Publications by authors named "Stefan Fritzsche"

Article Synopsis
  • PDE2A is an important enzyme that breaks down signaling molecules cAMP and cGMP, making it a potential target for treating neurodegenerative diseases and cancer due to its high expression in the brain and cancer cells.
  • A new derivative compound ([18F]11) has been developed as a PDE2A inhibitor and was successfully radiofluorinated for use in imaging studies, showing strong binding affinity in vitro.
  • Although in vivo PET-MR studies in rats indicated moderate brain uptake and some challenges with specificity and metabolism of the compound, [18F]11 holds promise as a tool for exploring PDE2A in brain imaging and could lead to the development of a more specific PET ligand.
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Objective: Although treatment adherence and lifestyle changes significantly improve the prognosis of cardiovascular disease, many patients do not comply with clinician recommendations. Personality functioning appears to be of importance and is hypothesized to be superior to symptom-based measures in explaining individual differences in non-adherence.

Methods: 194 cardiology inpatients (mean age = 70.

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α-Aminoxy peptides represent an interesting group of peptidomimetics with high proteolytic stability and the ability to fold into specific, predictable secondary structures. Here, we present a series of hybrid peptides consisting of α-aminoxy acids and α-amino acids with cationic and aromatic, hydrophobic side chains in an alternating manner synthesized using an efficient protocol that combines solution- and solid-phase synthesis. 2D ROESY experiments with a representative hexamer suggested the presence of a 7/8 helical conformation in solution.

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The great research interest in the quantification of reactive carbonyl compounds (RCCs), such as methylglyoxal (MGO) in biological and environmental samples, is reflected by the fact that several publications have described specific strategies to perform this task. Thus, many reagents have also been reported for the derivatization of RCCs to effectively detect and quantify the resulting compounds using sensitive techniques such as liquid chromatography coupled with mass spectrometry (LC-MS). However, the choice of the derivatization protocol is not always clear, and a comparative evaluation is not feasible because detection limits from separate reports and determined with different instruments are hardly comparable.

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Background: The revised version of the Beck Depression Inventory (BDI-II) is a broadly used instrument for assessing the severity of depression of adolescents of at least 13 years of age and adults. The self-assessment questionnaire contains 21 polytomous items and follows the criteria for a major depression specified in the DSM-IV. Clinical samples have often been used to analyze the psychometric properties of the instrument primarily with factor analytic methods.

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