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Review suggests TWEAK-Fn14 axis contributes to brain injury and cardiac dysfunction pathologyReview explores protein link between brain and heart diseases

AI-generated summary of the cited source, checked by automated accuracy review. How we work

Key Takeaway
Consider the TWEAK-Fn14 axis as a mechanistic pathway of interest in cardio-cerebrovascular disease.

A systematic review article examined the role of the TWEAK-Fn14 signaling axis in cardio-cerebrovascular diseases and brain-heart syndrome. The review summarized existing preclinical and mechanistic evidence but did not present new data. Details on the study population, sample size, specific interventions, comparators, and follow-up duration were not reported.

The main findings indicate that TWEAK and its receptor Fn14 are overexpressed in cerebral injury. Elevated levels are associated with blood-brain barrier damage, brain edema, neuroinflammation, neuronal apoptosis, and neurodegeneration. In heart diseases, the TWEAK-Fn14 axis is implicated in cardiomyocyte proliferation, inflammation, apoptosis, hypertrophy, fibrosis, contractile function disruption, and ventricular dilatation. No specific effect sizes, absolute numbers, or statistical measures were provided for these associations.

Safety and tolerability data were not reported. The authors note the axis has emerged as a promising therapeutic target for brain-heart syndrome, potentially informing co-treatment strategies. Key limitations include the nature of the evidence, which is a summary of existing literature without new clinical trial data. The review reports associations; causation is not established. The practice relevance is restrained to highlighting a potential mechanistic pathway for future research, not current clinical application.

Researchers reviewed existing scientific studies to understand the role of two proteins, TWEAK and Fn14, in diseases that affect both the brain and heart, a connection sometimes called brain-heart syndrome. The review did not involve new experiments with people or animals but instead compiled what is already known from past research.

The analysis found that levels of these proteins are often higher after brain injuries and in heart problems. In the brain, they appear to contribute to damage like swelling, inflammation, and nerve cell death. In the heart, they are linked to inflammation, scarring, and problems with how the heart muscle contracts.

Because this is a review article, it does not provide new data on how well treatments targeting these proteins might work in people. The authors suggest this protein pathway could be a future target for therapies, but no specific treatments or safety information is discussed here. Readers should understand this is an early-stage scientific summary that helps explain a biological connection, not a report on a ready-to-use treatment.

What this means for you:
Early research links specific proteins to both brain and heart damage, but this is not yet a treatment.

Study Details

Study typeSystematic review
EvidenceLevel 1
PublishedApr 2026
View Original Abstract ↓
Cardio-cerebrovascular diseases (CCVDs), notably stroke and coronary heart disease, represent the leading causes of mortality and disability worldwide. The intricate bidirectional feedback between the brain and heart in brain-heart syndrome (BHS) exacerbates clinical outcomes and imposes a significant economic burden on patients. The cytokine tumor necrosis factor-like apoptosis weak inducer (TWEAK) and its receptor fibroblast growth factor-inducible 14 (Fn14) are overexpressed in cerebral injury and cardiac dysfunction. Elevated levels of TWEAK and Fn14 contribute to the development of various brain diseases, including blood-brain barrier damage, brain edema, neuroinflammation, neuronal apoptosis, and neurodegeneration. Additionally, the TWEAK-Fn14 axis is implicated in numerous pathophysiological events in the heart, such as cardiomyocyte proliferation, inflammation, apoptosis, hypertrophy, fibrosis, contractile function disruption, and ventricular dilatation. Given its significant contributions to CCVDs, the TWEAK-Fn14 axis has also emerged as a promising therapeutic target for BHS. In this review, the critical roles of TWEAK-Fn14 in CCVDs and its potential interplay between the brain-heart axis in BHS were updated and discussed, which shed a new light on co-treatment of brain and heart and brain-heart syndrome.
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