Publications by authors named "I Paspaltsis"

Prions are proteinaceous pathogens responsible for a variety of devastating diseases in mammals, including scrapie in sheep and goats, chronic wasting disease in cervids, and Creutzfeldt-Jakob disease (CJD) in humans. They are characterized by their exceptional persistence to common inactivation procedures. This applies to all possible sources of prion contamination as prions may be present in the tissues and biological fluids of infected individuals.

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Photocatalytic inactivation of pathogens in aqueous waste is gaining increasing attention. Several homogeneous and heterogeneous photocatalytic protocols exist using the Fenton's reagent and TiO, respectively. A comprehensive study of homogeneous and heterogeneous photocatalysis on a range of microorganisms will significantly establish the most efficient method.

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Background: The discovery of neural precursor cells (NPCs) and the concomitant intensive research in the field offer regenerative medicine novel approaches, enabling it to tackle conditions, such as neurodegenerative diseases. Transplantation of NPCs is nowadays considered a cutting-edge treatment for these conditions and many related clinical trials have been already completed or are still ongoing. However, little is known about the antigenicity of NPCs, with most studies addressing the question whether their antigenicity could lead to rejection of the transplanted cells.

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L-Dopa decarboxylase (DDC) catalyzes the decarboxylation of L-Dopa to dopamine and 5-hydroxytryptophan (5-HTP) to serotonin. Although DDC has been purified from a variety of peripheral organs, including the liver, kidney and pancreas, the physiological significance of the peripherally expressed enzyme is not yet fully understood. DDC has been considered as a potential novel biomarker for various types of cancer, however, the role of DDC in the development of hepatocellular carcinoma (HCC) remains to be evaluated.

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Article Synopsis
  • Prions are highly resistant to common decontamination methods, posing a public health risk especially through iatrogenic Creutzfeldt-Jakob disease (iCJD) from contaminated medical equipment.
  • Current treatments like sodium hydroxide and sodium hypochlorite often fail to completely eliminate prion infectivity, highlighting the need for more effective and user-friendly methods.
  • The study demonstrates that a photocatalytic oxidation method using the photo-Fenton reagent can effectively inactivate prions on stainless steel surfaces, making it a promising solution for decontamination in a medical context.
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