Component
Intracellular cyclic AMP content
Intracellular cyclic AMP content. The model and exposure of each linked claim define its scope.
3 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What acts on it
Melatonin lowered cAMP in the insulin-secreting cells in the study.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/melatonin-research/27185156.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "61fcf7c730c1349e5b306e5c9cfcabcb2905290d7f8762cbfba06f2b5fccaded", "start_char": 0, "end_char": 1043, "text_sha256": "61fcf7c730c1349e5b306e5c9cfcabcb2905290d7f8762cbfba06f2b5fccaded"}
- experimental_model
- Human islet genetics, cell experiments and recall-by-genotype intervention
- exposure
- Risk G allele, receptor overexpression and melatonin exposure
- limitations
- Genotype associations, cultured-cell manipulation and human intervention are separate evidence types. Do not generalize islet signaling to every tissue.
- nutrient_topic
- Melatonin research collection; topical membership is not evidence of a direct dietary effect. · Melatonin
- organism
- Human islets and volunteers; separate insulin-cell and mouse experiments
- plain_language
- The receptor signal meets a messenger involved in insulin release.
- primary_references
- [melatonin-p27185156] Increased Melatonin Signaling Is a Risk Factor for Type 2 Diabetes. (2016). https://pubmed.ncbi.nlm.nih.gov/27185156/ DOI: 10.1016/j.cmet.2016.04.009
- tissue_or_cell_type
- MTNR1B signaling and insulin secretion
Melatonin: synthesis, receptors, circadian timing and nutrient interactions (2026-09-17) · lines 1111–1122
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Human islet genetics, cell experiments and recall-by-genotype intervention · source_derived_draft · unverified_draft
### melatonin-islet-camp Melatonin lowered cAMP in the insulin-secreting cells in the study. Condition category: normal nutrient_topic: Melatonin research collection; topical membership is not evidence of a direct dietary effect. plain_language: The receptor signal meets a messenger involved in insulin release. organism: Human islets and volunteers; separate insulin-cell and mouse experiments tissue_or_cell_type: MTNR1B signaling and insulin secretion experimental_model: Human islet genetics, cell experiments and recall-by-genotype intervention limitations: Genotype associations, cultured-cell manipulation and human intervention are separate evidence types. Do not generalize islet signaling to every tissue. exposure: Risk G allele, receptor overexpression and melatonin exposure evidence_span: {"source_cache": "artifacts/melatonin-research/27185156.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "61fcf7c730c1349e5b306e5c9cfcabcb2905290d7f8762cbfba06f2b5fccaded", "start_char": 0, "end_char": 1043, "text_sha256": "61fcf7c730c1349e5b306e5c9cfcabcb2905290d7f8762cbfba06f2b5fccaded"} [melatonin-p27185156] Increased Melatonin Signaling Is a Risk Factor for Type 2 Diabetes. (2016). https://pubmed.ncbi.nlm.nih.gov/27185156/ DOI: 10.1016/j.cmet.2016.04.009
Complete structured claim and evidenceNicotinic-acid activation of GPR109A/HCAR2 in the human cell-line assay lowered cAMP through a pertussis-toxin-sensitive pathway.
Experimental context and source evidence
- cross_nutrient
- Nicotinic acid (agonist); Cyclic adenosine monophosphate (measured_signal)
- evidence_span
- {"source_cache": "artifacts/niacin-clinical-sources/walters2009.abstract.txt", "locator": "Indexed primary abstract", "file_sha256": "2eb822534ed0c8ea9f71ec67288c302e4e375ed9e86cfe70b28f21ae65ffbd4b", "start_char": 0, "end_char": 1537, "text_sha256": "2eb822534ed0c8ea9f71ec67288c302e4e375ed9e86cfe70b28f21ae65ffbd4b"}
- experimental_model
- Human cell-line nicotinic-acid receptor signaling assay
- exposure
- Nicotinic-acid stimulation and beta-arrestin perturbation
- limitations
- Pharmacological receptor signaling, not an essential effect of every B3 precursor. Cell signaling and mouse physiology are distinct arms. Reduced fatty acids or flushing does not establish cardiovascular benefit.
- nutrient_topic
- Niacin research collection; topical membership is not evidence of a direct dietary effect. · Niacin (vitamin B3)
- organism
- Homo sapiens
- plain_language
- Nicotinic acid can act as a receptor signal as well as a vitamin precursor, switching down a cellular signaling molecule.
- primary_references
- [nia-clin-walters2009] beta-Arrestin1 mediates nicotinic acid-induced flushing, but not its antilipolytic effect, in mice. (2009). https://pubmed.ncbi.nlm.nih.gov/19349687/ DOI: 10.1172/jci36806
- tissue_or_cell_type
- Cultured human cells
Niacin: NAD metabolism, deficiency and nutrient interactions (2026-09-17) · lines 1291–1303
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Human cell-line nicotinic-acid receptor signaling assay · source_derived_draft · unverified_draft
### nia-clin-hcar2-camp Nicotinic-acid activation of GPR109A/HCAR2 in the human cell-line assay lowered cAMP through a pertussis-toxin-sensitive pathway. Condition category: normal nutrient_topic: Niacin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Nicotinic acid can act as a receptor signal as well as a vitamin precursor, switching down a cellular signaling molecule. organism: Homo sapiens tissue_or_cell_type: Cultured human cells experimental_model: Human cell-line nicotinic-acid receptor signaling assay limitations: Pharmacological receptor signaling, not an essential effect of every B3 precursor. Cell signaling and mouse physiology are distinct arms. Reduced fatty acids or flushing does not establish cardiovascular benefit. exposure: Nicotinic-acid stimulation and beta-arrestin perturbation cross_nutrient: Nicotinic acid (agonist); Cyclic adenosine monophosphate (measured_signal) evidence_span: {"source_cache": "artifacts/niacin-clinical-sources/walters2009.abstract.txt", "locator": "Indexed primary abstract", "file_sha256": "2eb822534ed0c8ea9f71ec67288c302e4e375ed9e86cfe70b28f21ae65ffbd4b", "start_char": 0, "end_char": 1537, "text_sha256": "2eb822534ed0c8ea9f71ec67288c302e4e375ed9e86cfe70b28f21ae65ffbd4b"} [nia-clin-walters2009] beta-Arrestin1 mediates nicotinic acid-induced flushing, but not its antilipolytic effect, in mice. (2009). https://pubmed.ncbi.nlm.nih.gov/19349687/ DOI: 10.1172/jci36806
Complete structured claim and evidence
Where it participates (unsigned role)
Copper-dependent PDE3B inhibition increased cAMP signaling and promoted lipolysis in 3T3-L1 adipocytes.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/copper-research/27272565.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f8b7e13cc6ef608ddb589779fa85430ca530508013e710f380f4020c3f2632c7", "start_char": 0, "end_char": 1018, "text_sha256": "f8b7e13cc6ef608ddb589779fa85430ca530508013e710f380f4020c3f2632c7"}
- experimental_model
- Copper manipulation, purified Pde3b assays and adipocyte signaling
- exposure
- Copper perturbation and Pde3b cysteine mutations
- limitations
- This cellular signaling result is not a human weight-loss trial. Copper toxicity and systemic distribution are not captured by increasing one cell-culture signal.
- nutrient_topic
- Copper research collection; topical membership is not evidence of a direct dietary effect. · Copper
- organism
- Mouse proteins and 3T3-L1 adipocytes; Atp7b mutant mouse context
- plain_language
- The prolonged signal encouraged fat breakdown in these cells.
- primary_references
- [copper-p27272565] Copper regulates cyclic-AMP-dependent lipolysis. (2016). https://pubmed.ncbi.nlm.nih.gov/27272565/ DOI: 10.1038/nchembio.2098
- tissue_or_cell_type
- Adipocytes and purified enzyme
Copper: transport, cuproenzymes, deficiency, excess and nutrient interactions (2026-09-17) · lines 1209–1220
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Copper manipulation, purified Pde3b assays and adipocyte signaling · source_derived_draft · unverified_draft
### copper-pde3b-camp-lipolysis Copper-dependent PDE3B inhibition increased cAMP signaling and promoted lipolysis in 3T3-L1 adipocytes. Condition category: normal nutrient_topic: Copper research collection; topical membership is not evidence of a direct dietary effect. plain_language: The prolonged signal encouraged fat breakdown in these cells. organism: Mouse proteins and 3T3-L1 adipocytes; Atp7b mutant mouse context tissue_or_cell_type: Adipocytes and purified enzyme experimental_model: Copper manipulation, purified Pde3b assays and adipocyte signaling limitations: This cellular signaling result is not a human weight-loss trial. Copper toxicity and systemic distribution are not captured by increasing one cell-culture signal. exposure: Copper perturbation and Pde3b cysteine mutations evidence_span: {"source_cache": "artifacts/copper-research/27272565.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f8b7e13cc6ef608ddb589779fa85430ca530508013e710f380f4020c3f2632c7", "start_char": 0, "end_char": 1018, "text_sha256": "f8b7e13cc6ef608ddb589779fa85430ca530508013e710f380f4020c3f2632c7"} [copper-p27272565] Copper regulates cyclic-AMP-dependent lipolysis. (2016). https://pubmed.ncbi.nlm.nih.gov/27272565/ DOI: 10.1038/nchembio.2098
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.