Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 31 (1988), S. 632-635 
    ISSN: 1432-0428
    Keywords: Epidermal Langerhans cells ; Type 1 (insulin-dependent) diabetes ; antigen presentation ; autoimmunity ; monocytes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Immunocompetent antigen-presenting Langerhans cells were investigated in skin biopsies of 20 short-term Type 1 (insulin-dependent) diabetic patients and compared with 17 matched normal control subjects. Langerhans cells in epidermal sheet preparations were visualized with a monoclonal anti-HLA DR antibody using indirect immunofluorescence. A significant decrease of Langerhans cells/mm2 body surface area was found in 10 patients immediately at the onset of diabetes compared to 10 patients with 6 months duration of diabetes and to normal control subjects (401±30 vs 559±43 vs 611±33, p〈0.01 and p〈0.002). There was no significant difference in the number of Langerhans cells between patients with 6 months duration of diabetes and control subjects. Examination of the most likely precursor of Langerhans cells, the blood monocytes, indicated an increase of monocyte counts in Type 1 diabetic patients after 6 months duration (344±37 cells/μl vs 191±31 in control subjects, p〈0.05) and an inverse correlation between the number of Langerhans cells in skin with the number of monocytes in peripheral blood (at onset: r=−0.73, p〈0.01, after 6 months of diabetes: r=−0.61, p〈0.05). In addition, a positive correlation between Langerhans cells and daily insulin dose was noted in patients after 6 months of diabetes (r=0.76, p〈0.01). The data suggest a loss of Langerhans cells in skin at the onset of Type 1 diabetes and that functional alterations of these and perhaps also other antigenpresenting cells may be involved in the pathogenesis of Type 1 diabetes.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-1440
    Keywords: Blutlaktat ; Buformin ; Diabetes ; Dichlorazetat ; Blood lactate ; buformin ; diabetes ; dichloroacetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In animals, dichloroacetate (DCA) which activates pyruvate dehydrogenase has been shown to diminish increased blood lactate concentrations due to biguanide treatment. In 10 maturity onset diabetics, therefore, the effect of a combined therapy with buformin and DCA (200 mg b.i.d.) was studied on blood lactate concentrations and compared with an analogous pre- and postinvestigation period of 6 days with buformin treatment alone (100 mg b.i.d.). Mean blood glucose concentrations remained the same during all 3 investigation periods. Also, neither fasting nor postprandially significant differences were found in blood lactate and ketones. In association with a standardized ergometer test, however, the rise in blood lactate was significantly smaller (p〈0.05) while the patients were on buformin plus DCA, compared to the periods when only buformin was given. Furthermore, less ketone bodies appeared to be utilized by the exercising muscle under the influence of the combined treatment (p〈0.05). These results are in good agreement with animal studies and suggest that DCA might be as effective in decreasing enhanced blood lactate concentrations in biguanide treated man as in animals.
    Notes: Zusammenfassung Im Tierversuch vermag Dichlorazetat (DCA), das die Pyruvatdehydrogenase stimuliert, erhöhte Blutlaktatspiegel unter Biguaniden zu senken. Bei 10 Erwachsenendiabetikern wurde daher der Einfluß einer Kombinationsbehandlung mit Buformin und DCA (400 mg tgl.) auf die Blutlaktatspiegel untersucht und mit einer analogen Vor- und Nachperiode einer alleinigen Buforminbehandlung (200 mg tgl.) über 6 Tage verglichen. Die Diabeteseinstellung blieb gemessen an den mittleren Blutglucosekonzentrationen während der 3 Untersuchungsperioden unverändert. Ebenfalls keine signifikanten Unterschiede, weder nüchtern noch postprandial, ergaben sich hinsichtlich der Laktat-und Ketonkörperspiegel im Blut. Im Anschluß an einen standardisierten Ergometertest jedoch stieg unter der Kombinationstherapie mit Buformin und DCA das Blutlaktat wesentlich geringer an (p〈0,05) als unter Buformin allein. Gleichzeitig wurden unter der Kombinationstherapie weniger Ketonkörper vom arbeitenden Muskel utilisiert (p〈0,05). Diese Ergebnisse stimmen mit Tierversuchen gut überein und können im Sinne einer vermehrten Pyruvatoxidation unter DCA interpretiert werden; es ist zu hoffen, daß DCA ähnlich wie beim Tier auch bei biguanidbehandelten Diabetikern einem excessiven Ansteigen der Blutlaktatspiegel vorbeugen kann.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...