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NCT Number: NCT04940962

Translational Study Using Human Abdominal Adipose Tissue Biopsies to Investigate the Role of Cannabinoid Receptor 1 (CB1) in Controlling Endocannabinoid and Adipokine Secretion

Abdominal obesity and type 2 diabetes are associated with the hyperactivation of the endocannabinoid system. Several animal and human studies indicate that circulating endocannabinoid (EC) levels are correlated with body fat. Thus, adipose tissue, which possesses the enzymatic machinery for the synthesis of ECs, could be the main producer of plasma ECs.

Today, it is clearly established that stimulation of the endocannabinoid system, via activation of cannabinoid receptor 1 (CB1s) located in the brain, leads to increased food intake and weight gain. Moreover, peripheral CB1s present in organs such as the liver, muscles and adipose tissue are involved in the establishment of metabolic deregulations linked to obesity (steatosis, insulin resistance, dyslipidemia).

Thus, ECs produced by adipose tissue could play a key role in the regulation of carbohydrate-lipid homeostasis through their autocrine or paracrine actions by activating central and peripheral CB1s. Therefore, the objective of this study is to:

1. clarify whether obesity, associated or not with diabetes, leads to an overproduction of ECs (specifying which ones) by visceral or subcutaneous adipose tissue 2. to determine whether blocking CB1s with new peripherally acting antagonists can lead to a reduction in the production of ECs by adipose tissue.

This study will also provide an opportunity to evaluate the production of adipokines and cytokines involved in the control of energy homeostasis under the different experimental conditions.

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Key information

Conditions

Diabete Type 2 Abdominal Obesity Body Weight Diabetes Mellitus Diabetes Mellitus, Type 2 Endocrine System Diseases Glucose Metabolism Disorders Metabolic Diseases Nutrition Disorders Nutritional and Metabolic Diseases Obesity Obesity, Abdominal Overnutrition Overweight Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

18 year–80 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Controls:
  • men or post-menopausal women aged between 18 and 80
  • gave oral consent
  • to undergo visceral surgery

Non-diabetic obese subjects:

  • men or post-menopausal women aged between 18 and 80
  • BMI > 30
  • gave oral consent
  • to undergo visceral surgery

Obese diabetic subjects:

  • men or post-menopausal women aged between 18 and 80
  • type 2 diabetic not treated with Insulin or GLP-1 agonist
  • BMI > 30
  • gave oral consent
  • to undergo visceral surgery

Exclusion criteria

  • Controls:
  • Person not covered by national health insurance.
  • BMI > 30
  • diabetes
  • chronic inflammatory disease
  • cancer undergoing chemotherapy or chemotherapy less than a year old
  • digestive cancer with recent weight loss (≥10%) and/or malnutrition
  • known metastatic cancer
  • cancer undergoing long-term hormonal treatment
  • protected adult

Non-diabetic obese subjects:

  • Person not covered by national health insurance
  • diabetes
  • chronic inflammatory disease
  • cancer undergoing chemotherapy or chemotherapy less than a year old
  • digestive cancer with recent weight loss (≥10%) and/or malnutrition
  • known metastatic cancer
  • cancer undergoing long-term hormonal treatment
  • protected adult

Obese diabetic subjects:

  • Person not covered by national health insurance
  • chronic inflammatory disease
  • cancer undergoing chemotherapy or chemotherapy less than a year old
  • digestive cancer with recent weight loss (≥10%) and/or malnutrition
  • known metastatic cancer
  • cancer undergoing long-term hormonal treatment
  • type 1 diabetes
  • secondary diabetes
  • protected adult

Treatment and study plan

Sampling of adipose tissue

Procedure

Removal of less than 1 cm3 of adipose tissue during visceral surgery

Primary outcomes

  1. Kinetics of the appearance of endocannabinoids produced by visceral adipose tissue explants in culture medium estimated by the area under the curve in obese subjects and in controls.

    Time frame: 12 hours

    The assay will be performed using a technique of liquide chromatography coupled to a mass spectrometer.

Study contacts

Contact information is provided by the study sponsor or research team.

Pablo ORTEGA DEBALLON

CONTACT

[email protected]

03.80.29.37.47

Sponsors and collaborators

Lead sponsor

Centre Hospitalier Universitaire Dijon

Other

Registry information

Acronym: ENDOCATA

Important dates

Study start
2021
Primary completion
2027
Study completion
2027
First posted
Jun 28, 2021
Registry last updated
Jul 28, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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