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https://www.readbyqxmd.com/read/29155634/how-does-imaging-of-congenital-zika-compare-with-imaging-of-other-torch-infections
#1
Deborah Levine, Jacques C Jani, Ilse Castro-Aragon, Mieke Cannie
The acronym TORCH is used to refer to congenital infections, such as toxoplasmosis, other infections (such as syphillis, varicella-zoster, and parvovirus B19), cytomegalovirus, and herpes simplex virus. The classic findings in patients with TORCH infections include rash in the mother during pregnancy and ocular findings in the newborn. Zika virus has emerged as an important worldwide congenital infection. It fits well with other congenital TORCH infections since there is a rash in the mother and there are commonly ocular abnormalities in the newborn...
December 2017: Radiology
https://www.readbyqxmd.com/read/29113531/detection-of-cytomegalovirus-herpes-virus-simplex-and-parvovirus-b19-in-spontaneous-abortion-placentas
#2
Gabriela Mafra de Oliveira, Marcelo Antônio Pascoal-Xavier, Daniel R Moreira, Vitor Souza Guimarães, Regina Amélia Lopes Pessoa de Aguiar, Débora Marques de Miranda, Roberta Maia de Castro Romanelli
OBJECTIVE: This study aims to investigate the presence of Cytomegalovirus (CMV), herpes virus simplex (HSV), and parvovirus B19 (PVB19) in the placental tissue of patients who underwent abortions without an otherwise-defined aetiology. STUDY DESIGN: This cross-sectional study was conducted in a high-risk obstetric maternity facility at a University Hospital in Belo Horizonte, Brazil, from January 2013 to December 2015. We included placenta samples obtained from spontaneous abortions of unknown aetiology...
November 7, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29096233/parvovirus-b19-infection-in-pregnancy-awareness-and-opportunities
#3
REVIEW
Francesca Bonvicini, Gloria Bua, Giorgio Gallinella
Parvovirus B19 (B19V) is a human pathogenic virus associated with a wide range of clinical conditions. In pregnancy, B19V poses a potential hazard to the fetus as crossing the placental barrier and infecting erythroid progenitor cells in bone marrow and liver, it blocks fetal erythropoiesis leading to profound anemia, hydrops and/or fetal death. The virus is not regarded as a teratogen, however more scientific awareness is emerging on mechanisms and consequences of intrauterine infection and possible sequelae in the neonatal development...
October 26, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/29095139/parvovirus-b19-in-hiv-adult-patients-with-different-cd4-lymphocyte-counts
#4
Mauro Sebastian Pedranti, Gonzalo Rodriguez-Lombardi, Romina Bracciaforte, Natalia Romano, Pablo Lujan, Brenda Ricchi, Jorge Mautino, Maria Pilar Adamo
PURPOSE: Human parvovirus B19 (B19V) can cause anemia in immunocompromised patients. We aimed to investigate the presence of B19V in HIV+ adults with different CD4+ T cell counts, to recognise the frequency of B19V in these different conditions and its possible association with anemia. METHODOLOGY: We studied B19V specific IgM, IgG and DNA in 98 HIV+ patients and in 52 healthy individuals. HIV load, CD4+ counts and haemoglobin level were also determined in the patients...
November 2, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29093386/the-impact-of-human-parvovirus-b19-infection-on-heart-failure-and-anemia-with-reference-to-iron-metabolism-markers-in-an-adult-woman
#5
Yuya Nakamura, Isao Ohsawa, Yoshikazu Goto, Hokuto Namba, Yusuke Dodo, Mayumi Tsuji, Yuji Kiuchi, Masahiro Inagaki, Hiromichi Gotoh
A 35-year-old woman with fever, edema and rash was admitted. Pleural effusion and cardiomegaly were observed. A laboratory analysis revealed anemia with iron deficiency and elevated human parvovirus B19 (B19V) immunoglobulin M. The patient's hepcidin-25 and erythroferrone levels were not elevated compared to those observed later in her clinical course. On the other hand, her growth differentiation factor-15 (GDF-15) levels were elevated. She was diagnosed to have heart failure symptoms and anemia with specific iron metabolism abnormalities due to a B19V infection...
November 1, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29076102/epidemiological-profile-of-acute-viral-encephalitis
#6
Rajesh Kumar, Pankaj Kumar, Manoj Kumar Singh, Dipti Agarwal, Bendangienla Jamir, Shashi Khare, Samrendra Narayan
OBJECTIVE: To study the etiology and clinico-epidemiological profile of acute viral encephalitis in children with acute encephalitis syndrome (AES). METHODS: An observational study including 100 patients fulfilling the criteria for AES was conducted in children of age group 1 mo - 16 y. Viral isolation was done on RD cells, HEp-2 cells and Vero cells from the cerebrospinal fluid samples of suspected viral encephalitis (VE) cases. An enzyme immunoassay for IgM antibodies was performed for measles, mumps, Varicella zoster virus (VZV), Herpes simplex virus 1 (HSV1) and Japanese encephalitis virus (JEV)...
October 27, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29052875/clinical-significance-of-parvovirus-b19-dna-in-cutaneous-biopsies
#7
COMMENT
M Söderlund-Venermo
No abstract text is available yet for this article.
October 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/29026475/human-parvovirus-b19-in-children-with-sickle-cell-disease-poking-the-spleen
#8
Ashraf Abdellah Saad, Ismail Beshlawi, Abdul Hakim Al-Rawas, Mathew Zachariah, Hanan Fawzy Nazir, Yasser Wali
Parvovirus is a known culprit of transient red cell aplasia (TRCA) in children with sickle cell disease (SCD). Few reports have previously described the association between the virus and acute splenic sequestration crisis (ASSC) in the same patient. Here, we are shedding light on such a potentially serious combination by reporting two cases of siblings with SCD complicated with concurrent ASSC and TRCA and presenting a review of the relevant literature.
September 2017: Oman Medical Journal
https://www.readbyqxmd.com/read/29020199/viral-surveillance-in-serum-samples-from-patients-with-acute-liver-failure-by-metagenomic-next-generation-sequencing
#9
Sneha Somasekar, Deanna Lee, Jody Rule, Samia N Naccache, Mars Stone, Michael P Busch, Corron Sanders, William M Lee, Charles Y Chiu
Background: Twelve percent of all acute liver failure (ALF) cases are of unknown origin, often termed indeterminate. A previously unrecognized hepatotropic virus has been suspected as a potential etiologic agent. Methods: We compared the performance of metagenomic next-generation sequencing (mNGS) with confirmatory nucleic acid testing (NAT) to routine clinical diagnostic testing in detection of known or novel viruses associated with ALF. Serum samples from 204 adult ALF patients collected from 1998 to 2010 as part of a nationwide registry were analyzed...
October 16, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28992849/severe-myoglobinuric-acute-kidney-injury-in%C3%A2-a%C3%A2-kidney-recipient-rapid-recovery-after-hemodialysis-with-the-super-high-flux-membrane-theralite%C3%A2-%C3%A2
#10
Ahmed Goubella, Fabrice Gankam-Kengne, Thomas Baudoux, David Fagnoul, Cécile Husson, Marie-Luce Delforge, Nilufer Broeders, Joëlle Nortier
Myoglobinuric acute kidney injury (AKI) is a severe condition requiring early therapeutic strategies. Early recognition and treatment are crucial to reduce morbidity and mortality rate. Here, we report a kidney recipient with severe rhabdomyolysis and AKI secondary to parvovirus B19 infection. Initiation of hemodialysis with the super high-flux filter Theralite® (Gambro, cut-off 45 kDa, 2.1 m2) resulted in the clearance of myoglobin from 61 to 71% after 3 hours. Elimination rates of IL-6 and β2-microglobulin were ~ 30 - 64% and 55 - 71% after 3 hours, respectively...
October 10, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28962582/low-levels-of-antibodies-against-common-viruses-associate-with-anti-citrullinated-protein-antibody-positive-rheumatoid-arthritis-implications-for-disease-aetiology
#11
Natalia Sherina, Hulda S Hreggvidsdottir, Camilla Bengtsson, Monika Hansson, Lena Israelsson, Lars Alfredsson, Karin Lundberg
BACKGROUND: Infection by common viruses has long been discussed in the aetiology of a number of autoimmune diseases, including rheumatoid arthritis (RA). However, studies investigating this hypothesis in RA show conflicting results. These studies often lack well-matched control populations, and many do not include data on autoantibodies, genetic risk factors and other environmental factors, which are known to contribute to disease only in subgroups of patients. In the present study, we have therefore examined the role of Epstein-Barr virus (EBV), cytomegalovirus (CMV) and parvovirus B19 (B19) in RA aetiology, by analysing anti-viral antibodies in relation to anti-citrullinated protein antibodies (ACPA), smoking, HLA-DRB1 shared epitope (SE) alleles, and clinical parameters, in both RA patients and matched controls...
September 30, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28961998/human-parvovirus-b19-b19v-up-regulates-cxcr4-surface-expression-of-circulating-angiogenic-cells-implications-for-cardiac-ischemia-in-b19v-cardiomyopathy
#12
Caroline Schmidt-Lucke, Thomas Zobel, Felicitas Escher, Carsten Tschöpe, Dirk Lassner, Uwe Kühl, Knut Gubbe, Hans-Dieter Volk, Heinz-Peter Schultheiss
Background: Human parvovirus B19 (B19V) infection and damage of circulating angiogenic cells (CAC) results in dysfunctional endogenous vascular repair (DEVR) with secondary end-organ damage. Trafficking of CAC is regulated by SDF-1α and the respective receptor CXCR4. We thus tested the hypothesis of a deregulated CXCR4/SDF-1α axis in symptomatic B19V-cardiomyopathy. Methods: CAC were infected in vitro with B19V and transfected with B19V-components. Read-out were: CXCR4-expression and migratory capacity at increasing doses of SDF-1α...
August 17, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28960143/antigenicity-analysis-of-human-parvovirus-b19-vp1u-protein-in-the-induction-of-anti-phospholipid-syndrome
#13
Chun-Yu Lin, Chun-Ching Chiu, Ju Cheng, Chia-Yun Lin, Ya-Fang Shi, Chun-Chou Tsai, Bor-Show Tzang, Tsai-Ching Hsu
Mounting evidence suggests a connection between human parvovirus B19 (B19) and autoimmune diseases, and especially an association between the B19-VP1 unique region (VP1u) and antiphospholipid syndrome (APS). However, little is known about the antigenicity of B19-VP1u in the induction of APS-like syndrome. To elucidate the antigenicity of B19-VP1u in the induction of APS, N-terminal truncated B19-VP1u (tVP1u) proteins were prepared to immunize Balb/c mice to generate antibodies against B19-tVP1u proteins. The secreted phospholipase A2 (sPLA2) activities and binding specificity of mice anti-B19-tVP1u antibodies with cardiolipin (CL) and beta-2-glycoprotein I (β2GPI) were evaluated by performing immunoblot, ELISA and absorption experiments...
September 29, 2017: Virulence
https://www.readbyqxmd.com/read/28951104/detection-of-human-parvovirus-b19-in-serum-samples-from-children-under-5-years-of-age-with-rash-fever-illnesses-in-the-democratic-republic-of-the-congo
#14
Tony Bokalanga Wawina, Olivier Mbaya Tshiani, Steve Mundeke Ahuka, Elisabeth Simbu Pukuta, Michel Ntetani Aloni, Christopher Jacob Kasanga, Jean-Jacques Tamfum Muyembe
BACKGROUND: It has been demonstrated that infection with human parvovirus B19 (B19V) is associated with rash-fever illnesses. The present study aimed to investigate B19V as an aetiological agent of rash-fever syndromes in Congolese children confirmed as measles and rubella IgM-negative. An ELISA IgM test and PCR were performed to screen for B19V. METHODS: A total of 177 archived serum samples were randomly selected from the measles biobank of the National Institute for Biomedical Research (INRB)...
September 22, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28946175/parameters-associated-with-adverse-fetal-outcomes-in-parvovirus-b19-congenital-infection
#15
Isabela Karine Rodrigues Agra, Antonio Gomes Amorim Filho, Lawrence Hsu Lin, Sckarlet Ernandes Biancolin, Rossana Pulcineli Vieira Francisco, Maria de Lourdes Brizot
Objective To investigate the clinical and sonographic parameters associated with adverse fetal outcomes in patients with congenital parvovirus B19 infection managed by intrauterine transfusion. Methods This was a single-center retrospective study conducted from January 2005 to December 2016 that assessed patients with singleton pregnancies with fetal parvovirus infection confirmed by a polymerase chain reaction of the amniotic fluid or fetal blood samples who underwent at least one intrauterine transfusion...
November 2017: Revista Brasileira de Ginecologia e Obstetrícia
https://www.readbyqxmd.com/read/28945149/risk-of-developing-antiphospholipid-antibodies-following-viral-infection-a-systematic-review-and-meta-analysis
#16
N Abdel-Wahab, S Talathi, M A Lopez-Olivo, M E Suarez-Almazor
Objective The objective of this paper is to conduct a systematic review and meta-analysis on the risk of developing elevated antiphospholipid (aPL) antibodies and related thromboembolic and/or pregnancy events following a viral infection. Method We searched Medline, EMBASE, Web of Science, PubMed ePubs, and Cochrane Central Register of Controlled Trials through June 2016. Independent observational studies of elevated aPL antibodies in patients with a viral infection compared with controls or patients with lupus were included...
January 1, 2017: Lupus
https://www.readbyqxmd.com/read/28941869/transcription-associated-mutational-pressure-in-the-parvovirus-b19-genome-reactivated-genomes-contribute-to-the-variability-of-viral-populations
#17
Vladislav Victorovich Khrustalev, Marina Anatolyevna Ermalovich, Judith M Hübschen, Tatyana Aleksandrovna Khrustaleva
In this study we used non-overlapping parts of the two long open reading frames coding for nonstructural (NS) and capsid (VP) proteins of all available sequences of the Parvovirus B19 subgenotype 1a genome and found out that the rates of A to G, C to T and A to T mutations are higher in the first long reading frame (NS) of the virus than in the second one (VP). This difference in mutational pressure directions for two parts of the same viral genome can be explained by the fact of transcription of just the first long reading frame during the lifelong latency in nonerythroid cells...
December 21, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28935566/construction-of-protein-functionalized-virus-like-particles-of-parvovirus-b19
#18
Ismael Bustos-Jaimes, Ricardo Arturo Soto-Román, Isabel Alejandra Gutiérrez-Landa, Josefina Valadez-García, Carla Lizbeth Segovia-Trinidad
Decoration of virus-like particles (VLPs) expands the repertory of functions these particles can display. In the last years, VLPs have successfully been used as scaffolds to present different molecules, frequently through the specific reaction of chemical groups on the surface of the particles, or by protein engineering when the presentation of peptides or proteins is the primary goal. VLPs of parvovirus B19 (B19V), have been previously produced in vitro and its stability and ability to assemble into hybrid particles composed of wild-type and chimeric proteins evidenced their potential as research tools...
September 19, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28914852/-efficiency-of-immunosuppressive-therapy-in-virus-negative-and-virus-positive-patients-with-morphologically-verified-lymphocytic-myocarditis
#19
O V Blagova, A V Nedostup, E A Kogan, V A Sulimov
AIM: To evaluate the efficiency of immunosuppressive therapy (IST) in virus-negative (V-) and virus-positive (V+) patients with lymphocytic myocarditis (LM). SUBJECTS AND METHODS: 60 patients (45 males) (mean age 46.7±11.8 years) with dilated cardiomyopathy (mean left ventricular (LV) end diastolic size (EDS) 6.7±0.7 cm; ejection fraction (EF) 26.2±9.1%) were examined. The diagnosis of active/borderline LM was verified by right ventricular endomyocardial biopsy in 38 patients, by intraoperative LV biopsy in 10, in the study of explanted hearts from 3 patients and at autopsy in 9...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28904056/simultaneously-monitoring-immune-response-and-microbial-infections-during-pregnancy-through-plasma-cfrna-sequencing
#20
Wenying Pan, Thuy T M Ngo, Joan Camunas-Soler, Chun-Xiao Song, Mark Kowarsky, Yair J Blumenfeld, Ronald J Wong, Gary M Shaw, David K Stevenson, Stephen R Quake
BACKGROUND: Plasma cell-free RNA (cfRNA) encompasses a broad spectrum of RNA species that can be derived from both human cells and microbes. Because cfRNA is fragmented and of low concentration, it has been challenging to profile its transcriptome using standard RNA-seq methods. METHODS: We assessed several recently developed RNA-seq methods on cfRNA samples. We then analyzed the dynamic changes of both the human transcriptome and the microbiome of plasma during pregnancy from 60 women...
September 13, 2017: Clinical Chemistry
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