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'Recycled' kidneys for transplant come a step closer

Tue, Jun 02, 2015, 05:36 PM
New York, June 2 , 2015: Donated kidneys that are discarded due to abnormalities or other factors may soon be "recycled" to engineer tailor-made replacement kidneys for patients, the US scientists have reported in two studies.

"We believe these two studies provide critical information to the booming field of organ bioengineering as it applies to the kidney," said Giuseppe Orlando, transplant surgeon at the Wake Forest Baptist Medical Center in the US.

Orlando is part of a team at the Wake Forest Institute for Regenerative Medicine aiming to recycle human kidneys. Another group at the institute is doing the same thing with pig kidneys.

The process begins by washing the discarded organs in a mild detergent to remove all cells.

The idea is to replace these cells with a patient's own kidney stem cells, making a tailor-made organ that would not be rejected and would not require the use of powerful anti-rejection medication.

In one study, the researchers evaluated whether the washing process affects kidney vessels called the glomerulus, which are vital to the kidney's role of filtering contaminants out of the body.

In the study published in the journal Transplantation, the research team reported that the size, structure and function of the micro-vessels in the glomerulus are preserved after the cell-removal process.

"The fact that they are preserved means they can potentially facilitate the repopulation of cells into the structure and reduce the potential of clot formation," Orlando said.

In a separate study, published in the journal CellR4, the team reported on the interactions that occur when stem cells are placed on kidney structures that have been through the cell removal process.

The team seeded stem cells harvested from amniotic fluid onto sections of kidney structures.
Agency: IANS
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