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Ionic Crosslinking of Linear Polyethyleneimine Hydrogels with Tripolyphosphate.
Gels
December 2024
Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Ciencias Químicas, Ciudad Autónoma de Buenos Aires 1113, Argentina.
In this work, the mechanical properties of hydrogels based on linear polyethyleneimine (PEI) chemically crosslinked with ethyleneglycoldiglycidyl ether (EGDE) were improved by the ionic crosslinking with sodium tripolyphosphate (TPP). To this end, the quaternization of the nitrogen atoms present in the PEI structure was conducted to render a network with a permanent positive charge to interact with the negative charges of TPP. The co-crosslinking process was studied by H high-resolution magic angle spinning (H HRMAS) NMR and X-ray photoelectron spectroscopy (XPS) in combination with organic elemental analysis and inductively coupled plasma mass spectrometry (ICP-MS).
View Article and Find Full Text PDFSyphilitic Hepatitis: An Uncommon Manifestation of Secondary Syphilis.
Cureus
November 2024
Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA) Health, Los Angeles, USA.
Syphilitic hepatitis is a rare manifestation of a sexually transmitted infection. Given its nonspecific presentation, it is important for clinicians to consider the diagnosis in sexually active patients presenting with elevated liver tests. In this case, a 30-year-old man presented with an itchy rash and was diagnosed with an allergic reaction.
View Article and Find Full Text PDFRational design and synthesis of novel phenyltriazole derivatives targeting MRSA cell wall biosynthesis.
RSC Adv
December 2024
Pharmaceutical Chemistry Department, Faculty of Pharmacy, Al-Azhar University Nasr City 11884 Cairo Egypt
Antimicrobial resistance in methicillin-resistant (MRSA) is a major global health challenge. This study reports the design and synthesis of novel phenyltriazole derivatives as potential anti-MRSA agents. The new scaffold replaces the thiazole core with a 1,2,3-triazole ring, enhancing antimicrobial efficacy and physicochemical properties.
View Article and Find Full Text PDFDiffuse Maculopapular Rash: An Uncommon Cutaneous Presentation of Secondary Syphilis.
Cureus
November 2024
Department of Dermatology, Cleveland Clinic Florida, Weston, USA.
Syphilis is a sexually acquired disease that can affect multiple organ systems. Secondary syphilis can cause a wide range of skin manifestations, leading to misdiagnoses. Herein, we present a patient who developed a diffuse maculopapular rash concerning for a drug reaction leading to a dermatology consult.
View Article and Find Full Text PDFA modelling framework to characterize the impact of antibiotics on the gut microbiota diversity.
Gut Microbes
December 2025
Université Paris Cité, IAME, INSERM, Paris, France.
Metagenomic sequencing deepened our knowledge about the role of the intestinal microbiota in human health, and several studies with various methodologies explored its dynamics during antibiotic treatments. We compared the impact of four widely used antibiotics on the gut bacterial diversity. We used plasma and fecal samples collected during and after treatment from healthy volunteers assigned to a 5-day treatment either by ceftriaxone (1 g every 24 h through IV route), ceftazidime/avibactam (2 g/500 mg every 8 h through IV route), piperacillin/tazobactam (1 g/500 mg every 8 h through IV route) or moxifloxacin (400 mg every 24 h through oral route).
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