Think of the brain as a city with traffic lights that keep signals flowing smoothly. In a new study, researchers followed a clue about nitric oxide, a common chemical messenger, and found that, in some forms of autism, if it increases, it may act less like a helpful signal and more like a “stuck button.” When nitric oxide sets off this chain reaction, a key safeguard protein called TSC2 gets lost, and a major control system in cells, mTOR, which helps manage growth and protein-making, can surge into abnormal overdrive. The encouraging twist: when the researchers interrupted that specific step, the system calmed down, pointing to a more concrete “where to look” in the biology of autism and a possible direction for future therapies.

Researchers at the University of Waterloo have uncovered new insights into how estrogen protects against high blood pressure, a condition affecting more than one billion people worldwide. Using an advanced mathematical model of the cardiovascular and kidney systems, a team led by Anita Layton, Canada 150 Research Chair Laureate in Mathematical Biology and Medicine, found that estrogen’s ability to relax and widen blood vessels (vasodilation) plays the most significant role in reducing hypertension risk. The model also suggests that angiotensin receptor blockers may be more effective than ACE inhibitors for treating women with high blood pressure after menopause. The findings, published in Math Biosci., support more tailored and equitable approaches to women’s health care.

In a comprehensive review published in Research, investigators from Zhongda Hospital, School of Medicine, Southeast University propose an integrative framework centered on EG to explain this shift from defense to dysfunction. The authors synthesize evidence across single-cell multi-omics, bone-marrow niche remodeling, and immunometabolic reprogramming. By integrating single-cell biology with bedside indicators, this work clarifies why a protective program becomes maladaptive and outlines practical avenues for biomarker-guided stratification.