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https://www.readbyqxmd.com/read/29351663/mini-review-can-non-human-leucocyte-antigen-genes-determine-susceptibility-to-severe-dengue-syndromes
#1
Dorothy Ng, Aparna Ghosh, Mark Jit, Suranjith L Seneviratne
Dengue viral infections are endemic or epidemic in virtually all tropical countries. Among individuals infected with the dengue virus, severe dengue syndromes (i.e., dengue haemorrhagic fever and dengue shock syndromes) tend to affect only some and this may be due to a combination of host genetic susceptibility and viral factors. In this review article we analyse and discuss the present knowledge of non-human leucocyte antigen host genetic susceptibility to severe dengue syndromes. The relevance of genetic polymorphisms in the pathways of antigen recognition, uptake, processing and presentation, activation of interferon α responses, mast cell and complement activation and T cell activation and dengue disease severity has been reviewed and analysed...
January 17, 2018: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29348555/novel-immunoinformatics-approaches-to-design-multi-epitope-subunit-vaccine-for-malaria-by-investigating-anopheles-salivary-protein
#2
Rajan Kumar Pandey, Tarun Kumar Bhatt, Vijay Kumar Prajapati
Malaria fever has been pervasive for quite a while in tropical developing regions causing high morbidity and mortality. The causal organism is a protozoan parasite of genus Plasmodium which spreads to the human host by the bite of hitherto infected female Anopheles mosquito. In the course of biting, a salivary protein of Anopheles helps in blood feeding behavior and having the ability to elicit the host immune response. This study represents a series of immunoinformatics approaches to design multi-epitope subunit vaccine using Anopheles mosquito salivary proteins...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29339224/emerging-souvenirs-clinical-presentation-of-the-returning-traveller-with-imported-arbovirus-infections-in-europe
#3
Isabella Eckerle, Violeta Briciu, Onder Ergonul, Mihaela Lupse, Anna Papa, Amanda Radulescu, Sotirios Tsiodras, Christine Tsitou, Christian Drosten, Véronique Nussenblatt, Chantal Reusken, Louise Sigfrid, Nick J Beeching
BACKGROUND: Arboviruses are an emerging group of viruses that are causing increasing health concerns globally, including in Europe. Clinical presentation usually consists of a non-specific febrile illness that may be accompanied by rash, arthralgia and arthritis and/or with neurological or haemorrhagic syndromes. The range of differential diagnoses of other infectious and non-infectious aetiologies is broad, presenting a challenge for physicians. While knowledge of the geographic distribution of pathogens and the current epidemiological situation, incubation periods, exposure risk factors and vaccination history can help guide the diagnostic approach, the non-specific and variable clinical presentation can delay final diagnosis...
January 12, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29338001/modelling-the-large-scale-yellow-fever-outbreak-in-luanda-angola-and-the-impact-of-vaccination
#4
Shi Zhao, Lewi Stone, Daozhou Gao, Daihai He
BACKGROUND: Yellow fever (YF), transmitted via bites of infected mosquitoes, is a life-threatening viral disease endemic to tropical and subtropical regions of Africa and South America. YF has largely been controlled by widespread national vaccination campaigns. Nevertheless, between December 2015 and August 2016, YF resurged in Angola, quickly spread and becoming the largest YF outbreak for the last 30 years. Recently, YF resurged again in Brazil (December 2016). Thus, there is an urgent need to gain better understanding of the transmission pattern of YF...
January 16, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29332210/pathogen-specific-leptospiral-proteins-in-urine-of-patients-with-febrile-illness-aids-in-differential-diagnosis-of-leptospirosis-from-dengue
#5
R Chaurasia, K C Thresiamma, C K Eapen, B J Zachariah, R Paul, M Sritharan
Leptospirosis and dengue are two commonly seen infectious diseases of the tropics. Differential diagnosis of leptospirosis from dengue fever is often difficult due to overlapping clinical symptoms and lack of economically viable and easy-to-perform laboratory tests. The gold standard for diagnosis is the microscopic agglutination test (MAT). In this study, the diagnostic potential of screening for pathogen-specific leptospiral antigens in urine samples is presented as a non-invasive method of disease diagnosis...
January 13, 2018: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29331008/atypical-presentation-of-rickettsial-spotted-fever
#6
Uday Prabhakar, Anup Singh
Acute febrile illness is a common entity in tropics and often is challenging due a host of pathogenic bacteria, viruses and fungi. Extensive work up is required for better management. Rickettsiosis is uncommon and hence comes lower down in the differentials of multiorgan failure being superseded by the more common diseases as malaria, enteric fever and Dengue. We document a case of young male presenting with high grade fever, multiorgan dysfunction (hepatic, renal, neurological and respiratory involvement), conjunctival suffusion, retiform rash and without lymphadenopathy...
October 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/29318570/confusion-strongly-associated-with-antibiotic-prescribing-due-to-suspected-urinary-tract-infections-in-nursing-homes
#7
Sean Mayne, Pär-Daniel Sundvall, Ronny Gunnarsson
OBJECTIVES: To quantify the prevalence of documented urinary tract infection (UTI), nonspecific symptoms, and antibiotic treatment of suspected UTI in nursing homes (NHs) in the tropics and to describe the typical resident likely to receive antibiotic treatment for suspected UTI and factors associated with the development of confusion, fatigue, and restlessness. DESIGN: Cross-sectional. SETTING: Five far north Queensland NHs in tropical Australia...
January 10, 2018: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/29317889/clinical-and-laboratory-analysis-of-patients-with-leishmaniasis-a-retrospective-study-from-a-tertiary-care-center-in-new-delhi
#8
Nitin Gupta, Kamla Kant, Bijay Ranjan Mirdha
Background: Leishmaniasis manifests as visceral (VL), cutaneous (CL) or a dermal sequel of VL, known as Post kala-azar dermal leishmaniasis (PKDL). The aim of the study was to analyze the clinical and laboratory features of cases diagnosed with leishmaniasis. Methods: This hospital-based retrospective study included all cases of VL, PKDL, and CL diagnosed between Jan 2011 to Jan 2016 at All India Institute of Medical Sciences, New Delhi. Clinical and laboratory profile of the diagnosed cases were analyzed in detail...
October 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/29296705/zika-and-chikungunya-virus-infections-in-hematopoietic-stem-cell-transplant-recipients-and-oncohematological-patients
#9
Clarisse Martins Machado, Bárbara Brito de Souza Pereira, Alvina Clara Felix, Maria Carolina Oliveira, Luiz Guilherme Darrigo, Mair Pedro de Souza, Eduardo José de Alencar Paton, Fabia Neves, Vergilio Rensi Colturato, Belinda Pinto Simoes
Aedes mosquitoes are well adapted in domestic environments and widespread in tropical regions. Since 2015, Brazil has been experiencing a triple epidemic of dengue (DENV), chikungunya (CHKV), and Zika (ZIKV) viruses. The last 2 viruses are likely following the path of DENV, which has been endemic in most parts of the country since the 1980s. Given this triple epidemic, we proposed a prospective and collaborative study to assess the prevalence, morbidity, and mortality of DENV, CHKV, and ZIKV infections in hematopoietic stem cell transplant (HSCT) recipients and oncohematological patients...
April 11, 2017: Blood Advances
https://www.readbyqxmd.com/read/29288826/ethnopharmacological-uses-phytochemistry-and-pharmacology-of-genus-adiantum-a-comprehensive-review
#10
REVIEW
Subha Rastogi, Madan Mohan Pandey, Ajay Kumar Singh Rawat
ETHNOPHARMACOLOGICAL RELEVANCE: Genus Adiantum (Pteridaceae) forms a significant dominant component of many plant communities especially in the tropical and temperate regions. These are commonly known as maidenhair ferns and several have been used medicinally in different parts of the world. They exhibit antidysenteric, antiulcer, antimicrobial, antitumor and antiviral activities. The traditional uses of Adiantum species are known to be for respiratory problems such as cough cold, fever, pneumonia and mucous formation...
December 27, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29279320/uk-role-4-military-infectious-diseases-and-tropical-medicine-cases-in-2005-2013
#11
Daniel S Burns, M R Riley, A Mason, M S Bailey
INTRODUCTION: Infectious diseases are a frequent cause of morbidity among British troops. The aim of this paper is to describe the spectrum of infectious diseases seen when UK service personnel are evacuated for definitive care to the Role 4 Medical Treatment Facility based at Birmingham Heartlands Hospital. METHOD: A retrospective analysis of all military patients presenting with infectious diseases and treated at Birmingham Heartlands Hospital between 14 April 2005 and 31 December 2013 was undertaken...
December 25, 2017: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/29234353/enteric-fever-caused-by-salmonella-enterica-serovars-with-reduced-susceptibility-of-fluoroquinolones-at-a-community-based-teaching-hospital-of-nepal
#12
Anjeela Bhetwal, Anjila Maharjan, Puspa Raj Khanal, Narayan Prasad Parajuli
Enteric fever continues to be an important public health problem especially in developing countries of the tropical region including Nepal. In this study, we aimed to investigate the incidence of enteric fever associated with Salmonella enterica and determine its antimicrobial susceptibilities to therapeutic antimicrobials in a community based teaching hospital of Nepal. A total of 2,304 blood samples from suspected enteric fever patients attending Manmohan Memorial Teaching Hospital were processed with standard microbiological methods for the isolation and identification of bacterial pathogens...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/29228974/central-nervous-system-transcriptome-of-biomphalaria-alexandrina-an-intermediate-host-for-schistosomiasis
#13
Tamer A Mansour, Mohamed R Habib, Laura C Vicente Rodríguez, Anthony Hernández Vázquez, Julián Maldonado Alers, Alfredo Ghezzi, Roger P Croll, C Titus Brown, Mark W Miller
OBJECTIVE: Globally, more than 200 million people live at risk of the neglected tropical disease schistosomiasis (or snail fever). Larval schistosomes require the presence of specific snail species that act as intermediate hosts, supporting their multiplication and transformation into forms that can infect humans. This project was designed to generate a transcriptome from the central nervous system (CNS) of Biomphalaria alexandrina, the major intermediate host for Schistosoma mansoni in Egypt...
December 11, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29221616/dengue-fever-report-from-the-task-force-on-tropical-diseases-by-the-world-federation-of-societies-of-intensive-and-critical-care-medicine
#14
REVIEW
Pravin Amin, Özlem Acicbe, Jorge Hidalgo, Juan Ignacio Silesky Jiménez, Tim Baker, Guy A Richards
Dengue is an arbovirus affecting humans and spread by mosquitoes. Severe dengue follows a secondary infection with a different virus serotype. The problem is truly global as it is endemic in over 100 countries. Severe dengue can be a life-threatening because of increased vascular permeability, resulting in leakage of fluid from the intravascular compartment to the extravascular space. When major bleeding does occur, it is almost invariably combined with profound shock since this, in combination with thrombocytopenia, hypoxia, and acidosis, can lead to multiple organ failure and disseminated intravascular coagulation...
November 5, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/29221523/estimating-effects-of-temperature-on-dengue-transmission-in-colombian-cities
#15
Víctor Hugo Peña-García, Omar Triana-Chávez, Sair Arboleda-Sánchez
BACKGROUND: Dengue fever is a viral disease that affects tropical and subtropical regions of the world. It is well known that processes related to virus transmission by mosquitoes are highly influenced by weather. Temperature has been described as one of the climatic variables that largely governs the development and survival of mosquito eggs as well as the survival of all insect stages. Previously, we noted that high temperatures in the Colombian city of Riohacha negatively affect the establishment of dengue virus (DENV) infection in mosquitoes; in Bello and Villavicencio cities, which have lower average temperatures, DENV infection rates in mosquitoes are positively associated with a gradual increase in temperature...
May 2017: Annals of Global Health
https://www.readbyqxmd.com/read/29217880/renal-manifestation-in-scrub-typhus-during-a-major-outbreak-in-central-nepal
#16
A Sedhain, G R Bhattarai
Renal involvement and acute kidney injury (AKI) are common clinical manifestations seen in scrub typhus, a vector-borne tropical disease. There are no data on renal manifestation in scrub typhus in Nepal. We conducted a prospective study to analyze the incidence, urinary abnormalities, course, severity, outcome, and the predictors of AKI in patients with scrub typhus during a major outbreak in Central Nepal. Total 1398 patients admitted with acute febrile illness were subjected for Scrub Typhus Detect™ Immunoglobulin M (IgM) enzyme-linked immunosorbent assay (ELISA) test, of which 502 (35...
November 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/29211001/exploring-determinants-of-spatial-variations-in-the-dengue-fever-epidemic-using-geographically-weighted-regression-model-a-case-study-in-the-joint-guangzhou-foshan-area-china-2014
#17
Hongyan Ren, Lan Zheng, Qiaoxuan Li, Wu Yuan, Liang Lu
Dengue fever (DF) is a common and rapidly spreading vector-borne viral disease in tropical and subtropical regions. In recent years, this imported disease has posed an increasing threat to public health in China, especially in many southern cities. Although the severity of DF outbreaks in these cities is generally associated with known risk factors at various administrative levels, spatial heterogeneities of these associations remain little understood on a finer scale. In this study, the neighboring Guangzhou and Foshan (GF) cities were considered as a joint area for characterizing the spatial variations in the 2014 DF epidemic at various grid levels from 1 × 1 km² to 6 × 6 km²...
December 6, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29207706/detection-of-blactx-m-extended-spectrum-beta-lactamase-producing-salmonella-enterica-serotype-typhi-in-a-tertiary-care-centre
#18
Aishwarya Ramachandran, Mariappan Shanthi, Uma Sekar
Introduction: Infections caused by Salmonella are an important public health threat in tropical and subtropical countries. Due to the emergence of resistance to ampicillin, chloramphenicol and trimethoprim/sulfamethoxazole (multidrug resistant salmonellae) in the late 1980s, fluoroquinolones and extended spectrum cephalosporins became the drugs of choice. Resistance to cefotaxime and ceftriaxone due to the production of Extended Spectrum Beta-Lactamase (ESBL) and reduced susceptibility to ciprofloxacin have emerged resulting in treatment failure...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29196275/global-risk-mapping-for-major-diseases-transmitted-by-aedes-aegypti-and-aedes-albopictus
#19
Samson Leta, Tariku Jibat Beyene, Eva M De Clercq, Kebede Amenu, Crawford Revie
OBJECTIVES: The objective of this study was to map the global risk of the major arboviral diseases transmitted by Aedes aegypti and Ae. albopictus by identifying areas where the diseases are reported either through active transmission or travel related outbreaks, as well as areas where the diseases are not currently reported but are nonetheless suitable for the vector. METHODS: This study extracts data from some of the largest contemporary databases relating to five arboviral diseases (Zika, dengue fever, chikungunya, yellow fever and RVF) and pairs these data with the known distribution of their vectors, Ae...
November 28, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29162320/controlled-human-infections-a-report-from-the-controlled-human-infection-models-workshop-leiden-university-medical-centre-4-6-may-2016
#20
Meta Roestenberg, Annie Mo, Peter G Kremsner, Maria Yazdanbakhsh
The principle of deliberately infecting humans with infectious agents in a controlled setting, so-called controlled human infections (CHI), is not novel. Many CHI models have a long history and were established decades ago such as the intentional exposure to yellow fever and dengue performed in the 1900's (Reed, 1902) [2]. In these times bioethics and scientific reasoning were in their infancy. Nowadays, clinical trials are highly regulated and CHI are executed worldwide. Controlled human malaria infections and influenza infections are the two most frequently practiced...
November 18, 2017: Vaccine
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