Protozoans

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    Protocols in Current Issue
    Spectrophotometric Assessment of Heme Oxygenase-1 Activity in Leishmania-infected Macrophages
    Authors:  Moumita Basu, Shriya Saha and Anindita Ukil, date: 04/05/2020, view: 138, Q&A: 0
    Heme oxygenase-1 (HO-1) is a stress responsive enzyme that metabolizes heme and releases free iron, carbon monoxide (CO), and biliverdin (BV), which rapidly undergoes conversion to bilirubin (BL). Estimation of bilirubin is the basis of HO-1 assay. ...
    Spectrophotometric Assessment of Heme Oxygenase-1 Activity in Leishmania-infected Macrophages
    Authors:  Moumita Basu, Shriya Saha and Anindita Ukil, date: 04/05/2020, view: 138, Q&A: 0
    [Abstract] Heme oxygenase-1 (HO-1) is a stress responsive enzyme that metabolizes heme and releases free iron, carbon monoxide (CO), and biliverdin (BV), which rapidly undergoes conversion to bilirubin (BL). Estimation of bilirubin is the basis of HO-1 assay. HO-1 activity is widely employed to determine antioxidant response of cells under different ...
    CRISPR-Cas9 Genome Editing of Plasmodium knowlesi
    Authors:  Franziska Mohring, Melissa N. Hart, Avnish Patel, David A. Baker and Robert W. Moon, date: 02/20/2020, view: 353, Q&A: 0
    [Abstract] Plasmodium knowlesi is a zoonotic malaria parasite in Southeast Asia that can cause severe and fatal malaria in humans. The main hosts are Macaques, but modern diagnostic tools reveal increasing numbers of human infections. After P. falciparum, P. knowlesi is the only other malaria parasite capable of being maintained in ...
    Surface Plasmon Resonance Analysis of the Protein-protein Binding Specificity Using Autolab ESPIRIT
    Authors:  Pragyan Parimita Rath, Gaurav Anand and Shalini Agarwal, date: 02/20/2020, view: 345, Q&A: 0
    [Abstract] Direct protein-protein interactions are known to regulate a wide range of cellular activities. To understand these contacts one can employ various experimental methods like Dynamic Light Scattering (DLS), Fluorescence Resonance Energy Transfer (FRET), Isothermal titration calorimetry (ITC), Chemical crosslinking, Co-immunoprecipitation (Co-IP), ...
    A Radioactive-free Kinase Inhibitor Discovery Assay Against the Trypanosoma brucei Glycogen Synthase Kinase-3 short (TbGSK-3s)
    Authors:  Antonia Efstathiou and Despina Smirlis, date: 01/20/2020, view: 290, Q&A: 0
    [Abstract] The identification of small molecules possessing inhibitory activity in vitro, against a given target kinase, is the first step in the drug discovery process. Herein, we describe a non radioactive protocol using luciferase-based ATP assay for the identification of inhibitors for the short isoform of the Trypanosoma brucei’s ...
    Quantification of Nitric Oxide and Reactive Oxygen Species in Leishmania-infected J774A.1 Macrophages as a Response to the in vitro Treatment with a Natural Product Compound
    Authors:  Kalliopi Karampetsou, Olga S. Koutsoni and Eleni Dotsika, date: 12/05/2019, view: 607, Q&A: 0
    [Abstract] Leishmaniasis is a parasitic disease caused by the obligatory intracellular protozoa Leishmania spp. Current therapeutic options are limited and thus, drug discovery against leishmaniasis is very important. Nevertheless, there is a great difficulty to develop therapeutic strategies against the disease because the parasite deploys various ...
    Leishmania Parasite Quantification by Bioluminescence in Murine Models
    Authors:  Marta Reverte and Nicolas Fasel, date: 11/20/2019, view: 480, Q&A: 0
    [Abstract] Leishmaniasis remains a major public health problem worldwide with a prevalence of 12 million, an incidence of 1 million persons, and 350 million people being at risk. Murine models have been largely used for studying the host-pathogen relationship and developing effective chemotherapies against Leishmania parasites. Thus, preclinical ...
    In vitro Screening of Antileishmanial Activity of Natural Product Compounds: Determination of IC50, CC50 and SI Values
    Authors:  Olga S. Koutsoni, Kalliopi Karampetsou and Eleni Dotsika, date: 11/05/2019, view: 544, Q&A: 0
    [Abstract] Neglected tropical diseases gain the scientific interest of numerous research programs in an attempt to achieve their effective control or elimination. In this attempt, more cutting-edge public health policies and research are needed for the discovery of new, safer and effective drugs originated from natural products. Here, we describe protocols ...
    Measurement of Acid Ecto-phosphatase Activity in Live Leishmania donovani Parasites
    Authors:  Amalia Papadaki and Haralabia Boleti, date: 10/05/2019, view: 637, Q&A: 0
    [Abstract] Acid ecto-phosphatases are enzymes that hydrolyze phosphomonoesters in the acidic pH range with their active sites facing the extacellular medium. Their activities can be measured in living cells. In bacteria and protozoan pathogens, acid ecto-phosphatases have been associated with the survival of intracellular pathogens within phagocytes through ...
    Eimeria vermiformis Infection Model of Murine Small Intestine
    Authors:  Patrícia Figueiredo-Campos, Cristina Ferreira, Birte Blankenhaus and Marc Veldhoen, date: 12/20/2018, view: 1859, Q&A: 0
    [Abstract] Eimeria vermiformis is a tissue specific, intracellular protozoan that infects the murine small intestinal epithelia, which has been widely used as a coccidian model to study mucosal immunology. This mouse infection model is valuable to investigate the mechanisms of host protection against primary and secondary infection in the small ...
    Analysis of DNA Exchange Using Thymidine Analogs (ADExTA) in Trypanosoma cruzi
    [Abstract] Trypanosoma cruzi is a protozoan parasite belonging to the Trypanosomatidae family. Although the trypanosomatids multiply predominantly by clonal generation, the presence of DNA exchange in some of them has been puzzling researchers over the years, mainly because it may represent a novel form that these organisms use to gain variability. ...



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