Chronic Ethanol Increases Proopiomelanocortin Gene Expression in the Rat Hypothalamus
Bibliographic record
Abstract
The effect of chronic ethanol exposure on proopiomelanocortin (POMC) mRNA accumulation, beta-endorphin (beta-EP) levels as well as incorporation of [3H]-phenylalanine into beta-EP-related peptides was investigated in the rat hypothalamus. Animals were treated with an ethanol-containing liquid diet for 15 days. Both sucrose pair-fed and ad libitum-fed control groups were included. The levels of immunoreactive beta-EP, as well as the relative proportions of nonacetyl and acetyl forms of beta-EP in the hypothalami of the ethanol-treated rats were not significantly different from those in the sucrose and lab chow fed control rats. Northern blot analysis of total hypothalamic RNA indicated that ethanol-treated rats had higher POMC mRNA levels than sucrose pair-fed and control rats. Quantitation of the in vitro incorporation of [3H]-phenylalanine into POMC, beta-lipotropin and beta-EP by the hypothalamus, using immunoprecipitation and polyacrylamide disc-gel electrophoresis with sodium dodecyl sulfate, revealed that the increased hypothalamic POMC mRNA content was associated with increased incorporation of [3H]-phenylalanine into POMC by the hypothalami of the ethanol-treated rats. It is concluded that chronic ethanol can alter the expression of the POMC gene in the hypothalamus.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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".