Diffuse Reflectance Spectroscopy Versus Mexameter® MX18 Measurements of Melanin and Erythema in an African Population
Melanin provides protection against excess exposure to solar ultraviolet radiation (UVR) and related adverse health effects. Diffuse reflectance spectroscopy (DRS) can be used to calculate cutaneous melanin and erythema, but this is complex and has been mostly used for light‐to‐medium pigmented skin...
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| Veröffentlicht in: | Photochemistry and photobiology 2016-07, Vol.92 (4), p.632-636 |
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| creator | Wright, Caradee Y. Karsten, Aletta E. Wilkes, Marcus Singh, Ann du Plessis, Johan Albers, Patricia N. Karsten, Petrus A. |
| description | Melanin provides protection against excess exposure to solar ultraviolet radiation (UVR) and related adverse health effects. Diffuse reflectance spectroscopy (DRS) can be used to calculate cutaneous melanin and erythema, but this is complex and has been mostly used for light‐to‐medium pigmented skin. Handheld reflectance spectrophotometers, such as the Mexameter® MX18, can also be used. We compared DRS‐calculated melanin and erythema values with Mexameter melanin and erythema index values to understand how these techniques/measurements correlate in an African population of predominantly deeply pigmented skin. Five hundred and three participants comprised 68.5% self‐identified Black African, 9.9% Indian/Asian, 18.4% White and 2.9% Colored. The majority of Black African (45%), Indian/Asian (34%) and Colored (53%) participants self‐identified their skin as being “brown.” Measured melanin levels increased with darker self‐reported skin color. DRS‐calculated and Mexameter melanin values demonstrated a positive correlation (Spearman rho = 0.87, P |
| doi_str_mv | 10.1111/php.12607 |
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Melanin provides protection against excess sun exposure. Diffuse Reflectance Spectroscopy (DRS) is used to calculate melanin and erythema, but has mostly been used for light‐to‐medium pigmented skin. We compared DRS‐calculated melanin and erythema values with a handheld reflectance Mexameter melanin and erythema values to understand how these techniques/measurements correlate among Africans with predominantly deeply pigmented skin. DRS‐calculated and Mexameter melanin values demonstrated a positive correlation. Both instruments' results showed that erythema values were strongly correlated with their own melanin values. Further work is needed to understand melanin, erythema and color in Black skin, given sun‐related health risks posing vulnerable groups in Africa.</description><identifier>ISSN: 0031-8655</identifier><identifier>EISSN: 1751-1097</identifier><identifier>DOI: 10.1111/php.12607</identifier><identifier>PMID: 27276188</identifier><identifier>CODEN: PHCBAP</identifier><language>eng</language><publisher>United States: Blackwell Publishing Ltd</publisher><subject>Adolescent ; Adult ; African Continental Ancestry Group ; Aged ; Asian Continental Ancestry Group ; Colorimetry ; Erythema - pathology ; European Continental Ancestry Group ; Female ; Humans ; Male ; Melanins - metabolism ; Middle Aged ; Photochemistry ; Pigments, Biological - physiology ; Reproducibility of Results ; Sensitivity and Specificity ; Skin ; Skin Pigmentation ; Spectrum analysis ; Spectrum Analysis - methods ; Ultraviolet radiation ; Young Adult</subject><ispartof>Photochemistry and photobiology, 2016-07, Vol.92 (4), p.632-636</ispartof><rights>2016 The American Society of Photobiology</rights><rights>2016 The American Society of Photobiology.</rights><rights>2016 American Society for Photobiology</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4267-545105dd37bfd20b98118d8fe445ad1a8174bbcdf747a51003baa05f6e049fb43</citedby><cites>FETCH-LOGICAL-c4267-545105dd37bfd20b98118d8fe445ad1a8174bbcdf747a51003baa05f6e049fb43</cites><orcidid>0000-0001-9608-818X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fphp.12607$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fphp.12607$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,778,782,1414,27907,27908,45557,45558</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27276188$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wright, Caradee Y.</creatorcontrib><creatorcontrib>Karsten, Aletta E.</creatorcontrib><creatorcontrib>Wilkes, Marcus</creatorcontrib><creatorcontrib>Singh, Ann</creatorcontrib><creatorcontrib>du Plessis, Johan</creatorcontrib><creatorcontrib>Albers, Patricia N.</creatorcontrib><creatorcontrib>Karsten, Petrus A.</creatorcontrib><title>Diffuse Reflectance Spectroscopy Versus Mexameter® MX18 Measurements of Melanin and Erythema in an African Population</title><title>Photochemistry and photobiology</title><addtitle>Photochem Photobiol</addtitle><description>Melanin provides protection against excess exposure to solar ultraviolet radiation (UVR) and related adverse health effects. Diffuse reflectance spectroscopy (DRS) can be used to calculate cutaneous melanin and erythema, but this is complex and has been mostly used for light‐to‐medium pigmented skin. Handheld reflectance spectrophotometers, such as the Mexameter® MX18, can also be used. We compared DRS‐calculated melanin and erythema values with Mexameter melanin and erythema index values to understand how these techniques/measurements correlate in an African population of predominantly deeply pigmented skin. Five hundred and three participants comprised 68.5% self‐identified Black African, 9.9% Indian/Asian, 18.4% White and 2.9% Colored. The majority of Black African (45%), Indian/Asian (34%) and Colored (53%) participants self‐identified their skin as being “brown.” Measured melanin levels increased with darker self‐reported skin color. DRS‐calculated and Mexameter melanin values demonstrated a positive correlation (Spearman rho = 0.87, P < 0.001). The results from both instruments showed erythema values were strongly correlated with their own melanin values. This finding is considered spurious and may result from the complexity of separating brown and red pigment when using narrowband reflectance techniques. Further work is needed to understand melanin, erythema and color in Black skin given sun‐related health risks in vulnerable groups in Africa.
Melanin provides protection against excess sun exposure. Diffuse Reflectance Spectroscopy (DRS) is used to calculate melanin and erythema, but has mostly been used for light‐to‐medium pigmented skin. We compared DRS‐calculated melanin and erythema values with a handheld reflectance Mexameter melanin and erythema values to understand how these techniques/measurements correlate among Africans with predominantly deeply pigmented skin. DRS‐calculated and Mexameter melanin values demonstrated a positive correlation. Both instruments' results showed that erythema values were strongly correlated with their own melanin values. Further work is needed to understand melanin, erythema and color in Black skin, given sun‐related health risks posing vulnerable groups in Africa.</description><subject>Adolescent</subject><subject>Adult</subject><subject>African Continental Ancestry Group</subject><subject>Aged</subject><subject>Asian Continental Ancestry Group</subject><subject>Colorimetry</subject><subject>Erythema - pathology</subject><subject>European Continental Ancestry Group</subject><subject>Female</subject><subject>Humans</subject><subject>Male</subject><subject>Melanins - metabolism</subject><subject>Middle Aged</subject><subject>Photochemistry</subject><subject>Pigments, Biological - physiology</subject><subject>Reproducibility of Results</subject><subject>Sensitivity and Specificity</subject><subject>Skin</subject><subject>Skin Pigmentation</subject><subject>Spectrum analysis</subject><subject>Spectrum Analysis - methods</subject><subject>Ultraviolet radiation</subject><subject>Young Adult</subject><issn>0031-8655</issn><issn>1751-1097</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kc1u1TAQhS0EoreFBS-ALLGhi7SexI6dZXUpLaiFKy4_3VlOMlZT8oedQO9L8RA8GdPetgskvBnP6DtHozOMvQBxAPQOx8vxANJc6EdsAVpBAqLQj9lCiAwSkyu1w3ZjvBICZKHhKdtJdapzMGbBfr5pvJ8j8k_oW6wm11fI1yP9whCrYdzwrxjiHPk5XrsOJwx_fvPzCzA0cHEO2GE_RT546lvXNz13fc2Pw2a6xM7x254f-dBUVFfDOLduaob-GXviXRvx-V3dY1_eHn9eniZnH0_eLY_OkkqmuU6UVCBUXWe69HUqysIAmNp4lFK5GpwBLcuyqr2W2hEqstI5oXyOQha-lNkee731HcPwY8Y42a6JFba0Kg5ztGAERUFqTeirf9CrYQ49bXdD5YryUgVR-1uqonxiQG_H0HQubCwIe3MMS8ewt8cg9uWd41x2WD-Q9-kTcLgFfjUtbv7vZFenq3vLZKto4oTXDwoXvttcZ1rZbx9OLCwv1rBevreQ_QXwEaM4</recordid><startdate>201607</startdate><enddate>201607</enddate><creator>Wright, Caradee Y.</creator><creator>Karsten, Aletta E.</creator><creator>Wilkes, Marcus</creator><creator>Singh, Ann</creator><creator>du Plessis, Johan</creator><creator>Albers, Patricia N.</creator><creator>Karsten, Petrus A.</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>4T-</scope><scope>7TM</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>K9.</scope><scope>NAPCQ</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0001-9608-818X</orcidid></search><sort><creationdate>201607</creationdate><title>Diffuse Reflectance Spectroscopy Versus Mexameter® MX18 Measurements of Melanin and Erythema in an African Population</title><author>Wright, Caradee Y. ; Karsten, Aletta E. ; Wilkes, Marcus ; Singh, Ann ; du Plessis, Johan ; Albers, Patricia N. ; Karsten, Petrus A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4267-545105dd37bfd20b98118d8fe445ad1a8174bbcdf747a51003baa05f6e049fb43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Adolescent</topic><topic>Adult</topic><topic>African Continental Ancestry Group</topic><topic>Aged</topic><topic>Asian Continental Ancestry Group</topic><topic>Colorimetry</topic><topic>Erythema - pathology</topic><topic>European Continental Ancestry Group</topic><topic>Female</topic><topic>Humans</topic><topic>Male</topic><topic>Melanins - metabolism</topic><topic>Middle Aged</topic><topic>Photochemistry</topic><topic>Pigments, Biological - physiology</topic><topic>Reproducibility of Results</topic><topic>Sensitivity and Specificity</topic><topic>Skin</topic><topic>Skin Pigmentation</topic><topic>Spectrum analysis</topic><topic>Spectrum Analysis - methods</topic><topic>Ultraviolet radiation</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wright, Caradee Y.</creatorcontrib><creatorcontrib>Karsten, Aletta E.</creatorcontrib><creatorcontrib>Wilkes, Marcus</creatorcontrib><creatorcontrib>Singh, Ann</creatorcontrib><creatorcontrib>du Plessis, Johan</creatorcontrib><creatorcontrib>Albers, Patricia N.</creatorcontrib><creatorcontrib>Karsten, Petrus A.</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Docstoc</collection><collection>Nucleic Acids Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Premium</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Photochemistry and photobiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wright, Caradee Y.</au><au>Karsten, Aletta E.</au><au>Wilkes, Marcus</au><au>Singh, Ann</au><au>du Plessis, Johan</au><au>Albers, Patricia N.</au><au>Karsten, Petrus A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Diffuse Reflectance Spectroscopy Versus Mexameter® MX18 Measurements of Melanin and Erythema in an African Population</atitle><jtitle>Photochemistry and photobiology</jtitle><addtitle>Photochem Photobiol</addtitle><date>2016-07</date><risdate>2016</risdate><volume>92</volume><issue>4</issue><spage>632</spage><epage>636</epage><pages>632-636</pages><issn>0031-8655</issn><eissn>1751-1097</eissn><coden>PHCBAP</coden><abstract>Melanin provides protection against excess exposure to solar ultraviolet radiation (UVR) and related adverse health effects. Diffuse reflectance spectroscopy (DRS) can be used to calculate cutaneous melanin and erythema, but this is complex and has been mostly used for light‐to‐medium pigmented skin. Handheld reflectance spectrophotometers, such as the Mexameter® MX18, can also be used. We compared DRS‐calculated melanin and erythema values with Mexameter melanin and erythema index values to understand how these techniques/measurements correlate in an African population of predominantly deeply pigmented skin. Five hundred and three participants comprised 68.5% self‐identified Black African, 9.9% Indian/Asian, 18.4% White and 2.9% Colored. The majority of Black African (45%), Indian/Asian (34%) and Colored (53%) participants self‐identified their skin as being “brown.” Measured melanin levels increased with darker self‐reported skin color. DRS‐calculated and Mexameter melanin values demonstrated a positive correlation (Spearman rho = 0.87, P < 0.001). The results from both instruments showed erythema values were strongly correlated with their own melanin values. This finding is considered spurious and may result from the complexity of separating brown and red pigment when using narrowband reflectance techniques. Further work is needed to understand melanin, erythema and color in Black skin given sun‐related health risks in vulnerable groups in Africa.
Melanin provides protection against excess sun exposure. Diffuse Reflectance Spectroscopy (DRS) is used to calculate melanin and erythema, but has mostly been used for light‐to‐medium pigmented skin. We compared DRS‐calculated melanin and erythema values with a handheld reflectance Mexameter melanin and erythema values to understand how these techniques/measurements correlate among Africans with predominantly deeply pigmented skin. DRS‐calculated and Mexameter melanin values demonstrated a positive correlation. Both instruments' results showed that erythema values were strongly correlated with their own melanin values. Further work is needed to understand melanin, erythema and color in Black skin, given sun‐related health risks posing vulnerable groups in Africa.</abstract><cop>United States</cop><pub>Blackwell Publishing Ltd</pub><pmid>27276188</pmid><doi>10.1111/php.12607</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0001-9608-818X</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Adolescent Adult African Continental Ancestry Group Aged Asian Continental Ancestry Group Colorimetry Erythema - pathology European Continental Ancestry Group Female Humans Male Melanins - metabolism Middle Aged Photochemistry Pigments, Biological - physiology Reproducibility of Results Sensitivity and Specificity Skin Skin Pigmentation Spectrum analysis Spectrum Analysis - methods Ultraviolet radiation Young Adult |
| title | Diffuse Reflectance Spectroscopy Versus Mexameter® MX18 Measurements of Melanin and Erythema in an African Population |
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