Plasma adrenomedullin and obstructive sleep apnea

Robert Wolk1, Anna Svatikova, Maria E Otto

  • 1Mayo Clinic, Rochester, Minnesota, USA.

Abstract

Insights

Obstructive sleep apnea (OSA) does not significantly alter adrenomedullin (ADM) levels. Plasma ADM remained unchanged overnight and was unaffected by continuous positive airway pressure treatment in OSA patients.

Area of Science:

  • Cardiovascular Physiology
  • Sleep Medicine
  • Endocrinology

Background:

  • Obstructive sleep apnea (OSA) is frequently linked to hypertension.
  • Adrenomedullin (ADM), a vasorelaxing peptide, might mitigate the effects of vasopressor substances released during OSA.
  • Investigating ADM’s role in OSA is crucial for understanding associated cardiovascular risks.

Purpose of the Study:

  • To determine the impact of obstructive sleep apnea (OSA) on plasma adrenomedullin (ADM) levels.
  • To assess acute and chronic changes in ADM associated with OSA and its treatment.

Main Methods:

  • Plasma ADM levels were measured in 15 OSA patients and 10 controls at three time points: evening, early morning during untreated OSA, and morning after positive airway pressure (PAP) treatment.
  • Continuous positive airway pressure (CPAP) was administered for 4 hours.

Main Results:

  • Baseline plasma ADM levels were comparable between OSA patients and controls.
  • ADM levels did not exhibit significant overnight changes in either group.
  • Continuous positive airway pressure treatment did not affect plasma ADM concentrations.

Conclusions:

  • Obstructive sleep apnea does not appear to have significant acute or chronic effects on plasma ADM levels.
  • The findings suggest ADM may not play a direct role in the cardiovascular complications associated with OSA.
  • Further research is needed to explore other potential biomarkers in OSA-related hypertension.

Related Concept Videos

Sleep Apnea01:21

Sleep Apnea

Sleep apnea is a condition where breathing stops intermittently during sleep, often leading to significant health issues. Each episode can last from 10 to 20 seconds or more and is frequently accompanied by a brief arousal from sleep. This disturbance, largely unnoticed by the individual, can lead to severe daytime fatigue. Commonly, individuals seek help after being informed by their partners about loud snoring and noticeable breathing pauses during sleep.
The condition is more prevalent among...
Adrenergic Agonists: Therapeutic Uses01:30

Adrenergic Agonists: Therapeutic Uses

Adrenergic agonists have diverse therapeutic uses across various medical conditions and emergencies.
Emergency and Intensive Care Unit (ICU) applications: Pressor agents increase blood pressure, heart rate, and contractility in shock and organ failure situations. Dopamine can induce vasodilation and stimulate adrenoceptors. Endogenous catecholamines are effective in treating cardiogenic shock. α2-agonists like clonidine can reverse anesthesia-induced hypertension.
Allergies and anaphylaxis:...
Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
Other Pulmonary Disorders01:17

Other Pulmonary Disorders

Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.
Adrenergic Agonists: Direct-Acting Agents01:30

Adrenergic Agonists: Direct-Acting Agents

Drugs that mimic the action of endogenous catecholamines like noradrenaline and adrenaline are called adrenergic agonists or sympathomimetics. Based on their mechanism of action, sympathomimetics can be classified as direct-, indirect-, or mixed-acting sympathomimetics. Direct-acting adrenergic agonists activate adrenoceptors without affecting presynaptic neurons, making them independent of neuronal catecholamine-depleting agents like reserpine and guanethidine.
These agents can be classified...
Adrenal Gland Disorders01:27

Adrenal Gland Disorders

Adrenal gland disorders manifest when the production of adrenal hormones deviates from the norm, resulting in either excessive or insufficient concentrations.
Adrenal insufficiency, characterized by insufficient cortisol and aldosterone production, leads to conditions like Addison's disease. This disorder, affecting the adrenal cortex, exhibits symptoms such as skin bronzing, dehydration, low blood pressure, fatigue, and weight loss. Congenital adrenal hyperplasia, a genetic ailment causing...