nanoparticles have been at the center of research focus as a new promising material for the treatment of cancer in recent years. although many chemotherapy drugs for cancer treatment are available, their potential toxicity is the main point of concern. on the other hand, the conventional chemotherapeutic approach has not been found to be very efficient in colorectal cancer (crc) as the drug mol...

The possible use of liposomes as topical drug delivery vehicles for both water- and lipid-soluble drugs has been investigated. Data for two characteristic drugs, penicillin G and indoxole, are presented. Liposome uptake by the cornea is greatest for positively charged liposomes, less for negatively charged liposomes, and least for neutral liposomes, suggesting that the initial interaction betwe...

The uptake of fluorescent-labeled liposomes (with a surfactant-like composition) by alveolar macrophages and alveolar type II cells was studied using flow cytometry, in vivo by instillation of the labeled liposomes in the trachea of ventilated rats followed by isolation of the alveolar cells and determination of the cell-associated fluorescence, and in vitro by incubation of isolated alveolar c...

BACKGROUND Inflammation plays an important role in many pathologies, including cardiovascular diseases, neurological conditions and oncology, and is considered an important predictor for disease progression and outcome. In vivo imaging of inflammatory cells will improve diagnosis and provide a read-out for therapy efficacy. Paramagnetic phosphatidylserine (PS)-containing liposomes were develope...

The changes in quantal transmitter release induced by egg phosphatidylcholine liposomes with different internal ionic composition were examined at the frog neuromuscular junction by using conventional electrophysiological techniques. It was found that liposomes containing calcium or sodium ions increase both evoked and spontaneous transmitter release, while liposomes containing potassium do not...

Sulfur mustard or mustard gas (HD) and its monofunctional analog, 2-chloroethyl ethyl sulfide (CEES), or "half-mustard gas," are alkylating agents that induce DNA damage, oxidative stress, and inflammation. HD/CEES are rapidly absorbed in the skin causing extensive injury. We hypothesize that antioxidant liposomes that deliver both water-soluble and lipid-soluble antioxidants protect skin cells...

BACKGROUND Folate receptor (FR)-targeted liposomes have been investigated as delivery vehicles for anticancer drugs. A novel lipophilic FR ligand, folate-glutathione-polyethyleneglycol-distearoyl phosphatidylethanolamine (F-GSH-PEG-DSPE), was synthesized, incorporated into liposomes and evaluated for FR targeting efficiency. These liposomes were then evaluated as carriers of the chemotherapy ag...

In this study a liposome cell labeling system was developed for non-target-specific labeling of glioma cells with superparamagnetic iron oxide nanoparticles for magnetic resonance imaging (MRI). A high non-target-specific uptake is ideal for in vitro labeling of cells and subsequently for cell tracking and visualization of phagocytic cells in vivo. The preparation of iron oxide-loaded liposomes...

To determine whether liposomes (microscopic phospholipid vesicles) may be useful in delivering drugs to a region of myocardial ischemia, we studied the concentration of positively charged and neutral liposomes containing 131I-albumin and horseradish peroxidase in ischemic myocardium of 20 dogs during the first 4 hours of experimental myocardial infarction. We studied the interaction of liposome...

This paper describes a method to reconstitute GPCRs into an array of giant liposomes in a buffer solution. We first achieved the formation of giant liposomes in a buffer solution by adding fructose to a lipid film; normally such giant liposomes are formed by using only pure waters (MilliQ). Moreover, we successfully reconstituted adrenergic receptors (AR) of GPCRs into the giant liposome array ...