V. H. L. Lee and A. Yamamoto. Penetration and enzymatic barriers to peptide and protein absorption. Adv. Drug Delivery Rev.
S. Hirai, T. Yashiki, and H. Mima. Effect of surfactants on the nasal absorption of insulin in rats. Int. J. Pharm.
W. A. Ritschel, G. B. Ritschel, H. Forusz, and M. Kraeling. Buccal absorption of insulin in the dog. Res. Commun. Chem. Pathol. Pharmacol.
T. Nishihata, J. H. Rytting, A. Kamada, T. Higuchi, M. Routh, and L. Caldwell. Enhancement of rectal absorption of insulin using salicylates in dogs. J. Pharm. Pharmacol.
A. Yamamoto, A. M. Luo, S. Dodda-kashi, and V. H. L. Lee. The ocular route for systemic insulin delivery in the albino rabbit. J. Pharmacol. Exp. Ther.
H. Okada, I. Yamazaki, Y. Ogawa, S. Hirai, T. Yashiki, and H. Mima. Vaginal absorption of potent luteinizing hormone-releasing hormone analog (leuprolide) in rats I: Absorption by various routes and absorption enhancement. J. Pharm. Sci.
A. Yamamoto, S. Umemori, and S. Muranishi. Absorption enhancement of intrapulmonary administered insulin by various absorption enhancers and protease inhibitors in rats. J. Pharm. Pharmacol.
S. Muranishi. Absorption enhancers. Crit. Rev. Ther. Drug Carrier Syst.
M. Hashizume, T. Douen, M. Murakami, A. Yamamoto, K. Takada, and S. Muranishi. Improvement of large intestinal absorption of insulin by chemical modification with palmitic acid in rats. J. Pharm. Pharmacol.
K. Yamada, M. Murakami, A. Yamamoto, K. Takada, and S. Muranishi. Improvement of intestinal absorption of thyrotropin-releasing hormone by chemical modification with lauric acid. J. Pharm. Pharmacol.
T. Tenma, E. Yodoya, S. Tashima, T. Fujita, M. Murakami, A. Yamamoto, and S. Muranishi. Development of new lipophilic derivatives of tetragastrin: Physicochemical characteristics and intestinal absorption of acyl-tetragastrin derivatives in rats. Pharm. Res.
M. Saffran, G. S. Kumar, C. Savaiar, J. C. Burnham, F. Williams, and D. C. Neckers. A new approach to the oral administration of insulin and other peptide drugs. Science
M. Morishita, I. Morishita, K. Takayama, Y. Machida, and T. Nagai. Site-dependent effect of aprotinin, sodium caprate, Na2 EDTA and sodium glycocholate on the intestinal absorption of insulin. Biol. Pharm. Bull.
A. Yamamoto, E. Hayakawa, and V. H. L. Lee. Insulin and proinsulin proteolysis in mucosal homogenates of the albino rabbit: Implications in peptide delivery from nonoral routes. Life Sci.
O. H. Lowry, H. J. Rosebrough, A. L. Farr, and R. J. Randall. Protein measurement with folin phenol reagent. J. Biol. Chem.
M. Kidron, H. Bar-On, E. M. Berry, and E. Ziv. The absorption of insulin from the various regions of the rat intestine. Life Sci.
S. J. Hersey, and R. T. Jackson. Effect of bile salts on the nasal permeability in vitro. J. Pharm. Sci.
G. S. Gordon, A. C. Moses, R. D. Silver, J. S. Flier, and M. C. Carey. Nasal absorption of insulin: Enhancement by hydrophobic bile salts. Proc. Natl. Acad. Sci. USA
A. Yamamoto, E. Hayakawa, E. Kato, Y. Nishiura, and V. H. L. Lee. A mechanistic study on enhancement of rectal permeability to insulin in the albino rabbit. J. Pharmacol. Exp. Ther.
R. A. Roth. Bacitracin: An inhibitor of the insulin degrading activity of glutathione-insulin transhydrogenase. Biochem. Biophys. Res. Commun.
S. C. Raehs, J. Sandow, K. Wirth, and H. P. Merkle. The adjuvant effect of bacitracin on nasal absorption of gonadorelin and buserelin in rats. Pharm. Res.
K. Morimoto, H. Yamaguchi, Y. Iwakura, M. Miyazaki, E. Nakatani, T. Iwamoto, Y. Ohashi, and Y. Nakai. Effect of proteolytic enzyme inhibitors on the nasal absorption of vasopressin and an analogue. Pharm. Res.
M. Saffran, C. Bedra, G. S. Kumar, and D. C. Neckers. Vasopressin: A model for study of effects of additives on the oral and rectal administration of peptides drugs. J. Pharm. Sci.