@article{HanspachRistow2005, author = {Hanspach, Dietrich and Ristow, Michael}, title = {Bericht {\"u}ber die 34. Brandenburgische Botanikertagung vom 20. bis 23. Juni 2003 in Ortrand}, year = {2005}, language = {de} } @article{MachatziRatschPrasseetal.2005, author = {Machatzi, Bernd and Ratsch, Andreas and Prasse, R{\"u}diger and Ristow, Michael}, title = {Rote Liste und Gesamtartenliste der Heuschrecken und Grillen (Saltatoria: Ensifera et Caelifera) von Berlin}, isbn = {3-00016815-x}, year = {2005}, abstract = {This Red List of grasshoppers and crickets for Berlin is the first that treats the whole area of Berlin, since the two preceding lists focused only on the western parts of the formerly divided city. Until now 54 species of grasshoppers and crickets have been recorded in the area. 46 species have been found to be well established in the wild, while eight species were only non breeding accidental immigrants or species whose successful reproduction has only been observed in greenhouses or similar structures. Of the 46 species being well established in the past and/or present 22 must be included in one of the threat categories, indicating that the populations of these species are already endangered. Additionally, seven species belong to the category "Near Threatened". Only 17 of the grasshopper and cricket species of Berlin are not threatened.}, language = {de} } @article{RohnerRistow2005, author = {Rohner, Ria and Ristow, Michael}, title = {Ein isoliertes Vorkommen kontinentaler Trockenrasen-Pflanzen in den Gorrenbergen bei Medewitz (Hoher Fl{\"a}ming)}, year = {2005}, language = {de} } @article{ThierbachSchulzIskenetal.2005, author = {Thierbach, Ren{\`e} and Schulz, Tim Julius and Isken, Frank and Voigt, Aanja and Mietzner, Brun and Drewes, Gunnar and von Kleist-Retzow, J{\"u}rgen-Christoph and Wiesner, Rudolf J. and Magnuson, Mark A. and Puccio, Helene and Pfeiffer, Andreas F. H. and Steinberg, Pablo and Ristow, Michael}, title = {Targeted disruption of hepatic frataxin expression causes impaired mitochondrial function, decreased life span and tumor growth in mice}, year = {2005}, abstract = {We have disrupted expression of the mitochondrial Friedreich ataxia protein frataxin specifically in murine hepatocytes to generate mice with impaired mitochondrial function and decreased oxidative phosphorylation. These animals have a reduced life span and develop multiple hepatic tumors. Livers also show increased oxidative stress, impaired respiration and reduced ATP levels paralleled by reduced activity of iron-sulfur cluster (Fe/S) containing proteins (ISP), which all leads to increased hepatocyte turnover by promoting both apoptosis and proliferation. Accordingly, phosphorylation of the stress-inducible p38 MAP kinase was found to be specifically impaired following disruption of frataxin. Taken together, these findings indicate that frataxin may act as a mitochondrial tumor suppressor protein in mammals}, language = {en} }