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.
The significance of these vesicular containers containing soluble molecules first became apparent soon after they appeared during the 1960s. Pharmacists as well as researchers recognized their potential for safely and slowly administering specific pharmaceuticals important to treating cancer and other illnesses. The new method could target undesirable cells more efficiently, and had fewer side issues associated with some medications.
The concept they use is radically different because it does not depend of standard modes of absorption typical of IV or oral administration. Conventional chemical processes can make management of specialized drugs more difficult. They are indiscriminate in their toxicity, and affect healthy organs as well, resulting in unnecessary damage and more lengthy recovery. When delivered via liposomes, release of toxic medication can be better controlled.
The molecules of a drug are suspended in water within the structure of the artificial cell, which is surrounded by a manufactured membrane. The formulating process of specifically designed liposomes transforms them into mechanisms ideal for transporting hydrophilic drugs, or those that are attracted to water and dissolve effectively. Current methods produce two primary forms called unilammelar and multilammelar, and subcategories include varying 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.
It is still comparatively costly to manufacture these microscopic capsules. As practicality increases and research finds new uses and procedures, expenses will probably decrease, but still remain high. As is the case in most newer technologies, there are still many unresolved issues. Some forms of these artificial cells have had problems with wall or membrane leakage, while others have been degraded by oxidation and other natural processes.
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.
The significance of these vesicular containers containing soluble molecules first became apparent soon after they appeared during the 1960s. Pharmacists as well as researchers recognized their potential for safely and slowly administering specific pharmaceuticals important to treating cancer and other illnesses. The new method could target undesirable cells more efficiently, and had fewer side issues associated with some medications.
The concept they use is radically different because it does not depend of standard modes of absorption typical of IV or oral administration. Conventional chemical processes can make management of specialized drugs more difficult. They are indiscriminate in their toxicity, and affect healthy organs as well, resulting in unnecessary damage and more lengthy recovery. When delivered via liposomes, release of toxic medication can be better controlled.
The molecules of a drug are suspended in water within the structure of the artificial cell, which is surrounded by a manufactured membrane. The formulating process of specifically designed liposomes transforms them into mechanisms ideal for transporting hydrophilic drugs, or those that are attracted to water and dissolve effectively. Current methods produce two primary forms called unilammelar and multilammelar, and subcategories include varying 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.
It is still comparatively costly to manufacture these microscopic capsules. As practicality increases and research finds new uses and procedures, expenses will probably decrease, but still remain high. As is the case in most newer technologies, there are still many unresolved issues. Some forms of these artificial cells have had problems with wall or membrane leakage, while others have been degraded by oxidation and other natural processes.
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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