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Lupus biomarker

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https://www.readbyqxmd.com/read/28341873/exploring-the-plasmatic-platelet-activating-factor-acetylhydrolase-activity-in-patients-with-anti-phospholipid-antibodies
#1
Martina Fabris, Adriana Cifù, Cinzia Pistis, Massimo Siega-Ducaton, Desrè Ethel Fontana, Roberta Giacomello, Elio Tonutti, Francesco Curcio
PURPOSE: To explore the role of plasmatic platelet-activating factor acetylhydrolase (PAF-AH), a marker of cardiovascular risk, in patients with anti-phospholipid antibodies (aPL). METHODS: PAF-AH activity was assessed in a series of 167 unselected patients screened for aPL in a context of thrombotic events, risk of thrombosis or obstetric complications and in 77 blood donors. RESULTS: 116/167 patients showed positive results for at least one aPL among IgG/IgM anti-prothrombin/phosphatidylserine (aPS/PT), anti-cardiolipin (aCL), anti-beta2-glycoprotein I (aβ2GPI) or lupus anticoagulant (LAC), while 51/167 patients resulted aPL-negative...
December 2017: Auto- Immunity Highlights
https://www.readbyqxmd.com/read/28339802/alterations-in-urinary-collagen-peptides-in-lupus-nephritis-subjects-correlate-with-renal-dysfunction-and-renal-histopathology
#2
Ru Wei, Benbo Gao, Fei Shih, Ann Ranger, Andrea Dearth, Harald Mischak, Justyna Siwy, Nicolas Wisniacki, Michelle Petri, Linda C Burkly
Background.: The excessive accumulation of extracellular matrix (ECM) in the renal tubulointerstitium is a key component of chronic renal damage in lupus nephritis (LN) and a critical determinant of the disease progression to renal failure. Detection of fibrosis requires renal biopsy and is therefore limited by high risks associated with an invasive procedure. This study explores whether a unique LN urinary peptidome can be identified and whether LN-specific alteration reflects the underlying fibrogenic process of altered ECM turnover...
February 23, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28326889/aquaporin-4-autoimmunity-in-patients-with-systemic-lupus-erythematosus-a-predominantly-population-based-study
#3
Nasrin Asgari, Sven Jarius, Helle Laustrup, Hanne Pb Skejoe, Soeren T Lillevang, Brian G Weinshenker, Anne Voss
BACKGROUND: Serum immunoglobulin G targeting the astrocyte water channel aquaporin-4 (AQP4) in the central nervous system (CNS) is a biomarker for neuromyelitis optica spectrum disease (NMOSD). Co-existence of NMOSD with systemic lupus erythematosus (SLE) putatively suggests susceptibility to antibody-mediated autoimmune disease. OBJECTIVE: To estimate the prevalence of NMOSD in SLE and investigate the immunogenetic background for an association of NMOSD and SLE...
March 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28300543/antibodies-against-monomeric-c-reactive-protein-a-promising-biomarker-of-lupus-nephritis
#4
Katarzyna Jakuszko, Magdalena Krajewska, Katarzyna Kościelska-Kasprzak, Marta Myszka, Agata Sebastian, Katarzyna Gniewek, Piotr Wiland, Marian Klinger
OBJECTIVE AND AIM: A significant incidence of systemic lupus erythematosus (SLE), the severity of lupus nephritis and varying responses to treatment rationalize the search for novel biomarkers of disease activity. The aim of the study was to assess whether antibodies against monomeric C reactive protein (anti-mCRP) are associated with the presence of lupus nephritis, correlate with disease activity, and whether they can serve to evaluate a response to treatment. METHODS: The study involved 74 patients with lupus nephritis, 29 patients with systemic lupus without renal involvement and 31 patients with primary glomerulonephritis; the control group included 31 healthy volunteers...
March 11, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28293128/exhaled-nitric-oxide-in-systemic-sclerosis-lung-disease
#5
Natalie K Kozij, John T Granton, Philip E Silkoff, John Thenganatt, Shobha Chakravorty, Sindhu R Johnson
Background. Exhaled nitric oxide (eNO) is a potential biomarker to distinguish systemic sclerosis (SSc) associated pulmonary arterial hypertension (PAH) and interstitial lung disease (ILD). We evaluated the discriminative validity, feasibility, methods of eNO measurement, and magnitude of differences across lung diseases, disease-subsets (SSc, systemic lupus erythematosus), and healthy-controls. Methods. Consecutive subjects in the UHN Pulmonary Hypertension Programme were recruited. Exhaled nitric oxide was measured at 50 mL/s intervals using chemiluminescent detection...
2017: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/28257602/the-biomarkers-of-lupus-disease-study-a-bold-approach-may-mitigate-interference-of-background-immunosuppressants-in-clinical-trials
#6
Joan T Merrill, Fred Immermann, Maryann Whitley, Tianhui Zhou, Andrew Hill, Margot O'Toole, Padmalatha Reddy, Marek Honczarenko, Aikaterini Thanou, Joe Rawdon, Joel M Guthridge, Judith A James, Sudhakar Sridharan
OBJECTIVES: Molecular medicine raised expectations for strategically targeted biologics in systemic lupus erythematosus (SLE), but clinical trials have been disappointing and difficult to interpret. Most studies add investigational agents to various, often effective, standard of care (SoC) immunosuppressants used at baseline, with unknown treatment interactions. Eliminating polypharmacy in trials of active lupus patients remains controversial. The BOLD study tested immunosuppressant withdrawal as a novel approach to interpretable SLE trials...
March 3, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28245520/autoantibodies-to-box-a-of-high-mobility-group-box-1-in-systemic-lupus-erythematosus
#7
F Schaper, K de Leeuw, G Horst, F Maas, H Bootsma, P Heeringa, P C Limburg, J Westra
OBJECTIVE: Auto-antibodies to nuclear structures are a hallmark of systemic lupus erythematosus (SLE), including auto-antibodies to nuclear protein High Mobility Group Box-1 (HMGB1). HMGB1 consists of three separate domains: Box A, Box B and an acidic tail. Recombinant Box A acts as a competitive antagonist for HMGB1 and might be an interesting treatment option in SLE. However, antibodies to Box A might interfere. Therefore, levels of anti-Box A were examined in SLE patients in association with disease activity and clinical parameters...
February 28, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28219195/-expression-and-clinical-significance-of-semaphorin-3a-in-serum-and-mononuclear-cells-in-patients-with-systemic-lupus-erythematosus
#8
H Gao, X X Ma, Q Guo, Y D Zou, Y C Zhong, L F Xie, M Shao, X W Zhang
Objective: To determine the expression of Sema3A in serum and peripheral blood mononuclear cells (PBMC) of patients with systemic lupus erythematosus (SLE), to analysis the correlation of Sema3A expression and SLE clinical manifestations and laboratory indexes, and to evaluate the diagnostic value of Sema3A in patients with SLE. Methods: The concentration of serum Sema3A was detected by enzyme-linked immuno sorbent assay (ELISA) in patients with SLE, healthy controls (HC) and diseases controls. In addition, the mRNA expression level of Sema3A was examined in PBMC by real-time polymerase chain reaction...
February 7, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28215100/targeting-baff-and-april-in-systemic-lupus-erythematosus-and-other-antibody-associated-diseases
#9
Eileen Samy, Stephen Wax, Bertrand Huard, Henry Hess, Pascal Schneider
The B cell-stimulating molecules, BAFF (B cell activating factor) and APRIL (a proliferation-inducing ligand), are critical factors in the maintenance of the B cell pool and humoral immunity. In addition, BAFF and APRIL are involved in the pathogenesis of a number of human autoimmune diseases, with elevated levels of these cytokines detected in the sera of patients with systemic lupus erythematosus (SLE), IgA nephropathy, Sjögren's syndrome, and rheumatoid arthritis. As such, both molecules are rational targets for new therapies in B cell-driven autoimmune diseases, and several inhibitors of BAFF or BAFF and APRIL together have been investigated in clinical trials...
January 2, 2017: International Reviews of Immunology
https://www.readbyqxmd.com/read/28212922/organ-specific-biomarkers-in-lupus
#10
REVIEW
Haijing Wu, Jinrong Zeng, Jinghua Yin, Qiao Peng, Ming Zhao, Qianjin Lu
Systemic lupus erythematosus (SLE) is a complex and highly heterogeneous disease, which affects multiple organs, including joints, skin, kidneys, heart, hematopoietic system, and nerve system. While the etiopathogenesis of SLE still remains unclear, genetic susceptibilities and aberrant epigenetic modifications are believed to be involved. For precision therapy, it is necessary to assess accurately and objectively organ involvements and disease activity, which is difficult by current clinical laboratory tests...
February 14, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28167944/intestinal-dysbiosis-is-associated-with-altered-short-chain-fatty-acids-and-serum-free-fatty-acids-in-systemic-lupus-erythematosus
#11
Javier Rodríguez-Carrio, Patricia López, Borja Sánchez, Sonia González, Miguel Gueimonde, Abelardo Margolles, Clara G de Los Reyes-Gavilán, Ana Suárez
Metabolic impairments are a frequent hallmark of systemic lupus erythematosus (SLE). Increased serum levels of free fatty acids (FFA) are commonly found in these patients, although the underlying causes remain elusive. Recently, it has been suggested that factors other than inflammation or clinical features may be involved. The gut microbiota is known to influence the host metabolism, the production of short-chain fatty acids (SCFA) playing a potential role. Taking into account that lupus patients exhibit an intestinal dysbiosis, we wondered whether altered FFA levels may be associated with the intestinal microbial composition in lupus patients...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28161558/neutrophil-perversion-in-demyelinating-autoimmune-diseases-mechanisms-to-medicine
#12
REVIEW
Courtney S Casserly, Julia C Nantes, Ryder F Whittaker Hawkins, Luc Vallières
Neutrophils are essential to a healthy life, yet pose a threat if improperly controlled. Neutrophil perversion is well documented in a variety of inflammatory disorders (e.g. arthritis, lupus, psoriasis), but is only beginning to be demystified in autoimmune demyelination, the most common cause of neurological disability in young adults. Using the animal model experimental autoimmune encephalomyelitis (EAE), several molecules that help neutrophils invade the central nervous system (CNS) have been identified...
March 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28147328/autoantibody-to-mdm2-a-potential-serological-marker-of-primary-sjogren-s-syndrome
#13
Yuan Liu, Xining Liao, Ying Wang, Shiju Chen, Yuechi Sun, Qingyan Lin, Guixiu Shi
INTRODUCTION: Primary Sjogren's Syndrome (pSS) is one of the autoimmune diseases characterized by polyclonal autoantibody production. The human homologue of the mouse double minute 2 (MDM2) is an important negative regulator of p53. Our previous study indicated that autoantibody to MDM2 can be detected in systemic lupus erythematosus patients. The purpose of this study is to study anti-MDM2 autoantibody in pSS patients. METHODS: Anti-MDM2 autoantibody in sera from 100 pSS patients and 74 normal controls was investigated by ELISA...
January 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28130494/oxidized-low-density-lipoprotein-immune-complex-priming-of-the-nlrp3-inflammasome-involves-tlr-and-fc%C3%AE-r-cooperation-and-is-dependent-on-card9
#14
Jillian P Rhoads, John R Lukens, Ashley J Wilhelm, Jared L Moore, Yanice Mendez-Fernandez, Thirumala-Devi Kanneganti, Amy S Major
Oxidized low-density lipoprotein (oxLDL) is known to activate inflammatory responses in a variety of cells, especially macrophages and dendritic cells. Interestingly, much of the oxLDL in circulation is complexed to Abs, and these resulting immune complexes (ICs) are a prominent feature of chronic inflammatory disease, such as atherosclerosis, type-2 diabetes, systemic lupus erythematosus, and rheumatoid arthritis. Levels of oxLDL ICs often correlate with disease severity, and studies demonstrated that oxLDL ICs elicit potent inflammatory responses in macrophages...
March 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28120479/urinary-haptoglobin-alpha-1-anti-chymotrypsin-and-retinol-binding-protein-identified-by-proteomics-as-potential-biomarkers-for-lupus-nephritis
#15
Amita Aggarwal, Ranjan Gupta, V S Negi, Liza Rajasekhar, Ramnath Misra, Padam Singh, Vinita Chaturvedi, Sudhir Sinha
OBJECTIVE: Identification by proteomics and validation by ELISA of potential urinary biomarkers for lupus nephritis. METHODS: Study subjects comprised 88 systemic lupus erythematosus (SLE) patients and 60 controls (rheumatoid arthritis, diabetes mellitus and healthy individuals). Based on SLE disease activity index (SLEDAI) patients were classified as active renal (AR), active non-renal (ANR) or inactive disease (ID).Urinary proteins from a group of patients with AR or ID were resolved by two-dimensional gel electrophoresis and identified by MALDI-TOF-MS/MS...
January 24, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28118537/pharmacodynamics-safety-and-clinical-efficacy-of-amg-811-a-human-anti-interferon-%C3%AE-antibody-in-subjects-with-discoid-lupus-erythematosus
#16
Victoria P Werth, David Fiorentino, Barbara A Sullivan, Michael J Boedigheimer, Kit Chiu, Christine Wang, Gregory E Arnold, Michael A Damore, Jeannette Bigler, Andrew A Welcher, Chris B Russell, David A Martin, James B Chung
OBJECTIVE: Interferon (IFN)-γ is implicated in the pathogenesis of discoid lupus erythematosus (DLE). This study evaluated a single dose of AMG 811, an anti-IFN-γ antibody, in subjects with DLE. METHODS: This was a phase 1, randomized, double-blind, placebo-controlled, crossover study (sequence 1: AMG 811 followed by placebo; sequence 2: placebo followed by AMG 811). Subjects received a single subcutaneous dose of AMG 811 (180 mg) or placebo. Pharmacodynamic endpoints included global transcriptional analyses of lesional and nonlesional skin, IFN-γ Blockade Signature (IGBS) transcriptional score in skin and blood, keratinocyte IFN-γ RNA score, and serum CXCL-10 protein...
January 24, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28102737/platelet-microvesicles-in-health-and-disease
#17
Imene Melki, Nicolas Tessandier, Anne Zufferey, Eric Boilard
Interest in cell-derived extracellular vesicles and their physiological and pathological implications is constantly growing. Microvesicles, also known as microparticles, are small extracellular vesicles released by cells in response to activation or apoptosis. Among the different microvesicles present in the blood of healthy individuals, platelet-derived microvesicles (PMVs) are the most abundant. Their characterization has revealed a heterogeneous cargo that includes a set of adhesion molecules. Similarly to platelets, PMVs are also involved in thrombosis through support of the coagulation cascade...
January 19, 2017: Platelets
https://www.readbyqxmd.com/read/28089970/spatial-working-memory-impairment-in-patients-with-non-neuropsychiatric-systemic-lupus-erythematosus-a-blood-oxygen-level-dependent-functional-magnetic-resonance-imaging-study
#18
Chun-Min Zhu, Ye Ma, Lei Xie, Jin-Zhuang Huang, Zong-Bo Sun, Shou-Xing Duan, Zhi-Rong Lin, Jing-Jing Yin, Hong-Bo Le, Dan-Miao Sun, Wen-Can Xu, Shu-Hua Ma
OBJECTIVE: Using ethology and functional magnetic resonance imaging (fMRI) to explore mild cognitive dysfunction and spatial working memory (WM) impairment in patients with systemic lupus erythematosus (SLE) without overt neuropsychiatric symptoms (non-NPSLE) and to study whether any clinical biomarkers could serve as predictors of brain dysfunction in this disease. METHODS: Eighteen non-NPSLE patients and 18 matched subjects were all tested using the Montreal cognitive assessment scale test and scanned using blood-oxygen-level dependent fMRI while performing the n-back task to investigate the activation intensity of some cognition-related areas...
January 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28053878/microparticle-subpopulations-are-potential-markers-of-disease-progression-and-vascular-dysfunction-across-a-spectrum-of-connective-tissue-disease
#19
E M McCarthy, D Moreno-Martinez, F L Wilkinson, N J McHugh, I N Bruce, J D Pauling, M Y Alexander, B Parker
OBJECTIVE: Microparticles (MPs) are membrane-bound vesicles derived from vascular and intravascular cells such as endothelial cells (EMPs) and platelets (PMPs). We investigated EMP and PMP numbers across a spectrum of autoimmune rheumatic diseases (AIRDs) with the aim of comparing the levels of, and relationship between, EMPs and PMPs. METHODS: Patients with Systemic Lupus Erythematosus (SLE) (n = 24), Systemic Sclerosis (SSc) (n = 24), Primary Raynauds Phenomenon (RP) (n = 17) and "other CTD" (n = 15) (Primary Sjogrens Syndrome, UCTD or MCTD) as well as 15 healthy controls were recruited...
June 2017: BBA Clinical
https://www.readbyqxmd.com/read/28053277/auto-antibodies-to-double-stranded-dna-as-biomarker-in-systemic-lupus-erythematosus-comparison-of-different-assays-during-quiescent-and-active-disease
#20
Karina de Leeuw, Laura Bungener, Caroline Roozendaal, Hendrika Bootsma, Coen A Stegeman
OBJECTIVE: Auto-antibodies directed to dsDNA (anti-dsDNA) are used in diagnosis and follow-up for SLE. However, multiple assays are used. The objective of this study was to determine the best-performing assays, especially in prediction of exacerbations. METHODS: Seven assays were compared during LN (n = 58). The two assays with the most frequent positive results during active nephritis were selected and tested in 152 SLE patients with quiescent disease, 40 with active disease and 214 disease controls...
January 3, 2017: Rheumatology
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