Regulation of Gnrh mRNA Expression by the ω-3 Polyunsaturated Fatty Acid Docosahexaenoic acid and the Saturated Fatty Acid Palmitate in a GnRH-synthesizing Neuronal Cell Model
Bibliographic record
Abstract
Gonadotropin-releasing hormone (GnRH) neurons coordinate reproduction. Whether GnRH neurons directly sense free fatty acids (FFAs) is unknown. We investigated the individual effects of the FFAs palmitate, palmitoleate, oleate, and docosahexaenoic acid (DHA) (100 μM each) on Gnrh mRNA expression in the mHypoA-GnRH/GFP neuronal cell model. We report that 2 h exposure to palmitate or DHA increases Gnrh transcription. Using the inhibitors AH7614, K252c, U0126, wortmannin, and LY294002, we demonstrate that the effect of DHA is mediated through G protein-coupled receptor 120 to downstream PKC/MAPK and PI3K signaling. Moreover, we propose that the effect of palmitate may depend on palmitoyl-coA synthesis and PI3K signaling. Finally, we explored the effects of FFA combinations, and we report that oleate abolishes the effect of 2 h palmitate treatment on Gnrh. Overall, these studies advance our understanding of the cellular mechanisms underlying FFA sensing in a GnRH neuronal model and may relate to reproductive function.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".