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Cytolytic and systemic toxic effects induced by the aqueous extract of the fire coral Millepora alcicornis collected in the Mexican Caribbean and detection of two types of cytolisins J. Venom. Anim. Toxins incl. Trop. Dis.
Hernández-Matehuala,Rosalina; Rojas-Molina,Alejandra; Vuelvas-Solórzano,Alma Angelica; Garcia-Arredondo,Alejandro; Ibarra Alvarado,Cesar; Olguín-López,Norma; Aguilar,Manuel.
AbstractBackground Millepora alcicornis is a branching hydrocoral common throughout the Caribbean Sea. Like other members of this genus, this species is capable of inducing skin eruptions and blisters with severe pain after contact. In the present study, we investigated the toxicity of theM. alcicornis aqueous extract on several animal models. Considering that some cnidarian hemolysins have been associated to local tissue damage, since they also induce lysis of other cell types, we also made a partial characterization of the hemolytic activity of M. alcicornis aqueous extract. This information is important for understanding the defense mechanisms of the “fire corals”.Methods The effects of pH, temperature, and some divalent cations on the hemolytic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fire coral; Millepora alcicornis; Hemolysis; Systemic toxicity; Electronic microscopy.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992015000100342
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Effects of the electrolytic treatment on Bacillus subtilis BJM
Tolentino-Bisneto,Rodolfo; Bidoia,Ederio D..
Conventional processes of water disinfection can generate toxic composites. It is the case of the trihalomethanes (carcinogenic) formed in the contact of chlorine with organic substances present in the water. The electrolytic treatment can be a substitute for the chlorination process without the need for addition of chemical substances to the process. The effect of the electrolytic treatment using carbon cathode on the viability of the microorganism Bacillus subtilis was tested to determine the death process. By means of electronic microscopy, it was observed that the main cause of the microorganism's death was the cellular lysis due to the electroporation in the cell membrane.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Disinfection; Electrolytic treatment; Electroporation; Electronic microscopy.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500016
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