@article{HeinsenHennEisenmengeretal.1994, author = {Heinsen, Helmut and Henn, R. and Eisenmenger, W. and G{\"o}tz, M. and Bohl, J. and Bethke, B. and Lockermann, U. and P{\"u}schel, K.}, title = {Quantitative investigations on the human entorhinal area: left - right asymmetry and age-related changes}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-59946}, year = {1994}, abstract = {The total nerve cell numbers in the right and in the left human entorhinal areas have been calculated by volume estimations with the Cavalieri principle and by cell density determinations with the optical disector. Thick gallocyanin-stained serial frozen sections through the parahippocampal gyrus of 22 human subjects (10 female, 12 male) ranging from 18 to 86 years were analysed. The laminar composition of gallocyanin (Nissl)-stained sections could easily be compared with Braak's (1972, 1980) pigmentoarchitectonic study, and Braak's nomenclature of the entorhinal laminas was adopted. Cellsparse laminae dissecantes can more clearly be distinguished in Nissl than in aldehydefuchsin preparations. These cell-poor dissecantes, lamina dissecans extema (dis-ext), lamina dissecans 1 (dis-1) and lamina dissecans 2 (dis-2), were excluded from nerve cell nurober determinations. An exact delineation of the entorhinal area is indispensable for any kind of quantitative investigation. We have defined the entorhinal area by the presence of pre-alpha ceil clusters and the deeper layers of lamina principalis externa (pre-beta and gamma) separated from lamina principalis interna (pri) by lamina dissecans 1 (dis-1). The human entorhinal area is quantitatively characterized by a left-sided (asymmetric) higher pre-alpha cell number and an age-related nerve cell loss in pre as well as pri layers. At variance with other CNS cortical and subcortical structures, the neuronal number of the entorhinal area appears to decrease continuously from the earliest stages analysed, although a secular trend has to be considered. The asymmetry in pre-alpha cell number is discussed in the context of higher human mental capabilities, especially language.}, subject = {Medizin}, language = {en} } @inproceedings{GotzSchartl1994, author = {Gotz, R. and Schartl, Manfred}, title = {The conservation of neurotrophic factors during vertebrate evolution}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-61964}, year = {1994}, abstract = {No abstract available}, subject = {Physiologische Chemie}, language = {en} } @article{ZanuccoGoetzPotapenkoetal.2011, author = {Zanucco, Emanuele and G{\"o}tz, Rudolf and Potapenko, Tamara and Carraretto, Irene and Ceteci, Semra and Ceteci, Fatih and Seeger, Werner and Savai, Rajkumar and Rapp, Ulf R.}, title = {Expression of B-RAF V600E in Type II Pneumocytes Causes Abnormalities in Alveolar Formation, Airspace Enlargement and Tumor Formation in Mice}, series = {PLOS ONE}, volume = {6}, journal = {PLOS ONE}, number = {12}, doi = {10.1371/journal.pone.0029093}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-137061}, pages = {e29093}, year = {2011}, abstract = {Growth factor induced signaling cascades are key regulatory elements in tissue development, maintenance and regeneration. Perturbations of these cascades have severe consequences, leading to developmental disorders and neoplastic diseases. As a major function in signal transduction, activating mutations in RAF family kinases are the cause of human tumorigenesis, where B-RAF V600E has been identified as the prevalent mutant. In order to address the oncogenic function of B-RAF V600E, we have generated transgenic mice expressing the activated oncogene specifically in lung alveolar epithelial type II cells. Constitutive expression of B-RAF V600E caused abnormalities in alveolar epithelium formation that led to airspace enlargements. These lung lesions showed signs of tissue remodeling and were often associated with chronic inflammation and low incidence of lung tumors. The inflammatory cell infiltration did not precede the formation of the lung lesions but was rather accompanied with late tumor development. These data support a model where the continuous regenerative process initiated by oncogenic B-RAF-driven alveolar disruption provides a tumor-promoting environment associated with chronic inflammation.}, language = {en} } @article{PfeifferGoetzXiangetal.2013, author = {Pfeiffer, Verena and G{\"o}tz, Rudolf and Xiang, Chaomei and Camarero, Guadelupe and Braun, Attila and Zhang, Yina and Blum, Robert and Heinsen, Helmut and Nieswandt, Bernhard and Rapp, Ulf R.}, title = {Ablation of BRaf Impairs Neuronal Differentiation in the Postnatal Hippocampus and Cerebellum}, series = {PLoS ONE}, volume = {8}, journal = {PLoS ONE}, number = {3}, doi = {10.1371/journal.pone.0058259}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-130304}, pages = {e58259}, year = {2013}, abstract = {This study focuses on the role of the kinase BRaf in postnatal brain development. Mice expressing truncated, non-functional BRaf in neural stem cell-derived brain tissue demonstrate alterations in the cerebellum, with decreased sizes and fuzzy borders of the glomeruli in the granule cell layer. In addition we observed reduced numbers and misplaced ectopic Purkinje cells that showed an altered structure of their dendritic arborizations in the hippocampus, while the overall cornus ammonis architecture appeared to be unchanged. In male mice lacking BRaf in the hippocampus the size of the granule cell layer was normal at postnatal day 12 (P12) but diminished at P21, as compared to control littermates. This defect was caused by a reduced ability of dentate gyrus progenitor cells to differentiate into NeuN positive granule cell neurons. In vitro cell culture of P0/P1 hippocampal cells revealed that BRaf deficient cells were impaired in their ability to form microtubule-associated protein 2 positive neurons. Together with the alterations in behaviour, such as autoaggression and loss of balance fitness, these observations indicate that in the absence of BRaf all neuronal cellular structures develop, but neuronal circuits in the cerebellum and hippocampus are partially disturbed besides impaired neuronal generation in both structures.}, language = {en} } @article{RighessoTerekhovGoetzetal.2021, author = {Righesso, L. A. R. and Terekhov, M. and G{\"o}tz, H. and Ackermann, M. and Emrich, T. and Schreiber, L. M. and M{\"u}ller, W. E. G. and Jung, J. and Rojas, J. P. and Al-Nawas, B.}, title = {Dynamic contrast-enhanced magnetic resonance imaging for monitoring neovascularization during bone regeneration — a randomized in vivo study in rabbits}, series = {Clinical Oral Investigations}, volume = {25}, journal = {Clinical Oral Investigations}, number = {10}, issn = {1432-6981}, doi = {10.1007/s00784-021-03889-6}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-307614}, pages = {5843-5854}, year = {2021}, abstract = {Objectives Micro-computed tomography (μ-CT) and histology, the current gold standard methods for assessing the formation of new bone and blood vessels, are invasive and/or destructive. With that in mind, a more conservative tool, dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), was tested for its accuracy and reproducibility in monitoring neovascularization during bone regeneration. Additionally, the suitability of blood perfusion as a surrogate of the efficacy of osteoplastic materials was evaluated. Materials and methods Sixteen rabbits were used and equally divided into four groups, according to the time of euthanasia (2, 3, 4, and 6 weeks after surgery). The animals were submitted to two 8-mm craniotomies that were filled with blood or autogenous bone. Neovascularization was assessed in vivo through DCE-MRI, and bone regeneration, ex vivo, through μ-CT and histology. Results The defects could be consistently identified, and their blood perfusion measured through DCE-MRI, there being statistically significant differences within the blood clot group between 3 and 6 weeks (p = 0.029), and between the former and autogenous bone at six weeks (p = 0.017). Nonetheless, no significant correlations between DCE-MRI findings on neovascularization and μ-CT (r =-0.101, 95\% CI [-0.445; 0.268]) or histology (r = 0.305, 95\% CI [-0.133; 0.644]) findings on bone regeneration were observed. Conclusions These results support the hypothesis that DCE-MRI can be used to monitor neovascularization but contradict the premise that it could predict bone regeneration as well.}, language = {en} }