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tag bone fracture developmental biology

A Molecular Switch for Bone Loss
Mariella Bodemeier Loayza Careaga, PhD | Jan 23, 2024 | 4 min read
Blocking an abnormally active signaling pathway in skeletal stem and progenitor cells alleviates bone mass decline in middle-aged mice. 
Striving for Perfect Balance
Jennifer Fisher Wilson | Apr 6, 2003 | 6 min read
Late last year, the Food and Drug Administration approved the first osteoporosis treatment that stimulates bone formation, instead of slowing bone breakdown as other drugs do. Teriparatide decreased vertebral fractures by 90% while increasing spinal bone mass. This new drug is a portion of human parathyroid hormone (PTH), the primary regulator of calcium and phosphate metabolism in bone. Teriparatide (Forteo) is manufactured by Eli Lilly and Co. and is a clear step forward, though it does no
Cancer-Enhancing Stress
Hayley Dunning | Jul 17, 2012 | 2 min read
Depression in post-op breast cancer patients can cause tumors to establish in bone.
An illustration of flowers in the shape of the female reproductive tract
Uterus Transplants Hit the Clinic
Jef Akst | Aug 1, 2021 | 10+ min read
With human research trials resulting in dozens of successful deliveries in the US and abroad, doctors move toward offering the surgery clinically, while working to learn all they can about uterine and transplant biology from the still-rare procedure.
Human Mesenchymal Stem Cells Differentiate in the Lab
Ricki Lewis | Apr 11, 1999 | 5 min read
While prominent scientists plead with legislators to reconsider their conservative stance on funding human embryonic stem (ES) cell research, a six-year-old company in Baltimore is quietly making the matter moot. In a just-released tour-de-force research report, it is no longer quite so quiet.1 Researchers at Osiris Therapeutics and the Johns Hopkins University School of Medicine coaxed human mesenchymal stem cells (hMSCs) from adults' bone marrow to develop into cartilage, fat, and bone cells
Old ovaries, new eggs
Tia Ghose | Apr 11, 2009 | 2 min read
Are female mammals born with all the eggs they'll ever have, or can they produce new eggs into adulthood? The question has been vociferously debated, but now, a study published online in Nature Cell Biology today (April 12) reports that at least in mice, adult female ovaries have a store of stem cells that have the potential to generate new eggs. Human oocyte Image: Wikimedia CommonsThe study "is a huge step in quelling this debate," Jonathan Tilly, a reproductive biologist at Harvard Medical
How Orphan Drugs Became a Highly Profitable Industry
Diana Kwon | May 1, 2018 | 10+ min read
Government incentives, advances in technology, and an army of patient advocates have spun a successful market—but abuses of the system and exorbitant prices could cause a backlash.
How to Track Cell Lineages As They Develop
Kelly Rae Chi | Dec 1, 2016 | 7 min read
Sequencing and gene-editing advances make tracing a cells journey throughout development easier than ever.
Rethinking Lymphatic Development
Amanda B. Keener | Aug 1, 2015 | 9 min read
Four studies identify alternative origins for cells of the developing lymphatic system, challenging the long-standing view that they all come from veins.
A Paradigm Shift in Stem Cell Research?
Ricki Lewis | Mar 5, 2000 | 9 min read
Photo: E.D. Laywell, UT MemphisMultipotent clones of cells derived from the adult human brain With the promises and challenges of stem cell research in the headlines, visions of artificial livers dance in the public's eye. Bioethicists, politicians, and citizens alike continue to debate whether public funds should be used to obtain cells from human embryos and fetuses. On the scientific front, however, the implications of stem cell research are even more profound than offering replacement parts.

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