Nanotechnology is a dynamic branch of science that transforms and manipulates substances on a molecular and even atomic level. Liposomes refer to microscopic cellular bubbles made of materials called phospholipids, which are similar to human cell material and are both attracted to and repelled by water. Liposomal formulation helps create these structures for use in the targeted delivery of medication.
First appearing during the 1960s, the importance of these tiny vesicular structures that enclose water-soluble molecules soon became apparent. Researchers and pharmacists became aware of their potential to deliver specific drugs used in the treatment of cancer and other serious diseases. The process encourages more accurate targeting of unhealthy cells and avoids problems associated with other types of administration.
Unlike most other delivery systems, these formulations do not rely on modes of absorption typical to oral or direct IV administration. Conventional delivery can make it harder to manage the effects of specialized drugs, and one common result is the accumulation of toxic materials in other organs, often causing additional and undesired damage. When the medication is placed inside each bubble-like liposome, release can be more easily controlled.
The drug molecules encased within each structure are suspended in water and surrounded by an artificially or naturally created membrane. The formulation of designed liposomes turns them into ideal mechanisms for hydrophilic drugs, or those that are attracted to and become suspended in water. When prepared according to current methods, the structures exist in two primary types, unilammelar or multilammelar. There are subcategories that include different sizes.
Individual liposomes surround the drug molecules with a membrane, and then transfer those medications to other cells when activated. Molecules can be released into the body by fusing certain layers with other physical cells, effectively delivering a small amount of medication. Others strategies rely on chemical reactions that encourage diffusion on a molecular level. The net result is a steadier, more controlled release.
Not only can this process be more easily managed by physicians, but it leaves no residual toxins behind, and is compatible biologically with human cells. Comparatively recent developments in ultrasound technology use sound waves to activate these chemical invaders, increasing their strength in regions where it is most needed. Others are being administered via the respiratory system, where they are deposited in the lungs and slowly released.
Manufacturing these tiny capsules for medical purposes is still expensive. As research continues and use becomes more widespread, costs will likely decrease, but will still remain substantial. Because the technology is still relatively new, many issues have yet been completely resolved. Some types of artificial cells have experienced problems with wall leakage, while others are still affected by natural degradation processes such as oxidation.
Like some other medical innovations, liposomes are now being introduced into consumer products. They are currently promoted as a beneficial way to administer herbal, vitamin and mineral supplements, and some individuals have created their own unique formulations. Although commercial applications produce controversy regarding efficacy, the continued development of new processes provides the basis for more effective medical uses.
First appearing during the 1960s, the importance of these tiny vesicular structures that enclose water-soluble molecules soon became apparent. Researchers and pharmacists became aware of their potential to deliver specific drugs used in the treatment of cancer and other serious diseases. The process encourages more accurate targeting of unhealthy cells and avoids problems associated with other types of administration.
Unlike most other delivery systems, these formulations do not rely on modes of absorption typical to oral or direct IV administration. Conventional delivery can make it harder to manage the effects of specialized drugs, and one common result is the accumulation of toxic materials in other organs, often causing additional and undesired damage. When the medication is placed inside each bubble-like liposome, release can be more easily controlled.
The drug molecules encased within each structure are suspended in water and surrounded by an artificially or naturally created membrane. The formulation of designed liposomes turns them into ideal mechanisms for hydrophilic drugs, or those that are attracted to and become suspended in water. When prepared according to current methods, the structures exist in two primary types, unilammelar or multilammelar. There are subcategories that include different sizes.
Individual liposomes surround the drug molecules with a membrane, and then transfer those medications to other cells when activated. Molecules can be released into the body by fusing certain layers with other physical cells, effectively delivering a small amount of medication. Others strategies rely on chemical reactions that encourage diffusion on a molecular level. The net result is a steadier, more controlled release.
Not only can this process be more easily managed by physicians, but it leaves no residual toxins behind, and is compatible biologically with human cells. Comparatively recent developments in ultrasound technology use sound waves to activate these chemical invaders, increasing their strength in regions where it is most needed. Others are being administered via the respiratory system, where they are deposited in the lungs and slowly released.
Manufacturing these tiny capsules for medical purposes is still expensive. As research continues and use becomes more widespread, costs will likely decrease, but will still remain substantial. Because the technology is still relatively new, many issues have yet been completely resolved. Some types of artificial cells have experienced problems with wall leakage, while others are still affected by natural degradation processes such as oxidation.
Like some other medical innovations, liposomes are now being introduced into consumer products. They are currently promoted as a beneficial way to administer herbal, vitamin and mineral supplements, and some individuals have created their own unique formulations. Although commercial applications produce controversy regarding efficacy, the continued development of new processes provides the basis for more effective medical uses.
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