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Parvovirus b19

Steven Abrams, Andreas Wienke, Niel Hens
Frailty models are often used in survival analysis to model multivariate time-to-event data. In infectious disease epidemiology, frailty models have been proposed to model heterogeneity in the acquisition of infection and to accommodate association in the occurrence of multiple types of infection. Although traditional frailty models rely on the assumption of lifelong immunity after recovery, refinements have been made to account for reinfections with the same pathogen. Recently, Abrams and Hens quantified the effect of misspecifying the underlying infection process on the basic and effective reproduction number in the context of bivariate current status data on parvovirus B19 and varicella zoster virus...
April 2018: Journal of the Royal Statistical Society. Series C, Applied Statistics
Lola Madrid, Rosauro Varo, Sonia Maculuve, Tacilta Nhampossa, Carmen Muñoz-Almagro, Enrique J Calderón, Cristina Esteva, Carla Carrilho, Mamudo Ismail, Begoña Vieites, Vicente Friaza, María Del Carmen Lozano-Dominguez, Clara Menéndez, Quique Bassat
BACKGROUND: Congenital cytomegalovirus (cCMV) infection is the most prevalent congenital infection acquired worldwide, with higher incidence in developing countries and among HIV-exposed children. Less is known regarding vertical transmission of parvovirus B19 (B19V) and enterovirus (EV). We aimed to assess the prevalence of CMV, B19V and EV vertical transmission and compare results of screening of congenital CMV obtained from two different specimens in a semirural Mozambican maternity...
2018: PloS One
Panagiota Zikidou, Anastassia Grapsa, Zoe Bezirgiannidou, Athanassios Chatzimichael, Elpis Mantadakis
Background: Human parvovirus B19 (HPV-B19) is the etiologic agent of erythema infectiosum, of transient aplastic crises in individuals with underlying chronic hemolytic disorders, and of chronic pure red cell aplasia in immunocompromised individuals. Case report: We describe a 14-year-old girl with long-standing Evans syndrome, who presented with severe anemia, reticulocytopenia and thrombocytopenia. A bone marrow aspirate revealed severe erythroid hypoplasia along with the presence of giant pronormoblasts, while serological studies and real-time PCR of whole blood were positive for acute parvovirus B19 infection...
2018: Mediterranean Journal of Hematology and Infectious Diseases
Camille Zambaz, Diana Dan
Arthritis and arthralgia during a viral infection are often polyarticular and symmetric and can mimic rheumatoid arthritis. Depending on germs, others signs and symptoms as fever, cutaneous rash (Parvovirus B19) or jaundice (hepatitis) can be present. Worldwide most common germs are Parvovirus B19, hepatitis B and C, HIV and alphavirus. There are significant differences throughout the world and epidemiology continues to evolve with a progression of vector-borne infections. Diagnosis of viral arthritis is often difficult and is based on epidemiological, clinical and serological data...
March 7, 2018: Revue Médicale Suisse
Noha Tharwat Abou El-Khier, Ahmad Darwish, Maysaa El Sayed Zaki
Background: Parvovirus B19 is a common viral infection in children. Nearby evidences are present about its association with acute leukemia, especially acute lymphoblast leukemia. Nevertheless, scanty reports have discussed any role in acute myeloid leukemia (AML). Purpose: To evaluate the frequency of virological markers of B19 infection including its DNA along with specific immunoglobulins G (IgG) and M (IgM) among children with newly diagnosed AML. Besides, describing the clinical importance of Parvovirus B19 infection in those patients...
February 26, 2018: Asian Pacific Journal of Cancer Prevention: APJCP
P N Brennan, M C Donnelly, K J Simpson
BACKGROUND: A significant proportion of cases of acute liver failure (ALF) do not have an identifiable cause; so called "non A-E," "non A, non B, non C," "seronegative" or "indeterminate" hepatitis. However, this entity is clinically not well described. AIM: To collate the known incidence and outcomes in indeterminate hepatitis. This systematic review sought to identify potential aetiologies that ought to be considered, and identify likely future objectives in classification and treatment strategies for indeterminate hepatitis...
February 21, 2018: Alimentary Pharmacology & Therapeutics
E A Kogan, O V Blagova, N M Faizullina, A V Nedostup, V A Sulimov
AIM: to investigate the myocardial expression of some structural proteins and markers of cellular proliferation and innate immunity for assessing their possible diagnostic and prognostic role in patients with chronic myocarditis. SUBJECTS AND METHODS: The investigation enrolled 23 patients (16 men; mean age, 52.0±12.4 years (range, 27 to 73) with various forms of noncoronarogenic myocardial injury who underwent right ventricular endomyocardial biopsy (n=4), intraoperative left ventricular biopsy (n=17) or autopsy (n=2)...
2018: Arkhiv Patologii
Satoshi Hara, Masayoshi Hirata, Kiyoaki Ito, Ichiro Mizushima, Hiroshi Fujii, Kazunori Yamada, Michio Nagata, Mitsuhiro Kawano
Human parvovirus B19 infection causes a variety of glomerular diseases such as post-infectious acute glomerulonephritis and collapsing glomerulopathy. Although each of these appears independently, it has not been fully determined why parvovirus B19 provokes such a variety of different glomerular phenotypes. Here, we report a 68-year-old Japanese man who showed endocapillary proliferative glomerulonephritis admixed with podocytopathy in association with parvovirus B19 infection. The patient showed acute onset of heavy proteinuria, microscopic hematuria and kidney dysfunction with arthralgia and oliguria after close contact with a person suffering from erythema infectiosum...
February 19, 2018: Pathology International
Jacopo Monticelli, Nicholas Geremia, Pierlanfranco D'Agaro, Vincenzo Petix, Roberto Luzzati
Despite the availability of nucleic acid amplification tests (NAATs), most of aseptic acute meningitides, encephalitides, and meningoencephalitides (AAMEMs) in adults remain of unknown etiology so far. To shed light on such topic, we aimed to evaluate potential predictors for AAMEMs of unknown origin. We collected retrospectively data from all consecutive cases of AAMEMs in adults discharged from an Italian referral hospital, from January 2004 to December 2016. Laboratory analysis included common immunometric methods and NAATs...
February 17, 2018: Neurological Sciences
David Juhl, Holger Hennig
Parvovirus B19 (B19V) has been discovered in 1975. The association with a disease was unclear in the first time after the discovery of B19V, but meanwhile, the usually droplet transmitted B19V is known as the infectious agent of the "fifth disease," a rather harmless children's illness. But B19V infects erythrocyte progenitor cells and thus, acute B19V infection in patients with a high erythrocyte turnover may lead to a life-threatening aplastic crisis, and acutely infected pregnant women can transmit B19V to their unborn child, resulting in a hydrops fetalis and fetal death...
2018: Frontiers in Medicine
Safder S Ganaie, Aaron Yun Chen, Chun Huang, Peng Xu, Steve Kleiboeker, Aifang Du, Jianming Qiu
Human parvovirus B19 (B19V) expresses a single precursor mRNA (pre-mRNA), which undergoes alternative splicing and alternative polyadenylation to generate 12 viral mRNA transcripts that encode two structural proteins (VP1 and VP2) and three nonstructural proteins (NS1, 7.5-kDa, and 11-kDa). Splicing at the second 5' donor site (D2) of the B19V pre-mRNA is essential for the expression of VP2 and 11-kDa. We have previously identified that a cis -acting intronic splicing enhancer 2 (ISE2) that lies immediately after the D2 site facilitates recognition of the D2 donor for its efficient splicing...
February 7, 2018: Journal of Virology
Aida Zečkanović, Matej Perovnik, Janez Jazbec, Miroslav Petrovec, Marko Pokorn, Marko Kavčič
We report a case of a 12-year-old male with glucose-6-phosphate dehydrogenase deficiency presenting with clinical signs of sepsis and pancytopenia. Investigations revealed parvovirus B19 (PVB19)-associated hemophagocytic lymphohistiocytosis (HLH). The patient recovered fully and quickly with symptomatic treatment. Current evidence suggests that PVB19-associated HLH has a favorable prognosis. Mild undiagnosed cases of HLH may be the cause of pancytopenia in PVB19 infections.
February 9, 2018: Journal of Pediatric Hematology/oncology
Adriana Christie Lacerda Simões, Tinara Leila de Souza Aarão, Jorge Rodrigues de Sousa, Diogo Lima Prudente, Yaisa Gomes de Castro, Rodrigo Bona Maneschy, Hellen Thais Fuzii, Juarez Antonio Simões Quaresma
Parvovirus B19 (PVB19) is a virus found in the skin that causes asymptomatic infections and can exist in the host for long periods to time. The virus induces a local inflammatory response and is associated with the development of arthritis and other autoimmunes diseases. Parvovirus B19 DNA was investigated by PCR in the skin of 20 patients with psoriasis and 20 patients with eczema. Additionally, immunohistochemistry was used to characterize the expression of cytokines in these lesions. The sociodemographic variables were similar in the two groups studied...
February 8, 2018: Microbial Pathogenesis
C Santonja, L Requena, J Polo Sabau, U Pielasinski Rodríguez
No abstract text is available yet for this article.
January 2018: British Journal of Dermatology
Kumaran Vadivel, Mageshbabu Ramamurthy, Sathish Sankar, Amita Jain, Padma Srikanth, Asit Ranjan Ghosh, Balaji Nandagopal, Aravindan Nair, Gopalan Sridharan
BACKGROUND & OBJECTIVES: Parvovirus B19 infections occur worldwide; the infection is acquired early in childhood but could occur later. B19 is reported to cause infection in childhood febrile illnesses, and arthropathies in adults and children and in end-stage renal disease (ESRD) seen in adults. This study was designed to develop an in-house IgM indirect ELISA for serological screening among patients and controls, and to compare ELISA results with those of nested polymerase chain reaction (nPCR) assay...
September 2017: Indian Journal of Medical Research
Nasir Idris Abdullahi, Medugu Jessy Thomas, Amos Dangana
No abstract text is available yet for this article.
January 18, 2018: Journal of Biomedical Research
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
Christina Weiler-Normann, Johannes Hartl, Sören Weidemann, Ute-Marie von Pein, Walter Fiedler, Christoph Schramm, Florian Brinkert, Nicolaus Kröger, Maximilian Christopeit
Severe aplastic anemia is a rare and potentially life-threatening disease of the bone marrow often requiring allogeneic hematopoietic stem cell transplantation. Pathogenesis of the disease can vary and often remains enigmatic. Occasionally, severe aplastic anemia is associated with prior severe acute hepatitis. Differential diagnosis of acute non-viral hepatitis challenges the physician as pathogenesis remains unclear.We here present a case of a young patient presenting with acute hepatitis followed by severe aplastic anemia successfully treated with allogeneic hematopoietic stem cell transplantation...
January 2018: Zeitschrift Für Gastroenterologie
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
Idris Abdullahi Nasir, Jessy Thomas Medugu, Amos Dangana
No abstract text is available yet for this article.
November 1, 2017: Journal of Biomedical Research
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