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| Content Provider | Springer Nature Link |
|---|---|
| Author | Krištofiková, Zdena Klaschka, Jan |
| Copyright Year | 1997 |
| Abstract | A second messenger role for arachidonic acid (AA) in the regulation of the high-affinity choline uptake (HACU) was suggested. It was repotted that micromolar concentrations of AA applied in vitro decreased the HACU values and increased the specific binding of [$^{3}$H]hemicholinium-3 ([$^{3}$H]HCh-3). It was published that L-glutamic acid (GA) applied in vivo produced a fall in the HACU values. In addition, GA liberates free AA. In this study, an ability of GA to influence in vitro the activity of presynaptic cholinergic nerve terminals via its effect on the release of AA is investigated in hippocampal synaptosomes of young Wistar rats. Millimolar concentrations of GA decrease both the high- and low-affinity choline uptake, the specific as well as nonspecific binding of [$^{3}$H]HCh-3 and the activity of Na$^{+}$,K$^{+}$-ATPase. Kinetic analysis (Lineweaver-Burk and Scatchard plots) reveals a change in V$_{max}$ and B$_{max}$, but not in K$_{M}$ and K$_{D}$. It appears very likely that under normal conditions GA applied in vitro is not able to change markedly the choline transport via its effect on the release of AA. Results confirm the hypothesis about an indirect inhibitory role for glutamatergic receptors on cholinergic cells. |
| Starting Page | 67 |
| Ending Page | 73 |
| Page Count | 7 |
| File Format | |
| ISSN | 03643190 |
| Journal | Neurochemical Research |
| Volume Number | 22 |
| Issue Number | 1 |
| e-ISSN | 15736903 |
| Language | English |
| Publisher | Kluwer Academic Publishers-Plenum Publishers |
| Publisher Date | 1997-01-01 |
| 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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