Sökning: "toxin accumulation"

Visar resultat 1 - 5 av 23 avhandlingar innehållade orden toxin accumulation.

  1. 1. Bioinformatics, evolution and revolution in our understanding of toxin-antitoxin systems

    Författare :Chayan Kumar Saha; Gemma C. Atkinson; Victoria Shingler; Gipsi Lima Mendez; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Bioinformatics; Alarmones; Evolution; Gene neighbourhood; Toxin; Antitoxin; molekylärbiologi; Molecular Biology;

    Sammanfattning : Bacteria experience a wide range of natural challenges during their life cycles, to which they must respond and adapt to live. Under stressed conditions such as amino acid starvation, bacteria slow down their growth mechanism by producing small alarmone nucleotides guanosine pentaphosphate (pppGpp) and tetraphosphate (ppGpp), collectively referred to as (p)ppGpp. LÄS MER

  3. 2. Effects of toxin-producing phytoplankton on copepods: feeding, reproduction and implications to the fate of toxins

    Författare :Betina Kozlowsky-Suzuki; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; Ekologi; GSH transferase; oocyte development; fate of toxins; toxin accumulation; toxic phytoplankton; copepods;

    Sammanfattning : Phytoplankton growth and loss rates are governed by several factors and in many cases, when growth control fails, algal blooms are established. Such blooms can be formed by different phytoplankton species and some of them have harmful impacts on marine ecosystems. LÄS MER

  4. 3. Mechanistic studies of the adjuvant effects of CTA1-DD and the native cholera toxin: Impact of cell targeting and tissue localization

    Författare :Johan Mattsson; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Vaccines; adjuvants; cholera toxin; germinal center; CTA1-DD; follicular dendritic cells; denritic cells; Th1; Th2; Th17; complement;

    Sammanfattning : Vaccines are the most effective means of preventing infectious diseases and improving global health. However, few vaccines have successfully been developed for protection at mucosal surfaces where most pathogens gain access. LÄS MER

  5. 4. Bacteria and cancer : from toxin delivery to carcinogenesis

    Författare :Riccardo Guidi; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Epidemiological evidence link certain chronic bacterial infections to a higher risk of cancer development. Induction of an inflammatory circuit and the accumulation of genomic instability are considered mechanisms by which bacteria contribute to malignant transformation. LÄS MER

  7. 5. Influence of Human-induced Environmental Changes on the Physiology of the Harmful Benthic Marine Microalga Ostreopsis ovata

    Författare :Nayani K. Vidyarathna; Edna Granéli; Sandra Shumway; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ostreopsis ovata; benthic dinoflagellate; climate change; temperature increase; nutrient enrichment; acidification; physiology; cell growth; cell toxicity; carbohydrate accumulation; Akvatisk ekologi; Aquatic Ecology;

    Sammanfattning : This thesis focus on the influence of human-induced environmental changes on the physiology of Ostreopsis ovata; a toxic, benthic dinoflagellate, which form blooms in tropical and temperate marine waters. O. LÄS MER