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Human parvovirus B19

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https://www.readbyqxmd.com/read/29333409/human-parvovirus-b19-and-parvovirus-4-among-iranian-patients-with-hemophilia
#1
Davod Javanmard, Masood Ziaee, Hadi Ghaffari, Mohammad Hasan Namaei, Ahmad Tavakoli, Hamidreza Mollaei, Mohsen Moghoofei, Helya Sadat Mortazavi, Seyed Hamidreza Monavari
Background: Human parvovirus B19 (B19V) is one of the smallest DNA viruses and shows great resistance to most disinfectants. Therefore, it is one of the common contaminant pathogens present in blood and plasma products. Parvovirus 4 (PARV4) is a newly identified parvovirus, which is also prevalent in parenteral transmission. In this study, we aimed to evaluate the prevalence of B19V and PARV4 DNA among patients with hemophilia in Birjand County in eastern Iran. Methods: This was a cross-sectional epidemiological study comprising nearly all people with hemophilia in this region...
December 2017: Blood Research
https://www.readbyqxmd.com/read/29297965/the-impact-of-alternative-donor-types-on-viral-infections-in-pediatric-hematopoietic-stem-cell-transplantation
#2
D Atay, A Akcay, F Erbey, G Ozturk
Viral infections remain one of the most important complications following allogeneic HSCT. Few reports compare virus infection between different donor types in pediatric patients. We retrospectively analyzed viral infections and the outcome of one hundred and seventy-one pediatric patients (median 7.38 years) who underwent allogeneic HSCT from matched related donor (MRD, n = 71), 10 of 10 HLA allele-matched unrelated donors (MUD1; n = 29), 9 of 10 HLA allele-matched unrelated donors (MUD2; n = 40), and haploidentical donors (n = 31)...
January 3, 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29277833/human-parvovirus-b19-associated-hematopathy-in-hiv-disease-need-for-clinicopathological-revisit
#3
Idris Abdullahi Nasir, Jessy Thomas Medugu, Amos Dangana
No abstract text is available yet for this article.
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29237843/human-parvovirus-b19-utilizes-cellular-dna-replication-machinery-for-viral-dna-replication
#4
Wei Zou, Zekun Wang, Min Xiong, Aaron Yun Chen, Peng Xu, Safder S Ganaie, Yomna Badawi, Steve Kleiboeker, Hiroshi Nishimune, Shui Qing Ye, Jianming Qiu
Human parvovirus B19 (B19V) infection of human erythroid progenitor cells (EPCs) induces a DNA damage response and cell cycle arrest at late S phase, which facilitates viral DNA replication. However, it is not clear exactly which cellular factors are employed by this single-stranded DNA virus. Here, we used microarrays to systematically analyze the dynamic transcriptome of EPCs infected with B19V. We found that DNA metabolism, DNA replication, DNA repair, DNA damage response, cell cycle, and cell cycle arrest pathways were significantly regulated after B19V infection...
December 13, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29186956/how-viruses-infiltrate-the-central-nervous-system
#5
A Michalicová, K Bhide, M Bhide, A Kováč
Central nervous system is protected by the blood-brain barrier, which represents a physical, metabolic and transport barrier and is considered to be a part of a highly dynamic system termed neurovascular unit. Several pathogens, among them viruses, are able to invade the brain. Traversal of viruses across the blood-brain barrier is an essential step for the invasion of the central nervous system and can occur by different mechanisms - by paracellular, transcellular and/or by "Trojan horse" pathway. Penetration of viruses to brain can lead to the blood-brain barrier dysfunction, including increased permeability, pleocytosis and encephalopathy...
2017: Acta Virologica
https://www.readbyqxmd.com/read/29185251/ultrasound-indications-for-maternal-storch-testing-in-pregnancy
#6
Cora Alexandra Voekt, Therese Rinderknecht, Hans Hellmuth Hirsch, Annette Blaich, Irene Mathilde Hösli
AIMS OF THE STUDY: Fetal abnormalities found on ultrasonography lead to a variety of diagnostic procedures, including a panel of serologies to detect possible maternal STORCH infections encompassing syphilis, Toxoplasma gondii, rubella, cytomegalovirus, herpes simplex, and others (human immunodeficiency virus, hepatitis B and C, parvovirus B19, enterovirus, varicella zoster, and Leptospira interrogans). The value of indiscriminate testing for infections upon the detection of fetal ultrasound abnormalities has been questioned...
November 29, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29184906/parvovirus-b19-in-the-context-of-hematopoietic-stem-cell-transplantation-evaluating-cell-donors-and-recipients
#7
Bianca E Gama, Vanessa E Emmel, Michelle Oliveira-Silva, Luciana M Gutiyama, Leonardo Arcuri, Marta Colares, Rita de Cássia Tavares, Luis F Bouzas, Eliana Abdelhay, Rocio Hassan
Background: Parvovirus B19 (B19V) is a common human pathogen, member of the family Parvoviridae. Typically, B19V has been found to infect erythroid progenitors and cause hematological disorders, such as anemia and aplastic crisis. However, the persistence of genomic deoxyribonucleic acid (DNA) has been demonstrated in tonsils, liver, skin, brain, synovial, and testicular tissues as well as bone marrow, for both symptomatic and asymptomatic subjects. Although the molecular and cellular mechanisms of persistence remain undefined, it raises questions about potential virus transmissibility and its effects in the context of allogeneic hematopoietic stem cell transplantation (allo-HSCT) recipients...
November 2017: Transplantation Direct
https://www.readbyqxmd.com/read/29170063/incidence-and-progression-of-parvovirus-b19-infection-and-molecular-changes-in-circulating-b19v-strains-in-children-with-haematological-malignancy-a-follow-up-study
#8
Amita Jain, Parul Jain, Archana Kumar, Shantanu Prakash, Danish Nasar Khan, Ravi Kant
The present study was planned to estimate the incidence of human Parvovirus B19 infection and understand its progression in children suffering with hematological malignancy. The circulating B19V genotypes and viral mutations occurring in strains of B19V over one-year period were also studied. Children with malignancies were enrolled consecutively and were followed up for one-year period. Serum sample was collected at the time of enrolment and each follow up visit and was tested for anti B19V IgG and IgM as well as for B19V DNA...
November 20, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29096233/parvovirus-b19-infection-in-pregnancy-awareness-and-opportunities
#9
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...
December 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/29095139/parvovirus-b19-in-hiv-adult-patients-with-different-cd4-lymphocyte-counts
#10
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
#11
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
#12
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/29026475/human-parvovirus-b19-in-children-with-sickle-cell-disease-poking-the-spleen
#13
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
#14
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/28961998/human-parvovirus-b19-b19v-up-regulates-cxcr4-surface-expression-of-circulating-angiogenic-cells-implications-for-cardiac-ischemia-in-b19v-cardiomyopathy
#15
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
#16
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
#17
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/28945149/risk-of-developing-antiphospholipid-antibodies-following-viral-infection-a-systematic-review-and-meta-analysis
#18
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/28904056/simultaneously-monitoring-immune-response-and-microbial-infections-during-pregnancy-through-plasma-cfrna-sequencing
#19
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
https://www.readbyqxmd.com/read/28863892/simultaneous-detection-and-differentiation-of-human-parvovirus-b19-and-human-parvovirus-4-by-an-internally-controlled-multiplex-quantitative-real-time-pcr
#20
Junting Jia, Yadi Zhong, Yi Guo, Chaoji Huangfu, Xiong Zhao, Chi Fang, Rui Fan, Yuyuan Ma, Jingang Zhang
Human parvovirus B19 (B19V) and human parvovirus 4 (PARV4) are two parvoviruses known to infect humans and transmit through blood and plasma derived medicinal products (PDMPs). Inactivation of the two parvoviruses has proven to be difficult and nucleic acid testing (NAT) would be an efficient means to exclude viruses. In this study, an internally controlled multiplex quantitative real-time PCR (qPCR) assay for B19V and PARV4 simultaneous detection and quantification was established and evaluated. The optimized multiplex qPCR assay allowed for simultaneous detection of all of the genotypes (1-3) of B19V and PARV4, with equal limit of quantification (LOQ) of 5 copies/μL, rather than other blood-borne viruses...
December 2017: Molecular and Cellular Probes
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