scholarly journals Double-layered microsphere based dual growth factor delivery system for guided bone regeneration

RSC Advances ◽  
2018 ◽  
Vol 8 (30) ◽  
pp. 16503-16512 ◽  
Author(s):  
Chun Xu ◽  
Jia Xu ◽  
Lan Xiao ◽  
Zhihao Li ◽  
Yin Xiao ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Tissue Engineering ◽  
Growth Factor ◽  
Bone Regeneration ◽  
Delivery System ◽  
Drug Delivery Systems ◽  
Guided Bone Regeneration ◽  
Delivery Systems ◽  
Growth Factor Delivery ◽  
Dual Growth Factor Delivery

Microsphere based drug delivery systems show great advantages for tissue engineering.

Non-mulberry silk fibroin grafted poly(ε-caprolactone) nanofibrous scaffolds mineralized by electrodeposition: an optimal delivery system for growth factors to enhance bone regeneration

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 26835-26855 ◽  
Author(s):  
Promita Bhattacharjee ◽  
Deboki Naskar ◽  
Tapas K. Maiti ◽  
Debasis Bhattacharya ◽  
Subhas C. Kundu
Keyword(s):  
Growth Factors ◽  
Growth Factor ◽  
Bone Regeneration ◽  
Silk Fibroin ◽  
Delivery System ◽  
Growth Factor Delivery ◽  
Nanofibrous Scaffolds ◽  
Dual Growth Factor Delivery ◽  
Delivery Medium

Nanofibrous PCL matrix with non-mulberry silk fibroin grafting and electrodeposited nHAp was used successfully as dual growth factor delivery medium for in vitro osteogenesis.

scholarly journals Mesoporous bioactive glasses: structure characteristics, drug/growth factor delivery and bone regeneration application

2012 ◽  
Vol 2 (3) ◽  
pp. 292-306 ◽  
Author(s):  
Chengtie Wu ◽  
Jiang Chang
Keyword(s):  
Drug Delivery ◽  
Tissue Engineering ◽  
Growth Factor ◽  
Bone Tissue Engineering ◽  
Bone Regeneration ◽  
Bone Tissue ◽  
Growth Factor Delivery ◽  
Bioactive Glasses ◽  
The Past

The impact of bone diseases and trauma in the whole world has increased significantly in the past decades. Bioactive glasses are regarded as an important bone regeneration material owing to their generally excellent osteoconductivity and osteostimulativity. A new class of bioactive glass, referred to as mesoporous bioglass (MBG), was developed 7 years ago, which possess a highly ordered mesoporous channel structure and a highly specific surface area. The study of MBG for drug/growth factor delivery and bone tissue engineering has grown significantly in the past several years. In this article, we review the recent advances of MBG materials, including the preparation of different forms of MBG, composition–structure relationship, efficient drug/growth factor delivery and bone tissue engineering application. By summarizing our recent research, the interaction of MBG scaffolds with bone-forming cells, the effect of drug/growth factor delivery on proliferation and differentiation of tissue cells and the in vivo osteogenesis of MBG scaffolds are highlighted. The advantages and limitations of MBG for drug delivery and bone tissue engineering have been compared with microsize bioactive glasses and nanosize bioactive glasses. The future perspective of MBG is discussed for bone regeneration application by combining drug delivery with bone tissue engineering and investigating the in vivo osteogenesis mechanism in large animal models.

scholarly journals Natural rubber latex used as drug delivery system in guided bone regeneration (GBR)

2009 ◽  
Vol 12 (2) ◽  
pp. 253-256 ◽  
Author(s):  
Rondinelli Donizetti Herculano ◽  
Cecília Pereira Silva ◽  
Cibele Ereno ◽  
Sérgio Augusto Catanzaro Guimaraes ◽  
Angela Kinoshita ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Natural Rubber ◽  
Bone Regeneration ◽  
Drug Delivery System ◽  
Delivery System ◽  
Natural Rubber Latex ◽  
Guided Bone Regeneration ◽  
Rubber Latex

Collagen Nanoparticles in Drug Delivery Systems and Tissue Engineering

2021 ◽  
Vol 11 (23) ◽  
pp. 11369
Author(s):  
Ashni Arun ◽  
Pratyusha Malrautu ◽  
Anindita Laha ◽  
Hongrong Luo ◽  
Seeram Ramakrishna
Keyword(s):  
Drug Delivery ◽  
Tissue Engineering ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Drug Solubility ◽  
Stimuli Responsive ◽  
Preparation Methods ◽  
Nanoparticle Preparation ◽  
Responsive Behavior ◽  
Reduced Toxicity

The versatile natural polymer, collagen, has gained vast attention in biomedicine. Due to its biocompatibility, biodegradability, weak antigenicity, biomimetics and well-known safety profile, it is widely used as a drug, protein and gene carrier, and as a scaffold matrix in tissue engineering. Nanoparticles develop favorable chemical and physical properties such as increased drug half-life, improved hydrophobic drug solubility and controlled and targeted drug release. Their reduced toxicity, controllable characteristics of scaffolds and stimuli-responsive behavior make them suitable in regenerative medicine and tissue engineering. Collagen associates and absorbs nanoparticles leading to significant impacts on their biological functioning in any biofluid. This review will discuss collagen nanoparticle preparation methods and their applications and developments in drug delivery systems and tissue engineering.

A Review on Formulation and Development of Solid Self-Nano Emulsifying Drug Delivery Systems

2021 ◽  
Vol 14 (4) ◽  
pp. 5519-5228
Author(s):  
Sunitha M Reddy ◽  
Sravani Baskarla
Keyword(s):  
Drug Delivery ◽  
Dissolution Rate ◽  
Drug Delivery System ◽  
Delivery System ◽  
Drug Delivery Systems ◽  
Water Solubility ◽  
Drug Loading ◽  
Aqueous Solubility ◽  
Delivery Systems ◽  
Particle Size Reduction

This article describes current strategies to enhance aqueous solubility and dissolution rate of poor soluble drugs. Most drugs in the market are lipophilic with low or poor water solubility. There are various methods to enhance solubility: co-solvency, particle size reduction, salt formation and Self Nanoemulsifying drug delivery systems, SEDDS is a novel approach to enhance solubility, dissolution rate and bioavailability of drugs. The study involves formulation and evaluation of solid self-Nano emulsifying drug delivery system (S-SNEDDS) to enhance aqueous solubility and dissolution rate. Oral route is the most convenient route for non-invasive administration. S-SNEDDS has more advantages when compared to the liquid self-emulsifying drug delivery system. Excipients were selected depends upon the drug compatibility oils, surfactants and co surfactants were selected to formulate Liquid SNEDDS these formulated liquid self-nano emulsifying drug delivery system converted into solid by the help of porous carriers, Melted binder or with the help of drying process. Conversion process of liquid to solid involves various techniques; they are spray drying; freeze drying and fluid bed coating technique; extrusion, melting granulation technique. Liquid SNEDDS has a high ability to improve dissolution and solubility of drugs but it also has disadvantages like incompatibility, decreased drug loading, shorter shelf life, ease of manufacturing and ability to deliver peptides that are prone to enzymatic hydrolysis.  

scholarly journals MICROSPONGES AS A NEOTERIC CORNUCOPIA FOR DRUG DELIVERY SYSTEMS

2019 ◽  
pp. 4-12
Author(s):  
SARIPILLI RAJESWARI ◽  
VANAPALLI SWAPNA
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
Drug Delivery Systems ◽  
Active Agent ◽  
Delivery Systems ◽  
Oral Dosage ◽  
Spherical Particles ◽  
Porous Microspheres ◽  
Oral Dosage Forms

Microsponges (MSPs) are at the forefront of the rapidly developing field of novel drug delivery systems which are gaining popularity due to their use for controlled release and targeted drug delivery. The microsponge delivery system (MDS) is a patented polymeric system consisting of porous microspheres typically 10-25 microns in diameter, loaded with an active agent. They are tiny sponge-like spherical particles that consist of a myriad of interconnecting voids within a non-collapsible structure with a large porous surface through which active ingredient is released in a controlled manner. Microsponge also hold a certification as one of the potential approaches for gastric retention where many oral dosage forms face several physiological restrictions due to non-uniform absorption pattern, inadequate medication release and shorter residence time in the stomach. This type of drug delivery system which is non-irritating, non-allergic, non-toxic, can suspend or entrap a wide variety of substances, and can then be incorporated into a formulated product such as gel, cream, liquid or powder that is why it is called as a “versatile drug delivery system”. It overcomes the drawbacks of other formulations such as frequency of dosing, drug reaction, incompatibility with environmental condition. These porous microspheres were exclusively designed for chronotherapeutic topical drug delivery but attempt to utilize them for oral, pulmonary and parenteral drug delivery were also made. The present review elaborates about the multifunctional microsponge technology including its preparation, characterization, evaluation methods along with recent research and future potential.

scholarly journals Environment Responsive Metal–Organic Frameworks as Drug Delivery System for Tumor Therapy

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Chao Yan ◽  
Yue Jin ◽  
Chuanxiang Zhao
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
Drug Delivery Systems ◽  
Tumor Therapy ◽  
Metal Organic Frameworks ◽  
Delivery Systems ◽  
Drug Uptake ◽  
High Concentration ◽  
Metal Organic

AbstractNanoparticles as drug delivery systems can alter the drugs' hydrophilicity to affect drug uptake and efflux in tissues. They prevent drugs from non-specifically binding with bio-macromolecules and enhance drug accumulation at the lesion sites, improving therapy effects and reducing unnecessary side effects. Metal–organic frameworks (MOFs), the typical nanoparticles, a class of crystalline porous materials via self-assembled organic linkers and metal ions, exhibit excellent biodegradability, pore shape and sizes, and finely tunable chemical composition. MOFs have a rigid molecular structure, and tunable pore size can improve the encapsulation drug's stability under harsh conditions. Besides, the surface of MOFs can be modified with small-molecule ligands and biomolecule, and binding with the biomarkers which is overexpressed on the surface of cancer cells. MOFs formulations for therapeutic have been developed to effectively respond to the unique tumor microenvironment (TEM), such as high H2O2 levels, hypoxia, and high concentration glutathione (GSH). Thus, MOFs as a drug delivery system should avoid drugs leaking during blood circulation and releasing at the lesion sites via a controlling manner. In this article, we will summary environment responsive MOFs as drug delivery systems for tumor therapy under different stimuli.

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