Recent in Biology (page 20 of 21)

P. Acnes Found to Cause Infections Other Than Acne

Peter Lambert, PhD, a professor of microbiology at Aston University's school of life and health sciences, has reported that Propionibacterium acnes (P. acnes), the bacterium that causes acne, may already be present within the body and cause other infections.

Research Suggests Triclosan Exposure May Increase Allergies

A study conducted by the University of Michigan's School of Public Health suggests that individuals exposed to triclosan in personal care products may suffer from increased allergies.

Researchers Investigate Photocontact Allergy in Sunscreens

Researchers at the University of Gothenburg and Chalmers University of Technology have investigated what happens when sun care products break down in the presence of UV radiation to better understand photocontact allergy with this process.

New Findings Regarding Mechanism of Contact Nickel Allergy

Recent work published in Nature Immunology shows new findings regarding contact nickel allergy. Research from the University Hospital Mannheim and University of Heidelberg, in Germany, suggests the human Toll-like receptor 4 is crucial in the development of this skin reaction.

Capsaicin in Pain Relief Creams as a Co-carcinogen?

Researchers from the Hormel Institute at the University of Minnesota have found that capsaicin formulated in pain relief creams may promote skin cancer.

Variations in Pigmentation and Ultrastructural Skin Differences Among Ethnic Groups

As formulators create products for varying ethnic backgrounds and with diverse skin types, an understanding of differences in pigmentation and skin structure and function becomes more important. This column reviews recent studies on the structural, genetic and ultraviolet (UV)-responsive differences in skin pigmentation to allow the formulator to create successful products for varying ethnicities and to accurately measure pigmentation.

Enhancing Sunscreen Efficacy for Realistic Application

The ability of a sunscreen to protect the skin from erythema is expressed on product labels as the sunburn protection factor (SPF)—i.e., the ratio of the minimum erythema dose (MED) with sunscreen to the MED without protection. Yet in reality, consumers do not apply the same mass/cm2 as is utilized in SPF testing, so maximal protection is not achieved.

Center for Skin Sciences Established, Reports New Findings in Skin Tanning

Twenty five years after a fire claimed many lives, the Center for Skin Sciences at the University of Bradford (Bradford, UK), specializing in wound healing, was officially established to honor those who died. The occasion was marked by a symposium. In addition, the group recently announced new findings in relation to sunburn-prone skin and the potential for tanning.

Researchers Identify Physiological Sensor Important for Skin Barrier Function

Researchers at the National Institute for Physiological Sciences (NIPS) have reported that the transient receptor potential vanilloid 4 (TRPV4) ion channel in keratinocytes is important to maintain skin barrier function and prevent skin dehydation. According to these researchers, chemicals that modulate TRPV4 activity, could affect barrier repair of damaged skin.

Research Reveals Multiple Conformations of Collagen

Collin Stultz, Massachusetts Institute of Technology (MIT) associate professor, cardiologist and biomedical engineer, recently examined how collagen breaks down in his work published online in the journal Biochemistry. His research suggests that collagen has multiple conformations, both rigid and flexible, that depend upon temperature.

Small, Smaller and Nano Materials: An Invisible Benefit

Although nanomaterials have been used in cosmetics for some time, consumers believe they may constitute a health risk due to their possible penetration into the skin. The present article evaluates the benefits as well as the skin penetration of nanoparticles used in cosmetics.

Unexpected Lessons in Dermatotoxicology: De minimis Magnesium++

Traditional dermatotoxicologic investigations focus on dermatitis as well as potential systemic effects1 but rarely have they focused on trace ions. The following lesson opens new avenues of thought and investigation for intimate care product developers, since the trace ions described may dramatically impact the end product.

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