Search for dissertations about: "Ulf Lerner"

Showing result 1 - 5 of 7 swedish dissertations containing the words Ulf Lerner.

  1. 1. Cellular mechanisms involved in bone resorption

    Author : Ulf Lerner; Umeå universitet; []
    Keywords : Bone resorption. cyclic AMP; parathyroid hormone; prostaglandins; la OH D3; lysosomal enzyme release; osteoclast; periodontitis; rheumatoid arthritis;

    Abstract : The effects of parathyroid hormone (PTH), prostaglandins (PGE1, PGE2, PGF2a), cAMP, cAMP-analogues, phosphodiesterase (PDE) inhibitors and la (OH) D3 on bone resorption and associated cellular process have been studied in a bone organ culture system using half- calvaria from 6-7 day-old mice. Bone resorption was assessed by determining the release of calcium (Ca2+), inorganic phosphate (Pi) and 45Ca from the calvarial bones to the culture media. READ MORE

  2. 2. Cellular and molecular responses of periodontal connective tissue cells to Actinobacillus actinomycetemcomitans cytolethal distending toxin

    Author : Georgios N. Belibasakis; Sotirios Kalfas; Ulf H. Lerner; Anders Johansson; Veli-Jukka Uitto; Umeå universitet; []
    Keywords : Medical sciences; Actinobacillus actinomycetemcomitans; cytolethal distending toxin; periodontal connective tissue cells; localized aggressive periodontitis; growth arrest; bone resorption; receptor activator of NF-κB ligand; osteoprotegerin; pro-inflammatory cytokines; MEDICIN OCH VÅRD; MEDICINE; MEDICIN; odontologi; Odontology;

    Abstract : Actinobacillus actinomycetemcomitans is present in elevated proportions and numbers in dental bacterial biofilms of patients with localized aggressive periodontitis. This variant of periodontal disease, occurring in adolescents and young adults, is characterized by rapid and severe destruction of the connective tissues and bone supporting the teeth, eventually culminating in tooth loss. READ MORE

  3. 3. Kinins : important regulators in inflammation induced bone resorption

    Author : Anna Bernhold Brechter; Ulf Lerner; Hans-Erik Claesson; Umeå universitet; []
    Keywords : Bone resorption; Osteoblasts; Kinins; B1 and B2 receptors; IL-1β; TNF-α; Prostaglandin; COX-2; RANKL; Transcription factors; IL-4; IL-13; Medical Cell Biology; medicinsk cellbiologi;

    Abstract : Inflammatory processes in, or in close vicinity of, the skeleton often lead to loss of bone tissue. Different cytokines have been shown to be involved as stimulators of inflammatory induced osteoclastic bone resorption. READ MORE

  4. 4. The calcitonin gene family of peptides : receptor expression and effects on bone cells

    Author : Susanne Granholm; Ulf Lerner; Pernilla Lundberg; Göran Andersson; Umeå universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; CT family of peptides; osteoclast differentiation; bone resorption; CTR; CRLR; RAMPs; Cell biology; Cellbiologi;

    Abstract : The calcitonin gene family of peptides consists of calcitonin (CT), two calcitonin gene related peptides (α-CGRP, β-CGRP), adrenomedullin (ADM), amylin (AMY), three calcitonin receptor activating peptides (CRSP1-3) and intermedin/adrenomedullin2 (IMD). These peptides bind to one of two G protein -coupled receptors, the calcitonin receptor (CTR) or the calcitonin receptor-like receptor (CRLR). READ MORE

  5. 5. Oral health and cardiovascular disease

    Author : Anders Holmlund; Lars Lind; Ulf. H Lerner; Anders Gustafsson; Uppsala universitet; []
    Keywords : Medicine; Oral health; periodontal disease; number of teeth; cardiovascular disease; mortality; Medicin;

    Abstract : In the past two decades studies have indicated that oral health might be associated with the prevalence for cardiovascular disease (CVD), although the biological link still remains unknown. Bacteria and inflammatory mediators causing periodontal disease have also been suggested to influence the progression of atherosclerosis. READ MORE