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  • 2000-2004  (5)
  • 1950-1954
  • locus of control  (2)
  • metastatic breast cancer  (2)
  • Ab initio calculations  (1)
Material
Years
  • 2000-2004  (5)
  • 1950-1954
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical chemistry accounts 104 (2000), S. 195-198 
    ISSN: 1432-2234
    Keywords: Key words: Symmetry-adapted perturbation theory ; Three-body interactions ; Ab initio calculations ; (H2O)2HCl
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract.  The nature and importance of nonadditive three-body interactions in the (H2O)2HCl cluster have been studied by the supermolecule coupled-cluster method and by symmetry-adapted perturbation theory (SAPT). The convergence of the SAPT expansion was tested by comparison with the results obtained from the supermolecule coupled-cluster calculations including single, double, and noniterative triple excitations [CCSD(T)]. It is shown that the SAPT results reproduce the converged CCSD(T) results within 3% at worst. The SAPT method has been used to analyze the three-body interactions for various geometries of the (H2O)2HCl cluster. It is shown that the induction nonadditivity is dominant, but it is partly quenched by the first-order Heitler–London-type exchange and higher-order exchange–induction/deformation terms. This implies that the classical induction term alone is not a reliable approximation to the nonadditive energy and that it will be difficult to approximate the three-body potential for (H2O)2HCl by a simple analytical expression. The three-body energy represents as much as 21–27% of the pair CCSD(T) intermolecular energy.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-7217
    Keywords: aromatase inhibitor ; hormone independent ; liarozole ; metastatic breast cancer ; RAMBA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Three phase II studies were conducted to determine the efficacy and tolerability of liarozole fumarate (R85246; liarozole), a retinoic acid metabolism blocking agent (RAMBA) and aromatase inhibitor. Additionally, animal experiments in the MNU-induced rat mammary tumor model and in immature ovariectomized rats were conducted to further elucidate liarozole's mechanisms of action. Patients were postmenopausal with either: ER negative disease in first relapse (Group 1; n = 16); ER positive or unknown disease refractory to tamoxifen (Group 2; n = 16); ER positive, negative or unknown disease resistant or refractory to chemotherapy (Group 3; n = 27). Treatment was liarozole (150–300 mg) twice daily orally until disease progression. Response rates were: 25% in group 1 (95% CI 11.0–52.3%; median duration (MD) 20 months; range 2–36.5); 25% in group 2 (95% CI 11.0–52.3%; MD 6.5 months; range 3.5–38); 11% in group 3 (95% CI 4.2–29.2%; MD 7 months; range 3–8.5). No significant improvement in quality of life scores (FLI-C) was noted. Toxicities observed were predominantly dermatological (skin disorders: 88%; dry mouth/eyes/lips: 69%). Plasma estradiol decreased from mean pre-treatment levels of 72.7 pM (9.1–1839 pM) to below detection (9.2 pM) after 1 month. Liarozole, but not vorozole, partially inhibited estradiol induced uterine hypertrophy and demonstrated dose-dependent anti-tumor effects in the rats, only partially overcome by coadministration of estradiol. The clinical responses observed, together with our preclinical results, confirm liarozole's dual mechanism of action and provide a rationale for further evaluation of RAMBAs in the treatment of breast cancer.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-7217
    Keywords: liarozole ; metastatic breast cancer ; postmenopausal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This phase II study of liarozole fumarate (R85246, liarozole), a novel imidazole with retinomimetic and aromatase inhibitory effects, was designed to determine the efficacy and tolerability in postmenopausal women with advanced breast cancer in progression, to correlate these effects with hormonal levels, and to evaluate quality of life. Twenty-nine women with ER-positive or unknown metastatic disease who received ≥ 2 prior hormonal therapies were treated with 150–300 mg liarozole twice daily until disease progression. All patients were evaluable for toxicity and 25 for response. Four patients (16.0%, 95% CI 5.3–37.4%) had partial remission (PR) of their disease for a median of 7.4 months (range 1.2–12.9) and 7 (28%) had disease stabilization for a median of 4.8 months (1.6–16.0). Estradiol decreased from pre-treatment levels of 9.2–52 pM (mean 17.1) to below detection (9.2 pM, p=0.0005) after 1 month. Similarly estrone levels fell from 14–307 pM (mean 92.7) to below detection (9.2 pM, p=0.0001). The most common toxicity was dermatological (96.6%) with features compatible with hypervitaminosis A syndrome such as rash, pruritus, dry skin, and brittle nails. The majority of these were mild to moderate in severity. No significant improvement in quality of life scores (FLI-C) were noted. Liarozole is an active new treatment for breast cancer in patients heavily pre-treated with hormone therapies. Further studies are needed to confirm its relative efficacy in both receptor positive and negative postmenopausal breast cancer.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    International journal of stress management 7 (2000), S. 121-138 
    ISSN: 1573-3424
    Keywords: faculty stressors ; psychological distress ; locus of control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Abstract The study aimed at identifying the sources of stress, and investigating their effects on job satisfaction and psychological distress among 106 university teachers (86 males, 20 females) from four tertiary institutes in Hong Kong. Another purpose of the study was to examine the moderating effect of locus of control on stressor-strain relationships. A factor analysis of the faculty stressors revealed six factors: recognition, perceived organizational practices, factors intrinsic to teaching, financial inadequacy, home/work interface, and new challenge. A series of stepwise multiple regressions demonstrated that recognition, perceived organizational practices, and financial inadequacy were best predictors of job satisfaction, whereas perceived organizational practices and home/work interface were the best predictors of psychological distress. Further, external locus of control was associated with low job satisfaction and psychological distress. A series of hierarchical moderated regressions demonstrated a moderating effect of locus of control on some of the stressor-strain relationships.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    International journal of stress management 7 (2000), S. 209-226 
    ISSN: 1573-3424
    Keywords: managerial stress ; cross-cultural comparisons ; locus of control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Abstract This study investigated managerial stress in Taiwan and UK using the Occupational Stress Indicator-2 (OSI-2) and the Work Locus of Control (WLCS) scale. Results showed that the reliability and validity of the measures used were acceptable and comparable in the two samples. There were similarities as well as differences in managerial stress in the two countries. “Recognition” and “Managerial role” were important predictors of strain for the Chinese managers, whereas “Relationships,” “Organizational climate,” and “Personal responsibility” were important predictors of strain for UK managers. There were consistent moderating (vulnerability) effects of internal control for the Taiwanese managers. Results corroborated some previous studies conducted in the West. However, caution was also suggested for generalizing Western-originated concepts and theories across cultural boundaries.
    Type of Medium: Electronic Resource
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