Melanins and melanosomes from llama (Lama glama L.)

Analysis of melanins and melanosomes in eight hair and skin samples taken of adult pigmented Argentine llamas (Lama glama L.) has been carried out. In each sample, eumelanins, pheomelanins and alkali-soluble melanins were identified. The total amount of melanins and the amount of eumelanins both dec...

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Detalles Bibliográficos
Autores principales: Cecchi, Teresa, Cozzali, Claudia, Passamonti, Paolo, Ceccarelli, Piero, Pucciarelli, Filippo, Gargiulo, Anna Maria, Frank, Eduardo Narciso, Renieri, Carlo
Formato: Artículo
Lenguaje:Español
Publicado: 2004
Materias:
SF Cultura de los animales
Acceso en línea:http://pa.bibdigital.ucc.edu.ar/3979/1/A_Moore_Wiencke_Bates_Zheng_Rey_Smith.pdf
Aporte de:
Producción Académica Universidad Católica de Córdoba (UCCor) de Universidad Católica de Córdoba
id I38-R144-3979
record_format dspace
spelling I38-R144-39792025-04-08T22:08:53Z http://pa.bibdigital.ucc.edu.ar/3979/ Melanins and melanosomes from llama (Lama glama L.) Cecchi, Teresa Cozzali, Claudia Passamonti, Paolo Ceccarelli, Piero Pucciarelli, Filippo Gargiulo, Anna Maria Frank, Eduardo Narciso Renieri, Carlo SF Cultura de los animales Analysis of melanins and melanosomes in eight hair and skin samples taken of adult pigmented Argentine llamas (Lama glama L.) has been carried out. In each sample, eumelanins, pheomelanins and alkali-soluble melanins were identified. The total amount of melanins and the amount of eumelanins both decreased from black to reddish brown colour, while pheomelanins were found to be present in small quantities in each sample. Eumelanosomes were round and oval-shaped, displaying transverse striations clearly visible at low magnification. Dark brown samples revealed all four melanosomes stages. Stages I and II melanosomes appeared as large, asymmetrical vacuoles containing numerous microvesicles randomly scattered within an amorphous proteinaceous material (vesiculo-globular bodies). Stage III melanosomes had microgranular melanin deposits in the microvesicles and in the matrix. The fully melanized melanosomes (stage IV) were primarily round-shaped, showing an irregular outline and the electron-dense pigment was arranged to form large clusters. In light brown melanocytes, numerous melanosomes at different maturation stages could be found. Premelanosomes appeared ovoid, containing amorphous proteinaceous material and spotty and microgranular deposits. Mature melanosomes were fully melanized, homogeneously electrondense, ovoid granules. 2004-06-30 info:eu-repo/semantics/article info:eu-repo/semantics/closedAccess application/pdf spa http://pa.bibdigital.ucc.edu.ar/3979/1/A_Moore_Wiencke_Bates_Zheng_Rey_Smith.pdf Cecchi, Teresa ORCID: https://orcid.org/0000-0003-1940-864X <https://orcid.org/0000-0003-1940-864X>, Cozzali, Claudia, Passamonti, Paolo ORCID: https://orcid.org/0000-0001-7293-8477 <https://orcid.org/0000-0001-7293-8477>, Ceccarelli, Piero ORCID: https://orcid.org/0000-0002-6756-2767 <https://orcid.org/0000-0002-6756-2767>, Pucciarelli, Filippo, Gargiulo, Anna Maria, Frank, Eduardo Narciso ORCID: https://orcid.org/0000-0001-7860-3563 <https://orcid.org/0000-0001-7860-3563> and Renieri, Carlo ORCID: https://orcid.org/0000-0003-4816-228X <https://orcid.org/0000-0003-4816-228X> (2004) Melanins and melanosomes from llama (Lama glama L.). Pigment Cell Research, 17 (3). pp. 307-311. ISSN 0893-5785 info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1600-0749.2004.00139.x
institution Universidad Católica de Córdoba
institution_str I-38
repository_str R-144
collection Producción Académica Universidad Católica de Córdoba (UCCor)
language Español
orig_language_str_mv spa
topic SF Cultura de los animales
spellingShingle SF Cultura de los animales
Cecchi, Teresa
Cozzali, Claudia
Passamonti, Paolo
Ceccarelli, Piero
Pucciarelli, Filippo
Gargiulo, Anna Maria
Frank, Eduardo Narciso
Renieri, Carlo
Melanins and melanosomes from llama (Lama glama L.)
topic_facet SF Cultura de los animales
description Analysis of melanins and melanosomes in eight hair and skin samples taken of adult pigmented Argentine llamas (Lama glama L.) has been carried out. In each sample, eumelanins, pheomelanins and alkali-soluble melanins were identified. The total amount of melanins and the amount of eumelanins both decreased from black to reddish brown colour, while pheomelanins were found to be present in small quantities in each sample. Eumelanosomes were round and oval-shaped, displaying transverse striations clearly visible at low magnification. Dark brown samples revealed all four melanosomes stages. Stages I and II melanosomes appeared as large, asymmetrical vacuoles containing numerous microvesicles randomly scattered within an amorphous proteinaceous material (vesiculo-globular bodies). Stage III melanosomes had microgranular melanin deposits in the microvesicles and in the matrix. The fully melanized melanosomes (stage IV) were primarily round-shaped, showing an irregular outline and the electron-dense pigment was arranged to form large clusters. In light brown melanocytes, numerous melanosomes at different maturation stages could be found. Premelanosomes appeared ovoid, containing amorphous proteinaceous material and spotty and microgranular deposits. Mature melanosomes were fully melanized, homogeneously electrondense, ovoid granules.
format Artículo
author Cecchi, Teresa
Cozzali, Claudia
Passamonti, Paolo
Ceccarelli, Piero
Pucciarelli, Filippo
Gargiulo, Anna Maria
Frank, Eduardo Narciso
Renieri, Carlo
author_facet Cecchi, Teresa
Cozzali, Claudia
Passamonti, Paolo
Ceccarelli, Piero
Pucciarelli, Filippo
Gargiulo, Anna Maria
Frank, Eduardo Narciso
Renieri, Carlo
author_sort Cecchi, Teresa
title Melanins and melanosomes from llama (Lama glama L.)
title_short Melanins and melanosomes from llama (Lama glama L.)
title_full Melanins and melanosomes from llama (Lama glama L.)
title_fullStr Melanins and melanosomes from llama (Lama glama L.)
title_full_unstemmed Melanins and melanosomes from llama (Lama glama L.)
title_sort melanins and melanosomes from llama (lama glama l.)
publishDate 2004
url http://pa.bibdigital.ucc.edu.ar/3979/1/A_Moore_Wiencke_Bates_Zheng_Rey_Smith.pdf
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