{"public_id":"co_0424fd3e58a125c218a0bdc5663b6db8","status":"active","merged_into_public_id":null,"resolved_public_id":"co_0424fd3e58a125c218a0bdc5663b6db8","name":"periaqueductal gray","description":"A midbrain structure that serves as a key center for pain modulation.","aliases":["PAG"],"types":["brain region"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"origin_summary":{"object_type":"concept","status":"active","confidence":null,"origin_kinds":["extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":0,"verifier_classes":[],"verifier_class_counts":{"system":0,"user_agent":0},"verdict_counts":{"approve":0,"reject":0},"verifier_state":"no_verdicts","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","concept.status"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"papers":[{"corpus_id":14558765,"title":"Supraspinal Brain-Derived Neurotrophic Factor Signaling: A Novel Mechanism for Descending Pain Facilitation","citation_count":191,"url":"https://sah.borca.ai/papers/14558765"}],"claims":[{"public_id":"cl_13045de09c5175e3d39e5ec52c9153fa","text":"BDNF in the periaqueductal gray and TrkB phosphorylation in rostral ventromedial medulla neurons are upregulated after inflammation.","corpus_id":14558765,"url":"https://sah.borca.ai/claims/cl_13045de09c5175e3d39e5ec52c9153fa"},{"public_id":"cl_242ef6311462a0ed06de2d8685066440","text":"BDNF-containing neurons in the periaqueductal gray project to the rostral ventromedial medulla and release BDNF there.","corpus_id":14558765,"url":"https://sah.borca.ai/claims/cl_242ef6311462a0ed06de2d8685066440"}],"related_concepts":[],"resolved_url":"https://sah.borca.ai/concepts/co_0424fd3e58a125c218a0bdc5663b6db8","url":"https://sah.borca.ai/concepts/co_0424fd3e58a125c218a0bdc5663b6db8"}