Sökning: "leukotrienes"

Visar resultat 1 - 5 av 82 avhandlingar innehållade ordet leukotrienes.

  1. 1. Phospholipase A2 in nerve injury and axonal outgrowth

    Författare :Marie Hornfelt; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Neurology; cell death; apoptosis; leukotrienes; arachidonic acid; M-type receptor; secretory phospholipase A2; cytosolic phospholipase A2; sciatic nerve; dorsal root ganglia; growth cone; axonal outgrowth; nerve injury; peripheral nerve regeneration; neuropsychology; neurophysiology; Neurologi; neuropsykologi; neurofysiologi; Animal physiology; Djurfysiologi;

    Sammanfattning : This thesis deals with processes coupled to injury in the peripheral nervous system (PNS), with a general aim to investigate the role of phospholipase A2 (PLA2) enzymes in axonal outgrowth. The axonal outgrowth of dorsal root ganglia (DRG) neurons in vitro was reduced by several different inhibitors of PLA2 activity and enhanced by an activator of this enzyme. LÄS MER

  3. 2. Functional characterisation of receptors for cysteinyl leukotrienes in smooth muscle

    Författare :Eva Wikström Jonsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :cysteinyl leukotrienes; leukotriene receptor; histamine; antigen; smooth muscle; lipoxin; thromboxane; Schultz-Dale reaction;

    Sammanfattning : The cysteinyl leukotrienes (leukotriene C4, D4 and E4) have potent biological actions which significantly contribute to the airway obstruction in asthma. Several of these effects are blocked by drugs known as CysLT1-receptor antagonists, which have been introduced as new treatment for asthma. LÄS MER

  4. 3. Biosynthesis and biological role of leukotrienes in B lymphocytes

    Författare :Yilmaz Mahshid; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Leukotrienes (LT) are potent lipid mediators, synthesized from arachidonic acid (AA) upon cell activation. The essential enzyme for leukotriene biosynthesis is 5-lipoxygenase (5-LO), converting AA, through a two step process to LTA4. The activity of 5-LO is dependent on 5-lipoxygenase activating protein (FLAP). LÄS MER

  5. 4. Leukotrienes and leukotriene receptors : potential roles in cardiovascular diseases

    Författare :Hong Qiu; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Leukotrienes (LTs) are a family of lipid mediators that are involved in host defense and inflammatory responses. They are synthesized from arachidonic acid through the 5-lipoxygenase (5-LO) pathway, and are divided into two classes, the classical chemoattractant leukotriene B4 (LTB4), and spasmogenic cysteinyl leukotrienes (cys-Us) including LTC4, LTD4 and LTE4. LÄS MER

  7. 5. Biosynthesis and biological role of leukotrienes in human lymphocytes

    Författare :Yilmaz Mahshid; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Leukotrienes (LT) are biologically active metabolites of arachidonic acid. The key enzyme in leukotriene biosynthesis is 5-lipoxygenase (5-LO). Leukotriene B4 exerts its biological effect mainly via BLT1, the high affinity receptor for LTB4. Leukotriene B4 is a potent proinflammatory and chemotactic mediator. LÄS MER