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  • Articles: DFG German National Licenses  (4)
  • 1990-1994  (4)
  • Epstein-Barr virus (EBV) genome  (2)
  • Endothelin  (1)
  • Glucose transporter  (1)
  • Osmoelastic coupling
  • 1
    ISSN: 0942-0940
    Keywords: Endothelin ; neuropeptide Y ; angiotensin II ; cerebral arteries ; cerebral circulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We have studied the effect of endothelin, an endothelium-derived peptide, on isolated canine and bovine cerebral arteries in vitro and on canine vertebral blood flow (VBF) in vivo. Endothelin produced a dose-dependent contraction of canine and bovine arterial smooth muscle with ED50 values ranging from 4 to 8 nM. The response to endothelin developed slowly and persisted as a sustained contraction. Maximal contraction by endothelin required the presence of extracellular calcium and was independent of the presence of endothelium. The maximal contraction produced by endothelin was approximately 2–3 times greater than that produced by neuropeptide Y or angiotensin II. The injection of endothelin into the vertebral artery decreased vertebral blood flow (VBF) dose-dependently without affecting systemic blood pressure or heart rate. The decrease in VBF produced by endothelin was long-lasting, like that produced by neuropeptide Y, but more potent. The present data, together with our previous study demonstrating that the intracisternal injection of endothelin induces an unusually long-lasting decrease in the basilar artery diameter angiographically, suggests that endothelin may act as a long-acting vasoconstrictor in cerebral vascular disease.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0428
    Keywords: Glucose transporter ; glucose transporter mRNA ; aging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To elucidate the cellular mechanisms of glucose intolerance associated with aging, both the protein and mRNA levels of glucose transporter isoforms were studied in the various tissues of young (7-week-old) and aged (20-monthold) rats. GluT4 (adipose/muscle-type glucose transporter) protein, which is specifically expressed in insulin-responsive tissues, was selectively decreased per milligramme of cellular membrane protein in both the epididymal fat tissues and the gastrocnemius muscle of the aged rats compared with the young rats. When the changes in total cellular membranes per gramme of tissue are taken into account, a further decrease in GluT4 protein per gramme of tissue was observed in the tissues of the aged rats compared with the young rats. The decreased amount of GluT4 protein in the fat tissues of the aged rats is probably due to the decreased protein synthesis rather than the stability, since GluT4 mRNA/μg of cellular total RNA was also decreased. In contrast, GluT4 mRNA in the gastrocnemius muscle was rather increased and a ratio of GluT4 protein/GluT4 mRNA was decreased by 70% in the aged rats, suggesting that the translational efficiency and/or stability of GluT4 protein is decreased in the skeletal muscle of the aged rats compared with the young rats. GluT2 (livertype glucose transporter) protein and mRNA in the liver were also decreased in the aged rats, while no apparent decrease in GluT1 (HepG2/brain-type glucose transporter) protein/mg of cellular membrane protein was observed in the skeletal muscle and fat tissues of the aged rats compared with the young rats. Thus, the tissue and isoform-specific alterations of glucose transporter expression are associated with aging and may contribute to glucose intolerance observed with aging.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1076
    Keywords: Key words     Granular lymphocyte ; Lymphoproliferative disease of granular lymphocytes ; Epstein-Barr virus (EBV) genome ; Severe chronic active EBV infection syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract      We describe an 11-year-old girl who initially had mild hepatosplenomegaly and then presented with abnormal expansion of CD3-negative granular lymphocytes in peripheral blood and Epstein-Barr virus (EBV) genome in the DNA obtained from the peripheral blood mononuclear cells (PBMNC). After approximately 3 years, she developed oedema, ascites, marked hepatosplenomegaly, and pancytopenia, and showed both a profile of anti-EBV antibodies of reactivated infection and a high titre of anti-cytomegalovirus antibody. Although she was treated with antibiotics, ganciclovir, and prednisolone, she died of hepatic failure. Conclusion     Careful clinical observation, periodic examination of anti-EBV antibodies, and the analysis of EBV genome from PBMNC are needed in young patients with CD3-negative lymphoproliferative disease of granular lymphocytes.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1076
    Keywords: Granular lymphocyte Lymphoproliferative disease of granular lymphocytes ; Epstein-Barr virus (EBV) genome ; Severe chronic active EBV infection syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We describe an 11-year-old girl who initially had mild hepatosplenomegaly and then presented with abnormal expansion of CD3-negative granular lymphocytes in peripheral blood and Epstein-Barr virus (EBV) genome in the DNA obtained from the peripheral blood mononuclear cells (PBMNC). After approximately 3 years, she developed oedema, ascites, marked hepatosplenomegaly, and pancytopenia, and showed both a profile of anti-EBV antibodies of reactivated infection and a high titre of anti-cytomegalovirus antibody. Although she was treated with antibiotics, ganciclovir, and prednisolone, she died of hepatic failure. Conclusion Careful clinical observation, periodic examination of anti-EBV antibodies, and the analysis of EBV genome from PBMNC are needed in young patients with CD3-negative lymphoproliferative disease of granular lymphocytes.
    Type of Medium: Electronic Resource
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