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  • Articles: DFG German National Licenses  (3)
  • 2000-2004  (3)
  • Adjuvant chemo-radiotherapy  (1)
  • Key words Methamphetamine  (1)
  • Neurospora crassa
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    International journal of legal medicine 113 (2000), S. 201-207 
    ISSN: 1437-1596
    Keywords: Key words Methamphetamine ; Cardiotoxicity ; Cardiomyocyte ; Cell culture ; Hypertrophy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Notes: Abstract To investigate the direct effects of methamphetamine (MAP) on cardiac lesions seen in MAP abusers, isolated adult rat ventricular cardiomyocytes (ARCs) were exposed to MAP (0.05–1.0 mM) in medium 199 containing 10% fetal calf serum. Isolated ARCs attached to laminin-coated substrata and began to spread into polygonal shapes with pseudopodia at day 6 in normal culture. However, the cell attachment and spreading were inhibited by exposure to MAP (0.5 and 1.0 mM) for the first 7 days in culture. On the other hand, exposure to MAP (0.05 and 0.1 mM) for 7 days after a 6-day period of normal culture, led to a larger cross surface area of cells with more abundant actin bundles compared to control cells (p 〈 0.05). This development of spreading area resembled that of norepinephrine-treated ARCs. In addition, immunoreactive atrial natriuretic peptide (ANP) granules developed and accumulated around the nuclear region of ARCs exposed to MAP and the number of ANP positive cells tended to increase in a dose-dependent manner. These results suggest that chronic exposure to a high concentration of MAP may directly inhibit development of ARCs in culture and that a continuous exposure to a low concentration of MAP may facilitate the development of cellular hypertrophy. Therefore, hypertrophied cardiomyocytes in MAP abusers may be provoked by multifactorial incidents of direct and indirect actions of MAP.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1437-7772
    Keywords: Key words Granulocyte colony stimulating factor ; G-CSF-producing esophageal carcinoma ; Serum G-CSF level ; Adjuvant chemo-radiotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report here a case of granulocyte-colony stimulating factor (G-CSF)-producing esophageal carcinoma in a 66-year-old man. The International Union Against Cancer (UICC) staging was IV A, and a diagnosis of moderately differentiated squamous cell carcinoma was made, based on histopathology. The diagnosis was based on marked leukocytosis (41 500 leukocytes/mm3) and an elevated serum level of G-CSF (154 pg/ml). Immunofluorescent histochemistry and northern blot analysis confirmed the expression of G-CSF protein in cancer cells and its mRNA in cancer tissue. We paid special attention to any change in serum G-CSF levels during aggressive cancer treatment. Subtotal esophagectomy induced a significant decrease in G-CSF level. Adjuvant chemo-radiotherapy, targeting celiac lymph node metastasis, and radiotherapy, targeting solitary lung metastasis, together effectively maintained a low serum G-CSF level, despite a recurrence of the tumor in the lungs, in the form of multiple metastases, with an increase in serum G-CSF levels. The patient's clinical course suggested that serum G-CSF would be a useful marker for monitoring the effects of treatment on G-CSF-producing carcinoma.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Current genetics 37 (2000), S. 119-124 
    ISSN: 1432-0983
    Keywords: Key words Ribosomal protein gene crp-7 ; RFLP mapping ; Super induction ; Neurospora crassa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We have isolated and characterized a Neurospora crassa cytoplasmic ribosomal protein gene, named crp-7, which is found upstream of the photolyase gene. The deduced amino-acid sequence of this gene is highly homologous to the YS25 ribosomal protein of Saccharomyces cerevisiae. The crp-7 ORF consists of two exons which are separated by a short intron. The deduced polypeptide contains 87 amino acid residues and has a calculated molecular weight of 9.7 kDa. RFLP mapping showed that the crp-7 gene is located on the right arm of linkage group I. Southern blot hybridization analyses indicated that there is only one copy of the crp-7 gene in the N. crassa genome. Transcriptional elements, the Dde box, the Taq box and the CG element, that have been identified in other N. crassa ribosomal protein genes are observed in the promoter region of the crp-7 gene. The crp-7 mRNA levels were low in conidia and highest in young mycelia during vegetative growth. The mRNA levels of four r-protein genes, including the crp-7 gene, as well as the tef-1 gene encoding translational elongation factor 1α, were raised following the treatment of mycelia with a low concentration of cycloheximide. This indicates that the expression of r-protein genes is under the control of so-called super-induction.
    Type of Medium: Electronic Resource
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