Letter to the Editor: Tumor necrosis factor-α signaling and β-cell apoptosis in acute pancreatitis - integrating molecular mechanisms and metabolic implications

The recent study by Chen et al, published in the World Journal of Gastroenterology, provides valuable evidence that tumor necrosis factor-alpha (TNF-alpha) contributes to acute metabolic disorder after acute pancreatitis through Bax/Bcl-2-mediated beta-cell apoptosis. Their study elegantly combines clinical observations with experimental data, but the biological framework underlying TNF-alpha signaling in beta-cell damage is more complex than a single apoptotic pathway. TNF-alpha appears to function as a central hub, linking nuclear factor kappa B (NF-kappa B) activation, oxidative and endoplasmic reticulum stress, and cytokine cross-talk, all of which influence beta-cell survival. The apoptotic cascade described by Chen et al can be viewed as one effector branch of this wider network. Moreover, TNF-alpha affects key metabolic aspects of beta-cell function, including mitochondrial activity and GLUT2-dependent glucose handling, suggesting that metabolic dysfunction and apoptosis may arise together as part of an integrated stress response. By briefly outlining these additional mechanisms, this article places TNF-alpha within a broader inflammatory-metabolic context that complements and extends their interpretation.