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Complement c4

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https://www.readbyqxmd.com/read/30324882/lower-levels-of-vitamin-d-are-associated-with-disease-activity-and-low-complement-in-colombian-patients-with-systemic-lupus-erythematosus
#1
Ana Isabel Ospina-Caicedo, Alex Darío Cardona-Rincon, Juan Manuel Bello-Gualtero, Rafael Valle-Onate, Consuelo Romero-Sanchez, P Chalem-Choueka Philippe, Gloria Vasquez Duque
BACKGROUND: Systemic Lupus Erythematosus [SLE] involves genetic, environmental, and hormonal alterations, including Vitamin D deficiency. OBJECTIVE: To evaluate the association between vitamin D levels with anti-dsDNA, complement proteins, immunoglobulins levels and disease activity scores Methods: A cross-sectional study was performed. The levels of 25-OH vitamin D were measured in patients older than 18 years with SLE according to ACR/97 [American College of Rheumatology 1997] from 2013 to 2015...
October 15, 2018: Current Rheumatology Reviews
https://www.readbyqxmd.com/read/30323030/the-pneumococcal-surface-proteins-pspa-and-pspc-sequester-host-c4-binding-protein-to-inactivate-complement-c4b-on-the-bacterial-surface
#2
Kashif S Haleem, Youssif M Ali, Hasan Yesilkaya, Thomas Kohler, Sven Hammerschmidt, Peter W Andrew, Wilhelm J Schwaeble, Nicholas J Lynch
Complement is a critical component of antimicrobial immunity. Various complement regulatory proteins prevent host cells from being attacked. Many pathogens have acquired the ability to sequester complement regulators from host plasma to evade complement attack. Here we describe how Streptococcus pneumoniae adopts a strategy to prevent the formation of the C3 convertase, C4bC2a, by the rapid conversion of surface bound C4b and iC4b into C4dg, which remains bound to the bacterial surface but no longer forms a convertase complex...
October 15, 2018: Infection and Immunity
https://www.readbyqxmd.com/read/30309286/progressive-reduction-of-serum-complement-levels-a-risk-factor-for-relapse-in-patients-with-hypocomplementemia-in-systemic-lupus-erythematosus
#3
Y Miyawaki, K Sada, Y Asano, K Hayashi, Y Yamamura, S Hiramatsu, K Ohashi, M Morishita, H Watanabe, Y Matsumoto, T Kawabata, J Wada
Objective Serologically active clinically quiescent (SACQ)-SLE is a subtype of systemic lupus erythematosus (SLE); most SACQ-SLE patients relapse. Although complement and/or anti-dsDNA level fluctuations during SACQ status are reportedly not useful for predicting relapse, they might be useful in specific clinical settings. We aimed to assess the correlation between future relapse and progressive reductions in serum complement levels following remission in patients with hypocomplementemia . Methods We retrospectively reviewed patients aged ≥15 years who were treated with ≥20 mg/day of prednisolone for remission induction...
October 11, 2018: Lupus
https://www.readbyqxmd.com/read/30300717/elbasvir-plus-grazoprevir-for-patients-with-chronic-hepatitis-c-genotype-1-a-multicenter-real-world-cohort-study-focusing-on-chronic-kidney-disease
#4
Eiichi Ogawa, Norihiro Furusyo, Koichi Azuma, Makoto Nakamuta, Hideyuki Nomura, Kazufumi Dohmen, Takeaki Satoh, Akira Kawano, Toshimasa Koyanagi, Aritsune Ooho, Kazuhiro Takahashi, Masaki Kato, Shinji Shimoda, Eiji Kajiwara, Jun Hayashi
The real-world effectiveness and safety of all-oral direct-acting antivirals (DAAs) for chronic hepatitis C (HCV) infection and chronic kidney disease (CKD) have not been fully elucidated. This study assesses elbasvir (EBR) plus grazoprevir (GZR) for patients with HCV genotype 1 infection in the clinical setting, focusing on CKD stage 3-5D. This multicenter, real-world cohort study consisted of 282 Japanese patients who were treated with EBR (50 mg) plus GZR (100 mg) for a fixed 12-week duration. We evaluated the sustained viral response rate 12 weeks after the end of treatment (SVR12), longitudinal liver and renal parameters, and adverse effects according to the cirrhosis and CKD status...
October 6, 2018: Antiviral Research
https://www.readbyqxmd.com/read/30294950/blood-concentrations-of-complement-split-product-ic3b-and-serum-c3-associate-with-sle-disease-activity
#5
Alfred H J Kim, Vibeke Strand, Deepali P Sen, Qiang Fu, Nancy L Mathis, Martin J Schmidt, Robin R Bruchas, Nick R Staten, Paul K Olson, Chad M Stiening, John P Atkinson
OBJECTIVE: To examine correlations between blood levels of complement split product iC3b and serum component C3 with clinically meaningful changes in disease activity in patients with systemic lupus erythematosus (SLE). METHODS: 159 consecutive subjects with American College of Rheumatology or Systemic Lupus International Collaborating Clinics classified SLE were enrolled into CASTLE (Complement Activation Signatures in Systemic Lupus Erythematosus), a prospective observational study...
October 8, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/30286829/diagnostic-utility-of-complement-serology-for-atypical-hemolytic-uremic-syndrome
#6
Meera Sridharan, Ronald S Go, Roshini S Abraham, Fernando C Fervenza, Sanjeev Sethi, Sandra C Bryant, Grant M Spears, David L Murray, Maria A V Willrich
OBJECTIVE: To investigate the clinical utility of a 9-analyte complement serology panel (COMS) covering complement function (CH50 and AH50), components (C3, C4), factor B (CFB), factor H, and activation markers (C4d, Bb, and soluble membrane attack complex) for the diagnosis of atypical hemolytic uremic syndrome (aHUS). METHODS: Physician orders for COMS from January 19, 2015, through November 4, 2016, were reviewed. Demographic characteristics, patient diagnosis, and laboratory parameters were recorded...
October 2018: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/30266607/do-the-toll-like-receptors-and-complement-systems-play-equally-important-roles-in-freshwater-adapted-dolly-varden-char-salvelinus-malma
#7
Fanxing Meng, Yuanyuan Zhang, Jianbo Zhou, Ming Li, Ge Shi, Rixin Wang
Unlike the normal anadromous lifestyle, Chinese native Dolly Varden char (Salvelinus malma) is locked in land and lives in fresh water lifetime. To explore the effect of freshwater adaption on its immune system, we constructed a pooled cDNA library of hepatopancreas and spleen of Chinese freshwater Dolly Varden char (S. malma). A total of 27,829 unigenes were generated from 31,233 high-quality transcripts and 17,670 complete open reading frames (ORF) were identified. Totally 25,809 unigenes were successfully annotated and it classified more native than adaptive immunity-associated genes, and more genes involved in toll-like receptor signal pathway than those in complement and coagulation cascades (51 vs 3), implying the relative more important role of toll-like receptors than the complement system under bacterial injection for the freshwater Dolly Varden char...
September 25, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/30258502/assessment-of-mean-platelet-volume-in-patients-with-systemic-lupus-erythematosus
#8
Lisandra Torres Hartmann, Ana Paula Alegretti, Alice Beatriz Mombach Pinheiro Machado, Eduardo Ferreira Martins, Rafael Mendonça da Silva Chakr, Andrese Aline Gasparin, Odirlei André Monticielo
Introduction: The Mean Platelet Volume (MPV) is a platelet activation biomarker that has been recently correlated with disease activity in SLE. We aimed to evaluate the MPV in patients with SLE comparing it with healthy individuals, to study the correlation between MPV and SLE Disease Activity Index (SLEDAI) in SLE patients and to analyze possible correlation between MPV and Erythrocyte Sedimentation Rate (ESR), C-Reactive Protein (CRP), and complement components C3 and C4. Methods: This is a cross-sectional study in which 81 patients with SLE according to the American College of Rheumatology (ACR) diagnostic classification criteria and 58 healthy controls were included...
2018: Open Rheumatology Journal
https://www.readbyqxmd.com/read/30255743/serum-proteome-profiling-to-identify-proteins-promoting-pathogenesis-of-non-atopic-asthma
#9
Samina Ejaz, Faiz Ul-Hassan Nasim, Muhammad Ashraf, Sami Ahmad
BACKGROUND: Asthma is the inflammatory disorder of airways highly prevalent in both, children and adults all over the world. The aim of this study was to investigate the serum proteome for the identification of proteins contributing to the pathogenesis of non-atopic asthma. METHODS: Protein expression profiling of sera from non-atopic asthmatic patients (n=73) and controls (n=99) was carried out using 1D SDS PAGE. Differentially expressed protein bands were compared with controls, cut from the gel and identified by LC-Q-TOF_MSMS analysis...
September 25, 2018: Protein and Peptide Letters
https://www.readbyqxmd.com/read/30248096/optmdfpathway-identification-of-metabolic-pathways-with-maximal-thermodynamic-driving-force-and-its-application-for-analyzing-the-endogenous-co2-fixation-potential-of-escherichia-coli
#10
Oliver Hädicke, Axel von Kamp, Timur Aydogan, Steffen Klamt
Constraint-based modeling techniques have become a standard tool for the in silico analysis of metabolic networks. To further improve their accuracy, recent methodological developments focused on integration of thermodynamic information in metabolic models to assess the feasibility of flux distributions by thermodynamic driving forces. Here we present OptMDFpathway, a method that extends the recently proposed framework of Max-min Driving Force (MDF) for thermodynamic pathway analysis. Given a metabolic network model, OptMDFpathway identifies both the optimal MDF for a desired phenotypic behavior as well as the respective pathway itself that supports the optimal driving force...
September 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/30244532/discovery-of-restless-legs-syndrome-plasmatic-biomarkers-by-proteomic-analysis
#11
Elisa Bellei, Emanuela Monari, Serkan Ozben, Mesrure Koseoglu Bitnel, Selma Topaloglu Tuac, Aldo Tomasi, Stefania Bergamini
OBJECTIVES: Restless legs syndrome (RLS) can lead to severe clinical consequences, thus negatively impacts on patients' overall health and quality of life. Nevertheless, the pathophysiology of RLS is still unclear, resulting in underestimate, incorrect, or ignored diagnosis and in limited management and treatment. The aim of this study was to compare the plasma proteome of RLS patients and healthy controls, in the search of diagnostic biomarkers related to the disease severity. MATERIALS AND METHODS: Two-dimensional gel electrophoresis coupled with liquid chromatography-mass spectrometry was employed to analyze plasma samples of 34 patients with primary RLS, divided into two subgroups according to the disease severity: MMS group (mild-moderate symptoms) and HS group (severe and very severe symptoms), and 17 age- and sex-matched control subjects...
October 2018: Brain and Behavior
https://www.readbyqxmd.com/read/30243003/study-of-antichromatin-antibodies-as-a-marker-of-lupus-activity-and-lupus-nephritis
#12
Fatma M Elsenosy, Sabila G Mousa, Nagwa A Mohamed, Rehab H Mohamed
Systemic Lupus Erythematosus (SLE) is a chronic and potentially fatal autoimmune disorder characterized by the production of auto-antibodies that cause widespread tissue damage. Validate Antichromatin antibodies as a biomarker of renal involvement in SLE and how their titers correlate with systemic lupus activity measure (SLAM) index among a sample of Egyptian systemic lupus patients. The study was conducted on 60 patients diagnosed according to ACR criteria for diagnoses of SLE (Group I) and 25 age matched healthy controls (Group II)...
January 2018: Egyptian Journal of Immunology
https://www.readbyqxmd.com/read/30226207/a-case-of-graves-disease-associated-with-membranoproliferative-glomerulonephritis-and-leukocytoclastic-vasculitis
#13
Werner Keenswijk, Eva Degraeuwe, Anne Hoorens, Jo Van Dorpe, Johan Vande Walle
Background The association of hyperthyroidism with renal disease is very rare and the importance of timely clinical recognition cannot be overemphasized. Case presentation An 11-year-old girl presented with gastrointestinal symptoms while hypertension, edema and abdominal pain were noticed on clinical examination. Laboratory investigation revealed: hemoglobin 9.4 (11.5-15.5) g/dL, total white cell count 16 (4.5-12)×109/L, platelets 247 (150-450)×109/L, C-reactive protein (CRP) 31.8 (<5) mg/L, blood urea nitrogen (BUN) 126 (13-43) mg/dL, creatinine 0...
October 25, 2018: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/30224373/activation-of-b-1-cells-promotes-tumor-cell-killing-in-the-peritoneal-cavity
#14
Marcela A Haro, Allison M Dyevoich, James P Phipps, Karen M Haas
Metastatic cancer involving spread to the peritoneal cavity is referred to as peritoneal carcinomatosis and has a very poor prognosis. Activating the anti-tumor immune response in the characteristically immune-suppressive peritoneal environment presents a potential strategy to treat this disease. In this study, we show that a toll-like receptor (TLR) and C-type lectin receptor (CLR) agonist pairing of monophosphoryl lipid A (MPL) and trehalose-6,6'-dicorynomycolate (TDCM) effectively inhibits tumor growth and ascites development in a mouse model of aggressive mammary cancer-induced peritoneal carcinomatosis...
September 17, 2018: Cancer Research
https://www.readbyqxmd.com/read/30210953/drug-induced-angioedema-a-rare-side-effect-of-rosuvastatin
#15
Amir Shahbaz, Rupak Mahendhar, Mina Fransawy Alkomos, Paria Zarghamravanbakhsh, Issac Sachmechi
Hydroxymethyl glutaryl coenzyme A reductase inhibitors (statins) are first-line medication for lowering serum cholesterol levels in the prevention of cardiovascular disease. Angioedema is the swelling of mucosa and submucosal tissue. There are no published cases of drug-induced angioedema involving rosuvastatin. We report a case of a 45-year-old female who presented with episodes of self-resolving edema of face, lips, and tongue after being on rosuvastatin. The patient denied any rash during these episodes and mentioned that self-medication with diphenhydramine did not relieve her symptoms...
July 11, 2018: Curēus
https://www.readbyqxmd.com/read/30186190/increased-serum-c3-and-decreased-ua-in-patients-of-bipolar-disorder-in-chinese-han-population
#16
Xiudeng Yang, Huai Tao, Ledong Xiao, Cunyan Li, Yamei Tang, Yong Liu
The aim of this study is to explore the changes and clinical significance of serum C3, C4, hypersensitive C-reactive protein (hsCRP) and uric acid (UA) in patients of bipolar disorder (BD). In this case-control study, we recruited 141 BD patients from The Second Xiangya Hospital, Central South University, and 151 age and gender matched healthy controls (HC) from the health management central of The Second Xiangya Hospital. These patients were divided into two subgroups based on medicines use: 91 patients were treated with psychiatric drugs and 50 patients were drugs free, or four subgroups based on mood states: 54 patients in manic/hypomanic phase, 30 patients in depressive phase, 52 patients in euthymic phase and 5 patients in mixed phase...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/30185720/dsh5-a-dihydrosphingosine-c4-hydroxylase-gene-family-member-shows-spatially-restricted-expression-in-rice-and-is-lethal-when-expressed-ectopically
#17
Tomohiro Imamura, Chihiro Obata, Kazuyoshi Yoneyama, Masatoshi Ichikawa, Akane Ikura, Hiromi Mutsuro-Aoki, Toshiki Ishikawa, Maki Kawai-Yamada, Tadamasa Sasaki, Hiroaki Kusano, Hiroaki Shimada
Dihydrosphingosine C4 hydroxylase (DSH), a diiron-binding membrane enzyme, catalyzes the hydration of dihydrosphingosine and acyl-sphinganine to produce phytosphingosine and phytoceramide, respectively. Rice has two types of DSH homologs: general DSHs, namely DSH1, DSH2 and DSH4, and others that show spatial expression profiles, namely DSH3 and DSH5. The general DSHs exist in many plant species. These DSHs showed similarity in their functions and complemented the yeast sur2D mutation. In contrast, homologs of DSH3 and DSH5 were found only in monocot plants...
September 4, 2018: Genes & Genetic Systems
https://www.readbyqxmd.com/read/30185417/galectin-9-is-an-easy-to-measure-biomarker-for-the-interferon-signature-in-systemic-lupus-erythematosus-and-antiphospholipid-syndrome
#18
Lucas L van den Hoogen, Joël A G van Roon, Jorre S Mertens, Judith Wienke, Ana Pinheiro Lopes, Wilco de Jager, Marzia Rossato, Aridaman Pandit, Catharina G K Wichers, Femke van Wijk, Ruth D E Fritsch-Stork, Timothy R D J Radstake
OBJECTIVE: The interferon (IFN) signature is related to disease activity and vascular disease in systemic lupus erythematosus (SLE) and antiphospholipid syndrome (APS) and represents a promising therapeutic target. Quantification of the IFN signature is currently performed by gene expression analysis, limiting its current applicability in clinical practice. Therefore, the objective of this study was to establish an easy to measure biomarker for the IFN signature. METHODS: Serum levels of galectin-9, CXCL-10 (IP-10) and tumour necrosis factor receptor type II (TNF-RII) were measured in patients with SLE, SLE+APS and primary APS (PAPS) and healthy controls (n=148) after an initial screening of serum analytes in a smaller cohort (n=43)...
September 5, 2018: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/30180450/-the-clinical-significance-of-cd-4-cd-69-t-lymphocytes-in-patients-with-autoimmune-hemolytic-anemia-evans-syndrome
#19
L M Xing, W Y Xu, N N Duan, Y Y Qu, Z Y Liu, Z H Shao
Objective: To investigate the significant of peripheral CD(4)(+) CD(69)(+) T lymphocytes in patients with autoimmune hemolytic anemia (AIHA)/Evans syndrome (ES). Methods: In this study peripheral blood samples from 32 patients with AIHA/ES (15 hemolytic episode patients, 17 remission patients) and 13 healthy controls were collected. Patients with AIHA/ES were recruited in Tianjin Medical University General Hospital from October 2015 to May 2016. The percentages of CD(69)(+) T lymphocytes were analyzed by flow cytometry...
September 1, 2018: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/30177469/complement-depletion-and-coombs-positivity-in-pneumococcal-hemolytic-uremic-syndrome-pnhus-case-series-and-plea-to-revisit-an-old-pathogenetic-concept
#20
Martin Bitzan, Omar AlKandari, Blair Whittemore, Xiao-Ling Yin
Hemolytic uremic syndrome is a rare complication of invasive pneumococcal infection (pnHUS). Its pathogenesis is poorly understood, and treatment remains controversial. The emerging role of complement in various forms of HUS warrants a new look at this "old" disease. We performed a retrospective analysis of clinical and laboratory features of three sequential cases of pnHUS since 2008 associated with pneumonia/pleural empyema, two due to Streptococcus pneumoniae serotype 19 A. Profound depletion of complement C3 (and less of C4) was observed in two patients...
August 29, 2018: International Journal of Medical Microbiology: IJMM
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