Posts

Showing posts from August, 2021

Drug-delivery vehicles and their efficiency toward cancer treatment

Cancer is the second leading cause of death globally with a high mortality rate, causing 9 million annual deaths with nearly 18 million new cases every year. the main feature of the disease is the high proliferation rate of abnormal cells that grow beyond their usual boundaries of the body organs, resulting in a malignant tumor or neoplasm. Any organ of the human body can be affected with cancer but the lung, female breast, bowed, prostate, and liver are prone to be affected the most. Several factors may cause cancer, Including physical carcinogens such as ultraviolet and ionizing radiation; chemical carcinogens like asbestos, tobacco, and arsenic; and biological carcinogens such as infection from viruses, bacteria, parasites, or cellular contamination. The World Health Organization has suggested that there are three important steps for a greater probability of survival or less morbidity; awareness, clinical diagnosis, and treatment. In the last few decades, a lot of attention has been

Drug Delivery Systems

What are drug delivery systems? Drug delivery systems are engineered technologies for the targeted delivery and/or controlled release of therapeutic agents. Drugs have long been used to improve health and extend lives. The practice of drug delivery has changed dramatically in the past few decades and even greater changes are anticipated in the near future. Biomedical engineers have contributed substantially to our understanding of the physiological barriers to efficient drug delivery, such as transport in the circulatory system and drug movement through cells and tissues; they have also contributed to the development several new modes of drug delivery that have entered clinical practice. Yet, with all of this progress, many drugs, even those discovered using the most advanced molecular biology strategies, have unacceptable side effects due to the drug interacting with healthy tissues that are not the target of the drug. Side effects limit our ability to design optimal medications for