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25/09/2011

Врачи научились выращивать глаза

 
 
Врачи научились выращивать глаза

Врачи научились выращивать глаза

Британские медики начали проводить первые в Европе операции с использованием человеческих стволовых клеток. Двенадцать человек, страдающих сильной потерей зрения, согласились принять участие в эксперименте по выращиванию себе новых глаз, сообщает BBC.


После долгих обсуждений юридических тонкостей с властями врачи из лондонской глазной клиники Moorfields Eye Hospital получили добро на проведение первых на территории Европы экспериментов с использованием человеческих эмбриональных стволовых клеток. Участвовать в уникальном эксперименте, имеющем огромное значение для мировой медицины, согласились 12 добровольцев, страдающих дистрофией сетчатки глаза.

Эта неизлечимая болезнь ведет к постепенной потере зрения. Как правило, заболевание проявляется у человека в раннем детстве. При этом дистрофия сетчатки глаза достаточно редкое явление – ей страдает примерно один человек на 10 000. В течение от одного до нескольких десятков лет больной постепенно теряет центральное зрение. На данный момент, юристы и медики проводят последние проверки безопасности уникального для Европы эксперимента, однако лондонские врачи уже получили разрешение на проведение двенадцати операций.

Испытания будут проводиться британскими врачами совместно со специалистами из американской компании Advanced Cell Technology (ACT), у которой уже есть некоторый опыт в медицинском применении стволовых клеток. Представители ACT уверены, что эксперименты по выращиванию верхнего слоя сетчатки глаза станут серьезным шагом вперед для регенеративной медицины. На данный момент, другая американская компания Geron применяет эту технологию для лечения пациентов, страдающих заболеванием спинного мозга.

Стволовые клетки являются своеобразным строительным материалом для организма. Теоретически, из каждого такого "кирпичика" можно вырастить практически любую клетку, которых у человека насчитывается более 200 типов. Сторонники применения стволовых клеток утверждают, что в будущем эта технология поможет лечить не только слепоту, но и множество других заболеваний вплоть до рака. Тем не менее, у регенеративной медицины много противников, которые считают недопустимым применение эмбриональных клеток, так как при их извлечении гибнет человеческий зародыш.

Doctors have learned to grow eyes

British doctors have started Europe's first transactions with the use of human stem cells. Twelve people who suffer from severe loss of vision, agreed to take part in an experiment on growing his new eye, reports the BBC.

After long discussions with the authorities of legal technicalities, doctors from the London Eye Hospital Moorfields Eye Hospital received the go-ahead for first in Europe of experiments using human embryonic stem cells. Participate in a unique experiment that has great significance for the world of medicine, 12 volunteers agreed to suffering from muscular dystrophy of the retina.

This incurable disease leads to a gradual loss of vision. Typically, the disease manifests itself in humans in early childhood. In this degeneration of the retina are rare - it affects about one person in 10 000. Within one to several tens of years the patient is losing the central vision. At this point, lawyers and doctors spend the last security check for a unique experiment in Europe, but London's doctors have already received permission to conduct the operations of twelve.

The tests will be carried out by British doctors, together with experts from the U.S. company Advanced Cell Technology (ACT), which already has some experience in the medical application of stem cells. Representatives of the ACT believe that experiments on the cultivation of the top layer of the retina will be a major step forward for regenerative medicine. At this point, another U.S. company Geron uses this technology to treat patients suffering from spinal cord disease.

Stem cells are a kind of building material for the body. Theoretically, from each of those "brick" can be grown almost any cell, where a person has more than 200 types. Supporters of stem cells argue that in the future, this technology will help to treat not only blindness but also many other diseases up to cancer. However, in regenerative medicine many opponents who feel inappropriate use of embryonic cells as well as in extracting human embryo dies.


Источник: vesti.ru

Russian portal of Medicine and Pharmacology


 
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