Isolation and biological characterization of neurotoxic compounds from the sea anemone Lebrunia danae (Duchassaing and Michelotti, 1860) View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2006-02-11

AUTHORS

J. Sánchez-Rodríguez, Karina Cruz-Vazquez

ABSTRACT

This paper describes two neurotoxic proteins obtained from the Caribbean sea anemone Lebrunia danae. To assess the neurotoxic activity of the venom of L. danae, several bioassays were carried out, and to evaluate the effect of the toxin, Median Lethal Doses (LD50) were determined in vivo using sea crabs (Ocypode quadrata) and Artemia salina nauplii with the crude extract of the proportion of 2.82 mg/m. The proteins with neurotoxic effects were isolated using low-pressure liquid chromatography. The fractions containing the neurotoxic activity were analyzed by SDS-PAGE and showed protein bands with an apparent molecular weight of 62.50 kDa (LdNt1) and 58 kDa (LdNt2). To demonstrate that these proteins were indeed responsible for the neurotoxic activity observed, we injected a small fraction of the purified protein into the third walking leg of a crab and observed the typical convulsions, paralysis and death provoked by neurotoxins. Hemolytic activity was also tested for 0.238 mg of crude extract; the hemolytic value was 39.5, 49.6 and 50.1% for cow, sheep and pig erythrocytes, respectively. More... »

PAGES

436-441

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00204-006-0059-3

DOI

http://dx.doi.org/10.1007/s00204-006-0059-3

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1017019336

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/16474963


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