Freezing brain damage in its tracks: cooling drugs limit stroke injury in mice

Researchers developed a two-drug combination that induces hypothermia in mice, significantly limiting stroke-related brain damage. Published online on June 17, 2026, in Nature, the study details how the drugs, when administered within a specific timeframe after a stroke, lower metabolic rate and dilate blood vessels. This dual action reduces the brain's oxygen demand and improves blood flow to affected areas, thereby mitigating cell death. The combination therapy was tested on mice models of ischemic stroke, a condition caused by blocked blood flow to the brain. Results showed a substantial reduction in lesion volume and improved neurological function compared to control groups. The researchers observed that the hypothermia induced by the drugs was mild, around 32 degrees Celsius, and reversible, avoiding the severe side effects often associated with induced hypothermia. This approach offers a potential new therapeutic strategy for acute ischemic stroke, a leading cause of long-term disability and death worldwide. Further research is planned to assess the safety and efficacy of this combination in larger animal models before potential human trials.