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https://www.readbyqxmd.com/read/28921542/pathogen-inactivation-of-dengue-virus-in-red-blood-cells-using-amustaline-and-glutathione
#1
Maite Aubry, Andrew Laughhunn, Felicia Santa Maria, Marion C Lanteri, Adonis Stassinopoulos, Didier Musso
BACKGROUND: Dengue virus (DENV) is an arbovirus primarily transmitted through mosquito bite; however, DENV transfusion-transmitted infections (TTIs) have been reported and asymptomatic DENV RNA-positive blood donors have been identified in endemic countries. DENV is considered a high-risk pathogen for blood safety. One of the mitigation strategies to prevent arbovirus TTIs is pathogen inactivation. In this study we demonstrate that the amustaline and glutathione (S-303/GSH) treatment previously found effective against Zika virus in red blood cells (RBCs) is also effective in inactivating DENV...
September 16, 2017: Transfusion
https://www.readbyqxmd.com/read/28919592/the-study-on-the-lives-and-health-conditions-of-internees-in-santo-thomas-camp-of-philippines-based-on-mcanlis-s-the-war-in-manila-1941-1945
#2
Jueyeon Lee, Youngsoo Cho
When Japan invaded the Philippines, two missionary dentists (Dr. McAnlis and Dr. Boots) who were forced to leave Korea were captured and interned in the Santo Thomas camp in Manila. Japan continued to bombard and plunder the Philippines in the wake of the Pacific War following the Great East Asia policy, leading to serious inflation and material deficiency. More than 4,000 Allied citizens held in Santo Thomas camp without basic food and shelter. Santo Thomas Camp was equipped with the systems of the Japanese military medical officers and Western doctors of captivity based on the Geneva Conventions(1929)...
August 2017: Ŭi Sahak
https://www.readbyqxmd.com/read/28919170/importation-of-infectious-diseases-are-increasing-in-south-korea-association-with-international-travels
#3
Young-June Choe, Seung-Ah Choe, Sung-Il Cho
BACKGROUND: International travel has an important role in transmission of emerging infectious diseases. We described the imported infectious diseases in Korea from 2003 to 2012, and to analyze association of travels with the change in the incidences. METHODS: We used National Notifiable Disease Surveillance System to investigate the incidence of salmonellosis, shigellosis, malaria, and dengue. Data from Korea Tourism Organization was used to describe the inbound and outbound travelers by their age group, gender, and purpose of travel...
September 15, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/28918772/incidence-and-risk-factors-for-dengue-virus-denv-infection-in-the-first-2-years-of-life-in-a-brazilian-prospective-birth-cohort
#4
P M S Castanha, U R Montarroyos, S M M Silveira, G D M Albuquerque, M J G Mello, K G S Lopes, M T Cordeiro, E T A Marques, C M T Martelli, C Braga
This study assessed the incidence and risk factors for dengue virus (DENV) infection among children in a prospective birth cohort conducted in the city of Recife, a hyperendemic dengue area in Northeast Brazil. Healthy pregnant women (n = 415) residing in Recife who agreed to have their children followed were enrolled. Children were followed during their first 24 months of age (May/2011-June/2014), before the 2015 Zika virus outbreak. DENV infection was detected by reverse-transcriptase polymerase chain reaction and/or serology (anti-DENV IgM/IgG)...
September 18, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28918127/clinical-laboratory-and-virological-data-from-suspected-zikv-patients-in-an-endemic-arbovirus-area
#5
Tatiana Elias Colombo, Cássia Fernanda Estofolete, Andréia Francesli Negri Reis, Natal Santos da Silva, Morgana Lima Aguiar, Eliana Márcia Sotello Cabrera, Izalco Nuremberg Penha Dos Santos, Fabiana Rodrigues Costa, Lilian Elisa Arão Antônio Cruz, Patrícia Lopes Rombola, Ana Carolina Bernardes Terzian, Maurício Lacerda Nogueira
BACKGROUND: The emergence of Zika virus (ZIKV) presents new challenges to both clinicians and public health authorities. Overlapping clinical features between the diseases caused by ZIKV, dengue (DENV) and chikungunya (CHIKV) and the lack of validated serological assays for ZIKV make accurate diagnosis difficult. Brazilian authorities largely rely on clinical and epidemiological data for the epidemiological and clinical classifications of most ZIKV cases. OBJECTIVE: To report the laboratory and clinical profiles of patients diagnosed with Zika fever based only on clinical and epidemiological data...
September 9, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28917067/dengue-fever-clinical-features-of-567-consecutive-patients-admitted-to-a-tertiary-care-center-in-saudi-arabia
#6
Samar Badreddine, Fahmi Al-Dhaheri, Ammar Al-Dabbagh, Abdulrahman Al-Amoudi, Maged Al-Ammari, Nader Elatassi, Haytham Abbas, Rami Magliah, Abdulbasit Malibari, Hani Almoallim
To delineate the clinical features and outcomes of dengue infection and to guide clinician of early diagnosis and identification of risks factors for dengue hemorrhagic fever. Methods: This study is a retrospective cross-sectional. Clinical records of 567 patients with a confirmed diagnosis of dengue infection, admitted to a single hospital in Jeddah, Saudi Arabia, between January 2010 and  June 2014 were reviewed.  Results: Dengue infection was most common in adult males. Sixty-eight percent of infections were in Saudi nationals...
October 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28916719/kir2ds2-recognizes-conserved-peptides-derived-from-viral-helicases-in-the-context-of-hla-c
#7
Mohammed M Naiyer, Sorcha A Cassidy, Andrea Magri, Vanessa Cowton, Kevin Chen, Salah Mansour, Hariklia Kranidioti, Berenice Mbirbindi, Pauline Rettman, Scott Harris, Liam J Fanning, Arend Mulder, Franz H J Claas, Andrew D Davidson, Arvind H Patel, Marco A Purbhoo, Salim I Khakoo
Killer cell immunoglobulin-like receptors (KIRs) are rapidly evolving species-specific natural killer (NK) cell receptors associated with protection against multiple different human viral infections. We report that the activating receptor KIR2DS2 directly recognizes viral peptides derived from conserved regions of flaviviral superfamily 2 RNA helicases in the context of major histocompatibility complex class I. We started by documenting that peptide LNPSVAATL from the hepatitis C virus (HCV) helicase binds HLA-C*0102, leading to NK cell activation through engagement of KIR2DS2...
September 15, 2017: Science Immunology
https://www.readbyqxmd.com/read/28916391/zika-virus-structural-biology-and-progress-in-vaccine-development
#8
REVIEW
Hsiao-Han Lin, Bak-Sau Yip, Li-Min Huang, Suh-Chin Wu
The growing number of zika virus (ZIKV) infections plus a 20-fold increase in neonatal microcephaly in newborns in Brazil have raised alarms in many countries regarding the threat to pregnant women. Instances of microcephaly and central nervous system malformations continue to increase in ZIKV outbreak regions. ZIKV is a small enveloped positive-strand RNA virus belonging to the Flavivirus genus of the Flaviviridae family. High-resolution ZIKV structures recently identified by cryo-electron microscopy indicate that the overall ZIKV structure is similar to those of other flaviviruses...
September 12, 2017: Biotechnology Advances
https://www.readbyqxmd.com/read/28914200/development-of-peptide-vaccines-in-dengue
#9
Kavita Reginald, Yanqi Chan, Magdalena Plebanski, Chit Laa Poh
Dengue is one of the most important arboviral infection worldwide, infecting up to 390 million people and causing 25,000 deaths annually. Although a licensed dengue vaccine is available, it is not efficacious against dengue serotypes that infect people living in South East Asia, where dengue is an endemic disease. Hence, there is an urgent need to develop an efficient dengue vaccine for this region. Data from different clinical trials indicate that a successful dengue vaccine must elicit both neutralizing antibodies and cell mediated immunity...
September 13, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28913959/quantification-through-tlc-densitometric-analysis-repellency-and-anticholinesterase-activity-of-the-homemade-extract-of-indian-cloves
#10
Raphael S Affonso, Josélia A Lima, Bruno Lessa, João V O Caetano, Marcos T Obara, Andrea Nóbrega, Eugenie Nepominova, Kamil Musilek, Kamil Kuca, Gláucia Barbosa Candido Alves Slana, Tanos C C França
The rise of mosquito's transmitted diseases, like dengue, zika and chikungunya in Brazil in the last years has increased the concerns on protection against mosquito's bites. However, the prohibitive prices of the commercially available repellents for the majority of the Brazilian population, has provoked a search for cheaper solutions, like the use of the homemade ethanolic extract of Indian clove (Syzygium aromaticum L.) as repellent, which has been reported as quite efficient by the local press. In order to verify this, we performed here, the quantification of the main components of this extract through high-performance thin-layer chromatography (HPTLC)-densitometry and evaluated its efficiency as repellent, as well as the acetylcholinesterase (AChE) inhibition capacity...
September 15, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28912916/acute-liver-failure-in-a-patient-travelling-from-asia-the-other-face-of-the-coin-of-infectious-disease
#11
Balen Abdulrahman, Mohamed H Ahmed, John Ramage
We present a case of a 63-year-old male who had travelled from South India to United Kingdom (UK) visiting relatives. He had developed episodes of diarrhea, vomiting and fevers while travelling and on assessment in hospital, mild abdominal distension was noted with rapid deterioration to hypovolemic shock. Initial blood test showed a low platelet count with deranged liver function tests (LFTs). It was noted that during admission to intensive care unit (ICU), blood continued to ooze from a previous surgical laparoscopy wound, central and arterial line access sites...
August 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/28912773/hirsutine-an-indole-alkaloid-of-uncaria-rhynchophylla-inhibits-late-step-in-dengue-virus-lifecycle
#12
Takayuki Hishiki, Fumihiro Kato, Shigeru Tajima, Kazufumi Toume, Masahito Umezaki, Tomohiko Takasaki, Tomoyuki Miura
Dengue virus (DENV) is transmitted to humans by Aedes mosquitoes and is a public health issue worldwide. No antiviral drugs specific for treating dengue infection are currently available. To identify novel DENV inhibitors, we analyzed a library of 95 compounds and 120 extracts derived from crude drugs (herbal medicines). In the primary screening, A549 cells infected with DENV-1 were cultured in the presence of each compound and extract at a final concentration of 10 μM (compound) and 100 μg/mL (extract), and reduction of viral focus formation was assessed...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28910810/concurrent-infection-with-plasmodium-vivax-and-the-dengue-and-chikungunya-viruses-in-a-paediatric-patient-from-new-delhi-india-in-2016
#13
Ayesha Tazeen, Mohd Abdullah, Malik Hisamuddin, Sher Ali, Irshad H Naqvi, Hirday N Verma, Anwar Ahmed, Shama Parveen
Dengue and chikungunya fevers are transmitted by the common mosquito vector Aedes and malaria by Anopheles. Concurrent infections are reported due to co-circulation of these pathogens, especially in endemic regions. We report a rare case of triple infection with 3 arthropod-borne pathogens (Plasmodium vivax and the dengue and chikungunya viruses) in a 3-year-old child from New Delhi, India, in August 2016. The viruses were identified by RT-PCR and the parasite by microscopy and antigen detection. The dengue virus serotype 3 sequence was clustered in the genotype III by the phylogenetic analysis...
September 15, 2017: Intervirology
https://www.readbyqxmd.com/read/28910637/intrahost-selection-pressures-drive-rapid-dengue-virus-microevolution-in-acute-human-infections
#14
Poornima Parameswaran, Chunling Wang, Surbhi Bharat Trivedi, Meghana Eswarappa, Magelda Montoya, Angel Balmaseda, Eva Harris
Dengue, caused by four dengue virus serotypes (DENV-1 to DENV-4), is a highly prevalent mosquito-borne viral disease in humans. Yet, selection pressures driving DENV microevolution within human hosts (intrahost) remain unknown. We employed a whole-genome segmented amplification approach coupled with deep sequencing to profile DENV-3 intrahost diversity in peripheral blood mononuclear cell (PBMC) and plasma samples from 77 dengue patients. DENV-3 intrahost diversity appears to be driven by immune pressures as well as replicative success in PBMCs and potentially other replication sites...
September 13, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28910632/drivers-of-dengue-intrahost-evolution
#15
Etienne Simon-Lorière, Marco Vignuzzi
RNA viruses circulate as rapidly evolving swarms of related variants, and their evolutionary dynamics within hosts may be key to understanding virus emergence. In this issue of Cell Host & Microbe, Parameswaran et al. (2017) combine next-generation sequencing and functional studies to characterize viral populations in acute dengue infections.
September 13, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28910198/re-genetic-polymorphisms-of-tumor-necrosis-factor-alpha-and-susceptiblity-to-dengue-virus-infection-in-a-mexican-population-by-s%C3%A3-nchez-leyva-et-al-viral-immunol-2017-epub-ahead-of-print-doi-10-1089-vim-2017-0029
#16
https://www.readbyqxmd.com/read/28906367/predicting-the-mortality-in-geriatric-patients-with-dengue-fever
#17
Hung-Sheng Huang, Chien-Chin Hsu, Je-Chiuan Ye, Shih-Bin Su, Chien-Cheng Huang, Hung-Jung Lin
Geriatric patients have high mortality for dengue fever (DF); however, there is no adequate method to predict mortality in geriatric patients. Therefore, we conducted this study to develop a tool in an attempt to address this issue.We conducted a retrospective case-control study in a tertiary medical center during the DF outbreak in Taiwan in 2015. All the geriatric patients (aged ≥65 years) who visited the study hospital between September 1, 2015, and December 31, 2015, were recruited into this study. Variables included demographic data, vital signs, symptoms and signs, comorbidities, living status, laboratory data, and 30-day mortality...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28905403/infectious-disease-prediction-with-kernel-conditional-density-estimation
#18
Evan L Ray, Krzysztof Sakrejda, Stephen A Lauer, Michael A Johansson, Nicholas G Reich
Creating statistical models that generate accurate predictions of infectious disease incidence is a challenging problem whose solution could benefit public health decision makers. We develop a new approach to this problem using kernel conditional density estimation (KCDE) and copulas. We obtain predictive distributions for incidence in individual weeks using KCDE and tie those distributions together into joint distributions using copulas. This strategy enables us to create predictions for the timing of and incidence in the peak week of the season...
September 14, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28904577/acute-necrotizing-encephalopathy-of-childhood-secondary-to-dengue-infection-a-case-report-from-pakistan
#19
Qalab Abbas, Sidra Kaleem Jafri, Sidra Ishaque, Muhammad T Jamil
Acute necrotizing encephalopathy of childhood (ANEC) is a rare condition mainly affecting children with a distinct clinico-radiologic pattern. Initially thought to be secondary to respiratory viral infections, there have been more insights to the pathogenesis of ANEC including genetics. We present a case of a girl who developed this condition with classical clinico-radiologic findings of ANEC secondary to severe dengue infection and could not survive. We report this case with the aim to raise awareness about this fatal complication of dengue infection as dengue has become a global health-care problem...
April 2017: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28904490/dengue-and-thrombotic-thrombocytopenic-purpura
#20
Viroj Wiwanitkit
No abstract text is available yet for this article.
August 2017: Indian Journal of Critical Care Medicine
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