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  • 5 Parastoffe  (1)
  • Chronic myeloid leukemia  (1)
  • Complexity  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 261 (1978), S. 153-161 
    ISSN: 1432-069X
    Keywords: 5-para-amino-compounds ; Epicutane sensitization on guinea pigs ; Fünf parasubstituierte Benzolderivate ; 5 Parastoffe ; Epicutane Sensibilisierung an Meerschweinchen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Wir haben an 160 Meerschweinchen epicutane Sensibilisierungsversuche mit parasubstituierten Benzolderivaten in 4 Konzentrationsstufen durchgeführt und die Beurteilung der Testreaktionen nach makroskopischen und histologischen Kriterien vorgenommen. Den mit jeder Substanz an 32 Tieren gewonnenen Ergebnissen ist zu entnehmen, daß Sensibilisierungen eingetreten sind mit p-Aminodiphenylamin in etwa 50%, mit p-Toluylendiamin in etwa 25%, mit p-Phenyldiamin in 62% (bei 1- und 2%iger Konzentration), mit p-Aminoazotoluol in 37% (mit 5%iger Konzentration), mit p-Aminobenzoesäure in keinem Fall. Aus dem Vergleich der Sensibilisierungsquoten ist zu schließen, daß p-Aminodiphenylamin und p-Phenylendiamin als starke Sensibilisatoren anzusehen sind, p-Aminoazotoluol und p-Toluylendiamin einen geringeren Effekt aufwiesen und p-Aminobenzoesäure unwirksam blieb.
    Notes: Summary Skin tests with derivates of para-substituted benzene were carried out at 4 different concentrations on a total of 160 guinea pigs. Results were evaluated macroscopically and histologically. Each substance was tested on 32 animals. Sensitization was obtained with p-aminodiphenylamine in about 50%, with p-toluylenediamine in about 25%, with 1% and 2% p-phenylenediamine in 62%, with 5% p-aminoazotoluene in 37%, whereas no sensitization was observed with p-aminobenzoic acid. Thus, p-aminodiphenylamine, p-toluylenediamine and p-phenylenediamine must be regarded as highly sensitizing agents, whereas p-aminoazotoluene and p-aminobenzoic acid seem to be less effective respectively non sensitizing.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0584
    Keywords: Key words BCR-ABL fusion transcripts ; Real-time quantitative polymerase chain reaction ; Philadelphia chromosome ; Chronic myeloid leukemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  The use of the real-time reverse-transcription polymerase-chain reaction (RT-PCR) method to quantify BCR-ABL transcripts before and after allogeneic transplant was prospectively studied in 65 patients with chronic myeloid leukemia (CML). The expression of the BCR-ABL transcript was determined and normalized using the glyceraldehyde-3-phosphate dehydrogenase (GAPDH) housekeeping gene product as an endogenous reference. In the single step real-time PCR assay, tenfold serial dilutions of cDNA of the K5652 cell line remained positive down to 100 pg cDNA only. However, molecular relapses of CML after transplant were only safely detectable when a nested real-time PCR assay was performed, which was able to detect 1–10 pg cDNA from a tenfold serial dilution. The median normalized BCR-ABL transcript level was measured as 0.004% in 17 patients with a molecular relapse, 0.4% in 7 patients with a cytogenetic relapse, 2.6% in 36 patients with a stable phase of CML, and 36% in 5 patients with a relapse in a blast crisis. The analyzed median normalized amount of BCR-ABL transcript differed significantly (P〈0.001) between the various disease stages. In ten CML patients with relapse, the real-time PCR method was used to monitor the response of various immunotherapies as donor leukocyte infusions, withdrawal of immunosuppression, or interferon-α application. The results of the quantitative evaluation of BCR-ABL transcripts reflected very well the clinical effect of the different applied immunotherapies. The new real-time PCR method seems to be a suitable technique for the early detection of relapse after allogeneic transplant in patients with the BCR-ABL transcript. Its ability to distinguish between molecular and cytogenetic relapse (P〈0.001) allows early therapeutic decisions.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 383 (1998), S. 26-34 
    ISSN: 1435-2451
    Keywords: Key words Sepsis ; Mediators ; Antimediators ; Modulation ; Study design ; Complexity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Sepsis, the systemic response (specific and non-specific) of the body to an infection, is an increasing clinical problem. During the last 30 years, nearly 50 clinical trials involving more than 10,000 patients have failed to demonstrate improvement of patients' outcome with different “anti-mediator” strategies. The wrong conceptional approaches to interact with the complex mediator network and flaws in study design and conduct are the main reasons for this disappointing situation. We learned, however, that the systemic host response is more than persistent uncontrolled inflammation; it is also a stimulation of the counter regulatory network. Although it is important to analyse the complex picture, we have now reached a point where more sophisticated strategies for describing complexity and novel attempts for synthesis are needed. Along this line, improved study designs (decrease of “signal-to-noise ratio”) are mandatory. In addition, secondary preventive strategies are emphasised.
    Type of Medium: Electronic Resource
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