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Tissue Engineering

Tissue Engineered Vascular Grafts: A Breakthrough for Children With Heart Defects
 Tissue Engineered Vascular Grafts: A Breakthrough for Children With Heart Defects 968 1024 Abbie Miller
By: Abbie Miller
Heart

An innovation 30 years in the making is poised to change the way children with single ventricle disease experience life after a Fontan procedure. Children with single ventricle disease are often described as having “half a heart.” What this really means is that one of their ventricles (either the right or left lower chamber of…

Don’t Oversize Your Tissue-Engineered Vascular Grafts: Insights for the Translation of New Surgical Technologies
 Don’t Oversize Your Tissue-Engineered Vascular Grafts: Insights for the Translation of New Surgical Technologies 1024 683 Abbie Miller
By: Abbie Miller

Study shows that adoption of a tissue engineered vascular graft technology currently in clinical trials would require a shift in surgical approach. Tissue engineered vascular grafts (TEVGs) are designed to overcome two important problems associated with synthetic conduits used in surgeries for children with congenital heart disease (CHD): the lack of growth potential and the…

Single Ventricle, Many Research Angles
 Single Ventricle, Many Research Angles 1024 658 Katie Brind'Amour, PhD, MS, CHES
By: Katie Brind'Amour, PhD, MS, CHES

An overview of the people and projects behind one of the world’s most robust single-ventricle heart disease research hubs.  In the field of single-ventricle heart disease (SVHD), there are more questions than answers. What causes the heart to form with only one ventricle? At what point in fetal development might we intervene to improve its…

Tissue Engineering and Fetal Medicine: A New Frontier for Congenital Heart Disease
 Tissue Engineering and Fetal Medicine: A New Frontier for Congenital Heart Disease 1024 575 Abbie Miller
By: Abbie Miller
Fetus in utero receiving valvuloplasty

Procedures that utilize cardiac catheterization to improve fetal heart development are often successful, but they are not without risk. And even if they can successfully prevent the development of single ventricle disease, there is always ongoing heart valve disease (HVD). HVD may not be as life-threatening as single ventricle disease, but it requires lifelong care.…

Findings Show TEVG Stenosis Spontaneously Resolves
 Findings Show TEVG Stenosis Spontaneously Resolves 600 400 Katie Brind'Amour, PhD, MS, CHES
By: Katie Brind'Amour, PhD, MS, CHES
Tissue engineered vascular graft

The complication that halted a clinical trial for tissue-engineered vascular grafts for children with congenital heart disease may reverse spontaneously without clinical complications. Based on promising laboratory and animal modeling of a biodegradable scaffold seeded with a patient’s own cells, a clinician-scientist research team now based at Nationwide Children’s Hospital initiated a pediatric tissue engineered…

Using Computer Models to Predict How Tissue Engineered Vascular Grafts Will Work
 Using Computer Models to Predict How Tissue Engineered Vascular Grafts Will Work 150 150 Kevin Mayhood
By: Kevin Mayhood

Model and experimental data strongly suggest testing TEVGs until scaffold has biodegraded Identical tissue engineered vascular grafts (TEVGs) being tested in small-diameter veins and arteries of a mouse model performed well for 12 weeks. At 14 weeks, all TEVGs in the veins continued performing well, but all in the arteries suddenly failed. During their effort to understand…

Why Do Synthetic Tracheal Replacements Fail?
 Why Do Synthetic Tracheal Replacements Fail? 150 150 Lauren Dembeck
By: Lauren Dembeck

Synthetic tracheal replacements experience infectious, inflammatory and mechanical failures. Tracheal defects in children and adults can often be addressed with current surgical techniques. However, when a defect is large, greater than 50% of an adult windpipe or 30% of a pediatric windpipe, few options exist to repair it without donor tissue. For decades, tissue engineers…

From What-if to Widely Available – A Proposed Path for Tissue Engineered Vascular Grafts
 From What-if to Widely Available – A Proposed Path for Tissue Engineered Vascular Grafts 150 150 Abbie Miller
By: Abbie Miller

What if you could utilize tissue engineering, imaging and 3D printing technologies to bring the benefits of a tissue engineered vascular graft to every child who needs one? Children born with a single ventricle heart defect undergo a series of surgeries and procedures to reroute the blood flow through their heart. The Fontan operation is…

Growing Tissue to Help Children With Short Bowel Syndrome
 Growing Tissue to Help Children With Short Bowel Syndrome 1024 575 Kevin Mayhood
By: Kevin Mayhood

Research using a small animal model shows that it matters where in the body the cultured intestine is grown. Researchers at Nationwide Children’s Hospital are hoping to use short bowel syndrome patients’ own cells to grow extra tissue needed for their small intestine to function properly. Using rat models, the team of physician-scientists found that…

A Key to Preventing Stenosis in Tissue-Engineered Vascular Grafts
 A Key to Preventing Stenosis in Tissue-Engineered Vascular Grafts 600 400 Kevin Mayhood
By: Kevin Mayhood
Tissue engineered vascular graft

Seeding a high number of bone marrow mononuclear cells on graft appears to prevent narrowing. Tissue-engineered vascular grafts hold promise for children with congenital heart disease because the grafts, which carry a patient’s own cells, have the potential to grow and regenerate just as the child’s blood vessels do. But over time, some grafts develop…

A Narrow Focus: Perfecting Tissue Engineered Vascular Grafts
 A Narrow Focus: Perfecting Tissue Engineered Vascular Grafts 1024 575 Abbie Miller
By: Abbie Miller
image of heart with fontan conduit highlighted

A pair of surgeon-researchers is perfecting tissue engineered vascular grafts through bench, clinical and computational modeling studies.