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https://www.readbyqxmd.com/read/28424790/development-of-isothermal-recombinase-polymerase-amplification-assay-for-rapid-detection-of-porcine-circovirus-type-2
#1
Yang Yang, Xiaodong Qin, Yingjun Sun, Guozheng Cong, Yanmin Li, Zhidong Zhang
Porcine circovirus virus type II (PCV2) is the etiology of postweaning multisystemic wasting syndrome (PMWS), porcine dermatitis, nephropathy syndrome (PDNS), and necrotizing pneumonia. Rapid diagnosis tool for detection of PCV2 plays an important role in the disease control and eradication program. Recombinase polymerase amplification (RPA) assays using a real-time fluorescent detection (PCV2 real-time RPA assay) and RPA combined with lateral flow dipstick (PCV2 RPA LFD assay) were developed targeting the PCV2 ORF2 gene...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28420390/a-novel-viewrna-in-situ-hybridization-method-for-the-detection-of-the-dynamic-distribution-of-classical-swine-fever-virus-rna-in-pk15-cells
#2
Qianyi Zhang, Lu Xu, Yujie Zhang, Tuanjie Wang, Xingqi Zou, Yuanyuan Zhu, Yan Zhao, Cui Li, Kai Chen, Yongfang Sun, Junxiang Sun, Qizu Zhao, Qin Wang
BACKGROUND: Classical swine fever (CSF) is a highly contagious fatal infectious disease caused by classical swine fever virus (CSFV). A better understanding of CSFV replication is important for the study of pathogenic mechanism of CSF. With the development of novel RNA in situ Hybridization method, quantitatively localization and visualization of the virus RNA molecular in cultured cell or tissue section becomes very important tool to address these pivotal pathogenic questions. In this study, we established ViewRNA ISH method to reveal the dynamic distribution of CSFV RNA in PK15 cells...
April 18, 2017: Virology Journal
https://www.readbyqxmd.com/read/28414634/detection-of-the-canine-parvovirus-2c-subtype-in-australian-dogs
#3
Lucy Woolford, Paul Crocker, Hannah Bobrowski, Trevor Baker, Farhid Hemmatzadeh
Canine parvovirus (CPV-2) is an important cause of hemorrhagic enteritis in dogs. In Australia the disease has been associated with CPV-2a and CPV-2b variants. A third more recently emerged variant overseas, CPV-2c, has not been detected in surveys of the Australian dog population. In this study, we report three cases of canine parvoviral enteritis associated with CPV-2c infection; case 1 occurred in an 8-week-old puppy that died following acute hemorrhagic enteritis. Cases 2 and 3 were an 11-month-old female entire Saint Bernard and a 9-month-old male entire Siberian husky, respectively, both which had completed vaccination schedules and presented with vomiting or mild diarrhea only...
April 17, 2017: Viral Immunology
https://www.readbyqxmd.com/read/28412176/human-parvovirus-b19-nosocomial-outbreak-in-healthcare-personnel-in-a-paediatric-ward-at-a-national-tertiary-referral-centre-in-thailand
#4
S Sungkate, W Phongsamart, S Rungmaitree, K Lapphra, O Wittawatmongkol, V Pumsuwan, N Wiruchkul, S Assanasen, Y Rongrungruang, N Onlamoon, N Horthongkham, W Lermankul, N Kongstan, K Chokephaibulkit
BACKGROUND: Nosocomial outbreaks of parvovirus B19 (pB19) have been reported, but they rarely occur among healthcare personnel (HCP). Susceptibility among pregnant HCP was the major concern. METHODS: An outbreak of pB19 among HCP is described in a paediatric ward with a cross-sectional serologic study in all HCP and patients exposed to the outbreak. Acute infection was diagnosed by polymerase chain reaction or positive anti-parvovirus B19 IgM. FINDINGS: Among 48 HCP (three pregnant) and 22 patients included in the outbreak serologic study, 11 (23%) HCP and two (9%) patients had acute infection...
March 18, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28410608/cross-sectional-survey-of-selected-enteric-viruses-in-polish-turkey-flocks-between-2008-and-2011
#5
K Domańska-Blicharz, Ł Bocian, A Lisowska, A Jacukowicz, A Pikuła, Z Minta
BACKGROUND: Enteric diseases are an important health problem for the intensive poultry industry, resulting in considerable economic losses. Apart from such microbiological agents associated with enteritis as bacteria and parasites, a lot of research has been recently conducted on viral origin of enteric diseases. However, enteric viruses have been identified in intestinal tract of not only diseased but also healthy poultry, so their role in enteritis is still unclear. The present study aimed at determination of the prevalence of four enteric viruses, namely astrovirus, coronavirus, parvovirus and rotavirus in meat-type turkey flocks in Poland as well as at statistical evaluation of the occurrence of the studied viruses and their relationships with the health status and the age of birds...
April 14, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28410597/the-role-of-nuclear-localization-signal-in-parvovirus-life-cycle
#6
REVIEW
Peng Liu, Shun Chen, Mingshu Wang, Anchun Cheng
Parvoviruses are small, non-enveloped viruses with an approximately 5.0 kb, single-stranded DNA genome. Usually, the parvovirus capsid gene contains one or more nuclear localization signals (NLSs), which are required for guiding the virus particle into the nucleus through the nuclear pore. However, several classical NLSs (cNLSs) and non-classical NLSs (ncNLSs) have been identified in non-structural genes, and the ncNLSs can also target non-structural proteins into the nucleus. In this review, we have summarized recent research findings on parvovirus NLSs...
April 14, 2017: Virology Journal
https://www.readbyqxmd.com/read/28408693/complete-genome-sequences-of-porcine-parvovirus-2-isolated-from-swine-in-the-republic-of-korea
#7
Ju-Yeon Lee, Eun-Ju Kim, In-Soo Cho, Kyoung-Ki Lee, Yeun-Kyung Shin
Here, we report sequences of the porcine parvovirus 2 (PPV2) genome, isolated from pigs in the Republic of Korea in 2016. The sequences of open reading frames 1 and 2 (ORF1 and ORF2) had a 98.8 to 98.9% homology with the US135 strain and 98.8% homology with the US523 strain, respectively. This is the first study to report the PPV2 genome in South Korean pigs.
April 13, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28403966/-intrauterine-blood-transfusion-status-report-of-4years-of-practice-in-france-2011-2014
#8
A Girault, S Friszer, E Maisonneuve, L Guilbaud, A Cortey, J-M Jouannic
OBJECTIVES: The aim of our study was to evaluate in utero blood transfusion's (IUT) performed in France, among the French prenatal diagnosis centers in order to study the etiology of severe anemia requiring IUT. METHODS: We conducted a national retrospective descriptive study between 2011 and 2014. The data were collected using a survey sent by email to all French prenatal diagnosis centers. RESULTS: Among the 49 centers, 18 (38 %) had performed at least one IUT during the study period...
February 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28401102/human-parvovirus-b19-in-patients-with-beta-thalassemia-major-from-tehran-iran
#9
Seyed Ali Mohammad Arabzadeh, Farideh Alizadeh, Ahmad Tavakoli, Hamidreza Mollaei, Farah Bokharaei-Salim, Gharib Karimi, Mohammad Farahmand, Helya Sadat Mortazavi, Seyed Hamidreza Monavari
BACKGROUND: Due to the tropism of human parvovirus B19 to erythroid progenitor cells, infection in patients with an underlying hemolytic disorder such as beta-thalassemia major leads to suppression of erythrocyte formation, referred to as transient aplasia crisis (TAC), which may be life-threatening. We investigated the prevalence of parvovirus B19 among patients with beta thalassemia major attending the Zafar Adult Thalassemia Clinic in Tehran, Iran. METHODS: This cross-sectional study was performed to determine the presence of parvovirus B19 DNA in blood samples and parvovirus B19 genotypes in plasma samples of patients with thalassemia major...
March 2017: Blood Research
https://www.readbyqxmd.com/read/28399176/pathological-findings-in-the-red-fox-vulpes-vulpes-stone-marten-martes-foina-and-raccoon-dog-nyctereutes-procyonoides-with-special-emphasis-on-infectious-and-zoonotic-agents-in-northern-germany
#10
Charlotte Lempp, Nicole Jungwirth, Miguel L Grilo, Anja Reckendorf, Arlena Ulrich, Abbo van Neer, Rogier Bodewes, Vanessa M Pfankuche, Christian Bauer, Albert D M E Osterhaus, Wolfgang Baumgärtner, Ursula Siebert
Anthropogenic landscape changes contributed to the reduction of availability of habitats to wild animals. Hence, the presence of wild terrestrial carnivores in urban and peri-urban sites has increased considerably over the years implying an increased risk of interspecies spillover of infectious diseases and the transmission of zoonoses. The present study provides a detailed characterisation of the health status of the red fox (Vulpes vulpes), stone marten (Martes foina) and raccoon dog (Nyctereutes procyonoides) in their natural rural and peri-urban habitats in Schleswig-Holstein, Germany between November 2013 and January 2016 with focus on zoonoses and infectious diseases that are potentially threatening to other wildlife or domestic animal species...
2017: PloS One
https://www.readbyqxmd.com/read/28398685/parvovirus-b19-infection-during-pregnancy-and-risks-to-the-fetus
#11
REVIEW
Asher Ornoy, Zivanit Ergaz
Parvovirus B19 infects 1 to 5% of pregnant women, generally with normal pregnancy outcomes. During epidemics, the rate of infection is higher. Major congenital anomalies among offspring of infected mothers are rare, as the virus does not appear to be a significant teratogen. However, parvovirus B19 infection may cause significant fetal damage, and in rare cases, brain anomalies and neurodevelopmental insults, especially if infection occurs in the first 20 weeks of pregnancy. Parvovirus B19 is also an important cause of fetal loss, especially in the second half of pregnancy when spontaneous fetal loss from other causes is relatively rare...
March 15, 2017: Birth Defects Res
https://www.readbyqxmd.com/read/28397477/real-time-pcr-detection-of-the-most-common-bacteria-and-viruses-causing-meningitis
#12
Oya Akkaya, Hulya Iren Guvenc, Serife Yuksekkaya, Aysegul Opus, Asuman Guzelant, Meral Kaya, Muhammet Guzel Kurtoglu, Nurettin Kaya
BACKGROUND: Central nervous system (CNS) infections require prompt diagnosis, as the clinical condition progresses rapidly and may lead to severe permanent sequelae or death. The causative agents include viruses, bacteria, fungi, and parasites. In this study, samples with the diagnosis of CNS infection based on cerebrospinal fluid (CSF) sent to us from other hospitals/labs, were studied by multiplex real-time Polymerase Chain Reaction (PCR) method. The purpose of this study is to demonstrate, retrospectively, the most common bacteria and viruses causing meningitis and seasonal distribution of these agents using the multiplex real-time PCR method in CSF samples...
April 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28387173/pure-red-cell-aplasia-due-to-parvovirus-b19-erythropoietin-resistant-anemia-in-a-pediatric-kidney-recipient
#13
Baris Malbora, Serdar Saritas, Eda Ataseven, Burcu Belen, Caner Alparslan, Onder Yavascan, Dilek Yilmaz Ciftdogan, Berna Atabay, Meral Turker
No abstract text is available yet for this article.
April 6, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28382380/ungulate-copiparvovirus-2-in-healthy-and-postweaning-multisystemic-wasting-syndrome-affected-pigs
#14
Samuel P Cibulski, Thais F Teixeira, Ana Paula M Varela, Camila M Scheffer, Helton F Santos, Francisco E S Lima, Paulo M Roehe
A SYBR Green-based real-time polymerase chain reaction (qPCR) was designed to detect Ungulate copiparvovirus 2, also known as porcine parvovirus 4 (PPV4). The test was applied to search for PPV4 DNAemia in sera from 1- to 4-month-old pigs displaying signs of postweaning multisystemic wasting syndrome (PMWS), as well as in sera from healthy swine at equivalent age and in sera from older healthy animals (>6 months old). High levels of PPV4 DNA were detected in PMWS-affected pigs. The mean viral DNA load in PMWS-affected pigs was 5...
April 5, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28377277/hydroxyurea-inhibits-parvovirus-b19-replication-in-erythroid-progenitor-cells
#15
Francesca Bonvicini, Gloria Bua, Ilaria Conti, Elisabetta Manaresi, Giorgio Gallinella
Parvovirus B19 (B19V) infection is restricted to erythroid progenitor cells (EPCs) of the human bone marrow, leading to transient arrest of erythropoiesis and severe complications mainly in subjects with underlying hematological disorders or with immune system deficits. Currently, there are no specific antiviral drugs for B19V treatment, but identification of compounds inhibiting B19V replication can be pursued by a drug repositioning strategy. In this frame, the present study investigates the activity of hydroxyurea (HU), the only disease-modifying therapy approved for sickle cell disease (SCD), towards B19V replication in the two relevant cellular systems, the UT7/EpoS1 cell line and EPCs...
April 1, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28377078/pathogen-safety-and-characterisation-of-a-highly-purified-human-alpha1-proteinase-inhibitor-preparation
#16
Scott Kee, David Weber, Birgit Popp, Thomas Nowak, Wolfram Schäfer, Albrecht Gröner, Nathan J Roth
Alpha1-proteinase inhibitor (A1PI) deficiency is a genetic condition predisposing to emphysema. Respreeza/Zemaira, a therapeutic preparation of A1PI, is prepared from human plasma. This article describes the purity and stability of Respreeza/Zemaira and the capacity of virus and prion reduction steps incorporated into its manufacturing process. Purity and stability of Respreeza/Zemaira were analysed using established methods. To test pathogen clearance capacity, high levels of test viruses/prions were spiked into aliquots of production intermediates and clearance studies were performed for selected manufacturing steps, under production and robustness conditions, using validated scale-down models...
April 1, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28374737/extinct-type-of-human-parvovirus-b19-persists-in-tonsillar-b-cells
#17
Lari Pyöriä, Mari Toppinen, Elina Mäntylä, Lea Hedman, Leena-Maija Aaltonen, Maija Vihinen-Ranta, Taru Ilmarinen, Maria Söderlund-Venermo, Klaus Hedman, Maria F Perdomo
Parvovirus B19 (B19V) DNA persists lifelong in human tissues, but the cell type harbouring it remains unclear. We here explore B19V DNA distribution in B, T and monocyte cell lineages of recently excised tonsillar tissues from 77 individuals with an age range of 2-69 years. We show that B19V DNA is most frequent and abundant among B cells, and within them we find a B19V genotype that vanished from circulation >40 years ago. Since re-infection or re-activation are unlikely with this virus type, this finding supports the maintenance of pathogen-specific humoral immune responses as a consequence of B-cell long-term survival rather than continuous replenishment of the memory pool...
April 4, 2017: Nature Communications
https://www.readbyqxmd.com/read/28373861/environmental-issues-in-thyroid-diseases
#18
REVIEW
Silvia Martina Ferrari, Poupak Fallahi, Alessandro Antonelli, Salvatore Benvenga
Environmental factors are determinant for the appearance of autoimmune thyroid diseases (AITD) in susceptible subjects. Increased iodine intake, selenium, and vitamin D deficiency, exposure to radiation, from nuclear fallout or due to medical radiation, are environmental factors increasing AITD. Cigarette smoking is associated with Graves' disease and Graves' ophthalmopathy, while it decreases the risk of hypothyroidism and thyroid autoimmunity. Viral infections are important environmental factors in the pathogenesis of AITD, too, particularly human parvovirus B19 (EVB19) and hepatitis C virus...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28369973/persistent-symptomatic-parvovirus-b19-infection-with-severe-thrombocytopenia-transmitted-by-red-blood-cell-transfusion-containing-low-parvovirus-b19-dna-levels
#19
Keiki Nagaharu, Yuka Sugimoto, Yuji Hoshi, Takanori Yamaguchi, Ryugo Ito, Keiji Matsubayashi, Keiki Kawakami, Kohshi Ohishi
BACKGROUND: Transfusion-mediated human parvovirus B19 (PVB19) infection is rare but often causes severe hematologic disorders. In Japan, routine blood donor screening for PVB19 antigen (detection sensitivity, 10(6.4) IU/mL) using a chemiluminescent enzyme immunoassay (CLEIA) was introduced in 2008. However, there is no consensus on the minimal infectious dose of PVB19 permissible for red blood cells (RBCs). CASE REPORT: A 64-year-old man, who had received hemodialysis for diabetic nephropathy for 5 years, underwent an RBC transfusion for anemia caused by hemorrhagic enterocolitis...
April 2, 2017: Transfusion
https://www.readbyqxmd.com/read/28369886/efficacy-of-feline-anti-parvovirus-antibodies-in-the-treatment-of-canine-parvovirus-infection
#20
M Gerlach, A L Proksch, S Unterer, S Speck, U Truyen, K Hartmann
OBJECTIVE: This prospective, randomised, placebo-controlled, double-blinded study aimed to evaluate efficacy of commercially available feline anti-parvovirus antibodies in dogs with canine parvovirus infection. METHODS: First, cross-protection of feline panleukopenia virus antibodies against canine parvovirus was evaluated in vitro. In the subsequent prospective clinical trial, 31 dogs with clinical signs of canine parvovirus infection and a positive faecal canine parvovirus polymerase chain reaction were randomly assigned to a group receiving feline panleukopenia virus antibodies (n=15) or placebo (n=16)...
March 31, 2017: Journal of Small Animal Practice
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