Search for dissertations about: "Defense mechanism"

Showing result 6 - 10 of 284 swedish dissertations containing the words Defense mechanism.

  2. 6. Natural Products from Highland and Medicinal Plants from Bolivia

    Author : Yonny Flores; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Defense mechanism; Bolivian plants; Organic chemistry; Organisk kemi; Secondary Metabolites;

    Abstract : Bolivia is located in the central part of South America and has a large varied ecology - the Amazonas rainforests, the dry forests of the Chaco, the mist forests, the punas and high Andean vegetation. Plants that live in the Bolivia highlands have developed physical and chemicals defense mechanisms to survive in the hard environment of the region. READ MORE

  4. 7. Novel actions of thrombin-derived host defense peptides

    Author : Finja Hansen; Lund Dermatologi och venereologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Host defense peptides; Thrombin; Monocytes Macrophages; Gram-negative bacteria; LPS; TLR; Phagocytosis; Inflammation; Endocytosis;

    Abstract : Thrombin-derived C-terminal peptides (TCPs) constitute a novel class of immunomodulatory host defense peptides, generated during infection and inflammation. Previous investigations have shown that TCPs of 2-3 kDa inhibit pro-inflammatory immune responses in vitro and in vivo, but their mode of action remained unclear. READ MORE

  5. 8. Cellular Responses to Arsenite and Cadmium - Mechanisms of Toxicity and Defense in Saccharomyces cerevisiae

    Author : Therese Jacobson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; arsenic; arsenite; cadmium; glutathione; extracellular defense; protein aggregation; chaperones; proteasome; Saccharomyces cerevisiae;

    Abstract : All biological systems have to cope with a wide range of metals that are present in the environment. Metals can be essential or beneficial for life, inert or non-essential and toxic, often depending on their chemical form and concentration. Most organisms have evolved defense mechanisms in order to deal with toxic metals. READ MORE

  6. 9. Viperin vs. tick-borne encephalitis virus : mechanism of a potent antiviral protein

    Author : Kirstin Vonderstein; Anna Överby Wernstedt; Magnus Evander; Sonja Best; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Tick-borne encephalitis virus; TBEV; type-I interferon; IFN; Interferon-stimulated gene; ISG; viperin; GBF1; CIAO1; antiviral protein; genome replication; particle release; capsid;

    Abstract : Tick-borne encephalitis virus (TBEV) is a very important virus medically, causing mild or severe encephalitis often with long-lasting sequelae. Treatment of tick-borne encephalitis is limited to supportive care, and antiviral drugs are much needed.The type-I interferon (IFN) system is the first line of host defense against many viruses. READ MORE

  7. 10. Mitigating Distributed Denial-of-Service Attacks: Application-defense and Network-defense Methods

    Author : Zhang Fu; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Distributed Denial-of-Service; Network Security; Distributed Computing; System Design;

    Abstract : Distributed Denial of Service (DDoS) attacks can be so powerful that theycan easily deplete the computing resources or bandwidth of the potential targets.Based on the types of the targets, DDoS attacks can be addressed in two levels:application-level and network-level. READ MORE