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  • 1
    Digitale Medien
    Digitale Medien
    Mucosa-associated lymphoid tissue in human efferent tear ducts (2000)
    Springer
    Virchows Archiv 437 (2000), S. 185-189 
    Details
    ISSN: 1432-2307
    Schlagwort(e): Key words Extranodular tissue ; Immune defences ; Lymphoma ; Ocular adnexa
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract  The recent description of primary marginal zone lymphomas in human efferent tear ducts with typical features of lymphomas arising in mucosa-associated lymphoid tissue (MALT) infers the presence of MALT in the human efferent tear ducts. To date, studies have not established clearly whether organised MALT occurs in normal human efferent tear ducts. To elucidate this problem, efferent lacrimal pathways from unselected body donors with unknown prior history of efferent tear duct, ocular, or nasal disease were examined for the presence of organised MALT. Organised lymphoid tissue was found with the cytomorphological and immunophenotypic features of MALT in 41% of the cases examined. These findings suggest that MALT is a feature that, although it need not be present in normal efferent tear ducts, is acquired during life in a proportion of apparently asymptomatic individuals.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004280000248
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  • 2
    Digitale Medien
    Digitale Medien
    Konstitution und Krebs (1924)
    Springer
    Journal of cancer research and clinical oncology 21 (1924), S. 119-130 
    Details
    ISSN: 1432-1335
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02310238
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  • 3
    Digitale Medien
    Digitale Medien
    ATP-driven succinate oxidation in the catabolism of Desulfuromonas acetoxidans (1986)
    Springer
    Archives of microbiology 144 (1986), S. 78-83 
    Details
    ISSN: 1432-072X
    Schlagwort(e): Desulfuromonas acetoxidans ; Succinate oxidation ; Sulphur reduction ; Acetate oxidation ; Citric acid cycle ; Reverse of electron transport ; Menaquinone ; ATP synthase ; Succinate dehydrogenase ; Sulphur reductase ; NADH dehydrogenase
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The oxidation of succinate with elemental sulphur in Desulfuromonas acetoxidans was investigated using a membrane preparation of this bacterium. The following results were obtained: 1. The preparation catalyzed the oxidation of succinate with sulphur and NAD. These reactions were dependent on ATP and were abolished by the presence of protonophores or dicyclohexylcarbodiimide (DCCD). 2. The membrane preparation also catalyzed the reduction of fumarate with H2S or with NADH. These activities were not dependent on ATP and were not affected by protonophores or DCCD. 3. By extraction-reincorporation experiments it could be shown that menaquinone is involved in electron transport between H2S and fumarate and between NADH and fumarate. 4. The membrane fraction catalyzed the reduction of the water-soluble menaquinone-analogue dimethylnaphthoquinone (DMN) by succinate, H2S, or NADH, and the oxidation of DMNH2 by fumarate. These activities were not dependent on the presence of menaquinone and were not influenced by ATP. 5. The activities involving succinate oxidation or fumarate reduction were similarly sensitive to 2(n-nonyl)-4-hydroxyquinoline-N-oxide, while H2S and NADH oxidation by DMN were not affected by the inhibitor. It is concluded that the catabolism of D. acetoxidans involves the energy-driven oxidation of succinate with elemental sulphur or NAD as electron acceptors and that menaquinone is a component of the electron transport chain catalyzing these reactions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00454960
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