Provoking Regeneration
From EurekAlert!: "When a person has a disease or an injury, the bone marrow mobilises different types of stem cells to help repair and regenerate tissue. ... new research [shows] that it may be possible to boost the body's ability to repair itself and speed up repair, by using different new drug combinations to put the bone marrow into a state of 'red alert' and send specific kinds of stem cells into action. In the new study, researchers tricked the bone marrow of healthy mice into releasing two types of adult stem cells - mesenchymal stem cells, which can turn into bone and cartilage and that can also suppress the immune system, and endothelial progenitor cells, which can make blood vessels and therefore have the potential to repair damage in the heart. ... The researchers were able to choose which groups of stem cells the bone marrow released, by using two different therapies. Ultimately, the researchers hope that their new technique could be used to repair and regenerate tissue, for example when a person has heart disease or a sports injury, by mobilising the necessary stem cells. The researchers also hope that they could tackle autoimmune diseases such as rheumatoid arthritis, where the body is attacked by its own immune system, by kicking the mesenchymal stem cells into action."
Link: http://www.eurekalert.org/pub_releases/2009-01/icl-scu010709.php