![\"\"](\"http:\/\/feeling.com.mx\/img\/2012\/01\/esperm-300x207.jpg\" "\\"esperm\\"")
Una dosis de ultrasonido en los test\u00edculos puede detener la producci\u00f3n de esperma, de acuerdo con un grupo de investigadores que desarrollan una nueva forma de m\u00e9todos anticonceptivos.<\/p>\nUna dosis de ultrasonido en los test\u00edculos puede detener la producci\u00f3n de esperma, de acuerdo con un grupo de investigadores que desarrollan una nueva forma de m\u00e9todos anticonceptivos.<\/p>\n
Un estudio en ratas que apareci\u00f3 en la publicaci\u00f3n Reproductive Biology and Endocrinology demostr\u00f3 que ondas sonoras pueden ser utilizadas para reducir la cantidad de esperma a niveles que podr\u00edan causar infertilidad en humanos. <\/p>\n
Los investigadores a cargo del estudio describieron el ultrasonido como un \u00abcandidato prometedor\u00bb a convertirse en un m\u00e9todo anticonceptivo.<\/p>\n
Sin embargo, todav\u00eda ser\u00e1n necesarios muchos m\u00e1s estudios sobre el tema antes de que pueda ser utilizado en la pr\u00e1ctica.<\/p>\n
El concepto se propuso primero en los a\u00f1os 70, pero el tema volvi\u00f3 hace poco a llamar la atenci\u00f3n de cient\u00edficos, especialmente los de la Universidad de Carolina del Norte, en Estados Unidos, que ganaron una beca de la fundaci\u00f3n de Bill y Melinda Gates.<\/p>\n
En humanos y en ratas<\/strong><\/p>\n Encontraron que dos dosis de 15 minutos \u00abreducen significativamente\u00bb el n\u00famero de c\u00e9lulas productoras de espermas y los niveles de esperma.<\/p>\n Tuvo sus niveles m\u00e1s altos de efectividad cuando se realiz\u00f3 en dos d\u00edas aparte y a trav\u00e9s de agua caliente salada.<\/p>\n En humanos, los investigadores aseguraron que los hombres se consideran \u00absubf\u00e9rtiles\u00bb cuando la proporci\u00f3n de esperma cae por debajo de los 15 millones de espermatozoides por mililitro.<\/p>\n El n\u00famero de espermatozoides en ratas se redujo a menos de 10 millones por mililitro.<\/p>\n El investigador jefe, James Tsuruta, dijo: \u00abSe necesitan m\u00e1s estudios para determinar cu\u00e1nto dura el efecto anticonceptivo y si es seguro utilizarlo en m\u00faltiples ocasiones\u00bb.<\/p>\n M\u00e1s trabajo<\/strong> As\u00edmismo, deber\u00e1n investigar si podr\u00eda haber da\u00f1os acumulativos al repetir las dosis. A\u00f1adi\u00f3 que es probable que pueda haber una recuperaci\u00f3n de la producci\u00f3n de esperma, pero que el \u00abesperma podr\u00eda da\u00f1arse y cualquier beb\u00e9 podr\u00eda salir con problemas\u00bb cuando se reanude la producci\u00f3n de esperma.<\/p>\n \u00abLo \u00faltimo que queremos es un da\u00f1o prolongado de la esperma\u00bb, dijo.<\/p>\n *Nota de popsci.com Treated Testis The testis is composed of many tubes called \u00abseminiferous tubules.\u00bb The seminiferous tubule on the left is from a testis that was not treated with ultrasound while the tubule on the right is from a testis that was treated with ultrasound. The ultrasound-treated tubule is completely lacking testicular sperm and has lost almost all immature germ cells, decreasing its overall diameter while greatly increasing the amount of \u00abempty\u00bb space in the center of the tubule. Courtesy James Tsuruta and Paul Dayton Scientists first studied ultrasound for contraception back in the 1970s, testing it on rats, monkeys, dogs and men. But other researchers who later tried to duplicate those results were stumped, and some reproductive health scientists dismissed it as hooey. Ultrasonic therapy languished for several years before Tsuruta and others resumed working on it.<\/p>\n Lots more studies would need to be done to make sure this is a safe method of contraception, however. There are concerns about the duration of treatment, and there could be adverse sexual effects. The sperm that come back might be damaged, which could impact embryo development after fertilization, other researchers said. So it\u2019s not a male birth control method, at least not yet. The rat study was published Monday in the journal Reproductive Biology and Endocrinology.<\/p>\n","protected":false},"excerpt":{"rendered":" Una dosis de ultrasonido en los test\u00edculos puede detener la producci\u00f3n de esperma, de acuerdo con un grupo de investigadores que desarrollan una nueva forma de m\u00e9todos anticonceptivos. Un estudio en ratas que apareci\u00f3 en la publicaci\u00f3n Reproductive Biology and Endocrinology demostr\u00f3 que ondas sonoras pueden ser utilizadas para reducir la cantidad de esperma a niveles que podr\u00edan causar infertilidad en humanos. Los investigadores a cargo del estudio describieron el…<\/p>\n","protected":false},"author":2,"featured_media":14024,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[29,48087],"tags":[5430,5431,5432],"views":725,"_links":{"self":[{"href":"https:\/\/www.feeling.com.mx\/site\/wp-json\/wp\/v2\/posts\/14023"}],"collection":[{"href":"https:\/\/www.feeling.com.mx\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.feeling.com.mx\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.feeling.com.mx\/site\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.feeling.com.mx\/site\/wp-json\/wp\/v2\/comments?post=14023"}],"version-history":[{"count":0,"href":"https:\/\/www.feeling.com.mx\/site\/wp-json\/wp\/v2\/posts\/14023\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.feeling.com.mx\/site\/wp-json\/wp\/v2\/media\/14024"}],"wp:attachment":[{"href":"https:\/\/www.feeling.com.mx\/site\/wp-json\/wp\/v2\/media?parent=14023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.feeling.com.mx\/site\/wp-json\/wp\/v2\/categories?post=14023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.feeling.com.mx\/site\/wp-json\/wp\/v2\/tags?post=14023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n El equipo necesita asegurarse de que el ultrasonido produce un efecto reversible, es decir, anticoncepci\u00f3n mas no esterilizaci\u00f3n.<\/p>\n
\nAllan Pacey, profesor de androlog\u00eda en la Universidad de Sheffield, en Reino Unido, dijo: \u00abEs una buena idea, pero se necesita mucho m\u00e1s trabajo\u00bb.<\/p>\n
\nZapping Testicles With Ultrasonic Pulses Shown To Be Effective Contraceptive
\nBy Rebecca BoylePosted 01.30.2012 at 12:12 pm14 Comments<\/p>\n
\nAn ultrasound zap to the testicles can stop the production of sperm, reducing overall sperm count to a level that would render males infertile, according to a new study involving rats. Further studies are still needed to test how long this new contraceptive method would last, and whether infertility could be reversed. But for the researchers studying rat and monkey testicles, the early results are pretty gratifying.
\nResearchers at the University of North Carolina School of Medicine rotated high-frequency ultrasound transducers around the testes of rats. They put the animals\u2019 testes in a cup full of saline solution to provide better conduction between the transducer and the skin. Then they measured the animals\u2019 sperm counts to see how much they dropped. After several tests, scientists led by James Tsuruta found the ideal therapy was two 15-minute sessions, two days apart, which led to a dramatic reduction in sperm.
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\nScience, Rebecca Boyle, contraception, human sperm, life sciences, male contraception, male reproductive organs, sex, sperm, ultrasonic sensors, ultrasoundThis was all pretty promising, so the foundation that funded the rat study commissioned a second study in monkeys. <\/p>\n