Skin colour, skin redness and melanin biometric measurements: comparison study between Antera® 3D, Mexameter® and Colorimeter®

Matias, Ana Rita; Феррейра, Марта; Costa, Paulo; Neto, Patrícia

doi:10.1111/srt.12199

Cited by 134 publications

(132 citation statements)

References 15 publications

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“…This type of method is commonly used in dermato-cosmetic research, the parameters investigated, melanin content and erythema being indicators of skin barrier integrity and sensitivity after contact with different substances, drugs or vehicles (Matias et al, 2015). This technique offers quantitative measurements of skin color expressed with the help of a 3-digit output L * , a * and b * —arbitrary values, system that is recognized by the International Commission of Illumination (Commission Internationale de L'Eclairage—CIE; Alaluf et al, 2002; Tzung et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Biocompatible Colloidal Suspensions Based on Magnetic Iron Oxide Nanoparticles: Synthesis, Characterization and Toxicological Profile

et al. 2017

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The use of magnetic iron oxide nanoparticles in biomedicine has evolved intensely in the recent years due to the multiple applications of these nanomaterials, mainly in domains like cancer. The aim of the present study was: (i) to develop biocompatible colloidal suspensions based on magnetic iron oxide nanoparticles as future theranostic tools for skin pathology and (ii) to test their effects in vitro on human keratinocytes (HaCat cells) and in vivo by employing an animal model of acute dermal toxicity. Biocompatible colloidal suspensions were obtained by coating the magnetic iron oxide nanoparticles resulted during the solution combustion synthesis with a double layer of oleic acid, as innovative procedure in increasing bioavailability. The colloidal suspensions were characterized in terms of dynamic light scattering (DLS) and transmission electron microscopy (TEM). The in vitro effects of these suspensions were tested by means of Alamar blue assay and the noxious effects at skin level were measured using non-invasive methods. The in vitro results indicated a lack of toxicity on normal human cells induced by the iron oxide nanoparticles colloidal suspensions after an exposure of 24 h to different concentrations (5, 10, and 25 μg·mL−1). The dermal acute toxicity test showed that the topical applications of the colloidal suspensions on female and male SKH-1 hairless mice were not associated with significant changes in the quality of barrier skin function.

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Section: Discussionmentioning

confidence: 99%

Biocompatible Colloidal Suspensions Based on Magnetic Iron Oxide Nanoparticles: Synthesis, Characterization and Toxicological Profile

et al. 2017

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“…Their NIR device failed to register tissue saturation more often in individuals with darker skin. One of the possible ways to solve this problem is to quantify the skin colour using a promising Antera 3D device and include values of the measured colour space (L*a*b*) in the developed NIR equation model of body fat [39]. Another alternative method is to include the use of ratios of reflection at different wavelengths in the developed NIR equation model of body fat [40].…”

Section: Discussionmentioning

confidence: 99%

Near infrared spectroscopy for body fat sensing in neonates: quantitative analysis by GAMOS simulations

2017

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BackgroundUnder-nutrition in neonates is closely linked to low body fat percentage. Undernourished neonates are exposed to immediate mortality as well as unwanted health impacts in their later life including obesity and hypertension. One potential low cost approach for obtaining direct measurements of body fat is near-infrared (NIR) interactance. The aims of this study were to model the effect of varying volume fractions of melanin and water in skin over NIR spectra, and to define sensitivity of NIR reflection on changes of thickness of subcutaneous fat. GAMOS simulations were used to develop two single fat layer models and four complete skin models over a range of skin colour (only for four skin models) and hydration within a spectrum of 800–1100 nm. The thickness of the subcutaneous fat was set from 1 to 15 mm in 1 mm intervals in each model.ResultsVarying volume fractions of water in skin resulted minimal changes of NIR intensity at ranges of wavelengths from 890 to 940 nm and from 1010 to 1100 nm. Variation of the melanin volume in skin meanwhile was found to strongly influence the NIR intensity and sensitivity. The NIR sensitivities and NIR intensity over thickness of fat decreased from the Caucasian skin to African skin throughout the range of wavelengths. For the relationship between the NIR reflection and the thickness of subcutaneous fat, logarithmic relationship was obtained.ConclusionsThe minimal changes of NIR intensity values at wavelengths within the ranges from 890 to 940 nm and from 1010 to 1100 nm to variation of volume fractions of water suggests that wavelengths within those two ranges are considered for use in measurement of body fat to solve the variation of hydration in neonates. The stronger influence of skin colour on NIR shows that the melanin effect needs to be corrected by an independent measurement or by a modeling approach. The logarithmic response obtained with higher sensitivity at the lower range of thickness of fat suggests that implementation of NIRS may be suited for detecting under-nutrition and monitoring nutritional interventions for malnutrition in neonates in resource-constrained communities.Electronic supplementary materialThe online version of this article (doi:10.1186/s12938-016-0310-y) contains supplementary material, which is available to authorized users.

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“…When it comes to erythema and L * a * b *, the Antera discriminated different levels of UV exposure (89 mJ/cm 2 , 129 mJ/cm 2 and 169 mJ/cm 2 ) similar to the Colorimeter CL‐400 or the Mexameter MX‐18. Moreover, the Antera 3D parameters strongly correlated with the parameters from the 2 other probes . Recently, the Antera 3D capabilities have been compared to those from the Visia CA when it comes to the association of the measured parameters with age but also between the 2 instruments.…”

Section: Introductionmentioning

confidence: 92%

Wrinkle and roughness measurement by the Antera 3D and its application for evaluation of cosmetic products

Messaraa¹,

Metois²,

Walsh³

et al. 2018

Skin Research and Technology

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Skin colour, skin redness and melanin biometric measurements: comparison study between Antera^® 3D, Mexameter^® and Colorimeter^®

Abstract: Antera 3D(®) , such as Mexameter(®) MX-18 and Colorimeter(®) CL-400, are robust, sensitive and precise equipment for the skin colour analysis.

Cited by 134 publications

References 15 publications

Biocompatible Colloidal Suspensions Based on Magnetic Iron Oxide Nanoparticles: Synthesis, Characterization and Toxicological Profile

Biocompatible Colloidal Suspensions Based on Magnetic Iron Oxide Nanoparticles: Synthesis, Characterization and Toxicological Profile

Near infrared spectroscopy for body fat sensing in neonates: quantitative analysis by GAMOS simulations

Wrinkle and roughness measurement by the Antera 3D and its application for evaluation of cosmetic products

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