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https://www.readbyqxmd.com/read/29777923/diagnosis-and-management-of-pulmonary-infection-due-to-rhodococcus-equi
#1
REVIEW
Weijie V Lin, Robert L Kruse, Katharine Yang, Daniel M Musher
BACKGROUND: Rhodococcus equi is a recognized cause of disease in humans, especially in patients who are immunocompromised. Because diphtheroids are regarded as part of normal respiratory flora, the importance of R. equi as a pulmonary pathogen may not be fully appreciated and its prevalence underestimated. Most treatment recommendations for R. equi infection were established before antiretroviral drugs became available for HIV/AIDS therapy, and therapeutic strategies may need to be updated...
May 16, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29777870/profiling-modifications-for-glioblastoma-proteome-using-ultra-tolerant-database-search-are-the-peptide-mass-shifts-biologically-relevant-or-chemically-induced
#2
Irina A Tarasova, Peter M Chumakov, Sergei A Moshkovskii, Mikhail V Gorshkov
Peptide mass shifts were profiled using ultra-tolerant database search strategy for shotgun proteomics data sets of human glioblastoma cell lines demonstrating strong response to the type I interferon (IFNα-2b) treatment. The main objective of this profiling was revealing the cell response to IFN treatment at the level of protein modifications. To achieve this objective, statistically significant changes in peptide mass shift profiles between IFN treated and untreated glioblastoma samples were analyzed. Detailed analysis of MS/MS spectra allowed further interpretation of the observed mass shifts and differentiation between post-translational and artifact modifications...
May 16, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29773744/worldwide-emergence-of-resistance-to-antifungal-drugs-challenges-human-health-and-food-security
#3
REVIEW
Matthew C Fisher, Nichola J Hawkins, Dominique Sanglard, Sarah J Gurr
The recent rate of emergence of pathogenic fungi that are resistant to the limited number of commonly used antifungal agents is unprecedented. The azoles, for example, are used not only for human and animal health care and crop protection but also in antifouling coatings and timber preservation. The ubiquity and multiple uses of azoles have hastened the independent evolution of resistance in many environments. One consequence is an increasing risk in human health care from naturally occurring opportunistic fungal pathogens that have acquired resistance to this broad class of chemicals...
May 18, 2018: Science
https://www.readbyqxmd.com/read/29772254/effect-of-interferon-alpha-and-cyclosporine-treatment-separately-and-in-combination-on-middle-east-respiratory-syndrome-coronavirus-mers-cov-replication-in-a-human-in-vitro-and-ex-vivo-culture-model
#4
H S Li, Denise I T Kuok, M C Cheung, Mandy M T Ng, K C Ng, Kenrie P Y Hui, J S Malik Peiris, Michael C W Chan, John M Nicholls
Middle East Respiratory Syndrome Coronavirus (MERS-CoV) has emerged as a coronavirus infection of humans in the past 5 years. Though confined to certain geographical regions of the world, infection has been associated with a case fatality rate of 35%, and this mortality may be higher in ventilated patients. As there are few readily available animal models that accurately mimic human disease, it has been a challenge to ethically determine what optimum treatment strategies can be used for this disease. We used in-vitro and human ex-vivo explant cultures to investigate the effect of two immunomodulatory agents, interferon alpha and cyclosporine, singly and in combination, on MERS-CoV replication...
May 14, 2018: Antiviral Research
https://www.readbyqxmd.com/read/29771685/enterotoxigenic-escherichia-coli-blood-group-a-interactions-intensify-diarrheal-severity
#5
Pardeep Kumar, F Matthew Kuhlmann, Subhra Chakroborty, A Louis Bourgeois, Jennifer Foulke-Abel, Brunda Tumala, Tim J Vickers, David A Sack, Barbara DeNearing, Clayton D Harro, W Shea Wright, Jeffrey C Gildersleeve, Matthew A Ciorba, Srikanth Santhanam, Chad K Porter, Ramiro L Gutierrez, Michael G Prouty, Mark S Riddle, Alexander Polino, Alaullah Sheikh, Mark Donowitz, James M Fleckenstein
Enterotoxigenic Escherichia coli (ETEC) infections are highly prevalent in developing countries where clinical presentations range from asymptomatic colonization to severe cholera-like illness. The molecular basis for these varied presentations, that may involve strain-specific virulence features as well as host factors, have not been elucidated. We demonstrate that when challenged with ETEC strain H10407, originally isolated from a case of cholera-like illness, blood group A human volunteers developed severe diarrhea more frequently than individuals from other blood groups...
May 17, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29769344/efficient-delivery-of-hcmv-t-cell-antigens-by-attenuated-sendai-virus-vectors
#6
Richard Kiener, Markus Fleischmann, Marian Alexander Wiegand, Niels A W Lemmermann, Christiane Schwegler, Christine Kaufmann, Angelique Renzaho, Simone Thomas, Eva Felder, Hans Helmut Niller, Benedikt Asbach, Ralf Wagner
Human Cytomegalovirus (HCMV) represents a major cause of clinical complications during pregnancy as well as immunosuppression and the licensing of a protective HCMV vaccine remains an unmet global need. Herein, we designed and validated novel Sendai virus (SeV) vectors delivering T cell immunogens IE-1 and pp65. To enhance vector safety, we used a replication-deficient strain (rdSeV) that infects target cells in a non-productive manner while retaining viral gene expression. In this study, we explored the impact that transduction with rdSeV has on human dendritic cells (DCs) by comparing it to the parental, replication-competent Sendai virus strain (rcSeV) as well as the poxvirus strain Modified Vaccinia Ankara (MVA)...
May 16, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29769339/differential-responses-by-human-respiratory-epithelial-cell-lines-to-respiratory-syncytial-virus-reflect-distinct-patterns-of-infection-control
#7
Philippa Hillyer, Rachel Shepard, Megan Uehling, Mina Krenz, Faruk Sheikh, Kalyn R Thayer, Lei Huang, Lihan Yan, Debasis Panda, Cindy Luongo, Ursula J Buchholz, Peter L Collins, Raymond P Donnelly, Ronald L Rabin
RSV infects small foci of respiratory epithelial cells via infected droplets. Infection induces expression of types I and III interferons (IFNs) and pro-inflammatory cytokines, the balance of which may restrict viral replication and affect disease severity. We explored this balance by infecting two respiratory epithelial cell lines with low doses of recombinant RSV expressing green fluorescent protein (rgRSV). A549 cells were highly permissive whereas BEAS-2B cells restricted infection to individual cells or small foci...
May 16, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29769269/trim29-negatively-regulates-the-type-i-ifn-production-in-response-to-rna-virus
#8
Junji Xing, Ao Zhang, Laurie J Minze, Xian Chang Li, Zhiqiang Zhang
The innate immunity is critically important in protection against virus infections, and in the case of RNA viral infections, the signaling mechanisms that initiate robust protective innate immunity without triggering autoimmune inflammation remain incompletely defined. In this study, we found the E3 ligase TRIM29 was specifically expressed in poly I:C-stimulated human myeloid dendritic cells. The induced TRIM29 played a negative role in type I IFN production in response to poly I:C or dsRNA virus reovirus infection...
May 16, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29765101/favipiravir-t-705-protects-against-nipah-virus-infection-in-the-hamster-model
#9
Brian E Dawes, Birte Kalveram, Tetsuro Ikegami, Terry Juelich, Jennifer K Smith, Lihong Zhang, Arnold Park, Benhur Lee, Takashi Komeno, Yousuke Furuta, Alexander N Freiberg
Nipah and Hendra viruses are recently emerged bat-borne paramyxoviruses (genus Henipavirus) causing severe encephalitis and respiratory disease in humans with fatality rates ranging from 40-75%. Despite the severe pathogenicity of these viruses and their pandemic potential, no therapeutics or vaccines are currently approved for use in humans. Favipiravir (T-705) is a purine analogue antiviral approved for use in Japan against emerging influenza strains; and several phase 2 and 3 clinical trials are ongoing in the United States and Europe...
May 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29764948/inducible-lung-epithelial-resistance-requires-multisource-reactive-oxygen-species-generation-to-protect-against-viral-infections
#10
Carson T Kirkpatrick, Yongxing Wang, Miguel M Leiva Juarez, Pooja Shivshankar, Jezreel Pantaleón García, Alexandria K Plumer, Vikram V Kulkarni, Hayden H Ware, Fahad Gulraiz, Miguel A Chavez Cavasos, Gabriela Martinez Zayes, Shradha Wali, Andrew P Rice, Hongbing Liu, James M Tour, William K A Sikkema, Ana S Cruz Solbes, Keith A Youker, Michael J Tuvim, Burton F Dickey, Scott E Evans
Viral pneumonias cause profound worldwide morbidity, necessitating novel strategies to prevent and treat these potentially lethal infections. Stimulation of intrinsic lung defenses via inhalation of synergistically acting Toll-like receptor (TLR) agonists protects mice broadly against pneumonia, including otherwise-lethal viral infections, providing a potential opportunity to mitigate infectious threats. As intact lung epithelial TLR signaling is required for the inducible resistance and as these cells are the principal targets of many respiratory viruses, the capacity of lung epithelial cells to be therapeutically manipulated to function as autonomous antiviral effectors was investigated...
May 15, 2018: MBio
https://www.readbyqxmd.com/read/29764370/-tuberculosis-in-advanced-hiv-infection-is-associated-with-increased-expression-of-ifn%C3%AE-and-its-downstream-targets
#11
Sheetal Verma, Peicheng Du, Damalie Nakanjako, Sabine Hermans, Jessica Briggs, Lydia Nakiyingi, Jerrold J Ellner, Yukari C Manabe, Padmini Salgame
BACKGROUND: Tuberculosis (TB) is the major cause of death in Human Immunodeficiency Virus (HIV)-infected individuals. However, diagnosis of TB in HIV remains challenging particularly when HIV infection is advanced. Several gene signatures and serum protein biomarkers have been identified that distinguish active TB from latent infection. Our study was designed to assess if gene expression signatures and cytokine levels would distinguish active TB in advanced HIV. METHODS: We conducted a case-control study of whole blood RNA-Seq and plasma cytokine/chemokine analysis in HIV-infected with CD4+ T cell count of ≤ 100 cells/μl, with and without active TB...
May 15, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29762161/anti-hiv-igm-protects-against-mucosal-shiv-transmission
#12
Siqi Gong, Khamis Tomusange, Viraj Kulkarni, Opeyemi S Adeniji, Samir K Lakhashe, Dinesh Hariraju, Amanda Strickland, Elizabeth Plake, Patrice A Frost, Sarah J Ratcliffe, Liping Wang, Eileen M Lafer, Ruth M Ruprecht
OBJECTIVE: Worldwide, most new HIV infections occur through mucosal exposure. Immunoglobulin M (IgM) is the first antibody class generated in response to infectious agents; IgM is present in the systemic circulation and in mucosal fluids as secretory IgM. We sought to investigate for the first time the role of IgM in preventing AIDS virus acquisition in vivo. DESIGN: Recombinant polymeric monoclonal IgM was generated from the neutralizing monoclonal IgG1 antibody 33C6-IgG1, tested in vitro, and given by passive intrarectal (i...
May 11, 2018: AIDS
https://www.readbyqxmd.com/read/29761873/infection-of-trichophyton-verrucosum-in-cattle-breeders-poland-a-40-year-retrospective-study-on-the-genomic-variability-of-strains
#13
Sebastian Gnat, Dominik Łagowski, Aneta Nowakiewicz, Aleksandra Trościańczyk, Przemysław Zięba
BACKGROUND: Trichophyton verrucosum is a zoophilic fungus that is the most frequent etiologic agent of dermatophytosis in cattle. During the last few years, the number of cases of T. verrucosum from humans has been increasing constantly, which is correlated with the presence of cattle rearing farms. OBJECTIVES: We identified and analysed T. verrucosum strains isolated from humans and cattle. METHODS: Identification was carried out traditionally by correlating both the clinical manifestations with a micro- and macroscopic examination...
May 15, 2018: Mycoses
https://www.readbyqxmd.com/read/29761622/host-heme-oxygenase-1-friend-or-foe-in-tackling-pathogens
#14
REVIEW
Nisha Singh, Zeeshan Ahmad, Navin Baid, Ashwani Kumar
Infectious diseases are a major challenge in management of human health worldwide. Recent literature suggests that host immune system could be modulated to ameliorate the pathogenesis of infectious disease. Heme oxygenase (HMOX1) is a key regulator of cellular signaling and it could be modulated using pharmacological reagents. HMOX1 is a cytoprotective enzyme that degrades heme to generate carbon monoxide (CO), biliverdin, and molecular iron. CO and biliverdin (or bilirubin derived from it) can restrict the growth of a few pathogens...
May 14, 2018: IUBMB Life
https://www.readbyqxmd.com/read/29760700/bacillus-calmette-gu%C3%A3-rin-induced-trained-immunity-is-not-protective-for-experimental-influenza-a-anhui-1-2013-h7n9-infection-in-mice
#15
Charlotte L C J de Bree, Renoud J Marijnissen, Junda M Kel, Sietske K Rosendahl Huber, Peter Aaby, Christine Stabell Benn, Marcel V W Wijnands, Dimitri A Diavatopoulos, Reinout van Crevel, Leo A B Joosten, Mihai G Netea, John Dulos
Avian influenza A of the subtype H7N9 has been responsible for almost 1,600 confirmed human infections and more than 600 deaths since its first outbreak in 2013. Although sustained human-to-human transmission has not been reported yet, further adaptations to humans in the viral genome could potentially lead to an influenza pandemic, which may have severe consequences due to the absence of pre-existent immunity to this strain at population level. Currently there is no influenza A (H7N9) vaccine available. Therefore, in case of a pandemic outbreak, alternative preventive approaches are needed, ideally even independent of the type of influenza virus outbreak...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29758536/characterization-of-sesec_01411-as-a-surface-protective-antigen-of-streptococcus-equi-ssp-zooepidemicus
#16
Honglin Xie, Zigong Wei, Chunquan Ma, Shun Li, Xiaohong Liu, Qiang Fu
Streptococcus equi ssp. zooepidemicus (Streptococcus zooepidemicus, SEZ) is a commensal bacterium related to opportunistic infections of many species, including humans, dogs, cats, and pigs. SeseC_01411 has been proven to be immunogenic. However, its protective efficacy remained to be evaluated. In the present study, the purified recombinant SeseC_01411 could elicit a strong humoral antibody response and protect against lethal challenge with virulent SEZ in mice. Our finding confirmed that SeseC_01411 distributes on the surface of SEZ...
May 8, 2018: Research in Veterinary Science
https://www.readbyqxmd.com/read/29758005/a-review-of-the-ongoing-research-on-zika-virus-treatment
#17
REVIEW
Suely da Silva, Daniel Oliveira Silva Martins, Ana Carolina Gomes Jardim
The Zika fever is an arboviral disease resulting from the infection with Zika virus (ZIKV). The virus is transmitted to humans by the bite of Aedes mosquitos, mainly Aedes aegypti and Aedes albopictus . ZIKV has been detected for decades in African and Asian regions and, since 2007, has spread to other continents; among them, infections are most reported in the Americas. This can be explained by the presence of vectors in highly populated and tropical regions where people are susceptible to contamination. ZIKV has been considered by the World Health Organization a serious public health problem because of the increasing number of cases of congenital malformation and neurological disorders related to its infection, such as microcephaly, Guillain⁻Barré syndrome, meningoencephalitis, and myelitis...
May 14, 2018: Viruses
https://www.readbyqxmd.com/read/29757218/detection-of-specific-zikv-igm-in-travelers-using-a-multiplexed-flavivirus-microsphere-immunoassay
#18
Carmel T Taylor, Ian M Mackay, Jamie L McMahon, Sarah L Wheatley, Peter R Moore, Mitchell J Finger, Glen R Hewitson, Frederick A Moore
Zika virus (ZIKV) has spread widely in the Pacific and recently throughout the Americas. Unless detected by RT-PCR, confirming an acute ZIKV infection can be challenging. We developed and validated a multiplexed flavivirus immunoglobulin M (IgM) microsphere immunoassay (flaviMIA) which can differentiate ZIKV-specific IgM from that due to other flavivirus infections in humans. The flaviMIA bound 12 inactivated flavivirus antigens, including those from ZIKV and yellow fever virus (YFV), to distinct anti-flavivirus antibody coupled beads...
May 12, 2018: Viruses
https://www.readbyqxmd.com/read/29756788/identifying-job-characteristics-related-to-employed-women-s-breastfeeding-behaviors
#19
Christiane Spitzmueller, Jing Zhang, Candice L Thomas, Zhuxi Wang, Gwenith G Fisher, Russell A Matthews, Lane Strathearn
For employed mothers of infants, reconciliation of work demands and breastfeeding constitutes a significant challenge. The discontinuation of breastfeeding has the potential to result in negative outcomes for the mother (e.g., higher likelihood of obesity), her employer (e.g., increased absenteeism), and her infant (e.g., increased risk of infection). Given previous research findings identifying return to work as a major risk factor for breastfeeding cessation, we investigate what types of job characteristics relate to women's intentions to breastfeed shortly after giving birth and women's actual breastfeeding initiation and duration...
May 14, 2018: Journal of Occupational Health Psychology
https://www.readbyqxmd.com/read/29756447/electrochemical-methodologies-for-the-detection-of-pathogens
#20
Mandana Amiri, Abolfazl Bezaatpour, Hamed Jafari, Rabah Boukherroub, Sabine Szunerits
Bacterial infections remain of the principal causes of morbidity and mortality worldwide. The number of death due to infections is declining every year by only 1% with a forecast of 13 million deaths in 2050. Among the 1400 recognized human pathogens, the majority of infectious diseases is caused by just a few, about 20 pathogens only. While the development of vaccinations and novel anti-bacterial drugs and treatments are at the forefront of research, and strongly financially supported by policy makers, another manner to limit and control infectious outbreaks is targeting the development and implementation of early warning systems, which indicate qualitatively and quantitatively the presence of a pathogen...
May 14, 2018: ACS Sensors
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