Resveratrol is a phenolic compound that has been widely studied in the last years because of its extensive pharmacological properties. It also has physicochemical properties that are adequate for diffusion through the human skin. An analytical method by high performance liquid chromatography was developed and validated for its determination in transdermal emulsion, as well in receptor media and skin layers. The trans-resveratrol release kinetic followed the Higushi's model (R(2) = 0.9926) with steady-state diffusion flux and lag time of 138.5 µg cm(-2) h(-1) and 0.49 h, respectively. It showed a percentage at 64.96 % for permeation. Thus, the results suggest that the emulsion studied is a potential vehicle for transresveratrol administration by transdermal route.
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http://dx.doi.org/10.2174/1567201812666150130161736 | DOI Listing |
Commun Biol
January 2025
Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, 20892, USA.
Single cell studies have transformed our understanding of cellular heterogeneity in disease but the need for fresh starting material can be an obstacle, especially in the context of international multicenter studies and archived tissue. We developed a protocol to obtain high-quality cells and nuclei from dissected human skeletal muscle archived in the preservative Allprotect® Tissue Reagent. After fluorescent imaging microscopy confirmed intact nuclei, we performed four protocol variations that compared sequencing metrics between cells and nuclei enriched by either filtering or flow cytometry sorting.
View Article and Find Full Text PDFNat Commun
January 2025
Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada.
Spatial protein expression technologies can map cellular content and organization by simultaneously quantifying the expression of >40 proteins at subcellular resolution within intact tissue sections and cell lines. However, necessary image segmentation to single cells is challenging and error prone, easily confounding the interpretation of cellular phenotypes and cell clusters. To address these limitations, we present STARLING, a probabilistic machine learning model designed to quantify cell populations from spatial protein expression data while accounting for segmentation errors.
View Article and Find Full Text PDFBMJ Case Rep
January 2025
Department of Ophthalmology, Rochdale Infirmary, Rochdale, UK.
Sweet syndrome (SS), or acute febrile neutrophilic dermatosis, is a dermatologic, auto-inflammatory disorder of unclear origin, often accompanied by systemic inflammation affecting various tissues, including the eyes. Common ocular manifestations include conjunctivitis but can extend to other ocular tissues. Orbital apex syndrome (OAS) involves damage to several cranial nerves transversing the orbital apex, leading to ophthalmoplegia and vision loss.
View Article and Find Full Text PDFJ Eur Acad Dermatol Venereol
January 2025
Hospital for Skin Diseases, Shandong First Medical University, Shandong, China.
Geriatr Gerontol Int
January 2025
Department of Advanced Senotherapeutics and Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan.
In this review, we review the current status of biomarkers for aging and possible perspectives on anti-aging or rejuvenation from the standpoint of biomarkers. Aging is observed in all cells and organs, and we focused on research into senescence in the skin, musculoskeletal system, immune system, and cardiovascular system. Commonly used biomarkers include SA-βgal, cell-cycle markers, senescence-associated secretory phenotype (SASP) factors, damage-associated molecular patterns (DAMPs), and DNA-damage-related markers.
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