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  • Chemistry  (39)
  • Mitochondria  (2)
  • Multiple myeloma  (2)
  • 1
    ISSN: 1432-0584
    Schlagwort(e): Key words PBPC mobilization ; CD34+ cells ; G-CSF ; Malignant lymphoma ; Multiple myeloma
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract  We retrospectively analyzed factors influencing PBPC mobilization during steady-state hematopoiesis in 52 patients with malignant lymphoma (n=35) or multiple myeloma (n=17) who received 77 cycles of G-CSF (12.5–50 μg G-CSF/kg/day). For 15 of these patients, the first mobilization cycle (12.5 μg G-CSF/kg/day) was followed by a second course with an increased dose of G-CSF (25 or 50 μg/kg/day). Leukapheresis was started on day 4, about 2 h after s.c. G-CSF administration, and repeated on 2–5 consecutive days. CD34+ cells were determined by flow cytometry in each apheresis product and in the peripheral blood prior to G-CSF administration, beginning on day 4. Colony assays were performed on cryopreserved samples prior to autografting. In the 15 patients receiving two mobilization cycles the higher G-CSF dose was associated with higher levels of CD34+ cells, a higher mean yield of CD34+ cells per apheresis (p〈0.05), and a higher percentage of successful (〉2×106 CD34+ cells/kg) collections (p=0.058). Patients with limited previous cytotoxic therapy (n=19, up to six cycles of a standard regimen such as CHOP and/or less than 20% marrow irradiation) who received a daily dose of 12.5 μg G-CSF/kg had higher levels of circulating CD34+ cells, a higher mean yield of CD34+ cells per apheresis (p〈0.05), and a higher percentage of successful collections (p〈0.05) compared with patients previously treated with more intensive radiochemotherapy (n=15). Ten of 20 patients (50%) who failed during the first cycle were successful during subsequent cycles with escalated doses of G-CSF. Trough levels of circulating CD34+ cells on day 4 were predictive for success or failure to achieve 〉2×106 CD34+ cells/kg, especially in heavily pretreated patients. In conclusion, a daily dose of 12.5 μg G-CSF/kg seems sufficient to mobilize PBPC during steady-state hematopoiesis in the majority of patients who have received limited previous radiochemotherapy. Higher doses of G-CSF, up to 50 μg/kg/day, mobilize more PBPC and should be considered for patients previously treated with intensive radiochemotherapy or those failing to mobilize sufficient numbers of CD34+ cells with lower doses of G-CSF.
    Materialart: Digitale Medien
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  • 2
    ISSN: 1432-1076
    Schlagwort(e): Myopathy ; Convulsions ; Mitochondria ; Respiratory chain ; Coenzyme Q
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A patient is presented who had therapy-resistant epileptic seizures from the 7th day of life. Examination at the age of 17 months revealed a mentally retarded boy with epileptic seizures, generalised myoclonic contractions, and abnormal ocular movements. A cerebral CT scan showed central and cortical atrophy. Lactate levels in serum, cerebrospinal fluid and urine were elevated, the pyruvate level was raised in serum. A quadriceps muscle biopsy revealed aspecific morphologic signs of a myopathy. Biochemical analysis showed decreased substrate oxidation rates in the mitochondria associated with low rates of ATP production. Total and free carnitine levels were decreased. Investigation of the respiratory chain revealed a defect in the proximal part of respiratory chain revealed a defect in the proximal part of respiratory chain involving the region of coenzyme Q. Based on clinical and chemical data it is likely that the patient is suffering from a multi-system disorder.
    Materialart: Digitale Medien
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  • 3
    ISSN: 1432-1076
    Schlagwort(e): Myopathy ; Mitochondria ; Respiratory chain ; Succinate cytochrome c reductase
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A boy presented suffering from generalised weakness, exercise intolerance and lactic acidosis. The weakness became evident at 2 years. A cerebral CT-scan showed cerebellar atrophy and central and peripheral atrophy of both hemispheres. With trichrome staining about 20% of the muscle fibres showed large areas containing redstaining granular material. Electron microscopic examination showed that this material consisted of areas of mitochondrial proliferation, most of the mitochondria having abnormal ultrastructural characteristics. Pyruvate dehydrogenase complex and citric acid cycle activities were determined by measuring 14CO2 production from various labelled substrates. Diminished oxidation rates were found with the patient's muscle homogenate for all substrates tested, indicating a defect in the respiratory chain. The cytochromes were present in normal quantities. Succinate cytochrome c reductase activity was very decreased. Carnitine concentration was decreased in serum and in muscle as well.
    Materialart: Digitale Medien
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    Journal of molecular medicine 57 (1979), S. 769-777 
    ISSN: 1432-1440
    Schlagwort(e): Multiple myeloma ; Acute leukaemia ; Secondary neoplasia ; Life table method ; Multiples Myelom ; Akute Leukämie ; Zweitneoplasie ; Sterbetafelmethode
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Es werden die Ergebnisse einer Follow-up-Studie vorgelegt, in deren Rahmen insgesamt 112 Plasmozytom-Patienten maximal 11 Jahre lang unter klinischer Beobachtung standen. 3 Patienten entwickelten innerhalb des Beobachtungszeitraumes eine akute Leukämie. Hierbei handelte es sich um je einen Fall von akuter myeloblastischer Leukämie, myelomonozytärer Leukämie und Erythroleukämie. Zur Schätzung der Inzidenz von akuter Leukämie bei Ausgangsbefund Plasmozytom wird eine erweiterte Sterbetafelmethode benutzt. Aus unseren Daten erhielten wir hiermit als Wahrscheinlichkeit, daß bei einem Plasmozytompatienten irgendwann im weiteren Krankheitsverlauf eine akute Leukämie auftritt, die Zahl 5,9%. Dieses Ergebnis wird auf Grund einer ausführlichen methodischen Diskussion als Hinweis auf ein stark erhöhtes AL-Risiko bei Plasmozytom-Patienten gewertet. In einer Literaturübersicht werden wichtige Daten von 100 Fällen mit der Assoziation von Plasmozytom und akuter Leukämie zusammengestellt.
    Notizen: Summary The results of a follow-up study of 112 patients with multiple myeloma are presented. Three of these patients developed acute leukaemia during the respective period of clinical observation (maximum: 11 years) — one case of acute myeloblastic leukaemia, myelomonocytic leukaemia and erythroleukaemia, myelomonocytic leukaemia and erythroleukaemia, respectively. For estimating the incidence of acute leukaemia in the presence of multiple myeloma an extended life table method was applied. On the basis of our data this method gave a probability of 5.9% for a patient to develop acute leukaemia at any time after the diagnosis of multiple myeloma. In a statistical discussion this result is considered to confirm the assumption of a highly increased AL-risk in patients with multiple myeloma. In a survey of the literature some important data of 100 cases with the association acute leukaemia — multiple myeloma are reported.
    Materialart: Digitale Medien
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  • 5
    Digitale Medien
    Digitale Medien
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 61 (1978), S. 960-977 
    ISSN: 0018-019X
    Schlagwort(e): Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: In order to investigate molecules and their interactions at interfaces we have developed a new spectroscopic technique based on integrated optics. A significant increase in sensitivity has been predicted and observed. We report here the details of the method and some preliminary spectra of organic dye molecules on thin films.
    Zusätzliches Material: 11 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    ISSN: 0009-286X
    Schlagwort(e): Chemistry ; Industrial Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Die Apparatur für die flammenphotometrische Bestimmung der Alkalimetalle, insbesondere des Lithiums, wird kritisch beschrieben. Störungen durch Grundsubstanz, Begleitelemente und Lösungsmittel werden untersucht. Angaben über zweckmäßige Arbeitsweise, Reproduzierbarkeit, Genauigkeit und Schnelligkeit der Methode werden gemacht. Ergebnisse von Amblygonit-Analysen werden mitgeteilt.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
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  • 7
    ISSN: 0887-624X
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Poly[(4-N-ethylene-N-ethylamino)-α-cyanocinnamate] was prepared by solution esterification of (4-N-ethyl-N-(2-hydroxyethyl) amino)-α-Cyanocinnamic acid and by melt transesterification of ethyl (4-N-ethyl-N-(2-hydroxyethyl) amino)-α-cyanocinnamate. The melt transesterification generally yielded polymer with a number-average molecular weight of about 10,200 by gel permeation chromatography (GPC) versus polystyrene standards. The polymer was found to be amorphous with a glass transition temperature of about 103°C by differential scanning calorimetry (DSC). The solution esterification generally gave a polymer with a number-average molecular weight of about 2200 by GPC versus polystyrene standards. This polymer was found to have a glass transition temperature varying between 60 and 90°C by DSC. The infrared (IR) spectrum of the polymer made from both methods were analyzed in detail. The 1H- and 13C-NMR spectra of the meltsynthesized ethyl cinnamate derivative polymer are consistent with the reported structure.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 8 (1957), S. 177-177 
    ISSN: 0947-5117
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 47 (1996), S. 157-158 
    ISSN: 0947-5117
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau
    Notizen: Fracture of prestressing steel wires due to application of chloride containing repair mortar
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
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  • 10
    ISSN: 0947-5117
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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