Bone marrow stem cells used to regenerate skin
By mixing and matching a contemporary flu virus with the “Spanish flu” - a virus that killed between 20 and 50 million people 90 years ago in history’s most devastating outbreak of infectious disease - researchers have identified a set of three genes that helped underpin the extraordinary virulence of the 1918 virus. Writing today
Full Post: Scientists isolate genes that made 1918 flu lethal
A new study suggests that adult bone marrow stem cells can be used in the construction of artificial skin.
The findings mark an advancement in wound healing and may be used to pioneer a method of organ reconstruction. The study is published in Artificial Organs , official journal of the International Federation for Artificial Organs (IFAO), the The International Faculty for Artificial Organs (INFA) and the International Society for Rotary Blood Pumps (ISRBP).
To investigate the practicability of repairing burn wounds with tissue-engineered skin combined with bone marrow stem cells, the study established a burn wound model in the skin of pigs, which is known to be anatomically and physiologically similar to human skin.
Engineering technology and biomedical theory methods were used to make artificial skin with natural materials and bone marrow derived stem cells. Once the artificial skin was attached to the patient and the dermal layer had begun to regenerate, stem cells were differentiated into skin cells. The cells are self-renewing and raise the quality of healing in wound healing therapy. When grafted to the burn wounds, the engineered skin containing stem cells showed better healing, less wound contraction and better development of blood vessels.
Skin, the human body’s largest organ, protects the body from disease and physical damage, and helps to regulate body temperature. When the skin has been seriously damaged through disease or burns, the body often cannot act fast enough to repair them. Burn victims may die from infection and the loss of plasma. Skin grafts were originally developed as a way to prevent such consequences.
“We hope that this so-called ‘engineered structural tissue’ will someday replace plastic and metal prostheses currently used to replace damaged joints and bones by suitable materials and stem cells,” says Yan Jin of the Fourth Military Medical University, lead author of the study.
Researchers in one of the external groups of the Instituto Gulbenkian de Ciencia (IGC), in Portugal, have discovered a novel mechanism which regulates the process whereby new blood vessels are formed and wounds heal, including chronic wounds, such as those found in diabetic patients and those suffering from morbid obesity. These findings, by Sergio
Full Post: Discovery of new mechanism that regulates formation of blood vessels
Scientists have tricked bone marrow into releasing extra adult stem cells into the bloodstream, a technique that they hope could one day be used to repair heart damage or mend a broken bone, in a new study published today in the journal Cell Stem Cell. When a person has a disease or an injury, the
Full Post: Researchers trick bone marrow into releasing mesenchymal stem cells
Stem cell researchers at UCLA have proven definitively that blood stem cells are made during mid-gestational embryonic development by endothelial cells, the cells that line the inside of blood vessels. While the anatomic location in the embryo where blood stem cells originate has been well documented, the cell type from which they spring was less
Full Post: Scientists show that endothelial cells give rise to blood stem cells
Children with heart defects may someday receive perfectly-matched new heart valves built using stem cells from their umbilical cord blood, according to research presented at the American Heart Association’s Scientific Sessions 2008. When infants are born with malfunctioning heart valves that can’t be surgically repaired, they rely on replacements from animal tissue, compatible human organ
Full Post: Stem cells from umbilical cord blood may help build new heart valves
Stem cells derived from bone marrow may serve as a novel therapeutic option to treat a disease called epidermolysis bullosa (EB), a disorder characterized by extraordinarily fragile skin, according to a study prepublished online in Blood, the official journal of the American Society of Hematology. Epidermolysis bullosa is a disorder characterized by extraordinarily fragile skin
Full Post: Stem cells derived from bone marrow may offer novel therapeutic option for epidermolysis bullosa