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https://www.readbyqxmd.com/read/29163553/ppargamma-deficiency-counteracts-thymic-senescence
#1
David Ernszt, Krisztina Banfai, Zoltan Kellermayer, Attila Pap, Janet M Lord, Judit E Pongracz, Krisztian Kvell
Thymic senescence contributes to increased incidence of infection, cancer and autoimmunity at senior ages. This process manifests as adipose involution. As with other adipose tissues, thymic adipose involution is also controlled by PPARgamma. This is supported by observations reporting that systemic PPARgamma activation accelerates thymic adipose involution. Therefore, we hypothesized that decreased PPARgamma activity could prevent thymic adipose involution, although it may trigger metabolic adverse effects...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29155646/combination-treatment-of-docosahexaenoic-acid-dha-and-all-trans-retinoic-acid-atra-inhibit-il-17-and-ror%C3%AE-t-gene-expression-in-pbmcs-of-patients-with-relapsing-remitting-multiple-sclerosis
#2
Ateke Mousavi Nasl-Khameneh, Abbas Mirshafiey, Abdorreza Naser Moghadasi, Reza Chahardoli, Maryam Mahmoudi, Karim Parastouei, Mir Saeed Yekaninejad, Ali Akbar Saboor-Yaraghi
OBJECTIVES: Multiple sclerosis (MS) is a demyelinating disorder with a complex autoimmune pathophysiology. Its initiation and progression correlate with IL-17 and the related transcription factor, RORγt. All-trans retinoic acid (ATRA) is a bioactive derivative of vitamin A, and docosahexaenoic acid (DHA) is an active metabolite of omega-3 fatty acid; both have immunomodulatory effects in many immune disorders. This study investigated the effects of DHA and ATRA individually and in combination on IL-17 and RORγt gene expression in peripheral blood mononuclear cells (PBMCs) of relapsing-remitting MS (RRMS) patients who were receiving interferon beta (IFN-β)...
November 18, 2017: Neurological Research
https://www.readbyqxmd.com/read/29145678/-thrombocytosis-and-thrombocytopenia-background-and-clinical-relevance
#3
Kai Wille, Parvis Sadjadian, Martin Griesshammer
Due to the central role of platelets in hemostasis, the clinical relevance of quantitative changes in platelet counts (< 150 G/l or > 450 G/l) may be significant. Thrombopoesis (= production of platelets) occurs in the bone marrow, and the hormone thrombopoetin takes control on its regulation.In thrombocytosis, primary causes have to be distinguished from the far more common reactive (= secondary) reasons. The most important form of primary thrombocytosis occurs in myeloproliferative neoplasms especially in essential thrombocythemia (ET)...
November 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/29144890/comprehensive-analysis-of-patients-with-neuromyelitis-optica-spectrum-disorder-nmosd-combined-with-chronic-hepatitis-b-chb-infection-and-seropositive-for-anti-aquaporin-4-antibody
#4
Jia Liu, Li Xu, Zhuo-Lin Chen, Min Li, Huan Yi, Fu-Hua Peng
Previous research indicated the association between hepatitis B virus (HBV) infection/vaccination and the onset of demyelinating diseases. However, most of these studies were single case reports, and comprehensive data are still scarce. Here we present a comprehensive analysis of 10 patients with neuromyelitis optica spectrum disorder (NMOSD) combined with chronic hepatitis B (CHB) infection and seropositive for anti-aquaporin-4 antibody (AQP4-Ab). Demographic, clinical, laboratory, neuroimaging, outcome, and follow-up data of the 10 patients were retrospectively analyzed...
November 16, 2017: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29141819/autoimmune-aquaporin-4-induced-damage-beyond-the-central-nervous-system
#5
REVIEW
Dian He, Anni Zhang, Ya Li, Gang Cai, Yuan Li, Shipeng Guo
Initially, it was believed that Aquaporin-4 (AQP4)- immunoglobulin G (IgG) only affected the central nervous system (CNS), and peripheral AQP4-expressing organs were usually spared. However, in recent years, increasing evidence has demonstrated that AQP4-IgG causes damage to peripheral organs beyond the CNS such as skeletal muscle, vestibulocochlear nerves, gastrointestinal tract, blood system, kidney, lung and placenta. Recently, the term "autoimmune aquaporin-4 channelopathy" has been proposed to incorporate a wide range of diseases associated with AQP4-IgG, including neuromyelitis optica spectrum disorders and AQP4-IgG-induced peripheral nerves system damage...
November 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29136601/no-neuronal-autoantibodies-detected-in-plasma-of-patients-with-a-bipolar-i-disorder
#6
Gijsje Snijders, Maarten J Titulaer, Veerle Bergink, Anna E Bastiaansen, Marco W J Schreurs, Roel A Ophoff, Marco P Boks, René S Kahn, Lot D de Witte
A subpopulation of patients with bipolar disorder type I (BD-I) might suffer from undiagnosed autoimmune encephalitis. We tested plasma of 104 BD-I patients with a current or recent manic episode in the past 2 years for the presence of neuronal autoantibodies using immunohistochemistry, immunocytochemistry and cell-based assay (CBA). Neuronal antibodies were not detected in any of the BD type I. This finding suggests that the frequency of an undiagnosed autoimmune encephalitis in patients with BD I is less than 1%...
November 2, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29131010/blockade-of-experimental-multiple-sclerosis-by-inhibition-of-the-acid-sphingomyelinase-ceramide-system
#7
Katrin Anne Becker, Ramona Halmer, Laura Davies, Brian D Henry, Regan Ziobro-Henry, Yann Decker, Yang Liu, Erich Gulbins, Klaus Fassbender, Silke Walter
BACKGROUND: Multiple sclerosis (MS) is a severe and common autoimmune disorder of the central nervous system. Despite the availability of several novel treatment options, the disease is still poorly controlled, since the pathophysiological mechanisms are not fully understood. METHODS: We tested the role of the acid sphingomyelinase/ceramide system in a model of MS, i.e. experimental autoimmune encephalomyelitis (EAE). Mice were immunized with myelin-oligodendrocyte glycoprotein and the development of the disease was analyzed by histology, immunological tests and clinical assessment in wildtype and acid sphingomyelinase (Asm)-deficient mice...
November 6, 2017: Neuro-Signals
https://www.readbyqxmd.com/read/29130141/sj%C3%A3-gren-s-syndrome-initially-presented-as-thrombotic-thrombocytopenic-purpura-in-a-male-patient-a-case-report-and-literature-review
#8
REVIEW
Xiaohan Xu, Tienan Zhu, Di Wu, Lu Zhang
Thrombotic thrombocytopenic purpura (TTP) is a potentially lethal multisystem disorder which could be caused by autoimmune diseases. However, the concomitant occurrence of TTP and Sjögren's syndrome (SS) is an extremely uncommon scenario, especially in male patients. A 56-year-old Chinese male was admitted for the appearance of diffuse ecchymosis. Then he gradually developed transient slurred speech, progressive confusion, agitation, extremity weakness, and fever. Laboratory investigations suggested anemia, thrombocytopenia, significantly increased lactic dehydrogenase, schistocytes in peripheral blood smear, and a disintegrin-like metalloproteinase with thrombospondin motif type 1 member 13 (ADAMTS13) activity deficiency with high inhibitor titers...
November 13, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/29125182/circulating-micrornas-as-potential-biomarkers-in-myasthenia-gravis-patients
#9
REVIEW
Anna Rostedt Punga, Tanel Punga
MicroRNAs (miRNAs) are small noncoding RNA molecules that bind to specific mRNA targets and regulate a wide range of important biological processes within cells. Circulating miRNAs are released into the extracellular space and can be measured in most biofluids, including blood serum and plasma. Recently, circulating miRNAs have emerged as easily accessible markers in various body fluids with different profiles and quantities specific for different human disorders, including autoimmune diseases. In myasthenia gravis (MG), diagnostic tests such as titers of serum autoantibodies specific for either the acetylcholine receptor (AChR(+) ) or muscle-specific tyrosine kinase (MuSK(+) ) do not necessarily reflect disease progression, and there is a great need for reliable objective biomarkers to monitor the disease course and therapeutic response...
November 10, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29125137/red-blood-cell-distribution-width-relative-lymphocyte-count-and-type-2-diabetes-mellitus-predict-all-cause-mortality-in-patients-with-advanced-heart-failure
#10
Bożena Szyguła-Jurkiewicz, Łukasz Siedlecki, Łukasz Pyka, Ewa Romuk, Piotr Przybyłowski, Mariusz Gąsior
INTRODUCTION    Early identification of patients with advanced heart failure (HF) who are at a higher risk for poor outcome is an important element of patient management, both from the medical and the economic point of view. OBJECTIVES    In the present study, we sought to determine the association between hematologic parameters assessed on admission and within the 3-year mortality period in patients consecutively admitted with advanced HF.  We also investigated the association between baseline demographic and clinical data and mortality...
November 9, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/29123521/good-manufacturing-practice-compliant-production-and-lot-release-of-ex-vivo-expanded-regulatory-t-cells-as-basis-for-treatment-of-patients-with-autoimmune-and-inflammatory-disorders
#11
Manuel Wiesinger, Diane Stoica, Susanne Roessner, Carmen Lorenz, Anika Fischer, Raja Atreya, Clemens F Neufert, Imke Atreya, Alexander Scheffold, Beatrice Schuler-Thurner, Markus F Neurath, Gerold Schuler, Caroline J Voskens
In recent years, the exploration of regulatory T cell (Treg)-based cellular therapy has become an attractive strategy to ameliorate inflammation and autoimmunity in various clinical settings. The main obstacle to the clinical application of Treg in human is their low number circulating in peripheral blood. Therefore, ex vivo expansion is inevitable. Moreover, isolation of Treg bears the risk of concurrent isolation of unwanted effector cells, which may trigger or deteriorate inflammation upon adoptive Treg transfer...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29114250/a-sensitive-method-for-detecting-peptide-specific-cd4-t-cell-responses-in-peripheral-blood-from-patients-with-myasthenia-gravis
#12
Sapna Sharma, Clas Malmeström, Christopher Lindberg, Sarah Meisel, Karin Schön, Martina Verolin, Nils Yngve Lycke
Myasthenia gravis (MG) is an autoimmune neurological disorder typified by skeletal muscle fatigue and most often production of autoantibodies against the nicotinic acetylcholine receptor (AChR). The present study was undertaken to assess the extent of AChR-peptide recognition in MG patients using co-culturing (DC:TC) of autologous monocyte-derived dendritic cells (moDCs) and highly enriched CD4(+) T cells from the blood as compared to the traditional whole peripheral blood mononuclear cell (PBMC) cultures. We found that the DC:TC cultures were highly superior to the PBMC cultures for detection of reactivity toward HLA-DQ/DR-restricted AChR-peptides...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29111419/diagnosis-of-multiple-system-atrophy
#13
REVIEW
Jose-Alberto Palma, Lucy Norcliffe-Kaufmann, Horacio Kaufmann
Multiple system atrophy (MSA) may be difficult to distinguish clinically from other disorders, particularly in the early stages of the disease. An autonomic-only presentation can be indistinguishable from pure autonomic failure. Patients presenting with parkinsonism may be misdiagnosed as having Parkinson disease. Patients presenting with the cerebellar phenotype of MSA can mimic other adult-onset ataxias due to alcohol, chemotherapeutic agents, lead, lithium, and toluene, or vitamin E deficiency, as well as paraneoplastic, autoimmune, or genetic ataxias...
October 23, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/29101363/plasmodium-dna-mediated-tlr9-activation-of-t-bet-b-cells-contributes-to-autoimmune-anaemia-during-malaria
#14
J Rivera-Correa, J J Guthmiller, R Vijay, C Fernandez-Arias, M A Pardo-Ruge, S Gonzalez, N S Butler, A Rodriguez
Infectious pathogens contribute to the development of autoimmune disorders, but the mechanisms connecting these processes are incompletely understood. Here we show that Plasmodium DNA induces autoreactive responses against erythrocytes by activating a population of B cells expressing CD11c and the transcription factor T-bet, which become major producers of autoantibodies that promote malarial anaemia. Additionally, we identify parasite DNA-sensing through Toll-like receptor 9 (TLR9) along with inflammatory cytokine receptor IFN-γ receptor (IFN-γR) as essential signals that synergize to promote the development and appearance of these autoreactive T-bet(+) B cells...
November 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/29099860/autoimmunity-and-autoinflammation-a-systems-view-on-signaling-pathway-dysregulation-profiles
#15
Arsen Arakelyan, Lilit Nersisyan, David Poghosyan, Lusine Khondkaryan, Anna Hakobyan, Henry Löffler-Wirth, Evie Melanitou, Hans Binder
INTRODUCTION: Autoinflammatory and autoimmune disorders are characterized by aberrant changes in innate and adaptive immunity that may lead from an initial inflammatory state to an organ specific damage. These disorders possess heterogeneity in terms of affected organs and clinical phenotypes. However, despite the differences in etiology and phenotypic variations, they share genetic associations, treatment responses and clinical manifestations. The mechanisms involved in their initiation and development remain poorly understood, however the existence of some clear similarities between autoimmune and autoinflammatory disorders indicates variable degrees of interaction between immune-related mechanisms...
2017: PloS One
https://www.readbyqxmd.com/read/29092665/the-agonistic-autoantibodies-to-the-angiotensin-ii-type-1-receptor-in-pregnancies-complicated-by-hypertensive-disorders
#16
Agata Szpera-Gozdziewicz, Tomasz Gozdziewicz, Przemysław Wirstlein, Ewa Wender-Ozegowska, Grzegorz H Breborowicz
INTRODUCTION: The etiology and pathogenesis of pregnancy-related hypertensive disorders is complex and multifactorial. The aim of our study is the investigation of the differences in the autoantibodies against angiotensin II type 1 receptor (AT1-AA) titers among pregnant patients with chronic hypertension, gestational hypertension and preeclampsia compared to the healthy pregnant women. PATIENTS AND METHODS: We created 3 study groups (preeclampsia [n = 16], chronic hypertension [n = 13], gestational hypertension [n = 17]) and the control group consisting of 17 healthy pregnant women...
November 1, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29079885/therapeutic-potential-of-curcumin-for-multiple-sclerosis
#17
Munibah Qureshi, Ebtesam A Al-Suhaimi, Fazli Wahid, Omer Shehzad, Adeeb Shehzad
Multiple sclerosis (MS) is a chronic autoimmune inflammatory disease of the central nervous system (CNS), characterized by demyelination, neuronal injury, and breaching of the blood-brain barrier (BBB). Epidemiological studies have shown that immunological, genetic, and environmental factors contribute to the progression and development of MS. T helper 17 (Th17) cells are crucial immunological participant in the pathophysiology of MS. The aberrant production of IL-17 and IL-22 by Th17 cells crosses BBB promotes its disruption and interferes with transmission of nerve signals through activation of neuroinflammation in the CNS...
October 27, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/29072508/the-aquaporin-4-water-channel-as-a-potential-drug-target-in-neurological-disorders
#18
Alan S Verkman, Alex J Smith, Puay-Wah Phuan, Lukmanee Tradtrantip, Marc O Anderson
Aquaporin-4 (AQP4) is a water transporting protein expressed at the plasma membrane of astrocytes throughout the central nervous system (CNS). Analysis of AQP4 knockout mice has suggested its broad involvement in brain water balance, neuroexcitation, glial scarring, neuroinflammation, and even neurodegenerative and neuropsychiatric disorders. Broad clinical utility of AQP4 modulators has been speculated. Area covered: This review covers the biology of AQP4, evidence for its roles in normal CNS function and neurological disorders, and progress in AQP4 drug discovery...
December 2017: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/29051963/applications-of-particulate-oxygen-generating-substances-pogs-in-the-bioartificial-pancreas
#19
John P McQuilling, Sivanandane Sittadjody, Samuel Pendergraft, Alan C Farney, Emmanuel C Opara
Type-1 Diabetes (T1D) is a devastating autoimmune disorder which results in the destruction of beta cells within the pancreas. A promising treatment strategy for T1D is the replacement of the lost beta cell mass through implantation of immune-isolated microencapsulated islets referred to as the bioartificial pancreas. The goal of this approach is to restore blood glucose regulation and prevent the long-term comorbidities of T1D without the need for immunosuppressants. A major requirement in the quest to achieve this goal is to address the oxygen needs of islet cells...
November 21, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/29039351/epidemiology-risk-factors-and-prognosis-of-interferon-alpha-induced-thyroid-disorders-a-prospective-clinical-study
#20
Łukasz Obołończyk, Małgorzata Siekierska-Hellmann, Piotr Wiśniewski, Anna Lewczuk, Monika Berendt-Obołończyk, Anna Lakomy, Zofia Michalska, Danuta Radowska, Grażyna Moszkowska, Agnieszka Bianek-Bodzak, Krzysztof Sworczak
INTRODUCTION: Hepatitis C virus (HCV) infection is a worldwide problem and hepatitis, which is its natural unfavourable course, is still a challenge for hepatologist. At present, standards of treatment are changing from combined therapy with interferon alpha (IFN-α) and ribavirin to new antiviral drugs. The current classification divides interferon induced thyroid diseases (IITD) into two groups: autoimmune (Hashimoto disease, Graves disease, positive antithyroid autoantibodies in euthyroid patients) and non-autoimmune (destructive thyroiditis, non-autoimmune hypothyroidism)...
September 25, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
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