Two methods for direct assessment of the Vitamin D synthetic capacity of sunlight and artificial UV sources

The Journal of Steroid Biochemistry and Molecular Biology
Irina Terenetskaya

Abstract

Excessive UV exposures are commonly associated with adverse health effects, but proper amounts of UV are beneficial for people and essential in the natural production of Vitamin D(3) in skin. Two methods have been developed for direct evaluation of the Vitamin D synthetic capacity of sunlight (and artificial UV sources). The first one uses an in vitro model of Vitamin D(3) synthesis (ethanol solution of 7-dehydrocholesterol, 7-DHC), and concentration of previtamin D(3) accumulated during an UV exposure is determined using specially designed spectrophotometric analysis. The second method utilizes photoisomerization of provitamin D in nematic liquid crystalline (LC) matrix, and visual estimation of accumulated previtamin D becomes possible due to special design of a LC cell. This user-friendly method is appropriate for personal UV dosimetry and may have wide application in tanning saloons, in clinical dermatology and UV therapy.

Citations

Dec 12, 2012·Archives of Osteoporosis·Farhan Javed DarAysha Habib Khan
Jun 25, 2010·Photochemistry and Photobiology·Katja VähävihuErna Snellman
Dec 1, 2010·Photochemistry and Photobiology·Alex McKinleyMichael Kimlin
Dec 10, 2014·Therapeutic Advances in Endocrinology and Metabolism·Catherine A PetersonAnthony M Belenchia
Nov 23, 2006·Photochemistry and Photobiology·Robert M Sayre, John C Dowdy

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.