‘Vitamin D’ biodosimeter: basic characteristics and potential applications

Galkin, Oleg; Terenetskaya, I. P.

doi:10.1016/s1011-1344(99)00115-3

Cited by 70 publications

(68 citation statements)

References 24 publications

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“…Being extension of our previous studies on the reaction medium effect on provitamin D photochemistry [7][8][9][10], this work is also directed on elaboration of new UV sensitive materials, in particular, as UV biosensors for direct monitoring of the vitamin D synthetic capacity of solar/artificial UV radiation [11,12].…”

Section: Introductionmentioning

confidence: 99%

Provitamin D Doped Silica and Polymeric Films: New Materials for UV Biosensor

Orlova¹,

Terenetskaya²,

Eremenko³

et al. 2010

MSA

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Section: Introductionmentioning

confidence: 99%

Provitamin D Doped Silica and Polymeric Films: New Materials for UV Biosensor

Orlova¹,

Terenetskaya²,

Eremenko³

et al. 2010

MSA

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“…The validity of spectral analysis and the mathematical model was confirmed by simultaneous UV measurements using a spectroradiometer within the framework of the EC BIODOS Project [10].…”

Section: Methodsmentioning

confidence: 89%

“…Additionally, the photoreaction kinetics was calculated using the spectral data of the BBH4 lamp at the input of the mathematical model which is the system of differential equations defining time-dependences of the photoisomers concentrations [10]. The same experiment was performed for a 25cm distance between the lamp and the cuvette to increase UV doses without requiring excessively long exposures (Fig.…”

Section: Verification Of the Reciprocity Lawmentioning

confidence: 99%

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Metrology of the vitamin-D-synthetic activity of UV lamps

Terenetskaya

Orlova

2017

18th International Congress of Metrology

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Abstract. Ultraviolet lamps are widely used in phototherapy, and positive health effect of UV irradiation is associated with the synthesis of vitamin D in human skin. Nevertheless, to avoid harmful effects of UV radiation a variety of commonly used broadband UV detectors have an output in erythema units. Therefore the measurement of the vitamin-D-synthetic capacity is a missing link in the metrology of UV lamps that are used for medical and/or cosmetic purposes. This paper presents original UV measuring device based on the same photoreaction in vitro by which vitamin D is synthesized in human skin via photo-and thermo-induced conversions of 7-Dehydrocholesterol (provitamin D 3 ). Thus the targets for UV photons are provitamin D molecules embedded in specially designed UV transparent and stable matrix mimicking biological samples. Three operation modes of varying complexity are developed to follow the photoreaction course in real time.

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“…Determination of radiation exposure under natural conditions is otherwise almost impossible, as the plankton moves up and down in the water column. Galkin & Terenetskaya (1999) have discussed the use of provitamin D3 in vitro for dosimetry, and Webb et al (1988) have compared provitamin D3 conversion in vitro with that in skin under different daylight conditions.…”

Section: Occurence Of Provitamins D and Formation Of Vitamins D In Algaementioning

confidence: 99%

Is provitamin D a UV-B receptor in plants?

Björn

Wang

2001

Plant Ecology

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An hypothesis is presented that provitamin D (dehydrocholesterol and/or ergosterol) can act as a UV-B receptor in plants and algae. We also propose that the proportions between provitamins D, previtamins D, and vitamins D (D2 and D3), after calibration, can be used to evaluate UV-B exposure of phytoplankton and terrestrial vegetation.Key words: Dehydrocholesterol, Ergosterol, Photoreceptor, Provitamin D, Ultraviolet, UV-B, Vitamin D IntroductionThere is an enormous literature on the medical aspects of vitamin D (see Feldman et al. 1997;Holick 1999). The present contribution presents a possible function of the provitamin/previtamin/vitamin D system in algae, plants and fungi, namely as an ultraviolet-B photoreceptor system. Our discussion is based mostly on literature data published by other workers. We will also discuss some own findings in a general way, while details will be published elsewhere. We shall start by introducing vitamin D and related compounds and their formation in various organisms.

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‘Vitamin D’ biodosimeter: basic characteristics and potential applications

Cited by 70 publications

References 24 publications

Provitamin D Doped Silica and Polymeric Films: New Materials for UV Biosensor

Provitamin D Doped Silica and Polymeric Films: New Materials for UV Biosensor

Metrology of the vitamin-D-synthetic activity of UV lamps

Is provitamin D a UV-B receptor in plants?

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