Objective(s): Nanomaterials, especially silver Nanoparticles (Ag-NPs), are employed in an increasing number of commercial products. This has led to an ever growing exposure of human beings to this substance. The first purpose of the Nano Committee of Food and Drug Administration of The Islamic Republic of Iran (IFDA) is developing guidelines to assess and approve commerci...

Oxidative stress due to excessive of reactive oxygen species (ROS) in the body is commonly associated as one underlying mechanisms ultraviolet radiation (UV)-induced damage skin. Reactive sulphur (RSS) has been implicated with potent antioxidant properties and involves modulating cellular signalling transduction pathway. In this current study, potential involvement RSS alleviating UV-induced Ha...

Cell-mediated autoimmunity has been suggested to be involved in the melanocyte apoptosis that occurs in vitiligo. We investigated the cytotoxicity to autologous melanocytes of CD8+ T cells from the perilesional margins and peripheral blood samples of vitiligo patients. CD8+ T cells isolated from skin biopsied from the edges of depigmented skin patches of vitiligo patients or from peripheral blo...

Pigment spread is the natural or experimentally procured (through grafting) progressive encroachment of pigmentation from black or red skin areas into juxtaposed white skin areas, or from black skin areas into red skin areas in spotted guinea pigs and other mammals. So far as spread from black into white skin is concerned, it had previously been shown that migration of epidermal melanocytes int...

Propionibacterium acnes is implicated in the pathogenesis of acne vulgaris, which impacts >85% of teenagers. Novel therapies are in high demand and an ethnopharmacological approach to discovering new plant sources of anti-acne therapeutics could contribute to filling this void in effective therapies. The aims of our study were two-fold: (1) To determine if species identified in ethnopharmacolog...

A novel series of 2-methyl-3-phenylquinazolin-4-one derivatives were synthesized and biologically evaluated for their cytotoxic potential against MCF-7, HepG2, PC-3 cancer cells. Most the tested compounds showed reasonable safety in normal human skin melanocyte HFB4 cell line. Compound 4 potent cytotoxicity on Hep-G2 lines, while compound 9 MCF-7 line, whereas 10 12 lines using 5-fluorouracil a...

Excessive melanin formation has been linked to various skin disorders such as hyperpigmentation and cancer. Tyrosinase is the most prominent target for inhibitors of production. In this study, we investigated whether arbutin its prodrug, undecylenic acid ester, might inhibit phenoloxidase (PO), a tyrosinase-like enzyme. Molecular docking simulation results suggested that ester can bind substrat...

BACKGROUND There are unpredictable inter-individual differences in sensitivity to psoralen-UVA (PUVA) photochemotherapy, used to treat skin diseases including psoriasis. Psoralens are metabolised by cytochrome P450 enzymes (P450), and we hypothesised that variability in cutaneous P450 expression may influence PUVA sensitivity. We previously showed that P450 CYP1B1 was abundantly expressed in hu...

Pomegranate extract (PE) and its polyphenols have been reported to show skin protective effects but their cytoprotective against methylglyoxal (MGO)-induced DNA damage cell dysfunctions are unclear. Herein, we evaluated whether PE, punicalagin (PA), ellagic acid (EA), urolithin A (UA), can alleviate MGO-induced in human keratinocytes. PE (50 µg/mL) PA µM) protected integrity reduced the formati...