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Intervirology

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https://www.readbyqxmd.com/read/28468008/effect-of-maxing-shigan-tang-on-h1n1-influenza-a-virus-associated-acute-lung-injury-in-mice
#1
Yanchun Zhong, Jie Zhou, Ning Liang, Bihao Liu, Ruirui Lu, Yu He, Chunlin Liang, Junbiao Wu, Yuan Zhou, Miaomiao Hu, Jiuyao Zhou
OBJECTIVE: This study is aimed at examining the effects of Maxing Shigan Tang (MST) treatment on H1N1-associated acute lung injury (ALI) and exploring the possible mechanism. MATERIAL AND METHODS: Mice were randomly divided into a control group, model group, peroxisomal proliferator activator receptor γ (PPARγ) inhibition group (PPARγ-), PPARγ activation group (PPARγ+), and MST group. Influenza A (H1N1) virus of the Fort Monmouth 1 (FM1) strain was used to induce an ALI mice model...
May 4, 2017: Intervirology
https://www.readbyqxmd.com/read/28402975/frequent-pul27-variations-in-hiv-infected-patients
#2
Azam Mirarab, Alireza Mohebbi, Abdolvahab Moradi, Naeme Javid, Mohammad Ali Vakili, Alijan Tabarraei
OBJECTIVE: Drug-resistant isolates of human cytomegalovirus (HCMV) have led to the development of new anti-HCMV drugs. Maribavir (MBV) is a novel inhibitor of the HCMV viral kinase. Resistance to MBV is mapped to gene UL27, a viral nuclear protein. In this study, we investigated UL27 polymorphisms in MBV-naive HIV-positive and HCMV congenitally infected clinical samples. METHODS: DNA was extracted from 20 CMV-positive HIV (9/20) and congenitally infected (11/20) patients and used for UL27 polymerase chain reaction amplification...
April 13, 2017: Intervirology
https://www.readbyqxmd.com/read/28402973/low-risk-of-developing-chronic-hepatitis-e-in-heart-transplant-recipients-a-prospective-2-year-follow-up-study
#3
Sven Pischke, Christoph Bara, Patrick Behrendt, Axel Haverich, Michael P Manns, Heiner Wedemeyer
No abstract text is available yet for this article.
April 13, 2017: Intervirology
https://www.readbyqxmd.com/read/28402970/the-genotyping-resistance-profile-of-the-pol-gene-detected-in-blood-of-newly-diagnosed-hiv-positive-men-is-durably-archived-in-the-gut-whatever-the-time-of-initiation-of-cart
#4
Anne Emmanuelle Depincé, Elodie Dussert, Delphine Vergnon-Miszczycha, Abdelaye Keita, Sylvie Pillet, Elisabeth Botelho-Nevers, Anne Frésard, Amandine Gagneux-Brunon, Frédéric R Lucht, Xavier Roblin, Bruno Pozzetto, Stéphane Paul, Thomas Bourlet
OBJECTIVE: To evaluate the mutational patterns on the pol gene of the main HIV-1 strain archived in cell genome of 10 chronically infected men according to their clinical and therapeutic history. The genotyping resistance profiles were compared between the first blood plasma available at the time of HIV diagnosis and rectal biopsies and PBMC sampled 1-5 years after the initiation of combined antiretroviral therapy (cART). METHODS: HIV-1 RNA and cell-associated HIV-1 DNA were quantified by Abbott Real-Time HIV-1 and Generic HIV® DNA cell (Biocentric) assays...
April 13, 2017: Intervirology
https://www.readbyqxmd.com/read/28384626/complete-genome-sequence-of-proteus-mirabilis-phage-ppm_01-isolated-from-raw-sewage
#5
Ira Aryani Wirjon, Nyok-Sean Lau, Yahya Mat Arip
OBJECTIVES: Phage pPM_01 was previously isolated from a raw sewage treatment facility located in Batu Maung, Penang, Malaysia, and it was highly lytic against Proteus mirabilis, which causes urinary tract infections in humans. In this paper, we characterize the biology and complete genome sequence of the phage. METHODS AND RESULTS: Transmission electron microscopy revealed phage pPM_01 to be a siphovirus (the first reported virus to infect P. mirabilis), with its complete genome sequence successfully determined...
April 7, 2017: Intervirology
https://www.readbyqxmd.com/read/28329739/peptides-derived-from-glycoproteins-h-and-b-of-herpes-simplex-virus-type-1-and-herpes-simplex-virus-type-2-are-capable-of-blocking-herpetic-infection-in-vitro
#6
Abraham Cetina-Corona, Uriel López-Sánchez, Juana Salinas-Trujano, Alfonso Méndez-Tenorio, Blanca Lilia Barrón, Jesus Torres-Flores
AIMS: The aim of this study was to design peptides derived from glycoproteins H (gH) and B (gB) of herpes simplex viruses type 1 (HSV-1) and type 2 (HSV-2) with the potential to block herpetic infection and to evaluate their ability to inhibit HSV-1 and HSV-2 infection in vitro. METHODS: A library of continuous 15-25 residue stretches (CRSs) located at the surface of gH and gB from HSV-1 and HSV-2 was created. These CRSs were analyzed, and only those that were highly flexible and rich in charged residues were selected for the design of the antiviral peptides (AVPs)...
March 23, 2017: Intervirology
https://www.readbyqxmd.com/read/28334725/predominance-of-g9p-4-rotavirus-from-children-with-acute-gastroenteritis-in-northwestern-mexico
#7
Leticia Felix-Valenzuela, Dora Patricia Cooley-García, Manuel Alberto Cano-Rangel, Maria de Los Angeles Durazo-Arvizu, Veronica Mata-Haro
In Mexico, group A rotavirus (RVA) infections remain the most common cause of severe dehydrating diarrhea in children. This study was conducted to examine the circulating RVA strains in the northwest region of Mexico. RVA strains collected from stool samples of children were genotyped, and their partial sequences were analyzed. RT-PCR of the VP4 and VP7 genes showed the partial G9P[4] genotype in all the samples. Sequencing and phylogenetic analysis of the partial VP7 gene amplicons of 10 strains showed that they clustered in the RVA G9 lineage III, and 7 of them showed 100% identity with the reference strain LB1562, which was collected in the USA 2 years earlier...
2016: Intervirology
https://www.readbyqxmd.com/read/28329744/antiviral-and-immunomodulatory-effects-of-norantea-brasiliensis-choisy-on-dengue-virus-2
#8
Luciana Gomes Fialho, Vagner Pereira da Silva, Sônia Regina Nogueira Ignácio Reis, Elzinandes Leal Azeredo, Maria Auxiliadora Coelho Kaplan, Maria Raquel Figueiredo, Claire Fernandes Kubelka
BACKGROUND/AIMS: Severe dengue fever is a result of exacerbated immune responses and no specific treatments are available. We evaluated the antiviral and immunomodulatory effects of Norantea brasiliensis Choisy. METHODS: Human adherent monocytes infected in vitro with dengue virus (DENV)-2 were incubated with the crude ethanol extract from leaves (NB1) or 3 derived fractions: dichloromethane (NB3), ethyl acetate (NB5), and butanolic (NB6) partitions. The antiviral and immunomodulatory activities were determined by intracellular detection of DENV antigen within monocytes and by secreted NS1 viral protein and cytokines...
2016: Intervirology
https://www.readbyqxmd.com/read/28278509/evaluation-of-the-automated-qiasymphony-sp-as-workflow-for-cytomegalovirus-dna-extraction-and-amplification-from-dried-blood-spots
#9
Daniela Spalletti-Cernia, Sara Barbato, Rosanna Sorrentino, Luca Vallefuoco, Caterina Rocco, Pasquale Di Costanzo, Antonella Giannattasio, Francesco Raimondi, Claudia Mazzarella, Roberta De Mattia, Giuseppe Portella
OBJECTIVE: Human cytomegalovirus (CMV) can be considered the most important agent of congenital infection. Long-term sequelae of congenital infection occur in about 15% of infants asymptomatic at birth. To avoid long-term sequelae or to reduce their burden, it is necessary to identify infected children for early interventions. CMV DNA can be detected in dried blood spots (DBSs). DBSs have been used in several studies for the retrospective diagnosis of congenital CMV (CCMV). It has been proposed to use DBSs for the newborn screening of CMV infection; however, manual methods are not suitable for newborn screening of CCMV...
2016: Intervirology
https://www.readbyqxmd.com/read/28208132/an-outbreak-of-acute-hepatitis-caused-by-genotype-ib-hepatitis-a-viruses-contaminating-the-water-supply-in-thailand
#10
Kriangsak Ruchusatsawat, Jongkonnee Wongpiyabovorn, Chonthicha Kawidam, Laddawan Thiemsing, Somchai Sangkitporn, Sayaka Yoshizaki, Masashi Tatsumi, Naokazu Takeda, Koji Ishii
BACKGROUND: In 2000, an outbreak of acute hepatitis A was reported in a province adjacent to Bangkok, Thailand. AIMS: To investigate the cause of the 2000 hepatitis A outbreaks in Thailand using molecular epidemiological analysis. METHODS: Serum and stool specimens were collected from patients who were clinically diagnosed with acute viral hepatitis. Water samples from drinking water and deep-drilled wells were also collected. These specimens were subjected to polymerase chain reaction (PCR) amplification and sequencing of the VP1/2A region of the hepatitis A virus (HAV) genome...
2016: Intervirology
https://www.readbyqxmd.com/read/28208127/prevalence-of-occult-hepatitis-c-virus-infection-among-blood-donors-in-jiangsu-china
#11
Hong Lin, Xian Chen, Shaowen Zhu, Ping Mao, Shanshan Zhu, Yanchun Liu, Chengyin Huang, Jun Sun, Jin Zhu
OBJECTIVE: In 2010, only 1 donor blood sample was found to be anti-hepatitis C virus (HCV) negative and HCV RNA positive, as detected by nucleic acid testing. In occult HCV infection (OCI), HCV RNA is found in peripheral blood mononuclear cells (PBMCs). We investigated the prevalence of OCI among blood donors. METHODS: We collected 513 samples from 334 eligible and 179 deferred donors, including 55 anti-HCV-positive, 113 alanine aminotransferase (ALT)-elevated, and 11 hepatitis B virus surface antigen (HBsAg)-positive blood donors...
2016: Intervirology
https://www.readbyqxmd.com/read/28178699/identification-of-the-nuclear-localization-signal-region-of-duck-enteritis-virus-ul14-and-its-interaction-with-vp16
#12
FangJie Li, YuWei Zhang, Shun Chen, MingShu Wang, RenYong Jia, DeKang Zhu, MaFeng Liu, KunFeng Sun, Qiao Yang, Ying Wu, XiaoYue Chen, AnChun Cheng
OBJECT: Duck enteritis virus (DEV) is a member of the Alphaherpesvirinae viruses. VP16 and pUL14 are both predicted to be tegument proteins of DEV. METHODS: An indirect immunofluorescence assay (IFA) was performed for preliminary analysis of the colocalization of pUL14 and VP16, which detected their subcellular localization in duck embryo fibroblasts (DEFs) during virus replication. The coexpression of pUL14 and VP16 was detected in transfected DEFs. A bimolecular fluorescence complementation (BiFC) assay was used to confirm a direct interaction between pUL14 and VP16...
2016: Intervirology
https://www.readbyqxmd.com/read/28142135/frequency-and-genotype-of-human-parvovirus-b19-among-iranian-hemodialysis-and-peritoneal-dialysis-patients
#13
Alireza Sharif, Arezoo Aghakhani, Ali Akbar Velayati, Mohammad Banifazl, Mohammad Reza Sharif, Effat Razeghi, Davood Kheirkhah, Monireh Kazemimanesh, Anahita Bavand, Amitis Ramezani
OBJECTIVES: The aim of this study was to evaluate the frequency and genotype of human parvovirus B19 and its relation with anemia among Iranian patients under dialysis. METHODS: Fifty hemodialysis (HD) and 33 peritoneal dialysis (PD) patients were enrolled. B19 IgG and IgM antibodies were assessed by ELISA, and the presence of B19 DNA was evaluated by nested PCR. PCR products were sequenced directly and phylogenetic analysis was performed. RESULTS: In the HD group, the prevalence of B19 antibodies was 54% for IgG and 4% for IgM...
2016: Intervirology
https://www.readbyqxmd.com/read/28132064/genotype-distribution-and-prevalence-of-human-pegivirus-among-high-risk-populations-in-tunisia
#14
Imen Ben Dhifallah, Kaouther Ayouni, Anissa Chouiha, Amel Sadraoui, Nahed Hogga, Walid Hammami, Ahlem Ben Yahya, Henda Triki
OBJECTIVE: A recently discovered non-A-E hepatitis virus has been designated as human Pegivirus (HPgV). HPgV is prevalent in high-risk groups such as patients with hepatitis C virus (HCV), and it is of interest for patients who are at risk for transmitted infections. The aim of this study was to evaluate the prevalence of HPgV as well as the genotype distribution among patients in the Tunisian population who are infected with HCV and also in multitransfused patients. METHODS: A total of 144 patients were screened using RTPCR/nested PCR of the 5'-untranslated region (UTR); 14 cases were sequenced and phylogenetically analyzed...
2016: Intervirology
https://www.readbyqxmd.com/read/28103598/coronavirus-infections-in-the-central-nervous-system-and-respiratory-tract-show-distinct-features-in-hospitalized-children
#15
Yuanyuan Li, Haipeng Li, Ruyan Fan, Bo Wen, Jian Zhang, Xiaoying Cao, Chengwu Wang, Zhanyi Song, Shuochi Li, Xiaojie Li, Xinjun Lv, Xiaowang Qu, Renbin Huang, Wenpei Liu
BACKGROUND/AIMS: Coronavirus (CoV) infections induce respiratory tract illnesses and central nervous system (CNS) diseases. We aimed to explore the cytokine expression profiles in hospitalized children with CoV-CNS and CoV-respiratory tract infections. METHODS: A total of 183 and 236 hospitalized children with acute encephalitis-like syndrome and respiratory tract infection, respectively, were screened for anti-CoV IgM antibodies. The expression profiles of multiple cytokines were determined in CoV-positive patients...
2016: Intervirology
https://www.readbyqxmd.com/read/28095374/human-cytomegalovirus-infection-in-nonimmunocompromised-patients-a-retrospective-analysis-and-review-of-the-literature
#16
REVIEW
Konstantin Zedtwitz-Liebenstein, Magda Diab-Elschahaw, Michael Frass
In a retrospective analysis of patients visiting the Outpatient Department of the Division of Infectious Diseases and Tropical Medicine over a period of 3 years, we found a high incidence of symptomatic nonsevere human cytomegalovirus (HCMV) infection in nonimmunocompromised patients. We present 11 symptomatic cases of HCMV infection in nonimmunocompromised patients with non-life-threatening symptoms like long-lasting depletion, fatigue, and subfebrile fever with or without muscular pain and arthralgia. Although the symptoms were not life-threatening, all of the patients suffered a prolonged duration of the disease until improvement...
2016: Intervirology
https://www.readbyqxmd.com/read/28081531/viral-nucleic-acids-in-the-serum-are-dependent-on-blood-sampling-site-in-patients-with-clinical-suspicion-of-myocarditis
#17
Agnieszka Pawlak, Maciej Przybylski, Marek Durlik, Katarzyna Gil, Anna M Nasierowska-Guttmejer, Katarzyna Byczkowska, Andrzej Ziemba, Robert J Gil
BACKGROUND: The meaning of viral nucleic acids in the myocardium in many cases is difficult for clinical interpretation, whereas the presence of viral nucleic acids in the serum is a marker of active infection. We determined the diagnostic value of viral nucleic acids in ventricular serum and peripheral serum samples in comparison with endomyocardial biopsy (EMB) specimens in patients with clinically suspected myocarditis. METHODS: The viral nucleic acid evaluation was performed in serum samples and EMB specimens by real-time PCR in 70 patients (age: 47 ± 16 years)...
2016: Intervirology
https://www.readbyqxmd.com/read/28081529/zika-virus-induced-microcephaly-and-its-possible-molecular-mechanism
#18
REVIEW
Md Imam Faizan, Mohd Abdullah, Sher Ali, Irshad H Naqvi, Anwar Ahmed, Shama Parveen
Zika virus is an arthropod-borne re-emerging pathogen associated with the global pandemic of 2015-2016. The devastating effect of Zika viral infection is reflected by its neurological manifestations such as microcephaly in newborns. This scenario evoked our interest to uncover the neurotropic localization, multiplication of the virus, and the mechanism of microcephaly. The present report provides an overview of a possible molecular mechanism of Zika virus-induced microcephaly based on recent publications. Transplacental transmission of Zika viral infection from mother to foetus during the first trimester of pregnancy results in propagation of the virus in human neural progenitor cells (hNPCs), where entry is facilitated by the receptor (AXL protein) leading to the alteration of signalling and immune pathways in host cells...
2016: Intervirology
https://www.readbyqxmd.com/read/28052265/transforming-activity-of-murine-herpesvirus-68-putative-growth-factor-is-related-to-the-ability-to-change-cytoskeletal-structure
#19
Veronika Lachová, Darina Svetlíková, František Golais, Miroslava Šupolíková, Lucia Turianová, Tatiana Betáková
Murine herpesvirus 68 (MHV-68) can transform cells in vitro and in vivo. We investigated putative murine herpesvirus growth factors (MHGFs) obtained by the separation of cell-free media from MHV-68-transformed cells on an FPLC Sephadex G15 column. The transforming activity of the MHGFA fraction was related to depolymerization of actin, disruption of the microtubule network, and punctate-reticular changes of the Golgi. The MHGFW fraction had only repressing activity on the transformed phenotype. Incubation of MRC-5 cells with MHGFW resulted in reticular changes of the Golgi apparatus, minor depolymerization of actin filaments, and no detectable changes of the microtubule network...
2016: Intervirology
https://www.readbyqxmd.com/read/27974715/hiv-drug-resistance-and-phylogeny-profile-in-na%C3%A3-ve-and-antiretroviral-experienced-patients-in-tehran-iran
#20
Molood Farrokhi, Samaneh Moallemi, Kazem Baesi, Sara Ahsani-Nasab, Mohammad Gholami, Leila Sadeghi, Minoo Mohraz
BACKGROUND: Increasing the accessibility of antiretroviral therapy (ART) has caused the emergence of drug resistance in patients receiving ART and in naïve patients. The aim of this study was to evaluate HIV subtype and drug resistance between naïve patients and ART-experienced patients. METHODS: Blood samples were collected from 78 antiretroviral and naïve HIV-1 patients; antiretroviral-resistant mutations and subtyping were then determined by sequencing pol regions...
2016: Intervirology
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