نتایج جستجو برای: pdlla خالص

تعداد نتایج: 13465  

2012
David A Back Stephan Pauly Lisa Rommel Norbert P Haas Gerhard Schmidmaier Britt Wildemann Stefan H Greiner

BACKGROUND An implant coating with poly(D, L-lactide) (PDLLA) releasing incorporated zoledronic acid (ZOL) has already proven to positively effect osteoblasts, to inhibit osteoclasts and to accelerate fracture healing. Aim of this study was to investigate the release kinetics of the chosen coating and the effect of different concentrations of ZOL locally released from this coating on the osseoi...

2014
Jae-Young Lee Jung Sun Kim Hyun-Jong Cho Dae-Duk Kim

Poly(styrene)-b-poly(DL-lactide) (PS-PDLLA) copolymer-based nanoparticles (NPs) of a narrow size distribution, negative zeta potential, and spherical shape were fabricated for the delivery of docetaxel (DCT). The particle size was consistently maintained in serum for 24 hours and a sustained drug release pattern was observed for 10 days in the tested formulations. The cytotoxicity of the develo...

Journal: :Acta orthopaedica 2008
Stefan H Greiner Britt Wildemann David A Back Mahtala Alidoust Philipp Schwabe Norbert P Haas Gerhard Schmidmaier

BACKGROUND AND PURPOSE Zoledronic acid (ZOL) has been shown in vitro and in vivo to inhibit osteoclastic activity and to regulate osteoblasts. Its antiresorptive effect is used clinically in the treatment of bone-consuming pathologies to prevent skeletal complications. Because of its effect on bone cells, there might be a possible benefit in treatment of fractures by local application from a bi...

Journal: :Journal of Materials Science: Materials in Medicine 2021

Abstract Electrospun fibrous scaffolds capable of providing dual growth factor delivery in a controlled manner have distinctive advantages for tissue engineering. In this study, we investigated the formation, structure, and characteristics/properties bicomponent glial cell line-derived neurotrophic (GDNF) nerve (NGF) peripheral regeneration. GDNF NGF were incorporated into core-shell structured...

Journal: :The Journal of chemical physics 2013
Ainhoa Lejardi Aitziber Eleta López José R Sarasua U B Sleytr José L Toca-Herrera

Fabrication of novel bio-supramolecular structures was achieved by recrystallizing the bacterial surface protein SbpA on amorphous and semicrystalline polylactide derivatives. Differential scanning calorimetry showed that the glass transition temperature (T(g)) for (poly-L-lactide)-PLLA, poly(L,D-lactide)-PDLLA, poly(lactide-co-glycolide)-PLGA and poly(lactide-co-caprolactone)-PLCL was 63 °C, 5...

Journal: :European cells & materials 2014
A C van Leeuwen H Yuan G Passanisi J W van der Meer J D de Bruijn T G van Kooten D W Grijpma R R M Bos

In the treatment of orbital floor fractures, bone is ideally regenerated. The materials currently used for orbital floor reconstruction do not lead to the regeneration of bone. Our objective was to render polymeric materials based on poly(trimethylene carbonate) (PTMC) osteoinductive, and to evaluate their suitability for use in orbital floor reconstruction. For this purpose, osteoinductive bip...

2012
Chong Wang Min Wang

Electrospun tissue engineering scaffolds are attractive due to their distinctive advantages over other types of scaffolds. As both osteoinductivity and osteoconductivity play crucial roles in bone tissue engineering, scaffolds possessing both properties are desirable. In this investigation, novel bicomponent scaffolds were constructed via dual-source dual-power electrospinning (DSDPES). One sca...

Journal: :Journal of pharmaceutical sciences 2009
May P Xiong Jaime A Yáñez Glen S Kwon Neal M Davies M Laird Forrest

Tanespimycin (17-allylamino-17-demethoxygeldanamycin or 17-AAG) is a promising heat shock protein 90 inhibitor currently undergoing clinical trials for the treatment of cancer. Despite its selective mechanism of action on cancer cells, 17-AAG faces challenging issues due to its poor aqueous solubility, requiring formulation with Cremophor EL (CrEL) or ethanol (EtOH). Therefore, a CrEL-free form...

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