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Tropical infectious diseases

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https://www.readbyqxmd.com/read/28103964/epidemiology-of-soil-transmitted-helminthiases-related-mortality-in-brazil
#1
Francisco R Martins-Melo, Alberto N Ramos, Carlos H Alencar, Mauricélia S Lima, Jorg Heukelbach
Soil-transmitted helminth (STH) infections are widely distributed in tropical and subtropical areas, including Brazil. We performed a nationwide population-based study including all deaths in Brazil from 2000 to 2011, in which STHs (ascariasis, trichuriasis and/or hookworm infection) were mentioned on death certificates, either as underlying or as associated causes of death. Epidemiological characteristics, time trends and spatial analysis of STH-related mortality were analysed. STHs was identified on 853/12 491 280 death certificates: 827 (97·0%) deaths related to ascariasis, 25 (2·9%) to hookworm infections, and 1 (0·1%) to trichuriasis...
January 20, 2017: Parasitology
https://www.readbyqxmd.com/read/28095374/human-cytomegalovirus-infection-in-nonimmunocompromised-patients-a-retrospective-analysis-and-review-of-the-literature
#2
Konstantin Zedtwitz-Liebenstein, Magda Diab-Elschahaw, Michael Frass
In a retrospective analysis of patients visiting the Outpatient Department of the Division of Infectious Diseases and Tropical Medicine over a period of 3 years, we found a high incidence of symptomatic nonsevere human cytomegalovirus (HCMV) infection in nonimmunocompromised patients. We present 11 symptomatic cases of HCMV infection in nonimmunocompromised patients with non-life-threatening symptoms like long-lasting depletion, fatigue, and subfebrile fever with or without muscular pain and arthralgia. Although the symptoms were not life-threatening, all of the patients suffered a prolonged duration of the disease until improvement...
January 18, 2017: Intervirology
https://www.readbyqxmd.com/read/28093536/noma-overview-of-a-neglected-disease-and-human-rights-violation
#3
REVIEW
M Leila Srour, Klaas Marck, Denise Baratti-Mayer
Noma is an orofacial gangrene affecting malnourished children and mainly observed in tropical countries, particularly sub-Saharan Africa. Epidemiological data on noma are scarce, but a current estimate of the global incidence is 30,000-40,000 cases per year, with a mortality rate of approximately 85% and a burden of disease calculated to be a loss of 1-10 million disability-adjusted life years. The etiology of noma is multifactorial with malnutrition as an ever present factor, often in combination with concomitant diseases, such as measles, malaria, and human immunodeficiency virus (HIV), and poor oral hygiene...
January 16, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28088326/acute-kidney-injury-due-to-tropical-infectious-diseases-and-animal-venoms-a-tale-of-2-continents
#4
REVIEW
Emmanuel A Burdmann, Vivekanand Jha
South and Southeast Asia and Latin American together comprise 46 countries and are home to approximately 40% of the world population. The sociopolitical and economic heterogeneity, tropical climate, and malady transitions characteristic of the region strongly influence disease behavior and health care delivery. Acute kidney injury epidemiology mirrors these inequalities. In addition to hospital-acquired acute kidney injury in tertiary care centers, these countries face a large preventable burden of community-acquired acute kidney injury secondary to tropical infectious diseases or animal venoms, affecting previously healthy young individuals...
January 11, 2017: Kidney International
https://www.readbyqxmd.com/read/28088105/tectona-grandis-leaf-extract-free-and-associated-with-nanoemulsions-as-a-possible-photosensitizer-of-mouse-melanoma-b16-cell
#5
Cydia de Menezes Furtado, Fernando Sergio Escocio Drumond Viana de Faria, Ricardo Bentes Azevedo, Karen Py-Daniel, Ana Lygia Dos Santos Camara, Jaqueline Rodriguez da Silva, Everton de Holanda Oliveira, Anselmo Fortunato Ruiz Rodriguez, Igor Anatolievich Degterev
Over the past six years we have been studying extracts from tropical, specially Amazon, plants, to search for new sensitizers for photodynamic therapy of cancer and infectious diseases. Tectona grandis is a genus of tropical hardwood trees in the mint family, Lamiaceae. That is native to south and southeast Asia, but since the end of the 20th century is also gaining ground in the Amazon. The present work aims to evaluate the photodynamic potential of hydro-alcoholic extract from Tectona grandis LF leaves (TGE) and the same extract prepared as the oil-water nanoemulsion (TGE-NE) against melanoma B16 F10 cells...
January 5, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28068904/long-term-kinetics-of-zika-virus-rna-and-antibodies-in-body-fluids-of-a-vasectomized-traveller-returning-from-martinique-a-case-report
#6
Guenter Froeschl, Kristina Huber, Frank von Sonnenburg, Hans-Dieter Nothdurft, Gisela Bretzel, Michael Hoelscher, Lothar Zoeller, Matthias Trottmann, Francisco Pan-Montojo, Gerhard Dobler, Silke Woelfel
BACKGROUND: The magnitude of the current Zika virus (ZIKV) epidemic has led to a declaration of a Public Health Emergency of International Concern by the WHO. Findings of viable viral particles in semen for several weeks are corroborating reports of sexual transmission of ZIKV. Serious consequences of a positive diagnostic result particularly in the pregnant patient are calling for precise diagnostic tools also at later time points after infection. Currently, recommendations suggest a diagnostic period of direct viral detection of 5 to 7 days after onset of symptoms in serum or plasma, and up to 3 weeks in urine samples...
January 10, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28054952/computer-aided-drug-design-using-sesquiterpene-lactones-as-sources-of-new-structures-with-potential-activity-against-infectious-neglected-diseases
#7
REVIEW
Chonny Herrera Acevedo, Luciana Scotti, Mateus Feitosa Alves, Margareth De Fátima Formiga Melo Diniz, Marcus Tullius Scotti
This review presents an survey to the biological importance of sesquiterpene lactones (SLs) in the fight against four infectious neglected tropical diseases (NTDs)-leishmaniasis, schistosomiasis, Chagas disease, and sleeping sickness-as alternatives to the current chemotherapies that display several problems such as low effectiveness, resistance, and high toxicity. Several studies have demonstrated the great potential of some SLs as therapeutic agents for these NTDs and the relationship between the protozoal activities with their chemical structure...
January 3, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28054225/spectrum-and-burden-of-neglected-tropical-diseases-observed-in-an-infectious-and-tropical-diseases-unit-in-florence-italy-2000-2015
#8
Lorenzo Zammarchi, Iacopo Vellere, Leonardo Stella, Filippo Bartalesi, Marianne Strohmeyer, Alessandro Bartoloni
Neglected tropical diseases (NTDs) are a diverse group of acute and chronic conditions with distinct characteristics that thrive mainly among the poorest populations, almost exclusively in tropical countries. To evaluate the relevance and impact of NTDs in a temperate area, the number and features of patients diagnosed with NTDs at the Infectious and Tropical Diseases Unit (ITDU), Azienda Ospedaliero-Universitaria Careggi, Florence, Italy between 2000 and 2015 were retrospectively reviewed. Overall 289 NTD cases were diagnosed in 283 subjects accounting for 2...
January 4, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28052493/disassembly-of-a-tadpole-community-by-a-multi-host-fungal-pathogen-with-limited-evidence-of-recovery
#9
Graziella V DiRenzo, Christian Che-Castaldo, Amanda Rugenski, Roberto Brenes, Matt R Whiles, Catherine M Pringle, Susan S Kilham, Karen R Lips
Emerging infectious diseases can cause host community disassembly, but the mechanisms driving the order of species declines and extirpations following a disease outbreak are unclear. We documented the community disassembly of a Neotropical tadpole community during a chytridiomycosis outbreak, triggered by the generalist fungal pathogen, Batrachochytrium dendrobatidis (Bd). Within the first 11 months of Bd arrival, tadpole density and occupancy rapidly declined. Species rarity, in terms of tadpole occupancy and adult relative abundance, did not predict the odds of tadpole occupancy declines...
January 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28036306/infections-with-biological-therapy-strategies-for-risk-minimization-in-tropical-and-developing-countries
#10
Carlos E Pérez-Díaz, Erika Uribe-Pardo, Omar-Javier Calixto, Álvaro A Faccini-Martínez, Alfonso J Rodriguez-Morales
In recent decades, biological therapy has enabled disease activity control and improved quality of life in patients with autoimmune diseases. These therapies that are involved in immune response modifications and change multiple immunological pathways induce an incremental risk for certain infectious diseases. Though there have been recent advances in risk assessment for biological therapy, there is a lack of data and recommendations for assessing risks in populations with high prevalence of infectious diseases, such as those located in tropical areas and developing countries...
December 30, 2016: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/28011960/visceral-leishmaniasis-in-immunocompromised-diagnostic-and-therapeutic-approach-and-evaluation-of-the-recently-released-idsa-guidelines
#11
Pasquale Pagliano, Tiziana Ascione, Giusy Di Flumeri, Giovanni Boccia, Francesco De Caro
Visceral Leishmaniasis (VL) is a chronic infectious disease endemic in tropical and sub-tropical areas including the Mediterranean basin, caused by a group of protozoan parasites of the genus Leishmania and transmitted by phlebotomine sandflies. Typically, VL is classified as a zoonotic infection when Leishmania infantum is the causative agent and as an anthroponotic one when L. donovani is the causative agent. Immunocompromised patients, in particular HIV positive, are considered at risk of VL. They may present atypical signs and poor response to the treatment due to a compromission of T-helper and regulatory cells activity...
1, 2016: Le Infezioni in Medicina
https://www.readbyqxmd.com/read/28005986/a-systematic-review-of-cost-effectiveness-studies-reporting-cost-per-daly-averted
#12
Peter J Neumann, Teja Thorat, Yue Zhong, Jordan Anderson, Megan Farquhar, Mark Salem, Eileen Sandberg, Cayla J Saret, Colby Wilkinson, Joshua T Cohen
INTRODUCTION: Calculating the cost per disability-adjusted life years (DALYs) averted associated with interventions is an increasing popular means of assessing the cost-effectiveness of strategies to improve population health. However, there has been no systematic attempt to characterize the literature and its evolution. METHODS: We conducted a systematic review of cost-effectiveness studies reporting cost-per-DALY averted from 2000 through 2015. We developed the Global Health Cost-Effectiveness Analysis (GHCEA) Registry, a repository of English-language cost-per-DALY averted studies indexed in PubMed...
2016: PloS One
https://www.readbyqxmd.com/read/28005910/melioidosis-in-malaysia-a-review-of-case-reports
#13
Paul Vijay Kingsley, Mark Leader, Nandika Suranjith Nagodawithana, Meghan Tipre, Nalini Sathiakumar
BACKGROUND: Melioidosis is a tropical infectious disease associated with significant mortality due to early onset of sepsis. OBJECTIVE: We sought to review case reports of melioidosis from Malaysia. METHODS: We conducted a computerized search of literature resources including PubMed, OVID, Scopus, MEDLINE and the COCHRANE database to identify published case reports from 1975 to 2015. We abstracted information on clinical characteristics, exposure history, comorbid conditions, management and outcome...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28003338/a-predicted-cation-transporter-protein-bpss1228-is-involved-in-intracellular-behaviour-of-burkholderia-pseudomallei-in-a-human-lung-epithelial-cell-line-a549
#14
Teerasit Techawiwattanaboon, Sorujsiri Chareonsudjai
Burkholderia pseudomallei causes melioidosis, a potentially fatal infectious disease in tropical and subtropical countries worldwide. The intracellular behaviour of this pathogen in host cells has been reported to impact the severity of melioidosis, including the development of septicaemia, a consequence of pneumonia melioidosis. We previously identified a predicted cation transporter protein, BPSS1228, that participates in the transitional stage of this intracellular pathogen. For further analysis, in this study B...
December 2016: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/27992422/role-of-t3ss-1-sipd-protein-in-protecting-mice-against-non-typhoidal-salmonella-typhimurium
#15
Bakhos Jneid, Karine Moreau, Marc Plaisance, Audrey Rouaix, Julie Dano, Stéphanie Simon
BACKGROUND: Salmonella enterica species are enteric pathogens that cause severe diseases ranging from self-limiting gastroenteritis to enteric fever and sepsis in humans. These infectious diseases are still the major cause of morbidity and mortality in low-income countries, especially in children younger than 5 years and immunocompromised adults. Vaccines targeting typhoidal diseases are already marketed, but none protect against non-typhoidal Salmonella. The existence of multiple non-typhoidal Salmonella serotypes as well as emerging antibiotic resistance highlight the need for development of a broad-spectrum protective vaccine...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27973528/modelling-vaccination-strategies-against-rift-valley-fever-in-livestock-in-kenya
#16
John M Gachohi, M Kariuki Njenga, Philip Kitala, Bernard Bett
BACKGROUND: The impacts of vaccination on the transmission of Rift Valley fever virus (RVFV) have not been evaluated. We have developed a RVFV transmission model comprising two hosts-cattle as a separate host and sheep and goats as one combined host (herein after referred to as sheep)-and two vectors-Aedes species (spp) and Culex spp-and used it to predict the impacts of: (1) reactive vaccination implemented at various levels of coverage at pre-determined time points, (2) targeted vaccination involving either of the two host species, and (3) a periodic vaccination implemented biannually or annually before an outbreak...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27960617/nuclear-dna-replication-and-repair-in-parasites-of-the-genus-leishmania-exploiting-differences-to-develop-innovative-therapeutic-approaches
#17
Graciela Uzcanga, Eliana Lara, Fernanda Gutiérrez, Doyle Beaty, Timo Beske, Rommy Teran, Juan-Carlos Navarro, Philippe Pasero, Washington Benítez, Ana Poveda
Leishmaniasis is a common tropical disease that affects mainly poor people in underdeveloped and developing countries. This largely neglected infection is caused by Leishmania spp, a parasite from the Trypanosomatidae family. This parasitic disease has different clinical manifestations, ranging from localized cutaneous to more harmful visceral forms. The main limitations of the current treatments are their high cost, toxicity, lack of specificity, and long duration. Efforts to improve treatments are necessary to deal with this infectious disease...
December 14, 2016: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/27957534/deforestation-driven-food-web-collapse-linked-to-emerging-tropical-infectious-disease-mycobacterium-ulcerans
#18
Aaron L Morris, Jean-François Guégan, Demetra Andreou, Laurent Marsollier, Kevin Carolan, Marie Le Croller, Daniel Sanhueza, Rodolphe E Gozlan
Generalist microorganisms are the agents of many emerging infectious diseases (EIDs), but their natural life cycles are difficult to predict due to the multiplicity of potential hosts and environmental reservoirs. Among 250 known human EIDs, many have been traced to tropical rain forests and specifically freshwater aquatic systems, which act as an interface between microbe-rich sediments or substrates and terrestrial habitats. Along with the rapid urbanization of developing countries, population encroachment, deforestation, and land-use modifications are expected to increase the risk of EID outbreaks...
December 2016: Science Advances
https://www.readbyqxmd.com/read/27941151/diagnosis-and-treatment-of-leishmaniasis-clinical-practice-guidelines-by-the-infectious-diseases-society-of-america-idsa-and-the-american-society-of-tropical-medicine-and-hygiene-astmh
#19
Naomi Aronson, Barbara L Herwaldt, Michael Libman, Richard Pearson, Rogelio Lopez-Velez, Peter Weina, Edgar M Carvalho, Moshe Ephros, Selma Jeronimo, Alan Magill
It is important to realize that leishmaniasis guidelines cannot always account for individual variation among patients. They are not intended to supplant physician judgment with respect to particular patients or special clinical situations. The IDSA and ASTMH consider adherence to these guidelines to be voluntary, with the ultimate determinations regarding their application to be made by the physician in the light of each patient's individual circumstances.
December 15, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27941143/diagnosis-and-treatment-of-leishmaniasis-clinical-practice-guidelines-by-the-infectious-diseases-society-of-america-idsa-and-the-american-society-of-tropical-medicine-and-hygiene-astmh
#20
Naomi Aronson, Barbara L Herwaldt, Michael Libman, Richard Pearson, Rogelio Lopez-Velez, Peter Weina, Edgar M Carvalho, Moshe Ephros, Selma Jeronimo, Alan Magill
It is important to realize that leishmaniasis guidelines cannot always account for individual variation among patients. They are not intended to supplant physician judgment with respect to particular patients or special clinical situations. The IDSA and ASTMH consider adherence to these guidelines to be voluntary, with the ultimate determinations regarding their application to be made by the physician in the light of each patient's individual circumstances.
December 15, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
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