A healthy immunocompetent 40-year-old man presented with spotted hyperpigmentation of the face. Skin-biopsies taken from these lesions revealed slight acanthosis of the epidermis with vacuolization within the keratinocytes in the upper malpighian layer similar to HPV-induced cytopathic viral effects. Polymerase chain reaction analysis and subsequent direct DNA sequencing could clearly demonstrate the presence of HPV 29 DNA in the hyperpigmented macules. To our knowledge, this is the first report of facial hyperpigmented lesions induced by HPV 29.
Download full-text PDF |
Source |
---|
Int J Environ Res Public Health
June 2016
Section of Geriatric Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka 814-0193, Japan.
Background: Due to moisture and the anatomical complexity of the oral mucosa, it is difficult to measure the extent of gingival melanosis in an optical manner. Therefore, we developed a new quantitative method using clinical oral photographs and compared the extent of gingival melanosis before and after smoking cessation.
Methods: A new analysis method, which we named the gingival melanosis record (GMR), is a quantitative analysis method using clinical oral photographs.
Oecologia
February 2016
Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland.
Endothermic animals vary in their physiological ability to maintain a constant body temperature. Since melanin-based coloration is related to thermoregulation and energy homeostasis, we predict that dark and pale melanic individuals adopt different behaviours to regulate their body temperature. Young animals are particularly sensitive to a decrease in ambient temperature because their physiological system is not yet mature and growth may be traded-off against thermoregulation.
View Article and Find Full Text PDFBraz J Biol
August 2014
Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria - UFSM, Prédio 17, Cidade Universitária, Santa Maria, RS, Brazil.
The occurrence of coat colour polymorphisms in populations may promote the ecological success of species by permitting a wider spectrum of use of different subsets of available resources. We conducted an analysis of temporal segregation by comparing night brightness with nocturnal activity of spotted and melanistic oncillas (Leopardus tigrinus). Melanistic oncillas were more active during bright nights and spotted oncillas and other species were more active during dark nights.
View Article and Find Full Text PDFClin Dermatol
December 2011
UMDNJ-New Jersey Medical School, Newark, NJ, USA.
J Cosmet Laser Ther
February 2010
Department of Dermatology, Taipei General Veterans Hospital, Taipei, Taiwan, Republic of China.
The development of skin hyperpigmentation in patients with end-stage renal disease (ESRD) on hemodialysis (HD) have been well documented. However, the cosmetic concern was neither valued seriously nor treated effectively in the past. We report a female case who suffered from facial hyperpigmentation (FH).
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!