Recent in Biology (page 14 of 27)
Oct 6, 2011
A collaboration of researchers have reported that use of antibacterial soaps does not lead to antibiotic or antibacterial resistance.
Oct 5, 2011
Contact allergic dermatitis is a common, and some say pervasive public health problem. The degree to which fragrances and fragranced products contribute to this issue is investigated in a two-part overview by Howard Maibach, MD, and Jurij Hostýnek, PhD, from which the following is excerpted.
Sep 20, 2011 | Anthony J. O'Lenick Jr., Siltech LLC; and Kelly Dobos, Kao Corp.
Here, industry expert Tony O'Lenick asks Kelly Dobos to explain the difference between keratinocytes and corneocytes. Many skin care products target either keratinocytes or corneocytes; therefore, understanding their differences and the basic structure of human skin is important for formulators.
Sep 1, 2011
Researchers at Rutgers have suggested that topical caffeine may help lower the risk of UV-induced skin cancer.
Aug 31, 2011
Occlusion bears both positive and negative effects on the health and integrity of skin. In the following excerpt, Hongbo Zhai, MD, and Howard Maibach, MD, introduce a discussion of the effects of occlusion on skin.
Aug 16, 2011
Researchers at the University of Illinois have confirmed the presence of bacteria associated with early childhood caries (ECC) in infant saliva. The research, which was published in PLoS One in the article “Comparative analysis of salivary bacterial microbiome diversity in edentulous infants and their mothers or primary care givers using pyrosequencing” proposes the need for infant oral care.
Jul 13, 2011
Following is an excerpt adapted from Physiology of the Skin, Third Edition, which explores the process of keratinization.
Jun 30, 2011 | Howard I. Maibach, MD, University of California School of Medicine; Ali Alikhan, MD, Mayo Clinic; and Fatima S. Alikhan, Columbia University
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.
Jun 16, 2011
Researchers at New York University's Langone Medical Center have identified the communication pathway between hair follicles and melanocyte stem cells that regenerates pigmented hair.
Jun 1, 2011 | Zoe Diana Draelos, MD, Dermatology Consulting Services; and Peter T. Pugliese, MD
The present article, adapted from Draelos and Pugliese*, provides a review of the chemistry involved in the glycation process to assist formulators in developing topical or nutricosmetic solutions for mature skin care.
Jun 1, 2011 | Howard I. Maibach, MD, University of California School of Medicine; and Jackie Levin, MD, Largo Medical Center
This paper briefly reviews the basic science of pH and buffering capacity and the deleterious effects of increased pH in mature skin. In more detail, the authors consider which components of the stratum corneum (SC) are likely responsible for buffering capacity in skin of all ages, and discuss physiologic changes in the SC that may contribute to the decreased buffering capacity detected in mature skin.
May 26, 2011
Researchers at the University of Southern California's Keck School of Medicine have discovered that stem cells in hair follicles communicate with each other via a specific molecular activator/inhibitor pair to stimulate hair growth.