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PATHOLOGY OF THE DERMATITIS CAUSED BY MEGALOPYGE OPERCULARIS, A TEXAN CATERPILLAR

1. The dermatitis caused by contact with the larva of Megalopyge opercularis is produced by a poison introduced by the hollow, specialized setæ of its cuticular tubercles. It is not produced by the ornamental hairs, or by the tissue juices of the animal. 2. The poison appears to be of the nature of...

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Detalles Bibliográficos
Autor principal: Foot, Nathan Chandler
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1922
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2128124/
https://www.ncbi.nlm.nih.gov/pubmed/19868643
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author Foot, Nathan Chandler
author_facet Foot, Nathan Chandler
author_sort Foot, Nathan Chandler
collection PubMed
description 1. The dermatitis caused by contact with the larva of Megalopyge opercularis is produced by a poison introduced by the hollow, specialized setæ of its cuticular tubercles. It is not produced by the ornamental hairs, or by the tissue juices of the animal. 2. The poison appears to be of the nature of a venom, combined with protein vehicles, and may be itself a protein. 3. It is rendered inert by boiling, or by heating to 55°C. for a considerable period of time. 4. It is apparently stored in sacs at the base of the setæ, but whether secreted there, or by hypodermal glands, remains to be determined. 5. It diminishes in virulence after the larva has spun its cocoon, and is no longer active after the caterpillar is dead. 6. The poisonous spines cause localized necrosis of the human epidermis, followed by the formation of small vesicles. The cellular reaction to the poison is chiefly lymphocytic.
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spelling pubmed-21281242008-04-18 PATHOLOGY OF THE DERMATITIS CAUSED BY MEGALOPYGE OPERCULARIS, A TEXAN CATERPILLAR Foot, Nathan Chandler J Exp Med Article 1. The dermatitis caused by contact with the larva of Megalopyge opercularis is produced by a poison introduced by the hollow, specialized setæ of its cuticular tubercles. It is not produced by the ornamental hairs, or by the tissue juices of the animal. 2. The poison appears to be of the nature of a venom, combined with protein vehicles, and may be itself a protein. 3. It is rendered inert by boiling, or by heating to 55°C. for a considerable period of time. 4. It is apparently stored in sacs at the base of the setæ, but whether secreted there, or by hypodermal glands, remains to be determined. 5. It diminishes in virulence after the larva has spun its cocoon, and is no longer active after the caterpillar is dead. 6. The poisonous spines cause localized necrosis of the human epidermis, followed by the formation of small vesicles. The cellular reaction to the poison is chiefly lymphocytic. The Rockefeller University Press 1922-04-30 /pmc/articles/PMC2128124/ /pubmed/19868643 Text en Copyright © Copyright, 1922, by The Rockefeller Institute for Medical Research New York This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).
spellingShingle Article
Foot, Nathan Chandler
PATHOLOGY OF THE DERMATITIS CAUSED BY MEGALOPYGE OPERCULARIS, A TEXAN CATERPILLAR
title PATHOLOGY OF THE DERMATITIS CAUSED BY MEGALOPYGE OPERCULARIS, A TEXAN CATERPILLAR
title_full PATHOLOGY OF THE DERMATITIS CAUSED BY MEGALOPYGE OPERCULARIS, A TEXAN CATERPILLAR
title_fullStr PATHOLOGY OF THE DERMATITIS CAUSED BY MEGALOPYGE OPERCULARIS, A TEXAN CATERPILLAR
title_full_unstemmed PATHOLOGY OF THE DERMATITIS CAUSED BY MEGALOPYGE OPERCULARIS, A TEXAN CATERPILLAR
title_short PATHOLOGY OF THE DERMATITIS CAUSED BY MEGALOPYGE OPERCULARIS, A TEXAN CATERPILLAR
title_sort pathology of the dermatitis caused by megalopyge opercularis, a texan caterpillar
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2128124/
https://www.ncbi.nlm.nih.gov/pubmed/19868643
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