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Dose accuracy is of
the essence The success of any
project designed to develop alternative administration forms for insulin is dependent
on its ability to provide single unit precision and consistency over time.
Aradigm Corporation in Hayward,
California has several years of experience in the development of systems for the
inhalation of drugs. Novo Nordisk can take advantage of this experience in the two
companies collaboration to develop a system for pulmonal (through the lungs)
administration of insulin.
Novo Nordisk has a vast experience in insulin treatment of diabetes and we applied
this expertise when we evaluated various project opportunities, explains Mads
Krogsgaard Thomsen, corporate vice president in charge of Novo Nordisks Health Care
Discovery. We found that the technology developed by Aradigm is the best technology
for pulmonary administration of insulin available at the moment. |

Mads Krogsgaard Thomsen: Pulmonary
administration using insulin in liquid form will primarily be positioned for people with
Type 2 diabetes. |
Aradigms AERx Pulmonary Drug Delivery
System provides a very satisfactory control of dosage as well as particle size. In
contrast to other systems, Aradigms technology controls the breathing
characteristics, preventing inhalation of insulin if the breathing is sub-optimal. This
feature is not found in any other technology. In Aradigms technology each single-use
packet (blister) with insulin has its own aerosol nozzle. This means that the nozzle is
clean and unused before each dose, preventing it from being blocked after repeated use. In
addition, Aradigms system is hand-held and portable. The convenient size of the
applicator adds to the patients flexibility, eg in connection with travelling.
In addition, the AERx system delivers insulin in liquid form, which is expected to
provide a more consistent drug delivery as compared to systems based on solids, which are
much more sensitive, eg to changes in humidity. Furthermore, the insulin crystals in these
systems are coated, which may influence the stability of the protein.
Initially the technology is being developed for use with Novo Nordisks range of
recombinant insulins with a view to studying, among other things, the long-term effects of
taking insulin via the lungs. Following clinical tests with these, trials may be initiated
with Novo Nordisks new short-acting insulin analogue. |
The market
Pulmonary insulin will primarily be positioned for people with Type 2 diabetes who
experience poor glycaemic control on OHAs (oral hypoglycaemic agents).
However, for the foreseeable future, insulin injections will remain the best option for
people with Type 1 diabetes due to the extended treatment period and the demand for tight
glycaemic control which can hardly be achieved with pulmonary insulin. It is expected that
the ease-of-use and convenience of the technology will lead to better compliance: We
target the dosing, using pulmonary administration, to be meal-related. Pulmonary
administration allows the insulin to be absorbed fast and thus provides a rapid onset of
action at meal times. This, hopefully, will provide better glucose control and thus better
mimic insulin produced by the body, explains Krogsgaard Thomsen. |