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Tropical infectious disease

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https://www.readbyqxmd.com/read/28224222/immunopathological-characterization-of-human-cutaneous-leishmaniasis-lesions-caused-by-leishmania-viannia-spp-in-amazonian-brazil
#1
Cláudia Maria Castro Gomes, Maria Gloria Teixeira Sousa, Joyce Prieto Bezerra Menezes, Marliane Campos Batista, Ana Carolina Stocco Lima, Walter Belda, Daniel Bradshaw, Monica Elinor Alves Gama, Márcia Dalastra Laurenti, Fernando Tobias Silveira, Carlos Eduardo Pereira Corbett
American cutaneous leishmaniasis (ACL) is a chronic infectious disease caused by different protozoan species of Leishmania, and it is endemic in both tropical and subtropical countries. Using immunohistochemistry, we investigate the density of CD68(+), lysozyme(+), CD1a(+), factor XIIIa(+), CD4(+), CD8(+), CD56(+), interferon (IFN)-γ(+), and inducible NO synthase (iNOS(+)) cells. These cells were analyzed from 22 biopsy samples obtained from the lesions of ACL patients, whose infection was caused by Leishmania (Viannia) spp...
February 21, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28220322/serious-fungal-infections-in-the-philippines
#2
M C R Batac, D Denning
The Philippines is a low middle-income, tropical country in Southeast Asia. Infectious diseases remain the main causes of morbidity, including tuberculosis. AIDS/HIV prevalence is still low at <1%, but is rapidly increasing. Fungal disease surveillance has not been done, and its burden has never been estimated. This becomes more important as the population of immunocompromised patients increases, drawn from patients with AIDS, TB, malignancies, and autoimmune diseases requiring chronic steroid use. Using the methodology of the LIFE program ( www...
February 21, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28219407/development-of-dirofilaria-immitis-and-dirofilaria-repens-in-aedes-japonicus-and-aedes-geniculatus
#3
Cornelia Silaghi, Relja Beck, Gioia Capelli, Fabrizio Montarsi, Alexander Mathis
BACKGROUND: The mosquito-borne filarial nematodes Dirofilaria immitis and Dirofilaria repens primarily affect dogs but also cats, causing heartworm disease or subcutaneous dirofilariosis, respectively, and both may also cause zoonotic diseases in humans. Several mosquito species have been reported as competent vectors for these nematodes, but no data are available for the invasive mosquito species Aedes japonicus (Theobald, 1901). The objective of this study was to describe the development of both D...
February 20, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28212398/modelling-the-risk-of-taenia-solium-exposure-from-pork-produced-in-western-kenya
#4
Lian F Thomas, William A de Glanville, Elizabeth A J Cook, Barend M De C Bronsvoort, Ian Handel, Claire N Wamae, Samuel Kariuki, Eric M Fèvre
The tapeworm Taenia solium is the parasite responsible for neurocysticercosis, a neglected tropical disease of public health importance, thought to cause approximately 1/3 of epilepsy cases across endemic regions. The consumption of undercooked infected pork perpetuates the parasite's life-cycle through the establishment of adult tapeworm infections in the community. Reducing the risk associated with pork consumption in the developing world is therefore a public health priority. The aim of this study was to estimate the risk of any one pork meal in western Kenya containing a potentially infective T...
February 17, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28211266/-non-febrile-syndromes-in-the-traveler-returning-from-tropical-regions-admitted-in-a-monographic-unit
#5
A Anula-Morales, B Martin-Giner, M Hernández-Cabrera, C Carranza-Rodríguez, E Pisos-Álamo, N Jaén-Sánchez, J L Pérez-Arellano
OBJECTIVE: The aim was to analyse those syndromes without fever in travellers who return from tropical regions evaluated at our Department of Infectology and Tropical Medicine. Clarifying these conditions intends to reach earlier diagnoses and, perhaps, to avoid the emergence and spread of imported diseases, as well as to establish appropriate preventive measures. METHODS: An observational descriptive transversal study was performed, selecting those patients who returned from tropical regions without fever (n = 281), amongst all travellers evaluated in our department between 1998 and 2013...
February 17, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/28188440/pathology-of-infectious-diseases-what-does-the-future-hold
#6
REVIEW
Paul Hofman, Sebastian Lucas, Grégory Jouvion, Arnault Tauziède-Espariat, Fabrice Chrétien, Gieri Cathomas
The demand for expertise in pathology for the diagnosis of infectious diseases (ID) is continually growing, due to an increase in ID in immunocompromised patients and in the (re)-emergence of common and uncommon diseases, including tropical infections and infections with newly identified microbes. The microbiology laboratory plays a crucial role in diagnosing infections, identifying the responsible infectious agents and establishing sensitivity of pathogens to drug therapy. Pathology, however, is the only way to correlate the presence of an infectious agent with the reaction it evokes at cell and tissue level...
February 10, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28182664/improving-our-forecasts-for-trachoma-elimination-what-else-do-we-need-to-know
#7
Amy Pinsent, Manoj Gambhir
The World Health Organization (WHO) has targeted trachoma for elimination as a public health concern by 2020. Mathematical modelling is used for a range of infectious diseases to assess the impact of different intervention strategies on the prevalence of infection or disease. Here we evaluate the performance of four different mechanistic mathematical models that could all realistically represent trachoma transmission. We fit the four different mechanistic models of trachoma transmission to cross-sectional age-specific Polymerase Chain Reaction (PCR) and Trachomatous inflammation, follicular (TF) prevalence data...
February 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28176029/summarizing-us-wildlife-trade-with-an-eye-toward-assessing-the-risk-of-infectious-disease-introduction
#8
K M Smith, C Zambrana-Torrelio, A White, M Asmussen, C Machalaba, S Kennedy, K Lopez, T M Wolf, P Daszak, D A Travis, W B Karesh
The aim of this study was to characterize the role of the USA in the global exchange of wildlife and describe high volume trade with an eye toward prioritizing health risk assessment questions for further analysis. Here we summarize nearly 14 years (2000-2013) of the most comprehensive data available (USFWS LEMIS system), involving 11 billion individual specimens and an additional 977 million kilograms of wildlife. The majority of shipments contained mammals (27%), while the majority of specimens imported were shells (57%) and tropical fish (25%)...
February 7, 2017: EcoHealth
https://www.readbyqxmd.com/read/28167862/mycetoma-in-a-non-endemic-area-a-diagnostic-challenge
#9
Boubacar Efared, Layla Tahiri, Marou Soumana Boubacar, Gabrielle Atsam-Ebang, Nawal Hammas, El Fatemi Hinde, Laila Chbani
BACKGROUND: Mycetoma is a chronic granulomatous infectious disease caused by filamentous bacteria or by fungi. The disease is endemic in certain tropical and subtropical areas of the world but can be found elsewhere posing sometimes a diagnostic challenge for clinicians. CASE PRESENTATION: A 65-year- old man presented with a right foot swelling evolving for 25 years. During that time, several diagnosis and treatments have been made without any improvement. The disease spread to bones, and misdiagnosed as Kaposi's sarcoma...
2017: BMC Clinical Pathology
https://www.readbyqxmd.com/read/28146100/echovirus-6-infects-human-exocrine-and-endocrine-pancreatic-cells-and-induces-pro-inflammatory-innate-immune-response
#10
Luis Sarmiento, Gun Frisk, Mahesh Anagandula, Monika Hodik, Ilaria Barchetta, Eitan Netanyah, Eduardo Cabrera-Rode, Corrado M Cilio
Human enteroviruses (HEV), especially coxsackievirus serotype B (CVB) and echovirus (E), have been associated with diseases of both the exocrine and endocrine pancreas, but so far evidence on HEV infection in human pancreas has been reported only in islets and ductal cells. This study aimed to investigate the capability of echovirus strains to infect human exocrine and endocrine pancreatic cells. Infection of explanted human islets and exocrine cells with seven field strains of E6 caused cytopathic effect, virus titer increase and production of HEV protein VP1 in both cell types...
January 30, 2017: Viruses
https://www.readbyqxmd.com/read/28145455/m48u1-and-tenofovir-combination-synergistically-inhibits-hiv-infection-in-activated-pbmcs-and-human-cervicovaginal-histocultures
#11
Giuseppina Musumeci, Isabella Bon, David Lembo, Valeria Cagno, Maria Carla Re, Caterina Signoretto, Erica Diani, Lucia Lopalco, Claudia Pastori, Loïc Martin, Gilles Ponchel, Davide Gibellini, Kawthar Bouchemal
Microbicides are considered a promising strategy for preventing human immunodeficiency virus (HIV-1) transmission and disease. In this report, we first analyzed the antiviral activity of the miniCD4 M48U1 peptide formulated in hydroxyethylcellulose (HEC) hydrogel in activated peripheral blood mononuclear cells (PBMCs) infected with R5- and X4-tropic HIV-1 strains. The results demonstrate that M48U1 prevented infection by several HIV-1 strains including laboratory strains, and HIV-1 subtype B and C strains isolated from the activated PBMCs of patients...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28137237/model-systems-for-pulmonary-infectious-diseases-paradigms-of-anthrax-and-tuberculosis
#12
Gunjan Arora, Richa Misra, Andaleeb Sajid
Robert Koch utilized animal model systems to put forward his postulates while discovering the etiological agents of anthrax and tuberculosis, Bacillus anthracis and Mycobacterium tuberculosis, respectively. After more than 130 years, we have achieved limited success towards understanding these two pestilences, which have propagated as scourge against humans. B. anthracis and M. tuberculosis are diverse organisms, which share a common evolutionary path in tropics. They adapt unique strategies to overcome unfavorable conditions and surpass the host defense mechanisms...
January 30, 2017: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/28129759/demography-maternal-health-and-the-epidemiology-of-malaria-and-other-major-infectious-diseases-in-the-rural-department-tsamba-magotsi-ngounie-province-in-central-african-gabon
#13
R Zoleko Manego, G Mombo-Ngoma, M Witte, J Held, M Gmeiner, T Gebru, B Tazemda, J Mischlinger, M Groger, B Lell, A A Adegnika, S T Agnandji, P G Kremsner, B Mordmüller, M Ramharter, P B Matsiegui
BACKGROUND: Sub-Saharan Africa is undergoing an epidemiological transition from a predominance of infectious diseases to non-communicable and lifestyle related conditions. However, the pace of this transition and the pattern of disease epidemiology are uneven between affluent urban and rural poor populations. To address this question for a remote rural region located in the central African rainforest region of Gabon, this study was conducted to assess reasons for health care attendance and to characterize the epidemiology of malaria and other major infectious diseases for the department of Tsamba Magotsi...
January 28, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28122550/developing-medical-education-capacity-in-russia-twenty-years-of-experience
#14
Bulat A Ziganshin, Mitra Sadigh, Liliya M Yausheva, Anna P Ziganshina, Arseniy A Pichugin, Alexey S Sozinov, Nail Kh Amirov, Asghar Rastegar, Ayrat U Ziganshin, Majid Sadigh
BACKGROUND: The partnership between Yale University (USA) and Kazan State Medical University (KSMU, Russia) was established in 1996 and transitioned to Western Connecticut Health Network (WCHN)/University of Vermont Robert Larner, M.D. College of Medicine (USA) in 2012 with the goal of modernizing medical education at KSMU primarily through introduction of the American medical education structure, role modeling, and educational capacity building. It was centered on the formation of a select group of Russian junior faculty members familiar with American medical education who would then initiate a gradual change in medical education at KSMU...
January 25, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/28108201/-fluconazole-1200mg-or-800mg-for-cryptococcal-meningitis-treatment-in-ivory-coast
#15
G A Kouakou, N F Ello, N A Kassi, M Keita, A Doumbia, C Mossou, F K Kassi, A Tanon, E Ehui, S P Eholié
OBJECTIVE: Assessing the use of high-dose fluconazol monotherapy (1200mg or 800mg) in the treatment and prognosis of HIV-associated cryptococcal meningitis in Ivory Coast. PATIENTS AND METHODS: A retrospective study carried out from August 2008 to August 2011 based on patients charts suffering from CM in the Abidjan Tropicals and Infectious Disease Unit. Mortality rate and associated factors were analyzed. RESULTS: Forty-six cases of cryptococcal meningitis (2...
January 17, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28103964/epidemiology-of-soil-transmitted-helminthiases-related-mortality-in-brazil
#16
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
#17
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...
2016: Intervirology
https://www.readbyqxmd.com/read/28093536/noma-overview-of-a-neglected-disease-and-human-rights-violation
#18
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...
February 8, 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
#19
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
#20
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
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