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Review of ferroptosis role in postoperative cognitive dysfunction in older surgical patientsAging and surgery may trigger brain cell death in older patients

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Key Takeaway
Note that ferroptosis role in postoperative cognitive dysfunction remains correlative and preclinical.

This narrative review explores the potential involvement of ferroptosis in postoperative cognitive dysfunction affecting older surgical patients. The scope includes evaluating whether this cellular process serves as a primary cause of neuronal damage or a secondary effect of pre-existing injury. The authors highlight that current data is largely correlative, preventing definitive causal conclusions about the mechanism of neuronal death in this context.

The review indicates that most therapeutic strategies targeting ferroptosis are currently preclinical. Consequently, the direct translation of these findings into clinical practice is limited by the lack of established causality. The authors emphasize that rigorous proof of ferroptosis as a proximal driver is required before new diagnostic or treatment avenues can be reliably pursued.

Elucidating the role of ferroptosis may open new avenues for early diagnosis, targeted prevention, and effective treatment, provided that causality can be rigorously established. Until then, clinicians should interpret these findings with caution, recognizing the significant gaps in understanding the exact pathophysiological sequence in this population.

Older patients face a tough challenge after surgery. They often experience confusion or memory loss known as postoperative cognitive dysfunction. This review looks at a specific process called ferroptosis. Think of ferroptosis as a type of cell death that happens when iron builds up inside cells. Scientists are trying to understand if this process kills brain cells directly or if it happens later as a result of other damage.

The available evidence is largely correlative. This means the studies show a connection between these factors and brain cell loss, but they do not prove one causes the other. It remains undetermined whether ferroptosis acts as a proximal driver of neuronal death or as a late consequence of pre-existing damage.

Most therapeutic strategies remain preclinical. This means current treatments are still being tested in labs rather than on people. Elucidating the role of ferroptosis may open new avenues for early diagnosis, targeted prevention, and effective treatment, provided that causality can be rigorously established.

What this means for you:
Scientists are unsure if a specific cell death process causes brain issues after surgery or just follows other damage.

Study Details

Study typeSystematic review
EvidenceLevel 1
PublishedMay 2026
View Original Abstract ↓
Postoperative cognitive dysfunction (POCD) is a common complication in older surgical patients. While its pathogenesis remains unclear, ferroptosis—an iron-dependent form of cell death driven by lipid peroxidation—has emerged as a key mechanism in neurodegeneration. This review proposes that aging creates a ferroptosis-prone environment in the brain through iron dyshomeostasis, impaired antioxidant defenses, and enrichment of polyunsaturated fatty acids, and that surgical trauma and anesthetic exposure may trigger ferroptosis by activating interconnected pathways such as neuroinflammation, blood-brain barrier disruption, and oxidative stress, leading to neuronal injury in cognition-critical regions like the hippocampus. However, the available evidence is largely correlative, and whether ferroptosis acts as a proximal driver of neuronal death or as a late consequence of pre-existing damage remains undetermined. We dissect the core molecular machinery (GPX4, ACSL4, NCOA4, Nrf2) and emerging regulators (MD2/Hepcidin, CPT1A, RUNX1/RBM47/cGAS-STING, miRNAs, mitophagy, gut microbiota-exosome axis). Therapeutic strategies including iron chelators, lipophilic antioxidants, natural products, physical therapies, and nanomaterials are reviewed, but most remain preclinical. Elucidating the role of ferroptosis may open new avenues for early diagnosis, targeted prevention, and effective treatment, provided that causality can be rigorously established.
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