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15 results on '"Carrano, Mary W."'

3. Laminaria kelps impact iodine speciation chemistry in coastal seawater

Author

Carrano, Mary W. Carrano, Carl J. Edwards, Matthew S. and Al-Adilah, Hanan Fontana, Yann Sayer, Martin D. J. Katsaros, Christos Raab, Andrea Feldmann, Joerg Kupper, Frithjof C.

Abstract

Kelp (Laminaria digitata) uses iodide as a unique inorganic antioxidant to protect its surface and apoplastic space against reactive oxygen species such as ozone, hydrogen peroxide and superoxide, with implications for atmospheric and marine chemistry as well as regional climatic processes. If kelp is covered by seawater, this results in iodide leaching into surrounding sea water. In this study, the influence of the kelps Laminaria digitata, L. hyperborea, L. ochroleuca and Saccharina latissima on iodine speciation chemistry was explored at two sites in Oban (Argyll, Scotland) and Roscoff (Brittany, France) based on diver-operated in situ sampling. Seawater samples were subsequently analysed voltammetrically, accompanied by determination of extractable iodine concentrations in the tissues of the thalli surveyed by ICP-MS. The main result is that iodide concentrations in the vicinity of kelp thalli are strongly enhanced, especially at low tide, while iodate concentrations are decreased in comparison to open coastal water and open ocean concentrations.

Published
2021

7. Interaction of oxo-bridged vanadium(III) phenanthroline and bipyridine dimers with DNA

Author

Heater, Shiela J., Carrano, Mary W., Rains, Douglas, Walter, Ronald B., David Ji, Carrano, Carl J., Czernuszewicz, Roman S., and Quing Yan

Subjects
Chemical compounds -- Research, Chemical compounds -- Chemical properties, DNA -- Testing, Chemistry
Abstract

Cationic mu-oxo V(III) dimers of the type [V2OL4Cl2](super 2+) (l = 1,10-phenanthroline, 3,4,7,8-tetramethyl-1,10-phenanthroline, 4,7-diphenyl-1,10-phenanthroline, or 2,2'-bipyridine) are shown to interact strongly with DNA and to lead ultimately to its degradation. Hydrogen peroxide is implicated as a partner in this redox event, based on the effects of the enzymes SOD and catalase.

Published
2000

14. Guest Preorganization: An Alternative “Bioinspired” Paradigm in Host–Guest Chemistry<FNR HREF="fnxx"></FNR> <FN ID="fnxx"> This work was supported in part by Grants AI-1157 from the Robert A. Welch Foundation and CHE-9726488 from the NSF. The NSF-ILI program grant USE-9151286 is acknowledged for partial support of the X-ray diffraction facilities at Southwest Texas State University. We also thank Prof. Michael Blanda for valuable discussions. </FN>

Author

Hammes, Brian S., Luo, Xuemei, Carrano, Mary W., and Carrano, Carl J.

Abstract

No Abstract

Published
2002
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