Validation of a satellite-based solar UV-A radiation dosimeter for mobile healthcare applications

Morelli, Marco; Michelozzi, B.; Simeone, Emilio; Khazova, Marina

doi:10.1016/j.jastp.2020.105529

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…Moreover, another interesting possible use of Sun-4Health® technology could be to determine the effect of sun behaviour on blood pressure, potentially providing personalised recommendations for cardiovascular health, as already preliminarily investigated by siHealth with the UK Health Security Agency (formerly Public Health England) [23].…”

Section: Discussionmentioning

confidence: 99%

“…co. uk) that monitors spectral solar radiation in near real-time and with high accuracy by using Earth Observation satellite imagery without any ground sensor. HappySun® has been scientifically validated, in different spectral bands and for different applications, in collaboration with the UK Health Security Agency (formerly Public Health England) and the UK National Health Service (NHS) [22][23][24]. During the study, the app incorporated the spectral properties of the sunscreens described below, but it can incorporate the properties of any sunscreen.…”

Section: Appsmentioning

confidence: 99%

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Innovative digital solution supporting sun protection and vitamin D synthesis by using satellite-based monitoring of solar radiation

Young

Schalka

Temple

et al. 2022

Photochem Photobiol Sci

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Public health campaigns advise minimising UV radiation (UVR) exposure to prevent skin cancer and precancer, e.g. actinic keratosis (AK). A 3-day clinical field study, in Brazil, was performed to evaluate the mobile app Sun4Health® by siHealth Ltd. The app performs real-time monitoring of both erythemal and vitamin D-effective solar radiation doses using satellite data, enabling personalised recommendations on optimal sun exposure time and sunscreen use. When coupled to a wearable device, the app also provides body-site specific recommendations ("3D" version). 59 healthy volunteers were randomised into 3 groups, each given a different app providing: (1) ultraviolet index only (control app), (2) personalised recommendations and sun overexposure alerts (Sun4Health® app), (3) as ( 2) but connected via Bluetooth to a wearable device to monitor sun exposure in 3D (Sun4Health®-3D app). Participants were offered sunscreens (SPF 30 and 50) to use at their discretion. Erythema, quantified by reflectance spectroscopy, was assessed daily in the mornings and evenings on six body sites. Serum vitamin D (25(OH)D 3 ) was measured before and after the study. Mean increase of erythema (Mexameter® units ± SD) of all exposed body sites combined over 3 days showed 55.76 ± 47.47 for group 1, 40.27 ± 37.91 for group 2 and 37.12 ± 30.69 for group 3 (p < 0.05 for all groups). Mean increase of serum 25(OH)D 3 (nmol/l ± SD) showed 1.32 ± 36.49 for group 1, 6.38 ± 21.19 for group 2 and 18.68 ± 35.45 for group 3 (p > 0.05 for all groups). The results show that the Sun4Health® app is safe to use and can modify behaviour to reduce skin erythema (sunburn) yet not decreasing vitamin D status.

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Section: Discussionmentioning

confidence: 99%

Section: Appsmentioning

confidence: 99%

Innovative digital solution supporting sun protection and vitamin D synthesis by using satellite-based monitoring of solar radiation

Young

Schalka

Temple

et al. 2022

Photochem Photobiol Sci

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Ambient ultraviolet radiation as a cardioprotective factor: A global and regional analysis

You

2024

Health Science Reports

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BackgroundAmbient ultraviolet radiation (UVR) has been found to have a greater cardioprotective effect than previously believed. This study aimed to quantitatively measure the role of UVR in protecting against the progression of cardiovascular disease (CVD) in general on a global and regional scale.MethodsPopulation‐level data on UVR, CVD incidence, aging, economic affluence, CVD genetic background (indexed with the Biological State Index, Ibs), obesity prevalence, and urbanization were collected and analysed. The correlation between UVR and CVD was examined using bivariate correlations, partial correlation, and stepwise multiple linear regression. Countries were grouped to investigate regional correlations between UVR and CVD, and Fisher's r‐to‐z transformation was used to compare correlation coefficients.ResultsUVR showed a significant inverse correlation with CVD incidence rates in bivariate correlation analyses globally (r = − 0.775 and r = − 0.760, p < 0.001), as well as within high‐income (r = −0.704, p < 0.001) and low‐ and middle‐income countries (LMIC) (r = −0.851, p < 0.001). These correlations remained significant even after controlling for confounding variables (r = −0.689 to −0.812, p < 0.001). In stepwise regression models, UVR was found to be the most significant predictor of CVD incidence. The inverse correlation between UVR and CVD was stronger in LMICs compared to high‐income countries (z = −1.96, p < 0.050).ConclusionsLow ambient UVR may be a significant risk factor for the progression of CVD worldwide. The protective effect of UVR appears to be stronger in LMICs than in high‐income countries, suggesting a greater impact of UVR on CVD prevention in these regions. These findings emphasize the need for further research into the mechanisms underlying the cardioprotective effects of UVR and the development of public health strategies to mitigate CVD risk associated with low UVR exposure.

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A satellite-based, near real-time, street-level resolution air pollutants monitoring system using machine learning for personalised skin health applications

Temple,

May,

Linden

et al. 2024

Air Qual Atmos Health

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Validation of a satellite-based solar UV-A radiation dosimeter for mobile healthcare applications

Cited by 6 publications

References 24 publications

Innovative digital solution supporting sun protection and vitamin D synthesis by using satellite-based monitoring of solar radiation

Innovative digital solution supporting sun protection and vitamin D synthesis by using satellite-based monitoring of solar radiation

Ambient ultraviolet radiation as a cardioprotective factor: A global and regional analysis

A satellite-based, near real-time, street-level resolution air pollutants monitoring system using machine learning for personalised skin health applications

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