Recent in Biology (page 7 of 14)

Researchers Identify Molecule Causing Sunburn Pain

A team of researchers from Duke University, Rockefeller University and the University of California San Francisco have identified the gene that causes pain in sunburned skin.

Characterizing and Evaluating the Effectiveness of Volcanic Pumice Exfoliants

Pumice has a recognized application­­­­ as an abrasive agent to promote exfoliation of the skin. In this study, different particle size fractions of pumice sampled from several geologic occurrences in São Miguel’s island, the Azores archipelago, were used in the preparation of exfoliation formulations. Gels and soap were prepared and characterized, and their efficacy evaluated.

Stimulating Sirtuins' Antiaging Appeal

Nicotinamide, the amide of niacin or vitamin B3, is used to treat arthritis. It also has demonstrated anti-inflammatory actions that may be of benefit in patients with inflammatory acne vulgaris. Nicotinamide, therefore, would appear to play a positive role in inhibiting inflammation but a negative role in aging. Are there other ways to stimulate sirtuins?

Sirtuins: A Breakthrough in Antiaging Research

This article reviews the first scientific evidence confirming the presence of sirtuins in the skin, as well as their role in cell survival, senescence and longevity. This vital discovery could lead the way to new and innovative types of antiaging cosmetic ingredients that activate sirtuins.

Treating Spider Veins

Spider veins are popping up, literally, all over the world. This article attempts to establish possible causes for spider veins in addition to exploring their current and future treatment.

In Sight: Stimulating Stem Cells for Younger Skin

Stem cell research is a hot topic that cannot be ignored in today’s scientific realm. Its research may lead to the reversal of Parkinson’s and diabetes, to the growth of new organs, to strengthening bones and to healing damaged skin. The research of stem cells in conjunction with burn victims has led to innovation in another field—skin care.

Estée Lauder Study Shows Link Between Sleep, Skin Health

Of the results, the study's primary investigator said, "Our study is the first to conclusively demonstrate that inadequate sleep is correlated with reduced skin health and accelerates skin aging. Sleep deprived women show signs of premature skin aging and a decrease in their skin’s ability to recover after sun exposure."

The arNOX Enzyme: Implications for Intrinsic Aging

This article describes a membrane-bound enzyme found in skin whose activity increases as biological age increases. The enzyme, located on the external surface of fibroblasts and keratinocytes, generates free radicals. The present work identifies the biological mechanism of the enzyme and its relationship to the appearance of aging in skin.

Researchers Add Nanoneedle to AFM Probe for Greater Corneocyte Detail

Researchers from the University of Bath has constructed a "nanoneedle" at the end of an atomic force microscopy (AFM) probe to study the stratum corneum (SC) in detail, which may lead to better skin treatments and a greater understanding of skin aging.

Mitochondrial Nourishment and Protection for Antiaging Effects

Multiple factors affect the integrity of cell mitochondria, leading to loss of cell function, aging and apoptosis. In skin, this is expressed in the form of wrinkles, loss of tone, etc. To combat these effects, the author describes a technology that contains mitochondria-nourishing compounds to deliver antiaging benefits.

Determining the Keratolytic Activities of Benzoyl Peroxide, Retinoic Acid and Salicylic Acid In vivo

Keratolysis is the separation or loosening of the stratum corneum (SC), and is part of the natural cycle of skin renewal and regeneration. Disordered keratolysis, resulting in skin overgrowth or excessive desquamation, is responsible for various skin disorders.

Cell Signaling in Psoriasis for Ingredient Evaluation and Product Design

In this paper, the authors focus on the dialogue between skin epithelial cells and immune cells in the context of an inflammatory situation, i.e., psoriasis. The aim is to design in vitro models relevant to in vivo skin inflammation that can then be used to screen and evaluate potential cosmetic products.

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