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Spatial separation of different drug substances in one microneedle array patch by combining inkjet printing and micromolding technology.

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Heinrich Heine University Duesseldorf, Faculty of Mathematics and Natural Sciences, Institute of Pharmaceutics and Biopharmaceutics, Universitätsstraße 1, Duesseldorf 40225, Germany. Electronic address:

Transdermal drug delivery using microneedle array patches has been investigated using a wide range of drug substances. Inkjet printing and micromolding are established methods for the production of microneedle array patches and both were used to combine lisinopril embedded in povidone and ibuprofen in Eudragit® RS / RL in a single patch. Dissolution studies, visual inspection, mechanical strength and insertion into an artificial skin membrane model were investigated.

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Vestibular afferent neurons develop normally in the absence of quantal/glutamatergic input.

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Caruso Department of Otolaryngology-Head and Neck Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.

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