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| Content Provider | Springer Nature Link |
|---|---|
| Author | Linden, David R. El Fakahany, Esam E. |
| Copyright Year | 2002 |
| Abstract | Strong evidence supports that nitric oxide (NO) alters cell signaling pathways involving arachidonic acid (AA). Little is known, however, about the reciprocal modulation of nitrergic pathways by AA. The effects of exogenous AA on signal transduction of M$_{1}$ muscarinic acetylcholine receptors were investigated in a model system of stably transfected Chinese hamster ovary cells. AA concentration-dependently inhibited the effects of carbachol in producing NO (IC$_{50}$ = 191 μM) but did not alter inositol phosphate production or M$_{1}$ receptor binding. AA inhibited both carbachol-induced transient and sustained increase in intracellular calcium concentration ([Ca$^{2+}$]$_{i}$; IC$_{50}$ = 11 and 12 μM, respectively). Furthermore, AA-induced increase in [Ca$^{2+}$]$_{i}$ cross-desensitizes with thapsigargin, but AA does not inhibit Ca$^{2+}$-ATPase activity. These data support the concept that AA concentration-dependently inhibits receptor-mediated NO production at the level of calcium mobilization. |
| Starting Page | 441 |
| Ending Page | 449 |
| Page Count | 9 |
| File Format | |
| ISSN | 03643190 |
| Journal | Neurochemical Research |
| Volume Number | 27 |
| Issue Number | 6 |
| e-ISSN | 15736903 |
| Language | English |
| Publisher | Kluwer Academic Publishers-Plenum Publishers |
| Publisher Date | 2002-01-01 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Neurosciences Neurology Biochemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Biochemistry Cellular and Molecular Neuroscience |
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