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NCT Number: NCT06462287

EFFECT OF A SUBSTANCE P ANTAGONIST ON THE SECRETION OF ALDOSTERONE IN PATIENTS WITH OBSTRUCTIVE SLEEP APNEA SYNDROME AND ARTERIAL HYPERTENSION

Obstructive sleep apnea syndrome (OSAS) is associated with hyperaldosteronism with elevated plasma aldosterone/renin ratio, the physiopathological mechanism of which remains uncertain. This hyperaldosteronism contributes to the development of arterial hypertension and cardiovascular complications observed in patients with OSA, in particular by increasing arterial stiffness and heart rate variability. The frequent association of OSA with obesity with metabolic syndrome suggests that excess weight could be responsible for stimulation of aldosterone secretion independent of the renin/angiotensin system. Several studies indicate in particular that the production of mineralocorticoids by the adrenals could be activated by various adipocyte secretion products such as leptin and certain fatty acids after oxidation in the liver. In addition, a recent study showed that basal aldosterone secretion is also controlled by substance P released within the adrenal tissue itself by nerve fibers belonging to the splanchnic contingent. Thus, the oral administration of aprepitant, an antagonist of the substance P receptor (NK1 receptor), to healthy volunteers induces a reduction of approximately 30% in the overall secretion of aldosterone assessed by measuring aldosteronemia and 24-hour aldosteronuria. To the extent that OSA causes sympathetic hypertonia, the hypothesis is that the associated hyperaldosteronism could result from activation of the nervous control of aldosterone secretion, involving substance P and the NK1 receptor. If this is indeed the case, the administration of aprepitant to patients with OSA should result in a significant reduction in aldosteronemia.

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Key information

Conditions

Apnea, Obstructive Apnea Dyssomnias Nervous System Diseases Respiration Disorders Respiratory Tract Diseases Sleep Apnea Syndromes Sleep Apnea, Obstructive Sleep Disorders, Intrinsic Sleep Wake Disorders

Age range

18 year–75 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Subject with severe obstructive sleep apnea syndrome (OSAS) defined by an apnea and hypopnea index (AHI) ≥ 30/h on polysomnography or ventilatory polygraphy (requiring continuous positive airway pressure).
  • Subject with essential hypertension treated medically or by lifestyle and dietary measures or newly diagnosed (defined by SBP ≥ 140 and/or DBP ≥ 90 mmHg according to current SFHTA-HAS recommendations).
  • Patient's agreement to replace diuretics with another neutral antihypertensive treatment (which does not interfere with the renin-angiotensin system), to stop consuming licorice and its derivatives, 7 to 10 days before taking the treatment. experimental and throughout the study (if applicable)

Exclusion criteria

  • Minor subject or subject aged over 75 years
  • Criteria relating to associated pathologies leading to particular risks:
  • Subject presenting excessive daytime sleepiness with contraindication to driving (Epworth score > 16)
  • Uncontrolled severe cardiovascular disease: myocardial infarction or stroke in the last 6 months, unstable angina, significant valvular heart disease, heart failure (≥ class II of the NYHA classification), uncontrolled cardiac arrhythmia or significant conduction abnormalities. Knowledge of chronic renal insufficiency defined by a glomerular filtration rate < 60 mL/min/1.73m2 for more than 3 months) or moderate hepatic insufficiency defined by ALT and/or AST transaminases > 3N)
  • Epilepsy
  • Known acute infections linked to HIV, HBV or HCV
  • Active cancer currently being treated
  • Contraindications to placebo and aprepitant

Treatment and study plan

Aprepitant 125 and 80Mg Oral Capsule

Drug

Aprepitant 1 oral capsule time a day for 4 days (First day: 125 mg and the 3 last days: 80 mg)

Placebo

Drug

Placebo:1 oral capsule time a day for 4 days

Primary outcomes

  1. Rate of aldosterone secretion

    Time frame: Immediately after the intervention/procedure/surgery

    Measurement of 24-hour aldosteronuria before and after the administration of an NK1 receptor antagonist (aprepitant) or placebo in patients suffering from obstructive sleep apnea syndrome (OSAS) and arterial hypertension

Study contacts

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

Antoine-Guy Lopez

CONTACT

[email protected]

02 32 88 90 81

Nell Marty

CONTACT

[email protected]

02 32 88 82 65

Sponsors and collaborators

Lead sponsor

University Hospital, Rouen

Other

Registry information

Official study title

PILOT STUDY OF THE EFFECT OF A SUBSTANCE P ANTAGONIST, APREPITANT, ON THE SECRETION OF ALDOSTERONE IN PATIENTS WITH OBSTRUCTIVE SLEEP APNEA SYNDROME AND ARTERIAL HYPERTENSION

Acronym: APHOS3

Important dates

Study start
2024
Primary completion
2027
Study completion
2027
First posted
Jun 17, 2024
Registry last updated
May 11, 2026

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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