Characterisation, in-vitro and in-vivo evaluation of valproic acid-loaded nanoemulsion for improved brain bioavailability
OBJECTIVE: This study was aimed to investigate the potential of formulated valproic acid-encapsulated nanoemulsion (VANE) to improve the brain bioavailability of valproic acid (VPA). METHODS: Valproic acid-encapsulated nanoemulsions were formulated and physically characterised (osmolarity, viscosity...
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| Format: | Article |
| Language: | English |
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John Wiley & Sons
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/61082/ http://psasir.upm.edu.my/id/eprint/61082/1/Characterisation%2C%20in-vitro%20and%20in-vivo%20evaluation%20of%20valproic%20acid-loaded%20nanoemulsion%20for%20improved%20brain%20bioavailability.pdf |
| _version_ | 1848854334713888768 |
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| author | Tan, Suk Fei Kirby, Brian P. Stanslas, Johnson Basri, Hamidon |
| author_facet | Tan, Suk Fei Kirby, Brian P. Stanslas, Johnson Basri, Hamidon |
| author_sort | Tan, Suk Fei |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | OBJECTIVE: This study was aimed to investigate the potential of formulated valproic acid-encapsulated nanoemulsion (VANE) to improve the brain bioavailability of valproic acid (VPA). METHODS: Valproic acid-encapsulated nanoemulsions were formulated and physically characterised (osmolarity, viscosity, drug content, drug encapsulation efficiency). Further investigations were also conducted to estimate the drug release, cytotoxic profile, in-vitro blood-brain barrier (BBB) permeability, pharmacokinetic parameter and the concentration of VPA and VANE in blood and brain. KEY FINDINGS: Physical characterisation confirmed that VANE was suitable for parenteral administration. Formulating VPA into nanoemulsion significantly reduced the cytotoxicity of VPA. In-vitro drug permeation suggested that VANEs crossed the BBB as freely as VPA. Pharmacokinetic parameters of VANE-treated rats in plasma and brain showed F3 VANE had a remarkable improvement in AUC, prolongation of half-life and reduction in clearance compared to VPA. Given the same extent of in-vitro BBB permeation of VPA and VANE, the higher bioavailability of VANE in brain was believed to have due to higher concentration of VANE in blood. The brain bioavailability of VPA was improved by prolonging the half-life of VPA by encapsulating it within the nanoemulsion-T80. CONCLUSIONS: Nanoemulsion containing VPA has alleviated the cytotoxic effect of VPA and improved the plasma and brain bioavailability for parenteral delivery of VPA. |
| first_indexed | 2025-11-15T11:08:13Z |
| format | Article |
| id | upm-61082 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:08:13Z |
| publishDate | 2017 |
| publisher | John Wiley & Sons |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-610822019-05-06T08:10:37Z http://psasir.upm.edu.my/id/eprint/61082/ Characterisation, in-vitro and in-vivo evaluation of valproic acid-loaded nanoemulsion for improved brain bioavailability Tan, Suk Fei Kirby, Brian P. Stanslas, Johnson Basri, Hamidon OBJECTIVE: This study was aimed to investigate the potential of formulated valproic acid-encapsulated nanoemulsion (VANE) to improve the brain bioavailability of valproic acid (VPA). METHODS: Valproic acid-encapsulated nanoemulsions were formulated and physically characterised (osmolarity, viscosity, drug content, drug encapsulation efficiency). Further investigations were also conducted to estimate the drug release, cytotoxic profile, in-vitro blood-brain barrier (BBB) permeability, pharmacokinetic parameter and the concentration of VPA and VANE in blood and brain. KEY FINDINGS: Physical characterisation confirmed that VANE was suitable for parenteral administration. Formulating VPA into nanoemulsion significantly reduced the cytotoxicity of VPA. In-vitro drug permeation suggested that VANEs crossed the BBB as freely as VPA. Pharmacokinetic parameters of VANE-treated rats in plasma and brain showed F3 VANE had a remarkable improvement in AUC, prolongation of half-life and reduction in clearance compared to VPA. Given the same extent of in-vitro BBB permeation of VPA and VANE, the higher bioavailability of VANE in brain was believed to have due to higher concentration of VANE in blood. The brain bioavailability of VPA was improved by prolonging the half-life of VPA by encapsulating it within the nanoemulsion-T80. CONCLUSIONS: Nanoemulsion containing VPA has alleviated the cytotoxic effect of VPA and improved the plasma and brain bioavailability for parenteral delivery of VPA. John Wiley & Sons 2017 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/61082/1/Characterisation%2C%20in-vitro%20and%20in-vivo%20evaluation%20of%20valproic%20acid-loaded%20nanoemulsion%20for%20improved%20brain%20bioavailability.pdf Tan, Suk Fei and Kirby, Brian P. and Stanslas, Johnson and Basri, Hamidon (2017) Characterisation, in-vitro and in-vivo evaluation of valproic acid-loaded nanoemulsion for improved brain bioavailability. Journal of Pharmacy and Pharmacology, 69 (11). 1447 - 1457. ISSN 0022-3573; ESSN: 2042-7158 https://onlinelibrary.wiley.com/doi/full/10.1111/jphp.12800 10.1111/jphp.12800 |
| spellingShingle | Tan, Suk Fei Kirby, Brian P. Stanslas, Johnson Basri, Hamidon Characterisation, in-vitro and in-vivo evaluation of valproic acid-loaded nanoemulsion for improved brain bioavailability |
| title | Characterisation, in-vitro and in-vivo evaluation of valproic acid-loaded nanoemulsion for improved brain bioavailability |
| title_full | Characterisation, in-vitro and in-vivo evaluation of valproic acid-loaded nanoemulsion for improved brain bioavailability |
| title_fullStr | Characterisation, in-vitro and in-vivo evaluation of valproic acid-loaded nanoemulsion for improved brain bioavailability |
| title_full_unstemmed | Characterisation, in-vitro and in-vivo evaluation of valproic acid-loaded nanoemulsion for improved brain bioavailability |
| title_short | Characterisation, in-vitro and in-vivo evaluation of valproic acid-loaded nanoemulsion for improved brain bioavailability |
| title_sort | characterisation, in-vitro and in-vivo evaluation of valproic acid-loaded nanoemulsion for improved brain bioavailability |
| url | http://psasir.upm.edu.my/id/eprint/61082/ http://psasir.upm.edu.my/id/eprint/61082/ http://psasir.upm.edu.my/id/eprint/61082/ http://psasir.upm.edu.my/id/eprint/61082/1/Characterisation%2C%20in-vitro%20and%20in-vivo%20evaluation%20of%20valproic%20acid-loaded%20nanoemulsion%20for%20improved%20brain%20bioavailability.pdf |