The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Oral delivery of insulin using pH‐responsive complexation gels
Abstract
The goal of oral insulin delivery devices is to protect the sensitive drug from proteolytic degradation in the stomach and upper portion of the small intestine. In this work, we investigate the use of pH-responsive, poly(methacrylic-g-ethylene glycol) hydrogels as oral delivery vehicles for insulin. Insulin was loaded into polymeric microspheres and administered orally to healthy and diabetic Wistar rats. In the acidic environment of the stomach, the gels were unswollen due to the formation of intermolecular polymer complexes. The insulin remained in the gel and was protected from proteolytic degradation. In the basic and neutral environments of the intestine, the complexes dissociated which resulted in rapid gel swelling and insulin release. Within 2 h of administration of the insulin-containing polymers, strong dose-dependent hypoglycemic effects were observed in both healthy and diabetic rats. These effects lasted for up to 8 h following administration.
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Cites
Biologically erodable microspheres as potential oral drug delivery systems
Mathiowitz, E., Jacob, J. S., Jong, Y. S., Carino, G. P., Chickering, D. E., Chaturvedi, P., Santos, C. A., Vijayaraghavan, K., Montgomery, S., Bassett, M., et al. (1997) · Nature · doi:10.1038/386410a0 · Cited by 823
Cited by
Hydrogels in Biology and Medicine: From Molecular Principles to Bionanotechnology
Peppas, N. A., Hilt, J. Z., Khademhosseini, A., & Langer, R. (2006) · Advanced Materials · doi:10.1002/adma.200501612 · Cited by 4,109
Self-citationHydrogels in pharmaceutical formulations
Peppas, N. (2000) · European Journal of Pharmaceutics and Biopharmaceutics · doi:10.1016/s0939-6411(00)00090-4 · Cited by 4,011
Self-citationHydrogels in controlled release formulations: Network design and mathematical modeling
Lin, C.-C., & Metters, A. T. (2006) · Advanced Drug Delivery Reviews · doi:10.1016/j.addr.2006.09.004 · Cited by 1,768
Polymers for Drug Delivery Systems
Liechty, W. B., Kryscio, D. R., Slaughter, B. V., & Peppas, N. A. (2010) · Annual Review of Chemical and Biomolecular Engineering · doi:10.1146/annurev-chembioeng-073009-100847 · Cited by 1,608
Self-citationBiomaterials: Where We Have Been and Where We Are Going
Ratner, B. D., & Bryant, S. J. (2004) · Annual Review of Biomedical Engineering · doi:10.1146/annurev.bioeng.6.040803.140027 · Cited by 1,507
Metadata
- Authors
- Lowman, A. M., Morishita, M., Kajita, M., Nagai, T., & Peppas, N. A.
- Venue
- Journal of Pharmaceutical Sciences
- Publisher
- American Geophysical Union (AGU)
- Published
- 1999-09
- Volume
- 88
- Issue
- 9
- Pages
- 933-937
- ISSN
- 0022-3549 (ISSN-L)
- OpenAlex
- W1995542474
- Cited by
- 406
- References
- 1
- FWCI
- 6.52
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
