Bibliothek

feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
Materialart
Erscheinungszeitraum
  • 1
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    International journal of dermatology 39 (2000), S. 0 
    ISSN: 1365-4632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: A 44-year-old Caucasian man was admitted in December 1995 for the treatment of generalized skin pruritus. The patient had a history of cirrhosis felt to be caused by chronic ethanol abuse and renal insufficiency. He had undergone orthotopic liver transplantation in January 1991. Physical examination revealed numerous, fleshy, nontender nodules protruding from the face ( 〈link href="#f5-1"〉Fig. 1), trunk, and extremities, as well as axillary freckling. The patient was certain that the lesions had appeared 2–-3 months after his liver transplant. Wood's lamp examination revealed several café-au-lait macules. Ophthalmic examination was remarkable for Lisch nodules ( 〈link href="#f5-2"〉Fig. 2).〈figure xml:id="f5-1"〉1〈mediaResource alt="image" href="urn:x-wiley:00119059:IJD841-5:IJD_841_f5-1"/〉A representative clinical lesion as a fleshy, non-tender nodule on the neck. Also a few very small lesions are barely visible on the mandible line〈figure xml:id="f5-2"〉2〈mediaResource alt="image" href="urn:x-wiley:00119059:IJD841-5:IJD_841_f5-2"/〉Iris hamartomas (Lisch nodules) in our patientTwo skin nodules on contralateral sides of the body were biopsied. Histologic examination of the nodules revealed a normal epidermis and a nonencapsulated dermal mass composed of thin, wavy eosinophilic fibers lying in loosely textured strands. Interdispersed among these strands were cells with spindle-shaped or oval nuclei and an increased number of mast cells. The histology was typical of a neurofibroma ( 〈link href="#f5-3"〉Fig. 3).〈figure xml:id="f5-3"〉3〈mediaResource alt="image" href="urn:x-wiley:00119059:IJD841-5:IJD_841_f5-3"/〉Histopathologic features of a cutaneous nodule demonstrating normal epidermis overlying a non-encapsulated dermal mass (left panel), with loosely-textured thin wavy eosinophilic fibers and strands, containing cells with spindle-shaped or oval nuclei (right panel)Computed tomography (CT) scans of the chest, abdomen, and pelvis taken before and after the transplant surgery did not reveal any internal plexiform neurofibromas.A thorough review of the patient's medical record dating to shortly after birth made no mention of any skin nodules or hyperpigmentation prior to the transplant. There was no family history of neurofibromatosis.The patient's pruritus resolved with UVB light therapy and hemodialysis. Currently, the patient is on hemodialysis with no clinical progression of his neurofibromatosis.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Neurochemical research 23 (1998), S. 227-233 
    ISSN: 1573-6903
    Schlagwort(e): Cytochrome P450 ; fatty acid oxidation ; omega-oxidation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The accumulation of dicarboxylic acids is a prominent feature of inborn and toxin induced disorders of fatty acid metabolism which are characterized by impaired mental status. The formation of dicarboxylic acids is also a critical step in liver in the induction of intracellular fatty acid binding proteins and the proliferation of peroxisomes. In order to understand what potential roles dicarboxylic acids have in brain, we examined the extent of omega-oxidation in rat brain. Homogenates of rat brain catalyze the omega-oxidation of monocarboxylic acids with a specific activity of between 0.87 and 5.23 nmol/mg of post-mitochondrial protein/h, depending on the substrate. The activity is remarkably high, between one-fourth and 4 times the activity found in rat liver, depending on the chain length of the substrate. Specific activity increases with increasing chain length of the substrate. The omega-oxidation of palmitic acid is linear over a range of 0.125–3.0 mg of protein and 5–50 μM substrate for up to 45 minutes of incubation. The product of omega-oxidation in brain is almost exclusively dicarboxylic acid. Cultured rat neurons, astrocytes, and oligodendrocytes all contain omega-oxidation activity. Western blots of rat brain homogenate demonstrate a protein that is recognized by antibody to rat liver CYP4A omega-hydroxylase. These results demonstrate that the omega-oxidative pathway is prominent in brain and could play a role in brain fatty acid metabolism.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...