Network Meta-Analysis of Cognitive Impairment and miRNA Expression in Alzheimer's Disease Patients with Hearing Loss: A Systematic Review and Cross-Validation

Age-related hearing loss (HL) is a significant independent risk factor for Alzheimer's disease (AD), yet the molecular mechanisms underlying this comorbidity and the comparative efficacy of hearing interventions for cognitive outcomes remain unclear. This study aims to integrate clinical evidence and molecular data to address these gaps....

✦ Clinical Takeaway ✦

No actionable clinical change at this time; findings are mechanistic and preliminary, but they reinforce the importance of monitoring cognitive health in patients with age-related hearing loss.

✦ Why It Matters ✦

Clarifying the molecular link between hearing loss and Alzheimer's disease could eventually guide early screening and intervention strategies in audiology practice.

✦ Key Points ✦

01Network meta-analysis and systematic review design used to synthesize miRNA expression data across multiple studies.
02Identifies shared molecular pathways (miRNA signatures) potentially bridging age-related hearing loss and Alzheimer's disease.
03Cross-validation of cognitive impairment data strengthens confidence in the identified associations.
04Findings are mechanistic; no direct clinical protocol changes are supported yet.
05Supports the broader hypothesis that hearing loss is a modifiable risk factor for cognitive decline.

✦ Claims & Evidence ✦

ClaimEvidenceSupport

Specific miRNA expression patterns are shared between age-related hearing loss and Alzheimer's disease patients.

studypartially supported

Molecular mechanisms linking hearing loss to Alzheimer's disease risk can be identified via network meta-analysis of miRNA data.

studypartially supported

✦ Research metadata ✦

PMID: 42279176
DOI: 10.3390/jcm15114315.
Journal: Journal of Clinical Medicine
Publication type: meta_analysis
Evidence level: 1a
Population: Alzheimer's disease patients with age-related hearing loss (aggregated across included studies)
Intervention: miRNA expression profiling in the context of hearing loss
Comparator: Alzheimer's disease patients without hearing loss or cognitively normal controls (per included studies)

Primary outcomes

miRNA expression profiles associated with cognitive impairment; Molecular pathway overlap between hearing loss and Alzheimer's disease

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