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Kolli AR, Veljkovic E, Calvino-Martin F, Esposito M, Kuczaj AK, Koumal O, Rose JE, Peitsch MC. Nicotine flux and pharmacokinetics-based considerations for early assessment of nicotine delivery systems. DRUG AND ALCOHOL DEPENDENCE REPORTS 2024; 11:100245. [PMID: 38948427 PMCID: PMC11214420 DOI: 10.1016/j.dadr.2024.100245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 05/16/2024] [Accepted: 05/22/2024] [Indexed: 07/02/2024]
Abstract
In the past few years, technological advancements enabled the development of novel electronic nicotine delivery systems (ENDS). Several empirical measures such as "nicotine flux" are being proposed to evaluate the abuse liability potential of these products. We explored the applicability of nicotine flux for clinical nicotine pharmacokinetics (PK) and 52-week quit success from cigarettes for a wide range of existing nicotine delivery systems. We found that the differences in nicotine flux for various nicotine delivery systems are not related to changes in PK, as nicotine flux does not capture key physiological properties such as nicotine absorption rate. Further, the 52-week quit success and abuse liability potential of nicotine nasal sprays (high nicotine flux product), and nicotine inhalers (nicotine flux similar to ENDS) are low, suggesting that nicotine flux is a poor metric for the assessment of nicotine delivery systems. PK indices are more dependable for characterizing nicotine delivery systems, and a nicotine plasmaC max T max > 1 could improve 52-week quit success from cigarettes. However, a single metric may be inadequate to fully assess the abuse liability potential of nicotine delivery systems and needs to be further studied. A combination of in vitro and in silico approaches could potentially address the factors influencing the inhaled aerosol dosimetry and resulting PK of nicotine to provide early insights for ENDS assessments. Further research is required to understand nicotine dosimetry and PK for ad libitum product use, and abuse liability indicators of nicotine delivery systems. This commentary is intended to (1) highlight the need to think beyond a single empirical metric such as nicotine flux, (2) suggest potential PK-based metrics, (3) suggest the use of in vitro and in silico tools to obtain early insights into inhaled aerosol dosimetry for ENDS, and (4) emphasize the importance of considering comprehensive clinical pharmacology outcomes to evaluate nicotine delivery systems.
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Affiliation(s)
- Aditya R. Kolli
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel CH-2000, Switzerland
| | - Emilija Veljkovic
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel CH-2000, Switzerland
| | | | - Marco Esposito
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel CH-2000, Switzerland
| | - Arkadiusz K. Kuczaj
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel CH-2000, Switzerland
| | - Ondrej Koumal
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel CH-2000, Switzerland
| | - Jed E. Rose
- Rose Research Center, 7240 ACC Blvd., Raleigh, NC 27617, USA
| | - Manuel C. Peitsch
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel CH-2000, Switzerland
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Xia W, Kolli AR, Kuczaj AK, Szostak J, Lam S, Toh WW, Purwanti A, Tan WT, Ng R, Phillips B, Peitsch MC, Hoeng J. Aerosol delivery and spatiotemporal tissue distribution of hydroxychloroquine in rat lung. Eur J Pharm Sci 2024; 194:106693. [PMID: 38184016 DOI: 10.1016/j.ejps.2024.106693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/29/2023] [Accepted: 01/01/2024] [Indexed: 01/08/2024]
Abstract
Inhalation enables the delivery of drugs directly to the lung, increasing the retention for prolonged exposure and maximizing the therapeutic index. However, the differential regional lung exposure kinetics and systemic pharmacokinetics are not fully known, and their estimation is critical for pulmonary drug delivery. The study evaluates the pharmacokinetics of hydroxychloroquine in different regions of the respiratory tract for multiple routes of administration. We also evaluated the influence of different inhaled formulations on systemic and lung pharmacokinetics by identifying suitable nebulizers followed by early characterization of emitted aerosol physicochemical properties. The salt- and freebase-based formulations required different nebulizers and generated aerosol with different physicochemical properties. An administration of hydroxychloroquine by different routes resulted in varied systemic and lung pharmacokinetics, with oral administration resulting in low tissue concentrations in all regions of the respiratory tract. A nose-only inhalation exposure resulted in higher and sustained lung concentrations of hydroxychloroquine with a lung parenchyma-to-blood ratio of 386 after 1440 min post-exposure. The concentrations of hydroxychloroquine in different regions of the respiratory tract (i.e., nasal epithelium, larynx, trachea, bronchi, and lung parenchyma) varied over time, indicating different retention kinetics. The spatiotemporal distribution of hydroxychloroquine in the lung is different due to the heterogeneity of cell types, varying blood perfusion rate, clearance mechanisms, and deposition of inhaled aerosol along the respiratory tract. In addition to highlighting the varied lung physiology, these results demonstrate the ability of the lung to retain increased levels of inhaled lysosomotropic drugs. Such findings are critical for the development of future inhalation-based therapeutics, aiming to optimize target site exposure, enable precision medicine, and ultimately enhance clinical outcomes.
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Affiliation(s)
- Wenhao Xia
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd., Science Park II, Singapore
| | - Aditya R Kolli
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel CH-2000, Switzerland.
| | - Arkadiusz K Kuczaj
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel CH-2000, Switzerland
| | - Justyna Szostak
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel CH-2000, Switzerland
| | - Sharon Lam
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd., Science Park II, Singapore
| | - Wei Wen Toh
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd., Science Park II, Singapore
| | - Asef Purwanti
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd., Science Park II, Singapore
| | - Wei Teck Tan
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd., Science Park II, Singapore
| | - Raymond Ng
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd., Science Park II, Singapore
| | - Blaine Phillips
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd., Science Park II, Singapore
| | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel CH-2000, Switzerland
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel CH-2000, Switzerland
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O’Sullivan SE, Jensen SS, Kolli AR, Nikolajsen GN, Bruun HZ, Hoeng J. Strategies to Improve Cannabidiol Bioavailability and Drug Delivery. Pharmaceuticals (Basel) 2024; 17:244. [PMID: 38399459 PMCID: PMC10892205 DOI: 10.3390/ph17020244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/02/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024] Open
Abstract
The poor physicochemical properties of cannabidiol (CBD) hamper its clinical development. The aim of this review was to examine the literature to identify novel oral products and delivery strategies for CBD, while assessing their clinical implications and translatability. Evaluation of the published literature revealed that oral CBD strategies are primarily focused on lipid-based and emulsion solutions or encapsulations, which improve the overall pharmacokinetics (PK) of CBD. Some emulsion formulations demonstrate more rapid systemic delivery. Variability in the PK effects of different oral CBD products is apparent across species. Several novel administration routes exist for CBD delivery that may offer promise for specific indications. For example, intranasal administration and inhalation allow quick delivery of CBD to the plasma and the brain, whereas transdermal and transmucosal administration routes deliver CBD systemically more slowly. There are limited but promising data on novel delivery routes such as intramuscular and subcutaneous. Very limited data show that CBD is generally well distributed across tissues and that some CBD products enable increased delivery of CBD to different brain regions. However, evidence is limited regarding whether changes in CBD PK profiles and tissue distribution equate to superior therapeutic efficacy across indications and whether specific CBD products might be suited to particular indications.
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Affiliation(s)
| | - Sanne Skov Jensen
- Fertin Pharma, Dandyvej 19, 7100 Vejle, Denmark; (S.S.J.); (G.N.N.); (H.Z.B.)
| | - Aditya Reddy Kolli
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland;
| | | | - Heidi Ziegler Bruun
- Fertin Pharma, Dandyvej 19, 7100 Vejle, Denmark; (S.S.J.); (G.N.N.); (H.Z.B.)
| | - Julia Hoeng
- Vectura Fertin Pharma, 4058 Basel, Switzerland;
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