|
|
|
|
| |
|
|
| Vigerelli,Hugo; Sciani,Juliana Mozer; Jared,Carlos; Antoniazzi,Marta Maria; Caporale,Graciane Maria Medeiros; Silva,Andréa de Cássia Rodrigues da; Pimenta,Daniel C. |
| Background Rabies is a fatal zoonotic neglected disease that occurs in more than 150 countries, and kills more than 55.000 people every year. It is caused by an enveloped single stranded RNA virus that affects the central nervous system, through an infection initiated by the muscular nicotinic acetylcholine receptor, according to many authors. Alkaloids, such as acetylcholine, are widespread molecules in nature. They are present in numerous biological fluids, including the skin secretion of many amphibians, in which they act (together with proteins, peptides and steroids) as protection agents against predators and/or microorganisms. Among those amphibians that are rich in alkaloids, there is the genus Rhinella.Methods Bufotenine was isolated from Rhinela... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rabies; Rhinella; Bufotenine; Alkaloids; Toxins; Mass spectrometry. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992014000200336 |
| |
|
|
| 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 |
| |
|
|
| Cunha Neto,Rene dos Santos; Vigerelli,Hugo; Jared,Carlos; Antoniazzi,Marta Maria; Chaves,Luciana Botelho; Silva,Andréa de Cássia Rodrigues da; Melo,Robson Lopes de; Sciani,Juliana Mozer; Pimenta,Daniel C.. |
| Abstract Background Rabies is an incurable neglected zoonosis with worldwide distribution characterized as a lethal progressive acute encephalitis caused by a lyssavirus. Animal venoms and secretions have long been studied as new bioactive molecular sources, presenting a wide spectrum of biological effects, including new antiviral agents. Bufotenine, for instance, is an alkaloid isolated from the skin secretion of the anuran Rhinella jimi that inhibits cellular penetration by the rabies virus. Antimicrobial peptides, such as ocellatin-P1 and ocellatin-F1, are present in the skin secretion of anurans from the genus Leptodactylus and provide chemical defense against predators and microorganisms. Methods Skin secretion from captive Leptodactylus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rabies virus; Ocellatin-F1; Bufotenine Toxin; Leptodactylus. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992015000100352 |
| |
|
|
|
