Project description:Skin aging is one of the hallmarks of the aging process that causes physiological and morpho-logical 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 ag-ing process using neonatal normal human epidermal keratinocytes (NHEK-Neo). 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.
Project description:Skin aging is one of the hallmarks of the aging process that causes physiological and morpho-logical 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 interleukin-10 knockout (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.
Project description:Skin toxicity is a frequently observed side effect in the era of "molecularly targeted therapies". Skin toxicity following administration of protein kinase inhibitors such as sorafenib, regorafenib, lapatinib, sunitinib, and others can be debilitating to the patient, resulting in dose reduction and discontinuation of treatment. The mechanisms of skin toxicity induced by targeted chemotherapy, such as sorafenib or regorafenib, are poorly understood. Further research is warranted to better understand the pathophysiology of drug-related skin toxicity in this setting and develop correction strategies. This study tests the hypothesis that sorafenib and regorafenib interfere with p63 expression and keratinocyte differentiation and skin remodeling.
Eligible study participants will be evaluated clinically for evidence of skin toxicity during their visits to the outpatient Oncology clinics. Study participants will undergo skin biopsies before sorafenib or regorafenib treatment is initiated and once rash develops or 12 weeks into treatment with sorafenib or regorafenib. Skin biopsies will be performed in Oncology clinics by the study investigators and clinic support staff.
Study participants will undergo both skin biopsies regardless of whether they develop a rash. In patients who develop a rash the most representative lesion will be biopsied. A normal appearing area of skin will be biopsied in participants who do not develop a rash.
Project description:Development of epidermis includes a complicated program of keratinocyte differentiation. Here we study a new membrane LIM-domain containing Zn-finger protein ZNF185 which is expressed in upper layers of human skin and is up-regulated during keratinocyte differentiation in vitro. Interestingly, depletion of ZNF185 causes delay of keratinocyte differentiation with decreased levels of FLG, LOR, LCEs expression.