2011
DOI: 10.1590/s1678-91992011000100009
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Abstract: Abstract:Freshwater sponges are abundant in the Amazon region and they have been known to cause dermatitis (acute inflammation) since the beginning of the 20 th century. To determine whether additional constituents, besides their body spicules, cause dermatological reactions in humans, an experimental study was developed and carried out using mice and Drulia uruguayensis prepared in three different forms: intact sponges (IS), macerated sponges (MS) or isolated spicules -megascleres (ISM). The cells most common… Show more

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Cited by 5 publications
(4 citation statements)
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“…In purified spicules obtained from D. uruguayensis specimens collected in regions close to that of the present work, silicon proved to be the major component; however, the concentration of silicon was lower (18.862%) . Other work involving five species of marine sponges, also of the class Demospongiae, reports an even lower maximum concentration of silicon (13.16%) …”
Section: Resultssupporting
confidence: 51%
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“…In purified spicules obtained from D. uruguayensis specimens collected in regions close to that of the present work, silicon proved to be the major component; however, the concentration of silicon was lower (18.862%) . Other work involving five species of marine sponges, also of the class Demospongiae, reports an even lower maximum concentration of silicon (13.16%) …”
Section: Resultssupporting
confidence: 51%
“…In purified spicules obtained from D. uruguayensis specimens collected in regions close to that of the present work, silicon proved to be the major component; however, the concentration of silicon was lower (18.862%). [26] Other work involving five species of marine sponges, also of the class Demospongiae, reports an even lower maximum concentration of silicon (13.16%). [12] The other element detected in larger quantities was aluminum, with 5.77% in D. cristata and 5.36% in D. uruguayensis, in much higher concentrations than previously reported for the waters of the Tapajos River: 280 mg/l (0.28 ppm).…”
Section: Resultsmentioning
confidence: 92%
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“…Representam, no entanto, uma fauna atual composta por uma associação, de todas ou algumas, das seis espécies de esponjas (VolkmerRibeiro, 1992;Volkmer-Ribeiro & Motta, 1995), cujas espículas contribuíram para esses depósitos, em ambiente pretérito favorável a uma produção excepcional desses animais. Essas lagoas são conhecidas pelo nome popular de "lagoas da coceira", devido à irritação e mesmo reações alérgicas que, reconhecidamente as espículas depositadas no fundo ou em suspensão nas águas, causam ao penetrarem na pele (Magalhães et al, 2011).…”
Section: Corvomeyenia Thumi (Traxler 1895)unclassified