introduction: as the ability to repair cartilage tissue in body is limited, finding a suitable method for cartilage regeneration has gained the attention of many scholars. for this purpose, scaffold structure and morphology, along with cell culture on it, can be a novel method to treat cartilage injuries, osteoarthritis. methods: in this study, polyhydroxybutyrate (phb) is selected as the scaff...

The incorporation and delivery of neurotrophic factors that stimulate nerve repair in previously developed tunable enzymatically crosslinked silk fibroin-based conduits are presented. In article number 2000753 by Joaquim M. Oliveira co-workers, glial cell line-derived factor (GDNF), acting upon motor sensory neurons, also instigating angiogenesis, uses these as a platform for its controlled del...

Peripheral nerve research is highly dynamic and a current major focus is the development of cell based supportive therapies as well as bioengineered nerve conduits to overcome the challenges in reconstructing long peripheral nerve defects. Whenever primary nerve repair cannot be performed without regeneration impairing tension at the suture sites, autologous nerve grafting or nerve tubulization...

Each year approximately 360,000 people in the United States suffer a peripheral nerve injury (PNI), which is a leading source of lifelong disability (Kelsey et al., 1997; Noble et al., 1998). The most frequent cause of PNIs is motor vehicle accidents, while gunshot wounds, stabbings, and birth trauma are also common factors. Patients suffering from disabilities as a result of their PNIs are als...

Tissue engineered nerve grafts (TENGs) have emerged as a potential alternative to autologous nerve grafts, the gold standard for peripheral nerve repair. Typically, TENGs are composed of a biomaterial-based template that incorporates biochemical cues. A number of TENGs have been used experimentally to bridge long peripheral nerve gaps in various animal models, where the desired outcome is nerve...

The therapy of neural nerve injuries that involve the disruption axonal pathways or tracts has taken a new dimension with development tissue engineering techniques. When peripheral injury (PNI), spinal cord (SCI), traumatic brain (TBI), neurodegenerative disease occur, intricate architecture undergoes alterations leading to growth inhibition and loss guidance through large distance. To improve ...

In order to promote regeneration after spinal cord injury, growth factors have been applied in vivo to rescue ailing neurons and provide a path finding signal for regenerating neurites. We previously demonstrated that soluble growth factor concentration gradients can guide axons over long distances, but this model is inherently limited to in vitro applications. To translate the use of growth fa...

Articular cartilage, the load-bearing tissue of the joint, has limited repair and regeneration ability. The scarcity of treatment modalities for large chondral defects has motivated researchers to engineer cartilage tissue constructs that can meet the functional demands of this tissue in vivo. Cartilage tissue engineering requires 3 components: cells, scaffold, and environment. ...

Tissue engineering is based on three main factors including scaffolds, cells and growth factors. Natural scaffolds derived from decellularized tissues and organs have been successfully used in tissue engineering. Decellularization studies have shown that natural scaffolds which maintaine their main structure and properties could be a suitable tool for studying cellular behaviors and preparation...