Sökning: "försvar mot förändringar"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden försvar mot förändringar.

  1. 1. Causes and consequences of blood parasite infections in birds

    Författare :Martin Stjernman; Biodiversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Animal physiology; Djurfysiologi; Parasitologi människa och djur ; Parasitology human and animal ; maternal transfer; stabilising selection; parasite resistance; parasites; trade-off; cost of reproduction; Ficedula hypoleuca; pied flycatcher; Haemoproteus; blue tit; Parus caeruleus;

    Sammanfattning : Parasites are ubiquitous and can cause significant fitness reductions to their hosts. Therefore, selection for the evolution of host resistance should be strong. However, resistance may be costly and should be traded-off against other fitness related traits. LÄS MER

  3. 2. Molecular Mechanisms in Hematopoietic Stem Cell Aging

    Författare :Gudmundur Norddahl; Institutionen för experimentell medicinsk vetenskap; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : The blood is composed of many different cell types that through tightly regulated mechanisms are derived from hematopoietic stem cells (HSCs). In addition, HSCs are able to undergo self-renewing divisions whereby new HSCs are produced. LÄS MER

  4. 3. Is genetic diversity more important for terpene emissions than latitudinal adaptation? : Using genetically identical trees to better understand emission fluctuations across a European gradient

    Författare :Ylva van Meeningen; Institutionen för naturgeografi och ekosystemvetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; BVOC; English oak; European beech; Norway spruce; genetic diversity; European gradient;

    Sammanfattning : Biogenic volatile organic compounds (BVOCs) are trace gases other than CO2 and CH4 produced and emitted by the vegetation. The group consists of thousands of compounds in various shapes and sizes and with short atmospheric lifetimes. Some of the most common BVOC groups are called isoprene, monoterpenes and sesquiterpenes. LÄS MER

  5. 4. Pathophysiological Mechanisms and Diagnostic Markers in Alzheimer’s Disease

    Författare :Joakim Hertze; Klinisk minnesforskning; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Alzheimer’s disease; mild cognitive impairment; white matter lesions; brain reserve; blood-brain barrier; angiogenesis; neuroinflammation; neurogranin; YKL-40; VEGF; IGF; ICAM-1; VCAM-1;

    Sammanfattning : Alzheimer’s disease (AD), the most common cause of dementia, is a growing concern. As the life expectancy increases across the globe, the number of affected people is estimated to reach 100 million by 2050. LÄS MER

  7. 5. Interactions between extracellular matrix proteins and the complement system - In the perspective of cartilage degradation in inflammatory joint diseases

    Författare :Camilla Melin Fürst; Malmö Proteinkemi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Complement system; rheumatoid arthritis; osteoarthritis; extracellular matrix; cartilage degradation; mass spectrometry;

    Sammanfattning : Abstract: The joint diseases osteoarthritis and rheumatoid arthritis are characterized by destructive inflammatory processes that result in pathological changes of the joint tissues, including proteolytic degradation of cartilage and release of extracellular matrix proteins or fragments to the synovial fluid. The complement system, which is a part of the innate immune system, plays a central role in promoting the joint inflammation in these diseases. LÄS MER