What is liposome drug delivery?

Abstract. Liposomes are a novel drug delivery system (NDDS), they are vesicular structures consisting of bilalyers which form spontaneously when phospholipids are dispersed in water. They are microscopic vesicles in which an aqueous volume is entirely enclosed by a membrane composed of lipid bilayers.

How liposomes can facilitate drug delivery?

Liposomes are defined as phospholipid vesicles consisting of one or more concentric lipid bilayers enclosing discrete aqueous spaces. The unique ability of liposomal systems to entrap both lipophilic and hydrophilic compounds enables a diverse range of drugs to be encapsulated by these vesicles.

How are liposomes administered?

Liposome-entrapped drugs are distributed within the body much differently than free drugs; when administered intravenously to healthy animals and humans, most of the injected vesicles accumulate in the liver, spleen, lungs, bone marrow, and lymph nodes.

How are drugs loaded into liposomes?

In general, liposomal drug loading is achieved by either passive or active methods (9, 19–22). Passive loading involves dissolution of dried lipid films in aqueous solutions containing the drug of interest. This approach can only be used for water-soluble drugs, and the efficiency of loading is often low.

What are liposomes used for?

A liposome is a tiny bubble (vesicle), made out of the same material as a cell membrane. Liposomes can be filled with drugs, and used to deliver drugs for cancer and other diseases. Membranes are usually made of phospholipids, which are molecules that have a head group and a tail group.

What are liposomes in pharmacy?

What is a liposome injection?

It is a local anesthetic that prevents pain by blocking signals at the nerve endings directly at the surgical area (local analgesia) or by blocking nerve endings (regional analgesia) of the brachial plexus (nerves that conduct signals to the shoulder, arm, and hand).

What is liposomal injection?

(LY-poh-SOH-mul) A drug preparation that contains the active drug inside very tiny, fat-like particles. This form is easier for the body to absorb and allows more drug to get to the target area of the body, such as a tumor. Liposomal drugs may have fewer side effects and work better than other forms of the drug.