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Systematic review examines mitochondrial dysfunction and neuroinflammation in sepsis-associated encephalopathy

Systematic review examines mitochondrial dysfunction and neuroinflammation in sepsis-associated ence…
Photo by Steve A Johnson / Unsplash
Key Takeaway
Note that targeting the mitochondrial-neuroinflammatory axis offers a promising paradigm for developing effective interventions to improve neurological outcomes in septic patients.

A systematic review was conducted to investigate the role of mitochondrial dysfunction and neuroinflammation in sepsis-associated encephalopathy. The analysis identified several pharmacological agents, including molecular hydrogen, SS-31, Mdivi-1, and MCC950, as potential interventions targeting these specific pathological mechanisms. The review notes that mitochondrial dysfunction and neuroinflammation are emerging as central, interconnected drivers of the condition.

Critical quantitative data regarding the study populations, sample sizes, and specific primary outcomes were not reported in the source material. Similarly, information regarding the comparators used in the underlying studies, follow-up durations, and secondary outcomes was unavailable. This lack of detail prevents a comprehensive assessment of the efficacy of the identified medications.

Safety and tolerability profiles for these interventions were not reported, and no adverse events, serious adverse events, or discontinuations were documented in the provided evidence. Funding sources and potential conflicts of interest were also not reported. The review highlights that targeting the mitochondrial-neuroinflammatory axis offers a promising paradigm for developing effective interventions to improve neurological outcomes in septic patients.

Despite the theoretical promise, the current evidence base is incomplete. The absence of reported data on populations, outcomes, and safety limits the ability to draw definitive clinical conclusions. Further research is required to validate these findings and establish the practice relevance of these emerging therapeutic strategies.

Study Details

Study typeSystematic review
EvidenceLevel 1
PublishedApr 2026
View Original Abstract ↓
Sepsis-associated encephalopathy (SAE) is a devastating neurological complication of sepsis, leading to diffuse brain dysfunction, long-term cognitive deficits, and increased mortality. Its pathogenesis is complex, with mitochondrial dysfunction and neuroinflammation emerging as central, interconnected drivers. This review systematically elucidates the pathogenic crosstalk between these two processes. We detail how dysregulated mitochondrial dynamics (e.g., Drp1-mediated fission), impaired biogenesis (via the proliferator-activated receptor-gamma coactivator-1α axis), oxidative stress, and the activation of mitochondria-dependent cell death pathways (ferroptosis, pyroptosis) contribute to neuronal injury. Concurrently, microglial activation, particularly through the NOD-, LRR- and pyrin domain-containing protein 3 (NLRP3) inflammasome, creates a vicious cycle that exacerbates mitochondrial damage and synaptic loss. Furthermore, we summarize emerging therapeutic strategies that target this mitochondrial-neuroinflammatory axis, including molecular hydrogen, mitochondria-targeted peptides (SS-31), natural compounds, and specific inhibitors (e.g., Mdivi-1, MCC950). The integration of recent insights on the gut-brain axis and cerebral metabolomics further expands the therapeutic landscape. Ultimately, targeting this core axis offers a promising paradigm for developing effective interventions to improve neurological outcomes in septic patients.
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