Abstract:
OBJECTIVE:To determine the pharmacokinetic (PK) and glucodynamic (GD) dose response of human insulin inhalation powder (HIIP) delivered via AIR particle technology and dose equivalence to subcutaneous (SC) insulin lispro. RESEARCH DESIGN AND METHODS:Twenty healthy, nonsmoking, male or female subjects (aged 29.6 +/- 6.9 years, BMI 23.2 +/- 2.3 kg/m2, means +/- SD) with normal forced vital capacity and forced expiratory volume were enrolled in an open-label, randomized, seven-period, euglycemic glucose clamp, cross-over trial. Each subject received up to four single doses of HIIP (2.6, 3.6, 5.2, or 7.8 mg) and three doses of SC lispro (6, 12, or 18 units) from 5 to 18 days apart. RESULTS:HIIP demonstrated a similar rapid onset but an extended time exposure and a prolonged duration of effect (late t(50%) 412 vs. 236 min, P < 0.001) compared with SC lispro. The HIIP versus SC lispro doses of 2.6 mg vs. 6 units, 5.2 mg vs. 12 units, and 7.8 mg vs. 18 units achieved similar PK area under the serum immunoreactive insulin (IRI) concentration-versus-time curve from time zero until the serum IRI concentrations returned to the predose baseline value [AUC(0-t')] and GD (G(tot)) responses. The median insulin (t(max)) was not different between HIIP and SC lispro (45 min for both), although the median time of return to baseline for PK was apparently longer for HIIP compared with SC lispro (480 vs. 360 min). Relative bioavailability and relative biopotency of HIIP were consistent across doses (8 and 9%). CONCLUSIONS:While the time-action profile was longer for HIIP than for SC lispro, both treatments showed rapid initial absorption and similar overall PK exposure and GD effect. HIIP was as well tolerated as SC lispro, thereby offering a promising alternative to injectable insulin therapy.
journal_name
Diabetes Carejournal_title
Diabetes careauthors
Rave KM,Nosek L,de la Peña A,Seger M,Ernest CS 2nd,Heinemann L,Batycky RP,Muchmore DBdoi
10.2337/diacare.28.10.2400subject
Has Abstractpub_date
2005-10-01 00:00:00pages
2400-5issue
10eissn
0149-5992issn
1935-5548pii
28/10/2400journal_volume
28pub_type
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