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Journal of Infectious Diseases

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https://www.readbyqxmd.com/read/27932622/inflammasome-activation-underlies-central-nervous-system-deterioration-in-hiv-associated-tuberculosis
#1
Suzaan Marais, Rachel P J Lai, Katalin A Wilkinson, Graeme Meintjes, Anne O'Garra, Robert J Wilkinson
Tuberculosis meningitis (TBM) is a frequent cause of meningitis in HIV-infected individuals, resulting in death in ~ 40% of affected patients. A severe complication of antiretroviral therapy (ART) in these patients is neurological TB-immune reconstitution inflammatory syndrome (IRIS), but its underlying cause remains poorly understood. To investigate the pathogenesis of TBM-IRIS, we performed longitudinal whole blood microarray analysis of HIV-infected TBM patients and reflected the findings at the protein level...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932621/treatment-associated-inflammatory-deterioration-in-tuberculous-meningitis-unpicking-the-paradox
#2
EDITORIAL
Nguyen Thuy Thuong Thuong, Guy E Thwaites
No abstract text is available yet for this article.
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932620/dissecting-antibodies-induced-by-a-chimeric-yellow-fever-dengue-live-attenuated-tetravalent-dengue-vaccine-cyd-tdv-in-na%C3%A3-ve-and-dengue-exposed-individuals
#3
Sandra Henein, Jesica Swanstrom, Anthony M Byers, Janice M Moser, S Farzana Shaik, Matthew Bonaparte, Nicholas Jackson, Bruno Guy, Ralph Baric, Aravinda M de Silva
Sanofi Pasteur has developed a chimeric yellow fever-dengue, live-attenuated, tetravalent dengue vaccine (CYD-TDV) that is currently approved for use in several countries. In clinical trials, CYD-TDV was efficacious at reducing laboratory-confirmed cases of dengue disease. Efficacy varied by dengue virus (DENV) serotype and pre-vaccination dengue immune status. We compared the properties of antibodies in naïve and DENV exposed individuals who received CYD-TDV. We depleted specific populations of DENV-reactive antibodies from immune sera to estimate the contribution of serotype-cross reactive and type-specific antibodies to neutralization...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932619/ontogeny-of-cd4-t-lymphocytes-with-phenotypic-susceptibility-to-hiv-1-during-exclusive-and-non-exclusive-breastfeeding-in-hiv-1-exposed-ugandan-infants
#4
Elizabeth J McFarland, Tina M Powell, Carolyne Onyango-Makumbi, Weiming Zhang, Kelsey Melander, Prossy Naluyima, Samuel Okurut, Michael A Eller, Mary Glenn Fowler, Edward N Janoff
BACKGROUND: Among HIV-1-exposed infants, mixed breastfeeding is associated with higher postnatal HIV-1 transmission than exclusive breastfeeding, but the mechanisms of this differential risk are uncertain. METHODS: HIV-1-exposed, Ugandan infants were prospectively assessed over the first year of life for feeding practices and T cell maturation, intestinal homing (β7(hi)), activation, and HIV-1 co-receptor (CCR5) expression in peripheral blood. Infants receiving only breast milk and those with introduction of other foods prior to 6 months, categorized as exclusive and non-exclusive, respectively...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932618/the-roles-of-unfolded-protein-response-pathways-in-chlamydia-pathogenesis
#5
Zenas George, Yusuf Omosun, Anthony A Azenabor, James Partin, Kahaliah Joseph, Debra Ellerson, Qing He, Francis Eko, Claudiu Bandea, Pavel Svoboda, Jan Pohl, Carolyn M Black, Joseph U Igietseme
Chlamydia is an obligate intracellular bacterium that relies on host cell for essential nutrients and ATP for a productive infection. Although the unfolded protein response (UPR) plays a major role in certain microbial infectivity, its role in chlamydial pathogenesis is unknown. We hypothesized that Chlamydia induces UPR and exploits it to upregulate host cell uptake and metabolism of glucose, production of ATP, phospholipids and other molecules required for its replicative development and host survival. Using a combination of biochemical and pathway inhibition assays, we showed that the three UPR pathway transducers: Protein kinase RNA-activated (PKR)-like ER kinase (PERK), Inositol-requiring enzyme-1α (IRE1α), and Activating transcription factor-6α (ATF6α) were activated during Chlamydia infection...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932617/reduced-trans-placental-transfer-of-group-b-streptococcus-surface-protein-antibodies-in-hiv-infected-mother-newborn-dyads
#6
Sonwabile Dzanibe, Peter V Adrian, Sheila Z Kimaro Mlacha, Ziyaad Dangor, Gaurav Kwatra, Shabir A Madhi
We evaluated the effect of maternal HIV infection on trans-placental antibody transfer specific to eight group B Streptococcus (GBS) surface protein among 81 HIV-uninfected and 83 HIV-infected mother-newborn pairs using a multiplex immunoassay. Significantly lower antibody titres were detected in HIV-infected mothers and HIV-exposed uninfected newborns compared to HIV-uninfected mother-newborn dyads. Maternal HIV infection was also associated with reduced trans-placental transfer of antibodies for Sip (25.8%), Foldase (30...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932616/modified-profile-of-matrix-metalloproteinase-2-and-9-production-by-human-fallopian-tube-epithelial-cells-following-infection-in-vitro-with-neisseria-gonorrhoeae
#7
Paula I Rodas, Doris Pérez, Claudia Jaffret, Yaquelin González, Carolina Carreño, Cecilia V Tapia, Eduardo Osorio, Luis A Velasquez, Myron Christodoulides
Epithelial shedding and scarring of Fallopian tube mucosa are the main consequences of sexually transmitted Neisseria gonorrhoeae infection and likely involves an imbalance of host extracellular matrix components (ECM) and their regulators such as matrix metalloproteinases (MMPs). In this brief report, primary human Fallopian tube epithelial cells were infected with N. gonorrhoeae and MMP patterns examined. Gonococcal infection induced a significant increase in secreted MMP-9 and an accumulation of cytoplasmic MMP-2 over time, but no significant MMP-3 or MMP-8 production was observed...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932615/anopheles-salivary-biomarker-to-assess-malaria-transmission-risk-along-the-thailand-myanmar-border
#8
Phubeth Ya-Umphan, Dominique Cerqueira, Daniel M Parker, Gilles Cottrell, Anne Poinsignon, Franck Remoue, Cecile Brengues, Theeraphap Chareonviriyaphap, Francois Nosten, Vincent Corbel
BACKGROUND: The modalities of malaria transmission along the Thailand-Myanmar border are poorly understood. Here we address the relevance of using a specific Anopheles salivary biomarker to measure the risk of human exposure to anopheles bites. METHODS: Serologic surveys were conducted from May 2013 to December 2014 in 4 sentinel villages. Dried blood spots (n>9,400) were collected in filter papers among all inhabitants at baseline and then every three months up to 18 months...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932614/validation-of-the-cepheid-genexpert-for-detecting-ebola-virus-in-semen
#9
Amy James Loftis, Saturday Quellie, Kelly Chason, Emmanuel Sumo, Mason Toukolon, Yonnie Otieno, Heinzfried Ellerbrok, Marcia M Hobbs, David Hoover, Karine Dube, David A Wohl, William A Fischer
BACKGROUND: Ebola virus (EBOV) RNA persistence in semen, reported sexual transmission, and sporadic clusters at the end of the 2013-2016 epidemic have prompted recommendations that male survivors refrain from unprotected sex unless their semen is confirmed to be EBOV-free. However, there is no fully validated assay for EBOV detection in fluids other than blood. METHODS: The Cepheid Xpert Ebola assay for EBOV RNA detection was validated for whole semen and blood using samples obtained from uninfected donors and spiked with inactivated EBOV...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932613/type-1-reaction-in-leprosy-patients-corresponds-with-a-decrease-in-pro-resolving-and-an-increase-in-pro-inflammatory-lipid-mediators
#10
Carlos A M Silva, Kristofor Webb, Barbara G Andre, Maria Angela de Mello Marques, Fernanda Marques de Carvalho, Cristiana Santos de Macedo, Roberta Olmo Pinheiro, Euzenir Nunes Sarno, Maria Cristina Vidal Pessolani, John T Belisle
BACKGROUND: Type 1 reaction (T1R) is an acute Th1 inflammatory episode in leprosy patients. While immunological responses associated with T1R have been investigated, the corresponding metabolic responses that could contribute to T1R pathology have received little attention. METHODS: Metabolomics-based analyses of sera from T1R (n=7) and T1R-free (n=9) patients were conducted via liquid chromatography-mass spectrometry (LC-MS). Serum metabolites that significantly differed (p<0...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932612/legionella-longbeachae-is-immunologically-silent-and-highly-virulent-in-vivo
#11
Liliana M Massis, Mariana A Assis-Marques, Fernanda V S Castanheira, Yasmin J Capobianco, Andiamira C Balestra, Pedro Escoll, Rebecca E Wood, Graziele Z Manin, Vani M A Correa, José C Alves-Filho, Fernando Q Cunha, Carmen Buchrieser, Marcos C Borges, Hayley J Newton, Dario S Zamboni
BACKGROUND: Legionella longbeachae (Llo) and Legionella pneumophila (Lpn) are the most common pneumonia-causing agents of the genus. Although both species can be lethal to humans and are highly prevalent, little is known about the molecular pathogenesis of Llo infections. In murine models of infection, Lpn infection is self-limited whereas Llo infection is lethal. DESIGN/METHODS: We used mouse macrophages, human macrophages, human epithelial cells and mouse infections in vivo to evaluate multiple parameters of the infection...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932611/kaposi-s-sarcoma-associated-herpesvirus-infection-of-neurons-in-hiv-positive-patients
#12
For Yue Tso, Ashley Sawyer, Eun Hee Kwon, Victor Mudenda, Dianne Langford, You Zhou, John West, Charles Wood
BACKGROUND: Kaposi's sarcoma-associated herpesvirus (KSHV) is the causative agent of Kaposi's sarcoma (KS), one of the leading cancers in HIV patients in Zambia. KSHV was detected in the human central nervous system (CNS) by PCR, but tissue location and cell tropism for KSHV infection has not been established. Given the neurotropism exhibited by other herpesviruses and the frequent coinfection of HIV positive individuals with KSHV, we sought to determine whether the CNS can be infected by KSHV in HIV positive Zambian individuals...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932610/statins-influenza-vaccination-and-influenza
#13
LETTER
David S Fedson
No abstract text is available yet for this article.
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932609/completing-polio-eradication-the-case-for-antiviral-drugs
#14
EDITORIAL
Roland W Sutter, John F Modlin, Michel Zaffran
No abstract text is available yet for this article.
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932608/antiviral-activity-of-pocapavir-in-a-randomized-blinded-placebo-controlled-human-oral-poliovirus-vaccine-challenge-model
#15
Marc S Collett, Jeffrey R Hincks, Kimberley Benschop, Erwin Duizer, Harrie van der Avoort, Eric Rhoden, Hongmei Liu, M Steven Oberste, Mark A McKinlay, Marianne Hartford
BACKGROUND: Immunodeficient individuals who excrete vaccine-derived polioviruses threaten polio eradication. Antivirals address this threat. METHODS: In a randomized, blinded, placebo-controlled study, adults were challenged with oral poliovirus vaccine type 1 (mOPV1) and subsequently treated with capsid inhibitor pocapavir or placebo. Time to virus negativity in stool was determined. RESULTS: 144 participants were enrolled; 98% became infected upon OPV challenge...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27837008/transcriptional-categorization-of-the-etiology-of-pneumonia-syndrome-in-pediatric-patients-in-malaria-endemic-areas
#16
Jacob Silterra, Michael A Gillette, Miguel Lanaspa, Karell G Pellé, Clarissa Valim, Rushdy Ahmad, Sozinho Acácio, Katherine D Almendinger, Yan Tan, Lola Madrid, Pedro L Alonso, Steven A Carr, Roger C Wiegand, Quique Bassat, Jill P Mesirov, Danny A Milner, Dyann F Wirth
BACKGROUND:  Pediatric acute respiratory distress in tropical settings is very common. Bacterial pneumonia is a major contributor to morbidity and mortality and requires adequate diagnosis for correct treatment. A rapid test that could identify bacterial (vs. other) infections would have great clinical utility. METHODS AND FINDINGS:  We performed RNA-Seq and analyzed the transcriptomes of 68 pediatric patients with well-characterized clinical phenotype to identify transcriptional features associated with each disease class...
November 10, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27815385/the-shifting-paradigm-of-care-for-adults-living-with-hiv-smoking-cessation-for-longer-life
#17
EDITORIAL
Keri N Althoff
No abstract text is available yet for this article.
November 3, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27815384/impact-of-cigarette-smoking-and-smoking-cessation-on-life-expectancy-among-people-with-hiv-a-us-based-modeling-study
#18
Krishna P Reddy, Robert A Parker, Elena Losina, Travis P Baggett, A David Paltiel, Nancy A Rigotti, Milton C Weinstein, Kenneth A Freedberg, Rochelle P Walensky
BACKGROUND:  In the United States, >40% of people infected with human immunodeficiency virus (HIV) smoke cigarettes. METHODS:  We used a computer simulation of HIV disease and treatment to project the life expectancy of HIV-infected persons, based on smoking status. We used age- and sex-specific data on mortality, stratified by smoking status. The ratio of the non-AIDS-related mortality risk for current smokers versus that for never smokers was 2.8, and the ratio for former smokers versus never smokers was 1...
November 3, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27815383/persistence-of-wild-type-japanese-encephalitis-virus-strains-cross-neutralization-five-years-following-je-cv-immunization
#19
Emmanuel Feroldi, Mark Boaz, Sutee Yoksan, Kulkanya Chokephaibulkit, Usa Thisyakorn, Chitsanu Pancharoen, Céline Monfredo, Alain Bouckenooghe
BACKGROUND:  The live-attenuated Japanese encephalitis (JE) vaccine (JE-CV; IMOJEV(®)) induces a protective response in children. A shift in circulating JE virus strains suggests that a genotype shift phenomenon may occur throughout South-East Asia. We assessed the neutralization of wild-type (WT) JE virus isolates at distal time points post-vaccination. METHODS:  We analysed serum samples from a subset of 47 children who had received a JE-CV booster after an inactivated JE vaccine primary immunization...
November 3, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27815382/therapeutic-treatment-with-sphingosine-1-phosphate-receptor-1-ligands-reduces-pertussis-inflammatory-pathology-by-a-pertussis-toxin-insensitive-mechanism
#20
Ciaran Skerry, Karen Scanlon, Jeremy Ardanuy, Drew Roberts, Li Zhang, Hugh Rosen, Nicholas H Carbonetti
Recent data have demonstrated the potential of sphingosine-1-phosphate receptor (S1PR) agonism in the treatment of infectious diseases. Previously we used a murine model of Bordetella pertussis infection to demonstrate that treatment with the S1PR agonist AAL-R reduces pulmonary inflammation during infection. Here we show that this effect is mediated via the S1PR1 receptor on LysM+ (myeloid) cells. Signaling via this receptor results in reduced lung inflammation and cellular recruitment as well as reduced morbidity and mortality in a neonatal mouse model of disease...
November 3, 2016: Journal of Infectious Diseases
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