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Parvovirus b19

Gorana G Stamenković, Valentina S Ćirković, Marina M Šiljić, Jelena V Blagojević, Aleksandra M Knežević, Ivana D Joksić, Maja P Stanojević
The aim of this study was to estimate substitution rate and imprints of natural selection on parvovirus B19 genotype 1. Studied datasets included 137 near complete coding B19 genomes (positions 665 to 4851) for phylogenetic and substitution rate analysis and 146 and 214 partial genomes for selection analyses in open reading frames ORF1 and ORF2, respectively, collected 1973-2012 and including 9 newly sequenced isolates from Serbia. Phylogenetic clustering assigned majority of studied isolates to G1A. Nucleotide substitution rate for total coding DNA was 1...
October 24, 2016: Scientific Reports
Raymund R Razonable
Kidney transplant recipients are at increased risk of developing clinical disease due to uncommon opportunistic viral pathogens. Refractory anemia is classically associated with parvovirus B19 infection. West Nile virus has the propensity to cause fever and neurologic symptoms, while spastic paresis and lymphoma can be triggered by human T cell lymphotrophic virus. In this review article, the epidemiology, clinical manifestations, diagnosis and treatment of less common viruses are discussed in the setting of kidney transplantation...
September 2016: Seminars in Nephrology
U Sixdorf, E Märker-Hermann
Viral arthritis and vasculitis are important differential diagnoses primarily in patients with acute polyarticular arthritis in association with fever and rash, in populations specially at risk and in returning travellers. Parvovirus B19 is the most frequent cause of viral arthritis in Europe, whereas rubella, hepatitis B and C viruses have become less common. Due to worldwide tourism arthritogenic alphaviruses, which are transmitted by mosquito vectors have come into the focus of tropical medicine and rheumatology...
October 19, 2016: Zeitschrift Für Rheumatologie
Bor-Show Tzang, Szu-Yi Chiang, Hsu-Chin Chan, Chung-Hsien Liu, Tsai-Ching Hsu
Human parvovirus B19 (B19) is harmful during pregnancy since it can be vertically transmitted to the developing fetus. In addition, the anti‑B19 antibodies induced by B19 infection are believed to have a cytopathic role in B19 transmission; however, knowledge regarding the effects of anti‑B19 antibodies during pregnancy is limited. To investigate the possible roles of anti‑B19 antibodies during pregnancy, the present study examined the effects of anti‑B19‑VP1 unique region (VP1u), anti‑B19‑VP2 and anti‑B19‑nonstructural protein 1 (NS1) immunoglobulin G (IgG) antibodies on BeWo trophoblasts...
September 26, 2016: Molecular Medicine Reports
Job Verdonschot, Mark Hazebroek, Jort Merken, Yannick Debing, Robert Dennert, Hans-Peter Brunner-La Rocca, Stephane Heymans
Over the last decade, parvovirus B19 (B19V) has frequently been linked to the pathogenesis of myocarditis (MC) and its progression towards dilated cardiomyopathy (DCM). The exact role of the presence of B19V and its load remains controversial, as this virus is also found in the heart of healthy subjects. Moreover, the prognostic relevance of B19V prevalence in endomyocardial biopsies still remains unclear. As a result, it is unclear whether the presence of B19V should be treated. This review provides an overview of recent literature investigating the presence of B19V and its pathophysiological relevance in MC and DCM, as well as in normal hearts...
October 17, 2016: European Journal of Heart Failure
P Ganesh, Subbalaxmi Mvs, Swaroopa Reddy, Ysn Raju
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
Remo Leisi, Marcus Von Nordheim, Carlos Ros, Christoph Kempf
Parvovirus B19 (B19V) is a small non-enveloped virus and known as the causative agent for the mild childhood disease erythema infectiosum. B19V has an extraordinary narrow tissue tropism, showing only productive infection in erythroid precursor cells in the bone marrow. We recently found that the viral protein 1 unique region (VP1u) contains an N-terminal receptor-binding domain (RBD), which mediates the uptake of the virus into cells of the erythroid lineage. To further investigate the role of the RBD in connection with a B19V-unrelated capsid, we chemically coupled the VP1u of B19V to the bacteriophage MS2 capsid and tested the internalization capacity of the bioconjugate on permissive cells...
2016: Viruses
M W A Molenaar-de Backer, A Russcher, A C M Kroes, M H G M Koppelman, M Lanfermeijer, H L Zaaijer
BACKGROUND: Parvovirus B19 (B19V) DNA can be detected in blood over a long period after acute infection. Several reports associate the presence of B19V DNA with disease, irrespective of timing of the initial B19V infection. OBJECTIVES: This study aims to analyze the properties of B19V DNA in blood, differentiating between bare, non-infectious strands of DNA and B19V DNA in viable virions. STUDY DESIGN: Ten blood donors with asymptomatic acute B19V infection were followed and sampled up to 22 months after infection...
September 13, 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
Rosangela Invernizzi, Raffaella Bastia, Federica Quaglia
A case of parvovirus B19-induced pure red cell aplasia occurring in a heart transplant recipient is reported. The diagnosis of this rare but clinically important complication can be suspected on the basis of the pathognomonic morphological features of the bone marrow.
September 2016: Clinical Case Reports
E de Jong-Pleij, D Oepkes, L S Ribbert
No abstract text is available yet for this article.
September 2016: Ultrasound in Obstetrics & Gynecology
Whitney A McCarthy, Edwina J Popek
Fetal anemia and hydrops may be caused by parvovirus B19 infection and maternal alloimmunization to RhD with subsequent hemolytic disease of the fetus and newborn. The use of intrauterine transfusion over the last few decades has dramatically improved outcomes. Prior literature has extensively documented placental changes associated with untreated parvovirus infection and RhD HDFN in intrauterine fetal demises (IUFD) and pre-term births; however, histopathologic changes in term placentas from term infants treated with IUT have not been reported...
September 19, 2016: Pediatric and Developmental Pathology
Junting Jia, Yuyuan Ma, Xiong Zhao, Chaoji Huangfu, Yadi Zhong, Chi Fang, Rui Fan, Maomin Lv, Jingang Zhang
BACKGROUND: Human parvovirus B19 (B19V) is a frequent contaminant of blood and plasma-derived medicinal products. Three distinct genotypes of B19V have been identified. The distribution of the three B19V genotypes has been investigated in various regions or countries. However, in China, data on the existence of different B19V genotypes are limited. METHODS: One hundred and eighteen B19V-DNA positive source plasma pool samples collected from three Chinese blood products manufacturers were analyzed...
2016: Virology Journal
Maurizio Zavattoni, Stefano Paolucci, Antonella Sarasini, Beatrice Tassis, Mariangela Rustico, Aida Quarenghi, Antonio Piralla, Fausto Baldanti
To define diagnostic and prognostic markers of parvovirus B19 (B19V) fetal infection, two groups were investigated: 1) pregnant women with specific symptoms or contacts with symptomatic households (n=37); 2) mothers with pathological ultrasound findings and the relevant fetus at the time of prenatal diagnosis (n=16). In the first group, diagnosis of B19V infection was achieved using IgM detection in 29/37 (78.3%) of patients, while B19V DNA was detected in 36/37 (97.3%) of infected women. In the second group, intrauterine infection was investigated by amniocentesis (n=5), cordocentesis (n=3) or both (n=5)...
September 2016: New Microbiologica
Whitney Besse, Sherry Mansour, Karan Jatwani, Cynthia C Nast, Ursula C Brewster
BACKGROUND: Collapsing Glomerulopathy (CG), also known as the collapsing variant of Focal Segmental Glomerulosclerosis (FSGS), is distinct in both its clinical severity and its pathophysiologic characteristics from other forms of FSGS. This lesion occurs disproportionally in patients carrying two APOL1 risk alleles, and is the classic histologic lesion resulting from Human Immunodeficiency Virus (HIV) infection of podocytes. Other viral infections, including parvovirus B19, and drugs such as interferon that perturb the immune system, have also been associated with CG...
2016: BMC Nephrology
G Bogdanovic, C Pou, M Barrientos-Somarribas, A Bjerkner, E Honkaniemi, T Allander, B Andersson, B Gustafsson
BACKGROUND: Some childhood acute lymphoblastic leukaemias (ALL) can be traced back to a prenatal origin, where a virus infection could be involved in the first pre-leukaemic clone development. The DNA virome of 95 children who later developed ALL was characterised from neonatal blood spots (NBS) using unbiased next-generation sequencing (NGS) and compared with the virome of 95 non-ALL controls. METHODS: DNA was individually extracted from the ALL-patients and controls, pooled, randomly amplified and sequenced using the Illumina MiSeq Sequencing System...
October 11, 2016: British Journal of Cancer
Ayaka Kawabe, Yasushi Takai, Jun-Ichi Tamaru, Kouki Samejima, Hiroyuki Seki
BACKGROUND: There is concern about the development of anemia-associated fetal hydrops associated with maternal parvovirus B19 infection. Parvovirus B19 infection occurs via the globoside (P antigen) receptor, the main glycolipid of erythroid cells, which induces apoptosis. Similar findings have been reported for the P antigen of globoside-containing placental trophoblast cells. CASE DESCRIPTION: A 32-year-old woman was infected with human parvovirus B19 at week 32 of pregnancy, and had severe anemia at week 34...
2016: SpringerPlus
Caterina Foti, Paolo Romita, Giovanni Zanframundo, Mariagrazia Ragusa, Mario Mastrolonardo, Domenico Bonamonte, Fabrizio Guarneri
No abstract text is available yet for this article.
August 19, 2016: European Journal of Dermatology: EJD
C Giraud, Z Tatar, M Soubrier
Leukopenia is a considerably common complication of tocilizumab [TCZ] and rituximab [RTX] therapy. RTX-induced leukopenia typically exhibits delayed onset. While agranulocytosis has been reported linked to RTX treatment of lymphoma, this complication rarely occurs in rheumatoid arthritis (RA) treatment and, to our knowledge, has never been reported in association with TCZ therapy. We herein report four agranulocytosis cases in three patients, with the first two cases suspected to be secondary to human parvovirus B19 (PVB19) infection...
October 2016: Clinical Rheumatology
Areli Del Carmen Morán-García, Evelyn Rivera-Toledo, Olga Echeverría, Gerardo Vázquez-Nin, Beatriz Gómez, Ismael Bustos-Jaimes
Virus-like particles (VLPs) have demonstrated to be valuable scaffolds for the display of heterologous peptides for vaccine development and other specific interactions. VLPs of primate erythroparvovirus 1, generally referred as parvovirus B19 (B19V), have already been produced in-vivo and in-vitro from the recombinant VP2 protein of this virus. In this study, chimeric forms of B19V VP2 were constructed, and their ability to assemble into VLPs was evaluated. Chimeras were composed of the VP2 protein fused, at its N-terminus, with two peptides derived from the fusion glycoprotein (F) of the respiratory syncytial virus (RSV)...
September 15, 2016: Virus Research
S Voleva, St Ivanova, B Marinov, P Genova-Kalou, V Manolov, V Vasilev
UNLABELLED: Viral infections during pregnancy, along with some form of accompanying pregnancy diseases such as diabetes, cardiovascular, gastrointestinal, kidney and others, are a major cause of arising complications and mortality of mother and fetus. AIM: To improved the laboratory diagnostic approach in the study of women with pathological pregnancy, including improve treatment and prognostic character of the outcome of pregnancy, with the inclusion of two infectious agent parvovirus B19 and Chlamydia trachomatis...
2016: Akusherstvo i Ginekologii︠a︡
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