What is PLGA?
PLGA are a family of FDA-approved biodegradable polymers that are physically strong and highly biocompatible and have been extensively studied as delivery vehicles for drugs, proteins and various other macromolecules such as DNA, RNA and peptides [1–3].
What is PLA and PLGA?
PLA and PGLA are thermoplastic polymer materials. The key difference between PLA and PLGA is that PLA is polylactic acid which is synthesized via condensation reaction of lactic acid whereas PLGA is poly(lactic-co-glycolic acid) which is synthesized via copolymerization of glycolic acid and lactic acid.
What is poly DL lactide?
Poly(DL-lactide-co-caprolactone) (PLA-PCL) is a biodegradable block copolymer that may be used as monofilament sutures and nanoparticle-based drug delivery systems.
Why does PLGA degrade faster than PGA?
At same molecular weight level, PLGA with 50:50 ratio of LA and GA has fastest degradation across the spectrum of PLGA including PLA and PGA. As lactic acid content increases in PLGA, its degradation time increases.
What is the density of PLGA?
PLGA
| PLGA structure | Common Name | PLGA |
|---|---|---|
| CAS Number | 34346-01-5 | |
| Density | 1.53 g/mL at 25 °C(lit.) | |
| Molecular Formula | (C3H6O3)n.(C2H4O3)n | |
| MSDS | N/A |
What is PLGA scaffold?
Poly(lactide-co-glycolide) (PLGA) is a synthetic linear copolymer approved by the USFDA. It provides versatile biodegradable interventions such as 3D scaffolds for tissue engineering. PLGA systems are biocompatible and can be surface modified for intracellular interactions.
How much does Plga cost?
PLGA (Synonyms: poly(lactic-co-glycolic acid))
| Size | Price | Stock |
|---|---|---|
| 500 mg | USD 65 | In-stock |
| 1 g | USD 110 | In-stock |
| 5 g | Get quote | |
| 10 g | Get quote |
Is PLGA amorphous?
Although GA glycolic acid lacks the methyl side group (in contrast to LA), making it highly crystalline, PLGA copolymers are amorphous.
How does PLGA break down?
PLGA degrades by hydrolysis of its ester linkages, through bulk or heterogeneous erosion, in aqueous environments.
How much does PLGA cost?
What type of polymer is PLGA?
PLGA is a biocompatible and biodegradable linear co-polymer that can be prepared at different ratios between its constituent monomers lactic and glycolic acid (Fig. 1). PLGA of low molecular weight (below 10 kDa) can be obtained by a ring-opening co-polymerization of lactic and glycolic acid.
Why is PLGA used for drug delivery?
PLGA is the most successful and most characterized polymer for controlled release drug delivery systems. It is favored because of its biocompatibility, biodegradability and mechanical strength and continues to be used to develop new controlled release systems.
Is PLGA synthetic?
The most commonly used biodegradable synthetic polymers for three-dimensional (3D) scaffolds in tissue engineering are saturated poly(α-hydroxy esters), including poly(lactic acid) (PLA) and poly(glycolic acid) (PGA), as well as poly(lactic-co-glycolide) (PLGA) copolymers [11,12].
Is PLGA porous?
For example, implantable porous scaffolds developed from PLGA microspheres can be fabricated at 49 °C, with porosity levels ranging from 66 to 74% [29].
Why is PLGA used?
As described, PLGA is an FDA-approved elastomeric copolymers for drug delivery owing to its biodegradability, biocompatibility, mechanical properties and ease of processing. It has been used in the production of a variety of vascular tissue–engineering devices, such as grafts and prosthetic devices.
Is PLGA hydrophilic polymer?
PLGA is relatively hydrophobic, necessitating the use of organic solvents for formulation [18]. It is soluble in numerous organic solvents including tetrahydrofuran, chlorinated solvents, acetone or ethyl acetate [24].
How is PLGA polymer made?
PLGA is synthesized by means of ring-opening co-polymerization of two different monomers, the cyclic dimers (1,4-dioxane-2,5-diones) of glycolic acid and lactic acid. Polymers can be synthesized as either random or block copolymers thereby imparting additional polymer properties.
What is a PLGA nanoparticle?
Poly (lactic-co-glycolic acid) (PLGA) is one of the most effective biodegradable polymeric nanoparticles (NPs). It has been approved by the US FDA to use in drug delivery systems due to controlled and sustained- release properties, low toxicity, and biocompatibility with tissue and cells.
What is the Tg of PLGA copolymer?
The Tg (glass transition temperature) of the PLGA copolymers are reported to be above the physiological temperature of 37 °C and hence are glassy in nature, thus exhibiting fairly rigid chain structure.
Is PLGA toxic to humans?
Toxicological studies with PLGA devices suggest that local tissue reactions at the site of application may occur [93,94]. Although these reactions are generally mild and PLGA has been shown to be extremely safe as a material for macroscopic and microparticle systems, unique considerations may arise when using nanoscale applications.
What is intrinsic viscosity of PLGA polymers?
Commercially available PLGA polymers are usually characterized in terms of intrinsic viscosity, which is directly related to their molecular weights. Open in a separate window Figure 1
What is PLGA and why is it important?
PLGA is biocompatible and biodegradable, exhibits a wide range of erosion times, has tunable mechanical properties and most importantly, is a FDA approved polymer.