topicNac Respiratory Meta-Analysis
claimAlthough cigarette smoking and exposure to air contaminants are the most important risk factors, oxidative stress (OS) has also been identified as an important mechanism in COPD development, progression, and exacerbations [,].
evidence level1
citationLópez-Denis Manuel (2026)
sourceAntioxidants as Therapeutic Tools in the Management of COPD: A Systematic Review with Meta-Analysis
topicNac Respiratory Meta-Analysis
claimIn these patients, lung epithelial and endothelial cells also produce increased ROS levels.
evidence level1
citationLópez-Denis Manuel (2026)
sourceAntioxidants as Therapeutic Tools in the Management of COPD: A Systematic Review with Meta-Analysis
topicNac Respiratory Meta-Analysis
claimOS contributes not only to chronic inflammation but also to increased resistance to corticosteroid therapies, accelerated senescence, and diminished tissue repair capacity, thereby accelerating the decline in lung function typical of the disease [,].
evidence level1
citationLópez-Denis Manuel (2026)
sourceAntioxidants as Therapeutic Tools in the Management of COPD: A Systematic Review with Meta-Analysis
topicNac Respiratory Meta-Analysis
claim1 2 3 4 3 3 4 5 6 7 Chronic Obstructive Pulmonary Disease (COPD) is a chronic disease characterized by persistent limitation to air flux and chronic respiratory inflammation leading to progressive loss of lung function.
evidence level1
citationLópez-Denis Manuel (2026)
sourceAntioxidants as Therapeutic Tools in the Management of COPD: A Systematic Review with Meta-Analysis
topicNac Respiratory Meta-Analysis
claimDespite robust evidence, NAC remains underutilized; greater clinical integration requires clearer guideline recommendations and clinician awareness.
evidence level2
citationBarne Monica (2026)
sourceN-acetylcysteine: evidence based consensus document on the therapeutic advantages in respiratory diseases (NECTAR)
topicNac Respiratory Meta-Analysis
claimThis review consolidates current evidence and expert consensus on NAC for clinical reference.
evidence level2
citationBarne Monica (2026)
sourceN-acetylcysteine: evidence based consensus document on the therapeutic advantages in respiratory diseases (NECTAR)
topicNac Respiratory Meta-Analysis
claimThis reduces mucus viscosity and facilitates improved mucociliary clearance.Anti-inflammatory effect of NAC: NAC modulates NF-κB signaling and scavenges reactive oxygen species (ROS), reducing inflammatory activation.
evidence level2
citationBarne Monica (2026)
sourceN-acetylcysteine: evidence based consensus document on the therapeutic advantages in respiratory diseases (NECTAR)
topicNac Respiratory Meta-Analysis
claim1 2 Figure 1 3 4 5 6 7 12 N-acetylcysteine (NAC), an acetylated derivative of L-cysteine, serves as a precursor of glutathione (GSH), a key pulmonary antioxidant.
evidence level2
citationBarne Monica (2026)
sourceN-acetylcysteine: evidence based consensus document on the therapeutic advantages in respiratory diseases (NECTAR)