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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 72 (1996), S. 303-306 
    ISSN: 1432-0584
    Keywords: Key words Peripheral blood stem cell ; CFU-GM ; Progenitor cell cloning assay
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Mobilized peripheral blood stem cells (PBSC) were collected in autologous plasma and acid-citrate-dextrose formula A (ACD-A) by leukaphereses using the CS3000 cell separator (Baxter) and stored at 4  °C in a refrigerator for 8 days. We have looked at the viability of the nucleated cells with the trypan blue test and the proliferation and differentiation capacity using a standardized progenitor cell cloning assay. The changes in viability, granulocyte-macrophage colony-forming units (CFU-GM), erythroid burst-forming units (BFU-E), and mixed-lineage colony-forming units (CFU-GEMM) were determined daily during the storage period. Viability was 90.8% (SD 8%) at day 0 and declined to a mean of 69.5% (SD 15.5%) at day 8. CFU-GM decreased to 47% (SD 28.7%), CFU-GEMM to 48% (SD 42.2%), and BFU-E to 40.1% (SD 18.4%) after 6 days. After 5 days of storage the mean viability was 79.7% (SD 17.8%), whereas the mean CFU-GM were 65.3% (SD 28.4%) the mean CFU-GEMM were 61.8% (SD 30.4%) and the mean BFU-E were 55.1% (SD 18.2%). At day 4 viability was still 82.5% (SD 17.0%), recovery of CFU-GM was 78.5% (SD 28.8%), recovery of CFU-GEMM was 70.7% (SD 40.4%) and recovery of BFU-E was 65.0% (SD 17.5%). These data show, that PBSC can be stored safely over at least 5 days at 4  °C while the patient receives high-dose chemotherapy.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 26 (1973), S. 84-86 
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0584
    Keywords: Key words Multiple myeloma ; Prognostic marker ; Neural cell adhesion molecule ; β2-Microglobulin ; Interleukin-6
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  A retrospective study was carried out to determine the diagnostic and prognostic value of the soluble form of the embryonal neural cell adhesion molecule NCAM (CD56) in paraproteinemia. NCAM, β2-microglobulin, and interleukin-6 levels were measured in the sera of 170 patients with paraproteinemia. Of these, 125 had multiple myeloma, 20 Waldenström's disease, and 25 monoclonal gammopathy of unknown significance. Serum NCAM proved superior to β2-microglobulin and interleukin-6 in distinguishing multiple myeloma from paraproteinemias of various causes, with a high specificity of 95.5% in detecting multiple myeloma, although with a low sensitivity of 40%. In multiple myeloma NCAM is significantly correlated with β2-microglobulin, paraproteinemia, and low albumin levels. For the determination of tumor load β2-microglobulin levels accord best with the Salmon and Durie classification scheme. When patients are grouped according to their clinical course, the disease development is reflected better by NCAM than by β2-microglobulin or interleukin-6. Survival data indicate that all three markers have prognostic potential. Prognostic accuracy with respect to overall survival is best with β2-microglobulin.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 122 (1996), S. 356-359 
    ISSN: 1432-1335
    Keywords: Lung cancer ; Cell lines ; Vitamin D receptor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The active metabolite of vitamin D 1,25-dihydroxycholecalciferol is a hormone-like agent that regulates cell differentiation and proliferation. Various vitamin D derivatives have been shown to induce differentiation in neoplastic cells. The prerequisite for any hormone action is the presence of its receptor. We studied the expression of vitamin D receptor in human lung cancer cell lines and in primary lung cancer tissue. Employing the polymerase chain reaction, 10 out of 11 cell lines stemming from small-cell lung cancer and 15 out of 15 cell lines stemming from non-small-cell lung cancer demonstrated vitamin D receptor expression. An immunohistochemical analysis, using a specific monoclonal antibody, demonstrated vitamin D receptor protein expression in 31 out of 117 (26%) primary small-cell lung cancer cases tested. Positive cells exhibited a nuclear reaction pattern. Twenty-one out of 37 primary non-small-cell lung cancer cases, particularly adenocarcinomas (9/14) and squamous-cell carcinomas (10/15), exhibited vitamin D receptor. Results indicate that a subset of lung cancer cases may be susceptible to the differentiating effects of vitamin D analogues.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 52 (1974), S. 874-880 
    ISSN: 1432-1440
    Keywords: Vitamin B 12 ; Imerslund-Gräsbeck-Syndrome ; megaloblastic anemia ; immune deficiency ; hypogammaglobulinemia ; Vitamin B 12 ; Imerslund-Gräsbeck-Syndrom ; megaloblastäre Anämie ; Antikörpermangel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird über einen 17jährigen Jungen mit megaloblastärer Anämie und benigner Proteinurie seit frühester Kindheit berichtet. Bei normalem Magensaft mit normalem Gehalt an Intrinsic Faktor wurde als Ursache der Anämie eine selektive Malabsorption für Vitamin B 12 nachgewiesen. Es handelt sich um den 66. der Weltliteratur und den 3. aus Deutschland berichteten Fall eines sog. Imerslund-Gräsbeck-Syndroms. Die Besonderheit besteht in einem bisher in dieser Kombination nicht beobachteten Antikörpermangelsyndrom (IgG und IgA), welches auch bei der Mutter und bei den beiden Schwestern nachweisbar war.
    Notes: Summary The case of a 17-year old boy with megaloblastic anaemia and benign proteinuria since early childhood is reported. Normal gastric juice with normal content of intrinsic factor was found. A selective malabsorption for vitamin B12 was detected as the cause of the anaemia. It is the 66th case in the world literature and the 3rd case recorded from Germany of the so-called Imerslund-Gräsbeck syndrome. The special features of this case were a hitherto not observed combination with a defect in antibody formation (IgG and IgA). The same defect was detected in the mother and the two sisters of the patient.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1569-8041
    Keywords: biology ; lung cancer ; molecular biology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Clinical and experimental medicine 153 (1970), S. 297-307 
    ISSN: 1591-9528
    Keywords: Phytohemagglutinin ; Serum proteins ; Lymphocyte culture ; Phythämagglutinin ; Serumproteine ; Lymphocytenkultur
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Wirkung von Serumfraktionen auf das Wachstum PHA-stimulierter Lymphocyten wurde auf Grund ihres RNS-Stoffwechsels beurteilt. Die Chromatographie von lipoproteinfreiem Serum über Sephadex G 200 ergab drei Serumfraktionen. Fraktion I stimulierte in geringen Konzentrationen und hatte in hohen Konzentrationen einen hemmenden Effekt. Durch weitere Fraktionierungen und durch die Verwendung von Mangelserum konnte die wachstumsfördernde Wirkung auf α2-Makroglobulin zurückgeführt werden. Einen hemmenden Effekt zeigte die Serumfraktion II, während Fraktion III deutlich stimulierend wirkte. Mit Hilfe eines Mangelserums konnte der wachstumsfördernde Effekt von Fraktion III auf α1-Antitrypsin zurückgeführt werden.
    Notes: Summary The influence of serum fractions on PHA stimulated lymphocytes has been determined by mRNA synthesis. Serum without lipoproteins was fractionated by Sephadex G 200 chromatography. Fraction I had a stimulating effect in low concentrations and an inhibiting one in high doses. The growth promoting effect of Fraction I was due to α2-macroglobulin. This was indicated by purified α2-macroglobulin and α2-macroglobulin deficient serum. Fraction II had a strong inhibiting effect, whereas Fraction III contained a growth promoting protein. The growth potential was markedly reduced in α1-antitrypsin deficient serum. For this reason the stimulating effect of Fraction III may be caused by α1-antitrypsin.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Clinical and experimental medicine 153 (1970), S. 308-323 
    ISSN: 1591-9528
    Keywords: Lymphocytes ; PHA ; Standardization of lymphocyte-cultures ; Serumproteins ; Lymphocyten ; PHA ; Standardisierung von Lymphocytenkulturen ; Serumproteine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wurde die Präcipitation von Serumproteinen durch PHA und der Einfluß der Präcipitation auf den RNS-Stoffwechsel menschlicher Lymphocyten untersucht. Die präcipitierten Serumproteine konnten als α2-Makroglobulin, IgM und ein Serum-β-Lipoprotein identifiziert werden. Durch Chromatographie von PHA-P(Difco) über SE-Sephadex-C50 konnte ein proteinreiches, leukagglutinierendes Mitogen von einem proteinarmen, erythrocytenagglutinierenden Mitogen getrennt werden. Die proteinarme Fraktion trägt die gesamte präcipitierende Aktivität von PHA. Im Gegensatz zu unfraktioniertem PHA zeigten die Dosiskurven der genannten zwei PHA-Fraktionen nur ein Wirkungsoptimum. Die Kinetik der Präcipitation war dem Ablauf einer Antigen-Antikörper-Präcipitation vergleichbar. Gewaschene Präcipitate aus PHA und Serumproteinen wirkten in niedrigen Dosen stimulierend auf den RNS-Stoffwechsel von Lymphocyten. Die gleichen niedrigen Dosen entstehen in Lymphocytenkulturen (15% Serum im Ansatz) während des zweiten Dosismaximums einer PHA-Dosiskurve (50–200 μg/ml). Wurden Kulturen ohne präcipitierbare Serumproteine angesetzt, so war nur das erste Maximum des RNS-Stoffwechsels bei 6,25 μg PHA/ml vorhanden. Mit zunehmender Präcipitation bzw. bei Zusatz entsprechend größerer Mengen an gewaschenem Präcipitat war eine Hemmung des RNS-Stoffwechsels zu beobachten. Es wird versucht, den Angriffsort der verschiedenen PHA-Komponenten näher zu charakterisieren, und es wird die Bedeutung der Serumpräcipitation für die Standardisierung von Lymphocytenkulturen und für die Interpretation von in vivo-Experimenten mit PHA diskutiert.
    Notes: Summary The precipitation of serum proteins by PHA and the effect of this precipitation on RNA-synthesis of human lymphocytes has been investigated. α2-makroglobulin, IgM and a serum-β-lipoprotein were shown to be the precipitated proteins. PHA-P (Difco) was seperated by chromatography on SE-Sephadex-C50 into two different mitogens: a protein-rich, leukagglutinating one and another erythroagglutinating one with a low protein moiety. This low-protein-fraction exhibited the complete precipitating activity of PHA. While the nonfractionated PHA revealed two dosedependant mitogenic optima, the 2 isolated fractions did exhibit only one. The kinetics of the serumprotein precipitation was quite similar to an antigen-antibody precipitation. Sufficiently washed precipitates of PHA and serum proteins did stimulate the RNA-metabolism of cultured lymphocytes using minute doses. Those minute doses of precipitate were shown to be produced in lymphocyte cultures during the second dose optimum (culture with 15% serum, 50–200 μg PHA/ml). Cultures without precipitated proteins lacked this second peak. As well increased precipitation as increased concentrations of washed precipitate resulted in a significant decrease of RNA-synthesis. It was tried to characterise the site of action of the mitogenic PHA-components. The meaning of the results will be discussed with respect to the standardization of lymphocyte cultures and opposing in vivo experiments with PHA.
    Type of Medium: Electronic Resource
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