Results 21 to 30 of about 68,864 (257)

Visible Light Induces Melanogenesis in Human Skin through a Photoadaptive Response. [PDF]

PLoS ONE, 2015
Visible light (400-700 nm) lies outside of the spectral range of what photobiologists define as deleterious radiation and as a result few studies have studied the effects of visible light range of wavelengths on skin.
Manpreet Randhawa, InSeok Seo, Frank Liebel, Michael D Southall, Nikiforos Kollias, Eduardo Ruvolo   +5 more
doaj   +1 more source

Pigmented Deposits in the Skin

The American Journal of Dermatopathology, 2018
Abstract: Pigmented deposits can occur in the skin due to many and varied causes. Some of them are systemic conditions accompanied by involvement of internal organs. Others have serious prognostic implications, and early diagnosis can help in the correct and adequate management of the diseases.
Fernandez-Flores A, Bermudez C, Molina I, Saus C, Monteagudo C, Cassarino D   +5 more
openaire   +4 more sources

The accuracy of pulse oximetry in measuring oxygen saturation by levels of skin pigmentation: a systematic review and meta-analysis

BMC Medicine, 2022
Background During the COVID-19 pandemic, there have been concerns regarding potential bias in pulse oximetry measurements for people with high levels of skin pigmentation.
Chunhu Shi, Mark Goodall, Jo Dumville, James Hill, Gill Norman, Oliver Hamer, Andrew Clegg, Caroline Leigh Watkins, George Georgiou, Alexander Hodkinson, Catherine Elizabeth Lightbody, Paul Dark, Nicky Cullum   +12 more
doaj   +1 more source

Gingival Pigmentation and Its Association with Skin Complexion and Periodontal Status Among Patients Attending a Tertiary Hospital in Nigeria: A Cross-Sectional Study

Nigerian Dental Journal
Introduction: Gingival color varies among different races and can be affected by a number of factors including pigmentation. Gingival pigmentation is of aesthetic concern in some individuals and has been linked to skin complexion.
Grace Alade, Ayodele Ogundana
doaj   +1 more source

Genomic ancestry, self-reported "color" and quantitative measures of skin pigmentation in Brazilian admixed siblings. [PDF]

PLoS ONE, 2011
A current concern in genetic epidemiology studies in admixed populations is that population stratification can lead to spurious results. The Brazilian census classifies individuals according to self-reported "color", but several studies have demonstrated
Tailce K M Leite, Rômulo M C Fonseca, Nanci M de França, Esteban J Parra, Rinaldo W Pereira   +4 more
doaj   +1 more source

Vitamin D and Pigmented Skin [PDF]

Nutrients, 2022
The default supply of vitamin D3 to humans is its endogenous production in UV-B-exposed skin [...]
openaire   +2 more sources

Developmental and Epileptic Encephalopathy due to Biallelic Pathogenic Variants in PIGM

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective PIGM encodes a critical enzyme in the glycosylphosphatidylinositol (GPI)‐anchor biosynthesis pathway. While promoter‐region mutations in PIGM have been associated with a relatively mild phenotype characterized by portal vein thrombosis and absence seizures, recent evidence suggests that coding‐region mutations result in a more severe
Júlia Sala‐Coromina, Anna Marcé‐Grau, Barbara Masotto, Marta Codina, Lamia BenJemaa, Yasmina Elaribi, Mónica Martinez‐Gallo, Roger Colobran, Angel Sanchez‐Montañez, Irene Valenzuela, Yoshiko Murakami, Alfons Macaya   +11 more
wiley   +1 more source

Correlation of Facial Skin Colour and Melanin Pigmentation in the Gingiva of Children in Primary, Mixed and Permanent Dentition: An Observational Study

Advances in Human Biology
Introduction: Physiologic oral pigmentation is a typical finding in paediatric dentistry. Gingival pigmentation has a wide range of occurrence rates depending on race, country and the influence of genetics.
Pooja Vishwanath Bane, Anshula N Deshpande, Bhavna H Dave, Seema S Bargale, K S Poonacha, Pratik B Kariya   +5 more
doaj   +1 more source

Skin hyperpigmentation in Indian population: Insights and best practice

Indian Journal of Dermatology, 2016
Skin pigmentation is one of the most strikingly variable phenotypes in humans, therefore making cutaneous pigmentation disorders frequent symptoms manifesting in a multitude of forms.
Stephanie Nouveau, Divya Agrawal, Malavika Kohli, Francoise Bernerd, Namita Misra, Chitra Shivanand Nayak   +5 more
doaj   +1 more source

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

Advanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou, Bokeon Kwak, Dario Floreano, Esther Amstad   +3 more
wiley   +1 more source