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Updated: May 25, 2026
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The Three-Dimensional Human Skin Reconstruct Model: a Tool to Study Normal Skin and Melanoma Progression
Published on: August 3, 2011
A computational model for previtamin D(3) production in skin
Merve Meinhardt-Wollweber1, Ronald Krebs
1HOT-Hanover Center for Optical Technologies, Leibniz Universität Hannover, Nienburger Str. 17, 30167 Hannover, Germany. merve.wollweber@hot.uni-hannover.de
Summary
This study introduces a computational model to determine how much vitamin D is produced in the skin from sunlight exposure. The model analyzes factors like sunlight spectrum and skin properties to predict vitamin D production.
Area of Science:
- Biophysics
- Dermatology
- Endocrinology
Background:
- Low vitamin D levels are linked to various health problems including cancer, diabetes, and cardiovascular disease.
- Sunlight exposure is the primary source of vitamin D(3) for humans.
- The precise amount of vitamin D produced under specific exposure conditions remains unclear.
Purpose of the Study:
- To develop and present a computational model for predicting (pre-)vitamin D production in the skin.
- To analyze the influence of spectral irradiance, skin optical properties, and provitamin D concentration on vitamin D synthesis.
Main Methods:
- Development of a computational model simulating (pre-)vitamin D synthesis within the skin.
- Inclusion of parameters such as spectral irradiance, skin optical properties, and provitamin D concentration.
- Computation of results for diverse parameter sets to determine previtamin D distribution.
Main Results:
- The model provides a detailed distribution of produced previtamin D within the skin.
- Calculations were performed for various combinations of spectral irradiance, skin optical properties, and provitamin D concentrations.
- The study quantifies previtamin D production based on these input parameters.
Conclusions:
- The developed computational model offers a method to estimate skin (pre-)vitamin D production.
- Understanding these production dynamics is crucial for addressing vitamin D deficiency and related health issues.
- The model can be used to explore how different environmental and physiological factors affect vitamin D synthesis.
Related Concept Videos
01:23Role of Skin in Vitamin D Synthesis
The skin plays a crucial role in the synthesis of vitamin D, a vital nutrient for various physiological processes in the body. Vitamin D is unique because it can be synthesized in the skin through a series of chemical reactions triggered by exposure to ultraviolet B (UVB) radiation from sunlight.
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin D3(cholecalciferol).
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin D3(cholecalciferol).
01:19Pigmentation
The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...