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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    European journal of clinical pharmacology 38 (1990), S. S167 
    ISSN: 1432-1041
    Schlagwort(e): carvedilol ; nitrendipine ; antihypertensive treatment ; elderly patients ; essential hypertension
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary Carvedilol and nitrendipine were given for 12 weeks in a double-blind study to 81 elderly patients (≥ 60 years) with essential hypertension. The effects on blood pressure were measured (Riva Rocci) before medication and after 2 h with the patient in a lying and standing position after 4 weeks of placebo therapy as well as after 4, 8 and 12 weeks of treatment. Carvedilol (25 mg/o. d.) reduced blood pressure measured in the supine and erect position very successfully, similar to the reduction achieved with nitrendipine (20 mg/o. d.), without influencing the pulse rate. Both substances were well tolerated. Carvedilol is an alternative substance for lowering high blood pressure in elderly hypertensive patients.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1432-1041
    Schlagwort(e): Dyslipidaemia ; Hypertension ; Captopril ; Carvedilol ; lipids ; diet
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary We have studied 250 patients with mild to moderate essential hypertension (diastolic blood pressure 95 – 114 mmHg) and dyslipidaemia (high-density lipoprotein cholesterol (HDL-C) below 1.03 mmol·l−1, total cholesterol 5.17–9.05 mmol·l−1, and triglycerides 2.26–5.64 mmol·l−1) in a controlled double-blind, multicentre, parallel group trial. The patients took a fat-modified diet. After a 4-week placebo period, patients who continued to fulfil the selection criteria were randomly allocated to treatment with either carvedilol (a vasodilating β-blocker) 25–50 mg o.d. (n=116) or captopril (an ACE inhibitor) 25–50 mg o.d. (n=117) for 6 months. In both groups there were favourable effects on the serum lipids. The relative changes (medians) in the carvedilol and captopril group were respectively: increase in HDL-C by 11% and 8%, decrease in total cholesterol by 11% and 10%, in low-density lipoprotein cholesterol by 16% and 12%, and in triglycerides by 13% and 14%. Equivalence of the two treatments was confirmed for the target variable change in HDL-C at a significance level of 5%. Reductions in supine systolic/diastolic blood pressures were comparable in the two groups (carvedilol: 23/19 mmHg, captopril: 20/18 mmHg). The improvement in lipid metabolism in patients treated with carvedilol is probably due to its α1-blocking properties.
    Materialart: Digitale Medien
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  • 3
    Digitale Medien
    Digitale Medien
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 1096-1099 
    ISSN: 1399-0047
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Notizen: The structure of jack bean chitinase was solved at 1.8 Å resolution by molecular replacement. It is an α-helical protein with three disulfide bridges. The active site is related in structure to animal and viral lysozymes. However, unlike in lysozyme, the architecture of the active site suggests a single-step cleavage. According to this mechanism, Glu68 is the proton donor and Glu90 assists in the reaction by moving towards the substrate and recruiting a water molecule that acts as the nucleophile. In this model, a water molecule was found in contact with Glu90 Oε1 and Thr119 Oγ at a distance of 3.0 and 2.8 Å, respectively. The model is in accordance with the observed inversion mechanism.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 50 (1994), S. 627-631 
    ISSN: 1399-0047
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Notizen: Seeds contain large quantities of proteins and are therefore main food sources. In the last century, protein extracts of legume seeds were dialysed against distilled water and in some cases small crystals of pure protein appeared. However, those crystals were generally of poor quality with respect to X-ray diffraction. Recently, the crystallization of some of them was improved and the structures of two 7S globulins, phaseolin from Phaseolus vulgaris and canavalin from Canavalia ensiformis, have been determined at 3.0 and 2.6 Å resolution, respectively. Efforts to improve the quality of the phaseolin crystals resulted in three new crystal forms which will be discussed in this paper. The only high-resolution X-ray analysis of a seed globulin from legumes is that of narbonin, a 2S protein from Vicia narbonensis. The crystal structure at 1.8 Å shows a very compact packing in layers of molecules. The intermolecular contacts include salt bridges and hydrophobic clusters that might facilitate both the aggregation of the molecules and their crystallization. Because the seed globulins appear in large quantities in the protein bodies of the seeds, efficient packing of the molecules similar to the crystal packing can be assumed.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 51 (1995), S. 177-189 
    ISSN: 1399-0047
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Notizen: The three-dimensional structure of narbonin, a seed protein from Vicia narbonensis L, has been determined at 1.8 Å resolution. Phase information was obtained by multiple isomorphous replacement and optimized anomalous dispersion. The narbonin structure was initially traced with only 17% amino-acid sequence information and preliminarily refined to a crystallographic R-factor of 16.5%. It is now refined to 15.9% using full sequence information derived from cDNA and after the addition of more solvent molecules. The monomeric molecule of narbonin is an eight-stranded parallel β-barrel surrounded by α-helices in a β/α-topology similar to that first observed in triose phosphate isomerase. Differences exist in the N-terminal part of the polypeptide chain, where the first helix is replaced by a loop and the second β-strand is followed by an additional antiparallel α-sheet placed parallel on top of α-helices α3 and α4. Two short additional secondary structures are present. The first, an α-helix, is situated between the seventh β-strand and the following helix, and the second, which is a 310 helix, between the eighth strand and the C-terminal helix. The most striking observation is the lack of a known enzymatic function for narbonin, because all TIM-like structures known so far are enzymes.
    Materialart: Digitale Medien
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  • 6
    ISSN: 0014-5793
    Schlagwort(e): Primary structure ; Seed storage protein ; TIM barrel ; Vicia narbonensis ; X-ray structure
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Amsterdam : Elsevier
    Journal of Molecular Biology 215 (1990), S. 339-340 
    ISSN: 0022-2836
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    ISSN: 0022-2836
    Schlagwort(e): X-ray diffraction ; chlorophyll biosynthesis ; pyridoxal-5'-phosphate ; site-directed mutagenesis
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    Amsterdam : Elsevier
    Journal of Molecular Biology 243 (1994), S. 128-130 
    ISSN: 0022-2836
    Schlagwort(e): X-ray crystallography ; gyrate atrophy ; non-crystallographic symmetry ; ornithine aminotransferase ; vitamin B6
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 10
    Digitale Medien
    Digitale Medien
    Springer
    Naturwissenschaften 42 (1955), S. 604-604 
    ISSN: 1432-1904
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie , Allgemeine Naturwissenschaft
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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