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anti rnp

Shintaro Watanuki, Taku Kikuchi, Takaaki Toyama, Ryohei Abe, Hitomi Nakayama, Daiki Karigane, Takayuki Shimizu, Jun Kikuchi, Kotaro Matsumoto, Hidetaka Yasuoka, Masaharu Kataoka, Shinichiro Okamoto, Takehiko Mori
A 37-year-old woman was diagnosed with chronic phase chronic myeloid leukemia. Nilotinib treatment was initiated; however, it had to be discontinued due to an allergic reaction one month later, and dasatinib treatment was provided. Although favorable response was obtained, she started complaining of shortness of breath 7 months after initiating dasatinib treatment. Chest X-ray and echocardiography indicated pulmonary congestion and hypertension. Further, she was diagnosed with mixed connective tissue disease (MCTD) based on Raynaud phenomenon, swollen fingers, sclerodactyly, pancytopenia, hypocomplementemia, and positive anti-U1-RNP antibody...
2018: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
Rita de Sousa Gameiro, Ana Isabel Alves Reis, Ana Cristina Grilo, Carla Noronha
Mixed connective tissue disease (MCDT) is a rare condition characterised by the presence of high titres of anti-U1 ribonucleoprotein antibodies and selected clinical features of systemic lupus erythematosus, systemic sclerosis and polymyositis/dermatomyositis. Early symptoms are non-specific, including easy fatigability, myalgia, arthralgia and Raynaud's phenomenon. Some reports emphasised the favourable outcome and excellent response to glucocorticoids, but there are contradictory studies reporting worse prognosis...
March 5, 2018: BMJ Case Reports
Ashraf Abugroun, Osama Hallak, Fatima Ahmed, Safwan Gaznabi
Mixed connective tissue disease (MCTD) is a distinct entity of connective tissue disorders characterized by overlapping clinical features of various autoimmune diseases along with the presence of antibodies to ribonucleoprotein (anti-RNP). The prevalence of cardiac involvement in MCTD varies from 13% to 65% and accounts for approximately 20% of MCTD related mortality. In this case, we describe an elderly female patient with multiple complaints without a clear etiology on presentation. Echocardiogram revealed severe rapidly accumulating pericardial effusion causing tamponade necessitating pericardial window...
February 2018: Cardiology Research
Jasmine Rana, Andrea Primiani Moy, Adriano Piris, Gideon P Smith
A 28-year-old man with clinically and laboratory diagnosed anti-PL-12 anti-synthetase syndrome (AS) in 2009 developed cutaneous lupus lesions, discoid lupus lesions, and sclerodacytly with finger-tip ulcerations four years following his AS diagnosis. Laboratory tests including +ANA, +anti-dsDNA antibody, +anti-Smith antibody, and +anti-RNP antibody in 2014 confirmed the diagnosis of progression to an overlap syndrome including systemic lupus erythematosus. The patient now also has clinical findings (sclerodacytly, Raynaud phenomenon, finger-tip ulcerations) consistent with scleroderma overlap...
September 15, 2017: Dermatology Online Journal
A Fedrigo, T A F G Dos Santos, R Nisihara, T Skare
Background Patients with systemic lupus erythematosus (SLE) may form clusters with clinical manifestations and autoantibodies. Objective The objective of this report is to study whether SLE patients with positive rheumatoid factor (RF) have a special clinical and/or serological profile. Methods A retrospective study of 467 SLE patients seen at a single rheumatology unit was conducted. Epidemiological data (age, gender, age at disease onset, ethnic background and tobacco use), clinical data (malar rash, photosensitivity, oral ulcers, discoid lesions, serositis, glomerulonephritis, convulsions, psychosis, hemolytic anemia, leukopenia, lymphocytopenia, arthritis and hypothyroidism) and serological profile (anti-dsDNA, anti-Ro/SS-A, anti-La/SS-B, anti-RNP, anti-Sm, IgG aCL, IgM aCL, lupus anticoagulant, direct Coombs and RF) were collected...
January 1, 2018: Lupus
Eui Hyun Oh, Eun Jin Kim, Young Suck Ro, Joo Yeon Ko
An understanding of the differences in clinical manifestations and laboratory abnormalities between subtypes of cutaneous lupus erythematosus (CLE) is still lacking. The purpose of this study was to analyze demographic, clinical and histological features of CLE according to three main presentation subsets: acute (ACLE), subacute (SCLE) and chronic (CCLE). A 10-year retrospective analysis was performed on data from patients who were diagnosed with CLE between March 2005 and September 2015 in a Korean tertiary referral dermatology clinic...
February 9, 2018: Journal of Dermatology
Chun-Yeung Lo, Olive Tin-Wai Li, Wen-Ping Tang, Chun Hu, Guo Xin Wang, Jacky Chi-Ki Ngo, David Chi-Cheong Wan, Leo Lit-Man Poon, Pang-Chui Shaw
Currently, many strains of influenza A virus have developed resistance against anti-influenza drugs, and it is essential to find new chemicals to combat this virus. The influenza polymerase with three proteins, PA, PB1 and PB2, is a crucial component of the viral ribonucleoprotein (RNP) complex. Here, we report the identification of a hit compound 221 by surface plasmon resonance (SPR) direct binding screening on the C-terminal of PA (PAC). Compound 221 can subdue influenza RNP activities and attenuate influenza virus replication...
February 2, 2018: Scientific Reports
Lunhua Liu, Windy Rose Allman, Adam Steven Coleman, Kazuyo Takeda, Tsai-Lien Lin, Mustafa Akkoyunlu
Anti-B cell activating factor belonging to TNF-family (BAFF) antibody therapy is indicated for the treatment of patients with active systemic lupus erythematosus (SLE). We hypothesized that the BAFF receptor, transmembrane activator and calcium-modulator and cyclophilin interactor (TACI) may be responsible for the generation of antibody secreting plasma cells in SLE. To test this hypothesis, we generated TACI deficient MRL-Fas/Lpr (LPR-TACI-/-) mouse. TACI deficiency resulted in improved survival of MRL-Fas/Lpr mice and delayed production of anti-dsDNA and anti-SAM/RNP antibodies...
January 22, 2018: Scientific Reports
Hamid Nawaz Tipu, Muhammad Mukarram Bashir
OBJECTIVE: To determine probability of finding antinuclear antibodies (ANA) and anti extractable nuclear antigens (ENA) positive samples and associating ANA patterns with anti-ENA reactivities among a consecutive cohort of samples of systemic rheumatic disease patients referred for ANA testing. STUDY DESIGN: Prospective cohort study. PLACE AND DURATION OF STUDY: Immunology Department, Armed Forces Institute of Pathology, Rawalpindi, Pakistan, from January to June 2016...
January 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
Alexandru Vlagea, Dora Pascual-Salcedo, Rita Álvarez Doforno, Paz Lavilla, Jesús Diez, Beatriz Padilla Merlano, María V Cuesta, Antonio Gil
OBJECTIVE: IgG and IgM antibodies directed at β2-glycoprotein I are included in the classification criteria for the antiphospholipid syndrome (APS) while the IgA antibodies against β2-glycoprotein I (IgA aβ2GPI) are not. Conflicting data about the significance of IgA aβ2GPI and APS manifestation can be found and more studies are necessary in order to define the diagnostic value of IgA aβ2GPI. In the present article, we investigated the possible role of IgA aβ2GPI as marker of APS...
February 2018: Thrombosis Research
Evan S Vista, Michael H Weisman, Mariko L Ishimori, Hua Chen, Rebecka L Bourn, Ben F Bruner, Laniyati Hamijoyo, Robelle D Tanangunan, Noga J Gal, Julie M Robertson, John B Harley, Joel M Guthridge, Sandra V Navarra, Judith A James
Objectives: Epstein-Barr virus (EBV) is considered an important environmental factor in SLE aetiology, but the relationship between SLE and EBV in the Filipino population is unknown. We tested associations between SLE, lupus-associated autoantibodies and seropositivity for EBV and other herpes viruses in the Filipino population. Methods: Sera from Filipino patients with SLE (n=233), unaffected first-degree relatives (FDRs, n=543) and unrelated controls (n=221) were tested for antibodies against EBV, cytomegalovirus (CMV) and herpes simplex viruses (HSV-1 and HSV-2) by standardised ELISAs...
2017: Lupus Science & Medicine
Ana Raquel Teixeira, Mariana Rodrigues, Hercília Guimarães, Cláudia Moura, Iva Brito
Neonatal lupus (NL) is a very rare condition with an estimated incidence of 1 in 20.000 pregnancies. It is caused by the transplacental passage of autoantibodies anti-Ro/SSA, antiSa/SSB antibodies and/or anti-U1 RNP antibodies into the fetal circulation. The mother may be completely asymptomatic or have a known inflammatory rheumatic disease, such as Sjögren syndrome (SS) or Systemic Lupus Erythematosus (SLE). Clinical manifestations are diverse, being the most common cutaneous and cardiac. The authors present a case series of eight cases diagnosed with NL between January 2008 and December 2016 in a tertiary hospital and a brief revision of the literature...
October 2017: Acta Reumatológica Portuguesa
Shuhei Sakakibara, Takao Arimori, Kazuo Yamashita, Hideyuki Jinzai, Daisuke Motooka, Shota Nakamura, Songling Li, Kazuya Takeda, Jun Katayama, Marwa Ali El Hussien, Masashi Narazaki, Toshio Tanaka, Daron M Standley, Junichi Takagi, Hitoshi Kikutani
The evolutional process of disease-associated autoantibodies in systemic lupus erythematosus (SLE) remains to be established. Here we show intraclonal diversification and affinity maturation of anti-nuclear antibody (ANA)-producing B cells in SLE. We identified a panel of monoclonal ANAs recognizing nuclear antigens, such as double-stranded DNA (dsDNA) and ribonucleoproteins (RNPs) from acute SLE subjects. These ANAs had relatively few, but nonetheless critical mutations. High-throughput immunoglobulin sequencing of blood lymphocytes disclosed the existence of sizable ANA lineages shearing critical mutations intraclonally...
November 27, 2017: Scientific Reports
Tyrone C Otgaar, Eloise Ferreira, Sibusiso Malindisa, Martin Bernert, Boitelo T Letsolo, Stefan F T Weiss
One of the core regulators of cellular aging are telomeres, repetitive DNA sequences at the ends of chromosomes that are maintained by the ribonucleoprotein DNA polymerase complex, telomerase. Recently, we demonstrated that knockdown of the 37kDa/ 67kDa laminin receptor (LRP/LR), a protein that promotes cell viability in tumorigenic and normal cells, reduces telomerase activity. We therefore hypothesized that upregulating LRP/LR might increase telomerase activity and impede aging. Here we show that overexpression of LRP::FLAG resulted in significantly elevated hTERT levels, telomerase activity and telomere length, respectively, with concomitantly reduced levels of senescence markers...
October 17, 2017: Oncotarget
Wenda Guan, Jing Li, Qiaolian Chen, Zhihong Jiang, Rongping Zhang, Xinhua Wang, Zifeng Yang, Xiping Pan
Laggera pterodonta (DC.) Benth. is a traditional Chinese medicine. The previous study revealed that the crude extracts of this herb could inhibit influenza virus infection, but its anti-influenza components and underlying mechanism of action remain unknown. Column chromatography was performed to isolate components from the plant. Activity against influenza virus of the compound was determined by CPE inhibition assay. Neuraminidase (NA) inhibition was measured by chemiluminescence assay. The anti-virus and anti-inflammation effects were determined using dual-luciferase reporter assay, immunofluorescence, quantitative real-time PCR and luminex assay...
October 16, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Sin-Guang Chen, Yann-Lii Leu, Mei-Ling Cheng, Siew Chin Ting, Ching-Chuan Liu, Shulhn-Der Wang, Cheng-Hung Yang, Cheng-Yu Hung, Hiroaki Sakurai, Kuan-Hsing Chen, Hung-Yao Ho
Enterovirus 71 (EV71) infection is endemic in the Asia-Pacific region. No specific antiviral drug has been available to treat EV71 infection. Melissa officinalis (MO) is a medicinal plant with long history of usage in the European and Middle East. We investigated whether an aqueous solution of concentrated methanolic extract (MOM) possesses antiviral activity. MOM inhibited plaque formation, cytopathic effect, and viral protein synthesis in EV71-infected cells. Using spectral techniques, we identified rosmarinic acid (RA) as a biologically active constituent of MOM...
September 25, 2017: Scientific Reports
Hrudya Abraham, Jose Kuzhively, Syed W Rizvi
BACKGROUND Chronic inflammatory demyelinating polyneuropathy (CIDP) is an uncommon manifestation of systemic lupus erythematosus (SLE). We report a case of SLE presenting as CIDP and discuss the diagnosis, management, and prognosis of CIDP. CASE REPORT A 40-year-old woman with a past medical history of SLE treated with hydroxychloroquine presented with bilateral, progressive, ascending, sensory and motor neuropathy. Physical examination showed weakness and reduced temperature of all extremities, reduced pinprick and vibration sense of the distal extremities, loss of reflexes, and walking with a wide-based unsteady gait...
September 12, 2017: American Journal of Case Reports
Allison L Didychuk, Eric J Montemayor, Tucker J Carrocci, Andrew T DeLaitsch, Stefani E Lucarelli, William M Westler, David A Brow, Aaron A Hoskins, Samuel E Butcher
U6 small nuclear ribonucleoprotein (snRNP) biogenesis is essential for spliceosome assembly, but not well understood. Here, we report structures of the U6 RNA processing enzyme Usb1 from yeast and a substrate analog bound complex from humans. Unlike the human ortholog, we show that yeast Usb1 has cyclic phosphodiesterase activity that leaves a terminal 3' phosphate which prevents overprocessing. Usb1 processing of U6 RNA dramatically alters its affinity for cognate RNA-binding proteins. We reconstitute the post-transcriptional assembly of yeast U6 snRNP in vitro, which occurs through a complex series of handoffs involving 10 proteins (Lhp1, Prp24, Usb1 and Lsm2-8) and anti-cooperative interactions between Prp24 and Lhp1...
September 8, 2017: Nature Communications
Julia Martínez-Barrio, Lara Valor, F Javier López-Longo
Mixed connective tissue disease (MCTD) is a systemic autoimmune rheumatic disease (SARD) characterised by the combination of clinical manifestations of systemic lupus erythematosus (SLE), cutaneous systemic sclerosis (SSc) and polymyositis-dermatomyositis, in the presence of elevated titers of anti-U1-RNP antibodies. Main symptoms of the disease are polyarthritis, hand oedema, Raynaud's phenomenon, sclerodactyly, myositis and oesophageal hypomobility. Although widely discussed, most authors today accept MCTD as an independent entity...
August 29, 2017: Medicina Clínica
Eric Hachulla, Xavier Jais, Gaël Cinquetti, Pierre Clerson, Laurence Rottat, David Launay, Vincent Cottin, Gilbert Habib, Grégoire Prevot, Céline Chabanne, Eléna Foïs, Zahir Amoura, Luc Mouthon, Véronique Le Guern, David Montani, Gérald Simonneau, Marc Humbert, Vincent Sobanski, Olivier Sitbon
BACKGROUND: Pulmonary arterial hypertension (PAH) is a rare complication of systemic lupus erythematosus (SLE). METHODS: We identified all patients with SLE and PAH (SLE-PAH) who were enrolled in the French Pulmonary Hypertension Registry with a diagnosis confirmed by right heart catheterization (RHC). A control group of 101 patients with SLE without known PAH was selected from SLE expert centers participating in the Pulmonary Hypertension Registry. Survival was estimated by the Kaplan-Meier method...
August 26, 2017: Chest
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