New ex vivo method to objectively assess insulin spatial subcutaneous dispersion through time during pump basal-rate based administration.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
16 11 2023
16 11 2023
Historique:
received:
13
06
2023
accepted:
07
11
2023
medline:
20
11
2023
pubmed:
17
11
2023
entrez:
17
11
2023
Statut:
epublish
Résumé
Glycemic variability remains frequent in patients with type 1 diabetes treated with insulin pumps. Heterogeneous spreads of insulin infused by pump in the subcutaneous (SC) tissue are suspected but were barely studied. We propose a new real-time ex-vivo method built by combining high-precision imaging with simultaneous pressure measurements, to obtain a real-time follow-up of insulin subcutaneous propagation. Human skin explants from post-bariatric surgery are imaged in a micro-computed tomography scanner, with optimised parameters to reach one 3D image every 5 min during 3 h of 1UI/h infusion. Pressure inside the tubing is recorded. A new index of dispersion (IoD) is introduced and computed upon the segmented 3D insulin depot per time-step. Infusions were hypodermal in 58.3% among 24 assays, others being intradermal or extradermal. Several minor bubbles and one occlusion were observed. IoD increases with time for all injections. Inter-assay variability is the smallest for hypodermal infusions. Pressure elevations were observed, synchronised with air bubbles arrivals in the tissue. Results encourage the use of this method to compare infusion parameters such as pump model, basal rate, catheter characteristics, infusion site characteristics or patient phenotype.
Identifiants
pubmed: 37973963
doi: 10.1038/s41598-023-46993-1
pii: 10.1038/s41598-023-46993-1
pmc: PMC10654403
doi:
Substances chimiques
Insulin
0
Hypoglycemic Agents
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
20052Informations de copyright
© 2023. The Author(s).
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