Read by QxMD icon Read

Mpo and lupus

Zahra Heidari, Hamidreza Mahmoudzadeh Sagheb, Nadia Sheibak
Objective: Reports of increased level of Myeloperoxidase (MPO) in plasma and placental extracts of Systematic Lupus Erythematosus (SLE) has been proposed that MPO may have an important role in this pregnancy complication. In present study immunohistochemical MPO expression was investigated in placental samples of SLE women compared with normal controls. Materials and methods: Ten patients with SLE were recruited as case group. Control group was selected from mothers with normal uncomplicated pregnancies. A monoclonal antibody specific for MPO was used for immunohistochemical staining and then the staining was quantified and differences between groups were compared using Mann-Whitney U test...
June 2016: Journal of Family & Reproductive Health
Namrata Singh, Duncan B Johnstone, Kayla A Martin, Italo Tempera, Mariana J Kaplan, Michael F Denny
Systemic lupus erythematosus (SLE) is an autoimmune disorder characterized by the development of autoantibodies that recognize components of the cell nucleus. The vast majority of lupus research has focused on either the contributions of immune cell dysfunction or the genetics of the disease. Because granulocytes isolated from human SLE patients had alterations in neutrophil nuclear morphology that resembled the Pelger-Huet anomaly, and had prominent mis-splicing of mRNA encoding the nuclear membrane protein lamin B receptor (LBR), consistent with their Pelger-Huet-like nuclear morphology, we used a novel mouse model system to test the hypothesis that a disruption in the structure of the nucleus itself also contributes to the development of lupus autoimmunity...
August 1, 2016: Disease Models & Mechanisms
Maria Luisa Fiorella, Matteo Gelardi, Andrea Marzullo, Elena Sabattini, Raffaele Fiorella
Kikuchi-Fujimoto's disease (KFD) is a rare, benign condition characterized by histiocytic necrotizing lymphadenitis predominantly in the cervical region and prolonged fever. It has a higher prevalence in the Japanese and Asian populations although it may be seen in a wide geographic distribution, but rare are the cases reported in Europe. While symptoms resolve spontaneously between 2 weeks and 2 months, complications are described in: CNS, eyes, respiratory tract, kidney and liver. KFD also described an association with systemic lupus erythematosus...
June 17, 2016: European Archives of Oto-rhino-laryngology
Pierre-Andre Jarrot, Laurent Chiche, Baptiste Hervier, Laurent Daniel, Vincent Vuiblet, Nathalie Bardin, Daniel Bertin, Benjamin Terrier, Zahir Amoura, Emmanuel Andrés, Eric Rondeau, Mohamed Hamidou, Jean-Loup Pennaforte, Philippe Halfon, Eric Daugas, Bertrand Dussol, Xavier Puéchal, Gilles Kaplanski, Noemie Jourde-Chiche
The aim of the study was to report the clinical, biological, and pathological characteristics of patients with glomerulonephritis (GN) secondary to systemic lupus erythematosus (SLE)/antineutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV) overlap syndrome.A nationwide survey was conducted to identify cases of SLE/AAV overlap syndrome. Data were collected from SLE and AAV French research groups. Inclusion criteria were diagnosis of both SLE and AAV according to international classification criteria and biopsy-proven GN between 1995 and 2014...
May 2016: Medicine (Baltimore)
Shuzo Sato, Makiko Yashiro, Naoki Matsuoka, Manabu Uematsu, Tomoyuki Asano, Hiroko Kobayashi, Hiroshi Watanabe, Hiromasa Ohira
Mixed connective tissue disease (MCTD) is characterized by a combination of clinical features of systemic lupus erythematosus, systemic sclerosis, and polymyositis with elevated antibodies to U1 small nuclear ribonucleoprotein (U1-RNP). MCTD is often accompanied by interstitial lung disease as pulmonary involvement. On the other hand, microscopic polyangiitis (MPA) is a systemic autoimmune disease characterized by the inflammation of small vessels (arterioles, capillaries, and venules) mainly affecting the lung and kidney...
2016: Tohoku Journal of Experimental Medicine
Sierra C Simmons, Maxwell L Smith, April Chang-Miller, Mira T Keddis
Lupus nephritis (LN) is a serious and common complication of systemic lupus erythematosus (SLE) that predisposes to significant morbidity and mortality. Studies show that prompt diagnosis and treatment improves patient survival. We present a case of a 49-year-old female with an atypical presentation of LN who initially presented with new-onset hypertension, edema, arthritis, serositis and recently diagnosed leukocytoclastic vasculitis who later developed acute kidney injury, hematuria and nephrotic syndrome...
2015: American Journal of Nephrology
Shira Ginsberg, Itzhak Rosner, Gleb Slobodin, Nina Boulman, Michael Rozenbaum, Lisa Kaly, Ofrat Katz Beyar, Doron Rimar
Anti-tumor necrosis factor (TNF) agents have become central players in the management of autoimmune and rheumatic disease. With the wide use of anti-TNF agents today, we have become aware of rare autoimmune complications as systemic lupus erythematosus and psoriasis, yet rarely has large vessels vasculitis been described. We herein describe a case of cytoplasmic anti-neutrophil cytoplasmic antibody (c-ANCA) (with myeloperoxidase (MPO) antibodies)-associated large vessel vasculitis (aortitis) that developed during anti-TNF treatment for ankylosing spondylitis...
January 2016: Clinical Rheumatology
Yoshikazu Abe, Tomoaki Shima, Yasumori Izumi, Mineaki Kitamura, Hiroshi Yamashita, Yoshika Tsuji, Osamu Sasaki, Chie Maeda, Chieko Kawahara, Ai Torisu, Yuuki Kawaguchi, Hirokazu Kurohama, Masahiro Ito, Nozomi Iwanaga, Atsushi Kawakami, Toshiyuki Nakayama, Takashi Taguchi, Kiyoshi Migita
A 63-year-old Japanese woman with a 30-year history of systemic lupus erythematosus developed macrohematuria and massive proteinuria after seroconversion of myeloperoxidase anti-neutrophil cytoplasmic antibodies (MPO-ANCA). A renal biopsy indicated focal proliferative lupus nephritis (class III A/C) with a fibrous crescent formation. Methylprednisolone pulse therapy (500 mg, 3 successive days) was administered because of progressive proteinuria. Steroid therapy did not suppress the progressive proteinuria; therefore, tacrolimus was added as an alternative immunosuppressive therapy, resulting in the improvement of proteinuria and renal impairment...
2015: Internal Medicine
Sigrid M C Broekaert, Almut Böer-Auer, Katrin Kerl, Ilka Herrgott, Xenia Schulz, Gisela Bonsmann, Randolf Brehler, Dieter Metze
BACKGROUND: Neutrophilic urticarial dermatosis (NUD) comprises a particular autoinflammatory condition within the spectrum of aseptic neutrophilic dermatoses characterized by a distinct urticarial eruption clinically and a neutrophilic dermatosis histopathologically. OBJECTIVE: In this study, we reviewed skin biopsies of lesional skin of patients seen in our outpatient clinic for autoimmune dermatoses and in allergy department from 1982 to 2014 that fulfilled these criteria...
January 2016: American Journal of Dermatopathology
Mirjana Gajic-Veljic, Branka Bonaci-Nikolic, Branislav Lekic, Dusan Skiljevic, Jasmina Ciric, Svetlana Zoric, Biljana Stojimirovic, Milos Nikolic
OBJECTIVE: To study the role of deoxyribonuclease (DNase) I activity and ANCA in propylthiouracil (PTU)-induced lupus-like syndrome (LLS). METHODS: We compared 36 SLE patients with 17 PTU-induced LLS patients diagnosed from 2008 to 2014. We studied ANCA profile (MPO, PR3, lactoferrin, CTG, elastase, bactericidal/permeability-increasing protein), anti-dsDNA, anti-ENA, anti-nucleosome, anti-histone, anti-C1q, anti-aCL, complement components, cryoglobulins and serum DNase I activity...
November 2015: Rheumatology
Peter C Grayson, Carmelo Carmona-Rivera, Lijing Xu, Noha Lim, Zhong Gao, Adam L Asare, Ulrich Specks, John H Stone, Philip Seo, Robert F Spiera, Carol A Langford, Gary S Hoffman, Cees G M Kallenberg, E William St Clair, Nadia K Tchao, Steven R Ytterberg, Deborah J Phippard, Peter A Merkel, Mariana J Kaplan, Paul A Monach
OBJECTIVE: To discover biomarkers involved in the pathophysiology of antineutrophil cytoplasmic antibody-associated vasculitis (AAV) and to determine whether low-density granulocytes (LDGs) contribute to gene expression signatures in AAV. METHODS: The source of clinical data and linked biologic specimens was a randomized controlled treatment trial in AAV. RNA sequencing of whole blood from patients with AAV was performed during active disease at the baseline visit and during remission 6 months later...
July 2015: Arthritis & Rheumatology
Deepak A Rao, Kevin Wei, Joseph F Merola, William R O'Brien, Samuel U Takvorian, Paul F Dellaripa, Peter H Schur
OBJECTIVE: Concurrent testing for serum antineutrophil cytoplasmic antibodies (ANCA) by indirect immunofluorescence (IF) and by antiproteinase 3 (PR3)/antimyeloperoxidase (MPO) antibody assays may identify patients with PR3-ANCA or MPO-ANCA despite a negative IF (IF-negative MPO/PR3-positive); however, the significance of this result is not clear. We sought to determine whether IF-negative, MPO/PR3-positive results identified any cases of clinically meaningful systemic vasculitis at our institution...
May 2015: Journal of Rheumatology
Dragana Odobasic, Ruth C M Muljadi, Kim M O'Sullivan, Anthony J Kettle, Nina Dickerhof, Shaun A Summers, A Richard Kitching, Stephen R Holdsworth
OBJECTIVE: Myeloperoxidase (MPO) locally contributes to organ damage in various chronic inflammatory conditions by generating reactive intermediates. The contribution of MPO in the development of experimental lupus is unknown. The aim of this study was to define the role of MPO in murine lupus nephritis (LN). METHODS: LN was induced in C57BL/6 wild-type (WT) and MPO knockout (MPO(-/-) ) mice by intraperitoneal injection of pristane. Autoimmunity and glomerulonephritis were assessed 20 and 40 weeks after pristane administration...
July 2015: Arthritis & Rheumatology
Dubravka Bobek, Jurica Vuković, Branko Malenica, Katarina Bojanić, Iva Rukavina, Marija Jelušić
Juvenile systemic lupus erythematosus (JSLE) is a systemic autoimmune chronic disease that can affect any part of the body. It is characterized by the formation of antibodies against nuclear antigens. Vasculitis may be found in SLE, but it scarcely complies with anti-neutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV) criteria. We report five cases of severe JSLE associated with AAV diagnosed between 1991 and 2013 in three university-based tertiary care centers. The patients (3 girls and 2 boys, aged 12 to 17) presented with a severe clinical picture and the following features: cytopenia (n=5), autoimmune hepatitis (n=3), lupus nephritis (n=1), pancreatitis (n=1), secondary antiphospholipid syndrome (n=2), impending respiratory failure (n=2), and gastrointestinal bleeding (n=1)...
2014: Acta Dermatovenerologica Croatica: ADC
Kusworini Handono, Yona One Sidarta, Benny A Pradana, Radhitio A Nugroho, Ivan A Hartono, Handono Kalim, Agustina T Endharti
AIM: to investigate the effects of Vitamin D calcitriol/1,25(OH)2D3 on NETosis in systemic lupus erythematosus (SLE) patients with hypovitamin D. METHODS: neutrophlis of five SLE patients with hypovitamin D were divided into 4 groups, P0 (0 nM/control), P1 (1 nM), P2 (10 nM), and P3 (100 nM) as cultured samples. Phorbol Myristate Acetate (PMA) was used to stimulate NETs formation. The supernatant was separated and cocultured with HUVECs. Externalization of Neutrophil Elastase (NE) and Myeloperoxidase (MPO) during NETosis was measured by immunofluorescence and ELISA respectively...
July 2014: Acta Medica Indonesiana
Takao Fujii
Autoantibody (autoAb) production in patients with systemic autoimmune diseases is a hallmark of disease entity, activity and prognosis. Although a large number of autoAbs have been discovered to date, there is a limited number of autoAbs whose pathogenic roles have been clearly determined. However, intriguing evidence has recently been provided of possible pathogenic roles for anti-neutrophil cytoplasmic Abs (ANCAs) against myeloperoxidase (MPO) in ANCA-associated vasculitides (AAV) and for anti-citrullinated protein Abs (ACPAs) in rheumatoid arthritis (RA)...
December 2014: Allergology International: Official Journal of the Japanese Society of Allergology
Wei Wang, Zijuan Jian, Jingjing Guo, Xingwang Ning
AIMS: The clinical significance of myeloperoxidase (MPO) has been the focus of investigation because it may contribute to the chronic, non-microbial inflammatory process in various diseases. Here, we determined serum MPO levels in rheumatoid arthritis (RA) and other autoimmune or inflammatory conditions, and investigated the associations between MPO levels and disease activity indicators in RA. MAIN METHODS: The distribution of MPO was determined in serum samples from patients with RA, systemic lupus erythematosus (SLE), primary Sjögren's syndrome (pSS), dermatomyositis (DM), or ankylosing spondylitis (AS) and from healthy controls using commercial ELISA kits...
November 4, 2014: Life Sciences
Zhi-Juan Hu, Kai Niu, Bing Liu, Ya-Nan Shi
Membranous nephropathy (MN) may be a primary disease or secondary to autoimmune conditions such as systemic lupus erythematosus, infection (for example, with hepatitis B or C virus), cancer or drugs. In primary MN, crescents are rarely observed. Therefore, the presence of crescents suggests another underlying disease, for example lupus nephritis, anti-glomerular basement membrane disease or anti-neutrophil cytoplasmic antibody-associated glomerulonephritis (ANCA-GN). The coexistence of primary MN and ANCA-GN is rare...
October 2014: Experimental and Therapeutic Medicine
Mary A Mahieu, Camelia P Guild, Carolyn J Albert, George T Kondos, James J Carr, Daniel Edmundowicz, David A Ford, Rosalind Ramsey-Goldman
OBJECTIVE: Alpha-chlorofatty acid (α-ClFA) is one product of myeloperoxidase activity in vivo during atherogenesis and may be a biomarker for cardiovascular disease (CVD). We investigated if serum α-ClFA is associated with subclinical CVD as measured by coronary artery and aorta calcium scores (CAC and AC, respectively) in women with and without systemic lupus erythematosus (SLE). METHODS: This pilot project analyzed baseline data from 173 women with SLE and 186 women without SLE participating in a 5-year longitudinal investigation of the Study of Lupus Vascular and Bone Long-term Endpoints (SOLVABLE)...
September 2014: Journal of Rheumatology
Goitybell Martínez Téllez, Bárbara Torres Rives, Suchiquil Rangel Velázquez, Vicky Sánchez Rodríguez, María Antonia Ramos Ríos, Lisset Evelyn Fuentes Smith
OBJECTIVE: To determine positivity and clinical correlation of anti-neutrophil cytoplasmic antibodies (ANCA), taking into account the interference of antinuclear antibodies (ANA). MATERIAL AND METHODS: A prospective study was conducted in the Laboratory of Immunology of the National Cuban Center of Medical Genetic during one year. Two hounded sixty-seven patients with indication for ANCA determination were included. ANCA and ANA determinations with different cut off points and assays were determined by indirect immunofluorescense...
January 2015: Reumatología Clinica
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"