Nicotine Attenuates Disruption of Blood-Brain Barrier Induced by Saturated-Fat Feeding in Wild-Type Mice.
INTRODUCTION: Emerging evidence suggests that integrity of blood-brain barrier (BBB) is pivotal to pathology and pathogenesis of vascular-based neurodegenerative disorders. We have recently reported BBB protective effects of nutraceutical agents with anti-inflammatory properties in an established di...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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2015
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| Online Access: | http://hdl.handle.net/20.500.11937/44513 |
| _version_ | 1848757023006523392 |
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| author | Elahy, M. Lam, V. Pallebage-Gamarallage, M. Giles, C. Mamo, John Takechi, R. |
| author_facet | Elahy, M. Lam, V. Pallebage-Gamarallage, M. Giles, C. Mamo, John Takechi, R. |
| author_sort | Elahy, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | INTRODUCTION: Emerging evidence suggests that integrity of blood-brain barrier (BBB) is pivotal to pathology and pathogenesis of vascular-based neurodegenerative disorders. We have recently reported BBB protective effects of nutraceutical agents with anti-inflammatory properties in an established dietary-induced BBB dysfunction model. Studies also reported that nicotine exhibits anti-oxidative/-inflammatory effects and improve cognitive impairment in Alzheimer's disease. However there has been no studies reporting the effect of nicotine on high-fat-induced BBB dysfunction. METHODS: In the present study, we investigated the effect of nicotine on BBB integrity and neuro-inflammation in an established mouse model of BBB disruption induced by a diet enriched in saturated fatty acids (SFA). RESULTS: Wild-type C57BL/6J mice were fed chow enriched in SFA (23% w/w) with/without nicotine for 10 weeks. Compared to mice maintained on SFA-free and low-fat (LF) chow (4% w/w), capillary permeability indicated by the parenchymal extravasation of plasma derived IgG, was significantly greater in the SFA treatment group. Nicotine provided concomitantly with the SFA diet significantly attenuated IgG extravasation, however it remained significantly greater than LF-controls. Markers of neurovascular inflammation glial fibrillary acidic protein, cyclooxygenase-2, and glucose regulated protein 78 remained exaggerated in SFA+nicotine treated mice compared to LF-controls. Nicotine did however modestly, but not significantly, improve plasma total anti-oxidative status in SFA fed mice. CONCLUSION: Nicotine moderately attenuated BBB disruption induced by chronic ingestion of high-SFA diet, but had no significant effect on neuroinflammation per se. |
| first_indexed | 2025-11-14T09:21:30Z |
| format | Journal Article |
| id | curtin-20.500.11937-44513 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:21:30Z |
| publishDate | 2015 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-445132017-09-13T14:10:11Z Nicotine Attenuates Disruption of Blood-Brain Barrier Induced by Saturated-Fat Feeding in Wild-Type Mice. Elahy, M. Lam, V. Pallebage-Gamarallage, M. Giles, C. Mamo, John Takechi, R. INTRODUCTION: Emerging evidence suggests that integrity of blood-brain barrier (BBB) is pivotal to pathology and pathogenesis of vascular-based neurodegenerative disorders. We have recently reported BBB protective effects of nutraceutical agents with anti-inflammatory properties in an established dietary-induced BBB dysfunction model. Studies also reported that nicotine exhibits anti-oxidative/-inflammatory effects and improve cognitive impairment in Alzheimer's disease. However there has been no studies reporting the effect of nicotine on high-fat-induced BBB dysfunction. METHODS: In the present study, we investigated the effect of nicotine on BBB integrity and neuro-inflammation in an established mouse model of BBB disruption induced by a diet enriched in saturated fatty acids (SFA). RESULTS: Wild-type C57BL/6J mice were fed chow enriched in SFA (23% w/w) with/without nicotine for 10 weeks. Compared to mice maintained on SFA-free and low-fat (LF) chow (4% w/w), capillary permeability indicated by the parenchymal extravasation of plasma derived IgG, was significantly greater in the SFA treatment group. Nicotine provided concomitantly with the SFA diet significantly attenuated IgG extravasation, however it remained significantly greater than LF-controls. Markers of neurovascular inflammation glial fibrillary acidic protein, cyclooxygenase-2, and glucose regulated protein 78 remained exaggerated in SFA+nicotine treated mice compared to LF-controls. Nicotine did however modestly, but not significantly, improve plasma total anti-oxidative status in SFA fed mice. CONCLUSION: Nicotine moderately attenuated BBB disruption induced by chronic ingestion of high-SFA diet, but had no significant effect on neuroinflammation per se. 2015 Journal Article http://hdl.handle.net/20.500.11937/44513 10.1093/ntr/ntv044 restricted |
| spellingShingle | Elahy, M. Lam, V. Pallebage-Gamarallage, M. Giles, C. Mamo, John Takechi, R. Nicotine Attenuates Disruption of Blood-Brain Barrier Induced by Saturated-Fat Feeding in Wild-Type Mice. |
| title | Nicotine Attenuates Disruption of Blood-Brain Barrier Induced by Saturated-Fat Feeding in Wild-Type Mice. |
| title_full | Nicotine Attenuates Disruption of Blood-Brain Barrier Induced by Saturated-Fat Feeding in Wild-Type Mice. |
| title_fullStr | Nicotine Attenuates Disruption of Blood-Brain Barrier Induced by Saturated-Fat Feeding in Wild-Type Mice. |
| title_full_unstemmed | Nicotine Attenuates Disruption of Blood-Brain Barrier Induced by Saturated-Fat Feeding in Wild-Type Mice. |
| title_short | Nicotine Attenuates Disruption of Blood-Brain Barrier Induced by Saturated-Fat Feeding in Wild-Type Mice. |
| title_sort | nicotine attenuates disruption of blood-brain barrier induced by saturated-fat feeding in wild-type mice. |
| url | http://hdl.handle.net/20.500.11937/44513 |