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  • 1
    ISSN: 1432-0428
    Keywords: C-peptide ; insulin antibodies ; glucose tolerance ; segmental pancreatic transplantation ; pancreatic transplant rejection ; brittle diabetes mellitus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Plasma C-peptide and serum insulin antibody levels were determined in 5 diabetic patients undergoing vascularized pancreatic transplantation. The grafts functioned well at first and exogenous insulin could be withdrawn, but one to 7 weeks later the grafts were rejected. After the transplantation there was an increase in the fasting plasma C-peptide level, and B-cell stimulation with glucose or glucagon evoked a C-peptide response. Healing of ischaemic damage was reflected in an increase in the C-peptide level. During graft rejection the C-peptide level fell. Measurement of plasma C-peptide levels provides a direct index of the B-cell function of the pancreatic graft. After transplantation the insulin antibody level fell exponentially, with an apparent half life of 10–11 days, whereas the level of total IgG was variable. The results indicate that formation of insulin antibodies ceases immediately on removal of the immunogenic stimulus, that is, on withdrawal of xenogeneic insulin.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Regulatory Peptides 5 (1983), S. 154-155 
    ISSN: 0167-0115
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Talanta 21 (1974), S. 257-264 
    ISSN: 0039-9140
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Talanta 23 (1976), S. 309-312 
    ISSN: 0039-9140
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    World journal of surgery 10 (1986), S. 404-409 
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Vingt-neuf malades atteints d'un diabète de type I et d'une néphropathie diabétique au stade terminal ont bénéficié d'une transplantation pancréatique et rénale. La survie actuarielle à 2 ans des malades a été de 87%, celle du rein greffé de 78%. La survie actuarielle à 1 an et à 2 ans du pancréas greffé a été respectivement de 54% et de 40%. Une amélioration substantielle de la survie du transplant pancréatique s'est manifestée au fil du temps. C'est ainsi que de 1981 à 1983 ou 13 malades furent greffés, le taux de survie à 1 an du pancréas greffé fut de 31% alors que de 1984 à 1985 où 16 malades furent traités, il s'éleva à 75%. Cette amélioration a été attribuée à la réduction du temps de l'ischémie par réfrigération et à l'emploi d'un traitement anticoagulant intensif, ce qui entraîna une réduction sensible de la pancréatite et de la thrombose au niveau du transplant. Chez tous les malades où le pancréas greffé assuma ses fonctions, l'insulinothérapie fut interrompue et le métabolisme du glucose redevint normal. Chez les sujets dont le pancréas greffé survécu longtemps aucune aggravation de la rétinopathie ou de la neuropathie ne fut constatée. En outre, des biopsies rénales pratiquées simultanément chez 2 malades 3 ans après la transplantation ont montré l'absence d'épaississement de la membrane basale glomerulaire fait qui aurait témoigné d'une récidive de la néphropathie diabétique.
    Abstract: Resumen Veintinueve pacientes con diabetes mellitus tipo I y nefropatía terminal fueron sometidos a transplante renal y pancreático combinado. La supervivencia actuarial de los pacientes a 2 años fue de 87% y la supervivencia del transplante renal fue de 78% para la totalidad de la serie. Las tasas actuariales de supervivencia del transplante pancreático a 1 y 2 años fueron de 54% y 40% respectivamente. Una mejoría sustancial en la tasa de supervivencia del injerto ha ocurrido en el transcurso del tiempo. Así, en el primer período de la serie (1981–1983, n = 13) la tasa de supervivencia a 1 año fue de 31%, mientras en el segundo período (1984–1985, n = 16) la tasa fue de 75%. Los mejores resultados se debieron probablemente a la reducción en el tiempo de isquemias en frío y a la adopcion de un tratamiento agresivo de anticoagulación; mediante el uso de estas 2 medidas la incidencia de pancreatitis y de trombosis del injerto fue notoriamente reducida. En todos los pacientes con trnsplantes pancreáticos funcionantes fue descontinuada la terapia con insulina y se logró una homeostasis de la glucosa esencialmente normal. Entre los pacientes en quienes el transplante pancreático ha sobrevivido por un periodo mayor, no se ha demostrado continuación del proceso de retinopatía o de neuropatía. Además, las biopsias de los riñones transplantados simultáneamente en 2 pacientes a los 3 años del transplante no muestran aumento del espesor de la membrana basal del glomérulo que indique recurrencia de la nefropatía diabética.
    Notes: Abstract Twenty-nine patients with type I diabetes mellitus and end-stage diabetic nephropathy were subjected to combined renal and pancreatic transplantation. The 2-year actuarial patient survival rate was 87% and the renal graft survival rate was 78% for the whole series. The 1-year and 2-year actuarial pancreatic graft survival rates were 54% and 40%, respectively. A substantial improvement in the pancreatic graft survival has occurred with time. Thus, in the first part of the series (1981–1983, n = 13), the 1-year pancreatic graft survival was 31%, whereas in the second part of the series (1984–1985, n = 16), the figure was 75%. The improvement in results was probably due to a reduction in the cold ischemia time and the adoption of an aggressive anticoagulant treatment; using these measures the incidences of pancreatitis and graft thrombosis were much reduced. In all patients with functioning pancreatic grafts, insulin therapy was discontinued and an essentially normal glucose homeostasis was achieved. Among the patients whose pancreatic transplant has survived for a longer period, no further deterioration in retinopathy or neuropathy was found. Furthermore, biopsies from the simultaneously transplanted kidneys in 2 patients 3 years after transplantation have failed to show any increase in the thickness of the glomerular basement membrane indicative of a recurrence of diabetic nephropathy.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Space science reviews 70 (1994), S. 577-592 
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Wave Experiment, F4, on the Swedish/German satelliteFreja, is designed to measure the electric wave fields up to 4 MHz, the magnetic wave fields up to 16 kHz and the plasma density and its relative variations up to 2 kHz. Six wave signals and four density probe signals can be measured simultaneously. The wave forms of all signals are transmitted to ground without any analysis onboard. The limited TM allocation does not allow continuous sampling of the wave signals, so normally the measurements are made in snapshots of various lengths dependent on sampling frequency, etc. Continuous sampling can be made for shorter time periods by using a 6 Mbyte memory as a buffer.
    Type of Medium: Electronic Resource
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