|
|
|
|
| |
|
|
| Abumandour,Mohamed M. |
| The aim of the present study was focused on and describes the gross morphological and scanning electron microscopical features of the gill of the red swamp freshwater crayfish. Our results noted that: all gills have the same general structure and appearance. The gill consists of axis with numerous finger-like filaments, having three morphological types; round, pointed and somewhat hooked shaped. There is a variation in the direction of filaments according to their position, in middle part were nearly perpendicular to gill axis while in the apex were nearly parallel to axis. There were characteristic system of gill spines on central axis, basal plate, setobranch and on the bilobed epipodal plate. There are four shape of spinated-like parts of setobranch... |
| Tipo: Journal article |
Palavras-chave: Crayfish; Filaments; Spines; Setobranch setae. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100025 |
| |
|
|
| Sciani,Juliana Mozer; Zychar,Bianca; Gonçalves,Luis Roberto; Giorgi,Renata; Nogueira,Thiago; Pimenta,Daniel Carvalho. |
| Abstract Background Sea urchins are animals commonly found on the Brazilian shoreline, being Echinometra lucunter the most abundant species. Accidents caused by E. lucunter have been reported as one of the most frequent in Brazil, and are characterized by intense pain and inflammation, consequence of spine puncture in the skin. In order to characterize such toxic effects, we isolated one molecule that caused inflammatory and nociceptive effects. Methods E. lucunter specimens were collected without gender distinction. Spines were removed and molecules were extracted, fractionated by RP-HPLC and assayed for inflammatory and nociceptive activity, in a biological-driven fractionation way, until the obtainment of one active molecule and its subsequent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Toxins; Sea urchin; Echinometra lucunter; Spines; Inflammation. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992017000100318 |
| |
|
|
| Sciani,Juliana Mozer; Antoniazzi,Marta Maria; Neves,Adriana da Costa; Pimenta,Daniel Carvalho. |
| Background Echinometra lucunter is a common American sea urchin responsible for the majority of the marine accidents in Brazil. Although not lethal, these accidents are reported to be extremely painful. Recently, our group described the presence of toxins in its spines that contribute to the pathological reactions. Additionally, we have observed that the E. lucunter spines can regenerate when broken. In the present work we evaluated the enzymatic activities of sea urchin spine extracts in order to identify an enzyme that could contribute not only to the toxicity, but also participate in the spine growth and regeneration. Results The spine aqueous extract was tested for peptidase activity, with synthetic substrates, in the presence and absence of inhibitors... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Echinometra lucunter; Spines; Cathepsin; Proteolysis. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992013000100318 |
| |
|
|
| Duarte,Tarcísio de Souza; Lessa,Gisele. |
| ABSTRACT The cuticle is the outermost of the three cellular layers of the mammalian hair. It comprises numerous keratinized scales, whose morphology, combined with other microscopic characteristics of the hair, confers characteristic signature traits to various different species. This study aimed to analyze whether the cuticular patterns of the aristiform hair had any signature implications for the two species of the genus Abrawayaomys Cunha & Cruz, 1979. We identified the cuticular profiles of A. ruschi and A. chebezi. Both species have similar hair pattern. The base of the hair shows "irregular waved" scales with smooth and continuous edges, and the apex showed "transversal waved" small-sized scales with continuous and ornamented edges. The middle... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Micromorphology; Sigmodontinae; Spines; Taxonomy; Tricology. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000400321 |
| |
|
|
|
