Dynamic‐based systems are bio‐designed in order to mimic the micro‐environments of the bone tissue. There is limited direct comparison between perfusion and perfusion‐rotation forces in designing a bioreactor. Hence, in current study, we aimed to compare given bioreactors for bone regeneration. Two types of bioreactors including rotating & perfusion and perfusion bioreactors were designed. Mesenchymal

Nanotechnology empowered localized cancer chemotherapy has indicated a promising performance for targeting and controlled release of anti‐cancer agents over a period of time to eliminate local‐regional recurrence of cancers and also to improve the tissue regeneration during/after treatment. Electrospun nanofiber‐based implantable drug‐delivery systems have been established as one of the most effective

The metastable and stable equilibria of a precipitation in the biomimetic system Simulated Body Fluid (SBF)–CaCl2–K2HPO4–KOH–H2O were modeled in the pH region 3–7 at a Ca/P molar ratio of 1 using a thermodynamic approach. Saturation indices (SI) of the solid phases were calculated and used to prognose the salt precipitation/dissolution processes. At рН < 4, the solutions are undersaturated (SI < 0)

Optimal combination of stem cells and biocompatible support material is a promising strategy for successful tissue engineering. The required differentiation of stem cells is crucial for functionality of engineered tissues and can be regulated by chemical and physical cues. Here we examined how boundary cap neural crest stem cells (bNCSCs) are affected when cultured in the same medium, but on collagen-

Shape memory polymer (SMP) foams are a promising material for hemostatic dressings due to their biocompatibility, high surface area, excellent shape recovery, and ability to quickly initiate blood clotting. Biodegradable SMP foams could eliminate the need for a secondary removal procedure of hemostatic material from the patients' wound, further facilitating wound healing. In this study, we developed

Graphene oxide (GO) has several potential biomedical applications and therefore cytotoxic evaluation of GO is very important. However, the two most common in vitro models for testing cytotoxicity-primary human cells and immortalized cell lines-suffer serious limitations, namely limited supplies of cells and unrealistic cellular responses, respectively. Here, we demonstrate the use of embryonic stem

Facial nerves are frequently crushed or cut during facial surgery. In this study, the feasibility of repairing facial nerves in rabbits after crush or cut off injury was evaluated using collagen conduits with A collagen-binding domain (CBD)-human basic fibroblast growth factor (bFGF). A total of 39 six-month-old New Zealand White rabbits were randomly divided into four groups of nine rabbits, and bilateral

This article reviews the biological outcome of the concentrated growth factor (CGF), a new platelet derivative used for tissue regeneration, in published articles related to the use of this product in basic and clinical studies. An electronic literature research using PubMed and SCOPUS was performed using combination of keywords: "concentrated growth factor" (OR "CGF"), AND "stem cells," AND "cells"

The prosthetic mesh, which is widely used in tension-free hernioplasty, often result in avascular stiff fibrotic scar or mesh shrinkage, causing chronic pain and infection. Here, we developed an autologous bionic tissue (ABT), which was composed of autologous bone marrow-derived mesenchymal stem cells (MSCs), poly (lactic-co-glycolic acid) (PLGA) porous scaffolds, and extracellular matrix (ECM) produced

Collagen 1 (COL1) and fibronectin (FN) are extracellular matrix proteins that contribute in cell activity and involve in regulating dental pulp cells (DPCs). The purpose of this study was to investigate the effect of COL1 and FN on the behavior of DPCs. Here, DPCs were grown under three different conditions: COL1 coating, FN coating, and control group without coating. The proliferation and differentiation

Poly (lactate-co-glycolate) (PLGA) is a typical biocompatible and biodegradable synthetic polymer. The addition of TiO2 nanoparticles has shown to improve compressive modulus of PLGA scaffolds and reduced fast degradation. A novel method has been applied to fabricate PLGA/TiO2 scaffolds without using any inorganic solvent, with aim of improving the biocompatibility, macroscale morphology and well inter-connected

Collagen biomaterials are widely used for soft tissue augmentation. Cross-linking techniques for collagen matrix (CM) achieve mechanical and volumetric stability; nevertheless, cross-linking may compromise biocompatibility. The aim of the present study was to investigate two different three-dimensional (3D) porcine-derived CMs, non-crosslinked (ncl)_CM and crosslinked (cl)_CM, for their effects on

An accurate benchtop model was developed to mimic the different forms of human upper airway collapse in adult sleep apnea patients. This was done via modeling the airway through digital imaging. Airway representative models were then produced in two steps via a customized pneumatic extrusion 3D printing system. This allowed the pressure of collapse and planes of collapse to be manipulated to accurately

Additive manufacturing techniques have evolved novel opportunities for the fabrication of highly porous composite scaffolds with well‐controlled and interconnected pore structures which is notably important for tissue engineering. In this work, poly (ε‐caprolactone) (PCL)‐based composite scaffolds (average pore diameter of 450 μm and strut thickness of 400 μm) reinforced with 10 vol% bioactive glass

Understanding the cellular and molecular toxicity of graphene and its derivatives is essential for their biomedical applications. Herein, gene expression profile of graphene‐exposed cells was retrieved from the Gene expression omnibus database. Differentially expressed genes and their functional roles were then investigated through the pathway, protein–protein interaction (PPI) network, and module

This study aimed to investigate the effects of laminin (LN) located in the basal lamina, which are important components of the peripheral nervous system‐extracellular matrix, on axon regeneration and remyelination. Nerve acellular scaffolds (NASs) (S‐untreated) were prepared using the acellular technique. The active component LN in the NASs was blocked (S‐LN−) or upregulated (S‐LN+); S‐LN+ contained

This review focuses on the characteristics and applications of biomaterials through the ages, ranging from the prehistoric times to the beginning of the era of modern medicine, which has been arbitrarily set to the middle of the 19th century, when aseptic procedures, antiseptic substances and modern anesthetics were developed. After a brief discussion on the definition of “biomaterial” from an historical

Due to the excellent restoration of masticatory function, satisfaction on aesthetics and other superiorities, dental implants represent an effective method to resolve tooth losing and damaging. Current dental implant systems still have problems waiting to be addressed, and problems are centralized on the materials of implant bodies. This review aims to summarize major developments in the field of dental

Bone is a self‐engineered structural component of the human body with multifaceted mechanical strength, which provides indomitable support to the effective functioning of the human body. It is indispensable to find a suitable biomaterial for substituting the bone as the bone substitute material requirement is very high due to the rate of bone fracture and infection lead to osteoporosis in human beings

We developed a composite hydrogel based on chitosan and carboxymethyl cellulose with nanometric hydroxyapatite (nHA) as filler (ranging from 0.5 to 5%), by ultrasonic methodology to be used for bone regeneration. The 3D porous‐structure of the biocomposite scaffolds were confirmed by Scanning Electron Microscopy and Microtomography analysis. Infrared analysis did not show specific interactions between

A proper biological microenvironment conducive to tissue repair and regeneration, while the bio‐implant interface directly affects the local microenvironment. In this study, to improve the biological microenvironment, a nano‐sized tantalum boride (Ta‐B) was coated on a titanium alloy substrate (Ti6Al4V, TC4) using magnetron co‐sputtering. The sample surface was characterized by X‐ray diffraction (XRD)

The interaction between osteogenic and angiogenic cells through a coculturing system in biocompatible materials has been considered for successfully engineering vascularized bone tissue equivalents. In this study, we developed a hydrogel‐blended scaffold consisted of gelatin methacryloyl (GelMA) and alginate enriched with hydroxyapatite nanoparticles (HAP) to model an in vitro prevascularized bone

Biodegradable membranes for cartilage applications were manufactured starting from polymeric networks of a lactose‐modified chitosan (CTL), previously proposed for chondrocytes stimulation. This implantable biomaterial was conceived as a reservoir of a bioactive polymer that could promote the activity of chondrocytes and the healing of cartilage defects. Freeze‐drying of reticulated hydrogels enabled

The oral delivery of macromolecular therapeutics to the intestinal tract requires novel, robust, and controlled formulations. Here, we report on fabrication by molding of composite hydrogel cylinders made of cellulose nanocrystals (CNCs) and chitosan (Cht) and their performance as delivery vehicles. CNCs provide excellent mechanical and chemical stress resistance, whereas Cht allows scaffold degradation

Magnetic nanoparticles of ε‐Fe1.76Ga0.24O3 with the volume‐weighted mean size of 17 nm were prepared by thermal treatment of a mesoporous silica template impregnated with metal nitrates and were coated with silica shell of four different thicknesses in the range 6–24 nm. The bare particles exhibited higher magnetization than the undoped compound, 22.4 Am2 kg−1 at 300 K, and were characterized by blocked

Cerium dioxide nanoparticles (CeO2NPs) with a high value of ζ‐potential (≥ 30 mV) have been synthesized in reverse microemulsions and they are able to form the high‐stable aqueous suspension without any additional stabilizers. It has been shown that the interaction of such CeO2 NPs with transport proteins, such as BSA, affects their molecular conformation and biochemical activity. The observed changes

Chronic inflammation and infection in the tissue surrounding implants after total joint replacement are closely associated with the innate immune response to surgical implants. Wear particles are known to increase apoptosis and impair the innate immunity in macrophages, which can cause immunosuppression around the implants. Excessive autophagy can induce apoptosis. However, the link between autophagy

As an emerging technology, intestinal organoids are promising new tools for basic and translational research in gastroenterology. Currently, culture of intestinal organoids relies mostly on a type of tumor‐derived scaffolds, namely Matrigel, which may pose tumorigenic risks to organoid implantation. Apart from the traditional detection methods, such as tissue slicing and fluorescence staining, the

Exosomes have been widely applied to the delivery of RNA and small molecules currently. However, the low targeting and specificity greatly limited the effect of exosome delivery. Here we designed an exosome that can perform the targeted delivery of two different types of RNA. Based on the mesenchymal stem cells (MSCs) derived exosomes, the RNA delivery system of targeted dendritic cells (DC‐Exosome)

The extracellular matrix (ECM) provides cells with a support structure and an attachment site in actual substrate. Its biochemical and surface properties play an important role in and have significant impact on cell attachment, proliferation, migration, differentiation, and gene expression. Leveraging the hydrophilicity and neuroprotective of Gastrodin, a Gastrodin/polyurethane (PU) elastomer was developed

The present study sought to design a multi‐functional fusion peptide with hydroxyapatite (HA) binding domain (HABD) and heparin binding domain (HBD).

The generation of a transplantable liver scaffold is crucial for the treatment of end‐stage liver failure. Unfortunately, decellularized liver scaffolds suffer from lack of bioactive molecules and functionality. In this study, we conjugated homogenized liver‐ extracellular matrix (ECM) into a decellularized liver in a rat model to improve its structural and functional properties. The homogenized ECM

Calcium phosphate (BCP) ceramic is a promising material in bone regeneration because it was proved biocompatible, osteoconductive, osteoinductive, and effective. Although it manifests favorable characteristics in critical-sized bone defects repair, the mechanism of its osteoinduction is still unclear. In the present study, we studied the mechanism of ectopic bone formation, with interest in the Notch

Maintenance of the pluripotent state of mesenchymal stem cells (MSCs) during in vitro expansion is an important factor for the successful proliferation of MSCs possessing high differentiation capacity. However, the differentiation potential of MSCs can easily be lost during in vitro expansion, particularly at late passages. Reactive oxygen species (ROS) are signaling molecules that help to maintain

Electrospun scaffolds are emerging as extracellular matrix (ECM)mimicking structures for tissue engineering thanks to their nanofibrous architecture. For the development of suitable electrospun scaffolds for bone tissue engineering, the addition of inorganic components has been implemented with the aim to confer important bioactivity like osteoinduction, osteointegration, and cell adhesion to the scaffolds

Bacterial cellulose (BC) membranes display special properties and structures, thus attracting much attention in application in the biomedical areas, for example, as implants for bone or cartilage tissue engineering, as substitutes for skin repairing, and as supports for controlled drug delivery. However, native BC lacks the activity to inhibit bacteria growth on its surface, which limits its applications

Self-healing injectable hydrogel biomaterials uniquely enable precise therapeutic deposition and deployment at specific bodily locations through versatile and minimally invasive processes that can preserve cargo integrity and cell viability. Despite the distinct advantages that injectable hydrogels offer in tissue engineering and therapeutic delivery, exceptionally few have been created using components

To guide the natural bone regeneration process, bone tissue engineering strategies rely on the development of a scaffold architecture that mimics the extracellular matrix and incorporates important extracellular signaling molecules, which promote fracture healing and bone formation pathways. Incorporation of growth factors into particles embedded within the scaffold can offer both protection of protein

Acute traumatic nail injury treatment repair procedures are commonly conducted in emergency departments and primary care offices. Current repair methods use nail splints that are inserted within the nail root to prevent the fusion of the proximal nail fold and the matrix tissue. Splints provide a protective barrier overlying the nail bed soft tissue during recovery periods, but uncertain prognoses

While highly porous biodegradable sponges have typically been used as tissue engineering scaffolds, they could be applicable in settings requiring drug delivery. Since most drug delivery devices are intentionally solid, nonporous polymers, a detailed structure-function relationship of delivery from a porous degradable sponges would allow researchers to develop such devices for either delivery alone

Even though drug-eluting stent (DES) has prominently reduced restenosis, however, its complication of delayed endothelialization has caused chronic side effect. A coating of ginseng-based biodegradable polymer could address this issue due to its specific therapeutic values. However, deposition of this type of stable coating on metallic implant often scarce. Therefore, in this study, different polyaniline

In pursuit of a preventive therapeutic for maternal autoantibody-related (MAR) autism, we assessed the toxicity, biodistribution, and clearance of a MAR specific peptide-functionalized dextran iron oxide nanoparticle system in pregnant murine dams. We previously synthesized ~15 nm citrate-coated dextran iron oxide nanoparticles (DIONPs), surface-modified with polyethylene glycol and MAR peptides to

Cardiac tissue engineering, a fairly new concept in cardiovascular research, could substantially improve our success in both in vitro modeling of cardiac microtissue and in vivo cardiac regenerative medicine. To a large extent, this success was attributed to mechanical as well as electrical properties of cardiac-designated biomaterials which inherit the fundamental characteristics of a native myocardial

Early implant loading is very important for reducing the duration of missing teeth in human patients. The laminin-derived peptide, DLTIDDSYWYRI motif (Ln2-P3), accelerates bone healing. Therefore, to investigate the hypothesis that Ln2-P3 increases the bone response to sandblasted, large-grit, acid-etched (SLA) titanium implants, the effect of the Ln2-P3 peptide on the osseointegration of SLA titanium

Control of cells behavior through topography of substrates is an important theme in biomedical applications. Among many materials used as substrates, polymers show advantages since they can be tailored by chemical functionalization. Fabrication of polymer substrates with nano- and microscale topography requires processing by lithography, microprinting, etching, and so forth. In this work, we introduce

Our aims were to 1) evaluate the capacity of hollow hydroxyapatite (HA) microspheres (212-250 μm) to serve as a delivery system for controlled release of BMP-2 in vitro and 2) examine relaxin as an enhancer of BMP-2 for bone regeneration. Hollow HA microspheres were converted from borate glass microspheres and characterized using X-ray diffraction, Fourier-transform infrared spectroscopy, scanning

Three-dimensional (3D) biomimetic cell culture platforms offer more realistic microenvironments that cells naturally experience in vivo. We developed a tunable hyaluronan-based hydrogels that could easily be modified to mimic healthy or malignant extracellular matrices (ECMs). For that, we pre-functionalized our hydrogels with an adhesive polypeptide (poly-l-lysine, PLL) or ECM proteins (type III and

This study evaluated the ability of bisphosphonates (BPAs) of different molecular structures to mitigate the calcification of porcine aortic wall (PAW) and bovine jugular vein wall (BJVW). Tissues cross‐linked with glutaraldehyde (GA) or diepoxy compound (DE) were modified with pamidronic (PAM), alendronic (ALE), neridronic (NER) acids (Type 1 BPAs); 2‐(2'‐carboxyethylamino)ethylidene‐1,1‐bisphosphonic

Synthetic grafts do not provide an appealing surface for endothelial cells to adhere and colonize the inner surface. To promote in situ endothelialisation the following aspect has to be taken into account, endothelial progenitor cells (EPCs) needs to be mobilized on the surface of the graft. The surface of the graft has to be sufficiently biocompatible to create a prone environment for the EPCs to

Short oligomeric peptides typically do not exhibit the entanglements required for the formation of nanofibers via electrospinning. In this study, the synthesis of nanofibers composed of tyrosine-based dipeptides via electrospinning, has been demonstrated. The morphology, mechanical stiffness, biocompatibility, and stability under physiological conditions of such biodegradable nanofibers were characterized

Arginine-glycine-aspartic acid (RGD) peptide family is known as the most prominent ligand for extracellular domain of integrin receptors. Specific expression of these receptors in various tissue of human body and tight association of their expression profile with various pathophysiological conditions made these receptors a suitable targeting candidate for several disease diagnosis and treatment as