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Selected Abstracts


Migraine Treatment With Rizatriptan and Non-Triptan Usual Care Medications: A Pharmacy-Based Study

HEADACHE, Issue 9 2004
Roger Cady MD
Objective.,To compare the effectiveness of rizatriptan to other non-triptan medications in the relief of migraine headache in usual care settings. Background.,Although rizatriptan has been shown to provide effective relief of migraine symptoms in clinical trials, limited data exist directly comparing its effectiveness with non-triptan medications. Methods.,Migraineurs aged 18 to 55 who had been prescribed a new antimigraine drug (rizatriptan 10 mg or a selected class of non-triptan oral medications) were recruited to participate in the study through a national retail pharmacy chain. Participants completed a baseline questionnaire at the enrollment and reported their treatment experiences by filling out the treatment diary after using the newly prescribed medication. The treatment outcomes of patients receiving rizatriptan were compared with those receiving non-triptan medications. Logistic regression analysis was applied to test statistical significance with adjustment for potential confounding factors. Results.,Of the 728 patients who entered the study, 693 (95.2%) completed the treatment diary. Patients treated with rizatriptan (192) and non-triptans (501) reported the following outcomes, respectively,onset of headache relief within 30 minutes post-dose: 25% versus 18%; self-defined significant headache relief within 2 hours post-dose: 71% versus 54%; pain free or mild pain at 2 hours post-dose: 58% versus 47%; completely symptom-free within 2 hours of post-dose: 32% versus 20%; return to usual activities within 2 hours post-dose: 39% versus 35%; and satisfied with treatment: 67% versus 55% (P < .05 in all comparisons with exception of returning to usual activities). Conclusion.,Rizatriptan was significantly more effective than non-triptans in the relief of migraine headaches for patients obtaining prescribed migraine medications from a retail pharmacy. Additional studies at other usual care settings may be needed to confirm the findings. [source]


Polarized basis sets for accurate calculations of static and dynamic electric properties of molecules

JOURNAL OF COMPUTATIONAL CHEMISTRY, Issue 3 2010
Angelika Baranowska
Abstract We report on the development and testing of large polarized basis sets (LPolX, where X is the element symbol) for accurate calculations of linear and nonlinear electric properties of molecules. The method used to generate LPolX sets is based on our studies of the analytic dependence of Gaussian functions on external time-independent and time-dependent electric fields. At variance with the earlier investigations of small, highly compact (ZPolX) basis sets for moderately accurate calculations of electric properties of large molecules, the present goal is to obtain basis sets that are nearly saturated with respect to the selected class of electric properties and can be used for accurate studies of interaction-induced properties. This saturation makes the LPolX sets also useful in calculations of optical properties for chiral molecules. In this article, the LPolX sets are generated for X = H, C, N, O, and F, and examined in calculations of linear and nonlinear electric properties of four standard test systems: HF, N2, CO, and HCN. The study of the performance of LPolX basis sets has been carried out at different levels of approximation ranging from the SCF HF method to highly correlated CCSD(T) approach. The results obtained in this study compare favorably with accurate reference data and show a high level of saturation of LPolX basis sets with respect to the polarization effect due to external electric fields. © 2009 Wiley Periodicals, Inc. J Comput Chem, 2010 [source]


"New" branched structures of mechanical systems as result of synthesis of selected class of dynamical characteristics

PROCEEDINGS IN APPLIED MATHEMATICS & MECHANICS, Issue 1 2006
Andrzej Buchacz
In this paper the problem of synthesis has been formulated and its basics has been formalized, according to the discrete mechanical systems with branched structure represented by graphs. In this case the essential field of basic conceptions according to the concerned class of structures and used graphs has been described. The way of receiving "new" structures as a result of synthesis of characteristics into partial fraction has been presented farther on. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]


Review: Organotin compounds and their therapeutic potential: a report from the Organometallic Chemistry Department of the Free University of Brussels,

APPLIED ORGANOMETALLIC CHEMISTRY, Issue 9 2002
Marcel Gielen
Abstract An overview of the development of antitumour organotin derivatives is presented and discussed for selected classes of compounds, such as tetraorganodicarboxylatodistannoxanes and related diorganotin dicarboxylates, and for triorganotin carboxylates. Among the carboxylate groups used are steroidcarboxylates and other biologically relevant carboxylates. High to very high in vitro activities have been found, sometimes equalling that of doxorubicin. Solubility in water is an important issue, dominating the in vivo testing of compounds. Polar substituents, like fluorine or polyoxaalkyl moieties, improve the water solubility. Although organotin derivatives constitute a separate class of compounds, the comparison with cisplatin is inevitable. Among the observed toxicities, neurotoxicity, known from platinum cytostatics, and gastrointestinal toxicity, typical for many oncology drugs, have been detected, but to a lower extent. Further research to develop novel useful organotin antitumour compounds needs to be carried out. Copyright © 2002 John Wiley & Sons, Ltd. [source]