Abstract
Purpose
Dissolving microneedle patches are attracting attention as they are associated with improved patient compliance and safety.
Methods
This study fabricated dissolving microneedle (DMN) patches from modified sodium carboxymethylcellulose (CMC) and gelatin might be as an alternative to subcutaneous injection for the transdermal delivery of insulin.
Results
The prepared DMNs exhibited excellent mechanical strength to penetrate the skin and confocal microscopy showed gradual diffuse from the puncture sites to deeper tissue up to more than 750–800 µm. The in vitro study was performed by a dissolution apparatus and ex vivo by the Franz diffusion cell system mainly quantified by human insulin ELISA kit where the release study exhibited excellent results with constant and stable delivery up to 96 ± 2%. The in vivo study results confirmed an ideal drug release profile up to 95 ± 2% until 8 h in 24-h study and thus insulin-loaded CMC-gelatin formulation is suitable for drug encapsulation, having excellent dissolving factor and penetration depth and avoiding drug loss. A home applicator played an important role in improving the efficacy and stability and faster insulin release rate. The plasma insulin level and blood glucose level (BGL) were calculated and were maintained and a stable decrease in 3–4 h was observed compared to SC injection route with the same insulin dose.
Conclusion
These results suggest that the CMC-gelatin DMN patch loaded with insulin has great potential in diabetes treatment for both type 1 and 2 diabetic patients in a relatively painless, rapid, and convenient manner.
Graphical Abstract
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Availability of Data and Material
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Acknowledgements
The author gratefully acknowledges the fellowship received from Indian Council of Medical Research (ICMR), New Delhi (Ref No.: 45/38/2018/MP/BMS) for carrying out research in this field. We thank the team of APT Research Foundation, Pune, for helpful discussion and support for in vivo studies. We also acknowledge technical support provided by IRCC IIT Bombay and SAIF IIT Bombay.
Funding
Funding was received from Indian Council of Medical Research (ICMR)—New Delhi (Ref No.: 45/38/2018/MP/BMS) for carrying out this whole project.
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Baishali A. Jana was involved in the conceptualization, methodology, experiments, software, data curation, writing—original draft preparation, investigation. Riyaz Ali Osmani was involved in the experiments, investigation, software, editing, data curation. Sanket Jaiswal was involved in experiments, software, data curation. Rinti Banerjee was involved in supervision, reviewing, validation, and visualization. Veera Venkata Satyanarayana Reddy Karri was involved in visualization, reviewing, and editing. Ashish Wadhwani was involved in the conceptualization, visualization, validation, reviewing, editing, and supervision.
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All the experiments were approved by the APT Research Foundation (National Toxicological Centre, NTC), Pune, in accordance with the guidelines for animal experimentation of NTC (RP 35_1920 approval number).
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Jana, B.A., Osmani, R.A., Jaiswal, S. et al. Fabrication of Carboxymethylcellulose-Gelatin Dissolving Microneedle Patch for Pain-Free, Efficient, and Controlled Transdermal Delivery of Insulin. J Pharm Innov 18, 653–664 (2023). https://doi.org/10.1007/s12247-022-09670-w
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DOI: https://doi.org/10.1007/s12247-022-09670-w