Search for dissertations about: "Helen Håkansson"

Found 4 swedish dissertations containing the words Helen Håkansson.

  1. 1. Vitamin A and ß-carotene metabolism and effects of UV irradiation in human keratinocytes and melanocytes

    Author : Eva Andersson; Helen Håkansson; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : Retinoids (vitamin A and its derivatives) are modulators of proliferation and differentiation. Both retinol (ROH) and its metabolite 3,4-didehydroretinol (ddROH) can be converted to retinoic acid (RA) and 3,4-didehydroretinoic acid (ddRA), ligands for the nuclear receptors, which induce gene transcriptions. READ MORE

  2. 2. CYP26B1 as regulator of retinoic acid in vascular cells and atherosclerotic lesions

    Author : Ali Ateia Elmabsout; Allan Sirsjö; Karin Fransén; Helen Håkansson; Örebro universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; CYP26B1; alternative splice; vascular cells; atherosclerosis; alltrans-retinoic acid; gene polymorphism; inflammation; statins; Medicin; Medicine;

    Abstract : Cardiovascular disease (CVD), currently the most common cause of morbidity and mortality worldwide, is caused mainly by atherosclerosis. Atherosclerosis is a chronic multifocal, immunoinflammatory, fibroproliferative disease of medium and large arteries. READ MORE

  3. 3. Interaction of Xenobiotics with the Glucocorticoid Hormone System in vitro

    Author : Maria Johansson; Helen Håkansson; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Biology; DDT; PCB; tolylfluanid; adrenal; CYP11B1; glucocorticoid receptor; endocrine disrupter; Biologi; Biology; Biologi; Ecotoxicology; ekotoxikologi;

    Abstract : Persistent environmental pollutants were examined for their interaction with the glucocorticoid hormone system. The focus was placed on interference with the glucocorticoid synthesis and the glucocorticoid-signalling pathway in various in vitro test systems. READ MORE

  4. 4. Retinoic Acid Metabolism Blocking Agents and the Skin : In vivo and in vitro Studies of the Effects on Normal and Diseased Human Epidermis

    Author : Elizabeth Pavez Loriè; Anders Vahlquist; Hans Törmä; Marie Virtanen; Helen Håkansson; Uppsala universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; CYP; CYP26; retinoids; vitamin A; RAMBA; metabolism; keratinocyte; epidermis; retinoid regulated genes; Dermatology and venerology; Dermatologi och venerologi;

    Abstract : Retinoic Acid Metabolism Blocking Agents (RAMBAs) increase the endogenous levels of all-trans retinoic acid (RA) by inhibiting CYP26 enzymes. Thus they are believed to mimic the effects of retinoid treatment. Their mechanism of action and effects on vitamin A metabolism in keratinocytes are however uncertain. READ MORE