The first human corneas have been 3D printed by scientists at Newcastle University, UK. It means the technique could be used in the future to ensure an unlimited supply of corneas.
An automated system that uses robots has been designed to rapidly produce human mini-organs derived from stem cells. Researchers at the University of Washington School of Medicine in Seattle developed the new system.
Researchers tissue-engineered human pancreatic islets in a laboratory that develop a circulatory system, secrete hormones like insulin and successfully treat sudden-onset type 1 diabetes in transplanted mice.
Heart disease is a major global health problem — myocardial infarction annually affects more than one million people in the U.S. alone, and there is still no effective treatment. The adult human heart cannot regenerate itself after injury, and the death of cardiac muscle cells, known as cardiomyocytes, irreversibly weakens the heart and limits its ability to pump blood.
Major mental illnesses such as schizophrenia, severe depression and bipolar disorder share a common genetic link. Studies of specific families with a history of these types of illnesses have revealed that affected family members share a mutation in the gene DISC1. While researchers have been able to study how DISC1 mutations alter the brain during development in animal models, it has been difficult to find the right tools to study changes in humans. However, advancements in engineering human stem cells are now allowing researchers to grow mini-organs in labs, and gene-editing tools can be used to insert specific mutations into these cells.
Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.
Researchers are now able to use induced pluripotent stem cells (iPSC) to form a model of human adult-like cardiac muscle by introducing electric and mechanical stimulation at an early stage. Since this muscle is similar to the adult heart, it could serve as a better model for testing the effects of drugs and toxic substances than current tissue-engineered heart models. The study, performed by scientists at Columbia University, New York City, and funded by the National Institutes of Health, was published today in Nature.
Young women with premature ovarian insufficiency (POI) may be able to use their own bone marrow stem cells to rejuvenate their ovaries and avoid the effects of premature menopause, new research suggests. The preliminary results from the ongoing ROSE clinical trial will be presented Tuesday at ENDO 2018, the 100th annual meeting of the Endocrine Society, in Chicago, Ill.
The heart is the first organ to develop in the womb and the first cause of concern for many parents. For expecting mothers, the excitement of pregnancy is often offset by anxiety over medication they require. Parents and doctors often have to consider the mother’s health as well as the potential risk regarding how medication could affect their baby. The U.S. Food and Drug Administration requires certain drugs to be labeled with pregnancy exposure and risk. Some drugs are labeled to show that testing on animals has failed to demonstrate a risk but there are no adequate and well-controlled studies of pregnant women.
Whether caused by an undetected birth defect or by a heart attack (myocardial infarction), when a heart sustains damage, it can be difficult to repair.