Michael W Epperly1, Peter Wipf2,3, Renee Fisher1, Darcy Franicola1, Jan Beumer3, Song Li3, Rhonda M Brand4, Louis D Falo4, Geza Erdos4, Joel S Greenberger5. 1. Department of Radiation Oncology, UPMC Hillman Cancer Center, Pittsburgh, PA, U.S.A. 2. Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, U.S.A. 3. Department of Pharmaceutical Science, University of Pittsburgh, Pittsburgh, PA, U.S.A. 4. Department of Dermatology, University of Pittsburgh, Pittsburgh, PA, U.S.A. 5. Department of Radiation Oncology, UPMC Hillman Cancer Center, Pittsburgh, PA, U.S.A. greenbergerjs@upmc.edu.
Abstract
BACKGROUND/AIM: The mitochondrial targeted GS-nitroxide, JP4-039, is an effective total body irradiation (TBI) mitigator when delivered intravenously (IV) up to 72 h after exposure. Effective systemic and localized administration to oral cavity/oropharynx and esophagus has been demonstrated. The objective of the study was to establish alternatives to IV administration suitable for JP4-039 delivery to mass casualties. MATERIALS AND METHODS: JP4-039 was administered to C57BL/6 mice by topically applied carboxy-methyl-cellulose microneedle arrays (MNAs) or by intramuscular (IM) injection. Three different formulations that have passed Food and Drug Administration review, namely Captisol, 2-hydroxypropyl-β-cyclodextrin (cyclodextrin), and Miglyol-812-N, were used for drug delivery. Intraoral (IO) administration with each formulation was also evaluated. RESULTS: All tested formulations and MNAs successfully delivered JP4-039. However, IM delivery of the Miglyol-812-N displayed very efficient and highly reproducible radiation mitigation. CONCLUSION: Effective IM delivery of JP4-039 in animal models after TBI or partial-body irradiation suggested the use of the Miglyol-812-N formulation in both medical indications and radiation countermeasures. Copyright
BACKGROUND/AIM: The mitochondrial targeted GS-nitroxide, JP4-039, is an effective total body irradiation (TBI) mitigator when delivered intravenously (IV) up to 72 h after exposure. Effective systemic and localized administration to oral cavity/oropharynx and esophagus has been demonstrated. The objective of the study was to establish alternatives to IV administration suitable for JP4-039 delivery to mass casualties. MATERIALS AND METHODS:JP4-039 was administered to C57BL/6 mice by topically applied carboxy-methyl-cellulose microneedle arrays (MNAs) or by intramuscular (IM) injection. Three different formulations that have passed Food and Drug Administration review, namely Captisol, 2-hydroxypropyl-β-cyclodextrin (cyclodextrin), and Miglyol-812-N, were used for drug delivery. Intraoral (IO) administration with each formulation was also evaluated. RESULTS: All tested formulations and MNAs successfully delivered JP4-039. However, IM delivery of the Miglyol-812-N displayed very efficient and highly reproducible radiation mitigation. CONCLUSION: Effective IM delivery of JP4-039 in animal models after TBI or partial-body irradiation suggested the use of the Miglyol-812-N formulation in both medical indications and radiation countermeasures. Copyright
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