نتایج جستجو برای: microcapsules

تعداد نتایج: 2200  

2012
Bahareh Sayyar Megan Dodd Jianping Wen Shirley Ma Leah Marquez-Curtis Anna Janowska-Wieczorek Gonzalo Hortelano

Cell microencapsulation holds significant promise as a strategy for cellular therapies; however, inadequate survival and functionality of the enclosed cells limit its application in hemophilia treatment. Here, we evaluated the use of alginate-based microcapsules to enhance the viability and transgene secretion of human cord blood-derived mesenchymal stem cells in three-dimensional cultures. Giv...

2010
Simi SP Sankar C Krishnan PN Dilip C Ameena

The present study was aimed to develop and evaluate Albendazole microcapsules using guar gum, a natural polymer for colon-specific delivery for better treatment of Helminthiasis, Filariasis, and colorectal cancer by avoiding the side effects. Microcapsules were prepared by the use of different concentrations of sodium alginate and guar gum. The polysaccharides guar gum reacted with sodium algin...

2012
Furquan Nazimuddin Khan Mohamed Hassan G. Dehghan

Atorvastatin calcium, a lipid-lowering drug, is much less bioavailable because of reduced solubility in acidic media. Multiple-unit floating microcapsules of Atorvastatin calcium (ATC) were developed to expand the gastric residence time of the drug, as ATC has maximum rate of absorption in the upper GI tract. Floating microcapsules were prepared by Emulsion-solvent evaporation technique through...

2016
Sijing Yan Min LU Xiaoya Ding Fei Chen Xuemei He Chunyan Xu Hang Zhou Qi Wang Lan Hao Jianzhong Zou

This study is to prepare a hematoporphyrin monomethyl ether (HMME)-loaded poly(lactic-co-glycolic acid) (PLGA) microcapsules (HMME/PLGA), which could not only function as efficient contrast agent for ultrasound (US)/photoacoustic (PA) imaging, but also as a synergistic agent for high intensity focused ultrasound (HIFU) ablation. Sonosensitizer HMME nanoparticles were integrated into PLGA microc...

Journal: :Colloids and surfaces. B, Biointerfaces 2011
Cornelia Theresa Brunner Erkan Türker Baran Elisabete Duarte Pinho Rui Luís Reis Nuno Meleiro Neves

Poly(butylene succinate) (PBSu), poly(butylene succinate-co-adipate) (PBSA) and poly(butylene terephthalate-co-adipate) (PBTA) microcapsules were prepared by the double emulsion/solvent evaporation method. The effect of polymer and poly(vinyl alcohol) (PVA) concentration on the microcapsule morphologies, drug encapsulation efficiency (EE) and drug loading (DL) of bovine serum albumin (BSA) and ...

2012
Byeong-Il Kim Soon Woo Jeong Kyoung G. Lee Taejung Park Jung Youn Park Jae Jun Song Seok Jae Lee Chang-Soo Lee

Bioactive microcapsules containing Bacillus thuringiensis (BT) spores were generated by a combination of a hydro gel, microfluidic device and chemical polymerization method. As a proof-of-principle, we used BT spores displaying enhanced green fluorescent protein (EGFP) on the spore surface to spatially direct the EGFP-presenting spores within microcapsules. BT spore-encapsulated microdroplets o...

Journal: :Anesthesiology 2002
Kathrine Holte Mads U Werner Peter G Lacouture Henrik Kehlet

BACKGROUND The addition of small amounts of dexamethasone to extended-release formulations of bupivacaine in microcapsules has been found to prolong local analgesia in experimental studies, but no clinical data are available. METHODS In a double-blinded study, 12 healthy male volunteers were randomized to receive simultaneous subcutaneous injections of bupivacaine microcapsules with dexametha...

2007
Vladimir Privman Igor Sokolov

In recent years there has been increasing interest in designing “smart materials,” specifically, self-healing composites1–9 that can restore their mechanical properties with time or at least reduce deterioration caused by development of microcracks. One of the popular approaches1 7–9 has been to use microcapsules broken by developing microcracks and releasing “glue” material into the damaged ma...

Butyl stearate as a phase change material was microencapsulated within melamine-formaldehyde resin using emulsion polymerization. Morphology and thermal specification of produced microcapsules were studied by Fourier transform infrared spectroscopy, FT-IR, scanning electron microscopy, SEM, and Differential scanning calorimetry analysis, DSC. FT-IR spectra validated the existence of the butyl s...

2010
MD. Sarfaraz D. Hiremath K. P. R. Chowdary

Rifampicin biodegradable microcapsules were prepared by feasible emulsification-ionic gelation method for a novel controlled release product. Sodium alginate and Carbopol 974P were used as coating polymers in different ratios 1:1, 1:2, 1:3 and 1:4 to obtain elegant microcapsules. The formulations were characterized for encapsulation efficiency, drug loading, sieve analysis, scanning electron mi...

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