Keratins and lipids in ethnic hair

Detalhes bibliográficos
Autor(a) principal: Cruz, Célia F.
Data de Publicação: 2013
Outros Autores: Fernandes, Margarida M., Gomes, Andreia, Coderch, L., Martí, M., Méndez, Sandra, Gales, Luís, Azóia, Nuno G., Shimanovich, Ulyana, Paulo, Artur Cavaco
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/22666
Resumo: Human hair has an important and undeniable relevance in society due to its important role in visual appearance and social communication. Hair is mainly composed of structural proteins, mainly keratin and keratin associated proteins, and lipids. Herein, we report a comprehensive study of the content and distribution of the lipids among ethnic hair, African, Asian and Caucasian hair. More interestingly, we also report the study of the interaction between those two main components of hair, specifically the influence of the hair internal lipids in the structure of the hair keratin. This was achieved by the use of a complete set of analytical tools such as thin layer chromatography-flame ionization detector, X-ray analysis, molecular dynamics simulation and confocal microscopy. The experimental results indicated different amounts of lipids on ethnic hair compositions and higher percentage of hair internal lipids in African hair. In this type of hair, the axial diffraction of keratin was not observed in X-ray analysis, but after hair lipids removal, the keratin returned to its typical packing arrangement. In molecular dynamic simulation lipids were shown to intercalate dimers of keratin, changing its structure. From those results we assume that keratin structure may be influenced by higher concentration of lipids in African hair.
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spelling Keratins and lipids in ethnic hairEthnicityHairKeratinLipidProteinScience & TechnologyHuman hair has an important and undeniable relevance in society due to its important role in visual appearance and social communication. Hair is mainly composed of structural proteins, mainly keratin and keratin associated proteins, and lipids. Herein, we report a comprehensive study of the content and distribution of the lipids among ethnic hair, African, Asian and Caucasian hair. More interestingly, we also report the study of the interaction between those two main components of hair, specifically the influence of the hair internal lipids in the structure of the hair keratin. This was achieved by the use of a complete set of analytical tools such as thin layer chromatography-flame ionization detector, X-ray analysis, molecular dynamics simulation and confocal microscopy. The experimental results indicated different amounts of lipids on ethnic hair compositions and higher percentage of hair internal lipids in African hair. In this type of hair, the axial diffraction of keratin was not observed in X-ray analysis, but after hair lipids removal, the keratin returned to its typical packing arrangement. In molecular dynamic simulation lipids were shown to intercalate dimers of keratin, changing its structure. From those results we assume that keratin structure may be influenced by higher concentration of lipids in African hair.Margarida Fernandes held a PhD scholarship from Fundacaopara a Ciencia e Tecnologia (SFRH/BD/38 363/2007). The authors thank Vadim Volkov for the contribution with the confocal images.Wiley-BlackwellUniversidade do MinhoCruz, Célia F.Fernandes, Margarida M.Gomes, AndreiaCoderch, L.Martí, M.Méndez, SandraGales, LuísAzóia, Nuno G.Shimanovich, UlyanaPaulo, Artur Cavaco20132013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/22666eng0142-546310.1111/ics.1203523301816http://dx.doi.org/10.1111/ics.12035info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:36:34Zoai:repositorium.sdum.uminho.pt:1822/22666Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:32:41.082320Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Keratins and lipids in ethnic hair
title Keratins and lipids in ethnic hair
spellingShingle Keratins and lipids in ethnic hair
Cruz, Célia F.
Ethnicity
Hair
Keratin
Lipid
Protein
Science & Technology
title_short Keratins and lipids in ethnic hair
title_full Keratins and lipids in ethnic hair
title_fullStr Keratins and lipids in ethnic hair
title_full_unstemmed Keratins and lipids in ethnic hair
title_sort Keratins and lipids in ethnic hair
author Cruz, Célia F.
author_facet Cruz, Célia F.
Fernandes, Margarida M.
Gomes, Andreia
Coderch, L.
Martí, M.
Méndez, Sandra
Gales, Luís
Azóia, Nuno G.
Shimanovich, Ulyana
Paulo, Artur Cavaco
author_role author
author2 Fernandes, Margarida M.
Gomes, Andreia
Coderch, L.
Martí, M.
Méndez, Sandra
Gales, Luís
Azóia, Nuno G.
Shimanovich, Ulyana
Paulo, Artur Cavaco
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Cruz, Célia F.
Fernandes, Margarida M.
Gomes, Andreia
Coderch, L.
Martí, M.
Méndez, Sandra
Gales, Luís
Azóia, Nuno G.
Shimanovich, Ulyana
Paulo, Artur Cavaco
dc.subject.por.fl_str_mv Ethnicity
Hair
Keratin
Lipid
Protein
Science & Technology
topic Ethnicity
Hair
Keratin
Lipid
Protein
Science & Technology
description Human hair has an important and undeniable relevance in society due to its important role in visual appearance and social communication. Hair is mainly composed of structural proteins, mainly keratin and keratin associated proteins, and lipids. Herein, we report a comprehensive study of the content and distribution of the lipids among ethnic hair, African, Asian and Caucasian hair. More interestingly, we also report the study of the interaction between those two main components of hair, specifically the influence of the hair internal lipids in the structure of the hair keratin. This was achieved by the use of a complete set of analytical tools such as thin layer chromatography-flame ionization detector, X-ray analysis, molecular dynamics simulation and confocal microscopy. The experimental results indicated different amounts of lipids on ethnic hair compositions and higher percentage of hair internal lipids in African hair. In this type of hair, the axial diffraction of keratin was not observed in X-ray analysis, but after hair lipids removal, the keratin returned to its typical packing arrangement. In molecular dynamic simulation lipids were shown to intercalate dimers of keratin, changing its structure. From those results we assume that keratin structure may be influenced by higher concentration of lipids in African hair.
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/22666
url http://hdl.handle.net/1822/22666
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0142-5463
10.1111/ics.12035
23301816
http://dx.doi.org/10.1111/ics.12035
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eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Wiley-Blackwell
publisher.none.fl_str_mv Wiley-Blackwell
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