Publications by authors named "B Simonis"

Antibiotic resistance due to bacterial biofilm formation is a major global health concern that makes the search for new therapeutic approaches an urgent need. In this context,, -resveratrol (RSV), a polyphenolic natural substance, seems to be a good candidate for preventing and eradicating biofilm-associated infections but its mechanism of action is poorly understood. In addition, RSV suffers from low bioavailability and chemical instability in the biological media that make its encapsulation in delivery systems necessary.

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Carbon dots (CDs) are an emerging class of carbon nanoparticles, which for their characteristics have found applications in many fields such as catalysis, materials and biomedicine. Within this context, the application of CDs as antibacterial agents has received much attention in very recent years, while their use as antifungal nanoparticles has been scarcely investigated. Here we report a systematic investigation of the surface functional groups of CDs to study their influence on these nanoparticles' against Candida albicans.

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Hypothesis: The positive charge on liposome surface is known to promote the crossing of the Blood brain barrier (BBB). However, when diastereomeric cationic gemini amphiphiles are among lipid membrane components, also the stereochemistry may affect the permeability of the vesicle across the BBB.

Experiments: Liposomes featuring cationic diasteromeric gemini amphiphiles were formulated, characterized, and their interaction with cell culture models of BBB investigated.

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Article Synopsis
  • Researchers created glucosylated liposomes with a mix of DPPC, cholesterol, and a glucosyl amphiphile (GL4) to effectively deliver the antimicrobial trans-Resveratrol (RSV) to Staphylococcus epidermidis, which has glucose-recognizing proteins.
  • The team studied how the cationic charge from cholesterol derivative DC-Chol and the glucosyl moiety influence how well these liposomes interact with bacterial cells, using various methods to assess their size, charge, and RSV entrapment efficiency.
  • The findings showed that using GL4 in the formulation improved liposome stability and RSV loading, while the slime-negative strain of S. epidermidis was more affected by
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Background: Colorectal cancer (CRC) is the second most common cancer in Germany. Screening colonoscopies are considered an effective tool for early detection and prevention of CRC and are recommended in Germany for citizens over the age of 55. To increase the participation rate for screening colonoscopies, an invitation procedure was initiated in parts of Germany for patients between the ages of 55 and 75 who had never undergone a screening colonoscopy before.

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