Abstract
The present study investigates the role of fish oil (FO)– and butter oil (BO)–enriched microemulsion-based system of galantamine hydrobromide (GH), an anti-Alzheimer drug, for its potential role in brain permeation enhancement and neuroprotection against oxidative stress. Microemulsion (ME)-based system of GH was prepared using water phase titration. The prepared ME was characterized by several physicochemical parameters like particle size, polydispersity index, and ex vivo drug permeation. Cell-based oxidative stress assays and pharmacokinetic studies were performed using C6 glial cell lines, and Sprague Dawley rats, respectively. The optimized ME comprised 5.3% v/v of Capmul MCM EP (as oil),15.8% v/v of Tween-80 (as surfactant), 5.3% v/v of Transcutol P (as co-surfactant), and 73.6% v/v of water (as aqueous phase). The addition of FO and BO resulted in a slight increase in the droplet size and decrease in transparency of ME. Cell-based anti-oxidative stress assays (glutathione assay, nitrite assay, and lipid peroxidation assay) showed the efficacy of formulation in the order of ME, BO ME, and FO ME, respectively. A similar trend was also observed in in vivo animal studies, wherein GH FO ME showed a comparatively higher percentage of drug reaching the brain when administered by intranasal route than by IV route. The study concluded the potential benefits of co-administering FO- and BO-enriched microemulsion is not only enhancing the permeation of drugs across BBB but also improving efficacy against lipopolysaccharide-induced oxidative stress.
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Abbreviations
- AD:
-
Alzheimer’s disease
- ANOVA:
-
analysis of variance
- AUC:
-
area under curve
- BACE 1:
-
beta-secretase 1
- BBB:
-
blood-brain barrier
- CNS:
-
central nervous system
- DHA:
-
docosahexaenoic acid
- DSC:
-
differential scanning calorimetry
- DTNB:
-
5,5′-dithio-bis-[2-nitrobenzoic acid]
- EPA:
-
eicosapentaenoic acid
- FT-IR:
-
Fourier-transform infrared spectroscopy
- GH:
-
galantamine hydrobromide
- GH ME:
-
galantamine hydrobromide microemulsion
- GH BO ME:
-
galantamine hydrobromide butter oil loaded microemulsion
- GH FO ME:
-
galantamine hydrobromide fish oil loaded microemulsion
- GSH:
-
glutathione
- I.S:
-
internal standard
- LC-MS:
-
liquid chromatography-mass spectrometry
- LPS:
-
lipopolysaccharide
- MDA:
-
malondialdehyde
- MTT:
-
3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
- NADPH:
-
nicotinamide adenine dinucleotide phosphate
- PDI:
-
polydispersity index
- Q-TOF:
-
quadrupole-time-of-flight
- ROS:
-
reactive oxygen species
- RT:
-
room temperature
- UV-VIS:
-
ultraviolet spectrophotometer
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Acknowledgments
All other authors are grateful to the Ministry of Chemicals and Fertilizer for providing fellowship. Authors would like to acknowledge Gattefosse (Mumbai, India) for gift samples of excipients.
Funding
The corresponding author would like to thank the Department of Science and Technology and SERB (INSPIRE Grant No: IFA-LSBM-13 and EMR/2016/007966/HS) for project funds.
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The protocol for animal studies was approved by the Institutional Animal Ethics Committee (Approval No: NIPER A/IAEC/2018/006 under CPCSEA, Delhi, India), and studies were performed adhering to the guidelines at National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, India.
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Katdare, A., Khunt, D., Thakkar, S. et al. Comparative evaluation of fish oil and butter oil in modulating delivery of galantamine hydrobromide to brain via intranasal route: pharmacokinetic and oxidative stress studies. Drug Deliv. and Transl. Res. 10, 1136–1146 (2020). https://doi.org/10.1007/s13346-020-00739-y
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DOI: https://doi.org/10.1007/s13346-020-00739-y