{"id":948,"date":"2010-02-27T21:13:58","date_gmt":"2010-02-27T21:13:58","guid":{"rendered":"https:\/\/marina.swarpeca.es\/revista\/2010\/02\/27\/brasil-nuevas-propiedades-medicinales-de-veneno-de-arana-de-las-bananeras-phoneutria-nigriventer\/"},"modified":"2010-02-27T21:13:58","modified_gmt":"2010-02-27T21:13:58","slug":"brasil-nuevas-propiedades-medicinales-de-veneno-de-arana-de-las-bananeras-phoneutria-nigriventer","status":"publish","type":"post","link":"https:\/\/marina.swarpeca.es\/revista\/brasil-nuevas-propiedades-medicinales-de-veneno-de-arana-de-las-bananeras-phoneutria-nigriventer\/","title":{"rendered":"Brasil: nuevas propiedades medicinales de veneno de ara\u00f1a de las bananeras (Phoneutria nigriventer)"},"content":{"rendered":"

Fotograf\u00eda<\/strong> <\/em> Treknature<\/em><\/a> [[- The Genus Phoneutria, Perty 1833, wandering spiders<\/strong>: These spiders belong to the family Ctenidae where Phoneutria is one of around 40 genus and the only one knowned that have a venom potent enough to be a danger to humans. The genus Phoneutria can be found over large parts of South America and some parts of Central America, and 5 species are described so far after a revision of the genus in 2001.
\nPhoneutria differs from other genus in the family Ctenidae by a thick comb of hairs on the lateral edge and ventral part of the pedipalps. Phoneutria also differs from other ctenids by its unique warning display -the body and the two first legpair are kept vertical and then the spider rock from side to side horizontally. The Venon<\/strong>: The most famous species is Phoneutria fera that in popular literature been dubbed as the most venomous spider in the world. Its open for debate if that is truly the case but fact is they got a very potent neurotoxin, just as nigriventer have. Most people that are bitten by a member of this family is bitten by a nigriventer, mostly because the species appear in heavily populated areas like Sao Paolo and Rio de Janiero while P. fera are found for most part in the Amazon region where the poulation is less dense. The research on Phoneutria venom is done on nigriventer and some believe that bites that been refered as fera bites most likely are in reality misidentified nigriventer bites and envenomations (pers. corr. Rogerio Bertani, Butantan Inst<\/em>.). So how dangerous are nigriventer? Deaths have occured and during the years 1926-1996 14 fatalities happened. Nowadays there are a good working serum available in Brazil that are produced on Butantan Institute in Sao Paulo. The imidiate effects after a bite is intense local pain and swelling in the bite area, followed by serious systematic effects like irregular heart rythm, stoppage of the coagulare effects in the blood, priapism, lung edema and vomiting. One should never take a bite lightly despite the statistics that show that the risk of dying after a bite is quite small. If you are unlucky unpleasant effects and even death can be the result and one should be extra careful if serum is not regulary available. To give some idea of the potency of the venom the LD50 for nigriventer has shown to be 0.3 mg and for comparison in the same test showed 5.5 mg for black widow<\/em> <\/strong>, Latrodectus mactans<\/em>. Note that all LD50 results should be taken with a grain of salty so to speak. Conclusion<\/strong>: Phoneutria are nice and interesting spiders to keep in captivity, if you have a long experience in keeping fast and aggressive spiders. If not it is better to stay away from these genus because of the dangerous venom. They are easy to care for and demand not much except a big dose of common sence and much respect (Source: Minaxtarantulas<\/a>) Link Treknature<\/a>.]]. <\/p>\n

Otras investigaciones ya hab\u00edan identificado el potencial de sustancias del veneno de la ara\u00f1a de las bananeras (Phoneutria nigriventer) para tratar problemas cerebrales<\/a> y de erecci\u00f3n<\/a>.<\/p>\n

Seg\u00fan Gomez, los investigadores de la Santa Casa de Belo Horizonte experimentaron con \u00e9xito el uso de neurotoxinas purificadas del veneno de la ara\u00f1a como agente terap\u00e9utico para tratar el dolor, la arritmia card\u00edaca y la isquemia cerebral.<\/p>\n

\u00abLa toxina phkv, presente en el veneno de esta ara\u00f1a, inhibe las arritmias card\u00edacas atrial y ventricular<\/em>\u00ab, asegur\u00f3 el investigador en su testimonio.<\/p>\n

\u00abEl uso de la toxina tx3-4 en experimentos mostr\u00f3 acci\u00f3n neuroprotectora; redujo la muerte de c\u00e9lulas del hipocampo y restableci\u00f3 la funci\u00f3n de las neuronas afectadas por isquemia cerebral (derrame)<\/em>\u00ab, agreg\u00f3 el especialista.<\/p>\n

Gomez explic\u00f3 que los experimentos fueron realizados a nivel precl\u00ednico, es decir con la inyecci\u00f3n de las sustancias purificadas del veneno en ratones de laboratorio.<\/p>\n

\u00abCon la investigaci\u00f3n obtuvimos formas recombinantes de las toxinas para posteriormente utilizarlas como agentes terap\u00e9uticos. Una de las toxinas puede ser \u00fatil para el combate al dolor de pacientes con c\u00e1ncer o con sida en los casos de intolerancia a morfina<\/em>\u00ab, asegur\u00f3.<\/p>\n

Diferentes investigadores brasile\u00f1os trabajan hace m\u00e1s de dos d\u00e9cadas en el an\u00e1lisis de las sustancias del veneno de la ara\u00f1a de las bananeras y ya han conseguido aislar, purificar y sintetizar diferentes toxinas de la misma con uso medicinal.<\/p>\n

Adem\u00e1s de propiedades para tratar el dolor, la isquemia cerebral, las arritmias card\u00edacas, y la protecci\u00f3n de las neuronas y de las c\u00e9lulas del sistema nervioso, otras sustancias del veneno vienen siendo analizadas por su capacidad de transmisi\u00f3n de impulsos nerviosos y su acci\u00f3n sobre los m\u00fasculos de los vasos sangu\u00edneos y del intestino.<\/p>\n

Las investigaciones demostraron que dos de las toxinas (Tx2-5 y Tx2-6) tienen capacidad para provocar el priapismo (erecci\u00f3n del pene) y pueden ser usadas para desarrollar medicinas contra la impotencia sexual.<\/p>\n

– Fuente Argenpress.info<\/a><\/p>\n

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broadtrix 08 de octubre de 2008<\/em><\/p>\n

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TarantulasTubeWorld 22 de julio de 2008<\/em>: Nome cient\u00edfico: Phoneutria nigriventer Nome comum: Aranha Armadeira Esta esp\u00e9cie e dada como a mais agressiva do mundo, ergue-se apoiada sobre as patas traseiras e salta sobre o agressor, que muitas vezes \u00e9 atacado sem saber. Costuma viver em locais onde existem bananeiras, lenhas, telhas e tijolos empilhados e terrenos baldios. Tem h\u00e1bitos noturnos e n\u00e3o tem moradia fixa podendo entrar dentro de casas e, ao amanhecer, abrigar-se em sapatos e botas, causando acidentes quando s\u00e3o vestidos. Seu veneno tem a\u00e7\u00e3o neurot\u00f3xico, \u00e9 extremamente dolorido e pode levar a v\u00edtima ao \u00abestado de choque\u00bb, e at\u00e9 a morte quando se trata de crian\u00e7as pequenas e pessoas de idade. Os adultos que suportam a dor recebem tratamento local com anest\u00e9sicos e anti-histam\u00ednicos. Casos mais graves necessitam soroterapia e acompanhamento m\u00e9dico<\/strong>. <\/p>\n

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Rafasuttispider 21 de abril de 2008<\/em>: Aranha Armadeira (Phoneutria nigriventer) atacando<\/strong>. <\/p>\n

(27 febrero 2010)<\/p>\n","protected":false},"excerpt":{"rendered":"

El veneno de la llamada ara\u00f1a de las bananeras, uno de los m\u00e1s potentes del mundo, tiene propiedades medicinales para tratar la arritmia card\u00edaca y la isquemia cerebral, seg\u00fan investigadores brasile\u00f1os. Las nuevas propiedades medicinales del veneno de esta ara\u00f1a fueron identificados por investigadores del Instituto de Ense\u00f1anza y Pesquisas de la Santa Casa de Belo Horizonte, explic\u00f3 el especialista Marcus Vinicios Gomez<\/a> en un mensaje colgado el 24 de febrero en el portal de noticias cient\u00edficas \u00abToque da ciencia\u00bb<\/a> [[- Purifica\u00e7\u00e3o de toxinas da aranha armadeira no tratamento do derrame e da arritmia card\u00edaca<\/a>.]].<\/p>\n","protected":false},"author":1,"featured_media":947,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"_links":{"self":[{"href":"https:\/\/marina.swarpeca.es\/revista\/wp-json\/wp\/v2\/posts\/948"}],"collection":[{"href":"https:\/\/marina.swarpeca.es\/revista\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/marina.swarpeca.es\/revista\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/marina.swarpeca.es\/revista\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/marina.swarpeca.es\/revista\/wp-json\/wp\/v2\/comments?post=948"}],"version-history":[{"count":0,"href":"https:\/\/marina.swarpeca.es\/revista\/wp-json\/wp\/v2\/posts\/948\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/marina.swarpeca.es\/revista\/wp-json\/wp\/v2\/media\/947"}],"wp:attachment":[{"href":"https:\/\/marina.swarpeca.es\/revista\/wp-json\/wp\/v2\/media?parent=948"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/marina.swarpeca.es\/revista\/wp-json\/wp\/v2\/categories?post=948"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/marina.swarpeca.es\/revista\/wp-json\/wp\/v2\/tags?post=948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}