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Hearing restoration may be possible with cochlear repair after transplant of human cord blood cells

Researchers found that transplantation of human cord blood cells can repair cochlear damage in animal models, with dramatic repair observed despite few human-derived cells migrating to the cochlea. The study suggests a potential treatment strategy for inner ear rehabilitation and hearing impairments caused by cochlear damage.

New source of heart stem cells discovered

A new group of stem cells in the epicardium can regenerate cardiomyocytes, smooth muscle cells, endothelial cells, and fibroblasts. This finding advances the hope of recapitulating developmental events to regenerate injured heart tissue, with potential applications for treating adults with heart failure.

SourceBoston Children's Hospital·JournalNature·DateJun 22, 2008

Talking to cells

Researchers at the University of Nottingham created artificial polymer vesicles that can communicate with bacterial cells using sugar groups. These vesicles transfer information to the cells in the form of dye molecules, opening possibilities for targeted drug delivery and treatment.

SourceWiley·DateJun 5, 2008

Stem cells at root of antlers' branching

Researchers have found evidence of mesenchymal stem cells in the periosteum of deer pedicles, which are responsible for antler regeneration. The study suggests that understanding this unique process could have significant implications for regenerative medicine.

SourcePLOS·JournalPLOS ONE·DateApr 29, 2008

MicroRNAs help zebrafish regenerate fins

Biologists at Duke University Medical Center have discovered microRNAs that control the regeneration of zebrafish fins. The study found that reducing levels of one microRNA, miR-133, speeds up fin regrowth, while increasing it slows it down. This discovery could lead to new ways to stimulate human tissue regeneration.

SourceDuke University Medical Center·JournalGenes & Development·DateMar 14, 2008

Role for microRNAs in limb regeneration

Research reveals that microRNA depletion is necessary for tissue regeneration and that manipulating certain microRNA levels can enhance regenerative success in zebrafish. By tweaking the FGF signaling pathway, scientists were able to increase or decrease specific microRNA levels, resulting in improved or inhibited fin regeneration.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateMar 14, 2008

The eyes have it

Researchers at the University of Copenhagen have developed a method to determine a person's birth date using eye lens proteins, which remain unchanged after childhood. This technique has potential applications in health science research and forensic analysis, such as studying cancer tissue regeneration.

SourcePLOS·JournalPLOS ONE·DateJan 29, 2008

Researchers create mathematical model of fruit fly eyes

Researchers at Northwestern University have developed a functional equation that explains how cells pack together to form the eyes of Drosophila, or fruit flies. This pared-down model uses only two parameters and demonstrates how it can be applied to different kinds of tissues, leading to potential advances in regenerative medicine.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateJan 11, 2008

Nerves controlling muscles are best repaired with similar nerves

A team of surgeons at Washington University School of Medicine has found that using motor nerves to repair damaged muscles yields better results than traditional sensory nerve grafts. The study used a novel approach, where intact motor nerves were used as grafts in rat models, resulting in significant improvements in muscle function.

SourceWashU Medicine·JournalMicrosurgery·DateMay 11, 2007

Whole body regeneration from a blood vessel

Researchers find unique mode of whole body regeneration (WBR) in sea squirts, which arises from systemically induced signals and may travel through circulation. RA signaling plays a vital role in WBR, with overexpression leading to accelerated regeneration.

SourcePLOS·JournalPLOS Biology·DateMar 5, 2007

Forsyth scientists discover early key to regeneration

Scientists at The Forsyth Institute have discovered that programmed cell death is necessary for regeneration to occur. Apoptosis plays a critical role in development and a novel role in regeneration, allowing medically therapeutic regeneration. The study uses the Xenopus tadpole as a model organism.

SourceForsyth Institute·JournalDevelopmental Biology·DateDec 13, 2006

Newts which regrow their hearts

Scientists at the Max Planck Institute discovered that newt heart cells can re-differentiate after damage, allowing for complete repair and restoration of function. The researchers found that Phospho-H3 protein marks the G2 phase of cell cycle and indicates regeneration without stem cells.

SourceMax-Planck-Gesellschaft·JournalJournal of Cell Science·DateDec 5, 2006

How fish mend a broken heart

Researchers found that zebrafish have progenitor cells and an epicardium that can restore wounded heart muscle. The study's findings suggest that these mechanisms could be utilized for therapies, potentially improving the regenerative capacity of mammalian hearts.

SourceCell Press·JournalCell·DateNov 2, 2006

A plastic pill for periodontal problems

Rutgers scientists have developed a polymer-based drug delivery system to kill bacteria that attack gum tissue during periodontal disease, promoting healing and regeneration of tissue and bone around teeth. The system treats bacterial infection, inflammation, and pain with pharmaceuticals incorporated into the material itself.

Hens' teeth not so rare after all

Researchers have found a naturally occurring mutant chicken called Talpid with a complete set of teeth, similar to those of crocodiles. The team successfully induced teeth growth in normal chickens by activating dormant genes, paving the way for potential applications in tissue regeneration and tooth replacement.

SourceUniversity of Manchester·JournalCurrent Biology·DateFeb 22, 2006

Neural stem cells are long-lived

Researchers have discovered that neural stem cells in adult mice can respond to Shh signaling and give rise to other neural cell types, including glial cells. The study also found that quiescent stem cells can self-renew after a year, with implications for tissue repair and cancer progression.