LIPOSOMAL DRUG DELIVERY SYSTEM – A REVIEW

Author(s):  
Anchal Srivastava ◽  
Amresh Gupta ◽  
Arpita Singh

A liposome is the drug delivery system which is used for the administration of various types of drugs or active substance(1) are essential for the treatment of various types of disease. A liposome is a very effective drug delivery system to Target the active medicament to an effective part of the body without entrapping or affecting the other body part that's why it is also called the targeted drug delivery system. Liposomes are available in various sizes to the range for treatment to various types of disease as the carrier for targeted the medicament or drug to active site at a predetermined rate & time range, without affecting the other body part for the treatment of a particular disease. they are colloidal spheres of cholesterol non-poisonous surfactants, sphingolipids, glycolipids, long-chain unsaturated fats, and even layer proteins and active atoms or it is also called vesicular system. (2) this review discusses the advantages and disadvantages, various methods of preparation, evaluation, etc.

Author(s):  
Ezekiel O. Kehinde ◽  
Shah Akrutiben ◽  
Janki Patel

The human body is up of the skin which is the largest organ in the body and hence acts as a biological barrier that obstructs drug movement across the stratum corneum into the systemic circulation. The topical drug delivery system serves as a delivery system in which drugs are delivered for systemic circulation through the skin. Low diffusion rate across the stratum corneum is the main disadvantage of this system and for this limitation to be overcome, an Ethosomal formulation can be formulated which acts as a delivery system for the drug to be delivered across the biological barrier of the skin into the body. In ethosomal gel formulation, The prepared Ethosome is converted into a gel that can be applied to the skin what makes ethosomal gel formulation unique which enables drugs to reach the deep skin layers and/or the systemic circulation and enhance the delivery of active agents. In addition to this, it is also a malleable vesicular delivery carrier, soft and non-invasive. There is also a higher influx of drugs transdermally into the skin as ethosomal gel formulation allows drug to penetrate deep into the skin and enters systemic circulation. There is the development of new and novel therapies for the treatment of disease through the ethosomal drug delivery system as it is safe and effective and also easy to prepare. Topics ranging from preparation of ethosomes, Ethosomal gel, advantages and disadvantages, and characterization techniques are focused on in this review article.


2017 ◽  
Vol 9 (3) ◽  
pp. 1 ◽  
Author(s):  
Smita Bonde ◽  
Sukanya Nair

Liposomes are an efficient novel drug delivery system. They are used because of their structure which is stable and due to their ability to accommodate both lipophilic and hydrophilic drug. Various fascinating types of liposomes have been developed in recent past to further enhance their utility. Long-circulating liposomes or stealth liposomes are able to hide from the defence system of the body and circulate for a longer time in the blood. Targeted liposomes namely immuno- liposomes consists of antibodies conjugated on their surface to improve the specificity of the cell. Liposomes have been modified as per the conditions of pH and temperature, specifically designed to improve drug delivery to targeted tumor cells. Liposomes are being used in the treatment of various diseases and there are various liposomal drug formulations available today. Liposomes can be used as carriers for genetic materials such as antisense, DNA, RNA which are useful in the treatment of diseases. Liposomes are also efficient carriers of cytokines which further activate macrophages. This review provides the detailed insight of types and applications of liposomes and the potential challenges in the development of liposomal drug delivery systems.


2018 ◽  
Vol 8 (6) ◽  
pp. 335-341 ◽  
Author(s):  
Sudhir Kumar Ray ◽  
Nargish Bano ◽  
Tripti Shukla ◽  
Neeraj Upmanyu ◽  
Sharad P. Pandey ◽  
...  

Target-specific drug-delivery systems for the administration of pharmaceutical compounds enable the localization of drugs to target sites within the body.  The basic component of drug delivery systems is an appropriate carrier that protects the drug from rapid degradation or clearance and thereby enhances drug concentration in target tissues. Niosome are microscopic non-ionic surfactant bilayer vesicles obtained on hydration of synthetic nonionic surfactants, with or without incorporation of cholesterol or their lipids. The amphiphilic nature of niosomes promotes their efficiency in encapsulating lipophilic or hydrophilic drugs.  Noisome are promising vehicle for drug delivery and being non-ionic, more stable, inexpensive, biodegradable, biocompatible, non immunogenic and exhibit flexibility in their structural characterization. Various additives in niosomes include nonionic surfactant as film forming agent, cholesterol as stabilizing and rigidizing agent for the bilayer and various charge inducers which develop a charge on the surface of niosomes and stabilize the prepared formulation by the resulting repulsive forces. Niosomes have been widely evaluated for controlled release and targeted delivery for the treatment of cancer, viral infections, microbial diseases, psoriasis, leishmaniasis, migraine, parkinson and other diseases. Niosomes can prolong the circulation of the entrapped drug in body. Encapsulation of drug in vesicular system can be predicted to prolong the existence of drug in the systemic circulation and enhance penetration into target tissue, perhaps reduce toxicity if selective uptake can be achieved. In addition to conventional, oral and parenteral routes, they are amenable to be delivered by ocular, transdermal, vaginal and inhalation routes. Delivery of biotechnological products including vaccine delivery with niosomes is also an interesting and promising research area. More concerted research efforts, however, are still required to realize the full potential of these novel systems. This review article focuses on the concept of niosomes, advantages and disadvantages, composition, method of preparation, separation of unentrapped drug, factors influencing the niosomal formulation and characterization, marketed formulations of niosomes and also gives up to date information regarding recent applications of niosomes in drug delivery. Keyword:  Drug-delivery system, Niosomes, 


Author(s):  
Christe Mary M ◽  
Sasikumar Swamiappan

Presently, various approaches have been exploited in the prolongation of gastric residence time which includes floating drug delivery system (FDDS), swelling and expanding systems, bio-adhesive systems, modified shape systems and high density systems. Among various methods, floating drug delivery system is considered to be a predominant method. Gastric emptying of dosage forms is an extremely varying process and ability to extend and control the emptying time is a valuable resource for the dosage forms. This FDDS is having the ability to provides a solution for this purpose. The FDDS is a bulk density system lower than the gastric fluid, so that the rest will float on the stomach contents for a prolonged period of time and allowing the drug to release slowly at a desired rate from the system and intensifies the bio-availability of the drug having narrow absorption window. The main intension of writing this review on floating drug delivery system is to study the mechanism of flotation to acheive the gastric retention and to discuss briefly about the background of FDDS, advantages and disadvantages, application of FDDS and factors affecting the gastric retension time.


2005 ◽  
Vol 53 (5) ◽  
pp. 1158-1165 ◽  
Author(s):  
Ken-ichiro Matsumoto ◽  
Tomoaki Yahiro ◽  
Ken-ichi Yamada ◽  
Hideo Utsumi

Nano LIFE ◽  
2021 ◽  
Vol 11 (02) ◽  
pp. 2150001
Author(s):  
Yasaman Hamedani ◽  
Murugabaskar Balan ◽  
Soumitro Pal ◽  
Sankha Bhowmick

Delivery of therapeutic compounds to the diseased area in the body with minimized adverse effects is the underlying objective behind development of advanced drug delivery systems. Providing disease-specific release patterns is the ultimate goal of any drug delivery system. Electrospinning has been widely used for nanofiber fabrication. Having high aspect ratio and similarity to the extracellular matrix in the body make electrospun nanofibers a great candidate to be used as drug delivery implants. In this study, we report electrospinning to be a tunable technique capable of providing engineered, disease-specific drug release patterns. Using “one factor at a time” and “central composite design” techniques, we respectively demonstrate flow rate and applied voltage to be the two most significant parameters (with [Formula: see text]-values of 512.48 and 42.31) affecting the final fiber diameter, and capillary-to-collector distance as the least important one, by evaluating their influence, individually and combined, on the morphology of electrospun Poly (Lactide-co-Glycolide acid) nanofibers. Using the same two techniques, we also show that hydrophobicity of the polymeric fibrous scaffold, measured by water contact angle (WCA) with the [Formula: see text]-value of 376.44, is the main factor to consider when designing an electrospun fibrous drug delivery system for a specific disease, while fiber diameter can further modulate the release pattern of the drug from hydrophobic polymeric nanofibers. We finally support our hypothesis by comparing our findings with analysis of data derived from the literature. Taken together, our findings suggest electrospinning to be a tunable technique capable of providing various release patterns for any small molecular weight drug on the basis of the requirements of the diseases to be treated.


2019 ◽  
Vol 107 (2) ◽  
pp. 157-164 ◽  
Author(s):  
Yousef Fazaeli ◽  
Mohammad Amin Hosseini ◽  
Mohammadreza Afrasyabi ◽  
Parviz Ashtari

Abstract Silica nanoparticles (SNPs) are known as intrinsic radiolabeling agents and offer a fast and reliable approach to deliver theranostic agents into targeted organs. Radiolabeled amorphous silica nanoparticles are of great interest to radiation oncology communities. In order to improve the performance of these nano materials in cancer diagnosis and treatment, their inherent properties, such as surface area and the ability to accumulate in cancer cells, should be enhanced. Pyridine functionalized mesoporous silica MCM-41 is known as a potential anticancer-drug delivery system with high suface area. In thiswork, in order to produce an image-guided drug delivery system for diagnostic applications, [68Ga] radionuclide was grafted on pyridine functionalized MCM-41. The nanoparticles were assessed with atomic force microscopy (AFM), paper chromatography, X-ray diffraction, FTIR spectroscopy, CHN and TGA/DTA analyses. The pharmacokinetic profile evaluation of the radiolabeled nano silica, [68Ga]-Py-Butyl@MCM-41, was done in Fibrosarcoma tumor-bearing mice. This labeled nanocomposite with appropriate blood circulation in body, high structural stability, high tumor/blood ID/g% ratio and fast excretion from the body can be proposed as an efficient nano engineered composite for upcoming tumor targeting/imaging nanotechnology-based applications.


2019 ◽  
Vol 20 (15) ◽  
pp. 3764 ◽  
Author(s):  
Mona Ebadi ◽  
Kalaivani Buskaran ◽  
Bullo Saifullah ◽  
Sharida Fakurazi ◽  
Mohd Zobir Hussein

One of the current developments in drug research is the controlled release formulation of drugs, which can be released in a controlled manner at a specific target in the body. Due to the diverse physical and chemical properties of various drugs, a smart drug delivery system is highly sought after. The present study aimed to develop a novel drug delivery system using magnetite nanoparticles as the core and coated with polyvinyl alcohol (PVA), a drug 5-fluorouracil (5FU) and Mg–Al-layered double hydroxide (MLDH) for the formation of FPVA-FU-MLDH nanoparticles. The existence of the coated nanoparticles was supported by various physico-chemical analyses. In addition, the drug content, kinetics, and mechanism of drug release also were studied. 5-fluorouracil (5FU) was found to be released in a controlled manner from the nanoparticles at pH = 4.8 (representing the cancerous cellular environment) and pH = 7.4 (representing the blood environment), governed by pseudo-second-order kinetics. The cytotoxicity study revealed that the anticancer delivery system of FPVA-FU-MLDH nanoparticles showed much better anticancer activity than the free drug, 5FU, against liver cancer and HepG2 cells, and at the same time, it was found to be less toxic to the normal fibroblast 3T3 cells.


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