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leishmania diagnosis

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https://www.readbyqxmd.com/read/28191297/leishmania-infantum-and-epstein-barr-virus-co-infection-in-a-patient-with-hemophagocytosis
#1
Zied Gaifer, Mohamed-Rachid Boulassel
The authors describe a rare case of a 27- year old previously healthy male presenting with high grade fever, pancytopenia, hepatosplenomegaly, high levels of ferritin and triglyceride, suggesting a diagnosis of hemophagocytic lymphohistiocytosis (HLH) syndrome. Other investigations showed a positive Leishmania infantum serology and high Epstein-Barr virus (EBV) viremia. The diagnosis of a visceral leishmaniasis was confirmed by bone morrow biopsy, which showed Leishman-Donovan bodies and evidence of HLH. The patient received liposomal amphotericin B and he had a complete resolution of his symptoms and clearance of EBV viremia...
December 31, 2016: Infectious Disease Reports
https://www.readbyqxmd.com/read/28167253/is-leishmania-viannia-braziliensis-parasite-load-associated-with-disease-pathogenesis
#2
Luiza de Oliveira Ramos Pereira, Regina Barbosa Moreira, Márcia Pereira de Oliveira, Soraya de Oliveira Reis, Manoel Paes de Oliveira Neto, Claude Pirmez
BACKGROUND: Leishmania (Viannia) braziliensis is the main etiological agent of tegumentary leishmaniasis in the Americas. Parasite molecular diversity and host immune status contribute to extensive variations in its clinical presentation within endemic areas of Brazil. Pentavalent antimonials have been used for more than 60 years as the first-line drug for all cases, despite the potential for severe side effects and refractoriness. In Rio de Janeiro, Brazil, most L. (V.) braziliensis infections are benign with a scarcity of parasites, although metastasis and refractory infections can arise...
February 3, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28163725/development-and-validation-of-a-pcr-elisa-for-the-diagnosis-of-symptomatic-and-asymptomatic-infection-by-leishmania-leishmania-infantum
#3
Fernanda Alvarenga Cardoso Medeiros, Luciana Inácia Gomes, Edward Oliveira, Carolina Senra Alves de Souza, Maria Vitória Mourão, Gláucia Fernandes Cota, Letícia Helena Dos Santos Marques, Mariângela Carneiro, Ana Rabello
A kDNA PCR enzyme-linked immunosorbent assay (kDNA PCR-ELISA) for the diagnosis of human visceral leishmaniasis (HVL) was developed. The detection limit of the reaction, precision measurements, and cut-off of the kDNA PCR-ELISA were defined in a proof-of-concept phase. A reference strain of Leishmania (Leishmania) infantum and a bank of 14 peripheral blood samples from immunocompetent patients with VL were characterized using techniques considered gold standards, and 11 blood samples obtained from healthy individuals of an endemic area were also assessed...
2017: Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28159546/leishmania-infections-molecular-targets-and-diagnosis
#4
REVIEW
Mohammad Akhoundi, Tim Downing, Jan Votýpka, Katrin Kuhls, Julius Lukeš, Arnaud Cannet, Christophe Ravel, Pierre Marty, Pascal Delaunay, Mohamed Kasbari, Bruno Granouillac, Luigi Gradoni, Denis Sereno
Progress in the diagnosis of leishmaniases depends on the development of effective methods and the discovery of suitable biomarkers. We propose firstly an update classification of Leishmania species and their synonymies. We demonstrate a global map highlighting the geography of known endemic Leishmania species pathogenic to humans. We summarize a complete list of techniques currently in use and discuss their advantages and limitations. The available data highlights the benefits of molecular markers in terms of their sensitivity and specificity to quantify variation from the subgeneric level to species complexes, (sub) species within complexes, and individual populations and infection foci...
January 31, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28124961/-investigation-of-cutaneous-leishmaniasis-by-active-screening-in-primary-schools-in-sanliurfa-turkey
#5
Nebiye Yentür Doni, Gülcan Gürses, Reşat Dikme, Zeynep Şimşek, Mehmet Muratoğlu, Fadile Yıldız Zeyrek, Yavuz Yeşilova
Cutaneous leishmaniasis (CL) is endemic in Sanliurfa, a province located at southestern part of Turkey. The aims of this study were to determine CL cases among children aged 7-15 years attending primary schools and evaluate the demographical and clinical characteristics by active screening method. In our study, a total of 163.464 children attending to 123 primary schools have been evaluated in terms of CL prevalence between 2010 to 2012 period. Accordingly, 67.585, 72.279 and 23.600 students studying in 74, 37 and 12 primary schools were actively screened, respectively...
October 2016: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28122496/lip-leishmaniasis-a-case-series-with-molecular-identification-and-literature-review
#6
Iraj Mohammadpour, Mohammad Hossein Motazedian, Farhad Handjani, Gholam Reza Hatam
BACKGROUND: Mucocutaneous leishmaniasis (MCL), a protozoan infectious disease, is very rare in Iran despite the endemicity of both cutaneous and visceral forms. It is transmitted by the Phlebotomus sand fly. The lip is considered one of the extraordinary sites. Lesions usually initiate with erythematous papules, slowly enlarges and then it ulcerates. The diagnosis of MCL encompasses epidemiological, clinical and laboratory aspects. Usually, the combination of some of these elements is necessary for the final diagnosis...
January 25, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28115678/elimination-of-kala-azar-from-the-southeast-asia-region
#7
Sujit K Bhattacharya, Aditya Prasad Dash
Visceral leishmaniasis (VL), popularly known as kala-azar, is essentially a disease of poverty. Kala-azar is caused by a parasite, Leishmania donovani Recent review indicates that worldwide 98 countries are endemic for kala-azar. Approximately 0.2-0.4 million new VL cases occur each year worldwide. More than 90% of global VL cases occur in Bangladesh, Brazil, Ethiopia, India, South Sudan, and Sudan. This trend is slowly changing due to the progress in kala-azar elimination in southeast Asia, where Bangladesh has reported an average of some 600 new cases in 2014-2015...
January 23, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28045920/alterations-in-evoked-otoacoustic-emissions-by-the-use-of-meglumine-antimoniate-in-american-tegumentary-leishmaniasis-patients
#8
Débora Cristina de Oliveira Bezerra, Renata Oliveira de Barcelos, Ellen Carvalho de Castro, Claudia Cristina Jardim Duarte, Raquel de Vasconcellos Carvalhaes Oliveira, Tania Salgado de Sousa Torraca, Maria Helena de Araújo-Melo, Frederico Pereira Bom Braga, Benivaldo Ramos Ferreira Terceiro, Lúcia Regina do Nascimento Brahim Paes, Armando de Oliveira Schubach, Cláudia Maria Valete-Rosalino
INTRODUCTION: Tegumentary Leishmaniasis (TL) is a neglected, non-contagious, infectious disease, caused by different protozoa species of the Leishmania genus that affects skin and mucous membranes. Meglumine Antimoniate (MA), the first drug of choice for TL treatment in Brazil, has already been associated with cochlear toxicity, which is defined as damages of the cochlea caused by exposure to chemical substances, resulting in reversible or irreversible hearing loss. Auditory monitoring for cochlear toxicity aims at the early detection of auditory disorders, enabling, when possible, hearing to be preserved or an early auditory rehabilitation...
2017: PloS One
https://www.readbyqxmd.com/read/28035115/aquaglyceroporin1-gene-expression-in-antimony-resistance-and-susceptible-leishmania-major-isolates
#9
Gilda Eslami, Morteza Vakil Zarchi, Alireza Moradi, Seyed Hossein Hejazi, Seyed Mojtaba Sohrevardi, Mahmoud Vakili, Ali Khamesipour
BACKGROUND & OBJECTIVES: The mechanism of antimony resistance in Leishmania has been studied extensively, in connection with decreased influx and/or increased eflux of the drug. Aquaporin 1 (AQP1) protein has been shown to mediate the uptake of trivalent antimony. This study was aimed to find the expression level of AQP1 gene in resistant versus non-resistant clinical isolates of Leishmania major in Iranian patients. METHODS: Clinical isolates were obtained from 16 considered patients referred to Navab Safavi Clinical Center, Isfahan, Iran from October 2014 to December 2015...
October 2016: Journal of Vector Borne Diseases
https://www.readbyqxmd.com/read/28017861/diagnosis-of-mediterranean-visceral-leishmaniasis-by-detection-of-leishmania-related-antigen-in-urine-and-oral-fluid-samples
#10
Meriem Ben-Abid, Yousr Galaï, Zakia Habboul, Rim Ben-Abdelaziz, Ines Ben-Sghaier, Karim Aoun, Aïda Bouratbine
Implementation of simple diagnostic tests using non-invasive collection of biological specimens is of great importance in the diagnosis of pediatric visceral leishmaniasis caused by Leishmania infantum. Latex agglutination kit (KAtex(®)) is widely used in the diagnosis mainly in L. donovani endemic areas. However its utilization in L. infantum endemic regions remains limited and its use on noninvasive biological specimen apart urine was not reported. In this study, KAtex(®) kit was used to detect Leishmania-related antigen in urine and oral fluid of 35 L...
March 2017: Acta Tropica
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/27999807/clinical-and-microbiological-characteristics-of-visceral-leishmaniasis-outbreak-in-a-northern-italian-nonendemic-area-a-retrospective-observational-study
#12
E Franceschini, C Puzzolante, M Menozzi, L Rossi, A Bedini, G Orlando, W Gennari, M Meacci, G Rugna, E Carra, M Codeluppi, C Mussini
Background. Visceral leishmaniasis (VL) caused by Leishmania infantum is endemic in the Mediterranean area. In the last decades a northward spread of the parasite has been observed in Italy. This paper describes a VL outbreak in Modena province (Emilia-Romagna, Northern Italy) between 2012 and 2015. Methods. Retrospective, observational study to evaluate epidemiological, microbiological characteristics, and clinical management of VL in patients referring to Policlinico Modena Hospital. Results. Sixteen cases of VL occurred in the study period...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27983510/comparison-of-leishmania-typing-results-obtained-from-16-european-clinical-laboratories-in-2014
#13
Gert Van der Auwera, Aldert Bart, Carmen Chicharro, Sofia Cortes, Leigh Davidsson, Trentina Di Muccio, Jean-Claude Dujardin, Ingrid Felger, Maria Grazia Paglia, Felix Grimm, Gundel Harms, Charles L Jaffe, Monika Manser, Christophe Ravel, Florence Robert-Gangneux, Jeroen Roelfsema, Seray Töz, Jaco J Verweij, Peter L Chiodini
Leishmaniasis is endemic in southern Europe, and in other European countries cases are diagnosed in travellers who have visited affected areas both within the continent and beyond. Prompt and accurate diagnosis poses a challenge in clinical practice in Europe. Different methods exist for identification of the infecting Leishmania species. Sixteen clinical laboratories in 10 European countries, plus Israel and Turkey, conducted a study to assess their genotyping performance. DNA from 21 promastigote cultures of 13 species was analysed blindly by the routinely used typing method...
December 8, 2016: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/27977059/comparison-of-a-rapid-immunochromatographic-assay-with-an-immunofluorescent-antibody-test-for-detection-of-leishmania-infantum-antibodies-in-dogs
#14
Daniela Proverbio, Eva Spada, Roberta Perego, Luciana Baggiani, Giada Bagnagatti De Giorgi, Antonella Migliazzo, Fabrizio Vitale
BACKGROUND: Identification of Leishmania infantum-infected dogs is crucial for control of canine leishmaniosis. In particular, in areas where access to specialized laboratories is limited, the availability of reliable and rapid in-clinic serologic tests may support immediate diagnosis in suspected cases and permit detection of asymptomatic canine carriers of L infantum infection. OBJECTIVE: The purpose of the study was to validate the immunochromatographic test (ICT) Anigen Rapid Leishmania Ab Test kit for detection of L infantum antibodies in naturally exposed dogs in comparison with the immunofluorescence antibody test (IFAT)...
December 2016: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/27974541/characterization-and-diagnostic-application-of-trypanosoma-cruzi-trypomastigote-excreted-secreted-antigens-shed-in-extracellular-vesicles-released-from-infected-mammalian-cells
#15
Norma L Bautista-López, Momar Ndao, Fabio Vasquez Camargo, Takeshi Nara, Takeshi Annoura, Darryl B Hardie, Christoph H Borchers, Armando Jardim
Chagas disease, caused by Trypanosoma cruzi, although endemic in many parts of Central and South America, is emerging as a global health threat through the potential contamination of blood supplies. Consequently, in the absence of a gold standard assay for the diagnosis of Chagas additional antigens or strategies are needed. A proteomic analysis of the trypomastigote excreted secreted antigens (TESA) associated with exosomal vesicles shed by T. cruzi identified ∼80 parasite proteins; with the majority being trans-sialidases...
December 14, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27928093/imported-disease-screening-prior-to-chemotherapy-and-bone-marrow-transplantation-for-oncohematological-malignancies
#16
Adrián Sánchez-Montalvá, Fernando Salvador, Isabel Ruiz-Camps, Pere Barba, David Valcárcel, Elena Sulleiro, Enrique Sanz-García, Israel Molina
Reactivation of latent imported infections has been periodically reported in migrant patients undergoing immunosuppression. We performed a prospective study at Vall d'Hebron University Hospital (Barcelona, Spain). Migrant patients over 16 years with the diagnosis of any oncohematologic disease were included. Patients were tested for soil-transmitted helminths, hepatitis virus, and human immunodeficiency virus, Treponema pallidum, human T-cell lymphotropic virus, latent tuberculosis infection, Toxoplasma spp...
December 7, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27927927/use-of-recombinant-antigens-for-sensitive-serodiagnosis-of-american-tegumentary-leishmaniasis-caused-by-different-leishmania-species
#17
Camila Massae Sato, Maria Carmen Arroyo Sanchez, Beatriz Julieta Celeste, Malcolm S Duthie, Jeffrey Guderian, Steven G Reed, Maria Edileuza Felinto de Brito, Marliane Batista Campos, Helia Valeria de Souza Encarnação, Jorge Guerra, Tirza Gabrielle Ramos de Mesquita, Suzana Kanawati Pinheiro, Rajendranath Ramasawmy, Fernando Tobias Silveira, Marina de Assis Souza, Hiro Goto
American tegumentary leishmaniasis (ATL) (also known as cutaneous leishmaniasis [CL]) is caused by various species of protozoa of the genus Leishmania The diagnosis is achieved on a clinical, epidemiological, and pathological basis, supported by positive parasitological exams and demonstration of leishmanin delayed-type hypersensitivity. Serological assays are not routinely used in the diagnosis because many are considered to have low sensitivity and the particular Leishmania species causing the disease can lead to variable performance...
February 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27927916/field-validation-of-sybr-green-and-taqman-based-real-time-pcr-using-biopsy-and-swab-samples-to-diagnose-american-tegumentary-leishmaniasis-in-an-area-where-leishmania-viannia-braziliensis-is-endemic
#18
Ciro Martins Gomes, Mariana Vicente Cesetti, Natália Aparecida de Paula, Sebastián Vernal, Gaurav Gupta, Raimunda Nonata Ribeiro Sampaio, Ana Maria Roselino
The precise diagnosis of American tegumentary leishmaniasis (ATL) is an essential task due to the disease's associated morbidity. A noninvasive, extremely sensitive, and highly specific exam is critical, particularly for mucosal leishmaniasis (ML), in which a low parasite quantity is expected. We aimed to compare the diagnostic accuracy of swab and biopsy sample analysis using SYBR Green- and TaqMan-based real-time PCR (qPCR) assays with that of a composite reference standard consisting of the Montenegro skin test, serology, histopathology, smears, culture, and conventional PCR...
February 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27925065/natural-canine-infection-by-leishmania-infantum-and-leishmania-amazonensis-and-their-implications-for-disease-control
#19
Letícia da Cruz Sanches, Cleber Costa de Martini, Alex Akira Nakamura, Maria Emília Bodini Santiago, Beatriz Dolabela de Lima, Valéria Marçal Felix de Lima
Leishmaniasis is a major public health problem worldwide. Because Leishmania can adapt to new hosts or vectors, knowledge concerning the current etiological agent in dogs is important in endemic areas. This study aimed to identify the Leishmania species detected in 103 samples of peripheral blood from dogs that were naturally infected with these protozoa. The diagnosis of leishmaniasis was determined through parasitological examination, the indirect enzyme-linked immunosorbent assay (ELISA) and the polymerase chain reaction (PCR)...
October 2016: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/27919688/leishmaniases-in-ecuador-comprehensive-review-and-current-status
#20
REVIEW
Yoshihisa Hashiguchi, Lenin N Velez, Nancy V Villegas, Tatsuyuki Mimori, Eduardo A L Gomez, Hirotomo Kato
This article reviews current knowledge about leishmaniases in Ecuador, proceeding from 1920, when the first human case was described, to the present, mainly focusing on the recent research events published. Regarding basic situations, it appears that 23 of Ecuador's 24 provinces have leishmaniasis-case reports. The disease is one of the mandatory notification infectious diseases in the country since 2005. All the 21,305 cases notified to the Ministry of Public Health, during the period from 2001 through 2014, were said to involve different clinical features of cutaneous leishmaniasis (CL) but not visceral (VL)...
February 2017: Acta Tropica
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