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Biology
New in Biology (page 27 of 29)
Dec 13, 2005 | 09:53 PM CST
Busy Signals Explain Itch from Dry Skin
By: Gil Yosipovitch, MD, and Kelly L. Barham, MD
This review of literature suggests that crosstalk between the stratum corneum and nerve fibers in the epidermis is the process by which itch is transmitted to the central nervous system. A rationale is presented for using moisturizers to reduce itch.
Dec 13, 2005 | 09:47 PM CST
Effect of Seawater Salts on Inflammatory Skin Disease
By: Ivy Lee and H.I. Maibach
Use of mineral spa water and seawater has been and continues to be a common treatment modality for inflammatory skin conditions such as psoriasis, atopic dermatitis and irritant contact dermatitis.
Dec 08, 2005 | 01:44 AM CST
Correlating Transepidermal Water Loss and Percutaneous Absorption: An Overview
By: Jackie Levin and H.I. Maibach
The extensive procedure required to measure percutaneous absorption versus transepidermal water loss (TEWL) enhances the desire to find a correlation between the 2 measurements to more easily assess skin barrier function. Experimentation investigating the correlation between TEWL and percutaneous absorption has yielded mixed findings. Yet despite the significant quantitative correlation demonstrated in some experiments, the precise qualitative relationship between percutaneous absorption and TEWL remains unsettled.
Dec 01, 2005 | 03:52 PM CST
Protecting the Genome of Skin Cells from Oxidative Stress and Photoaging
By: L. Danoux, C. Jeanmaire, V. Bardey, G. Périé, …
According to a concept proposed here, protection of nuclear DNA and mitochondrial DNA against UVB and UVA radiation can break the vicious cycle responsible for skin photoaging.
Nov 01, 2005 | 02:44 PM CST
Inside the Hair: An Advanced Hair Biology Model
By: Randy Schueller and Perry Romanowski, Alberto-…
In this survey from the literature, various writers describe a model of the inside of a hair strand, showing a multilamellar structure of the cuticle cells, a multifibril structure of the cortex, and a variety of lipids that are thought to be major contributors to the hair’s physical properties. What exactly is hair? Simply put, the answer is that hair is protein. But this simple answer does not even begin to explain the complexity and sophistication of the hair fiber.
Sep 01, 2005 | 09:51 AM CDT
Skin Friction Coefficient Values
By: Raja K. Sivamani and Gabriel Wu, Department of…
Friction is an important characteristic of skin because it allows us to execute many of our daily activities. In addition, friction studies offer insight into how skin and the skin surface change across age, gender, race, anatomical site, and chemical applications. This can provide better information about expected skin variations in the population and why certain topical applications are effective.
May 06, 2003 | 02:00 AM CDT
Topical Formulations Conforming to the Structure of the Skin
By: Vladimir Vacata, Birgit Gertchen-Ohligschlager…
Biomolecules with physical properties similar to those of the permeability barrier--including the property of forming lamellar structures--offer an alternative to the potentially harmful emulsifiers in topical formulations.
May 06, 2003 | 02:00 AM CDT
Pigmentation, Swelling and Wrinkling in the Eye Area
By: Zoe Draelos, MD, Department of Dermatology, Wa…
Product development to address concerns of pigmentation, swelling, and wrinkling in the eye area requires a basic understanding of the area's unique anatomy and skin physiology.
May 06, 2003 | 02:00 AM CDT
Cigarette Smoking and Skin Biomarkers
By: Hongbo Zhai, MD and Howard I. Maibach, MD, Uni…
Some research has been documented as to the damaging effects of smoking on the skin vasculature and on oxygenation in both human and animal models.
May 06, 2003 | 02:00 AM CDT
A Dermatologic View: Metals in Cosmetics
By: Maibach, H ;Hostynek, JJ
A dermatologic view of nickel compounds in cosmetics.