@article{RadeloffRamosTiradoHaddadetal.2021,
  author    = {Radeloff, Katrin and Ramos Tirado, Mario and Haddad, Daniel and Breuer, Kathrin and M{\"u}ller, Jana and Hochmuth, Sabine and Hackenberg, Stephan and Scherzad, Agmal and Kleinsasser, Norbert and Radeloff, Andreas},
  title     = {Superparamagnetic iron oxide particles (VSOPs) show genotoxic effects but no functional impact on human adipose tissue-derived stromal cells (ASCs)},
  series = {Materials},
  volume    = {14},
  journal   = {Materials},
  number    = {2},
  issn      = {1996-1944},
  doi       = {10.3390/ma14020263},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-222970},
  year      = {2021},
  abstract  = {Adipose tissue-derived stromal cells (ASCs) represent a capable source for cell-based therapeutic approaches. For monitoring a cell-based application in vivo, magnetic resonance imaging (MRI) of cells labeled with iron oxide particles is a common method. It is the aim of the present study to analyze potential DNA damage, cytotoxicity and impairment of functional properties of human (h)ASCs after labeling with citrate-coated very small superparamagnetic iron oxide particles (VSOPs). Cytotoxic as well as genotoxic effects of the labeling procedure were measured in labeled and unlabeled hASCs using the MTT assay, comet assay and chromosomal aberration test. Trilineage differentiation was performed to evaluate an impairment of the differentiation potential due to the particles. Proliferation as well as migration capability were analyzed after the labeling procedure. Furthermore, the labeling of the hASCs was confirmed by Prussian blue staining, transmission electron microscopy (TEM) and high-resolution MRI. Below the concentration of 0.6 mM, which was used for the procedure, no evidence of genotoxic effects was found. At 0.6 mM, 1 mM as well as 1.5 mM, an increase in the number of chromosomal aberrations was determined. Cytotoxic effects were not observed at any concentration. Proliferation, migration capability and differentiation potential were also not affected by the procedure. Labeling with VSOPs is a useful labeling method for hASCs that does not affect their proliferation, migration and differentiation potential. Despite the absence of cytotoxicity, however, indications of genotoxic effects have been demonstrated.},
  language  = {en}
}
@article{ShibanDiemerMuelleretal.2017,
  author    = {Shiban, Youssef and Diemer, Julia and M{\"u}ller, Jana and Br{\"u}tting-Schick, Johanna and Pauli, Paul and M{\"u}hlberger, Andreas},
  title     = {Diaphragmatic breathing during virtual reality exposure therapy for aviophobia: functional coping strategy or avoidance behavior? A pilot study},
  series = {BMC Psychiatry},
  volume    = {17},
  journal   = {BMC Psychiatry},
  doi       = {10.1186/s12888-016-1181-2},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-181007},
  pages     = {10},
  year      = {2017},
  abstract  = {Background: Although there is solid evidence for the efficacy of in vivo and virtual reality (VR) exposure therapy for a specific phobia, there is a significant debate over whether techniques promoting distraction or relaxation have impairing or enhancing effects on treatment outcome. In the present pilot study, we investigated the effect of diaphragmatic breathing (DB) as a relaxation technique during VR exposure treatment. Method: Twenty-nine patients with aviophobia were randomly assigned to VR exposure treatment either with or without diaphragmatic breathing (six cycles per minute). Subjective fear ratings, heart rate and skin conductance were assessed as indicators of fear during both the exposure and the test session one week later. Results: The group that experienced VR exposure combined with diaphragmatic breathing showed a higher tendency to effectively overcome the fear of flying. Psychophysiological measures of fear decreased and self-efficacy increased in both groups with no significant difference between the groups. Conclusions: Our findings indicate that diaphragmatic breathing during VR exposure does not interfere with the treatment outcome and may even enhance treatment effects of VR exposure therapy for aviophobic patients.},
  language  = {en}
}