Formulation and Evaluation of Microbubbles by Using Ultrasonication for Treatment of Hypertension

Abstract: Microbubbles (MBs) are microscopic gas-filled bubbles with diameters ranging from 1 to 10µm, commonly used in medical applications such as drug delivery and ultrasound-based imaging. Their unique properties, including a large surface area and responsiveness to ultrasound, make them promising candidates for targeted therapeutic treatments, particularly in diseases such as cancer, hypertension, and heart conditions. This study investigates the preparation, characterization, and potential applications of microbubbles for the targeted delivery of Nicardipine, an antihypertensive drug used in the treatment of hypertension. The microbubbles are composed of a stabilizing albumin shell, encapsulating Nicardipine within the core. A series of techniques, including emulsification, sonication, and heat treatment, are employed to form and stabilize the microbubbles, which are then characterized using optical microscopy and optical spectroscopy for size distribution and concentration. The stability and behavior of the microbubbles under ultrasound exposure are also assessed to evaluate their effectiveness in drug delivery and imaging. The study aims to provide insights into the optimization of microbubble formulations for enhancing therapeutic efficacy while minimizing side effects in hypertension treatment. Additionally, the potential for using microbubbles in combination with ultrasound as a non-invasive method for monitoring blood pressure and improving drug absorption in targeted tissues is explored. These findings could contribute to the development of advanced drug delivery systems, offering a new approach to managing hypertension and related cardiovascular diseases.[5]