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    Lab-Grown Vaginas, Noses Herald New Options for Patients

    Regenerative surgery takes a leap forward, two studies show

    WebMD News from HealthDay

    By Dennis Thompson

    HealthDay Reporter

    THURSDAY, April 10, 2014 (HealthDay News) -- Doctors have successfully implanted laboratory-grown vaginas into four teenage girls suffering from a rare birth defect, creating new organs with feel and function comparable to that of a "natural" vagina, a new study reports.

    Another research team is reporting the first successful nose reconstruction surgery using laboratory-grown cartilage.

    In both cases, doctors harvested the patients' own cells and used them to create new tissue that was then grafted back onto the body.

    The two studies, published online April 11 in The Lancet, show how years of research into tissue engineering for skin grafts is being put to practical use for other purposes, said Dr. Samuel Lin, an associate professor of surgery at Harvard Medical School and site director of Harvard's plastic surgery residency training program.

    "Perhaps now we're just seeing the translational products of all that research that has been going on for years," Lin said.

    One study involved girls aged 13 to 18 who were born with Mayer-Rokitansky-Kuster-Hauser syndrome, a rare genetic condition in which the vagina and uterus are underdeveloped or absent.

    Researchers harvested muscle cells and epithelial cells from a biopsy (surgically removed tissue sample) of each girl's genitals. Epithelial cells line body cavities and are able to generate or release fluid and detect sensation.

    In a process that took three to five weeks, doctors grew the cells into larger tissue cultures that were then attached to a biodegradable "scaffold" hand-sewn into the shape of a vagina. The scaffolds were tailor-made to fit each patient and are made of the same type of material used in surgical sutures.

    Once the new vaginas were ready, surgeons created a canal in each patient's pelvis and stitched the scaffold to the girls' reproductive structures. The girls' bodies proceeded to form nerves and blood vessels into the grafts, and gradually replaced the engineered scaffold with a new, permanent organ.

    "It's just like when you're having plastic surgery and they place a skin graft on you to replace damaged tissue," said senior author Dr. Anthony Atala, director of the Wake Forest Baptist Medical Center's Institute for Regenerative Medicine in Winston-Salem, N.C. "The graft will re-grow blood vessels and nerves," he said.

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