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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Cytopathology 14 (2003), S. 0 
    ISSN: 1365-2303
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The aim of this study was to see whether serial cytological evaluation of various cellular abnormalities in tumours from patients receiving fractionated radiotherapy can predict radio-response in oral carcinoma. Cytological assessment was carried out in scrape smears collected prior to and during the course of radiotherapy in 68 patients with squamous cell carcinoma of the oral cavity planned for radical radiotherapy with accelerated fraction schedule. Smears were evaluated for a set of 15 radiation-induced cellular abnormalities. The relationship between the cellular alterations and the cumulative radiation dose was analysed by Kruskal–Wallis one-way anova. The results showed that among the various quantifiable changes that occur in irradiated cancer cells, karyolysis, karyorrhexis, pyknosis, cytolysis, multinucleation, micronucleation and nuclear budding show significant increase depending on the dose of radiation. The radio-resistant group of patients exhibited a lesser degree of change compared with the radio-sensitive group. This suggests that radio-resistance may be due to the defective induction of cell damage and that these cytological features may have potential use as predictive markers of radio-sensitivity in oral carcinoma.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, U.K. and Cambridge, USA : Blackwell Science Ltd
    Histopathology 33 (1998), S. 0 
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International journal of clinical oncology 5 (2000), S. 104-108 
    ISSN: 1437-7772
    Keywords: Key words Adjuvant ; Adrenocortical ; Carcinoma ; Chemotherapy ; Cisplatin ; Radiotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background. Adrenocortical carcinomas are rare tumors with an aggressive natural history. Complete surgical resection of the tumor is possible only in few patients, and even after complete resection many patients develop local recurrence of tumor or distant metastases. The role of adjuvant chemotherapy is not established, and there are no published series on the probable benefit of adjuvant cisplatin-based chemotherapy. Methods. In this retrospective study, 17 patients with completely excised adrenocortical carcinoma were given adjuvant treatment (n = 7) or placed on observation (n = 10). Adjuvant treatment included chemotherapy, using a combination of cisplatin and etoposide, and/or tumor bed irradiation. Results. All 4 patients who received adjuvant chemotherapy are alive and disease-free at a median follow-up period of 28 months. None of the 3 patients who received local radiotherapy showed evidence of local recurrence. Seven of the 10 patients placed on observation alone had disease recurrence at local (n = 2), distant (n = 1), or both local and distant sites (n = 4). Conclusion. Adjuvant chemotherapy or radiotherapy appeared to delay both local and distant relapses in completely resected adrenocortical carcinoma in this small retrospective series. Initial results of adjuvant therapy with cisplatin and etoposide in adrenocortical carcinoma are promising and warrant further studies.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 52 (1998), S. 475-480 
    ISSN: 1572-8943
    Keywords: complexes of lanthanum ; entropy of activation ; kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The kinetics and mechanism of the thermal decomposition of perchlorate, nitrate and iodide complexes of lanthanum with the Schiff base 1,2-(diimino-4'-antipyrinyl)ethane (abbreviated as GA) have been studied by TG and DTG techniques. The kinetic parameters like the activation energy, the pre-exponential factor and the entropy of activation were calculated for the major decomposition stages (Stages I and II) using Coats-Redfern equation. The rate controlling process obey ‘Mampel model’ with random nucleation with one nucleus on each particle. The kinetic parameters indicate that the ligands are loosely bound to metal ion and the activated complex formed in the decomposition reaction is more ordered than the reactants.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Genetica 49 (1978), S. 1-8 
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 61 (2000), S. 143-149 
    ISSN: 1572-8943
    Keywords: complexes ; lanthanide nitrate ; 4-N-(2′-furfurylidene)aminoantipyrine ; TG
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The kinetics and mechanism of thermal decomposition of nitrate complexes of lanthanides with the Schiff base4-N-(2′-furfurylidene) aminoantipyrine (abbreviated as FAA) have been studied by TG and DTG techniques. The kinetic data for the first stage of decomposition were calculated using the Coats-Redfern equation. The rate-controlling process obeys Mampel model representing random nucleation, with one nucleus on each particle. It is observed that there is no gradation in the values of the kinetic parameters of decomposition of the complexes.
    Type of Medium: Electronic Resource
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