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- W4312112316 abstract "Pulmonary hypertension (PH) is a cardiovascular disease affecting patient's life. Sildenafil citrate (SC), the first-line treatment, is present in oral and injectable forms with some drawbacks, primarily poor patient's comfort and low oral bioavailability. To counter these limitations, stratum corneum-penetrating hydrogel-forming microneedles (HFM) was created, making it easier to distribute SC transdermally. HFM was fabricated using polyvinyl alcohol (PVA) and two variations of polyvinyl pyrrolidone's (PVP) concentration as polymers and citric acid (CA) as crosslinking agent. The crosslinking time was also variated. The assessment of swelling, insertion characteristics, and mechanical resistance revealed that it possessed swelling capacities up to 470 % and strong insertion capabilities. This HFM was integrated with a tablet reservoir prepared using several concentrations of sodium starch glycolate (SSG) as super disintegrant. The tablet reservoir's hardness, dissolution rate, XRD, and FTIR profiles were evaluated and the results showed that 4 % of SSG was the option for enhancing SC's solubility. According to ex vivo study, this system released 24.12 ± 0.92 % of SC. For the first time, SC was successfully incorporated into a system of HFM and tablet reservoir and was non-toxic, showing promise in terms of improving PAH therapy's efficacy following comprehensive in vivo studies in the future." @default.
- W4312112316 created "2023-01-04" @default.
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- W4312112316 date "2023-01-01" @default.
- W4312112316 modified "2023-09-26" @default.
- W4312112316 title "Polymeric hydrogel forming microneedle-mediated transdermal delivery of sildenafil citrate from direct-compressed tablet reservoir for potential improvement of pulmonary hypertension therapy" @default.
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- W4312112316 doi "https://doi.org/10.1016/j.ijpharm.2022.122549" @default.
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