Related Experiment Video
Updated: Jul 6, 2026

06:08
Quantification of Hypopigmentation Activity In Vitro
Published on: March 6, 2019
Latest insights into skin hyperpigmentation.
Jean-Paul Ortonne1, Donald L Bissett
1Department of Dermatology, Hospital L'Archet, University of Nice-Sophia Antipolis, Nice, France. ortonne@unice.fr
Summary
Understanding the complex biology of melanocytes and melanogenesis aids in identifying causes of hyperpigmentation. New research tools accelerate the development of effective skin pigmentation control agents.
Area of Science:
- Dermatology and Cosmetology
- Molecular Biology
- Genetics
Background:
- Hyperpigmentary problems like melasma and solar lentigos are common, creating a need for effective treatments.
- Melanogenesis, the process of melanin production, involves numerous proteins and genetic factors.
- Current understanding of melanocyte biology offers targets for controlling skin pigmentation.
Purpose of the Study:
- To explore the potential of genomic and proteomic insights into melanocyte function for addressing hyperpigmentation.
- To highlight advancements in research methodologies for evaluating pigmentation control agents.
- To underscore the convergence of scientific understanding and technological capabilities in developing novel skincare solutions.
Main Methods:
- Leveraging genomic and proteomic data to identify key effectors in melanogenesis.
- Utilizing advanced laboratory screening methods for efficacy assessment.
- Employing sophisticated skin color measurement tools for clinical evaluation.
Main Results:
- Genomic and proteomic knowledge provides a foundation for pinpointing abnormalities causing hyperpigmentation.
- New screening and measurement tools expedite the evaluation of potential pigmentation control compounds.
- The complex interplay of factors in pigmentation is becoming increasingly understood.
Conclusions:
- Advanced understanding of the pigmentary system is crucial for developing targeted hyperpigmentation treatments.
- Technological advancements in research are paving the way for future innovations in skincare.
- The synergy between scientific knowledge and research capabilities promises effective solutions for common skin concerns.
Related Concept Videos
Changes in Skin Color: Clinical Perspectives
The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Pigmentation
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...
Skin Cancer
Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Skin Diseases and Disorders
Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Role 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).
Photoreceptors and Visual Pathways
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...

