@article{MaschwitzFialaDolling1987,
  author    = {Maschwitz, U. and Fiala, Brigitte and Dolling, W. R.},
  title     = {New trophobiotic symbioses of ants with South East Asian bugs},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-34030},
  year      = {1987},
  abstract  = {A trophobiotic relationship between two species of phloem-feeding plataspid bugs and an ant, Meranoplus mucronatus, was discovered on tree trunks in Malaysia. Similar relationships were found between coreid bugs and Crematogaster sp. and Anoplolepis longipes, on bamboo in the same area. The ants recruit to groups of the bugs and feed on the liquid, sugar-rich faeces of the larvae, stimulating release of the honeydew by tactile signals. They protect all stages of the bugs from disturbance by biting and by the use of defensive secretions. Phloem-feeding bugs in the families Plataspidae and Coreidae need long sty lets to pierce the thick bark of their host tree. The different methods of accommodating the resting stylets in these two families are described. The plataspids are described as Tropidotylus servus sp. novo and T. minister sp. novo A coreid previously reported in association with M. mucronatus in Malaya is described as Hygia cliens sp. novo The coreids on bamboo were determined as Cloresmus spp. and Notobitus affinis.},
  language  = {en}
}
@incollection{HandmanMitchellMcConvilleetal.1987,
  author    = {Handman, E. and Mitchell, G. F. and McConville, M. J. and Moll, Heidrun},
  title     = {Towards a carbohydrate-based vaccine against leishmaniasis},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-33827},
  publisher      = {Universit{\"a}t W{\"u}rzburg},
  year      = {1987},
  abstract  = {No abstract available},
  language  = {en}
}
@article{ReimerRoseScheeretal.1987,
  author    = {Reimer, Georg and Rose, Kathleen M. and Scheer, Ulrich and Tan, Eng M.},
  title     = {Autoantibody to RNA polymerase I in scleroderma sera},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-34294},
  year      = {1987},
  abstract  = {Autoantibodies to components of the nucleolus are a unique serological feature of patients with scleroderma. There are autoantibodies of several specificities; one type produces a speckled pattern of nucleolar staining in immunofluorescence. In actinomycin D and 5,6-dichloro-{j-D-ribofuranosylbenzimidazoletreated Vero cells, staining was restricted to the fibrillar and not the granular regions. By double immunofluorescence, specific rabbit anti-RNA polymerase I antibodies stained the same fibrillar structures in drug-segregated nucleoli as scleroderma sera. Scleroderma sera immunoprecipitated 13 polypeptides from (35S)methionine-labeled HeLa cell extract with molecular weights ranging from 210,000 to 14,000. Similar polypeptides were precipitated by rabbit anti-RNA polymerase I antibodies, and their common identities were confirmed in immunoabsorption experiments. Microinjection of purified IgG from a patient with speckled nucleolar staining effectively inhibited ribosomal RNA transcription. Autoantibodies to RNA polymerase I were restricted to certain patients with scleroderma and were not found in other autoimmune diseases.},
  language  = {en}
}
@incollection{FalesTusaWilhelmetal.1987,
  author    = {Fales, Frederick Marion and Tusa, Sebastiano and Wilhelm, Gernot and Zaccagnini, Carlo},
  title     = {German-Italian expedition to Iraq: preliminary report on the first campaign of excavations within the Saddam Dam Reservoir Archaeological Rescue Project (1984)},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-78053},
  publisher      = {Universit{\"a}t W{\"u}rzburg},
  year      = {1987},
  abstract  = {No abstract available},
  subject      = {Orientalistik},
  language  = {en}
}
@incollection{LohseKlotzSchwabe1987,
  author    = {Lohse, Martin J. and Klotz, Karl-Norbert and Schwabe, Ulrich},
  title     = {Functional characterization of A1 adenoosine receptors by photoaffinity labelling},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-86097},
  publisher      = {Universit{\"a}t W{\"u}rzburg},
  year      = {1987},
  abstract  = {The ligand-binding subunit ofthe A1 adenosine receptor has been identified in membranes with the photoaffinity Iabel R-2-azido-N6-p-hydroxyphenylisopropyladenosine (R-AHPIA). Covalent labelling ofthe A1 receptor can also be achieved in intact cells. The dissociation of the radioiodinated label (1251-AHPIA) from isolated rat fat cells was incomplete after UV irradiation, leaving about 20°/o of irreversible specific binding. Such covalent labelling of the receptor led to a concentration-dependent reduction of cellular cyclic AMP levels. This persistent effect of covalent labeHing occurred with an IC50 value of 9 nM, as compared to an IC50 value of 0.9 nM for the direct reduction of cyclic AMP Ievels by the ligand. The difference in the IC5o values can be explained by assuming spare receptors. This hypothesis was verified in binding studies using [ 3HJPIA as a radioligand. R-AHPIA inhibited binding of [3H)PIA to intact fat cells with a K1 value of about 20 nM, which is about 20 tim es high er than the corresponding IC50 value of cyclic AMP reduction. These data show that the A1 receptor is activated according to the occupancy theory. The high sensitivity of the activation in intact ceJis is due to a large number of spare receptors.},
  subject      = {Adenosinrezeptor},
  language  = {en}
}
@inproceedings{Klawitter1987,
  author    = {Klawitter, J{\"o}rg},
  title     = {Umwelt, Mitwelt, Nachwelt im Fokus einer verantworteten Wissenschaft},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-87040},
  year      = {1987},
  abstract  = {No abstract available.},
  subject      = {Umweltschutz},
  language  = {de}
}
@incollection{ShephardSchlatterLutz1987,
  author    = {Shephard, S. E. and Schlatter, C. and Lutz, Werner K.},
  title     = {Model risk analysis of nitrosatable compounds in the diet as precursors of potential endogenous carcinogens},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-86188},
  publisher      = {Universit{\"a}t W{\"u}rzburg},
  year      = {1987},
  abstract  = {The potential health risk posed by the endogenous formation of N-nitroso compounds (NOC) from nitrosation of dietary ureas, guanidines, amides, amino acids and amanes (primary, secondary and aromatic) was estimated according to the model: Risk = ( daily intake of precursor] X (gastric concentration of nitrite ]n X [nitrosatability rate constant] X [cilrcinogenicity of derivative]. The daily intakes ofthese compound classes span five orders ofmagnitude (100 g/day amides, top; 1-10 mg/day secondary amines, ureas, bottom); the nitrosation rate constants span seven orders of magnitude (aryl amines, ureas, top; amides, secondary amines, bottom); and the carcinogenicity estimates span a 10 000-fold range from 'very strong' to 'virtually noncarcinogenic'. The resulting risk estimates likewise span an enormous range (nine orders of magnitude ): dietary ureas and aromatic amines combined with high nitrite concentration could pose as great a risk as the intake of preformed N-nitrosodimethylamine in the diet. In contrast, the risk posed by the in-vivo nitrosation of primary and secondary amines is probably negligible. The risk contributed by amides (including protein), guanidines and primary amino acids is intermediate between these two extremes.},
  subject      = {Risikoanalyse},
  language  = {en}
}
@incollection{ShephardHegiLutz1987,
  author    = {Shephard, S. E. and Hegi, M. E. and Lutz, Werner K.},
  title     = {In-vitro assays to detect alkylating and mutagenic activities of dietary components nitrosated in situ},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-86194},
  publisher      = {Universit{\"a}t W{\"u}rzburg},
  year      = {1987},
  abstract  = {Nitrosation of dietary components has been combined with the 4-(para-nitrobenzyl)pyridine (NBP) colorimetric test for screening alkylating agents and with the Ames test for the detection of mutagenic activity. This allowed the investigation of short-hved nitrosation products of dietary components which generate electrophilic degradation products requiring no metabolic activation (natural amino acids and some derivatives, ureas, guanidines, primary alkyl and aryl amines). In a first system, precursor, nitrous acid and NBP were present simultaneously. All amino acids tested, except glutamic acid and glutamine, gave positive results. The reactivities spanned more than three orders of magnitude, with the aromatic amino acids and methionine the most active; two primary amines, tryptamine and histamine, were also strongly reactive. All guanidines tested, except the amino acid arginine, gave negative results. A second system consisted of two phases: NBP was added only after destruction of residual nitrite and adjustment of the pH to neutrality. This system was useful for the study of ureas, which are stable in acid but not in neutral media. The range of responses covered more than two orders of magnitude. Most amino acids and primary amines also gave positive results, but could be assessed only after analysing the kinetics of the competing reactions and choosing appropriate reaction times. In a third system, Salmonella typhimurium strain TA1OO replaced NBP. Representatives of the class of amino acids, ureas, the primary amine tryptamine, and aniline became higbly mutagenic upon nitrosation. Methylguanidine was only weakly mutagenic under the present assay conditions. The results indicate that further studies with unstable nitrosation products of dietary components are required to understand more thoroughly the role of endogenous nitrosation in gastric cancer.},
  subject      = {Medizin},
  language  = {en}
}
@article{Koenig1987,
  author    = {K{\"o}nig, Dorothea},
  title     = {Materialien zu den Fragmenten des Mihanovic-Homiliars},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-38603},
  year      = {1987},
  abstract  = {No abstract available},
  language  = {ru}
}
@article{ScheerMessnerHazanetal.1987,
  author    = {Scheer, Ulrich and Messner, Karin and Hazan, Rachel and Raska, Ivan and Hansmann, Paul and Falk, Heinz and Spiess, Eberhard and Franke, Werner W.},
  title     = {High sensitivity immunolocalization of double and single-stranded DNA by a monoclonal antibody},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-41063},
  year      = {1987},
  abstract  = {A monoclonal antibody (AK 30-10) is described which specifically reacts with DNA both in double and single-stranded forms but not with other molecules and structures, including deoxyribonucleotides and RNAs. When used in immunocytochemical experiments on tissue sections and permeabilized cultured cells, this antibody detects DNA-containing structures, even when the DNA is present in very small amounts. Examples of high resolution detection include the DNA present in amplified extrachromosomal nucleoli, chromomeres of lampbrush chromosomes, mitochondria, chloroplasts and mycoplasmal particles. In immunoelectron microscopy using the immunogold technique, the DNA was localized in distinct substructures such as the "fibrillar centers" of nucleoli and certain stromal centers in chloroplasts. The antibody also reacts with DNA of chromatin of living cells, as shown by microinjection into cultured mitotic cells and into nuclei of amphibian oocytes. The potential value and the limitations of immunocytochemical DNA detection are discussed.},
  subject      = {Cytologie},
  language  = {en}
}