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Active, not recruitingNCT07346443Updated May 29, 2026

Mechanism Study of G Protein-coupled Receptor 81 in Multiple Organ Dysfunction of Heat Stroke

An observational study in Heat Stroke, sponsored by Second Affiliated Hospital of Wenzhou Medical University. Active, not recruiting at 1 site in China. Per ClinicalTrials.gov, last updated 2026-05-29.

Sponsored by Second Affiliated Hospital of Wenzhou Medical University · Observational

Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
100
Sex
All
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Study summary

Heat stroke is one of the common acute and critical conditions in the ICU, characterized by a high incidence and mortality rate, and there is still a lack of effective and precise treatment methods. The latest research indicates that G protein-coupled receptor 81 (GPR81), as an endogenous receptor of lactic acid, can regulate immune responses by up-regulating the expression of inflammatory factors and the chemotaxis of neutrophils, suggesting that the GPR81 receptor may play a potential key role in heat stroke. The investigators aim to reveal the position and key role of GPR81 in improving multiple organ dysfunction caused by heat stroke, and to clarify its specific molecular mechanism, with the goal of providing new ideas for the prevention and treatment of heat stroke based on lactate levels, a commonly used clinical indicator.

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Conditions studied

  • Heat Stroke

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Keywords

  • G protein-coupled receptor 81
  • Lactic Acid
  • heat stroke
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In context

Heat Stroke

21 studies on the registry are indexed under Heat Stroke; 10 are open to participants now.

Browse Heat Stroke studies →

Lead sponsor

Second Affiliated Hospital of Wenzhou Medical University is the lead sponsor of 137 studies on the registry; 46 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

patients who are diagnosed with heatstroke

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • 1) There was a clear history of high-temperature exposure before the onset of the disease; 2) Core body temperature ≥40℃ upon admission or within 2 hours of onset; 3) At least one abnormal symptom of the central nervous system occurs 4) Sign an form or have their legal representative agree to participate in the research.

Exclusion criteria

Exclusion Criteria:

  • 1) Suffering from central nervous system diseases; 2) Long-term use of anticoagulants; 3) Those who refuse to participate or withdraw their .
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

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Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
100 participants (estimated)
Patient registry
No

Groups and cohorts

  • heatstroke group

    heatstroke patient, no intervention

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What researchers measure

Primary outcomes

  1. The 28-day survival rate of patients with heat stroke

    For patients with heat stroke, if they die within 28 days, it indicates they are non-survivors; if they do not die within 28 days, it indicates they are survivors

    Time frame: Survival status will be assessed over a period of up to 28 days, starting from the date of hospital admission.

Secondary outcomes

  1. Plasma lactate levels in patients with heat stroke

    Collect the plasma lactic acid level each time when patients with heat stroke are hospitalized

    Time frame: Plasma lactate levels will be measured at admission and then daily during the hospital stay, for a period of up to 28 days.

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Study locations

1 site
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References and documents

Individual participant data

Plan to share: Yes — Study protocol and statistical analysis plan.

Supporting information: Statistical analysis plan

Time frame: Beginning 6 months after publication with no end date

Access criteria: Deidentifed participant data underlying the findings wil be made available upon reasonable request. proposls fordata acess should be directedto the corresponding author Shengwei Jin

Data sharing details ↗ · www.wzhealth.com

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 29, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT07346443
Responsible party
Sponsor
First posted
Jan 16, 2026
Start date
Nov 1, 2025
Primary completion
Dec 31, 2026 (estimated)
Completion
Jan 31, 2027 (estimated)
Last update
May 29, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Nov 2025. You cannot join it, but the record below documents what was studied.

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Discussion

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