Clinical implications of metals-based drug-delivery systems

Author(s):  
Talat Roome ◽  
Anam Razzak
Author(s):  
Kallem Sharat Venkat Reddy

The use of lipids in drug delivery is not a new trend, some of the lipid dosage forms have been in use for a long time such as suppositories, creams, and emulsions. However, there has been much advancement in the designs of lipid carriers over the past decade. In the same way from the past two decades, new approaches in biodegradable and bio-reducible polymers have paved a way for many recent drug delivery systems. Applications of these novel drug delivery formulations have been promising clinically. However, each system has its pros and cons in various factors depending upon their use and intended route of administration. This review focuses on upbringing the challenges in the use of novel lipid and polymer drug delivery systems in clinical settings and few insights on how to overcome them.


Author(s):  
Sai Raj Kappari

This paper will emphasize some of the clinical implications of polymers and lipids in designing drug delivery systems in the geriatric population. This article will give us an overview of the advantages and disadvantages of polymers and lipids in formulating DDS in individuals over 65 in the United States. Lipid polymer hybrids can be advantageous in systemic drug bioavailability to patients who have decreased drug carrier capacity. Older adults may benefit from lipid polymer hybrids as it enhances drug delivery and drug targeting process. Most of the older adults use a minimum of 4 to 6 medications for a variety of medical ailments and conditions. Polypharmacy may be an advent situation in some of the cases, which can be reduced by innovative drug delivery options.


Author(s):  
G.E. Visscher ◽  
R. L. Robison ◽  
G. J. Argentieri

The use of various bioerodable polymers as drug delivery systems has gained considerable interest in recent years. Among some of the shapes used as delivery systems are films, rods and microcapsules. The work presented here will deal with the techniques we have utilized for the analysis of the tissue reaction to and actual biodegradation of injectable microcapsules. This work has utilized light microscopic (LM), transmission (TEM) and scanning (SEM) electron microscopic techniques. The design of our studies has utilized methodology that would; 1. best characterize the actual degradation process without artifacts introduced by fixation procedures and 2. allow for reproducible results.In our studies, the gastrocnemius muscle of the rat was chosen as the injection site. Prior to the injection of microcapsules the skin above the sites was shaved and tattooed for later recognition and recovery. 1.0 cc syringes were loaded with the desired quantity of microcapsules and the vehicle (0.5% hydroxypropylmethycellulose) drawn up. The syringes were agitated to suspend the microcapsules in the injection vehicle.


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