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Amniotic fluid stem cells repair gut damage
Date:3/24/2013

Stem cells taken from amniotic fluid were used to restore gut structure and function following intestinal damage in rodents, in new research published in the journal Gut. The findings pave the way for a new form of cell therapy to reverse serious damage from inflammation in the intestines of babies.

The study, funded by Great Ormond Street Hospital Children's Charity, investigated a new way to treat necrotizing enterocolitis (NEC), where severe inflammation destroys tissues in the gut. NEC is the most common gastrointestinal surgical emergency in newborn babies, with mortality rates of around 15 to 30 per cent in the UK.

While breast milk and probiotics can help to reduce the incidence of the disease, no medical treatments are currently available other than surgery once NEC sets in. Surgical removal of the dead tissue shortens the bowel and can lead to intestinal failure, with some babies eventually needing ongoing parenteral nutrition (feeding via an intravenous line) or an intestinal transplant.

In the study, led by the UCL Institute of Child Health, amniotic fluid stem (AFS) cells were harvested from rodent amniotic fluid and given to rats with NEC. Other rats with the same condition were given bone marrow stem cells taken from their femurs, or fed as normal with no treatment, to compare the clinical outcomes of different treatments.

NEC-affected rats injected with AFS cells showed significantly higher survival rates a week after being treated, compared to the other two groups. Inspection of their intestines, including with micro magnetic resonance imaging (MRI), showed the inflammation to be significantly reduced, with fewer dead cells, greater self-renewal of the gut tissue and better overall intestinal function.

While bone marrow stem cells have been known to help reverse colonic damage in irritable bowel disease by regenerating tissue, the beneficial effects from stem cell therapy in NEC appear to work
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Contact: Jenny Gimpel
jenny.gimpel@gosh.org
44-020-723-93043
University College London
Source:Eurekalert

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