EGR2 and NLRP3 Pathways in Obstructive Sleep Apnea-Related Cognitive and Mood Disorders
Regulatory Mechanisms of EGR2 and NLRP3 Inflammatory Pathways in Cognitive Impairment and Depressive-Anxiety-Like Behaviors Associated With Obstructive Sleep Apnea-Hypopnea Syndrome
Xinhua Hospital, Shanghai Jiao Tong University School of Medicine
1,000 participants
Jul 1, 2025
OBSERVATIONAL
Conditions
Summary
Obstructive sleep apnea-hypopnea syndrome (OSAS) is a common disorder in which repeated airway blockages during sleep lead to low oxygen levels, inflammation, and disrupted sleep. Many OSAS patients-both children and adults-experience problems with memory, attention, and mood, such as anxiety or depression. However, the exact molecular drivers of these brain changes are not fully understood. This observational study will enroll: Children (ages 2-18) and adults (\>18 years) with OSAS, as well as age- and sex-matched healthy volunteers. Clinical assessments: Children will undergo routine ENT examinations (including nasal endoscopy and X-rays); adults will have an overnight sleep study (polysomnography). All participants will complete questionnaires on sleepiness (e.g., ESS), mood (PHQ-9, GAD-7), and cognitive screening (MoCA for adults, age-appropriate scales for children). Sample collection: A small blood draw (3 mL) and, when applicable (e.g., adults undergoing surgery), a tiny subcutaneous fat biopsy. Saliva samples will also be collected. Laboratory tests: Measure expression levels of two key inflammatory pathway genes-EGR2 and NLRP3-in blood cells, saliva, and fat tissue using RNA sequencing, RT-qPCR, and Western Blot. Correlate these molecular markers with sleep parameters (AHI, oximetry), cognitive scores, and mood scores. Data analysis: Develop and validate machine-learning models that integrate data from multiple tissues to predict who is at highest risk for cognitive or mood disturbances.
Eligibility
Plain Language Summary
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Interventions
Peripheral blood collection \& PBMC isolation: Children: 3 mL venous blood drawn from the right antecubital vein preoperatively; Adults: 3 mL fasting venous blood drawn the morning after PSG. Collected in EDTA tubes; PBMCs separated via Ficoll-Paque density gradient. Flow cytometry: 1×10⁶ PBMCs stained for CD14/CD16, HLA-DR, CD11b, CD80/CD86, CD163/CD206. RNA extraction: Remaining PBMCs lysed in TRIzol and stored at -80 °C for RT-qPCR of EGR2, NLRP3, and downstream genes Serum/plasma: Within 1 h of collection, centrifuge at 400 × g for 10 min at 4 °C; 1 mL used for ELISA quantification of TNF-α, IL-6, IL-1β, CCL2, IL-17, CRP; remainder stored at -80 °C for future proteomic or metabolomic assays Saliva sampling \& processing: 2-3 mL unstimulated saliva expectorated into sterile tubes, kept at 4 °C, processed (centrifuged, aliquoted) within 2 h, then stored at -80 °C.
Subcutaneous fat biopsy (adults undergoing surgery): 100-200 mg obtained intraoperatively, placed in RNAlater at 4 °C for 24 h, then frozen at -80 °C for downstream RNA-seq, RT-qPCR, and Western blot analyses of EGR2, NLRP3, and related inflammatory markers
Locations(1)
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NCT07120711