Sökning: "protozoan"

Visar resultat 1 - 5 av 44 avhandlingar innehållade ordet protozoan.

  1. 1. Genome and transcriptome studies of the protozoan parasites Trypanosoma cruzi and Giardia intestinalis

    Författare :Oscar Franzén; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP;

    Sammanfattning : Trypanosoma cruzi and Giardia intestinalis are two human pathogens and protozoan parasites responsible for the diseases Chagas disease and giardiasis, respectively. Both diseases cause su ering and illness in several million individuals. LÄS MER

  2. 2. The Salmonella enterica virulence : Its role in bacterial adaption to mammalian and protozoan cells

    Författare :Dilek Tezcan-Merdol; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; Salmonella virulence plasmid; spvB gene; mono ADP-ribosyl transferase; actin; Acanthamoeba rhysodes;

    Sammanfattning : Salmonellae are Gram-negative enteric bacteria and facultative intracellular pathogens responsible for a diversity of illnesses in a wide range of hosts, including man. Many serovars of Salmonella enterica harbor a plasmid that enhances bacterial virulence in infection models, and that seems to promote extraintestinal infection in man. LÄS MER

  3. 3. The aquatic microbial food web and occurence of predation-resistant and potentially pathogenic bacteria, such as Francisella tularensis

    Författare :Johanna Thelaus; Agneta Andersson; Mats Forsman; Farooq Azam; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; bacteria; protozoa; ecology; predation; nutrient-availability; microbial food web; model; predation-resistance; Francisella; reservoir; biofilm formation; Freshwater ecology; Limnisk ekologi;

    Sammanfattning : All natural aquatic systems harbour a vast variety of microorganisms. In the aquatic microbial food web, the larger microorganisms (i.e. protozoa) feed on the smaller microorganisms (i. LÄS MER

  4. 4. Studies of the recognition and activation of natural killer cells

    Författare :Clas Une; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; NK cells; activation; cytotoxicity; IFN-[gamma] IFN-[alpha] [beta]; IL-12; G-PI; MHC class I;

    Sammanfattning : Natural killer (NK) cells mediate part of the innate immune response that impedes the spread of invading microorganisms and shapes the downstream adaptive immune response. NK cells spontaneously kill tumor cells and other cells upon contact. Killing requires engagement of germline encoded receptors that mediate positive and negative signals. LÄS MER

  5. 5. Molecular diagnosis of drug resistance in Plasmodium falciparum and virulence factors in Entamoeba histolytica

    Författare :Sherwan Zindrou; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; Plasmodium falciparum; dhfr gene; pyrimethamine; cycloguanil; mutations; Polymerase chain reaction; Entamoeba histolytica; hemolysins; hemolysis; virulence factors.;

    Sammanfattning : Four species of the protozoan parasite genus Plasmodiun are known to infect man. Plasmodium falciparum, the most virulent species is increasingly associated with resistance to antimalarial drugs. LÄS MER