Differential modulation of intracellular Ca2+ responses in B lymphoblasts by mood stabilizers
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Bibliographic record
Abstract
Irregularities of intracellular calcium (Ca2+) homeostasis have been implicated in the pathophysiology of bipolar disorder (BD). Findings that chronic ex-vivo treatment with lithium modifies lysophosphatidic acid (LPA)-stimulated Ca2+ responses in B lymphoblast cell lines (BLCLs) from BD-I patients and healthy controls, and differentially decreases levels of the type-3 canonical transient receptor potential Ca2+-permeable channel in BLCLs from BD-I patients, support the view that the amelioration of these abnormalities is important in the therapeutic action of lithium. To determine whether other clinically efficacious mood stabilizers share these effects, LPA (100 mum)- and thapsigargin (TG, 200 nm)-stimulated Ca2+ responses were determined in BLCLs from BD-I patients and healthy controls treated acutely (24 h) and chronically (7 d) ex vivo with therapeutically relevant concentrations of lithium (0.75 mm), valproate (0.5 mm), lamotrigine (15 mum) or respective vehicles. Chronic treatment with valproate significantly attenuated LPA-stimulated Ca2+ responses ([downward arrow]8%: F's=9.1-9.4, d.f.=1, 9, p's<0.05) compared to vehicle in BLCLs from BD-I patients and healthy controls, similar to chronic lithium treatment ([downward arrow]8%: F=6.2, d.f.=1, 21, p<0.05), but also attenuated TG-evoked Ca2+ responses ([downward arrow]10% to [downward arrow]19%: F's=5.5-15.5, d.f.=1, 12, p's<0.05). However, chronic lamotrigine treatment did not affect LPA- or TG-stimulated Ca2+ responses. These results suggest that chronic lithium and valproate treatments act differently from lamotrigine in respect of modulation of receptor- and/or capacitance-mediated Ca2+ flux. These differential effects on Ca2+ responses may be relevant to the distinctive clinical profiles of these mood stabilizers.
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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 it