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  • 1
    Publikationsdatum: 2013-08-20
    Beschreibung: Background— Rosiglitazone improves glycemic control for patients with type 2 diabetes mellitus, but there remains controversy regarding an observed association with cardiovascular hazard. The cardiovascular effects of rosiglitazone for patients with coronary artery disease remain unknown. Methods and Results— To examine any association between rosiglitazone use and cardiovascular events among patients with diabetes mellitus and coronary artery disease, we analyzed events among 2368 patients with type 2 diabetes mellitus and coronary artery disease in the Bypass Angioplasty Revascularization Investigation 2 Diabetes (BARI 2D) trial. Total mortality, composite death, myocardial infarction, and stroke, and the individual incidence of death, myocardial infarction, stroke, congestive heart failure, and fractures, were compared during 4.5 years of follow-up among patients treated with rosiglitazone versus patients not receiving a thiazolidinedione by use of Cox proportional hazards and Kaplan–Meier analyses that included propensity matching. After multivariable adjustment, among patients treated with rosiglitazone, mortality was similar (hazard ratio [HR], 0.83; 95% confidence interval [CI], 0.58–1.18), whereas there was a lower incidence of composite death, myocardial infarction, and stroke (HR, 0.72; 95% CI, 0.55–0.93) and stroke (HR, 0.36; 95% CI, 0.16–0.86) and a higher incidence of fractures (HR, 1.62; 95% CI, 1.05–2.51); the incidence of myocardial infarction (HR, 0.77; 95% CI, 0.54–1.10) and congestive heart failure (HR, 1.22; 95% CI, 0.84–1.82) did not differ significantly. Among propensity-matched patients, rates of major ischemic cardiovascular events and congestive heart failure were not significantly different. Conclusions— Among patients with type 2 diabetes mellitus and coronary artery disease in the BARI 2D trial, neither on-treatment nor propensity-matched analysis supported an association of rosiglitazone treatment with an increase in major ischemic cardiovascular events. Clinical Trial Registration— URL: http://www.clinicaltrials.gov . Unique identifier: NCT00006305.
    Schlagwort(e): Other arteriosclerosis, Type 2 diabetes, Other Treatment
    Digitale ISSN: 1524-4539
    Thema: Medizin
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    Publikationsdatum: 2014-04-23
    Schlagwort(e): Type 2 diabetes, Other Treatment, Chronic ischemic heart disease
    Digitale ISSN: 1524-4539
    Thema: Medizin
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 110 (1999), S. 1148-1153 
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We present an extensive integral equation study of a simple point charge model of water for a variety of thermodynamic states ranging from the vapor phase to the undercooled liquid. The calculations are carried out in the molecular reference-hypernetted chain approximation and the results are compared with extensive molecular dynamics simulations. Use of a hard sphere fluid as a reference system to provide the input reference bridge function leads to relatively good thermodynamics. However, at low temperatures the computed microscopic structure shows deficiencies that probably stem from the lack of orientational dependence in this bridge function. This is in marked contrast with results previously obtained for systems that, although similarly composed of angular triatomic molecules, do not tend to the tetrahedral coordinations that are characteristic of water.© 1999 American Institute of Physics.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 105 (1996), S. 4265-4273 
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We have used the reference hypernetted chain theory (RHNC) with a hard-core reference fluid treated in the modified Verlet's approximation (VM) to obtain the gas-liquid coexistence curve of centrosymmetric linear molecular fluids modeled via site-site Lennard-Jones interactions with and without electrostatic forces. Explicit results are presented for the gas-liquid equilibrium of molecular nitrogen and carbon dioxide. Thermodynamic consistency constraints are crucial to define the reference system. Comparison with Gibbs Ensemble Monte Carlo and density functional theory (DFT) calculations evidence the RHNC-VM theory is an excellent tool for predicting coexistence densities and vapor pressures of linear molecular fluids. © 1996 American Institute of Physics.
    Materialart: Digitale Medien
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  • 5
    Digitale Medien
    Digitale Medien
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 103 (1995), S. 481-484 
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We outline a practical algorithm for the solution of liquid-state integral equations for fluids of fully anisotropic rigid molecules requiring three Euler angles for their configurational description and leading to pair functions of five angular variables. The method is suitable for all potentials. We illustrate the technique with sample results for SO2. © 1995 American Institute of Physics.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 102 (1995), S. 2092-2097 
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We present a novel approach for the theoretical determination of atomic structure factors (or site–site distribution functions) based on the calculation of the molecular pair distribution function by integral equations (reference hypernetted chain approximation). The results are compared with experimental structure factors and computer simulation results for homonuclear diatomic fluids (N2, Cl2 and Br2) which are modeled by means of two center Lennard-Jones potentials. The proposed method leads to a surprisingly good agreement with experimental data, within the obvious limitations that stem from intrinsic inadequacies of the model interaction potential. Comparison with RISM integral equation results evidences the superiority of the molecular integral equation approach. © 1995 American Institute of Physics.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 100 (1994), S. 1599-1605 
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: Liquid hydrogen chloride is modeled by a system of heteronuclear two-center Lennard-Jones particles with embedded point dipoles and quadrupoles. The effect of molecular polarizability is incorporated via an effective dipole approximation. The study is performed by Monte Carlo reaction field simulation and by hypernetted chain and reference hypernetted chain integral equations. Our simulation results yield dielectric properties in excellent agreement with experimental data for liquid HCl. As for the integral equation approach, we have experimented with an empirical choice of the reference system in the spirit of a recently proposed treatment which has proved extremely successful for pure and quadrupolar two-center Lennard-Jones fluids. The hypernetted chain equation performs slightly better when accounting for the multipolar contributions to the configurational energy, but as a whole the reference hypernetted chain equation, as introduced, here proves to be a more appropriate choice.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 87 (1987), S. 2249-2256 
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We have extended the optimized reference-hypernetted chain formalism to multicomponent liquids. The reference system is constructed from a mixed hard spheres fluid with additive diameters whose structural and thermodynamic properties have been conveniently parametrized. The theory is applied to binary liquid mixtures interacting through a repulsive Lennard-Jones potential as well as the complete Lennard-Jones potential; calculated results are in excellent agreement with those of numerical simulations.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 2916-2921 
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: The reference-hypernetted chain equation, generalized to molecular fluids, is optimized by choosing the reference system so as to minimize the free energy. This procedure, which assures a significant improvement in the internal thermodynamic consistency of the theory, is here applied to a fluid of dipolar hard spheres, using both the complete dipolar potential and one with a reaction field (RF) truncation. We confirm that a recent reformulation of the relation between the dielectric constant ε and the mean square dipole moment for the RF geometry indeed brings ε for the truncated potential into reasonably good agreement with the infinite-range values, but that the important correlation functions nevertheless differ qualitatively in their long-range behavior. The method of solving the molecular integral equation, developed earlier, can be applied to other multipolar potentials, or alternatively, to molecules with distributed point charges.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 10
    Digitale Medien
    Digitale Medien
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 2445-2452 
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: The extension of the Barker–Henderson (BH) theory to diatomic potentials is examined by comparison of the predicted thermodynamic properties with "exact'' MC results. Two choices of the potential separation have been considered; corresponding to the BH scheme and that of Weeks–Chandler–Andersen (WCA). Attention has been paid to the effect of the usual approximations to the exact properties of the hard reference system (equation of state and pair correlation functions) and to the convergence rate of the expansion. Conclusions can also be drawn for the extension of the WCA-blip function theory to these systems. It is shown that the behavior of the perturbation expansions exhibits the same features observed in atomic fluids. Nevertheless, the presence of the molecular anisotropy leads to a rather different assessment of the relative usefulness of each theory. Incidentally, small inaccuracies of the well-known Boublik and Nezbeda equation for the compressibility factor of dumbbells have been discovered at very high densities (outside the range previously reported).
    Materialart: Digitale Medien
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