|
|
|
|
|
| Carvalho,Luciana Retz de; Pipole,Fernando; Werner,Vera Regina; Laughinghouse IV,Haywood Dail; Camargo,Antonio Carlos M. de; Rangel,Marisa; Konno,Katsuhiro; Sant' Anna,Célia Leite. |
| Reports of cyanobacterial blooms developing worldwide have considerably increased, and, in most cases, the predominant toxins are microcystins. The present study reports a cyanobacterial bloom in Lake Violão, Torres, Rio Grande do Sul State, in January 2005. Samples collected on January 13, 2005, were submitted to taxonomical, toxicological, and chemical studies. The taxonomical analysis showed many different species of cyanobacteria, and that Microcystis protocystis and Sphaerocavum cf. brasiliense were dominant. Besides these, Microcystis panniformis, Anabaena oumiana,Cylindrospermopsis raciborskii, and Anabaenopsis elenkinii f. circularis were also present. The toxicity of the bloom was confirmed through intraperitoneal tests in mice, and chemical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cyanobacteria; Blooms; Anabaenopeptins; Microcystins. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000400031 |
| |
|
|
| Mata,Élida Cleyse Gomes da; Mourão,Caroline Barbosa Farias; Rangel,Marisa; Schwartz,Elisabeth Ferroni. |
| Abstract Viruses exhibit rapid mutational capacity to trick and infect host cells, sometimes assisted through virus-coded peptides that counteract host cellular immune defense. Although a large number of compounds have been identified as inhibiting various viral infections and disease progression, it is urgent to achieve the discovery of more effective agents. Furthermore, proportionally to the great variety of diseases caused by viruses, very few viral vaccines are available, and not all are efficient. Thus, new antiviral substances obtained from natural products have been prospected, including those derived from venomous animals. Venoms are complex mixtures of hundreds of molecules, mostly peptides, that present a large array of biological activities and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antiretroviral agents; Antiviral agents; HIV; Scorpion venom; Snake venom; Amphibian venom; Insect venom; Marine animal peptides. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992017000100200 |
| |
|
|
| Kazuma,Kohei; Ando,Kenji; Nihei,Ken-ichi; Wang,Xiaoyu; Rangel,Marisa; Franzolin,Marcia Regina; Mori-Yasumoto,Kanami; Sekita,Setsuko; Kadowaki,Makoto; Satake,Motoyoshi; Konno,Katsuhiro. |
| Abstract Background: Among the hymenopteran insect venoms, those from social wasps and bees - such as honeybee, hornets and paper wasps - have been well documented. Their venoms are composed of a number of peptides and proteins and used for defending their nests and themselves from predators. In contrast, the venoms of solitary wasps and bees have not been the object of further research. In case of solitary bees, only major peptide components in a few venoms have been addressed. Therefore, the aim of the present study was to explore the peptide component profile of the venom from the solitary bee Xylocopa appendiculata circumvolans by peptidomic analysis with using LC-MS. Methods: A reverse-phase HPLC connected to ESI-OrbiTrap MS was used for LC-MS.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Peptidomic analysis; LC-ESI-MS; Solitary bee; Venom; Linear cationic α-helical peptide. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992017000100316 |
| |
|
|
|
