Advertisement

Topics

3D-Printed Polylactic Acid (PLA) Scaffolds Promote Bone-like Matrix Deposition In-vitro.

08:00 EDT 11th April 2019 | BioPortfolio

Summary of "3D-Printed Polylactic Acid (PLA) Scaffolds Promote Bone-like Matrix Deposition In-vitro."

Large bone defects represent a significant challenge for clinicians and surgeons. Tissue engineering for bone regeneration represents an innovative solution for this dilemma and may yield attractive alternate bone substitutes. 3D printing with inexpensive desktop printers show promise in generating high-resolution structures mimicking native tissues using biocompatible, biodegradable and cost-effective thermoplastics, which are already FDA approved for food use, drug delivery and many medical devices. Micro-porous 3D-printed PLA scaffolds, with different pore sizes (500 µm, 750 µm and 1000 µm), were designed and manufactured using an inexpensive desktop 3D-printer and mechanical properties were assessed. Scaffolds were compared for cell growth, activity, and bone-like tissue formation using primary human osteoblasts. Osteoblasts showed high proliferation, metabolic activity, and osteogenic matrix protein production, in which 750 µm pore size scaffolds showed superiority. Further experimentation using human mesenchymal stem cells (MSC) on 750 µm pore scaffolds showed their ability in supporting osteogenic differentiation. These findings suggest that even in the absence of any surface modifications, low-cost 750 µm pores-size 3D printed scaffolds may be suitable as a bone substitute for repair of large bone defects.

Affiliation

Journal Details

This article was published in the following journal.

Name: ACS applied materials & interfaces
ISSN: 1944-8252
Pages:

Links

DeepDyve research library

PubMed Articles [16639 Associated PubMed Articles listed on BioPortfolio]

Antimicrobial Activity of 3D-Printed Poly(ε-Caprolactone) (PCL) Composite Scaffolds Presenting Vancomycin-Loaded Polylactic Acid-Glycolic Acid (PLGA) Microspheres.

BACKGROUND The aim of this study was to design and test a novel composite scaffold with antibacterial efficacy for treating bone infections using a three-dimensional (3D) printed poly(ε-caprolactone)...

Vascularized 3D printed scaffolds for promoting bone regeneration.

3D printed scaffolds hold promising perspective for bone tissue regeneration. Inspired by process of bone development stage, 3D printed scaffolds with rapid internal vascularization ability and robust...

Ursolic acid loaded-mesoporous bioglass/chitosan porous scaffolds as drug delivery system for bone regeneration.

Bioglass scaffolds have great application potentials in orthopedics, and Ursolic acid (UA) can effectively promote in vivo new bone formation. Herein, we for the first time developed the mesoporous bi...

The effect of larger than cell diameter polylactic acid surface patterns on osteogenic differentiation of rat dental pulp stem cells.

Topography of the scaffold is one of the most important factors defining the quality of artificial bone. However, the production of precise micro- and nano-structured scaffolds, which is known to enha...

Surface modification of nanodiamond: Toward the dispersion of reinforced phase in poly-l-lactic acid scaffolds.

The agglomeration of nanodiamond severely reduces the reinforcement in matrix of composites although it is often used as a reinforcing phase. In this study, nanodiamond was modified by phospholipid to...

Clinical Trials [7756 Associated Clinical Trials listed on BioPortfolio]

Comparison Synthetic Hydroxyapatite and Inorganic Bovine Bone in Sinus Floor Elevation

This is set as prospective clinical trial to correlate histologically and radiologically the performance of four different bone grafts (synthetic hydroxyapatite alone, synthetic hydroxyapa...

Gene-activated Matrix for Bone Tissue Repair in Maxillofacial Surgery

The purpose of this study is to evaluate safety and efficacy of gene-activated matrix ("Nucleostim") for regeneration of bone tissue in maxillofacial area. Patients with congenital and acq...

Clinical Trial of Use of Autologous Bone Marrow Stem Cells Seeded on Porous Tricalcium Phosphate Matrix and Demineralized Bone Matrix in Patients With Osteonecrosis

The purpose of this study is to evaluate the safety of use of autologous bone marrow stem cells seeded on porous tricalcium phosphate matrix and demineralized bone matrix in patients with ...

A Clinical Evaluation of an Esterified Hyaluronic Acid Matrix in Burn Patients for STSG

Burn patients meeting inclusion criteria will receive the esterified hyaluronic acid matrix as the primary matrix to manage their wound, in conjunction with the standard of care for managi...

Use of Scaffolds for Treatment of Gingival Recession Associated With Interproximal Tissue Deficiency

This study will seek to evaluate the predictability and efficacy of a Computer Aided Design-Computer Aided Manufacturing and additively manufactured polycaprolactone and hydroxyapatite sca...

Medical and Biotech [MESH] Definitions

Bone-forming cells which secrete an EXTRACELLULAR MATRIX. HYDROXYAPATITE crystals are then deposited into the matrix to form bone.

Major component of chondrocyte EXTRACELLULAR MATRIX of various tissues including bone, tendon, ligament, SYNOVIUM and blood vessels. It binds MATRILIN PROTEINS and is associated with development of cartilage and bone.

Vitamin K-dependent calcium-binding protein synthesized by OSTEOBLASTS and found primarily in BONES. Serum osteocalcin measurements provide a noninvasive specific marker of bone metabolism. The protein contains three residues of the amino acid gamma-carboxyglutamic acid (Gla), which, in the presence of CALCIUM, promotes binding to HYDROXYAPATITE and subsequent accumulation in BONE MATRIX.

The continuous turnover of bone matrix and mineral that involves first, an increase in resorption (osteoclastic activity) and later, reactive bone formation (osteoblastic activity). The process of bone remodeling takes place in the adult skeleton at discrete foci. The process ensures the mechanical integrity of the skeleton throughout life and plays an important role in calcium homeostasis. An imbalance in the regulation of bone remodeling's two contrasting events, bone resorption and bone formation, results in many of the metabolic bone diseases, such as OSTEOPOROSIS.

A specialized CONNECTIVE TISSUE that is the main constituent of the SKELETON. The principle cellular component of bone is comprised of OSTEOBLASTS; OSTEOCYTES; and OSTEOCLASTS, while FIBRILLAR COLLAGENS and hydroxyapatite crystals form the BONE MATRIX.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topic

Osteoporosis
Osteoporosis is a disease in which the bones become extremely porous, are subject to fracture, and heal slowly, occurring especially in women following menopause and often leading to curvature of the spine from vertebral collapse. Follow and track&n...


Searches Linking to this Article