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visceral leishmaniasis

Fernando J Andrade-Narvaez, Elsy Nalleli Loría-Cervera, Erika I Sosa-Bibiano, Nicole R Van Wynsberghe
American cutaneous leishmaniasis (ACL) is a major public health problem caused by vector-borne protozoan intracellular parasites from the genus Leishmania, subgenera Viannia and Leishmania. Asymptomatic infection is the most common outcome after Leishmania inoculation. There is incomplete knowledge of the biological processes explaining the absence of signs or symptoms in most cases while other cases present a variety of clinical findings. Most studies of asymptomatic infection have been conducted in areas of endemic visceral leishmaniasis...
October 2016: Memórias do Instituto Oswaldo Cruz
K S Rock, R J Quinnell, G F Medley, O Courtenay
The leishmaniases comprise a complex of diseases characterized by clinical outcomes that range from self-limiting to chronic, and disfiguring and stigmatizing to life threatening. Diagnostic methods, treatments, and vector and reservoir control options exist, but deciding the most effective interventions requires a quantitative understanding of the population level infection and disease dynamics. The effectiveness of any set of interventions has to be determined within the context of operational conditions, including economic and political commitment...
2016: Advances in Parasitology
Ruixue Miao, Zhiling Wang, Qin Guo, Yang Wen, Qiong Liao, Yu Zhu, Min Shu, Chaomin Wan
BACKGROUND: Visceral Leishmaniasis (VL) is a life-threatening parasitic infection transmitted by phlebotomine sandflies. We undertook this study to analyze the clinical features of pediatric VL in a population of Chinese children. METHODS: A retrospective study was performed with pediatric patients (≤14years) diagnosed with VL based on bone-marrow biopsy, serology and diagnosis based on clinical manifestation and the improvement after the experimental drug when negative bone marrow and serology results were shown...
September 30, 2016: Pediatric Infectious Disease Journal
C Cossart, G Le Moal, M Garcia, E Frouin, E Hainaut-Wierzbicka, F Roblot
BACKGROUND: Visceral leishmaniasis is not normally expressed in skin. Herein, we describe the case of an HIV-positive patient who developed two unusual skin manifestations during an episode of visceral leishmaniasis. PATIENTS AND METHODS: A 48-year-old female patient consulted initially for infiltrated purpura of all four limbs. Skin biopsy revealed leukocytoclastic vasculitis with Leishman-Donovan bodies. Laboratory tests showed medullary, splenic, gastric and colic involvement, suggesting systemic disease, and enabling visceral leishmaniasis to be diagnosed...
October 11, 2016: Annales de Dermatologie et de Vénéréologie
Sarfaraz Ahmad Ejazi, Pradyot Bhattacharya, Md Asjad Karim Bakhteyar, Aquil Ahmad Mumtaz, Krishna Pandey, Vidya Nand Ravi Das, Pradeep Das, Mehebubar Rahaman, Rama Prosad Goswami, Nahid Ali
BACKGROUND: Visceral Leishmaniasis (VL), a severe parasitic disease, could be fatal if diagnosis and treatment is delayed. Post kala-azar dermal leishmaniasis (PKDL), a skin related outcome, is a potential reservoir for the spread of VL. Diagnostic tests available for VL such as tissue aspiration are invasive and painful although they are capable of evaluating the treatment response. Serological tests although less invasive than tissue aspiration are incompetent to assess cure. Parasitological examination of slit-skin smear along with the clinical symptoms is routinely used for diagnosis of PKDL...
October 2016: PLoS Neglected Tropical Diseases
V Sharath Kumar, Sanjeevan Sharma
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
Pilar Hernández-Jiménez, Carmen Díaz-Pedroche, Jaime Laureiro, Olaya Madrid, Estela Martín, Carlos Lumbreras
BACKGROUND AND OBJECTIVE: Hemophagocytic lymphohistiocytosis (HLH) is a serious condition, caused by an improper regulation of the immune response to different stimuli of the immune system. Early diagnosis and treatment are a challenge for the clinician. PATIENTS AND METHOD: We conducted a retrospective study at our institution between 2010 and 2015, of adult patients diagnosed with HLH, in accordance with the criteria of the Histiocyte Society, analyzing their clinical characteristics, diagnostic and etiological studies and the outcome...
October 7, 2016: Medicina Clínica
Aschalew Tamiru, Bethlehem Tigabu, Sisay Yifru, Ermias Diro, Asrat Hailu
BACKGROUND: Visceral leishmaniasis (VL) is a protozoan disease that is invariably fatal if left untreated. The disease is found in 70 countries with incidence of 0.2 - 0.4 million cases. The mainstay of treatment in resource limited countries like Ethiopia is antimonials, while use of liposomal amphotericin B is reserved for treatment of complicated VL cases. The aim of this study was to assess the safety and efficacy of liposomal amphotericin B in HIV negative VL patients diagnosed with complications...
October 10, 2016: BMC Infectious Diseases
Partha Pratim Bose, Prakash Kumar
Visceral leishmaniasis is a neglected tropical disease and may prove fatal if not diagnosed and treated early. The amastigotes of Leishmania donovani nest in the macrophage of human host and thus, determination of parasitic burden in the infected macrophages has been the most crucial step in diagnosis, dose determination and medical management of relapse cases of this fatal disease. Microscopic count following Giemsa staining and other morphological analysis are the classical ways vastly used in the resource stringent endemic areas...
October 5, 2016: Biochemical and Biophysical Research Communications
M Mamun Huda, Vijay Kumar, Murari Lal Das, Debashis Ghosh, Jyoti Priyanka, Pradeep Das, Abdul Alim, Greg Matlashewski, Axel Kroeger, Eduardo Alfonso-Sierra, Dinesh Mondal
BACKGROUND: New methods for controlling sand fly are highly desired by the Visceral Leishmaniasis (VL) elimination program of Bangladesh, India and Nepal for its consolidation and maintenance phases. To support the program we investigated safety, efficacy and cost of Durable Wall Lining to control sand fly. METHODS: This multicentre randomized controlled study in Bangladesh, India and Nepal included randomized two intervention clusters and one control cluster. Each cluster had 50 households except full wall surface coverage (DWL-FWSC) cluster in Nepal which had 46 households...
October 6, 2016: BMC Infectious Diseases
Rômulo Pessoa-E-Silva, Lays Adrianne Mendonça Trajano-Silva, Maria Almerice Lopes da Silva, Suênia da Cunha Gonçalves-de-Albuquerque, Tayná Correia de Goes, Rayana Carla Silva de Morais, Fábio Lopes de Melo, Milena de Paiva-Cavalcanti
The availability of some sorts of biological samples which require noninvasive collection methods has led to an even greater interest in applying molecular biology on visceral leishmaniasis (VL) diagnosis, since these samples increase the safety and comfort of both patients and health professionals. In this context, this work aimed to evaluate the suitability of the urine as a specimen for Leishmania infantum kinetoplast DNA detection by real-time quantitative PCR (qPCR). Subsequent to the reproducibility analysis, the detection limit of the qPCR assay was set at 5fg (~0...
October 3, 2016: Journal of Microbiological Methods
T N A Oliveira, P E B Guedes, G B Souza, F S Carvalho, R S Alberto Carlos, G R Albuquerque, A D Munhoz, F L Silva
Leishmaniasis is a disease caused by protozoa of the genus Leishmania. Two distinct forms are recognized: visceral leishmaniasis (VL) and cutaneous leishmaniasis (CL). In the Americas, the causative agent of VL is L. infantum chagasi, whereas L. braziliensis is principally responsible for CL. Domestic dogs constitute the main source of VL in urban environments, and have also been implicated in CL epidemiology. We carried out molecular and serological surveys to detect Leishmania infection in dogs from the municipality of Ituberá in Bahia, Brazil...
September 2, 2016: Genetics and Molecular Research: GMR
Oscar Daniel Salomón, Andrea Verónica Mastrángelo, María Soledad Santini, Domingo Javier Liotta, Zaida Estela Yadón
A retrospective analytical method is presented, based on theoretical eco-epidemiology, applied on a subnational spatial scale. This method was used here to describe scenarios for the transmission of leishmaniasis in the Argentine province of Misiones- bordering Brazil and Paraguay-and formed the basis for recommendations for surveillance and control appropriate to the subnational scale. An exhaustive search of the literature on leishmaniasis in the province was carried out. Three scenarios for the transmission of cutaneous leishmaniasis (CL) and visceral leishmaniasis (VL) were found, corresponding to three periods: from 1920 to 1997, during which the transmission of CL distributed over time and space was confirmed; 1998 to 2005, during which there were focal outbreaks of CL; and 2006 to 2014, during which outbreaks were also reported and the geographical dispersion of VL was documented...
August 2016: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
Ayse Sayili, Aysegul Taylan Ozkan, Henk D F H Schallig
Visceral leishmaniasis (VL) is a vector-borne disease widespread in the Mediterranean basin, including Cyprus. During the last decades no cases were notified from northern Cyprus, but herein three cases of VL (female: 2, male: 1, median age: 24.6 months) diagnosed during their hospital admission between January 2011 and December 2012 are reported. Diagnosis was based on clinical findings; 1 ≥ 1/64 titer positivity of immunofluorescence antibodies, Leishmania amastigotes in Giemsa-stained slides of bone marrow, as well as molecular identification confirmed that in all three the infecting pathogen was Leishmania infantum Fever, splenomegaly, and hepatomegaly were the typical clinical findings...
October 3, 2016: American Journal of Tropical Medicine and Hygiene
Alicia Castro, Eugenia Carrillo, Juan V San Martín, Laura Botana, Laura Molina, Belén Matía, Laura Fernandez, Luis Horrillo, Ana Ibarra-Meneses, Carmen Sanchez, Jose M Ruiz-Giardin, Javier Moreno
The introduction of HAART resulted in the decrease of Leishmania/HIV co-infection cases; nevertheless, the number of relapses remains high and secondary prophylaxis is recommended. However, secondary prophylaxis is not necessary in all patients, and presents a high risk of toxicity and an elevated cost. Our aim was to study whether specific cellular response to Leishmania infantum (measured by cell proliferation response after stimulation with soluble Leishmania antigen (SLA)), could be a useful tool to attempt a secondary prophylaxis withdrawal...
September 28, 2016: Acta Tropica
Om Prakash Singh, Epco Hasker, Marleen Boelaert, Shyam Sundar
Visceral leishmaniasis is a serious public health problem on the Indian subcontinent, causing high morbidity and mortality. The governments in the region launched a visceral leishmaniasis elimination initiative in 2005. We review knowledge gaps and research priorities. Key challenges include low coverage of health services for those most at risk, drug resistance, the absence of a vaccine, and the complex biology of the sandfly-human host transmission cycle. Vector control is an essential component, but innovation in this field is insufficient...
September 28, 2016: Lancet Infectious Diseases
Niyamat A Siddiqui, Vidya N Rabidas, Sanjay K Sinha, Rakesh B Verma, Krishna Pandey, Vijay P Singh, Alok Ranjan, Roshan K Topno, Chandra S Lal, Vijay Kumar, Ganesh C Sahoo, Srikantaih Sridhar, Arvind Pandey, Pradeep Das
BACKGROUND: Visceral Leishmaniasis, commonly known as kala-azar, is widely prevalent in Bihar. The National Kala-azar Control Program has applied house-to-house survey approach several times for estimating Kala-azar incidence in the past. However, this approach includes huge logistics and operational cost, as occurrence of kala-azar is clustered in nature. The present study aims to compare efficiency, cost and feasibility of snowball sampling approach to house-to-house survey approach in capturing kala-azar cases in two endemic districts of Bihar, India...
September 2016: PLoS Neglected Tropical Diseases
Tadesse Hailu, Mulat Yimer, Wondemagegn Mulu, Bayeh Abera
Leishmaniasis is a disease caused by an obligate intracellular protozoan that affects animals and human. Transmission is zoonotic and/or anthroponotic through the bite of an infected female sandfly. Control and elimination of visceral leishmaniasis (VL) require proper case detection, identification of reservoir hosts, and launching of effective vector control strategies in endemic areas. The aim of this review was to highlight the challenges in VL control in developing countries. Literatures pertaining to VL burden, diagnosis, prevention and control from the year 1969 to 2014 were systematically reviewed from PubMed, Scopus, Medline and Google scholar sources during July 2015...
July 2016: Journal of Vector Borne Diseases
M de Wild, F H Wiersma, T F W Wolfs, P M van Hasselt
BACKGROUND: Cutaneous leishmaniasis is rare in the Netherlands, but it is endemic to Syria. The disease can manifest itself many years after initial exposure. Given the arrival of Syrian refugees in the Netherlands, awareness of this disease entity is warranted. CASE DESCRIPTION: A 5-year-old boy from Syria had investigations for hepatosplenomegaly. As an incidental finding a solitary, moderately demarcated, erythematous plaque was noted on his right cheek. It measured 4 × 2 cm and had a central haemorrhagic, exudative, honey-yellow slough...
2016: Nederlands Tijdschrift Voor Geneeskunde
Md Golam Hasnain, Mohammad Sohel Shomik, Prakash Ghosh, Mamun Or Rashid, Md Shakhawat Hossain, Shinjiro Hamano, Dinesh Mondal
Post-kala-azar dermal leishmaniasis (PKDL) without previous visceral leishmaniasis (VL) is a rare dermatological manifestation of Leishmania infection. To date, most of the reported cases neither showed parasitological confirmation nor explained the outcome of treatment. Herein, we report three confirmed cases that were were successfully cured after miltefosine treatment.
September 26, 2016: American Journal of Tropical Medicine and Hygiene
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