Lane, M;
Zhang, Y;
Kung, C-P;
Iliopoulos, F;
Sil, B;
Hadgraft, J;
(2021)
Dermal Delivery of Niacinamide—In Vivo Studies.
Pharmaceutics
, 13
(5)
, Article 726. 10.3390/pharmaceutics13050726.
Preview |
Text
Lane_pharmaceutics-13-00726.pdf - Published Version Download (1MB) | Preview |
Abstract
In vivo human studies are considered to be the “gold standard” when investigating (trans)dermal delivery of actives. Previously, we reported the effects of a range of vehicles on the delivery of niacinamide (NIA) using conventional Franz cell studies. In the present work, dermal delivery of NIA was investigated in vivo in human subjects using confocal Raman spectroscopy (CRS) and tape stripping (TS). The vehicles investigated included propylene glycol (PG), Transcutol® P (TC), binary combinations of PG with oleic acid (OA) or linolenic acid (LA) and a ternary system comprising of TC, caprylic/capric triglyceride (CCT) and dimethyl isosorbide (DMI). For the CRS studies, higher area under curve (AUC) values for NIA were observed for the PG:LA binary system compared with PG, TC and TC:CCT:DMI (p < 0.05). A very good correlation was found between the in vitro cumulative permeation of NIA and the AUC values from Raman intensity depth profiles, with a Pearson correlation coefficient (R2) of 0.84. In addition, an excellent correlation (R2 = 0.97) was evident for the signal of the solvent PG and the active. CRS was also shown to discriminate between NIA in solution versus crystalline NIA. The findings confirm that CRS is emerging as a powerful approach for dermatopharmacokinetic studies of both actives and excipients in human.
| Type: | Article |
|---|---|
| Title: | Dermal Delivery of Niacinamide—In Vivo Studies |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3390/pharmaceutics13050726 |
| Publisher version: | https://doi.org/10.3390/pharmaceutics13050726 |
| Language: | English |
| Additional information: | This is an open access article distributed under the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | niacinamide; skin permeation; in vivo; confocal Raman spectroscopy; tape stripping; in vitro-in vivo correlation |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > UCL School of Pharmacy UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > UCL School of Pharmacy > Pharmaceutics |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10127897 |
Archive Staff Only
 |
View Item |
