246 research outputs found
Prognosis after high-dose chemotherapy followed by autologous stem-cell transplantation as first-line treatment in primary CNS lymphoma—a long-term follow-up study
Background High-dose chemotherapy followed by autologous stem-cell transplantation (HCT-ASCT) is a promising approach in eligible patients with primary central nervous system lymphoma (PCNSL). We report long-term data of patients who were treated according to HCT-ASCT containing protocols. Patients and methods We analyzed survival and relapse rates in 43 (<67 years) immunocompetent patients with newly diagnosed PCNSL being treated according to two different high-dose methotrexate-based protocols followed by high-dose carmustine/thiotepa (BCNU/TT) plus ASCT (±whole brain irradiation). Analysis was conducted for all patients (intention-to-treat) and those patients who actually received HCT-ASCT (per-protocol). Results Thirty-four patients achieved complete remission, of those 12 relapsed (35%), while 6 of them relapsed 5 years after diagnosis. After a median follow-up of 120 months, median overall survival (OS) was reached after 104 months. Two- and 5-year OS was 81% and 70% and 2- and 5-year event-free survival (EFS) was 81% and 67%, respectively. In per-protocol analysis (N=34), 5-year OS and EFS was 82% and 79%, respectively. HCT-ASCT associated related mortality was not observed. Conclusions Sequential high-dose MTX containing chemotherapy followed by high-dose carmustine/thiotepa plus ASCT (±whole brain irradiation) is safe and leads to high survival rates in eligible patients with newly diagnosed PCNS
Untersuchungen an Polymerbeschichtungen auf Surface-Acoustic-Wave-Sensoren zur Detektion organischer Loesungsmitteldaempfe
Nuclear pore assembly proceeds by an inside-out extrusion of the nuclear envelope
The nuclear pore complex (NPC) mediates nucleocytoplasmic transport through the
nuclear envelope. How the NPC assembles into this double membrane boundary has remained
enigmatic. Here, we captured temporally staged assembly intermediates by correlating live cell
imaging with high-resolution electron tomography and super-resolution microscopy. Intermediates
were dome-shaped evaginations of the inner nuclear membrane (INM), that grew in diameter and
depth until they fused with the flat outer nuclear membrane. Live and super-resolved fluorescence
microscopy revealed the molecular maturation of the intermediates, which initially contained the
nuclear and cytoplasmic ring component Nup107, and only later the cytoplasmic filament
component Nup358. EM particle averaging showed that the evagination base was surrounded by
an 8-fold rotationally symmetric ring structure from the beginning and that a growing mushroomshaped
density was continuously associated with the deforming membrane. Quantitative structural
analysis revealed that interphase NPC assembly proceeds by an asymmetric inside-out extrusion of
the INM
Strippingvoltammetrische Bestimmung von Technetiumspuren mit Hilfe einer TOPO-beschichteten Glaskohlenstoffelektrode
Imaging Molecular Structure through Femtosecond Photoelectron Diffraction on Aligned and Oriented Gas-Phase Molecules
This paper gives an account of our progress towards performing femtosecond
time-resolved photoelectron diffraction on gas-phase molecules in a pump-probe
setup combining optical lasers and an X-ray Free-Electron Laser. We present
results of two experiments aimed at measuring photoelectron angular
distributions of laser-aligned 1-ethynyl-4-fluorobenzene (C8H5F) and
dissociating, laseraligned 1,4-dibromobenzene (C6H4Br2) molecules and discuss
them in the larger context of photoelectron diffraction on gas-phase molecules.
We also show how the strong nanosecond laser pulse used for adiabatically
laser-aligning the molecules influences the measured electron and ion spectra
and angular distributions, and discuss how this may affect the outcome of
future time-resolved photoelectron diffraction experiments.Comment: 24 pages, 10 figures, Faraday Discussions 17
Primary central nervous system lymphomas:EHA–ESMO Clinical Practice Guideline for diagnosis, treatment and follow-up<sup>☆</sup>
Primary central nervous system lymphomas:EHA–ESMO Clinical Practice Guideline for diagnosis, treatment and follow-up<sup>☆</sup>
Coulomb explosion imaging of small organic molecules at LCLS.
Fragmentation of small organic molecules by intense few-femtosecond X-ray free-electron laser pulses has been studied using Coulomb explosion imaging. By measuring kinetic energies and emission angles of the ionic fragments in coincidence, we disentangle different fragmentation pathways, for certain cases can reconstruct molecular geometry at the moment of explosion, and show how it depends on LCLS pulse duration
X-ray–optical cross-correlator for gas-phase experiments at the Linac Coherent Light Source free-electron laser
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