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https://www.readbyqxmd.com/read/28731923/human-bocavirus-can-it-trigger-hemophagocytic-lymphohistiocytosis
#1
Sevgen Tanir Basaranoglu, Kubra Aykac, Yasemin Ozsurekci, Inci Bajin, Betul Tavil, Fatma Gumruk, Mehmet Ceyhan
With improvements in molecular diagnostic methods, report of Human bocavirus (HBoV) as an etiologic agent in many studies on viral respiratory and gastrointestinal infections has been increasing. Two pediatric patients who presented with secondary hemophagocytic lymphohistiocytosis were examined for etiologic causes, including viruses. Whole bacterial and fungal cultures and viral serological studies were negative. Viral polymerase chain reaction of nasopharyngeal secretions showed HBoV. One was successfully treated with intravenous immunoglobulins, whereas the other died with multiorgan failure...
July 20, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28719504/severe-lower-respiratory-tract-infection-caused-by-human-bocavirus-1-in-an-infant
#2
Vesa Eskola, Man Xu, Maria Söderlund-Venermo
We report a case of human bocavirus 1 (HBoV1) bronchiolitis that led to life-threatening respiratory failure in a 9-month-old boy with no other pathogens detected. The virus-specific diagnosis was confirmed with the detection of HBoV1 DNA in respiratory samples and both DNA and immunoglobulins M and G to HBoV1 in serum samples.
July 13, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28716110/phylogenic-analysis-of-human-bocavirus-detected-in-children-with-acute-respiratory-infection-in-yaounde-cameroon
#3
Sebastien Kenmoe, Marie-Astrid Vernet, Mohamadou Njankouo-Ripa, Véronique Beng Penlap, Astrid Vabret, Richard Njouom
OBJECTIVE: Human Bocavirus (HBoV) was first identified in 2005 and has been shown to be a common cause of respiratory infections and gastroenteritis in children. In a recent study, we found that 10.7% of children with acute respiratory infections (ARI) were infected by HBoV. Genetic characterization of this virus remains unknown in Central Africa, particularly in Cameroon Leeding us to evaluate the molecular characteristics of HBoV strains in Cameroonian children with ARI. RESULTS: Phylogenetic analysis of partial HBoV VP1/2 sequences showed a low level of nucleotide variation and the circulation of HBoV genotype 1 (HBoV-1) only...
July 17, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28708249/the-impact-of-anthropogenic-pressure-on-the-virological-quality-of-water-from-the-tiber-river-italy
#4
G La Rosa, I Sanseverino, S Della Libera, M Iaconelli, V E V Ferrero, A Barra Caracciolo, T Lettieri
The objective of the present study was to assess the occurrence of major waterborne enteric viruses (enterovirus, norovirus, adenovirus, rotavirus, hepatitis A and E virus) along the Tiber River in Italy, in areas affected by different kinds of anthropogenic pressure (agricultural, urban, industrial, and pristine). Moreover, in light of the recent abundant detection of human bocavirus in urban wastewater samples in Italy, the occurrence of this virus was also assessed. Virus detection was based on nested PCR followed by sequencing, and on Real Time PCR...
July 14, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28672995/human-bocavirus-induces-apoptosis-and-autophagy-in-human-bronchial-epithelial-cells
#5
You-Ping Deng, Ying-Juan Liu, Zhan-Qiu Yang, Yan-Jun Wang, Bing-Yan He, Pin Liu
Human bocavirus (HBoV) is classified in the Bocavirus genus within the Parvoviridae family, first identified from children with respiratory diseases. Previous studies have investigated the stimulating effect of HBoV on cell apoptosis and autophagy. In the present study, human bronchial epithelial cells (HBECs) were utilized to examine the mechanism of HBoV recombination expressing vector (pWHL-1) on the promotion of cell apoptosis and autophagy. The results from the present study indicated that pWHL-1 inhibited the proliferation of HBECs in a time-dependent manner...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28659483/human-bocavirus-1-is-a-novel-helper-for-adeno-associated-virus-replication
#6
Zekun Wang, Xuefeng Deng, Wei Zou, John F Engelhardt, Ziying Yan, Jianming Qiu
Human bocavirus 1 (HBoV1) is an autonomous parvovirus that infects well-differentiated primary human airway epithelia (HAE) in vitro. In human embryonic kidney (HEK) 293 cells, transfection of a duplex HBoV1 genome initiates viral DNA replication and produces progeny virions that are infectious in HAE. HBoV1 takes advantage of signaling pathways in the DNA damage response for efficient genome amplification in both well-differentiated (non-dividing) HAE and dividing HEK293 cells. On the other hand, adeno-associated virus 2 (AAV2) is a helper-dependent dependoparvovirus, and productive AAV2 replication requires co-infection with a helper virus (e...
June 28, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28657532/-human-bocavirus-1-role-in-the-acute-respiratory-infection-and-epidemiology-in-cordoba-argentina
#7
REVIEW
María Pilar Adamo
Human bocavirus 1 (HBoV1) is an agent of acute respiratory infection frequent in children. It can cause pneumonia in infants, in the absence of epidemiological risk factors and comorbidities. Well-controlled studies of clinical cases and case series are still useful for the characterization of the clinicoepideiological features of the infection, while research dives on the molecular biology of the virus and the virus-cell relationship allowing to unveil tha natural history of the infection. This article reviews the state of the art and future perspectives on this new human parvovirus and its etiological role in the respiratory pathology...
2017: Revista de la Facultad de Ciencias Médicas
https://www.readbyqxmd.com/read/28647513/respiratory-syncytial-virus-bronchiolitis-weather-conditions-and-air-pollution-in-an-italian-urban-area-an-observational-study
#8
Raffaella Nenna, Melania Evangelisti, Antonella Frassanito, Carolina Scagnolari, Alessandra Pierangeli, Guido Antonelli, Ambra Nicolai, Serena Arima, Corrado Moretti, Paola Papoff, Maria Pia Villa, Fabio Midulla
BACKGROUND: In this study we sought to evaluate the association between viral bronchiolitis, weather conditions, and air pollution in an urban area in Italy. METHODS: We included infants hospitalized for acute bronchiolitis from 2004 to 2014. All infants underwent a nasal washing for virus detection. A regional agency network collected meteorological data (mean temperature, relative humidity and wind velocity) and the following air pollutants: sulfur dioxide, nitrogen oxide, carbon monoxide, ozone, benzene and suspended particulate matter measuring less than 10µm (PM10) and less than 2...
June 22, 2017: Environmental Research
https://www.readbyqxmd.com/read/28639594/viral-aetiology-of-wheezing-in-children-under-five
#9
Prithi Sureka Mummidi, Radha Tripathy, Bhagirathi Dwibedi, Amarendra Mahapatra, Suryakanta Baraha
BACKGROUND & OBJECTIVES: Wheezing is a common problem in children under five with acute respiratory infections (ARIs). Viruses are known to be responsible for a considerable proportion of ARIs in children. This study was undertaken to know the viral aetiology of wheezing among the children less than five years of age, admitted to a tertiary care hospital in eastern India. METHODS: Seventy five children, under the age of five years admitted with wheezing, were included in the study...
February 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28634031/does-atopy-affect-the-course-of-viral-pneumonia
#10
S B Erdem, D Can, S Girit, F Çatal, V Şen, S Pekcan, H Yüksel, A Bingöl, I Bostancı, D Erge, R Ersu
BACKGROUND: The presence of atopy is considered as a risk factor for severe respiratory symptoms in children. The objective of this study was to examine the effect of atopy on the course of disease in children hospitalised with viral pneumonia. METHODS: Children between the ages of 1 and 6 years hospitalised due to viral pneumonia between the years of 2013 and 2016 were included to this multicentre study. Patients were classified into two groups as mild-moderate and severe according to the course of pneumonia...
June 17, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28507089/atypical-pneumonia-due-to-human-bocavirus-in-an-immunocompromised-patient
#11
Kaien Gu, Paul Van Caeseele, Kerry Dust, Julie Ho
No abstract text is available yet for this article.
May 15, 2017: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/28500864/identification-of-human-bocavirus-type-4-in-a-child-asymptomatic-for-respiratory-tract-infection-and-acute-gastroenteritis-goi%C3%A3-nia-goi%C3%A3-s-brazil
#12
Teresinha Teixeira de Sousa, Tâmera Nunes Vieira Almeida, Fabíola Souza Fiaccadori, Menira Souza, Kareem Rady Badr, Divina das Dôres de Paula Cardoso
Human Bocavirus (HBoV) has been identified from feces and respiratory samples from cases of both acute gastroenteritis and respiratory illness as well as in asymptomatic individuals. The aim of this study was to detect and characterize HBoV from fecal samples collected from hospitalized children aged less than five years old with no symptoms of respiratory tract infection (RTI) or acute gastroenteritis (AGE). The study involved 119 children and one fecal sample was collected from each participant between 2014 and 2015...
May 10, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28495649/identification-and-molecular-characterization-of-novel-primate-bocaparvoviruses-from-wild-western-lowland-gorillas-of-moukalaba-doudou-national-park-gabon
#13
Chimene Nze-Nkogue, Masayuki Horie, Shiho Fujita, Eiji Inoue, Etienne-François Akomo-Okoue, Makoto Ozawa, Alfred Ngomanda, Juichi Yamagiwa, Kyoko Tsukiyama-Kohara
Bocaparvoviruses have been studied extensively owing to their ability to cause respiratory illness or gastroenteritis in humans. Some bocaparvoviruses have been detected in non-human primates (gorillas and chimpanzees), but the diversity and evolution of these viruses are not fully understood. In this study, we collected 107 fecal samples from wild western lowland gorillas in Moukalaba-Doudou National Park in Gabon to investigate the presence of bocaparvoviruses. Using a combination of pan-bocaparvovirus PCR and individual identification by microsatellite genotyping, we found that two samples from two apparently healthy infant gorillas were positive for bocaparvovirus...
May 8, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28490200/human-bocavirus-type-1-capsid-facilitates-the-transduction-of-ferret-airways-by-adeno-associated-virus-genomes
#14
Ziying Yan, Zehua Feng, Xingshen Sun, Yulong Zhang, Wei Zou, Zekun Wang, Chandler Jensen-Cody, Bo Liang, Soo-Yeun Park, Jianming Qiu, John F Engelhardt
Human bocavirus type-1 (HBoV1) has a high tropism for the apical membrane of human airway epithelia. The packaging of a recombinant adeno-associated virus 2 (rAAV2) genome into HBoV1 capsid produces a chimeric vector (rAAV2/HBoV1) that also efficiently transduces human airway epithelia. As such, this vector is attractive for use in gene therapies to treat lung diseases such as cystic fibrosis. However, preclinical development of rAAV2/HBoV1 vectors has been hindered by the fact that humans are the only known host for HBoV1 infection...
May 10, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28457983/assessment-of-ns1-gene-specific-real-time-quantitative-taqman-pcr-for-the-detection-of-human-bocavirus-in-respiratory-samples
#15
Marco Ligozzi, Erica Diani, Federica Lissandrini, Rosanna Mainardi, Davide Gibellini
Human Bocaviruses (HBoV) were associated with respiratory diseases. Here, we assessed a TaqMan(®)-based PCR for the detection of all four HBoV subtype infections with a sensitivity up to 15 copies/reaction. To evaluate this assay on clinical samples, 178 nasopharyngeal aspirate specimens from pediatric cases were analyzed and HBoV genome was detected in 13 out of 178 patients with a viral load range between 1.6 × 10(3) and 9.4 × 10(7) copies/ml. These results indicated that this method could be used as an alternative technique for the diagnosis of HBoV infection...
April 27, 2017: Molecular and Cellular Probes
https://www.readbyqxmd.com/read/28456924/genomic-recombination-in-primate-bocavirus-inconsistency-and-alternative-interpretations
#16
REVIEW
Yee Ling Chong, Kar Hon Ng
Human bocavirus (HBoV) is a single-stranded DNA virus in Parvoviridae family, causing respiratory diseases in human. The recent identifications of genomic recombination among the four human bocavirus genotypes and related non-human primate bocaviruses have shed lights into the evolutionary processes underpinning the diversity of primate bocavirus. Among these reports, however, we found inconsistency and possible alternative interpretations of the recombination events. In this study, these recombination events were reviewed, and the related genome sequences were re-analysed, aiming to inform the research community of bocavirus with more consistent knowledge and comprehensive interpretations on the recombination history of primate bocavirus...
April 29, 2017: Virus Genes
https://www.readbyqxmd.com/read/28443581/bocavirus-viremia-and-hepatitis-in-an-immunocompetent-child
#17
Zeliha Haytoğlu, Oğuz Canan
BACKGROUND: So far, many studies have shown that Human Bocavirus ( HBoV) is the main pathogen of the respiratory tract. Until now, there is no study that proves the association between HBoV and hepatitis. HBoV viremia/DNAemia has been associated closely with acute primary infection and moderate-to-severe illness but, more detailed clinical data about HBoV dissemination are still unavailable. CASE REPORT: Here we report a 2-years-5-months-old girl suffering from respiratory distress and heptitis followed in our intensive care unit...
May 5, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28379530/comparative-diagnosis-of-human-bocavirus-1-respiratory-infection-with-messenger-rna-reverse-transcription-polymerase-chain-reaction-pcr-dna-quantitative-pcr-and-serology
#18
Man Xu, Benedict Arku, Tuomas Jartti, Janne Koskinen, Ville Peltola, Klaus Hedman, Maria Söderlund-Venermo
Background.: Human bocavirus (HBoV) 1 can cause life-threatening respiratory tract infection in children. Diagnosing acute HBoV1 infection is challenging owing to long-term airway persistence. We assessed whether messenger RNA (mRNA) detection would correlate better than DNA detection with acute HBoV1 infection. Methods.: Paired serum samples from 121 children with acute wheezing were analyzed by means of serology. Quantitative polymerase chain reaction (PCR) and reverse-transcription (RT) PCR were applied to nasopharyngeal swab (NPS) samples from all acutely HBoV1-infected children and from controls with nonacute infection...
May 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28373908/surveillance-for-respiratory-infectious-diseases-caused-by-6-common-viruses-in-a-recruit-training-site-in-the-northern-region-of-china
#19
Wei-Wei Chen, Wen Xu, Yang-Xin Xie, Yun-Hui Zhang, Dan Wu, Fu-Sheng Wang, Min Zhao
BACKGROUND: Recruit training sites are places with a high incidence of respiratory infectious diseases. Effective surveillance for acute respiratory infectious diseases in a recruit training site is an important way to prevent disease outbreaks. METHODS: Eight hundred recruits (722 males and 78 females) enlisted in autumn 2015 received a background survey within 24 h of settlement at the recruit training site, including their general personal information, vaccination history, mental status and clinical symptoms...
2017: Military Medical Research
https://www.readbyqxmd.com/read/28368491/viral-pathogen-detection-by-metagenomics-and-pan-viral-group-polymerase-chain-reaction-in-children-with-pneumonia-lacking-identifiable-etiology
#20
Robert Schlaberg, Krista Queen, Keith Simmon, Keith Tardif, Chris Stockmann, Steven Flygare, Brett Kennedy, Karl Voelkerding, Anna Bramley, Jing Zhang, Karen Eilbeck, Mark Yandell, Seema Jain, Andrew T Pavia, Suxiang Tong, Krow Ampofo
Background.: Community-acquired pneumonia (CAP) is a leading cause of pediatric hospitalization. Pathogen identification fails in approximately 20% of children but is critical for optimal treatment and prevention of hospital-acquired infections. We used two broad-spectrum detection strategies to identify pathogens in test-negative children with CAP and asymptomatic controls. Methods.: Nasopharyngeal/oropharyngeal (NP/OP) swabs from 70 children <5 years with CAP of unknown etiology and 90 asymptomatic controls were tested by next-generation sequencing (RNA-seq) and pan viral group (PVG) PCR for 19 viral families...
May 1, 2017: Journal of Infectious Diseases
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