Publications by authors named "A Peppas"

Article Synopsis
  • A study aimed to identify specific genes and pathways related to the early formation of fibro-atheromas in a swine model of atherosclerosis, given the complexity of the condition's biological pathways.
  • The research used a model of Familial Hypercholesterolemia and controlled pigs, analyzing tissue samples from the infrarenal aorta after 12 months to find differential gene expression.
  • The key findings highlighted ITGB2 as a significant hub gene associated with inflammation and early disease progression, suggesting its potential as a therapeutic target.
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Atherosclerosis is a complex progressive disease involving intertwined biological mechanisms. We aimed to identify miRNA expression dynamics at the early stages of atherosclerosis using a large swine model (Wisconsin Miniature Swine, WMS). A total of 18 female pigs; 9 familial hypercholesterolemic (WMS-FH) and 9 normal control swine (WMS-N) were studied.

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The Pfitzinger condensation reaction was employed to synthesise N^N sterically demanding ligands bearing carboxylic acid anchoring groups, namely 2,2'-pyridyl-quinoline-4-carboxylic acid (), 6'-methyl-2,2'-pyridyl-quinoline-4-carboxylic acid (), 8-methyl-2,2'-pyridyl-quinoline-4-carboxylic acid () and 8,6'-dimethyl-2,2'-pyridyl-quinoline-4-carboxylic acid (). Preparation of the methyl ester analogues , and is also described. All ligands were fully characterised including the X-ray structures of , and .

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The use of amorphous microspheres as filler in composites is promising due to their light weight, low cost, incombustibility, and the ability to alter relevant properties of the final composite. Contrary to glass spheres, perlite microspheres are much cheaper and can be tailor-made to facilitate purpose-oriented alteration of the final composite. We report the use of perlite microspheres for the preparation of: (1) composites, through a compression molding (hot pressing) technique; and (2) composite filaments, in a single screw extruder, as well as their use for sample printing through Fused Deposition Modeling (FDM).

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Microfluidic lab-on-a-chip devices are changing the way that diagnostics and drug development are conducted, based on the increased precision, miniaturization and efficiency of these systems relative to prior methods. However, the full potential of microfluidics as a platform for therapeutic medical devices such as extracorporeal organ support has not been realized, in part due to limitations in the ability to scale current designs and fabrication techniques toward clinically relevant rates of blood flow. Here we report on a method for designing and fabricating microfluidic devices supporting blood flow rates per layer greater than 10 mL min for respiratory support applications, leveraging advances in precision machining to generate fully three-dimensional physiologically-based branching microchannel networks.

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