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Microglia, sex, and pain: even more twists and turns ahead?

2025· review· en· W4415161066 on OpenAlexafffund
Eder Gambeta, Michael W. Salter

Bibliographic record

VenuePain · 2025
Typereview
Languageen
FieldMedicine
TopicPain Mechanisms and Treatments
Canadian institutionsUniversity of TorontoHospital for Sick Children
FundersCanadian Institutes of Health ResearchKrembil Foundation
KeywordsNeuropathic painMicrogliaChronic painConversationAnimal modelAcute pain

Abstract

fetched live from OpenAlex

ABSTRACT: When IASP began 50 years ago, microglia were not on the radar of pain researchers. Indeed, interest only began to develop in earnest 25 years after IASP was established. Since then, there has been an explosion of information on microglia, particularly in animal models of chronic neuropathic pain. Microglia are regularly part of the conversation about neuropathic pain in animals and humans. The past 25 years has seen many unexpected twists and turns: microglia mediating neuropathic pain, profound mechanistic sex differences, helpful as well as hurtful microglia, and even microglia-independent neuropathic pain. Where will the story go in the next 50 years? Given the rapid growth in imaging of the panoply of cells, signaling molecules, and receptors in the central nervous system, it seems inevitable that the field will have determined whether microglia are intermediaries of chronic pain in humans and whether the mechanistic sex differences found in animal models exist in pain in humans. The principles of precision medicine may be applied to cell types and pathways increasingly identified in preclinical studies. However, application to humans will require advanced molecular diagnostics, not yet developed, for this approach to be successful. Alternatively, to develop safe and effective therapeutics, the field may take advantage of the points of convergence that have been revealed by studies on microglia and sex in pain. Time, and substantial efforts by passionate and talented pain researchers and clinicians, will tell. But what an exciting, and provocative journey it will be, undoubtedly full of novel twists and turns.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.008
metaresearch head score (Gemma)0.009
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Review · Consensus signal: none
Teacher disagreement score0.012
Threshold uncertainty score0.040

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0080.009
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0020.001
Bibliometrics0.0010.001
Science and technology studies0.0030.010
Scholarly communication0.0070.017
Open science0.0010.003
Research integrity0.0050.017
Insufficient payload (model declined to judge)0.0120.003

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.

Opus teacher head0.023
GPT teacher head0.329
Teacher spread0.305 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designNot applicable
Domainnot available
GenreReview

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".

Quick stats

Citations2
Published2025
Admission routes2
Has abstractyes

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