Clinical Scorecard: Is Muscle Strength an Underappreciated Factor in Patients with Mild Autonomous Cortisol Secretion?
At a Glance
Category
Detail
Condition
Mild Autonomous Cortisol Secretion (MACS)
Key Mechanisms
Mild hypercortisolism linked to skeletal muscle atrophy and weakness through reduced protein synthesis, activation of proteolytic pathways, mitochondrial dysfunction, and impaired neuromuscular transmission.
Target Population
Patients with adrenal incidentalomas associated with MACS.
Care Setting
Endocrinology Unit, Hospital setting.
Key Highlights
Higher prevalence of osteopenia and osteoporosis in MACS patients (61.9%) compared to NFAA (28.6%) and controls (25%).
Significantly reduced muscle strength in MACS patients as assessed by MRC scores.
Quality of life scores trend toward greater impairment in MACS group.
No significant differences in fat-free mass, muscle mass, or fat mass among groups.
MACS patients exhibit higher post-dexamethasone suppression test cortisol concentrations.
Guideline-Based Recommendations
Diagnosis
Classify patients with post-DST cortisol levels >1.8 µg/dL as having MACS.
Management
Consider adrenalectomy for selected patients with MACS to improve cardiometabolic outcomes.
Monitoring & Follow-up
Regular assessment of muscle strength and quality of life in patients with MACS.
Risks
Increased risk of frailty and adverse health outcomes associated with prolonged exposure to subclinical cortisol excess.
Patient & Prescribing Data
Adults with newly diagnosed non-aldosterone-producing adrenocortical adenomas (NAPACAs).
Potential improvement in selected cardiometabolic outcomes after adrenalectomy in carefully selected patients.
Clinical Best Practices
Integrate body composition analysis and functional assessments in routine evaluations of patients with MACS.
Utilize validated tools for assessing frailty and muscle strength.
by Martina Romanisio, Chiara Mele, Sara Sturnia, Carola Ciamparini, Rosa Pitino, Alice Ferrero, Lorenza Scotti, Madalina Elena Iftimie, Gianluca Aimaretti, Paolo Marzullo, Flavia Prodam, Marina Caputo
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