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Journal of Infectious Diseases

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https://www.readbyqxmd.com/read/28329061/pegylated-interferon-alfa-2b-add-on-treatment-in-hepatitis-b-virus-envelope-antigen-positive-chronic-hepatitis-b-patients-treated-with-nucleos-t-ide-analogue-a-randomized-controlled-trial-pegon
#1
Heng Chi, Bettina E Hansen, Simin Guo, Ning Ping Zhang, Xun Qi, Liang Chen, Qing Guo, Pauline Arends, Ji-Yao Wang, Elke Verhey, Robert J de Knegt, Qing Xie, Harry L A Janssen
Background.: We studied whether 48 weeks of pegylated interferon alfa-2b (peginterferon) add-on therapy increases serological response in hepatitis B virus (HBV) envelope antigen (HBeAg)-positive patients receiving nucleos(t)ide analogue (NA) therapy, compared with continued NA monotherapy. Methods.: This randomized trial included HBeAg-positive patients with compensated liver disease who were treated with entecavir/tenofovir for >12 months and had an HBV DNA load of <2000 IU/mL...
March 17, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329145/higher-prevalence-of-frailty-among-a-sample-of-hiv-infected-middle-aged-and-older-chinese-adults-is-associated-with-neurocognitive-impairment-and-depressive-symptoms
#2
Yingying Ding, Haijiang Lin, Xing Liu, Frank Y Wong, Yan V Sun, Vincent C Marconi, Na He
We investigated the prevalence and correlates of prefrailty/frailty, determined on the basis of the Fried criteria, in Chinese patients with and those without human immunodeficiency virus (HIV) infection. HIV-infected patients were more likely to be frail or prefrail than controls, and this association remained significant after adjustment for potential confounders (odds ratio, 3.79). After additional adjustment for neurocognitive impairment and depressive and insomnia symptoms, this association remained significant but attenuated (odds ratio, 2...
March 16, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329351/hepatitis-a-outbreak-among-men-who-have-sex-with-men-in-a-country-of-low-endemicity-of-hepatitis-a-infection
#3
Guan-Jhou Chen, Kuan-Yin Lin, Chien-Ching Hung, Shan-Chwen Chang
No abstract text is available yet for this article.
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329245/hepatitis-e-virus-associated-neurological-injury-in-china
#4
Lin Wang, Jiexi Wen, Feng Gao, Hongjun Hao, Ling Wang
No abstract text is available yet for this article.
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329160/maternal-microchimerism-predicts-increased-infection-but-decreased-disease-due-to-p-falciparum-during-early-childhood
#5
Whitney E Harrington, Sami B Kanaan, Atis Muehlenbachs, Robert Morrison, Philip Stevenson, Michal Fried, Patrick E Duffy, J Lee Nelson
BACKGROUND: A mother's infection with placental malaria (PM) can affect her child's susceptibility to malaria, although the mechanism remains unclear. The fetus acquires a small amount of maternal cells and DNA known as maternal microchimerism (MMc), and we hypothesized that PM increases MMc and that MMc alters risk of P. falciparum malaria during infancy. METHODS: In a nested cohort from Muheza, Tanzania, we evaluated the presence and level of cord blood MMc in offspring of women with and without PM...
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329038/reply-to-wang-et-al
#6
Xinying Zhou, Harry R Dalton, Maikel P Peppelenbosch, Qiuwei Pan
No abstract text is available yet for this article.
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329334/turquoise-i-part-1b-ombitasvir-paritaprevir-ritonavir-and-dasabuvir-with-ribavirin-for-hepatitis-c-virus-infection-in-hiv-1-coinfected-patients-on-darunavir
#7
David Wyles, Michael Saag, Rolando M Viani, Jacob Lalezari, Oluwatoyin Adeyemi, Laveeza Bhatti, Amit Khatri, Jennifer R King, Yiran B Hu, Roger Trinh, Nancy S Shulman, Peter Ruane
Background.: Ombitasvir/paritaprevir/ritonavir with dasabuvir (OBV/PTV/r + DSV) ± ribavirin (RBV) is approved for hepatitis C virus (HCV) genotype 1 (GT1) treatment in HIV-1 coinfected patients. In healthy controls, coadministration of OBV/PTV/r + DSV + darunavir (DRV) lowered DRV trough concentration (Ctrough) levels. To assess the clinical significance of this change, TURQUOISE-I, Part 1b, evaluated the efficacy and safety of OBV/PTV/r + DSV + RBV in coinfected patients on stable, DRV-containing antiretroviral therapy (ART)...
March 14, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329329/increased-transmissibility-of-leishmania-donovani-from-the-mammalian-host-to-vector-sand-flies-after-multiple-exposures-to-sand-fly-bites
#8
Joanna G Valverde, Andrea Paun, Ehud Inbar, Audrey Romano, Michael Lewis, Kashinath Ghosh, David Sacks
Background: Patients with active visceral leishmaniasis are important reservoirs in the anthroponotic transmission cycle of Leishmania donovani. The role of the blood or skin as a source of infection to sand flies remains unclear, and the possible effect of multiple exposures to fly bites on transmissibility has not been addressed. Methods: L. donovani infected hamsters were exposed to xenodiagnoses with Lutzomyia longipalpis on the same or different sites on the abdomen on two consecutive days, or by artificial feeding on the skin or blood...
March 9, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329127/listeria-monocytogenes-cadc-regulates-cadmium-efflux-and-fine-tunes-lipoprotein-localization-to-escape-the-host-immune-response-and-promote-infection
#9
Rita Pombinho, Ana Camejo, Ana Vieira, Olga Reis, Filipe Carvalho, Maria Teresa Almeida, Jorge Campos Pinheiro, Sandra Sousa, Didier Cabanes
Listeria monocytogenes (Lm) is a major intracellular human foodborne bacterial pathogen. We previously revealed Lm-cadC as highly expressed during mouse infection. Here we show that Lm-CadC is a sequence-specific, DNA-binding and cadmium-dependent regulator of CadA, an efflux pump conferring cadmium resistance. CadC, but not CadA, is required for Lm infection in vivo. Interestingly, CadC also directly represses lspB, a gene encoding a lipoprotein signal peptidase whose expression appears detrimental for infection...
March 9, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329034/use-of-pfhrp2-only-rdts-rapidly-select-for-pfhrp2-negative-parasites-with-serious-implications-for-malaria-case-management-and-control
#10
Michelle L Gatton, Jessica Dunn, Alisha Chaudhry, Sadmir Ciketic, Jane Cunningham, Qin Cheng
Background: Rapid diagnostic tests (RDTs) are an important tool for malaria diagnosis, with most utilising antibodies against histidine-rich protein 2 (PfHRP2). Reports of Plasmodium falciparum lacking this protein are increasing, creating a problem for diagnosis of falciparum malaria in locations without quality microscopy. Methods: An agent-based stochastic simulation model of P.falciparum transmission was used to investigate the selective pressure exerted on parasite populations by use of RDTs for diagnosis of symptomatic cases...
March 8, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329302/sensitization-of-gram-negative-bacilli-to-host-antibacterial-proteins
#11
Joanna Jammal, Fadia Zaknoon, Galoz Kaneti, Ayelet S Hershkovits, Amram Mor
Towards addressing the need for novel alternatives to antibiotics, we attempted to sensitize Gram-negative bacilli (GNB) to innate antibacterial protagonists. We report a lipopeptide-like sequence (C10OOc12O) that inflicted outer-membrane damages at low micromolar range, whereas measurable bacterial growth inhibition in broth medium required >10-fold higher concentrations. In serum however, C10OOc12O induced antibacterial activity in a manner suppressible by anti-complements antibodies or heat treatment, and acted synergistically with exogenous lysozyme in broth and serum media...
March 4, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329303/high-burden-of-antimicrobial-resistance-and-mortality-among-adults-and-children-with-community-onset-bacterial-infections-in-india
#12
Vidya Mave, Ajay Chandanwale, Anju Kagal, Sandhya Khadse, Dileep Kadam, Renu Bharadwaj, Vaishali Dohe, Matthew Robinson, Aarti Kinikar, Samir Joshi, Priyanka Raichur, Katie McIntire, Savita Kanade, Jonathan Sachs, Chhaya Valvi, Usha Balasubramanian, Vandana Kulkarni, Aaron M Milstone, Ivan Marbaniang, Jonathan Zenilman, Amita Gupta
Background.: In India, antimicrobial consumption is high, yet systematically collected data on the epidemiology, risk factors and outcomes of antimicrobial resistant (AMR) infections are limited. Methods.: A prospective study of adults and children hospitalized for acute febrile illness (AFI) was conducted between August 2013 and December 2015. In-hospital outcomes were recorded, and logistic regression was performed to identify independent predictors of AMR community-onset infections...
March 3, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329187/bumped-kinase-inhibitors-for-therapy-of-cryptosporidiosis
#13
Matthew A Hulverson, Sumiti Vinayak, Ryan Choi, Deborah A Schaefer, Alejandro Castellanos-Gonzalez, Rama S R Vidadala, Carrie F Brooks, Gillian T Herbert, Dana P Betzer, Grant R Whitman, Hayley N Sparks, Samuel L M Arnold, Kasey L Rivas, Lynn K Barrett, A Clinton White, Maly Dustin J, Michael W Riggs, Boris Striepen, Wesley C Van Voorhis, Kayode K Ojo
Bumped kinase inhibitors (BKIs) of Cryptosporidium parvum calcium-dependent protein kinase 1 (CpCDPK1) are leading candidates for treatment of cryptosporidiosis diarrhea. Potential cardiotoxicity related to anti-human ether-à-go-go potassium channel (hERG) activity of the first generation anti-Cryptosporidium BKIs triggered further testing for efficacy. A luminescence assay adapted for high-throughput screening was used to measure inhibitory activities of BKIs on in vitro C. parvum. Furthermore, neonatal and interferon-γ knockout mouse models of C...
March 3, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329141/frequent-spread-of-plasmodium-vivax-malaria-maintains-high-genetic-diversity-at-the-myanmar-china-border-without-distance-and-landscape-barriers
#14
Eugenia Lo, Nancy Lam, Elizabeth Hemming-Schroeder, Jennifer Nguyen, Guofa Zhou, Ming-Chieh Lee, Zhaoqing Yang, Liwang Cui, Guiyun Yan
Background.: In Myanmar, civil unrest and the establishment of internally displaced persons (IDP) settlements along the Myanmar-China border have impacted malaria transmission. Methods.: Microsatellite markers were used to examine source-sink dynamics for Plasmodium vivax between IDP and surrounding villages in the border region. Genotypic structure and diversity were compared across the three years following the establishment of IDP in order to infer demographic history...
March 3, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329311/comparative-effectiveness-of-high-dose-versus-standard-dose-influenza-vaccines-among-us-medicare-beneficiaries-in-preventing-postinfluenza-deaths-during-2012-2013-and-2013-2014
#15
David K Shay, Yoganand Chillarige, Jeffrey Kelman, Richard A Forshee, Ivo M Foppa, Michael Wernecke, Yun Lu, Jill M Ferdinands, Arjun Iyengar, Alicia M Fry, Chris Worrall, Hector S Izurieta
Background.: Recipients of high-dose vs standard-dose influenza vaccines have fewer influenza illnesses. We evaluated the comparative effectiveness of high-dose vaccine in preventing postinfluenza deaths during 2012-2013 and 2013-2014, when influenza viruses and vaccines were similar. Methods.: We identified Medicare beneficiaries aged ≥65 years who received high-dose or standard-dose vaccines in community-located pharmacies offering both vaccines. The primary outcome was death in the 30 days following an inpatient or emergency department encounter listing an influenza International of Classification of Diseases, Ninth Revision, Clinical Modification code...
March 2, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329073/moving-toward-improved-influenza-vaccines
#16
Arnold S Monto
No abstract text is available yet for this article.
March 2, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329310/immunologic-pathways-that-predict-mortality-in-hiv-infected-ugandans-initiating-art
#17
Sulggi Lee, Helen Byakwaga, Yap Boum, Tricia H Burdo, Kenneth C Williams, Michael M Lederman, Yong Huang, Russell P Tracy, Huyen Cao, Jessica E Haberer, Annet Kembabazi, David R Bangsberg, Jeffrey N Martin, Peter W Hunt
Plasma kynurenine/tryptophan (KT) ratio, a marker of adaptive immune defects, strongly predicts mortality during treated HIV disease in Ugandans compared to U.S.-based populations, Here, KT ratio, and T cell and plasma biomarkers of immune activation were measured among 535 HIV-infected Ugandans prior to ART initiation and at month 6 of viral suppression. Month 6 KT ratio (aHR=2.74), sCD14 (aHR=2.32), IL-6 (aHR=2.34), and D dimer (aHR=1.95) were associated with mortality occurring ≥6 months after ART initiation, KT ratio remained significantly predictive of mortality even after adjustment for the additional biomarkers, suggesting an independent contribution to clinical outcomes in resource-limited settings...
March 1, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329119/stratification-of-latent-tuberculosis-infection-by-cellular-immune-profiling
#18
Alice Halliday, Hilary Whitworth, Sherine Hermagild Kottoor, Umar Niazi, Sarah Menzies, Heinke Kunst, Samuel Bremang, Amarjit Badhan, Peter Beverley, Onn Min Kon, Ajit Lalvani
Background: Recently-acquired and remotely-acquired latent tuberculosis (TB) infection (LTBI) are clinically indistinguishable, yet recent acquisition of infection is the greatest risk factor for progression to active TB (ATB) in immunocompetent individuals. We aimed to evaluate the ability of cellular immune signatures which differ between ATB and LTBI, to distinguish recently from remotely acquired LTBI. Methods: Fifty-nine individuals were recruited: ATB (n=20); recent LTBI (n=19); remote LTBI (n=20)...
February 28, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329047/gilding-the-lily-enhancing-antenatal-malaria-prevention-in-hiv-infected-women
#19
Feiko O Ter Kuile, Steve M Taylor
No abstract text is available yet for this article.
February 28, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329249/acetylation-regulates-protein-stability-and-dna-binding-ability-of-hild-to-modulate-salmonella-typhimurium-virulence
#20
Yu Sang, Jie Ren, Ran Qin, Shuting Liu, Zhongli Cui, Sen Cheng, Xiaoyun Liu, Jie Lu, Jing Tao, Yu-Feng Yao
HilD, a dominant regulator of Salmonella pathogenicity island 1 (SPI-1), can be acetylated by acetyltransferase Pat in Salmonella Typhimurium, and the acetylation is beneficial to its stability. However, the underlying mechanism of HilD stability regulated by acetylation is not clear. We show here that lysine 297 (K297) located in the helix-turn-helix motif, can be acetylated by Pat. Acetylation of K297 increases HilD stability, but reduces its DNA-binding affinity. In turn, the deacetylated K297 enhances the DNA-binding ability, but decreases HilD stability...
February 24, 2017: Journal of Infectious Diseases
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