People who carry the APOE2 version of the apolipoprotein E gene are more likely to live to advanced age and are partly protected against Alzheimer's disease, but scientists have struggled to explain why. A new study from the Buck Institute for Research on Aging, now published in Aging Cell, offers a mechanistic answer: APOE2 helps human neurons keep their DNA intact and resist becoming senescent, a damaged, dysfunctional state that accumulates with age and contributes to neurodegeneration.

A Chinese Medical Journal study reveals Rhein, a rhubarb-derived compound, protects against severe acute pancreatitis-associated intestinal injury by activating peroxisome proliferator-activated receptor γ (PPARγ) to suppress NOD-like receptor thermal protein domain associated protein 3 (NLRP3) inflammasome and reprogram macrophage polarization from pro-inflammatory M1 to anti-inflammatory M2 phenotype. Rhein restored intestinal barrier integrity and reduced endotoxemia—effects abolished by PPARγ inhibition. This identifies the PPARγ/NLRP3/macrophage axis as a promising therapeutic target for SAP complications.

A new study shows that a simple measurement from routine chest X-rays can help predict survival among patients with lung cancer and breathing disorders. Researchers found that lower diaphragmatic dome height (DDH) before surgery was associated with poorer long-term outcomes and higher respiratory-related deaths. This is the first study to establish DDH as a practical prognostic marker, offering a low-cost, widely accessible way to identify high-risk patients and guide treatment decisions.