Publications by authors named "Andreas Blomgren"

A case of massive overdose of sustained release bupropion tablets is described. The patient presented with GCS 3, tachycardic and in vasoplegic shock. ECHO and EKG were initially normal.

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Article Synopsis
  • - USP's peptide reference standards are usually assessed using HPLC assays against a purity standard determined by a mass balance method.
  • - A collaborative study by the USP Biologics Department compared three quantitation methods (HPLC, qNMR, and AAA) for measuring oxytocin levels to evaluate inter-laboratory consistency.
  • - Results showed HPLC had the least variability, but qNMR, being simpler and quicker, is suggested for more in-depth exploration as a primary method for peptide standard value assignment.
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The increased interest in using monoclonal antibodies (mAbs) as a platform for biopharmaceuticals has led to the need for new analytical techniques that can precisely assess physicochemical properties of these large and very complex drugs for the purpose of correctly identifying quality attributes (QA). One QA, higher order structure (HOS), is unique to biopharmaceuticals and essential for establishing consistency in biopharmaceutical manufacturing, detecting process-related variations from manufacturing changes and establishing comparability between biologic products. To address this measurement challenge, two-dimensional nuclear magnetic resonance spectroscopy (2D-NMR) methods were introduced that allow for the precise atomic-level comparison of the HOS between two proteins, including mAbs.

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The cholinergic system is involved in neurodegenerative diseases, and visualization of cholinergic innervations with positron emission tomography (PET) would be a useful tool in understanding these diseases. A ligand for the vesicular acetylcholine transporter (VAChT), acknowledged as a marker for cholinergic neurons, could serve as such a PET tracer. The aim was to find a VAChT PET tracer using a library concept to create a small but diverse library of labeled compounds.

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