TY  - JOUR
A1  - Röth, A.
A1  - Slabu, I.
A1  - Kolvenbach, K.
A1  - Engelmann, Ulrich M.
A1  - Baumann, M.
A1  - Schmitz-Rode, T.
A1  - Trahms, L.
A1  - Neumann, U.
T1  - Aufnahmekinetik von magnetischen Nanopartikeln zur Tumortherapie in humanen Pankreaskarzinomzelllinien
JF  - Zeitschrift für Gastroenterologie
Y1  - 2015
U6  - http://dx.doi.org/10.1055/s-0035-1559529
SN  - 1439-7803
VL  - 53
IS  - 8
SP  - KC139
PB  - Thieme
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Engelmann, Ulrich M.
A1  - Buhl, Eva Miriam
A1  - Baumann, Martin
A1  - Schmitz-Rode, Thomas
A1  - Slabu, Ioana
T1  - Agglomeration of magnetic nanoparticles and its effects on magnetic hyperthermia
JF  - Current Directions in Biomedical Engineering
Y1  - 2017
U6  - http://dx.doi.org/10.1515/cdbme-2017-0096
SN  - 2364-5504
VL  - 3
IS  - 2
SP  - 457
EP  - 460
PB  - De Gruyter
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Chen, Chao
A1  - Jost, Peter
A1  - Volker, Hanno
A1  - Kaminski, Marvin
A1  - Wirtssohn, Matti R.
A1  - Engelmann, Ulrich M.
A1  - Krüger, K.
A1  - Schlich, Franziska F.
A1  - Schlockermann, Carl
A1  - Lobo, Ricardo P.S.M.
A1  - Wuttig, Matthias
T1  - Dielectric properties of amorphous phase-change materials
JF  - Physical Review B
Y1  - 2017
U6  - http://dx.doi.org/10.1103/PhysRevB.95.094111
SN  - 2469-9950
VL  - 95
IS  - 9
SP  - Article number 094111
ER  - 
TY  - JOUR
A1  - Röth, A.A.
A1  - Slabu, I.
A1  - Engelmann, Ulrich M.
A1  - Baumann, M.
A1  - Schmitz-Rode, T.
A1  - Neumann, U. P.
T1  - Targeting von gastroenterologischen Tumoren mittels magnetischer Nanopartikel zur hyperthermischen Therapie
JF  - Zeitschrift für Gastroenterologie
Y1  - 2017
U6  - http://dx.doi.org/10.1055/s-0037-1605124
VL  - 55
IS  - 8
SP  - KV-384
PB  - Thieme
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Engelmann, Ulrich M.
A1  - Roeth, Anjali A.J.
A1  - Eberbeck, Dietmar
A1  - Buhl, Eva Miriam
A1  - Neumann, Ulf Peter
A1  - Schmitz-Rode, Thomas
A1  - Slabu, Ioana
T1  - Combining Bulk Temperature and Nanoheating Enables Advanced Magnetic Fluid Hyperthermia Efficacy on Pancreatic Tumor Cells
JF  - Scientific Reports
N2  - Many efforts are made worldwide to establish magnetic fluid hyperthermia (MFH) as a treatment for organ-confined tumors. However, translation to clinical application hardly succeeds as it still lacks of understanding the mechanisms determining MFH cytotoxic effects. Here, we investigate the intracellular MFH efficacy with respect to different parameters and assess the intracellular cytotoxic effects in detail. For this, MiaPaCa-2 human pancreatic tumor cells and L929 murine fibroblasts were loaded with iron-oxide magnetic nanoparticles (MNP) and exposed to MFH for either 30 min or 90 min. The resulting cytotoxic effects were assessed via clonogenic assay. Our results demonstrate that cell damage depends not only on the obvious parameters bulk temperature and duration of treatment, but most importantly on cell type and thermal energy deposited per cell during MFH treatment. Tumor cell death of 95% was achieved by depositing an intracellular total thermal energy with about 50% margin to damage of healthy cells. This is attributed to combined intracellular nanoheating and extracellular bulk heating. Tumor cell damage of up to 86% was observed for MFH treatment without perceptible bulk temperature rise. Effective heating decreased by up to 65% after MNP were internalized inside cells.
Y1  - 2018
U6  - http://dx.doi.org/10.1038/s41598-018-31553-9
SN  - 2045-2322
VL  - 8
IS  - 1
SP  - Article number 13210
PB  - Springer Nature
CY  - Cham
ER  - 
TY  - JOUR
A1  - Engelmann, Ulrich M.
A1  - Buhl, Eva Miriam
A1  - Draack, Sebastian
A1  - Viereck, Thilo
A1  - Frank, 
A1  - Schmitz-Rode, Thomas
A1  - Slabu, Ioana
T1  - Magnetic relaxation of agglomerated and immobilized iron oxide nanoparticles for hyperthermia and imaging applications
JF  - IEEE Magnetic Letters
N2  - Magnetic nanoparticles (MNPs) are used as therapeutic and diagnostic agents for local delivery of heat and image contrast enhancement in diseased tissue. Besides magnetization, the most important parameter that determines their performance for these applications is their magnetic relaxation, which can be affected when MNPs immobilize and agglomerate inside tissues. In this letter, we investigate different MNP agglomeration states for their magnetic relaxation properties under excitation in alternating fields and relate this to their heating efficiency and imaging properties. With focus on magnetic fluid hyperthermia, two different trends in MNP heating efficiency are measured: an increase by up to 23% for agglomerated MNP in suspension and a decrease by up to 28% for mixed states of agglomerated and immobilized MNP, which indicates that immobilization is the dominant effect. The same comparatively moderate effects are obtained for the signal amplitude in magnetic particle spectroscopy.
Y1  - 2018
U6  - http://dx.doi.org/10.1109/LMAG.2018.2879034
SN  - 1949-307X
VL  - 9
IS  - Article number 8519617
PB  - IEEE
CY  - New York, NY
ER  - 
TY  - JOUR
A1  - Engelmann, Ulrich M.
A1  - Shasha, Carolyn
A1  - Teeman, Eric
A1  - Slabu, Iona
A1  - Krishnan, Kannan M.
T1  - Predicting size-dependent heating efficiency of magnetic nanoparticles from experiment and stochastic Néel-Brown Langevin simulation
JF  - Journal of Magnetism and Magnetic Materials
Y1  - 2019
U6  - http://dx.doi.org/10.1016/j.jmmm.2018.09.041
SN  - 0304-8853
VL  - 471
IS  - 1
SP  - 450
EP  - 456
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Engelmann, Ulrich M.
A1  - Seifert, Julian
A1  - Mues, Benedikt
A1  - Roitsch, Stefan
A1  - Ménager, Christine
A1  - Schmidt, Annette M.
A1  - Slabu, Ioana
T1  - Heating efficiency of magnetic nanoparticles decreases with gradual immobilization in hydrogels
JF  - Journal of Magnetism and Magnetic Materials
Y1  - 2019
U6  - http://dx.doi.org/10.1016/j.jmmm.2018.09.113
SN  - 0304-8853
VL  - 471
IS  - 1
SP  - 486
EP  - 494
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - THES
A1  - Engelmann, Ulrich M.
T1  - Assessing magnetic fluid hyperthermia : magnetic relaxation simulation, modeling of nanoparticle uptake inside pancreatic tumor cells and in vitro efficacy
Y1  - 2019
SN  - 978-3-945954-58-4
N1  - Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2019
PB  - Infinite Science Publishing
CY  - Lübeck
ER  - 
TY  - GEN
A1  - Engelmann, Ulrich M.
T1  - Gesprächsführungskompetenzen für Naturwissenschaftler und Ingenieure. Maßnahmen zur Förderung und curricularen Verankerung von Gesprächsführungskompetenzen an Fachhochschulen
T1  - Conversational Skills for Scientists and Engineers. - Measures for the Development and Curricular Promotion of Conversational Competences at German Universities of Applied Science
Y1  - 2019
U6  - http://dx.doi.org/10.13140/RG.2.2.34026.98248
PB  - Deutsche Gesellschaft für Sprechwissenschaft und Sprecherziehung (DGSS e.V.)
CY  - Aachen
ER  -