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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 60 (1982), S. 823-828 
    ISSN: 1432-1440
    Keywords: Diabetes mellitus ; Plasma norepinephrine ; Blood pressure regulation ; Diabetes mellitus ; Plasmanoradrenalin ; Blutdruckregulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Das Verhalten von Blutdruck, Plus und Plasmanoradrenalin während verschiedener Stimulationsmanöver sympathisch nervöser Aktivität sowie das vaskuläre Reaktionsvermögen auf infundiertes Noradrenalin (50, 100 und 200 ng/kg−1/min−1,t=15 min) wurde bei 17 Diabetikern und 6 gesunden Probanden untersucht. Unterschieden wurden Diabetiker 1) ohne Zeichen autonomer Dysfunktion und ohne periphere Neuropathie (n=6), 2) ohne Zeichen autonomer Dysfunktion jedoch mit schwerer peripherer Neuropathie (n=6) und 3) mit autonomer Dysfunktion, mit (n=3) und ohne (n=2) peripherer Neuropathie. Während eines „Cold pressor tests“ (2 min), mechanischer Hautirritation (10 min) und Orthostase (10 min) zeigten Diabetiker ohne klinische Zeichen autonomer Dysfunktion ein den gesunden Kontrollpersonen vergleichbares Verhalten von Blutdruck, Plus und Plasmanoradrenalin, während Diabetiker mit autonomer Dysfunktion unabhängig vom Bestehen einer peripheren Neuropathie während der Orthostase, nicht jedoch während des „Cold pressor tests“ und mechanischer Hautirritation eine deutlich herabgesetzte Noradrenalinfreisetzung (P〈0.05) aufwiesen. Normalpersonen und Diabetiker ohne autonome Dysfunktion unterschieden sich bezüglich ihres Blutdruckverhaltens während Noradrenalininfusion nicht, während Diabetiker mit autonomer Dysfunktion auf die Verabreichung von exogenem Noradrenalin (200 ng/kg/min) mit einem gegenüber Normalpersonen verstärkten (P〈0.05) Blutdruckanstieg reagierten. Störungen der Noradrenalinfreisetzung und der adrenergen Blutdruckregulation scheinen somit, unabhängig vom Bestehen einer peripheren Neuropathie, nur bei Diabetikern mit klinischen Zeichen autonomer Dysfunktion aufzutreten. Der Nachweis derartiger Störungen gelingt jedoch nur bei Anwendung von Stimuli größerer Intensität wie Orthostase oder Infusion einer hohen Noradrenalindosis.
    Notes: Summary Changes in blood pressure (BP) and plasma norepinephrine (NE) following various stimuli of the sympathetic nervous system were studied in six healthy subjects and in 17 diabetic patients. The latter were subdivided in three groups: (1) six patients with neither peripheral neuropathy nor autonomic dysregulation, (2) six patients with severe peripheral neuropathy without autonomic dysregulation, and (3) five patients with autonomic dysregulation, three of whom suffered also from peripheral neuropathy. The following procedures were performed: (1) cold pressor test (2 min), (2) mechanical irritation of the skin by suction (0.75 kg/cm2, 10 min), (3) orthostasis (10 min), and (4) i.v. infusion of NE (50, 100, 200 ng kg−1 min−1 for 15 min each). Both the stimulated endogenous plasma NE levels and BP response to exogenous NE were the same in normal subjects, in diabetic controls and in diabetics with peripheral neuropathy without autonomic dysregulation. In contrast, diabetics with postural hypotension showed a less pronounced release of NE to standing (P〈0.05), but not to cold pressor test and mechanical skin irritation. Furthermore, they showed increased vasoreactivity to the highest dose (P〈0.05), but not to the lower doses of exogenous NE. Thus NE release and adrenergic BP regulation seem to be altered only in diabetics with clinical signs of autonomic dysregulation. These alterations can only be evaluated when patients are exposed to stimuli of higher intensity, such as orthostasis or infusion of a high NE dose.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1440
    Keywords: Glycosylated hemoglobin ; Hemolytic anemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Reduced levels of glycosylated hemoglobins (GHb) have been found to be closely related to red cell survival. We therefore studied the relation of this parameter to the clinical applicability in patients with hemolytic disease (n=20). During a 5-week period we repeatedly measured severity of anemia, i.e., hemoglobin (Hb), packed red cell volume (VPRC), and red blood cell count (RBC), as well as reticulocytosis and parameters of red cell destruction such as serum concentration of lactic dehydrogenase (LDH) and bilirubin together with GHb. There was a weak correlation between simultaneously measured GHb and RBC (r=0.5,P=0.02), but none was demonstrable between GHb and Hb, VPRC, reticulocyte counts, LDH, or bilirubin. A much closer correlation, however, was found between actual GHb levels and RBC determined 3–5 weeks previously (r=0.72,P=0.001), as well as Hb (r=0.56,P=0.015), VPRC (r=0.57,P=0.013), reticulocyte counts (r=−0.63,P=0.006), LDH (r=−0.53,P=0.02), and serum bilirubin concentrations (r=−0.55,P=0.016). GHb was also significantly decreased in patients with consistently low values of reticulocytes when red cell destruction was demonstrable. These result show that GHb is a measure of red cell destruction and restitution, and thus may be useful for long-term monitoring of patients with hemolytic disease.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1440
    Keywords: Cimetidine ; Pirenzepine ; Parathyroid hormone ; Calcitonin ; Cimetidin ; Pirenzepin ; Parathormon-Calcitonin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In letzter Zeit wurde über den Langzeiteffekt von Cimetidin, eines Histamin2-Rezeptorantagonisten, erhöhte PTH Serumkonzentrationen beim sekundären1 und primären Hyperparathyroidismus2 zu senken, berichtet. Dabei wurde auch eine Verbesserung des klinischen Bildes beobachtet. Wir haben die Wirkung von Cimetidin und Pirenzepin auf den Plasmaspiegel von PTH und CT bei Patienten mit sekundären Hyperparathyroidismus in einem Kurzzeitversuch geprüft. Eine signifikante Senkung der PTH Serumkonzentration wurde mit Cimetidin nach 30 min für die Dauer von 30 min gesehen. Mit Pirenzepin zeigte sich erst 60 min nach der Infusion ein 60 min lange anhaltender signifikanter Abfall der PTH Serumkonzentration. Der Calcitonin Serumspiegel war nur mit Cimetidin signifikant senkbar.
    Notes: Summary Long-term administration of cimetidine, a histamine2 receptor antagonist, has been reported to normalize elevated parathyroid hormone (PTH) concentrations in patients with secondary [1] and primary hyperparathyroidism [2] and even to improve the clinical symptoms. We have compared the effect of cimetidine and pirenzepine on PTH and calcitonin (CT) plasma levels in a short-term trial on patients with secondary hyperparathyroidism. After cimetidine a significant effect on PTH was seen within 30 min lasting 30 min and after pirenzepine, within 60 min and lasting 60 min. The effect on CT was only significant after cimetidine.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1440
    Keywords: Posttransfusion purpura ; Thrombocytopenia ; Blood transfusion ; Platelet antibodies ; HLA antigens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirteen cases of posttransfusion purpura (PTP) which were diagnosed in Germany and Austria from 1977–1985 are described. All patients were women with a mean age of 58.6 years (range, 36–77 years). All but one had been pregnant and received blood transfusions 2 to 12 days prior to the onset of PTP. The thrombocytopenic purpura was always severe with a nadir of platelet counts below 10×109/l and lasted between 3 and 60 days. All patients recovered from PTP. Optimal therapy consisted of administration of high-dose IgG. Twelve of the 13 patients had developed platelet-specific Zwa antibodies (eight of them together with HLA antibodies), in one Zwa positive individual only HLA antibodies were detectable. Five of six HLA-DR typed patients carried DR3 which is considered an immunogenetic risk factor in PTP. Clinical awareness of this rare, but serious iatrogenic transfusion complication is prerequisite for prompt diagnosis and improved therapy.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1076
    Keywords: Key words: Neonatal allo-immune thrombocytopenia – HPA-1 b – HLA class-I and class-II molecules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. We report a case of neonatal allo-immune thrombocytopenia due to fetomaternal human platelet antigen (HPA)-1 incompatibility. Anti-HPA-1 b antibodies were detectable in maternal serum. Repeated treatment of the infant with high-dose IgG effectively raised platelet counts transiently, but the patient remained thrombocytopenic for more than 6 weeks. Serological and DNA analysis revealed that the mother was homozygous HPA-1 a and the father homozygous HPA-1 b.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1076
    Keywords: Neonatal allo-immune thrombocytopenia ; HPA-1b ; HLA class-I and class-II molecules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a case of neonatal allo-immune thrombocytopenia due to fetomaternal human platelet antigen (HPA)-1 incompatibility. Anit-HPA-1b antibodies were detectable in maternal serum. Repeated treatment of the infant with high-dose IgG effectively raised platelet counts transiently, but the patient remained thrombocytopenic for more than 6 weeks. Serological and DNA analysis revealed that the mother was homozygous HPA-1a and the father homozygous HPA-1b
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Materials Research 18 (1988), S. 121-140 
    ISSN: 0084-6600
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 32 (1990), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Accessory cells (AC) are believed to play two major roles in T-cell activation: they cross-link certain stimuli such as monoclonal antibodies, and they provide needed cytokines. To differentiate between these roles, we cross-linked OKT3 on highly purified T-cells by means of Fc-specific goat anti-mouse IgG-coated polystyrene heads and studied T-cell activation after exogenously added cytokines. Following addition of AC, rIL-2. or rIL-1. CD25 was up-regulated, and the cells proliferated and became cytotoxic. Both CD4+ and CD8+ cells were activated in the presence of AC or rIL-2. In contrast, only CD4+ CD29+ CD4SRA cells responded in the presence of rIL-1. Anti-IL-2R p55 (anti-TAC) monoclonal antibody inhibited the proliferative response supported by rIL-2 or rIL-1. To inhibit proliferation of cells stimulated in the presence of AC. anti-TAC needed to be supplemented with anti-IL-6 antibodies, or to be added in a 10-fold higher concentration. Cultures with AC produced larger amounts of IL-2 than those supplemented with rIL-1. Only AC-containing cultures also produced detectable amounts of IL-6. These findings combined with the observation that none of 2000 purified T cells counted in each of six independent experiments expressed MHC class II antigens strongly suggest that rIL-I can activate T cells directly, rather than indirectly by potentiating the function of contaminating AC.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Surface & Coatings Technology 39-40 (1989), S. 521-529 
    ISSN: 0257-8972
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Thin Solid Films 118 (1984), S. 85-92 
    ISSN: 0040-6090
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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