ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

1

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Glycerol-3-phosphate dehydrogenase is induced by glucocorticoids in hepatocytes and hepatoma cells in vitro (1983)

Meyer, Robert D. ; Preston, Sheryl L. ; McMorris, F. Arthur

New York, NY [u.a.] : Wiley-Blackwell

Journal of Cellular Physiology 114 (1983), S. 203-208

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ISSN: 0021-9541

Keywords: Life and Medical Sciences ; Cell & Developmental Biology

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Biology , Medicine

Notes: Previous studies have shown that cytosolic glycerol-3-phosphate dehydrogenase (GPDH; EC 1.1.1.8) can be induced by glucocorticoids in mammalian brain, mammary gland, and thymus, but it was thought that no induction occurred in liver. We report here that GPDH is induced by glucocorticoids in several lines of hepatoma cells and in rat hepatocytes cultured in vitro. When rat hepatoma cells of clone FU5AH were exposed to 3 μM hydrocortisone (HC) for 3 days, GPDH specific activity increased greater than sixfold over control. The rate and extent of induction were similar in exponentially growing and stationary-phase cultures of cells. Four other hepatoma cell lines were inducible to a lesser extent, and three lines were not inducible. GPDH was also induced by glucocorticoids in cultures of hepatocytes isolated from livers of 6-day-old rats. The enzyme was induced threeto fourfold by the synthetic glucocorticoid, dexamethasone, in the presence of 1 nM insulin, but the induction was not observed in the absence of insulin.

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jcp.1041140209

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Biologen in unserer Zeit 4/93 (1993)

Schaefer, G. ; Vizepräsident, Uwe Faust, ; Lengeler, Josef W. ; [et al.]

Weinheim : Wiley-Blackwell

Biologie in unserer Zeit 23 (1993), S. 49-63

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ISSN: 0045-205X

Keywords: Life and Medical Sciences

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Biology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/biuz.19930230420

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3

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Geowissenschaften (1993)

Koch, J. ; Meyer, D. E. ; Ludescher, S. ; [et al.]

Weinheim : Wiley-Blackwell

Biologie in unserer Zeit 23 (1993), S. XII

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ISSN: 0045-205X

Keywords: Life and Medical Sciences

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Biology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/biuz.19930230615

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Immortal phenotype of the HeLa variant D98 is recessive in hybrids formed with normal human fibroblasts (1990)

Pereira-Smith, Olivia M. ; Stein, Gretchen H. ; Robetorye, Susan ; [et al.]

New York, NY [u.a.] : Wiley-Blackwell

Journal of Cellular Physiology 143 (1990), S. 222-225

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ISSN: 0021-9541

Keywords: Life and Medical Sciences ; Cell & Developmental Biology

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Biology , Medicine

Notes: Normal human cells such as human diploid fibroblasts (HDF) have a finite pro-liferative lifespan in culture. Previous studies have shown that the limited lifespan phenotype is dominant in cell hybrids formed by fusion of HDF to at least 23 different kinds of immortal human cells. However, two independent studies reported that hybrid clones formed by the fusion of HDF to the HeLa variant D98 had unlimited division potential. Those results were potentially very important because they implied that a) there is a dominant mechanism for immortalization of human cells in addition to the well-documented recessive mechanism, and b) a dominant mechanism would lend itself to identification of the immortalizing gene. Consequently, we carried out more detailed studies of the behavior of D98 cells in hybrids. Our results indicate that the majority of D98 x HDF hybrid clones exhibit a clear-cut finite proliferative lifespan phenotype. In addition, these hybrid cell populations often give rise to an immortal focus of cells that can be seen to take over the population of mortal cells at the end of their lifespan. This phenomenon reconciles our data with the previous reports of immortal D98 x HDF hybrid clones and leads us to conclude that D98 cells do not express a dominant immortalizing gene.

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jcp.1041430204

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GM-CSF triggers a rapid, glucose dependent extracellular acidification by TF-1 cells: Evidence for sodium/proton antiporter and PKC mediated activation of acid production (1993)

Wada, H. Garrett ; Indelicato, Stephen R. ; Meyer, Lorraine ; [et al.]

New York, NY [u.a.] : Wiley-Blackwell

Journal of Cellular Physiology 154 (1993), S. 129-138

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ISSN: 0021-9541

Keywords: Life and Medical Sciences ; Cell & Developmental Biology

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Biology , Medicine

Notes: The extracellular acidification rate of the human bone marrow cell line, TF-1, increases rapidly in response to a bolus of recombinant granulocyte-macrophage colony stimulating factor (GM-CSF). Extracellular acidification rates were measured using a silicon microphysiometer. This instrument contains micro-flow chambers equipped with potentiometric sensors to monitor pH. The cells are immobilized in a fibrin clot sandwiched between two porous polycarbonate membranes. The membranes are part of a disposable plastic “cell capsule” that fits into the microphysiometer flow chamber. The GM-CSF activated acidification burst is dose dependent and can be neutralized by pretreating the cytokine with anti-GM-CSF antibody. The acidification burst can be resolved kinetically into at least two components. A rapid component of the burst is due to activation of the sodium/proton antiporter as evidenced by its elimination in sodium-free medium and in the presence of amiloride. A slower component of the GM-CSF response is a consequence of increased glycolytic metabolism as demonstrated by its dependence on D-glucose as a medium nutrient. Okadaic acid (a phospho-serine/threonine phosphatase inhibitor), phorbol 12-myristate 13-acetate (PMA, a protein kinase C (PKC) activator), and ionmycin (a calcium ionophore) all produce metabolic bursts in TF-1 cells similar to the GM-CSF response. Pretreatment of TF-1 cells with PMA for 18 h resulted in loss of the GM-CSF acidification response. Although this treatment is reported to destroy protein kinase activity, we demonstrate here that it also down-regulates expression of high-affinity GM-CSF receptors on the surface of TF-1 cells. In addition, GM-CSF driven TF-1 cell proliferation was decreased after the 18 h PMA treatment. Short-term treatment with PMA (1-2h) again resulted in loss of the GM-CSF acidification response, but without a decrease in expression of high-affinity GM-CSF receptors. Evidence for involvement of PKC in GM-CSF signal transduction was obtained using calphostin C, a specific inhibitor of PKC, which inhibited the GM-CSF metabolic burst at a subtoxic concentration. Genistein and herbimycin A, tyrosine kinase inhibitors, both inhibited the GM-CSF response of TF-1 cells, but only at levels high enough to also inhibit stimulation by PMA. These results indicate that GM-CSF activated extracellular acidification of TF-1 cells is caused by increases in sodium/proton antiporter activity and glycolysis, through protein kinase signalling pathways which can be both activated and down-regulated by PMA. © 1993 Wiley-Liss, Inc.

Additional Material: 8 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jcp.1041540116

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Synthese und Struktur der ersten Wasserfreien ternären Lithiumnitrate der Lanthanide, Li2[M(NO3)5] (M = La, Pr—Eu) (1993)

Manek, Elke ; Meyer, Gerd

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 619 (1993), S. 513-516

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ISSN: 0044-2313

Keywords: Synthesis ; Crystal Structure ; Lanthanides ; Ternary Lithium Nitrates ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: Synthesis and Structure of the First Anhydrous Ternary Lithium Nitrates of the Lanthanides, Li2[M(NO3)5] (M = La, Pr—Eu).Single crystals of the ternary lithium nitrates of the lanthanides, Li2[M(NO3)5] (M = La, Pr—Eu), are obtained by dissolving the respective anhydrous nitrate, previously obtained by dehydration of M(NO3)3 · 6 H2O at 180°C under vacuum, in a melt of LiNO3. In the crystal structure of Li2[Pr(NO3)5] (orthorhombic, Pnnm, Z = 4, a = 899.6(2), b = 1 052.7(2), c = 1 178.6(2)pm; R = 0.072, Rw = 0.034) there are two crystallographically different Pr3+ ions, each surrounded by six bidentate nitrate ligands. One nitrate group is bridging between Pr1 and Pr2 resulting in a winded chain, ∞1[(O2/2NO2/1)Pr1(NO3)4(O2/2NO2/1)Pr2(O2/2NO2/1)(NO3)4]5-, running along [010]. The chains are packed hexagonally and held together by lithium ions. The coordination polyhydron of Li+ may be described as a bicapped trigonal prism.

Notes: Einkristalle der ternären Nitrate der Lanthanide vom Typ Li2[M(NO3)5] (M = La, Pr—Eu) erhält man durch Auflösen der zuvor bei 180°C unter Vakuum entwässerten Hydrate M(NO3)3 · 6 H2O in einer Lithiumnitrat-Schmelze. Die Röntgenstrukturanalyse am Beispiel von Li2[Pr(NO3)5] (orthorhombisch, Pnnm, Z = 4; a = 899,6(2); b = 1 052,7(2); c = 1 178,6(2)pm; R = 0,072; Rw = 0,034) zeigt, daß zwei kristallographisch verschiedene Pr3+ vorliegen, die von jeweils sechs zweizähnigen Nitratliganden umgeben sind. Eine Nitratgruppe verbrückt zwischen Pr1 und Pr2, so daß sich eine gewundene Kette gemäß ∞1[(O2/2NO2/1)Pr1(NO3)4(O2/2NO2/1)Pr2(O2/2NO2/1)(NO3)4]5- ergibt, die längs [010] verläuft. Die Kettenstränge sind gemäß einer hexagonalen Stabpackung angeordnet und werden durch Li+-Ionen zusammengehalten. Die Koordination um Li+ kann als zweifach bekapptes trigonales Prisma beschrieben werden.

Additional Material: 4 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/zaac.19936190313

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Kristallstruktur von Caesiumacetat, Cs(CH3COO) (1993)

Lossin, Adalbert ; Meyer, Gerd

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 619 (1993), S. 1462-1464

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ISSN: 0044-2313

Keywords: Cesium Acetate ; Synthesis ; Crystal Structure ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: Crystal Structure of Cesium Acetate, Cs(CH3COO).The crystal structure of cesium acetate, Cs(CH3COO), was determined from single crystal fourcirclediffractometer data: hexagonal crystal system, P6/m (No. 175), Z = 6, a = 1 488.0(2), c = 397.65(5) pm, Vm = 76.54(2) cm3/mol, R = 0.045, Rw = 0.030. The structure consists of flat layers of acetate anions parallel (001) that are separated by layers of cesium cations. There is a close relationship with the CaF2 type according to CsO2(CCH3): each cesium cation has eight oxygen atoms as nearest neighbours. They form a heavily distorted cube with trapezoidal basal faces. In contrast to CaF2, these polyhedra are linked via three faces and two edges to a three-dimensional network.

Notes: Die Kristallstruktur von wasserfreiem Caesiumacetat, Cs(CH3COO), wurde anhand von Vierkreisdiffraktometerdaten bestimmt: hexagonales Kristallsystem, P6/m (Nr. 175), Z = 6, a = 1 488,0(2), c = 397,65(5) pm, Vm = 76,54(2) cm3/mol, R = 0,045, Rw = 0,030. Die Struktur besteht aus ebenen Schichten von Acetationen parallel (001), die durch Caesium-Schichten separiert sind. Es besteht eine enge Verwandtschaft zum CaF2-Typ gemäß CsO2(CCH3): die Cs+-Ionen sind von 8 Sauerstoffatomen in Form eines stark verzerrten Würfels mit trapezoiden Grundflächen umgeben. Im Unterschied zu CaF2 sind die Würfel jedoch nur über drei gemeinsame Flächen und zwei Kanten zu einem dreidimensionalen Netzwerk verknüpft.

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/zaac.19936190823

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Cs2(H3O)Pr(CH3COO)6 und Cs2Pr(CH3COO)5: Synthese, Kristallstrukturen und Thermolyse. Über die analogen Acetate mit Lanthan bis Terbium (1993)

Lossin, Adalbert ; Meyer, Gerd

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 619 (1993), S. 2021-2030

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ISSN: 0044-2313

Keywords: Cesium Praseodymium(III) Acetate ; Synthesis ; Crystal Structure ; Thermolysis ; Evolved gas analysis (EGA) ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: Cs2(H3O)Pr(CH3COO)6 and Cs2Pr(CH3COO)5: Synthesis, Crystal Structures and Thermolysis. Analogous Acetates with Lanthanum through TerbiumSingle crystals of Cs2(H3O)Pr(CH3COO)6 are obtained as green plates from an acetic acid solution (≈50%) of Cs2CO3 and Pr(CH3COO)3 · 1,5 H2O. The crystal structure monoclinic, Cm, Z = 2, a = 1 540.4(4), b = 691.3(2), c = 1 221.5(4) pm, β = 104.60(5)°, Vm = 379.1(2) cm3/mol, R = 0.040, Rw = 0.035 was determined from four-circle-diffractometer data. The structure consists of monomeric Pr(CH3COO)3 units, in which Pr3+ is surrounded by nine oxygen atoms. These monomers are linked together to infinite layers parallel (001) by common acetate oxygen atoms with two „molecules“ of Cs(CH3COO). Together with an additional acetate ion coordinated to one of the Cs+ ions the composition of the layers is [Cs2Pr(CH3COO)6]-. Between these layers H3O+ is located for electroneutrality. Thermal decomposition of Cs2(H3O)Pr(CH3COO)6 was examined with thermoanalytical methods (TG/DTA with coupled gas analysis), Guinier-Simon technique and IR spectroscopy: beginning at 70°C the compound looses water and acetic acid. It decomposes topotactically to Cs2Pr(CH3COO)5. At 270°C this acetate decomposes to Cs2CO3 and Pr2O2CO3 which emits CO2 at 600°C form ing Pr2O3or PrO2-x Single crystals of Cs2Pr(CH3COO)5 were obtained from Pr(CH3COO)3, in molten Cs(CH3COO) at about 200°C. The crystal structure tetragonal, P43, Z = 4, a = 1 174,5(2), c = 1 480,5(3) pm, Vm = pin,307,5(1) cm3/mol, R = 0,061, Rw= 0,031 again consists of Pr(CH3COO)3, monomers where Pr3+ has 9 oxygen ligands in its first coordination sphere. They are linked together by two ”molecules“ of cesium acetate to infinite chains along [00l] around the 4, screw axis. There are also acetate bridges between these chains. Isotypic compounds Cs2(H3O)M(CH3COO)6 and Cs2M(CH3COO)5, and Cs2M(CH3COO)5with M = La—Tb, were obtained from acetic acid solutions or thermal decomposition and were characterized by X-ray Guinier techniques.

Notes: Einkristalle von Cs2(H3O)Pr(CH3COO)6 wurden in Form grüner Plättchen aus stark essigsaurer Lösung (≈50%ig) von Cs2CO3 und Pr(CH3COO)3 · 1,5 H2O gezüchtet. Die Kristallstruktur monoklin, Cm, Z = 2, a = 1 540,4(4), b = 691,3(2), c = 1 221,5(4) pm, β = 104,60(5)°, Vm = 379,1(2) cm3/mol, R = 0,040, Rw = 0,035 wurde anhand von Vierkreisdiffraktometerdaten bestimmt. In der Kristallstruktur liegen monomere Pr(CH3COO)3-Einheiten vor, in denen Pr3+ neunfach von Sauerstoff umgeben ist. Zwei „Moleküle“ Cs(CH3COO) verknüpfen diese Monomeren über Sauerstoffatome zu Schichten parallel (001). Dabei wird ein Cs+-Ion von einem weiteren Acetation koordiniert, so daß sich die Schichtzusammensetzung zu [Cs2Pr(CH3COO)6]- ergibt. Zwischen den Schichten befinden sich H3O+-Ionen zum Ladungsausgleich. Das thermische Verhalten von Cs2(H3O)Pr(CH3COO)6 wurde mittels TG/DTA mit simultaner Zersetzungsgasanalyse, Guinier-Simon-Technik und IR-Spektroskopie an den festen Thermolyseprodukten untersucht: Schon ab 70°C verliert Cs2(H3O)Pr(CH3COO)6 Wasser und Essigsäure und wird in topotaktischer Reaktion zu Cs2Pr(CH3COO)5 abgebaut. Die weitere Zersetzung beginnt bei ungefähr 270°C, wobei Cs2CO3 und wohl Pr2O2CO3 gebildet werden, das unter Abgabe von CO2 bei 600°C in Pr2O3 bzw. PrO2-x (je nach Reaktionsführung) übergeht. Einkristalle von Cs2Pr(CH3COO)5 wurden durch die Reaktion von Pr(CH3COO)3 mit geschmolzenem Cs(CH3COO) bei 200°C erhalten. Die Kristallstruktur tetragonal, Raumgruppe P43, Z = 4, a = 1 174,5(2), c = 1 480,5(3) pm, Vm = 307,5(1) cm3/mol, R = 0,061, Rw = 0,031 enthält ähnliche Monomere Pr(CH3COO)3 wie Cs2(H3O)Pr(CH3COO)6. Sie werden durch zwei „Moleküle“ Cs(CH3COO) verbunden, so daß unendliche Ketten in Form von Wendeln um die Schraubenachsen 43 entstehen, die aber auch in Richtung [100] und [010] über Acetationen verknüpft sind. Die jeweils isotypen Verbindungen Cs2(H3O)M(CH3COO)6 und Cs2M(CH3COO)5, M = La—Tb, wurden aus Lösung bzw. durch thermischen Abbau hergestellt und mittels Pulver-Röntgenmethoden charakterisiert.

Additional Material: 4 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/zaac.19936191210

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(NH4)2[Pr(NO3)5(H2O)2] · 2 H2O Kristallstruktur und thermisches VerhaltenProfessor H. R. Oswald zum 60. Geburtstage am 30. November 1990 gewidmet (1990)

Meyer, Gerd ; Manek, Elke ; Reller, Armin

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 591 (1990), S. 77-86

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ISSN: 0044-2313

Keywords: Diammonium Diaquapentanitrato Praseodymate(III) Dihydrate ; Crystal Structure ; TG/DTA-MS ; HRTEM ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: (NH4)2[Pr(NO3)5(H2O)2] · 2 H2O, Crystal Structure and Thermal BehaviorIn the crystal structure of (NH4)2[Pr(NO3)5(H2O)2] · 2 H2O (monoclinic, C2/c, Z = 4; a = 1104.7(5); b = 892.8(3); c = 1787.5(8) pm; β = 101.78(7)°) Pr3+ exhibits a coordination number of twelve (five bidentate nitrate and two water molecules as ligands). The structure may be viewed at as a layer structure: Slabs of the composition [Pr(NO3)5]2- and [(NH4)2(H2O)2(H2O)2]2+ are stacked in the [100] direction. The thermal decomposition consists of six steps where (NH4)2(Pr(NO3)5(H2O)2, (NH4)2[Pr(NO3)5], (NH4)[Pr(NO3)4], Pr(NO3)3, and PrONO3 are formed as intermediates judging from simultaneous TG/DTA-MS investigations. The final product is PrO2-x (CaF2-type). High Resolution Transmission Electron Microscopy shows that it is produced as highly ordered agglomerates of crystallites of the size 10-50 nm.

Notes: In der Kristallstruktur von (NH4)2[Pr(NO3)5(H2O)2] · 2 H2O (monoklin), C2/c, Z = 4; a = 1104,7(5), b = 892,8(3); c = 1787,5(8) pm; β = 101,78(7)(°) hat Pr3+ die Koordinationszahl zwölf (fünf zweizähnige NO3-, zwei H2O als Liganden). Sie kann als Schichtstruktur aufgefaßt werden: Schichtpakete der Zusammensetzung [Pr(NO3)5]2- bzw. [(NH4)2(H2O)2(H2O)2]2+ sind längs [100] gestapelt. Der thermische Abbau verläuft in sechs Stufen, wobei simultane TG/DTA-MS-Untersuchungen als Zwischenstufen (NH4)2[Pr(NO3)5(H2O)2], [NH4] Pr[NO3)4], Pr(NO3)3 sowie PrONO3 nahelegen. Das Endprodukt ist PrO2-x (CaF2-Typ), das nach Ausweis von HRTEM-Aufnahmen in Form hochgeordneter, miteinander verwachsener Mikrokristalle von der Größe 10-50 nm entsteht.

Additional Material: 5 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/zaac.19905910109

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Kristallstruktur von (NMe4)2[Re3Br11(H2O)] [Re3Br9(H2O)3](H2O)2 (1993)

Möller, Angela ; Meyer, Gerd

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 619 (1993), S. 1655-1660

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ISSN: 0044-2313

Keywords: Rhenium ; Crystal Structure ; Hydrogen Bonding ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: Crystal Structure of (NMe4)2[Re3Br11(H2O)] [Re3Br9(H2O)3](H2O)2.(NMe4)2[Re3Br11(H2O)] [Re3Br9(H2O)3](H2O)2 crystallizes from hydrobromic acid solution of Re3Br9 · 2 H2O and NMe4Br at 0 - 5°C. The crystal structure (monoclinic; P21/m (Nr. 11); a = 967.9(3); b = 1 529.7(4); c = 1 710.9(4) pm; β = 91.66(2)°; Z = 2; R = 0.113; Rw = 0.068) has been determined from four-circle diffractometer data. The structure contains two different cluster units of trivalent rhenium, isolated anionic [Re3Br11(H2O)]2- units and neutral cluster units that are connected through crystal water molecules to chains∞1{[Re3Br9(H2O)3](H2O)2}.

Notes: (NMe4)2[Re3Br11(H2O)] [Re3Br9(H2O)3](H2O)2 kristallisiert aus einer bromwasserstoffsauren Lösung von Re3Br9 · 2 H2O und NMe4Br als dunkel-rotbraune Einkristalle bei 0 - 5°C aus. Die Kristallstruktur wurde aus Vierkreis-Diffraktometerdaten bestimmt: monoklin; P21/m (Nr. 11); a = 967,9(3); b = 1 529,7(4); c = 1 710,9(4) pm; β = 91,66(2)°; Z = 2; R = 0,113; Rw = 0,068. In der Struktur liegen zwei unterschiedliche Clustereinheiten vor: Eine anionische, isolierte Baueinheit, [Re3Br11(H2O)]2-, sowie eine neutrale über Kristallwasser zu Strängen gemäß ∞1{[Re3Br9(H2O)3](H2O)2} verknüpfte Einheit.

Additional Material: 4 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/zaac.19936191003

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