Results: 79

Leishmaniasis en Bolivia, revisión y estado actual en Tarija, frontera con Argentina

Biomédica (Bogotá); 40 (supl.1), 2020
Introducción. En 1997, en el departamento de Tarija, Bolivia, situado en la frontera con Argentina, se notificó por primera vez la presencia de pacientes con úlceras en las partes descubiertas de la piel, cuyas características clínicas y epidemiológicas correspondían a leishmaniasis. Objetivo. Des...

Further insights into the eco-epidemiology of American cutaneous leishmaniasis in the Belem metropolitan region, Pará State, Brazil

Abstract INTRODUCTION: In the Belém Metropolitan Region (BMR), Pará State, Brazil, American cutaneous leishmaniasis (ACL) is endemic; however, very little is known regarding its causative agents. Therefore, we used our standard diagnostic approach combined with an RNA polymerase II largest subunit (RN...

Insights into the proteomic profile and gene expression of Lutzomyia longipalpis-derived Lulo cell line

Mem. Inst. Oswaldo Cruz; 115 (), 2020
BACKGROUND Lutzomyia longipalpis-derived cell line (Lulo) has been suggested as a model for studies of interaction between sandflies and Leishmania. OBJECTIVES Here, we present data of proteomic and gene expression analyses of Lulo cell related to interactions with Leishmania (Viannia) braziliensis. M...

The heterologous expression of Escherichia coli MutT enzyme is involved in the protection against oxidative stress in Leishmania braziliensis

Mem. Inst. Oswaldo Cruz; 115 (), 2020
BACKGROUND Oxidative stress is responsible for generating DNA lesions and the 8-oxoguanine (8-oxoG) is the most commonly lesion found in DNA damage. When this base is incorporated during DNA replication, it could generate double-strand DNA breaks and cellular death. MutT enzyme hydrolyzes the 8-oxoG fro...

Metformin promotes susceptibility to experimental Leishmania braziliensis infection

Mem. Inst. Oswaldo Cruz; 115 (), 2020
BACKGROUND Metformin (MET) is a hypoglycemic drug used for the treatment of diabetes, despite interference in host immunity against microorganisms. Cutaneous infection caused by pathogens such as Leishmania braziliensis (Lb), the agent responsible for cutaneous leishmaniasis (CL) in Brazil, represents a...

Minor temperature shifts do not affect chromosomal ploidy but cause transcriptomic changes in Leishmania braziliensis promastigotes in vitro

Mem. Inst. Oswaldo Cruz; 115 (), 2020
BACKGROUND The leishmaniases are complex neglected diseases caused by protozoan parasites of the genus Leishmania. Leishmania braziliensis is the main etiological agent of cutaneous leishmaniasis in the New World. In recent studies, genomic changes such as chromosome and gene copy number variations (CNV...

Leishmania infantum induces high phagocytic capacity and intracellular nitric oxide production by human proinflammatory monocyte

Mem. Inst. Oswaldo Cruz; 115 (), 2020
BACKGROUND The mechanism of resistance to SbIII in Leishmania is complex, multifactorial and involves not only biochemical mechanisms, but also other elements, such as the immune system of the host. OBJECTIVES In this study, putative changes in the immunological profile of human monocytes infected wit...

Serological study of feline leishmaniasis and molecular detection of Leishmania infantum and Leishmania braziliensis in cats (Felis catus)

Abstract Blood samples and swabs from ocular conjunctiva and mouth were obtained from 64 cats. Of 64 serum samples, 19 were positive for Leishmania antibodies by ELISA (29.80%). Eight cats were positive by PCR (12.5%) in swab samples from mouth and/or ocular mucosa. Poor kappa agreement between serologic...

Leishmaniose Tegumentar Americana: uma análise histopatológica e molecular em lesões de dermatites no estado de Pernambuco, Brasil

Rev. bras. anal. clin; 51 (4), 2019
Objetivo: Realizar uma análise histopatológica e molecular em biópsia de pele entre as lesões de dermatites de pacientes com suspeita de Leishmaniose Tegumentar Americana (LTA) no hospital de referência do estado de Pernambuco entre o período de 2016 e 2017. Métodos: Trata-se de um estudo descriti...

Estandarización y validación de pruebas de elisa tipo indirecto para la determinación de los niveles de anticuerpos IgG e IgE antileishmania, como método complementario para el diagnóstico y seguimiento de la respuesta al tratamiento

Con-ciencia (La Paz); 7 (2), 2019
La leishmaniasis cutánea se caracteriza por la inducción de una respuesta inmune celular y humoral, siendo los niveles de anticuerpos IgG e IgE indicadores serológicos del diagnóstico, la progresión y resolución de la enfermedad. En el presente estudio se estandarizaron dos pruebas de ELISA indirec...