{"id":"2b9e17f6-2b15-5292-9ec6-3fbecf727c29","stable_key":"ca8e9e6a-6953-51ec-b712-2b06398a416d:ra-cu-dna","predicate":"increases_in_recorded_comparison","statement":"RA plus Cu(II) increased isolated-DNA 8-oxodG and strand/base damage.","claim_class":"observational","status":"source_recorded","evidence_grade":"ungraded","direction":"positive","is_public":true,"mechanism_event_id":"4934e5d9-2a3c-59b2-a81d-28a2cfb0e00a","mechanism_event_label":"RA plus Cu(II) increased isolated-DNA 8-oxodG and strand/base damage.","subject":{"id":"6072a4ae-d563-5466-a1b2-6d280255d346","slug":"rosmarinic-acid","display_name":"Rosmarinic acid","entity_type_key":"small_molecule"},"object":{"id":"8532a15a-3780-56aa-9024-0efc73f666f5","slug":"ra-cellfree-oxidative-dna-damage","display_name":"Oxidative damage to isolated DNA in RA-metal assays","entity_type_key":"cellular_process"},"evidence_count":1,"mechanism_event":{"id":"4934e5d9-2a3c-59b2-a81d-28a2cfb0e00a","stable_key":"ca8e9e6a-6953-51ec-b712-2b06398a416d:ra-cu-dna-event","event_type":"experimental_observation","label":"RA plus Cu(II) increased isolated-DNA 8-oxodG and strand/base damage.","description":"### ra-cu-dna\n\nRA plus Cu(II) increased isolated-DNA 8-oxodG and strand/base damage.\nHPLC-ECD and labeled-fragment assays; not an oral-toxicity measurement.\nModel and exposure: Isolated DNA; 20 micromolar CuCl2 or Fe(III)-EDTA, pH 7.8, 37 °C, 16 h. No intact human cells.\nLimitations: Limited to the recorded preparation, model, exposure and endpoint. Does not establish a human dietary deficiency, clinical benefit or unique molecular mediation.\nReference: Rosmarinic acid, a natural polyphenol, has a potential pro-oxidant risk via NADH-mediated oxidative DNA damage. | 2024 | https://pubmed.ncbi.nlm.nih.gov/38831385/ | https://pmc.ncbi.nlm.nih.gov/articles/PMC11149181/ | https://doi.org/10.1186/s41021-024-00307-7 | Access: Primary full text: relevant Results/Methods and figure descriptions reviewed; supplements only where explicitly stated.","status":"provisional","compartment":null,"participants":[{"entity":{"id":"6072a4ae-d563-5466-a1b2-6d280255d346","slug":"rosmarinic-acid","display_name":"Rosmarinic acid","entity_type_key":"small_molecule"},"role":"tested factor","stoichiometry":null,"state_label":"RA with Cu(II)","sequence_order":0,"notes":""},{"entity":{"id":"8532a15a-3780-56aa-9024-0efc73f666f5","slug":"ra-cellfree-oxidative-dna-damage","display_name":"Oxidative damage to isolated DNA in RA-metal assays","entity_type_key":"cellular_process"},"role":"measured outcome","stoichiometry":null,"state_label":"increase","sequence_order":1,"notes":""}]},"contexts":[{"dimension":"evidence_access","value_text":"Primary full text: relevant Results/Methods and figure descriptions reviewed; supplements only where explicitly stated.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"experimental_condition","value_text":"20 micromolar","comparator":"No RA at the same Cu(II)","unit":null,"notes":"Condition belongs to the full experimental contrast; do not separate a joint intervention.","entity":{"slug":"copper-ii","display_name":"Copper(II) ion","entity_type_key":"ion"}},{"dimension":"experimental_condition","value_text":"RA with Cu(II)","comparator":"No RA at the same Cu(II)","unit":null,"notes":"Condition belongs to the full experimental contrast; do not separate a joint intervention.","entity":{"slug":"rosmarinic-acid","display_name":"Rosmarinic acid","entity_type_key":"small_molecule"}},{"dimension":"experimental_contrast","value_text":"{\"intervention\": \"RA with Cu(II)\", \"comparator\": \"No RA at the same Cu(II)\", \"endpoint\": \"RA plus Cu(II) increased isolated-DNA 8-oxodG and strand/base damage.\", \"effect_direction\": \"increase\", \"combination\": \"joint\", \"conditions\": [{\"entity_slug\": \"rosmarinic-acid\", \"state\": \"RA with Cu(II)\"}, {\"entity_slug\": \"copper-ii\", \"state\": \"20 micromolar\"}]}","comparator":null,"unit":null,"notes":"Explicit extracted experimental comparison; recorded from source.","entity":null},{"dimension":"experimental_model","value_text":"Isolated DNA; 20 micromolar CuCl2 or Fe(III)-EDTA, pH 7.8, 37 °C, 16 h. No intact human cells.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"interpretation_status","value_text":"Recorded from source with stated access limits; ungraded, not independent replication.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"limitations","value_text":"Limited to the recorded preparation, model, exposure and endpoint. Does not establish a human dietary deficiency, clinical benefit or unique molecular mediation.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"nutrient_topic","value_text":"Rosmarinic acid collection; exact intervention and molecular form govern interpretation.","comparator":null,"unit":null,"notes":"","entity":{"slug":"rosmarinic-acid","display_name":"Rosmarinic acid","entity_type_key":"small_molecule"}},{"dimension":"plain_language","value_text":"RA plus Cu(II) increased isolated-DNA 8-oxodG and strand/base damage.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"primary_references","value_text":"Rosmarinic acid, a natural polyphenol, has a potential pro-oxidant risk via NADH-mediated oxidative DNA damage. | https://pubmed.ncbi.nlm.nih.gov/38831385/ | https://pmc.ncbi.nlm.nih.gov/articles/PMC11149181/ | https://doi.org/10.1186/s41021-024-00307-7","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"source_locator","value_text":"Reviewed reference ra-cu-dna; HPLC-ECD and labeled-fragment assays; not an oral-toxicity measurement.","comparator":null,"unit":null,"notes":"","entity":null}],"evidence":[{"id":"313b8fb2-ecb8-5f0d-9527-854d59966b31","evidence_kind":"source_excerpt","locator":"Lines 305-311","start_line":305,"end_line":311,"excerpt":"### ra-cu-dna\n\nRA plus Cu(II) increased isolated-DNA 8-oxodG and strand/base damage.\nHPLC-ECD and labeled-fragment assays; not an oral-toxicity measurement.\nModel and exposure: Isolated DNA; 20 micromolar CuCl2 or Fe(III)-EDTA, pH 7.8, 37 °C, 16 h. No intact human cells.\nLimitations: Limited to the recorded preparation, model, exposure and endpoint. Does not establish a human dietary deficiency, clinical benefit or unique molecular mediation.\nReference: Rosmarinic acid, a natural polyphenol, has a potential pro-oxidant risk via NADH-mediated oxidative DNA damage. | 2024 | https://pubmed.ncbi.nlm.nih.gov/38831385/ | https://pmc.ncbi.nlm.nih.gov/articles/PMC11149181/ | https://doi.org/10.1186/s41021-024-00307-7 | Access: Primary full text: relevant Results/Methods and figure descriptions reviewed; supplements only where explicitly stated.","model_system":"Isolated DNA; 20 micromolar CuCl2 or Fe(III)-EDTA, pH 7.8, 37 °C, 16 h. No intact human cells.","directness":"reported_statement","verification_status":"source_recorded","notes":"Original paraphrase in the retained reviewed reference, not a verbatim primary-paper quotation. Access level is explicit.","relationship":"supports","weight":1.0,"link_notes":"","source":{"id":"606cff22-a6ed-59cd-a84d-87f44c59dc25","stable_key":"import-ca8e9e6a-6953-51ec-b712-2b06398a416d","title":"Rosmarinic acid: detailed mechanisms of action (reviewed 10 October 2026)","document_type":"imported_text","citation_label":"AI-assisted original curation of primary studies; claim-local access and experimental limitations stated. Includes original-draft correction history. No independent replication claimed.","file_path":"","sha256":"684b4eab1dc2c0057f679109770af0de9340af5cd933377b590298cf8a752956","revision_id":"4028d9c5-fb17-54c5-b72c-c6d21678a832","review_status":"source_recorded","notes":""}}],"relations":[],"conflicts":[],"corrections":[],"research":null}