Component
Transient receptor potential melastatin 8 / TRPM8 cold and menthol receptor
Transient receptor potential melastatin 8 / TRPM8 cold and menthol receptor. Species, exposure and limitations are retained in each linked claim.
6 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 it acts on
Cultured sensory neurons and intact sensory nerve fibres from TRPM8-deficient mice showed profoundly diminished responses to cold, demonstrating an essential and predominant role for TRPM8 in thermosensation over a wide range of cold temperatures.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/cold-research/17538622.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "94d6ed0e3d36f9530a7bb47b1635ee1fd438bb60aced91efd69d544b13d18300", "start_char": 0, "end_char": 1451, "text_sha256": "94d6ed0e3d36f9530a7bb47b1635ee1fd438bb60aced91efd69d544b13d18300"}
- experimental_model
- TRPM8-deficient mice with cultured sensory neurons, intact nerve fibre recording and behaviour
- exposure
- Ambient cooling below about 26 degrees C; menthol as a chemical agonist
- limitations
- A genetic loss-of-function study. TRPM8 mutant mice still avoid surfaces below 10 degrees C, so the channel is the principal but not the only cold detector.
- nutrient_topic
- Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. · Cold water immersion
- organism
- Mouse
- plain_language
- One ion channel is what actually reports cold to the nervous system.
- primary_references
- [cold-p17538622] The menthol receptor TRPM8 is the principal detector of environmental cold. (2007). https://pubmed.ncbi.nlm.nih.gov/17538622/ DOI: 10.1038/nature05910
- tissue_or_cell_type
- Primary afferent sensory neurons
Cold water immersion: cold sensing, heat production, the catecholamine axis and what repeated exposure changes (2026-09-19) · lines 65–76
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · TRPM8-deficient mice with cultured sensory neurons, intact nerve fibre recording and behaviour · source_derived_draft · unverified_draft
### cold-trpm8-cold-detector Cultured sensory neurons and intact sensory nerve fibres from TRPM8-deficient mice showed profoundly diminished responses to cold, demonstrating an essential and predominant role for TRPM8 in thermosensation over a wide range of cold temperatures. Condition category: normal nutrient_topic: Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. plain_language: One ion channel is what actually reports cold to the nervous system. organism: Mouse tissue_or_cell_type: Primary afferent sensory neurons experimental_model: TRPM8-deficient mice with cultured sensory neurons, intact nerve fibre recording and behaviour limitations: A genetic loss-of-function study. TRPM8 mutant mice still avoid surfaces below 10 degrees C, so the channel is the principal but not the only cold detector. exposure: Ambient cooling below about 26 degrees C; menthol as a chemical agonist evidence_span: {"source_cache": "artifacts/cold-research/17538622.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "94d6ed0e3d36f9530a7bb47b1635ee1fd438bb60aced91efd69d544b13d18300", "start_char": 0, "end_char": 1451, "text_sha256": "94d6ed0e3d36f9530a7bb47b1635ee1fd438bb60aced91efd69d544b13d18300"} [cold-p17538622] The menthol receptor TRPM8 is the principal detector of environmental cold. (2007). https://pubmed.ncbi.nlm.nih.gov/17538622/ DOI: 10.1038/nature05910
Complete structured claim and evidenceM8-B affected all thermoeffectors studied, including thermal preference, tail-skin vasoconstriction and brown fat thermogenesis, suggesting that TRPM8 is a universal cold receptor in the thermoregulation system, and it attenuated cold-induced c-Fos expression in the lateral parabrachial nucleus.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/cold-research/22323721.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "c0ead3b0097eaa75bf74d806e7f40bc61da4275cdd0af92735be9cad681ed3f0", "start_char": 0, "end_char": 1784, "text_sha256": "c0ead3b0097eaa75bf74d806e7f40bc61da4275cdd0af92735be9cad681ed3f0"}
- experimental_model
- Rats and mice with a selective TRPM8 antagonist given by several routes
- exposure
- M8-B intravenously, intrathecally or intracerebroventricularly, at constant or changing ambient temperature
- limitations
- On-target action is supported by the absence of effect in Trpm8-null mice. The peripheral site of action is inferred from route comparison, not from direct measurement at the nerve ending.
- nutrient_topic
- Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. · Cold water immersion
- organism
- Rat, mouse and human channels in vitro
- plain_language
- The same sensor feeds every cold defence: behaviour, blood vessels and heat production.
- primary_references
- [cold-p22323721] Pharmacological blockade of the cold receptor TRPM8 attenuates autonomic and behavioral cold defenses and decreases deep body temperature. (2012). https://pubmed.ncbi.nlm.nih.gov/22323721/ DOI: 10.1523/jneurosci.5606-11.2012
- tissue_or_cell_type
- Skin sensory neurons and thermoeffectors
Cold water immersion: cold sensing, heat production, the catecholamine axis and what repeated exposure changes (2026-09-19) · lines 104–115
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Rats and mice with a selective TRPM8 antagonist given by several routes · source_derived_draft · unverified_draft
### cold-trpm8-universal-receptor M8-B affected all thermoeffectors studied, including thermal preference, tail-skin vasoconstriction and brown fat thermogenesis, suggesting that TRPM8 is a universal cold receptor in the thermoregulation system, and it attenuated cold-induced c-Fos expression in the lateral parabrachial nucleus. Condition category: normal nutrient_topic: Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. plain_language: The same sensor feeds every cold defence: behaviour, blood vessels and heat production. organism: Rat, mouse and human channels in vitro tissue_or_cell_type: Skin sensory neurons and thermoeffectors experimental_model: Rats and mice with a selective TRPM8 antagonist given by several routes limitations: On-target action is supported by the absence of effect in Trpm8-null mice. The peripheral site of action is inferred from route comparison, not from direct measurement at the nerve ending. exposure: M8-B intravenously, intrathecally or intracerebroventricularly, at constant or changing ambient temperature evidence_span: {"source_cache": "artifacts/cold-research/22323721.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "c0ead3b0097eaa75bf74d806e7f40bc61da4275cdd0af92735be9cad681ed3f0", "start_char": 0, "end_char": 1784, "text_sha256": "c0ead3b0097eaa75bf74d806e7f40bc61da4275cdd0af92735be9cad681ed3f0"} [cold-p22323721] Pharmacological blockade of the cold receptor TRPM8 attenuates autonomic and behavioral cold defenses and decreases deep body temperature. (2012). https://pubmed.ncbi.nlm.nih.gov/22323721/ DOI: 10.1523/jneurosci.5606-11.2012
Complete structured claim and evidence
Where it participates (unsigned role)
M8-B decreased deep body temperature in Trpm8-positive mice and rats but not in Trpm8-null mice, and intravenous administration was more effective than intrathecal or intracerebroventricular, indicating a peripheral action.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- evidence_span
- {"source_cache": "artifacts/cold-research/22323721.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "c0ead3b0097eaa75bf74d806e7f40bc61da4275cdd0af92735be9cad681ed3f0", "start_char": 0, "end_char": 1784, "text_sha256": "c0ead3b0097eaa75bf74d806e7f40bc61da4275cdd0af92735be9cad681ed3f0"}
- experimental_model
- Rats and mice with a selective TRPM8 antagonist given by several routes
- exposure
- M8-B intravenously, intrathecally or intracerebroventricularly, at constant or changing ambient temperature
- limitations
- On-target action is supported by the absence of effect in Trpm8-null mice. The peripheral site of action is inferred from route comparison, not from direct measurement at the nerve ending.
- nutrient_topic
- Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. · Cold water immersion
- organism
- Rat, mouse and human channels in vitro
- plain_language
- Blocking the skin cold sensor makes the body cool down, because it never learns it is cold.
- primary_references
- [cold-p22323721] Pharmacological blockade of the cold receptor TRPM8 attenuates autonomic and behavioral cold defenses and decreases deep body temperature. (2012). https://pubmed.ncbi.nlm.nih.gov/22323721/ DOI: 10.1523/jneurosci.5606-11.2012
- tissue_or_cell_type
- Skin sensory neurons and thermoeffectors
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Cold water immersion: cold sensing, heat production, the catecholamine axis and what repeated exposure changes (2026-09-19) · lines 91–102
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Rats and mice with a selective TRPM8 antagonist given by several routes · source_derived_draft · unverified_draft
### cold-trpm8-blockade-temperature M8-B decreased deep body temperature in Trpm8-positive mice and rats but not in Trpm8-null mice, and intravenous administration was more effective than intrathecal or intracerebroventricular, indicating a peripheral action. Condition category: machinery_impairment nutrient_topic: Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. plain_language: Blocking the skin cold sensor makes the body cool down, because it never learns it is cold. organism: Rat, mouse and human channels in vitro tissue_or_cell_type: Skin sensory neurons and thermoeffectors experimental_model: Rats and mice with a selective TRPM8 antagonist given by several routes limitations: On-target action is supported by the absence of effect in Trpm8-null mice. The peripheral site of action is inferred from route comparison, not from direct measurement at the nerve ending. exposure: M8-B intravenously, intrathecally or intracerebroventricularly, at constant or changing ambient temperature evidence_span: {"source_cache": "artifacts/cold-research/22323721.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "c0ead3b0097eaa75bf74d806e7f40bc61da4275cdd0af92735be9cad681ed3f0", "start_char": 0, "end_char": 1784, "text_sha256": "c0ead3b0097eaa75bf74d806e7f40bc61da4275cdd0af92735be9cad681ed3f0"} [cold-p22323721] Pharmacological blockade of the cold receptor TRPM8 attenuates autonomic and behavioral cold defenses and decreases deep body temperature. (2012). https://pubmed.ncbi.nlm.nih.gov/22323721/ DOI: 10.1523/jneurosci.5606-11.2012
Complete structured claim and evidenceTRPM8-deficient animals showed clear behavioural deficits in discriminating between cold and warm surfaces and in responding to evaporative cooling, while still avoiding surfaces below 10 degrees C with reduced efficiency.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- evidence_span
- {"source_cache": "artifacts/cold-research/17538622.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "94d6ed0e3d36f9530a7bb47b1635ee1fd438bb60aced91efd69d544b13d18300", "start_char": 0, "end_char": 1451, "text_sha256": "94d6ed0e3d36f9530a7bb47b1635ee1fd438bb60aced91efd69d544b13d18300"}
- experimental_model
- TRPM8-deficient mice with cultured sensory neurons, intact nerve fibre recording and behaviour
- exposure
- Ambient cooling below about 26 degrees C; menthol as a chemical agonist
- limitations
- A genetic loss-of-function study. TRPM8 mutant mice still avoid surfaces below 10 degrees C, so the channel is the principal but not the only cold detector.
- nutrient_topic
- Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. · Cold water immersion
- organism
- Mouse
- plain_language
- Without the channel the animal cannot tell cold from warm, though extreme cold still registers somehow.
- primary_references
- [cold-p17538622] The menthol receptor TRPM8 is the principal detector of environmental cold. (2007). https://pubmed.ncbi.nlm.nih.gov/17538622/ DOI: 10.1038/nature05910
- tissue_or_cell_type
- Primary afferent sensory neurons
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Cold water immersion: cold sensing, heat production, the catecholamine axis and what repeated exposure changes (2026-09-19) · lines 78–89
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · TRPM8-deficient mice with cultured sensory neurons, intact nerve fibre recording and behaviour · source_derived_draft · unverified_draft
### cold-trpm8-null-behaviour TRPM8-deficient animals showed clear behavioural deficits in discriminating between cold and warm surfaces and in responding to evaporative cooling, while still avoiding surfaces below 10 degrees C with reduced efficiency. Condition category: machinery_impairment nutrient_topic: Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. plain_language: Without the channel the animal cannot tell cold from warm, though extreme cold still registers somehow. organism: Mouse tissue_or_cell_type: Primary afferent sensory neurons experimental_model: TRPM8-deficient mice with cultured sensory neurons, intact nerve fibre recording and behaviour limitations: A genetic loss-of-function study. TRPM8 mutant mice still avoid surfaces below 10 degrees C, so the channel is the principal but not the only cold detector. exposure: Ambient cooling below about 26 degrees C; menthol as a chemical agonist evidence_span: {"source_cache": "artifacts/cold-research/17538622.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "94d6ed0e3d36f9530a7bb47b1635ee1fd438bb60aced91efd69d544b13d18300", "start_char": 0, "end_char": 1451, "text_sha256": "94d6ed0e3d36f9530a7bb47b1635ee1fd438bb60aced91efd69d544b13d18300"} [cold-p17538622] The menthol receptor TRPM8 is the principal detector of environmental cold. (2007). https://pubmed.ncbi.nlm.nih.gov/17538622/ DOI: 10.1038/nature05910
Complete structured claim and evidenceTRPM8 ablation had no effect on total electromyographic muscle activity, on tachycardia, or on the drop in core temperature during cold exposure, with vehicle, compound 5 and TRPM8 knockout values closely similar across all three measures.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/dihydrocapsaicin-research/24005250.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "e9d99ac4cc7a031474975ac4d7f3bcff0df922dc01047fe94bd51817ef5b3fea", "start_char": 0, "end_char": 1963, "text_sha256": "e9d99ac4cc7a031474975ac4d7f3bcff0df922dc01047fe94bd51817ef5b3fea"}
- experimental_model
- Conscious mice exposed to 10 degree cooling with implanted electromyography electrodes, electrocardiography and abdominal temperature transmitters
- exposure
- TRPV1 agonist dihydrocapsaicin or TRPM8 inhibitor compound 5, with TRPM8 knockout mice as a control
- limitations
- This is the record that explains why the drug is clinically interesting rather than merely cooling: it removes the defence that makes physical cooling intolerable in a conscious patient.
- nutrient_topic
- Dihydrocapsaicin research collection; topical membership is not evidence of a direct clinical effect, and dihydrocapsaicin is recorded separately from capsaicin. · Dihydrocapsaicin
- organism
- Mouse
- plain_language
- Deleting the cold receptor changed nothing about the body’s answer to cold.
- primary_references
- [dhc-p24005250] Shivering and tachycardic responses to external cooling in mice are substantially suppressed by TRPV1 activation but not by TRPM8 inhibition. (2013). https://pubmed.ncbi.nlm.nih.gov/24005250/ DOI: 10.1152/ajpregu.00296.2013
- tissue_or_cell_type
- Back muscle, heart and core
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Conscious mice exposed to 10 degree cooling with implanted electromyography electrodes, electrocardiography and abdominal temperature transmitters · source_derived_draft · unverified_draft
### dhc-trpm8-ablation-does-nothing TRPM8 ablation had no effect on total electromyographic muscle activity, on tachycardia, or on the drop in core temperature during cold exposure, with vehicle, compound 5 and TRPM8 knockout values closely similar across all three measures. Condition category: normal nutrient_topic: Dihydrocapsaicin research collection; topical membership is not evidence of a direct clinical effect, and dihydrocapsaicin is recorded separately from capsaicin. plain_language: Deleting the cold receptor changed nothing about the body’s answer to cold. organism: Mouse tissue_or_cell_type: Back muscle, heart and core experimental_model: Conscious mice exposed to 10 degree cooling with implanted electromyography electrodes, electrocardiography and abdominal temperature transmitters limitations: This is the record that explains why the drug is clinically interesting rather than merely cooling: it removes the defence that makes physical cooling intolerable in a conscious patient. exposure: TRPV1 agonist dihydrocapsaicin or TRPM8 inhibitor compound 5, with TRPM8 knockout mice as a control evidence_span: {"source_cache": "artifacts/dihydrocapsaicin-research/24005250.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "e9d99ac4cc7a031474975ac4d7f3bcff0df922dc01047fe94bd51817ef5b3fea", "start_char": 0, "end_char": 1963, "text_sha256": "e9d99ac4cc7a031474975ac4d7f3bcff0df922dc01047fe94bd51817ef5b3fea"} [dhc-p24005250] Shivering and tachycardic responses to external cooling in mice are substantially suppressed by TRPV1 activation but not by TRPM8 inhibition. (2013). https://pubmed.ncbi.nlm.nih.gov/24005250/ DOI: 10.1152/ajpregu.00296.2013
Complete structured claim and evidenceThe TRPM8 inhibitor compound 5 at 20 mg/kg subcutaneously augmented the drop in core temperature during cold exposure at 8 degrees, and when combined with dihydrocapsaicin at 1.25 to 2.5 mg/kg the drop in core temperature was amplified and prolonged, so that activating warm receptors and simultaneously inhibiting cold receptors potentiated the effect.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/dihydrocapsaicin-research/24595220.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f8844f6469d0412a4fabe00ebd706924083ebc2759c847bff9da104ae4404a87", "start_char": 0, "end_char": 1882, "text_sha256": "f8844f6469d0412a4fabe00ebd706924083ebc2759c847bff9da104ae4404a87"}
- experimental_model
- Controlled prospective study in conscious unrestrained young and aged male mice with implanted thermocouples and wireless transponders
- exposure
- Dihydrocapsaicin 2 to 4 mg/kg subcutaneously, alone and combined with the TRPM8 inhibitor compound 5 at 20 to 30 mg/kg
- limitations
- Includes aged animals, which most of this collection does not. Its finding that the effect does not desensitise is the direct opposite of the 1982 rat result and the two are recorded as conflicting.
- nutrient_topic
- Dihydrocapsaicin research collection; topical membership is not evidence of a direct clinical effect, and dihydrocapsaicin is recorded separately from capsaicin. · Dihydrocapsaicin
- organism
- Mouse
- plain_language
- Blocking the cold sensor at the same time makes the cooling go deeper and last longer.
- primary_references
- [dhc-p24595220] Transient receptor potential melastatin 8 channel inhibition potentiates the hypothermic response to transient receptor potential vanilloid 1 activation in the conscious mouse. (2014). https://pubmed.ncbi.nlm.nih.gov/24595220/ DOI: 10.1097/ccm.0000000000000229
- tissue_or_cell_type
- Core temperature
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Controlled prospective study in conscious unrestrained young and aged male mice with implanted thermocouples and wireless transponders · source_derived_draft · unverified_draft
### dhc-trpm8-inhibition-potentiates The TRPM8 inhibitor compound 5 at 20 mg/kg subcutaneously augmented the drop in core temperature during cold exposure at 8 degrees, and when combined with dihydrocapsaicin at 1.25 to 2.5 mg/kg the drop in core temperature was amplified and prolonged, so that activating warm receptors and simultaneously inhibiting cold receptors potentiated the effect. Condition category: normal nutrient_topic: Dihydrocapsaicin research collection; topical membership is not evidence of a direct clinical effect, and dihydrocapsaicin is recorded separately from capsaicin. plain_language: Blocking the cold sensor at the same time makes the cooling go deeper and last longer. organism: Mouse tissue_or_cell_type: Core temperature experimental_model: Controlled prospective study in conscious unrestrained young and aged male mice with implanted thermocouples and wireless transponders limitations: Includes aged animals, which most of this collection does not. Its finding that the effect does not desensitise is the direct opposite of the 1982 rat result and the two are recorded as conflicting. exposure: Dihydrocapsaicin 2 to 4 mg/kg subcutaneously, alone and combined with the TRPM8 inhibitor compound 5 at 20 to 30 mg/kg evidence_span: {"source_cache": "artifacts/dihydrocapsaicin-research/24595220.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f8844f6469d0412a4fabe00ebd706924083ebc2759c847bff9da104ae4404a87", "start_char": 0, "end_char": 1882, "text_sha256": "f8844f6469d0412a4fabe00ebd706924083ebc2759c847bff9da104ae4404a87"} [dhc-p24595220] Transient receptor potential melastatin 8 channel inhibition potentiates the hypothermic response to transient receptor potential vanilloid 1 activation in the conscious mouse. (2014). https://pubmed.ncbi.nlm.nih.gov/24595220/ DOI: 10.1097/ccm.0000000000000229
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.