Publications by authors named "Juergen Maier"

Article Synopsis
  • Reactive astrocytes play a significant role in glioblastoma, but their specific functions and interactions in the tumor environment remain unclear.
  • Gene analysis indicates that reactive astrocytes from glioblastoma tumors show increased levels of a cytokine called CHI3L1, which is linked to inflammation and tissue changes.
  • Research using co-culture models shows that these reactive astrocytes drive glioblastoma cells to adopt a more aggressive phenotype, enhancing signaling pathways like MAPK and AKT, suggesting new avenues for targeted treatments.
View Article and Find Full Text PDF

Objectives: Improved fixation techniques with optional use of bone cements for implant augmentation have been developed to enhance stability and reduce complication rates after osteosynthesis of femoral neck fractures. This biomechanical study aimed to evaluate the effect of cement augmentation on implant anchorage and overall performance of screw-anchor fixation systems in unstable femoral neck fractures.

Methods: Ten pairs of human cadaveric femora were used to create standardized femoral neck fractures (Pauwels type 3 fractures; AO/OTA 31-B2) with comminution and were fixed by means of a rotationally stable screw-anchor (RoSA) system.

View Article and Find Full Text PDF

Photochromic molecules that are covalently linked to a strong fluorophore combine the requirements of external control and strong fluorescence, which will become increasingly important for super-resolution microscopy techniques based on single molecules. However, given the bulky structure of such constructs, steric hindrance might affect their photoconversion efficiencies upon immobilising them for imaging purposes. In this study the efficiencies of the photochromic conversion processes of molecular triads that are embedded in a polymer have been studied as a function of temperature.

View Article and Find Full Text PDF

This paper explores causes, explanations and consequences of the negative image of psychiatry and develops recommendations for improvement. It is primarily based on a WPA guidance paper on how to combat the stigmatization of psychiatry and psychiatrists and a Medline search on related publications since 2010. Furthermore, focussing on potential causes and explanations, the authors performed a selective literature search regarding additional image-related issues such as mental health literacy and diagnostic and treatment issues.

View Article and Find Full Text PDF

Part 1 of this paper discussed several more general aspects of Diagnostic and Statistical Manual of Mental Disorders (DSM-5) and offered a detailed, paradigmatic analysis of changes made to the chapter on depressive disorders. This second part focusses on several other disorders, including bipolar and schizophrenia spectrum disorders. The respective changes and their possible consequences are discussed under consideration of traditional psychiatric classification, particularly from the perspective of European traditions and on the basis of a PubMed search and review papers.

View Article and Find Full Text PDF

DSM-5 was published in 2013 after about 10 years of preparation. Part 1 of this paper discusses several more general aspects of DSM-5 and offers a detailed, paradigmatic analysis of changes made to the chapter on depressive disorders. The background for the changes is analysed on the basis of a PubMed search and review papers on the classification of mental disorders in general and on empirical knowledge about individual disorders.

View Article and Find Full Text PDF

The growth, structure formation and thermal disordering of (sub-)monolayer films of 1-butyl-1-methylpyrrolidinium-bis(trifluoromethylsulfonyl)imide [BMP][TFSA] grown under ultrahigh vacuum (UHV) conditions on Au(111) have been investigated using scanning tunneling microscopy (STM) and angle resolved X-ray photoelectron spectroscopy (ARXPS) under UHV conditions at temperatures between 100 and 298 K. At room temperature, two-dimensional film growth occurs up to one monolayer coverage, with both cations and anions in direct contact with the gold substrate, as shown by ARXPS, and STM images reveal a 2D liquid state of the adlayer. At lower temperatures, motion is frozen and a disordered 2D glass state as well as a 2D crystalline phase with long-range order are formed.

View Article and Find Full Text PDF

Aim: To evaluate the relation between pressure ulcers and delivery of care.

Background: No decrease of pressure ulcer rates could be recognised in acute hospital care, despite intensive efforts in prevention. Furthermore, reports show increasing rates.

View Article and Find Full Text PDF

Objective: Major depressive disorder is associated with increased cardiac mortality. A decrease in vagal modulation related to reduced heart rate variability might contribute to increased mortality among many other factors. We sought to examine the hypothesis that nortriptyline treatment will be associated with a decrease in heart rate variability and coupling between heart rate and respiration compared to treatment with S-citalopram.

View Article and Find Full Text PDF

Background: Samples for plant metabolic fingerprinting are prepared generally by metabolism quenching, grinding of plant material and extraction of metabolites in solvents. Further concentration and derivatisation steps follow in dependence of the sample nature and the available analytical platform. For plant material sampled in the field, several methods are not applicable, such as, e.

View Article and Find Full Text PDF

Psychopharmacotherapy should now be regulated in the sense of evidence-based medicine, as is the case in other areas of clinical treatment in medicine. In general this is a meaningful development, which principally will have a positive impact on routine health care in psychiatry. But several related problems should not be ignored.

View Article and Find Full Text PDF

The new allele MICA*055 contains eight GCT repeats within the exon 5 MICA-TM microsatellite polymorphism.

View Article and Find Full Text PDF

Patients with first-episode schizophrenia appear to respond to lower doses of neuroleptics, and to be more sensitive to developing extrapyramidal side-effects. The authors therefore compared in such patients the efficacy and extrapyramidal tolerability of comparatively low dosages of the atypical neuroleptic risperidone and of the conventional neuroleptic haloperidol. Risperidone was hypothesized to have better extrapyramidal tolerability and efficacy in treating negative symptoms.

View Article and Find Full Text PDF

Objective: To examine the effectiveness of aripiprazole in schizophrenia in a naturalistic setting in 14 European countries.

Methods: This multicentre, open-label study of aripiprazole evaluated outpatients with schizophrenia for whom a medication switch was clinically reasonable or antipsychotic initiation was required. Patients (n = 833) were randomized in a 4:1 ratio to aripiprazole (recommended starting dose 15 mg/day, permitted adjustment 10-30 mg/day) (n = 680) or another antipsychotic (safety control [SC] group) (n = 153) for 8 weeks.

View Article and Find Full Text PDF

Psychopharmacotherapy should now be regulated in the sense of evidence based medicine, as is the case in other areas of therapeutic medicine. In general, this is a meaningful development which will have a positive impact on routine health care. However, related problems should not be ignored.

View Article and Find Full Text PDF

Two major 14-3-3 proteins of the unicellular green alga Chlamydomonas reinhardtii were purified and partially sequenced. The obtained data show that the 30-kDa isoform predominant in the cytosol is encoded by a previously cloned and sequenced 14-3-3 cDNA whereas the 27-kDa isoform represents a new 14-3-3 protein which is largely associated with the endoplasmic reticulum (ER). Therefore, the corresponding cDNA was cloned and sequenced.

View Article and Find Full Text PDF