Abstract | BACKGROUND AND PURPOSE: EXPERIMENTAL APPROACH: We generated new GFAP/Gp120 transgenic (Tg) mice that have genetic deletion of Faah gene by mating glial fribillary acidic protein (GFAP)/Gp120 Tg mice with Faah-/- mice. Neurogenesis and cell death were assessed by immunocytochemical analysis. KEY RESULTS:
Endocannabinoid levels in the brain of the double GFAP/Gp120//Faah-/- mice were similar to those observed in Faah-/- mice. However, unlike the impaired neurogenesis observed in GFAP/Gp120 Tg mice and Faah-/- mice, these GFAP/Gp120//Faah-/ mice showed significantly improved neurogenesis in the hippocampus, indicated by a significant increase in neuroblasts and neuronal cells, an increase in BrdU(+) cells and doublecortin positive cells (DCX(+) ), and an increase in the number of PCNA. Furthermore, a significant decrease in astrogliosis and gliogenesis was observed in GFAP/Gp120//Faah-/-mice and neurogenesis was stimulated by neural progenitor cells (NPCs) and/or the newly formed NPC niches characterized by increased COX-2 expression and elevated levels of PGE2 . CONCLUSIONS AND IMPLICATIONS: In vivo genetic ablation of Faah, resulted in enhanced neurogenesis through modulation of the newly generated NPC niches in GFAP/Gp120//Faah-/- mice. This suggests a novel approach of using FAAH inhibitors to enhance neurogenesis in HIV-1 infected brain.
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Authors | H K Avraham, S Jiang, Y Fu, E Rockenstein, A Makriyannis, J Wood, L Wang, E Masliah, S Avraham |
Journal | British journal of pharmacology
(Br J Pharmacol)
Vol. 172
Issue 19
Pg. 4603-14
(Oct 2015)
ISSN: 1476-5381 [Electronic] England |
PMID | 24571443
(Publication Type: Journal Article, Research Support, N.I.H., Extramural)
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Copyright | © 2015 The Authors. British Journal of Pharmacology published by John Wiley & Sons Ltd on behalf of The British Pharmacological Society. |
Chemical References |
- Dcx protein, mouse
- Doublecortin Protein
- Endocannabinoids
- Glial Fibrillary Acidic Protein
- HIV Envelope Protein gp120
- glial fibrillary astrocytic protein, mouse
- Ptgs2 protein, mouse
- Cyclooxygenase 2
- Amidohydrolases
- fatty-acid amide hydrolase
- Dinoprostone
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Topics |
- Amidohydrolases
(genetics)
- Animals
- Brain
(metabolism)
- Cyclooxygenase 2
(metabolism)
- Dinoprostone
(metabolism)
- Doublecortin Protein
- Endocannabinoids
(metabolism)
- Gene Deletion
- Glial Fibrillary Acidic Protein
(genetics)
- HIV Envelope Protein gp120
(genetics)
- Mice, Transgenic
- Neurogenesis
(genetics, physiology)
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