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  • 1
    Electronic Resource
    Electronic Resource
    Strukturisomerie von Dimethylantimontrichlorid (1976)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 3034-3038 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structural Isomerism of DimethylantimonytrichlorideThe vibrational spectra (i. r., Raman) of both dissolved and crystalline dimethylantimonytrichloride are recorded and assigned. The compound is monomeric in solution with symmetry C2v, it crystallizes as a dimeric, bridged by chlorine atoms and with methyl groups in trans-positions (symmetry D2h).
    Notes: Die Schwingungsspektren (IR, Raman) von gelöstem und Kristallisiertem Dimethylantimontrichlorid werden mitgeteilt und zugeordnet. Danach bildet die Verbindung in Lösung monomere Moleküle der trigonal-bipyramidalen Symmetrie C2v, während im kristallinen Zustand über Chlorobrücken verknüpfte Dimere mit zueinander trans-ständigen Methylgruppen der Symmetrie D2h vorliegen.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19761090908
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  • 2
    Electronic Resource
    Electronic Resource
    Reversal of ciliary action in paramecium caudatumContribution from the Zoological Laboratory of the Johns Hopkins University and the Marine Biological Laboratory, Woods Hole. (1926)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 43 (1926), S. 105-117 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: 1Monovalent cation salts induce reversal in the direction of the stroke of the cilia; bivalent and trivalent cation salts with a few exceptions do not. Some acids induce reversal, others do not.2The duration of reversed action varies with the kind of salt and with the concentration. As the concentration increases, the duration of reversed action increases to a maximum and then decreases to zero.3Bivalent and trivalent cation salts neutralize the effect of monovalent cation salts. The relative amount required varies with the kind of salt used and with the concentration.4The amount of a given salt required to neutralize another salt is not proportional to the concentration of the salt neutralized. Weber's law does not hold.5The results seem to indicate that ciliary reversal is associated with differential adsorption and consequent changes in electric potential, but that there are also other factors involved.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050430106
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  • 3
    Electronic Resource
    Electronic Resource
    Heat shock protein is a unique marker of growth arrest during macrophage differentiation of HL-60 cells (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 156 (1993), S. 619-625 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Prior to morphologic and functional maturation, terminally differentiating hematopoietic cells first exit the cell cycle and undergo growth arrest. Relatively little is known about which molecules regulate differentiation-induced growth arrest. In the present report, we sought to determine whether the mammalian low molecular weight heat shock protein (hsp28) was a candidate growth-regulatory molecule during human hematopoiesis. To this end, hsp28 protein expression was examined during phorbol ester (PMA)-induced macrophage differentiation of the human HL-60 promyelocytic leukemic cell line. Whereas hsp28 was constitutively expressed at relatively low levels in an unphosphorylated state, hsp28 was rapidly phosphorylated within 4 hr following PMA-induced differentiation, preceding increased hsp28 protein levels at 24-48 h. In contrast to other differentiative agents, hsp28 steady state mRNA and protein were regulated concordantly in response to macrophage differentiation. More importantly, these changes were transient, and occurred concomitant with the down-regulation of cellular proliferation and the onset of G1 phase cell cycle arrest. In total, these observations implicate hsp28 as an intermediary in the myelomonocytic differentiative pathway of promyelocytic leukemic cells, and will shed light on the events regulating this process. © 1993 Wiley-Liss, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1041560322
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  • 4
    Electronic Resource
    Electronic Resource
    Glucose induces lipid peroxidation and inactivation of membrane-associated ion-transport enzymes in human erythrocytes in vivo and in vitro (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 149 (1991), S. 100-109 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Erythrocytes of diabetic subjects (non-insulin dependent) were found to have eight- to ten-fold higher levels of endogenously formed thiobarbituric acid reactive malonyldialdehyde (MDA), thirteen-fold higher levels of phospholipid-MDA adduct, 15-20% reduced Na+-K+-ATPase activity with unchanged Ca+2-ATPase activity, as compared with the erythrocytes from normal healthy individuals. Incubation of normal erythrocytes with elevated concentrations (15-35 mM) of glucose, similar to that present in diabetic plasma, led to the increased lipid peroxidation, phospholipid-MDA adduct formation, reduction of Na+-K+-ATPase (25-50%) and Ca+2-ATPase (50%) activities. 2-deoxy-glucose was 80% as effective as glucose in the lipid peroxidation and lipid adduct formation. However, other sugars, such as fructose, galactose, mannose, fucose, glucosamine and 3-O-methylmannoside, and sucrose, tested at a concentration of 35 mM, resulted in reduced (20-30%) lipid peroxidation as the enzyme inactivation occur within 30 min of incubation of erythrocytes with high concentration (15-35 mM) of glucose, while lipid peroxidation product, MDA appears at 4 hr and lipid-MDA adducts at 8 hr. The lipoxygenase pathway inhibitors, 5, 8, 11-eicosatriynoic acid and Baicalein (5,6,7-trihydroxyflavone), reduced the glucose-induced lipid peroxidation by 30% and MDA-lipid adduct formation by 26%. Indomethacin, a cyclooxygenase pathway inhibitor, had no discernible effect on the lipid peroxidation in erythrocytes. However, the inhibitors of lipid peroxidation, 3-phenylpyrazolidone, metyrapone, and the inhibitors of lipoxygenase pathways did not ablate the glucose-induced reduction of Na+-K+-ATPase and Ca+2-ATPase activities in erythrocytes. Erythrocytes produce 15-HETE (15-hydroxy-eicosatetraenoic acid), which is augmented by glucose. These results suggtest that the formation of lipoxygenase metabolites potentiate the glucose-induced lipid peroxidation and that the inactivation of Na+-K+-ATPase and Ca+2-ATPase occurs as a result of non-covalent interaction of glucose with these enzymes.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1041490113
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  • 5
    Electronic Resource
    Electronic Resource
    Mechanism of cigarette smoke condensate induced adhesion of human monocytes to cultured endothelial cells (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 160 (1994), S. 154-162 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Cigarette smoking is ranked among the leading risk factors in the etiology of atherosclerotic vascular disease. The mechanisms, however, that link cigarette smoking to increased incidence of atherosclerosis are not understood. The adherence of circulating monocytes to the endothelium, migration into the subendothelium, and subsequent formation of foam cells are principal initial events in the development of atherosclerosis. We therefore determined whether cigarette smoke caused increased adherence of monocytes to endothelial cells and the cellular mechanism of this increased adherence. Cigrette smoke condensate (CSC), the particulate fraction of cigarette smoke derived from 2R1 standard research cigarettes, at a concentration of 25-30 μg/ml (average yield of CSC is 26.1 mg/cigarette), augmented (70-90%) basal adherence of human peripheral blood monocytes to a cultured monolayer of endothelial cells derived from bovine aorta (BAEC) and human umbilical vein (HUVEC). There was a concomitant increase in the expression of CD11b ligand on the surface of monocytes as determined by flow cytometry, utilizing FITC conjugated Mab MO-1 (CD11b). However, nicotine (1-15 μg/ml) and cadmium sulfate (10 μg/ml), constituents of CSC, individually or in combination had no effect either on CD11b expression or adherence of monocytes to endothelial cells. Treatment of HUVEC with CSC for 60 min also resulted in an increased expression of ICAM-1 and ELAM-1 as determined by mean fluorescence intensity of ICAM-1 and ELAM-1 labeled cells in flow cytometric analysis. The CSC induced expression of CD11b in monocytes was optimal at 25-30 min and was inhibited by protein kinase C inhibitors, staurosporine and H-7, and also by baicalein, a lipoxygenase inhibitor. Similarly, CSC induced ICAM-1 and ELAM-1 expression in HUVEC was inhibited by protein kinase C inhibitors. CSC stimulated the adherence of human monocytes but not the monocytic cell lines HL-60, U937, and THP-1 to endothelial cells. The CSC stimulated adherence of human monocytes was inhibited (80%) by MAb to CD11b and 50% by Mab to ICAM-1 and ELAM-1. These results suggest that cigarettee smoke particulate constituents activate protein kinase C, leading to increased surface expression of adhesive ligand CD11b on peripheral blood monocytes and counter receptor(s) ICAM-1 and ELAM-1 in endothelial cells. The expression of ligand and counter receptor leads to potentiated adherence of monocytes to endothelial cells, an initial event in the pathogenesis of cigarette smoke induced inflammatory response in the vessel wall. © 1994 Wiley-Liss, Inc.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1041600118
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  • 6
    Electronic Resource
    Electronic Resource
    Platzwechselvorgänge der Liganden in festen Komplexsalzen. Intermolekularer Ligandenaustausch in gemischten Hexahalogenokomplexen von Osmium(IV) (1974)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 410 (1974), S. 59-66 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ligand Exchange in Solid Complex Salts. II. Intermolecular Ligand Exchange in Mixed Hexahalo-complexes of Osmium(IV)On tempering a pure complex of the type K2[OsClnY6-n], Y = Br, I; n = 1-5 to 170-200°C all complexes with n = 0-6 are formed by intermolecular solid-state exchange reactions. At equilibrium the ligands are distributed statistically on all species. The rate of exchange is slow for complexes containing many I ligands. It increases with the number of Cl and has its maximum for complexes with many Br ligands. For the exchange mechanism the octahedral vacancies in the anti fluorite lattice are important.
    Notes: Beim Tempern eines reinen Komplexsalzes vom Typ K2[OsClnY6-n], Y = Br, J; n = 1-5 auf 170-200°C bilden sich durch intermolekulare Festkörperaustauschreaktionen alle Komplexe von n = 0-6. Im Gleichgewichtszustand verteilen sich die Liganden statistisch über alle Spezies des Systems. Die Austauschgeschwindigkeit ist bei den jodreichen Komplexen am kleinsten, sie steigt mit wachsender Anzahl der Cl-Liganden an und ist in den Br-reichen Komplexen am größten. Für den Austauschmechanismus sind die nicht besetzten Oktaederlücken des Antifluoritgitters wichtig.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19744100108
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  • 7
    Electronic Resource
    Electronic Resource
    Linear verbrückte Komplexe des Dimethyl-AntimontrichloridsProfessor Carl Mahr zum 75. Geburtstage am 22. Dezember 1975 gewidmet. (1975)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 418 (1975), S. 229-234 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Linear Bridged Complexes of Dimethyl AntimontrichlorideTetramethylammonium cyanide and fluoride react with (CH3)2SbCl3 yielding the complexes NMe4[(CH3)2Cl3Sb—X—SbCl3(CH3)2] with linear Sb—X—Sb bridges (X = CN, F). The vibrational spectra (IR, Raman) were recorded and assigned.
    Notes: Tetramethylammonium-Cyanid und -Fluorid bilden mit (CH3)2SbCl3 die gestreckte CN- bzw. F-Brücken enthaltenden Komplexe NMe4[(CH3)2Cl3Sb—X—SbCl3(CH3)2] mit X = CN, F. Die Schwingungsspektren (IR, Raman) werden mitgeteilt und zugeordnet.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19754180305
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  • 8
    Electronic Resource
    Electronic Resource
    Darstellung und Schwingungsspektren der Komplexionen [(Cl5Sb)2F]⊖, [(Cl5Sb)2CN]⊖ und [CH3SbCl4N3]⊖ (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 426 (1976), S. 253-259 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Vibrational Spectra of the Complex Ions [(Cl5Sb)2F]⊖, [(Cl5Sb)2CN]⊖, and [CH3SbCl4N3]⊖Antimony pentachloride reacts with Tetramethylammonium fluoride and cyanide, respectively, in the absence of solvents yielding complexes with molar ratio 2:1. The complex anions [Cl5Sb—X—SbCl5]⊖ (X = F, CN) exhibit nearly linear Sb—X—Sb bridges (D4h, D4h′), as follows by the vibrational spectra (i.r., Raman). CH3SbCl4 can be stabilized by the reaction with N(CH3)4N3, yielding [N(CH3)4][CH3SbCl4N3].
    Notes: Antimonpentachlorid reagiert mit Tetramethylammoniumfluorid bzw.-cyanid ohne Lösungsmittel unter Bildung von Komplexen im Molverhältnis 2:1. Die komplexen Anionen [Cl5Sb—X—SbCl5]⊖ (X = F, CN) enthalten nach den Schwingungsspektren (IR, Raman) zumindest weitgehend gestreckte Sb—X—Sb-Brücken (D4h bzw. D4h′). Bei CH3SbCl4 führt die Adduktbildung mit N3⊖ zu einer Stabilisierung des sehr unbeständigen Methylantimontetrachlorids.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764260304
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  • 9
    Electronic Resource
    Electronic Resource
    Piatzwechselvorgänge der Liganden in festen Komplexsalzen. I. Intramolekulare Isomerisierung an Gemischten Hexahalogenokomplexen von Osmium(IV) (1974)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 410 (1974), S. 48-58 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ligand Exchange in Solid Complex Salts. I. Intramolecular Isomerization of Mixed Hexahalo-complexes of Osmium(IV)The isomerization of pure solid complex salts of the type cis- or trans-K2[OsClnY6-n], Y = Br, I; n = 2, 3, 4, is measured spectrophotometrically at 115, 125 and 135°C. By intramolecular rearrangement of the ligands statistical relations of the isomers are adjusted. For the solid-state exchange reactions a dissociative bond-breaking-and a twist-mechanism are discussed.
    Notes: Die Isomerisierung reiner fester Komplexe des Type cis- bzw. trans-K2[OsClnY6-n], Y = Br, J; n = 2, 3, 4, wird bei 115, 125 und 135°C mit Hilfe spektrophotometrischer Messungen verfolgt. Durch intramolekulare Umlagerungen der Liganden stellen sich statistische Isomerenverhältnisse ein. Für den Festkörperaustausch werden ein Bindungsbruch- und ein Twistmechanismus diskutiert.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19744100107
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  • 10
    Electronic Resource
    Electronic Resource
    MÖSSBAUER- und Infrarotspektren von Addukten des K4[Fe(CN)6] mit Antimontrihalogeniden (1974)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 404 (1974), S. 230-238 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Mössbauer- and IR Spectra from the Addition Compounds of K4[Fe(CN)6] with Antimony TrihalidesBy the reaction of K4[Fe(CN)6] with SbX3 in the melt (X = Cl, Br) or in SO2 solution (X = F) the addition compounds K4[Fe(CNSbX3)6] (X = F, Cl) and K4[Fe(CNSbX3)4(CN)2] (X = Cl, Br) are formed. The IR spectra of these compounds have been interpreted. The MÖSSBAUER spectra are single lines which exhibit a slight broadening compared with K4[Fe(CN)6] · 3 H2O. The values of the isomer shifts following the order of the LEWIS acid strengths of the SbX3 molecules correspond to a small but significant increase of the s-electron density, which is explained by the increasing influence of the π-acceptor function of the ligands.
    Notes: Durch Umsetzung von K4[Fe(CN)6] mit SbX3 in der Schmelze (X = Cl, Br) bzw. in flüssigen SO2 (X = F) entstehen die Addukte K4[Fe(CNSbX3)6] (X = F, Cl), bzw. K4[Fe(CNSbX3)4(CN)2] (X = Cl, Br), deren IR-Spektren zugeordnet werden. Die MÖSSBAUER-Spektren zeigen gegenüber K4[Fe(CN)6] · 3 H2O leicht verbreiterte Einliniensignale. Den Meßwerten für die Isomerieverschiebung ist in der Reihenfolge der LEWIS-Säurestärke der SbX3-Liganden eine geringe, jedoch signifikante Zunahme der effektiven s-Elektronendichte am Fe-Kernort zu entnehmen, die mit dem zunehmenden Einfluß der π-Akzeptorwirkung der Liganden erklärt wird.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19744040303
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