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  • *Polymorphism, Single Nucleotide  (1)
  • ANT-XIX/2; AWI; Caete_mangr; Carbon, organic, dissolved; CTD, Seabird; CTD-R; Date/Time of event; DEPTH, water; Equatorial West Atlantic; Event label; High temperature catalytic oxidation; Latitude of event; Longitude of event; Percentage; Polarstern; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; PS61; PS61/024-1; PS61/027-1; PS61/031-1; Salinity; Sample type; SPP1158; Station label; Water sample; Weddell Sea; WS  (1)
  • 2005-2009  (2)
  • 1940-1944
Collection
Keywords
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  • 2005-2009  (2)
  • 1940-1944
Year
  • 1
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    (Table 1) Salinity and dissolved organic carbon concentration of marine water (ANT-XIX/2) and mangrove porewater (Brazil) (2005)
    PANGAEA
    In:  Supplement to: Koch, Boris P; Witt, Matthias; Engbrodt, Ralph; Dittmar, Thorsten; Kattner, Gerhard (2005): Molecular formulae of marine and terrigenous dissolved organic matter detected by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry. Geochimica et Cosmochimica Acta, 69(13), 3299-3308, https://doi.org/10.1016/j.gca.2005.02.027
    Details
    Publication Date: 2024-06-26
    Description: The chemical structure of refractory marine dissolved organic matter (DOM) is still largely unknown. Electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR-MS) was used to resolve the complex mixtures of DOM and provide valuable information on elemental compositions on a molecular scale. We characterized and compared DOM from two sharply contrasting aquatic environments, algal-derived DOM from the Weddell Sea (Antarctica) and terrigenous DOM from pore water of a tropical mangrove area in northern Brazil. Several thousand molecular formulas in the mass range of 300-600 Da were identified and reproduced in element ratio plots. On the basis of molecular elemental composition and double-bond equivalents (DBE) we calculated an average composition for marine DOM. O/C ratios in the marine samples were lower (0.36 ± 0.01) than in the mangrove pore-water sample (0.42). A small proportion of chemical formulas with higher molecular mass in the marine samples were characterized by very low O/C and H/C ratios probably reflecting amphiphilic properties. The average number of unsaturations in the marine samples was surprisingly high (DBE = 9.9; mangrove pore water: DBE = 9.4) most likely due to a significant contribution of carbonyl carbon. There was no significant difference in elemental composition between surface and deep-water DOM in the Weddell Sea. Although there were some molecules with unique marine elemental composition, there was a conspicuous degree of similarity between the terrigenous and algal-derived end members. Approximately one third of the molecular formulas were present in all marine as well as in the mangrove samples. We infer that different forms of microbial degradation ultimately lead to similar structural features that are intrinsically refractory, independent of the source of the organic matter and the environmental conditions where degradation took place.
    Keywords: ANT-XIX/2; AWI; Caete_mangr; Carbon, organic, dissolved; CTD, Seabird; CTD-R; Date/Time of event; DEPTH, water; Equatorial West Atlantic; Event label; High temperature catalytic oxidation; Latitude of event; Longitude of event; Percentage; Polarstern; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; PS61; PS61/024-1; PS61/027-1; PS61/031-1; Salinity; Sample type; SPP1158; Station label; Water sample; Weddell Sea; WS
    Type: Dataset
    Format: text/tab-separated-values, 35 data points
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    DATA PANGAEA
  • 2
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    Neural mechanisms of a genome-wide supported psychosis variant (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-05-02
    Description: Schizophrenia is a devastating, highly heritable brain disorder of unknown etiology. Recently, the first common genetic variant associated on a genome-wide level with schizophrenia and possibly bipolar disorder was discovered in ZNF804A (rs1344706). We show, by using an imaging genetics approach, that healthy carriers of rs1344706 risk genotypes exhibit no changes in regional activity but pronounced gene dosage-dependent alterations in functional coupling (correlated activity) of dorsolateral prefrontal cortex (DLPFC) across hemispheres and with hippocampus, mirroring findings in patients, and abnormal coupling of amygdala. Our findings establish disturbed connectivity as a neurogenetic risk mechanism for psychosis supported by genome-wide association, show that rs1344706 or variation in linkage disequilibrium is functional in human brain, and validate the intermediate phenotype strategy in psychiatry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Esslinger, Christine -- Walter, Henrik -- Kirsch, Peter -- Erk, Susanne -- Schnell, Knut -- Arnold, Claudia -- Haddad, Leila -- Mier, Daniela -- Opitz von Boberfeld, Carola -- Raab, Kyeon -- Witt, Stephanie H -- Rietschel, Marcella -- Cichon, Sven -- Meyer-Lindenberg, Andreas -- New York, N.Y. -- Science. 2009 May 1;324(5927):605. doi: 10.1126/science.1167768.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, University of Heidelberg, J5, 68159 Mannheim, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19407193" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Affective Symptoms/genetics/physiopathology ; Bipolar Disorder/genetics/physiopathology ; Brain Mapping ; Female ; Genetic Predisposition to Disease ; Genome-Wide Association Study ; Genotype ; Hippocampus/*physiology ; Humans ; Kruppel-Like Transcription Factors/*genetics ; Magnetic Resonance Imaging ; Male ; Mental Processes ; Phenotype ; *Polymorphism, Single Nucleotide ; Prefrontal Cortex/*physiology ; Schizophrenia/*genetics/physiopathology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    PAPER CURRENT
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