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Investigation of the suitability of confocal Raman spectroscopy for the demonstration of bioequivalence of topical products.
Int J Pharm
January 2025
University of Tuebingen, Pharmaceutical Technology, Auf Der Morgenstelle 8 72076 Tuebingen, Germany. Electronic address:
Bioequivalence studies of topical formulations have attracted increased interest as the European Medicines Agencies "Guideline on quality and equivalence on locally applied, locally acting cutaneous products" describes them in the context of the approval of generics. Since the guideline only proposes tape stripping as a destructive method for bioequivalence testing in in vitro skin penetration, the aim of this study was to investigate the suitability of confocal Raman spectroscopy (CRS) as a non-destructive alternative. To validate the CRS results, tape stripping and CRS experiments using ketoprofen as a model API were performed consecutively on the same samples of ex vivo porcine skin after frozen storage and compared.
View Article and Find Full Text PDFKlebsiella pneumoniae-derived extracellular vesicles impair endothelial function by inhibiting SIRT1.
Cell Commun Signal
January 2025
Beijing An Zhen Hospital, Capital Medical University, The Key Laboratory of Remodeling Cardiovascular Diseases, Ministry of Education; Collaborative Innovation Center for Cardiovascular Disorders, Beijing Institute of Heart Lung and Blood Vessel Disease, Beijing, 100029, China.
Background: The potential role of Klebsiella pneumoniae (K.pn) in hypertension development has been emphasized, although the specific mechanisms have not been well understood. Bacterial extracellular vesicles (BEVs) released by Gram-negative bacteria modulate host cell functions by delivering bacterial components to host cells.
View Article and Find Full Text PDFLignans from Schisandra chinensis (Turcz.) Baill ameliorates cognitive impairment in Alzheimer's disease and alleviates ferroptosis by activating the Nrf2/FPN1 signaling pathway and regulating iron levels.
J Ethnopharmacol
January 2025
Heilongjiang University of Chinese Medicine, Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education Heilongjiang Touyan Innovation Team Program, Harbin, 150040, People's Republic of China. Electronic address:
Ethnopharmacological Relevance: Schisandra chinensis (Turcz.) Baill (S. chinensis), first recorded in Shennong's Classic of the Materia Medica, is described as a "top grade medicine".
View Article and Find Full Text PDFBenign or Malignant? Ex Vivo Confocal Laser Scanning Microscopy for Bedside Histological Assessment of Melanocytic Lesions.
Cancers (Basel)
January 2025
Department of Dermatology and Allergy, LMU University Hospital, LMU Munich, 80337 Munich, Germany.
Objective: Ex vivo confocal laser scanning microscopy (EVCM) is an emerging imaging technique, which offers rapid tissue examination. While the current literature shows promising results in the evaluation of non-melanoma skin cancer, only limited research exists on the application of EVCM in melanocytic lesions. This study aimed to assess the utility of EVCM in the characterization of melanocytic lesions and compare its findings with gold-standard histopathology.
View Article and Find Full Text PDFM3-DPPE Liposomal Nanoparticles Encapsulating CLEC12A Enhance CD206-Mediated Endocytosis and Efficacy in the Collagen-Induced Arthritis Model.
ACS Appl Bio Mater
January 2025
Department of Joint Surgery, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China.
Objective: This study aimed to investigate the efficacy of M3-DPPE liposomal nanoparticles encapsulated with mRNA encoding cytokines (M3-mRNAs) in targeting macrophages for the treatment of inflammation-induced joint injury.
Methods: , M3-mRNAs were administered to peritoneal exudate macrophages (PEMs), and the uptake was assessed using flow cytometry. The mechanism of uptake was investigated by blocking the CLEC12A pathway with M3-SiCLEC12A and observing CD206-mediated endocytosis.
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