fT4 was within the normal or low limits, TSH was in normal range and in criteria 2 all the levels were same as criteria 1 but moreover rT3 was performed and was higher than normal limits...
March 19, 2018: Journal of Clinical Research in Pediatric Endocrinology
Tolga Aksu, Tumer Erdem Guler, Kivanc Yalin, Ferit Onur Mutluer, Kazim Serhan Ozcan, Leonardo Calò
Enhanced parasympathetic tone may cause sinus bradycardia or pauses, transient or permanent atrioventricular block, with resultant vasovagal syncope. A substantial portion of these patients may be highly symptomatic and refractory to the conventional therapies and may require cardiac pacemaker implantation. Cardioneuroablation is a little known technique for management of patients with excessive vagal activation based on radiofrequency catheter ablation of main parasympathetic autonomic ganglia around the heart...
March 2018: American Journal of the Medical Sciences
Sule Ozbilgin, Derya Aslan Yurtlu, Beyza Küçükoztaş, Gonca Kamacı, Sezen Korkut, Bülent Serhan Yurtlu, M Ensari Güneli, Volkan Hancı, Ali Günerli
Previous studies have shown that cyclodextrin group medicines bind to various drugs. The hypothesis of our study is to determine whether sugammadex could bind to digoxin and delay the cardiovascular toxicity of that drug. Twenty-eight sedated Wistar rats were infused with digoxin at 3 mg/h (0.25 mg/ml). Five minutes after the start of infusion, animals were treated with a bolus of either 16 mg/kg (Sgdx16), 100 mg/kg (Sgdx100), or 1000 mg/kg (Sgdx1000) sugammadex. The control group infusion did not contain sugammadex...
March 16, 2018: Cardiovascular Toxicology
Paul C Norris, Charles N Serhan
Metabolomics enables a systems approach to interrogate the bioactive mediators, their pathways and further metabolites involved in the physiology and pathophysiology of human and animal tissues. New metabololipidomic approaches with mass spectrometry presented in this brief review can now be utilized for the identification and profiling of lipid mediator networks that control inflammation-resolution in human blood and healthy and diseased solid tissues. Coagulation of blood is a protective response that prevents excessive bleeding on injury of blood vessels...
March 7, 2018: Biochemical and Biophysical Research Communications
Ho Pan Sham, Katherine H Walker, Raja-Elie E Abdulnour, Nandini Krishnamoorthy, David N Douda, Paul C Norris, Ioanna Barkas, Sarah Benito-Figueroa, Jennifer K Colby, Charles N Serhan, Bruce D Levy
Specialized proresolving mediators (SPMs) decrease NF-κB activity to prevent excessive tissue damage and promote the resolution of acute inflammation. Mechanisms for NF-κB regulation by SPMs remain to be determined. In this study, after LPS challenge, the SPMs 15-epi-lipoxin A4 (15-epi-LXA4 ), resolvin D1, resolvin D2, resolvin D3, and 17-epi-resolvin D1 were produced in vivo in murine lungs. In LPS-activated human bronchial epithelial cells, select SPMs increased expression of the NF-κB regulators A20 and single Ig IL-1R-related molecule (SIGIRR)...
March 9, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
Ganesh V Halade, Paul C Norris, Vasundhara Kain, Charles N Serhan, Kevin A Ingle
Inflammation promotes healing in myocardial infarction but, if unresolved, leads to heart failure. To define the inflammatory and resolving responses, we quantified leukocyte trafficking and specialized proresolving mediators (SPMs) in the infarcted left ventricle and spleen after myocardial infarction, with the goal of distinguishing inflammation from its resolution. Our data suggest that the spleen not only served as a leukocyte reservoir but also was the site where SPMs were actively generated after coronary ligation in mice...
March 6, 2018: Science Signaling
M D Cyrus Oster, M D Theodore Stein, M D Sumire Kitahara, M D Serhan Alkan, Qin Huang
Primary effusion lymphoma (PEL) is a distinct clinicopathologic entity usually characterized by presentation as a lymphomatous body cavity effusion in the absence of solid tumor mass or dissemination during its clinical course. PEL can also rarely occur as a solid lymphoma involving nodal and extranodal sites and is referred to as extracavitary PEL. Here we report a unique case of extracavitary PEL in a 49year-old HIV-seropositive patient, who presented with vague abdominal pain and 20 pound weight loss. Esophagogastroduodenoscopy and colonoscopy revealed >100 broad based intestinal polyps ranging from 2 mm to 3cm in size, spreading from the duodenum to the rectum as a typical impression of "intestinal polyposis syndrome"...
March 2, 2018: Human Pathology
Corneliu Sima, Eduardo Montero, Daniel Nguyen, Marcelo Freire, Paul Norris, Charles N Serhan, Thomas E Van Dyke
A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper.
March 2, 2018: Scientific Reports
Amal A Halawa, Joanne C Damborsky, G Simona Slaton, Ursula H Winzer-Serhan
Maternal smoking has negative long-term consequences on affective behaviors, and in rodents, chronic neonatal nicotine exposure (CNN) results in increased anxiety. In rat pups, acute nicotine stimulation activates brain regions associated with stress and anxiety, but chronic nicotine exposure could desensitize of nicotinic acetylcholine receptors, the molecular target of nicotine. Here, we determined whether CNN affected neuronal activation by an acute nicotine challenge. Using in situ hybridization, we analyzed mRNA expression of the immediate-early genes (IEGs) c-Fos, Arc, Egr-1 and Npas4, which are markers for neuronal activation and implicated in synaptic plasticity...
February 26, 2018: Brain Research
Nan Chiang, Ian R Riley, Jesmond Dalli, Ana R Rodriguez, Bernd W Spur, Charles N Serhan
Resolution of acute inflammation is governed, in part, by lipid mediator class switching from proinflammatory eicosanoids to specialized proresolving mediators, including a recently identified new pathway of mediators, termed maresin conjugates in tissue regeneration (MCTR), which includes MCTR1, MCTR2, and MCTR3. Here, we addressed whether each MCTR can impact the known vascular actions of cysteinyl leukotrienes. Leukotriene D4 (LTD4 ; 1.5 nmol/mouse) initiated vascular leakage in mouse cremaster vessels, which was reduced (>75%) by MCTR1 and MCTR2 (0...
February 28, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Ganesh V Halade, Vasundhara Kain, Charles N Serhan
Resolvins are innate, immune responsive, bioactive mediators generated after myocardial infarction (MI) to resolve inflammation. The MI-induced bidirectional interaction between progressive left ventricle (LV) remodeling and kidney dysfunction is known to advance cardiorenal syndrome (CRS). Whether resolvins limit MI-induced cardiorenal inflammation is unclear. Thus, to define the role of exogenous resolvin D (RvD)-1 in post-MI CRS, we subjected 8-12-wk-old male C57BL/6 mice to coronary artery ligation. RvD1 was injected 3 h after MI...
February 13, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Cemile Merve Seymen, Serhan Tuncer, M Suhan Ayhan, Cigdem Elmas
BACKGROUND: In this study, our aim is to investigate the possible effects of Botulinum toxin type A administrations in the early and late periods on the brain stem. METHODS: Eighteen white New Zealand rabbits were used in this study with the subjects being divided into three groups. Group I received 0.05 mL sterile saline to the left anterior auricular muscles. Group II and III were injected with Botulinum toxin type A (Botox, Allergan) to the left anterior auricular muscles...
February 6, 2018: Aesthetic Plastic Surgery
Jeremy W Winkler, Stephania Libreros, Xavier De La Rosa, Brian E Sansbury, Paul C Norris, Nan Chiang, David Fichtner, Gregory S Keyes, Nicholas Wourms, Matthew Spite, Charles N Serhan
Local production and downstream metabolism of specialized proresolving lipid mediators (SPMs) are pivotal in regulating their biological actions during resolution of inflammation. Resolvin D4 (RvD4: 4S,5R,17S-trihydroxydocosa-6E,8E,10Z,13Z,15E,19Z hexaenoic acid) is one of the more recently elucidated SPMs with complete stereochemistry biosynthesized from docosahexaenoic acid . Here, we report a new multimilligram commercial synthesis that afforded enough material for matching, validation, and further evaluation of RvD4 functions...
January 29, 2018: Journal of Leukocyte Biology
Jesmond Dalli, Romain A Colas, Mary E Walker, Charles N Serhan
Solid-phase extraction coupled with liquid chromatography tandem mass spectrometry provides a robust and sensitive approach for the identification and quantitation of specialized pro-resolving mediators (lipoxins, resolvins, protectins, and maresins), their pathway markers and the classic eicosanoids. Here, we provide a detailed description of the methodologies employed for the extraction of these mediators from biological systems, setup of the instrumentation, sample processing, and then the procedures followed for their identification and quantitation...
2018: Methods in Molecular Biology
Romain A Colas, Anthony W Ashton, Shankar Mukherjee, Jesmond Dalli, Oscar B Akide-Ndunge, Huan Huang, Mahalia S Desruisseaux, Fangxia Guan, Linda A Jelicks, Fabiane Matos Dos Santos, Jyothi Nagajyothi, Michael Zingman, Jinet Reyes, Louis M Weiss, Charles N Serhan, Herbert B Tanowitz
Trypanosoma cruzi is a protozoan parasite that causes Chagas disease (CD). CD is a persistent, life-long infection affecting many organs, most notably the heart where it may result in acute myocarditis and chronic cardiomyopathy. The pathological features include myocardial inflammation and fibrosis. In the Brazil-strain infected CD-1 mouse that recapitulates many of the features of human infection, we found increased plasma levels of resolvin D1 (RvD1), a specialized pro-resolving mediator of inflammation, both during the acute and chronic phases of the infection (>100 days post infection) as determined by ELISA...
January 22, 2018: Infection and Immunity
Oliver Werz, Jana Gerstmeier, Stephania Libreros, Xavier De la Rosa, Markus Werner, Paul C Norris, Nan Chiang, Charles N Serhan
Proinflammatory eicosanoids (prostaglandins and leukotrienes) and specialized pro-resolving mediators (SPM) are temporally regulated during infections. Here we show that human macrophage phenotypes biosynthesize unique lipid mediator signatures when exposed to pathogenic bacteria. E. coli and S. aureus each stimulate predominantly proinflammatory 5-lipoxygenase (LOX) and cyclooxygenase pathways (i.e., leukotriene B4 and prostaglandin E2) in M1 macrophages. These pathogens stimulate M2 macrophages to produce SPMs including resolvin D2 (RvD2), RvD5, and maresin-1...
January 4, 2018: Nature Communications
Madhur P Motwani, Frances Bennett, Paul C Norris, Alexander A Maini, Marc J George, Justine Newson, Alice Henderson, Adrian J Hobbs, Mark Tepper, Barbara White, Charles N Serhan, Raymond MacAllister, Derek W Gilroy
Anabasum is a synthetic analogue of Δ8 - tetrahydrocannabinol (THC)-11-oic acid that in pre-clinical models of experimental inflammation exerts potent anti-inflammatory actions with minimal CNS cannabimimetic activity. Here we used a novel model of acute inflammation driven by i.d. UV-killed E. coli in healthy humans and found that Anabasum (5mg) exerted a potent anti-inflammatory effect equivalent to that of prednisolone in terms of inhibiting neutrophil infiltration, the hallmark of acute inflammation. These effects arose from the inhibition of the neutrophil chemoattractant LTB4 , while the inhibition of anti-phagocytic prostanoids (PGE2 , TxB2 and PGF2 α) resulted in enhanced clearance of inflammatory stimulus from the injected site...
December 14, 2017: Clinical Pharmacology and Therapeutics
Mehmet Ali Erdem, Burcin Karatasli, Onur Dinçer Kose, Taha Emre Kose, Erhan Çene, Serhan Aydın Aya, Abdulkadir Burak Cankaya
Purpose: Friction-style and spring-style torque wrenches are used to tighten implant abutments and prosthetic screws. The mechanical stability of these torque wrenches is crucial for the implant-abutment connection. The purposes of this study were to assess the performance of five brands (Straumann, Zimmer, Implant KA, Bredent, and Biohorizons) of wrench and to evaluate possible changes in applied torque values of aged wrenches. Materials and Methods: Five new and aged wrenches that had been used approximately 250 times in a 1-year period were tested...
2017: BioMed Research International
Tufan Egeli, Tarkan Unek, Mucahit Ozbilgin, Cihan Agalar, Serhan Derici, Mesut Akarsu, Ilkay Tugba Unek, Murat Aysin, Aylin Bacakoglu, Ibrahim Astarcıoglu
OBJECTIVES: Our objective was to analyze characteristics, risk factors, and incidence of de novo malignancies after liver transplant. MATERIALS AND METHODS: The hospital records of 557 patients who underwent liver transplant were analyzed from the point of de novo malignancy development. We evaluated the demographic features and survival of these patients retrospectively. RESULTS: The research covered 429 patients, 9 (2%) of whom developed de novo malignancy...
December 14, 2017: Experimental and Clinical Transplantation
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