Biodegradable Therapeutic Microneedle Patch for Rapid Antihypertensive Treatment

ACS Applied Materials & Interfaces
Yan LiJun Tao

Abstract

A hypertensive emergency causes severe cardiovascular diseases accompanied by acute target organ damage, requiring rapid and smooth blood pressure (BP) reduction. Current medicines for treating hypertensive emergencies, such as sodium nitroprusside (SNP), require careful dose control to avoid side effects (e.g., cyanide poisoning). The clinical administration of SNP using intravenous injection or drip further restrict its usage for first aid or self-aid in emergencies. Here, we developed an antihypertensive microneedle (aH-MN) technique to transdermally deliver SNP in combination with sodium thiosulfate (ST) as a cyanide antidote in a painless way. Dissolvable microneedles loaded with SNP and ST were fabricated via the centrifugation casting method, where the SNPs were stably packaged in microneedles and would be immediately released into the systemic circulation via subcutaneous capillaries when aH-MNs penetrated the skin. The antihypertensive effects were demonstrated on spontaneously hypertensive rat models. Rapid and potent BP reduction was achieved via aH-MN treatment, fulfilling clinical BP-control requirements for hypertensive emergencies. The side effects including skin irritation and target organ damage of aH-MN therap...Continue Reading

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Citations

Jan 8, 2020·AAPS PharmSciTech·Kevin Ita, Sharon Ashong
Jan 10, 2021·Journal of Clinical Medicine·Vahid AlimardaniSamad Ahadian
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Oct 13, 2021·Drug Delivery and Translational Research·Ruyi ZhouYuqi Zhang

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