Effect of Preservatives on Systemic Delivery of Insulin by Ocular Instillation in Rabbits

Author:

Sasaki Hitoshi1,Tei Choyu1,Yamamura Kenzo1,Nishida Koyo1,Nakamura Junzo1

Affiliation:

1. School of Pharmaceutical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852, Japan

Abstract

Abstract The effects of absorption promoters and ophthalmic preservatives on the systemic absorption of insulin through the ocular route were investigated in albino rabbits. Insulin absorption was evaluated by its hypoglycaemic response. Although ocular instillation of insulin alone did not decrease the serum glucose concentration, instillation of insulin with absorption promoters such as EDTA and saponin decreased it. The promoting effect depended on the concentration of the absorption promoters. Of ophthalmic preservatives investigated (benzalkonium chloride, paraben, 2-phenylethanol, benzyl alcohol and sorbic acid), benzal-konium, chloride and paraben showed promoting effects. The promoting effect for benzalkonium chloride was reversible and dependent on concentration of both benzalkonium chloride and insulin in the formulation.

Funder

Ministry of Education, Science and Culture, Japan

Mochida Memorial Foundation

Uehara Memorial Foundation

Publisher

Oxford University Press (OUP)

Subject

Pharmaceutical Science,Pharmacology

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5. Influence of some preservatives on the corneal permeability of pilocarpine and dexamethasone, in vitro;Camber;Int. J. Pharm.,1987

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