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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European food research and technology 63 (1932), S. 1-21 
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 92 (1933), S. 214-218 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Child's nervous system 9 (1993), S. 131-135 
    ISSN: 1433-0350
    Keywords: Supratentorial tumors ; Astrocytomas ; Ependymomas ; Secondary malignancies ; Paediatric patients
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Sixty-four malignant hemispheric tumors in children less than 15 years old were treated in the pediatric neurosurgical department of the H ôpital des Enfants Malades between 1970 and 1989. (1) These tumors evolved rapidly in most cases. However the pre-operative evolution in 20% of the patients had a duration of more than 6 months, which favors the hypothesis that at least one-fifth of these tumors result from malignant transformation of a benign lesion. This observation should prompt neurosurgeons to operate on all benign hemispheric tumors as soon as they are diagnosed. (2) Five of the 64 patients had two successive malignant diseases. In four cases the other malignant disease was an acute lymphoblastic leukemia. (3) Among the malignant hemispheric tumors, the grade III and IV astrocytomas had a dismal prognosis. As it is known from previous studies that grade I and II astrocytomas have a good prognosis in children, it can be concluded that grading these tumors is essential. By contrast, almost one out of two patients with malignant ependymoma was alive 5 years after treatment. This implies that the grading of ependymomas is of modest prognostic values. (4) The harmful effect of radiotherapy was evaluated by comparing the functional outcome of children operated for a benign hemispheric tumor to that of children operated and irradiated for a malignant hemispheric tumor.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1433-0350
    Keywords: Stereotaxy ; Fibrin gene ; Surgical approach of space-occupying lesions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract When intracerebral space-occupying lesions are small or located deeply within the brain parenchyma, it is sometimes difficult to localize them at surgery or to design the most direct and least hazardous surgical approach. Therefore, we have developed a method that combines conventional neurosurgical techniques with craniotomy using stereotactic guidance. We have used the Brown-Roberts-Wells (BRW) stereotactic system, which allows for computed tomography (CT) or magnetic resonance imaging (MRI) guidance and does not interfere with the absolute sterility mandatory each time a flap is created. Eleven patients were operated on using this method. The deep tumors were approached through a linear incision of the cerebral cortex. Then a needle, fixed in the right position on the arc system of the BRW, was inserted toward the surface of the lesion; the exposure was finally widened by inflation of a rubber balloon set on the stereotactic needle. This technique allows the two lips of the cortical incision to be glued at the end of the operation. Gluing with a fibrin glue avoids the postoperative subdural collections that often develop when the ventricle has been opened. Except for one case, the post-operative course was uncomplicated in these patients. No permanent postoperative neurological worsening was observed even after the removal of an intrathalamic tumor.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1433-0350
    Keywords: Children ; Medulloblastoma ; Psychological sequelae ; Radiotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A series of 120 medulloblastomas in children operated on between 1967 and 1987 at the Hôpital des Enfants-Malades has been reviewed in order to check whether the conclusions of our study published 10 years ago have remained valid and, in particular, to verify whether the quality of life of these patients, which had been found to be poor at the time, had improved or worsened over the years. The postoperative mortality for the whole series was 6.5% there have been no deaths in the 35 patients operated on after 1980. The overall survival rate for the 120 children was 60% at 5 years and 53% at 10 years; for the patients who completed radiotherapy, the survival rates was 73% at 5 years and 64% at 10 years. Survival rates were surprisingly better in patients treated when under 6 years of age than in older children. They were also better in girls than in boys, and in desmoplastic compared with other medulloblastomas; however, the differences were not significant. When comparing the groups after total or subtotal resection of tumors, survival rates were not significantly different, but were lower in the small group of partial resections. Cell differentiation did not influence the prognosis. Psychological sequelae were significant and worsened over the years. Five years after treatment 58% of the children showed an IQ above 80; 5 years later this group included only 15% of the patients. These psychological sequelae were related to age at the time of radiotherapy: the younger the child, the lower the final IQ. Five years after treatment, 40% of the children had a normal academic level; 5 years later this group was reduced to 11%. Ten years after treatment, 36% of the patients were unempolyed and 64% worked in a protected environment. No patient had normal employment. These disastrous results concerning the quality of life of these medulloblastoma patients justify new trials with reduced doses of irradiation over the hemispheres, at least in low-risk groups.
    Type of Medium: Electronic Resource
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  • 6
    Book
    Book
    Chichester u.a. :Wiley,
    Title: Computational methods for inviscid and viscous flow; 2
    Author: Hirsch, Charles
    Publisher: Chichester u.a. :Wiley,
    Year of publication: 1990
    Pages: 691 S.
    Series Statement: Numerical computation of internal and external flows 2
    Type of Medium: Book
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 100 (1993), S. 0 
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objective To investigate the effect of induced abortion on subsequent fertility.Design 1. Prospective cohort study of women who had an unplanned pregnancy at recruitment. 2. Retrospective study of women who had a planned pregnancy at recruitment.Setting Joint Royal College of General Practitioners/Royal College of Obstetricians and Gynaecologists study based in general practice in England, Scotland and Wales, between 1976 and 1987.Subjects 1. Prospective study: Four hundred and thirty-three women with a recruitment unplanned pregnancy ending in induced abortion (abortion group) and 1035 women with a recruitment unplanned pregnancy which ended naturally (nonabortion group). All subsequently had a planned pregnancy, or were known to be trying to conceive at some point during the follow-up2. Retrospective study: Nine thousand two hundred and ninety-nine women who presented at recruitment with a planned pregnancy.Main outcome measure The women's estimated length of planning time, expressed as a fertility rate ratio.Results Induced abortion was not related to future fertility. In the prospective study, the fertility rate ratio (FRR) of the abortion group relative to the nonabortion group was 0.94 (95% CI0.83 to 1.07, P= 0.37). This result was supported by the retrospective study, which again showed no important difference between the two groups.Conclusion Induced abortion does not appear to have an important effect on future fertility.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 60 (1993), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: The contribution of neuromelanin (NM) to the pathogenesis of Parkinson's disease (PD) has long been suspected. In particular, a correlation has been reported between the estimated cell loss in the mesencephalic dopaminergic cell groups and the percentage of NM-pigmented neurons in these cell groups. To test whether the amount of pigment per cell is a critical factor or whether the presence of NM within a neuron is sufficient to account for the degeneration of dopaminergic neurons, the NM content was measured in each neuron from representative sections throughout the ventral mesencephalon of four control subjects and four patients with PD. Intraneuronal NM was quantified by a densitometric method, using known amounts of synthetic melanin as standards. In control brains, the distribution of melanized neurons in the nigral complex showed a high proportion of lightly melanized neurons in the ventral tegmental area and the pars α and γ of the substantia nigra (SN), whereas heavily melanized neurons were mostly located in the pars β and lateralis of the SN. An inverse relationship was observed between the percentage of surviving neurons in PD compared with controls and the amount of NM they contain, suggesting that the vulnerability of the dopaminergic neurons is related to their NM content. Factors other than NM may be involved in the differential vulnerability of catecholaminergic neurons in PD. In particular, the constant topography of the cell loss suggests that cell position within the nigral complex is a key factor.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Levels of tyrosine hydroxylase (TH) were quantified in discrete areas of unfixed rat brain tissue sections using a rapid and sensitive radioimmunohistochemical method. The immunological reaction with the TH monoclonal antibody was revealed by a 35S-labelled secondary antibody and thus permitted autoradiographic detection of the enzyme. Autoradiograms were generated by apposition of tissue sections to high-sensitivity films or by dipping into autoradiographic emulsion. A detailed analysis of antibody concentration, incubation time, tissue section thickness, and exposure time of the film was undertaken to determine optimal conditions to produce a linear radiolabelling intensity with respect to the amount of antigen. Quantification of the antigen at regional levels was assessed by computer-assisted image analysis. Autoradiographic optical density of radiolabelling in brain areas was converted to enzyme concentrations by interpolation with a constructed TH calibration curve processed in parallel with tissue sections. The specificity of the labelling and the validity and reproducibility of the quantification were investigated. The distribution of TH radiolabelling was comparable to that described using immunofluorescence histochemistry or measuring TH enzymatic activity on homogenates. Using a 35S-labelled antibody, the detection of TH could be performed at the cellular level.
    Type of Medium: Electronic Resource
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