LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 2 of total 2

Search options

  1. Article: How TNF was recognized as a key mechanism of disease.

    Clark, Ian A

    Cytokine & growth factor reviews

    2007  Volume 18, Issue 3-4, Page(s) 335–343

    Abstract: ... By the late 1980s excess TNF production was proposed to be central to acute systemic viral diseases ... was made following the original 1975 TNF (tumor necrosis factor) publication from New York describing ... it was argued in 1981 that TNF and related cytokines initiated events that caused pathology, as well ...

    Abstract This review summarizes the origins of the insight that excess production of pro-inflammatory cytokines caused a constellation of changes that contribute to pathophysiology of disease. This connection was made following the original 1975 TNF (tumor necrosis factor) publication from New York describing how activated macrophages kill tumors. The study caught the eye of a group in London who were trying to understand how the same in vivo macrophage activation would protect mice against the erythrocytic protozoan parasites that cause malaria and babesiosis. Based on collaborative research between these two groups, it was argued in 1981 that TNF and related cytokines initiated events that caused pathology, as well as parasite death within red cells in these infectious diseases. This proved to be a key conceptual advance. It was also argued that the pathology of bacterial sepsis logically had TNF origins. Once TNF was cloned in 1985, allowing its specific analysis in serum and neutralization in vivo, the involvement of this cytokine in infectious disease pathology was pursued by a number of groups. Some researchers found that once "their" cytokine was cloned and sequenced, they had been unwittingly expanding knowledge on TNF for several years. By the late 1980s excess TNF production was proposed to be central to acute systemic viral diseases. This family of cytokines is now at the centre of investigations to understand the mechanisms of acute systemic viral diseases, including influenza and the hemorrhagic viral diseases. With its implication as the master regulator of other inflammatory cytokines in the synovial membrane, TNF has also become the major cytokine in the pathogenesis of chronic inflammatory disease. Its neutralization has proven to be a potent treatment for rheumatoid arthritis and Crohn's disease.
    MeSH term(s) Acute Disease ; Animals ; Arthritis, Rheumatoid/metabolism ; Biology/methods ; Communicable Diseases ; Cytokines/metabolism ; Humans ; Inflammation ; Macrophages/metabolism ; Malaria/metabolism ; Mice ; Models, Biological ; Plasmodium/metabolism ; Sepsis ; Tumor Necrosis Factor-alpha/metabolism
    Chemical Substances Cytokines ; Tumor Necrosis Factor-alpha
    Language English
    Publishing date 2007-06
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1330534-7
    ISSN 1359-6101
    ISSN 1359-6101
    DOI 10.1016/j.cytogfr.2007.04.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: [How is bone formed and resorbed?-- molecular mechanisms of bone formation and resorption].

    Suda, Tatsuo

    Rinsho byori. The Japanese journal of clinical pathology

    2002  Volume 50, Issue 3, Page(s) 267–272

    Abstract: ... groups independently identified core-binding protein alpha-1(Cbfa-1) as a key transcription factor ... responsible for bone resorption. The recent discovery of new members of tumor necroses factor (TNF) receptor ... ligand family has indicated the precise mechanism by which osteoblasts/stromal cells regulate osteoclast ...

    Abstract Bone has developed as a storage of calcium as well as a supporting tissue in vertebrates. Bone is a complex tissue in which resorption and formation take place throughout life. This process is called bone remodeling. Osteotrophic hormones such as 1 alpha,25-dihydroxyvitamin D3[1 alpha,25 (OH) 2D3], parathyroid hormone (PTH) and calcitonin maintain serum calcium homeostasis within a narrow range of 9 to 10 mg/dl by regulating intestinal absorption of calcium and bone remodeling. Bone tissue contains various types of cells, of which bone-forming osteoblasts and bone-resorbing osteoclasts are mainly responsible for bone remodeling. Osteoblasts arise from common progenitors with chondrocytes, myotubes and adipocytes. Recently, four research groups independently identified core-binding protein alpha-1(Cbfa-1) as a key transcription factor for osteoblast differentiation and bone formation, since Cbaf-1 knockout mice completely lacked bone formation due to maturation arrest of osteoblasts. In contrast, multinucleated osteoclasts are primarily responsible for bone resorption. The recent discovery of new members of tumor necroses factor (TNF) receptor-ligand family has indicated the precise mechanism by which osteoblasts/stromal cells regulate osteoclast formation. Osteoblasts/stromal cells express a new member of the TNF ligand family "osteoclast differentiation factor (ODF)" as a membrane-associated factor. Osteoclast progenitors which express ODF receptor(RANK) recognize ODF through cell-to-cell interaction with osteoblasts/stromal cells, then differentiate into osteoclats. Osteoprotegerin (OPG)/osteoclastogenesis inhibitory factor (OCIF) is a soluble decoy receptor for ODF. Thus, ODF, RANK and OPG/OCIF are the three key molecules for osteoclast formation. The discovery of Cbfa-1 and ODF may establish a new way to treat several metabolic bone diseases caused by abnormal bone formation and resorption.
    MeSH term(s) Bone Resorption/physiopathology ; Bone and Bones/physiology ; Calcitonin/physiology ; Dihydroxycholecalciferols/physiology ; Humans ; Osteogenesis/physiology ; Parathyroid Hormone/physiology
    Chemical Substances Dihydroxycholecalciferols ; Parathyroid Hormone ; Calcitonin (9007-12-9)
    Language Japanese
    Publishing date 2002-03
    Publishing country Japan
    Document type English Abstract ; Journal Article
    ZDB-ID 604196-6
    ISSN 0047-1860 ; 0485-1404
    ISSN 0047-1860 ; 0485-1404
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top