Skin aging is one of the hallmarks of the aging process that causes physiological and morphological changes. Recently, several nutritional studies were conducted to delay or suppress the aging process. This study investigated whether nutritional supplementation of the eggshell membrane (ESM) has a beneficial effect on maintaining skin health and improving the skin aging process in vitro using neonatal normal human epidermal keratinocytes (NHEK-Neo) and in vivo using interleukin-10 knockout (IL-10 KO) mice. In NHEK-Neo cells, 1 mg/mL of enzymatically hydrolyzed ESM (eESM) upregulated the expression of keratinocyte differentiation markers, including keratin 1, filaggrin and involucrin, and changed the keratinocyte morphology. In IL-10 KO mice, oral supplementation of 8% powdered-ESM (pESM) upregulated the expression of growth factors, including transforming growth factor β1, platelet-derived growth factor-β and connective tissue growth factor, and suppressed skin thinning. Furthermore, voltage-gated calcium channel, transient receptor potential cation channel subfamily V members were upregulated by eESM treatment in NHEK-Neo cells and pESM supplementation in IL-10 KO mice. Collectively, these data suggest that ESM has an important role in improving skin health and aging, possibly via upregulating calcium signaling.
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http://dx.doi.org/10.3390/nu13072144 | DOI Listing |
Geroscience
January 2025
Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
Ageing is the primary driver of age-associated chronic diseases and conditions. Asian populations have traditionally been underrepresented in studies understanding age-related diseases. Thus, the Ageing BIOmarker Study in Singaporeans (ABIOS) aims to characterise biomarkers of ageing in Singaporeans, exploring associations between molecular, physiological, and digital biomarkers of ageing.
View Article and Find Full Text PDFJ Gastrointest Surg
January 2025
Ariadne Labs, Brigham and Women's Hospital, Harvard. T.H. School of Public Health, Boston, MA, 02115; Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114; Mongan Institute Center for Aging and Serious Illness, Massachusetts General Hospital, Boston, MA, 02114. Electronic address:
Background: Ostomy education and support is instrumental in surgical recovery and adaptation. We aimed to evaluate 1) challenges faced by fecal ostomy patients with colorectal cancer and 2) resources necessary for recovery.
Methods: We recruited patients 21-90 days after scheduled fecal ostomy surgery for locally advanced or metastatic colorectal cancer from a single, tertiary academic center.
Cureus
December 2024
Family Medicine, Rowan-Virtua School of Osteopathic Medicine, Stratford, USA.
Introduction The COVID-19 pandemic sparked an interest in skincare with the closure of spas and salons. Skincare, one of TikTok's most popular dermatology-related hashtags, received hundreds of millions of views. The American Academy of Dermatology (AAD) shared facial cleansing recommendations; however, how many people follow them is unclear.
View Article and Find Full Text PDFAging Cell
January 2025
Chemical and Biological Integrative Research Center, Biomedical Research Division, Korea Institute of Science and Technology, Seoul, Republic of Korea.
As emerging therapeutic strategies for aging and age-associated diseases, various biochemical approaches have been developed to selectively remove senescent cells, but how physical stimulus influences senescent cells and its possible application in senolytic therapy has not been reported yet. Here we developed a physical method to selectively stimulate senescent cells via low-intensity pulsed ultrasound (LIPUS) treatment. LIPUS stimulation did not affect the cell cycle, but selectively enhanced secretion of specific cytokines in senescent cells, known as the senescence-associated secretory phenotype (SASP), resulting in enhanced migration of monocytes/macrophages and upregulation of phagocytosis of senescent cells by M1 macrophage.
View Article and Find Full Text PDFMethods Mol Biol
January 2025
Tissue Microenvironment (TME) Lab, Aragón Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza, Spain.
In vitro skin aging models represent a valuable tool for the study of age-related pathologies and potential treatments. However, the currently available models do not adequately represent the complex microenvironment of the dermis since they generally focus on cutaneous cellular senescence, rather than the full range of factors that contribute to the aging process, such as structural and compositional alteration of the dermal extracellular matrix. The following protocol describes the extraction and characterization of human adult extracellular matrix scaffolds for use in in vitro aging models.
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