Investigating Glial Fibrillary Acidic Protein Expression and Cell Morphology in a Rat Brain Following Exposure to a Weak Electromagnetic Field and Nitric Oxide Modulation During Development
Bibliographic record
Abstract
Background/Objectives: Nitric oxide (NO) and electromagnetic fields (EMFs) have been reported to influence central nervous system (CNS) function and organization. This study explores the effects of NO modulation and EMF exposure on neurodevelopment and glial fibrillary acidic protein (GFAP) expression and cell morphology, extending the prior work on perinatal EMF exposure in Wistar rats. Methods: Rats were perinatally exposed to water, 1 g/L L-arginine (LA), or 0.5 g/L N-methylarginine (NMA), along with a 7 Hz square-wave EMF at intensities of 0 nT, ≤50 nT, or 500 nT, starting three days before birth and continuing for 14 days postnatally. GFAP expression and cell morphology were analyzed via immunohistochemistry in regions including the hypothalamus, amygdala, hippocampus, and cortex. Results: Significant changes in GFAP morphology and expression are observed. A main EMF effect emerged in the right ventromedial hypothalamus, where the branch length of GFAP-expressing cells increased in EMF-exposed groups compared to the controls [t(32) = −2.52, p = 0.017]. In the hippocampus, LA exposure decreased GFAP expression in the right dentate gyrus compared to water controls [t(23) = 2.37, p = 0.027]. A sex-specific EMF effect was detected in the left CA2 hippocampus, where males exposed to EMF showed significant differences from unexposed males [t(15) = −2.90, p = 0.011]. Conclusions: These findings reveal complex interactions between EMF exposure, sex, and NO modulation, with region-specific effects on GFAP expression in the developing rat brain.
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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 | 0.000 | 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".