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https://www.readbyqxmd.com/read/29774014/oral-microbiota-community-dynamics-associated-with-oral-squamous-cell-carcinoma-staging
#1
Chia-Yu Yang, Yuan-Ming Yeh, Hai-Ying Yu, Chia-Yin Chin, Chia-Wei Hsu, Hsuan Liu, Po-Jung Huang, Song-Nian Hu, Chun-Ta Liao, Kai-Ping Chang, Yu-Liang Chang
Oral squamous cell carcinoma (OSCC) is a highly aggressive cancer and the fourth leading malignancy among males in Taiwan. Some pathogenic bacteria are associated with periodontitis and oral cancer. However, the comprehensive profile of the oral microbiome during the cancer's progression from the early stage to the late stage is still unclear. We profiled the oral microbiota and identified bacteria biomarkers associated with OSCC. The microbiota of an oral rinse from 51 healthy individuals and 197 OSCC patients at different stages were investigated using 16S rRNA V3V4 amplicon sequencing, followed by bioinformatics and statistical analyses...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29771962/progression-of-the-radiologic-severity-index-predicts-mortality-in-patients-with-parainfluenza-virus-associated-lower-respiratory-infections
#2
Ajay Sheshadri, Dimpy P Shah, Myrna Godoy, Jeremy J Erasmus, Juhee Song, Liang Li, Scott E Evans, Roy F Chemaly, Burton F Dickey, David E Ost
BACKGROUND: Radiologic severity may predict adverse outcomes after lower respiratory tract infection (LRI). However, few studies have quantified radiologic severity of LRIs. We sought to evaluate whether a semi-quantitative scoring tool, the Radiologic Severity Index (RSI), predicted mortality after parainfluenza virus (PIV)-associated LRI. METHODS: We conducted a retrospective review of consecutively-enrolled adult patients with hematologic malignancy or hematopoietic stem cell transplantation and with PIV detected in nasal wash who subsequently developed radiologically-confirmed LRI...
2018: PloS One
https://www.readbyqxmd.com/read/29750672/infusion-of-cytotoxic-t-lymphocytes-for-the-treatment-of-viral-infections-in-hematopoetic-stem-cell-transplant-patients
#3
Katherine A Baugh, Ifigeneia Tzannou, Ann M Leen
PURPOSE OF REVIEW: Allogeneic hematopoietic stem cell transplantation has proven curative for a range of malignant and nonmalignant disorders. However, the clinical success of this therapy is marred by the morbidity associated with viral infections, which are frequent (cytomegalovirus 15.6-28%, adenovirus 3-21%, BK virus 18.5-20.7%) post-transplant. These infections occur as a consequence of transplant conditioning regimens designed to eliminate not only malignant cells but also host immune cells that might interfere with stem cell engraftment...
May 9, 2018: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/29717150/clinical-and-molecular-epidemiology-of-human-parainfluenza-viruses-1-4-in-children-from-viet-nam
#4
Martin Linster, Lien Anh Ha Do, Ngo Ngoc Quang Minh, Yihui Chen, Zhu Zhe, Tran Anh Tuan, Ha Manh Tuan, Yvonne C F Su, H Rogier van Doorn, Mahesh Moorthy, Gavin J D Smith
HPIVs are serologically and genetically grouped into four species that account for up to 10% of all hospitalizations due to acute respiratory infection in children under the age of five. Genetic and epidemiological data for the four HPIVs derived from two pediatric cohorts in Viet Nam are presented. Respiratory samples were screened for HPIV1-4 by real-time PCR. Demographic and clinical data of patients infected with different HPIV were compared. We used a hemi-nested PCR approach to generate viral genome sequences from HPIV-positive samples and conducted a comprehensive phylogenetic analysis...
May 1, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29693588/relative-contribution-of-cellular-complement-inhibitors-cd59-cd46-and-cd55-to-parainfluenza-virus-5-inhibition-of-complement-mediated-neutralization
#5
Yujia Li, Griffith D Parks
The complement system is a part of the innate immune system that viruses need to face during infections. Many viruses incorporate cellular regulators of complement activation (RCA) to block complement pathways and our prior work has shown that Parainfluenza virus 5 (PIV5) incorporates CD55 and CD46 to delay complement-mediated neutralization. In this paper, we tested the role of a third individual RCA inhibitor CD59 in PIV5 interactions with complement pathways. Using a cell line engineered to express CD59, we show that small levels of functional CD59 are associated with progeny PIV5, which is capable of blocking assembly of the C5b-C9 membrane attack complex (MAC)...
April 25, 2018: Viruses
https://www.readbyqxmd.com/read/29693380/structural-insights-into-human-parainfluenza-virus-type-3-haemagglutinin-neuraminidase-using-unsaturated-3-n-substituted-sialic-acids-as-probes
#6
Mauro Pascolutti, Larissa Dirr, Patrice Guillon, Annelies Van Den Bergh, Thomas Ve, Robin J Thomson, Mark von Itzstein
A novel approach to human parainfluenza virus type-3 (hPIV-3) inhibitor design has been evaluated by targeting an unexplored pocket within the active site region of the virus' haemagglutinin-neuraminidase (HN) that is normally occluded upon ligand engagement. To explore this opportunity, we developed a highly efficient route to introduce nitrogen-based functionalities at the naturally unsubstituted C-3 position on the neuraminidase inhibitor template N-acyl-2,3-dehydro-2-deoxy-neuraminic acid (N-acyl-Neu2en), via a regioselective 2,3-bromoazidation...
April 25, 2018: ACS Chemical Biology
https://www.readbyqxmd.com/read/29686673/the-cd8-t-cell-response-to-respiratory-virus-infections
#7
REVIEW
Megan E Schmidt, Steven M Varga
Humans are highly susceptible to infection with respiratory viruses including respiratory syncytial virus (RSV), influenza virus, human metapneumovirus, rhinovirus, coronavirus, and parainfluenza virus. While some viruses simply cause symptoms of the common cold, many respiratory viruses induce severe bronchiolitis, pneumonia, and even death following infection. Despite the immense clinical burden, the majority of the most common pulmonary viruses lack long-lasting efficacious vaccines. Nearly all current vaccination strategies are designed to elicit broadly neutralizing antibodies, which prevent severe disease following a subsequent infection...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29675651/a-multiplex-pcr-method-for-the-simultaneous-detection-of-three-viruses-associated-with-canine-viral-enteric-infections
#8
Xiaoyu Deng, Jiali Zhang, Jiazi Su, Hao Liu, Yanlong Cong, Lei Zhang, Kemeng Zhang, Ning Shi, Rongguang Lu, Xijun Yan
The aim of this study was to establish a multiplex PCR (mPCR) method that can simultaneously detect canine parvovirus (CPV-2), canine coronavirus (CCoV) and canine adenovirus (CAV), thereby eliminating the need to detect these pathogens individually. Based on conserved regions in the genomes of these three viruses, the VP2 gene of CPV-2, the endoribonuclease nsp15 gene of CCoV, and the 52K gene of CAV were selected for primer design. The specificity of the mPCR results showed no amplification of canine distemper virus (CDV), canine parainfluenza virus (CPIV), or pseudorabies virus (PRV), indicating that the method had good specificity...
April 19, 2018: Archives of Virology
https://www.readbyqxmd.com/read/29673810/a-systematic-review-of-emerging-respiratory-viruses-at-the-hajj-and-possible-coinfection-with-streptococcus-pneumoniae
#9
REVIEW
Jaffar A Al-Tawfiq, Samir Benkouiten, Ziad A Memish
BACKGROUND: The annual Hajj to the Kingdom of Saudi Arabia attracts millions of pilgrims from around the world. International health community's attention goes towards this mass gathering and the possibility of the development of any respiratory tract infections due to the high risk of acquisition of respiratory viruses. METHOD: We searched MEDLINE/PubMed and Scopus databases for relevant papers describing the prevalence of respiratory viruses among Hajj pilgrims...
April 16, 2018: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/29672244/seroprevalence-of-human-parainfluenza-virus-types-1-4-among-healthy-children-under-5-years-of-age-in-korea
#10
Geunha Park, Joo Young Lee, Soo Young Lee, Jong-Hyun Kim, Jin Han Kang, Ui Yoon Choi
Human parainfluenza viruses (HPIVs) are among the major causes of respiratory infections in children, worldwide, including in Korea. There are four types of HPIVs, each with different epidemiological characteristics. HPIV3 is the most frequently circulating HPIV type, while the epidemiology of HPIV4 remains unclear. The aim of this study was to investigate the age-stratified seropositivity rates of HPIV types 1-4 among children in Korea. These data will be useful to determine vaccine requirements. This study included 245 participants categorized into four age groups: 6-11 months, 1 year, 2 years, and 3-5 years...
April 19, 2018: Viral Immunology
https://www.readbyqxmd.com/read/29669883/impact-of-long-term-erythromycin-therapy-on-the-oropharyngeal-microbiome-and-resistance-gene-reservoir-in-non-cystic-fibrosis-bronchiectasis
#11
Jocelyn M Choo, Guy C J Abell, Rachel Thomson, Lucy Morgan, Grant Waterer, David L Gordon, Steven L Taylor, Lex E X Leong, Steve L Wesselingh, Lucy D Burr, Geraint B Rogers
Long-term macrolide therapy reduces rates of pulmonary exacerbation in bronchiectasis. However, little is known about the potential for macrolide therapy to alter the composition and function of the oropharyngeal commensal microbiota or to increase the carriage of transmissible antimicrobial resistance. We assessed the effect of long-term erythromycin on oropharyngeal microbiota composition and the carriage of transmissible macrolide resistance genes in 84 adults with bronchiectasis, enrolled in the Bronchiectasis and Low-dose Erythromycin Study (BLESS) 48-week placebo-controlled trial of twice-daily erythromycin ethylsuccinate (400 mg)...
April 25, 2018: MSphere
https://www.readbyqxmd.com/read/29666961/a-novel-sampling-method-to-detect-airborne-influenza-and-other-respiratory-viruses-in-mechanically-ventilated-patients-a-feasibility-study
#12
Alicia B Mitchell, Benjamin Tang, Maryam Shojaei, Lachlan S Barnes, Marek Nalos, Brian G Oliver, Anthony S McLean
BACKGROUND: Respiratory viruses circulate constantly in the ambient air. The risk of opportunistic infection from these viruses can be increased in mechanically ventilated patients. The present study evaluates the feasibility of detecting airborne respiratory viruses in mechanically ventilated patients using a novel sample collection method involving ventilator filters. METHODS: We collected inspiratory and expiratory filters from the ventilator circuits of mechanically ventilated patients in an intensive care unit over a 14-month period...
April 17, 2018: Annals of Intensive Care
https://www.readbyqxmd.com/read/29663437/usefulness-of-national-respiratory-virus-surveillance-data-for-clinicians-who-manage-adult-patients
#13
Eun Been Cho, Seong-Ho Choi, Jin-Won Chung, Mi-Kyung Lee
The Korean Centers for Disease Control and Prevention (KCDC) provides weekly respiratory virus (RV) surveillance reports on its website (the KCDC data). Clinicians in clinical settings wherein the use of PCR for RVs is not a routine laboratory test for adult patients with acute respiratory illness (ARI) may question the clinical utility of such a national RV surveillance dataset in predicting RV outbreaks among their adult patients. We compared the KCDC data to the RV PCR data of adult patients who visited a tertiary care center...
April 16, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29651410/analysis-of-micrornas-expression-profiles-in-madin-darby-bovine-kidney-cells-infected-with-caprine-parainfluenza-virus-type-3
#14
Jizong Li, Li Mao, Wenliang Li, Fei Hao, Chunyan Zhong, Xing Zhu, Xinqin Ji, Leilei Yang, Wenwen Zhang, Maojun Liu, Jieyuan Jiang
Caprine parainfluenza virus type 3 (CPIV3) is a newly emerging pathogenic respiratory agent infecting both young and adult goats, and it was identified in eastern China in 2013. Cellular microRNAs (miRNAs) have been reported to be important modulators of the intricate virus-host interactions. In order to elucidate the role of miRNAs in madin-darby bovine kidney (MDBK) cells during CPIV3 infection. In this study, we performed high-throughput sequencing technology to analyze small RNA libraries in CPIV3-infected and mock-infected MDBK cells...
2018: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29644701/usefulness-of-national-respiratory-virus-surveillance-data-for-clinicians-who-manage-adult-patients
#15
Eun Been Cho, Seong-Ho Choi, Jin-Won Chung, Mi-Kyung Lee
The Korean Centers for Disease Control and Prevention (KCDC) provides weekly respiratory virus (RV) surveillance reports on its website (the KCDC data). Clinicians in clinical settings wherein the use of PCR for RVs is not a routine laboratory test for adult patients with acute respiratory illness (ARI) may question the clinical utility of such a national RV surveillance dataset in predicting RV outbreaks among their adult patients. We compared the KCDC data to the RV PCR data of adult patients who visited a tertiary care center...
April 12, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29643500/impact-of-a-vegan-diet-on-the-human-salivary-microbiota
#16
Tue H Hansen, Timo Kern, Emilie G Bak, Alireza Kashani, Kristine H Allin, Trine Nielsen, Torben Hansen, Oluf Pedersen
Little is known about the effect of long-term diet patterns on the composition and functional potential of the human salivary microbiota. In the present study, we sought to contribute to the ongoing elucidation of dietary effects on the oral microbial community by examining the diversity, composition and functional potential of the salivary microbiota in 160 healthy vegans and omnivores using 16S rRNA gene amplicon sequencing. We further sought to identify bacterial taxa in saliva associated with host inflammatory markers...
April 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29621258/diva-metabolomics-differentiating-vaccination-status-following-viral-challenge-using-metabolomic-profiles
#17
Darren W Gray, Michael D Welsh, Fawad Mansoor, Simon Doherty, Olivier P Chevallier, Christopher T Elliott, Mark H Mooney
Bovine Respiratory Disease (BRD) is a major source of economic loss within the agricultural industry. Vaccination against BRD-associated viruses does not offer complete immune protection and vaccine failure animals present potential routes for disease spread. Serological differentiation of infected from vaccinated animals (DIVA) is possible using antigen-deleted vaccines, but during virus outbreaks DIVA responses are masked by wild-type virus preventing accurate serodiagnosis. Previous work by the authors has established the potential for metabolomic profiling to reveal metabolites associated with systemic immune responses to vaccination...
2018: PloS One
https://www.readbyqxmd.com/read/29620934/factors-associated-with-lower-respiratory-tract-infections-in-hiv-exposed-uninfected-infants
#18
Adriana Weinberg, Marisa Mussi-Pinhata, Qilu Yu, Rachel A Cohen, Volia C Almeida, Fabiana R Amaral, Laura Freimanis, D Robert Harris, Christiana Smith, George Siberry
OBJECTIVES: To identify factors that predispose HIV-exposed uninfected infants (HEUs) to higher incidence of severe infections, hospitalization and death in the first 6 to 24 months of life compared with HEUs with and without lower respiratory tract infection (LRTI) in the first 6 months of life. DESIGN: Nested case-control study of 107 LRTI+ infants enrolled in the NISDI Perinatal and LILAC studies with and 140 LRTI- in the first 6 months of, matched by date and place of birth...
March 18, 2018: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/29617951/non-mumps-viral-parotitis-during-the-2014-2015-influenza-season-in-the-united-states
#19
Lina I Elbadawi, Pamela Talley, Melissa A Rolfes, Alexander J Millman, Erik Reisdorf, Natalie A Kramer, John R Barnes, Lenee Blanton, Jaime Christensen, Stefanie Cole, Tonya Danz, John J Dreisig, Rebecca Garten, Thomas Haupt, Beth M Isaac, Mary Anne Jackson, Anna Kocharian, Daniel Leifer, Karen Martin, Lisa McHugh, Rebecca J McNall, Jennifer Palm, Kay W Radford, Sara Robinson, Jennifer B Rosen, Senthilkumar K Sakthivel, Peter Shult, Anna K Strain, George Turabelidze, Lori A Webber, Meghan Pearce Weinberg, David E Wentworth, Brett L Whitaker, Lyn Finelli, Michael A Jhung, Ruth Lynfield, Jeffrey P Davis
Background: During the 2014-2015 US influenza season, 320 cases of non-mumps parotitis (NMP) among residents of 21 states were reported to the Centers for Disease Control and Prevention (CDC). We conducted an epidemiologic and laboratory investigation to determine viral etiologies and clinical features of NMP during this unusually large occurrence. Methods: NMP was defined as acute parotitis or other salivary gland swelling of >2 days duration in a person with a mumps- negative laboratory result...
March 30, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29601894/susceptibility-of-paramyxoviruses-and-filoviruses-to-inhibition-by-2-monofluoro-and-2-difluoro-4-azidocytidine-analogs
#20
Michael K Lo, Paul C Jordan, Sarah Stevens, Yuen Tam, Jerome Deval, Stuart T Nichol, Christina F Spiropoulou
Ebolaviruses, marburgviruses, and henipaviruses are zoonotic pathogens belonging to the Filoviridae and Paramyxoviridae families. They exemplify viruses that continue to spill over into the human population, causing outbreaks characterized by high mortality and significant clinical sequelae in survivors of infection. There are currently no approved small molecule therapeutics for use in humans against these viruses. In this study, we evaluated the antiviral activity of the nucleoside analog 4'-azidocytidine (4'N3 -C, R1479) and its 2'-monofluoro- and 2'-difluoro-modified analogs (2'F-4'N3 -C and 2'diF-4'N3 -C) against representative paramyxoviruses (Nipah virus, Hendra virus, measles virus, and human parainfluenza virus 3) and filoviruses (Ebola virus, Sudan virus, and Ravn virus)...
March 27, 2018: Antiviral Research
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