Sökning: "Pietras"

Visar resultat 1 - 5 av 11 avhandlingar innehållade ordet Pietras.

  1. 1. Hypoxia-Inducible Factors in Tumor Cell Differentiation and Tumor Vascularization

    Författare :Alexander Pietras; Institutionen för translationell medicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; HIF-2alpha; cancer; notch; angiogenesis; tumor-initiating cells; hypoxia; neuroblastoma; differentiation;

    Sammanfattning : Mammalian cells, including tumor cells, adapt to hypoxia via stabilization of two transcription factors - Hypoxia-inducible factor (HIF)-1alpha and HIF-2alpha. Among other consequences, hypoxia is a main driving force behind angiogenesis. LÄS MER

  3. 2. Inhibition of PDGF receptor signaling in tumor stroma : Effects on interstitial hypertension, drug uptake and therapeutic response

    Författare :Kristian Pietras; Sven Påhlman; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Oncology; PDGF; tumor; stroma; tyrosine kinase inhibitor; combination therapy; Onkologi; Oncology; Onkologi; molekylär cellbiologi; Molecular Cellbiology;

    Sammanfattning : The role of platelet-derived growth factor (PDGF) in malignancies involves both autocrine and paracrine stimulation of cells within the tumor. The interstitial fluid pressure (IFP) is one of the forces that govern the transvascular flow of fluids. LÄS MER

  4. 3. Interaction and regulation of asthma susceptibility genes

    Författare :Christina Orsmark Pietras; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Asthma is a disorder characterized by symptoms such as wheezing, shortness of breath, chest tightness or coughing. It is a chronic inflammation in the airways and the inflammation is usually accompanied by limitations in airflow as a result of hyper-secretion of mucus and broncho-constriction. LÄS MER

  5. 4. Small angle scattering as a tool to study protein structure and interactions

    Författare :Zuzanna Pietras; Maria Sunnerhagen; Eleonore von Castelmur; Cy Jeffries; Lars-Göran Mårtensson; Annette Langkilde; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : This thesis uses small angle X-ray and neutron scattering (SAXS/SANS) to gain structural and functional insight into the molecular regulation of critical life processes in prokaryotic and eukaryotic species. The presented studies highlight the strength of combining low-resolution structure determination with biophysical and in silico modelling methods to extensively characterize proteins and their interactions. LÄS MER

  7. 5. Leukocytes in Angiogenesis : Learning from Transplanted Pancreatic Islets

    Författare :Gustaf Christoffersson; Mia Phillipson; Kristian Pietras; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; angiogenesis; pancreatic islet transplantation; islets of Langerhans; diabetes mellitus; leukocytes; neutrophils; macrophages; pericytes; MMP-9; VEGF-A; Medical Science; Medicinsk vetenskap;

    Sammanfattning : Angiogenesis, the growth of new blood vessels, is a complex process involving several cell types and molecular signals. Excessive vascular growth is a problem in tumors, and insufficient vascularization hampers the function of transplanted insulin-producing pancreatic islets. LÄS MER