Evening aspirin may blunt the morning platelet surge better than morning dosing

Key Findings

😴 A Sleep Drug for Night-Shift Workers Gets Its First Real Test

• A small randomized controlled trial tested lemborexant — a drug that blocks the brain's wakefulness-promoting orexin system — against placebo in night-shift workers trying to sleep during the day.
• The drug targets the biological mechanism that keeps the internal clock fighting daytime sleep, which is a different approach than older sedatives and one with a cleaner rationale for shift workers specifically.

🧠 Glioblastoma Has a Clock — and It Might Be Exploitable

• Brain tumor cells express daily rhythms in gene activity and sensitivity to chemotherapy, according to a review in one of oncology's top journals. That means the same drug dose could hit harder — or softer — depending on when it's given.
• With over 500 active clinical trials for glioblastoma and a median survival still stuck at 15 months, the authors argue it's time to start controlling for time-of-day as a variable in trial design.

🦟 Mosquito Metabolism Has a Season Setting — and a Clock Gene Controls It

• In Culex pipiens mosquitoes, 27 metabolites oscillated in synchronized daily rhythms during the reproductive season, but only 11 did so during winter dormancy. Knocking out the clock gene cycle collapsed that synchronization under both conditions.
• The finding connects circadian clock machinery to seasonal metabolic shifts, with potential implications for understanding how mosquitoes regulate insulin signaling and energy use across their life cycle.

👶 A Mother's Daily Rhythm Shapes Offspring Infection Risk — in Worms

• In C. elegans, mothers entrained to alternating light/temperature cycles rhythmically altered what fraction of their offspring entered a high-susceptibility immune state before any infection occurred. The effect depended on a clock-related gene and was transmitted across generations.
• The twist: the high-susceptibility marker (irg-5) is normally associated with immune activation, yet animals expressing it at high baseline levels were more vulnerable to bacterial infection — suggesting pre-infection immune state and infection-response immune activity are not the same thing.

🔬 Night-Shift Nurses Show Measurable Clock Gene Disruption in Blood Cells

• Female healthcare workers on prolonged night shifts showed dysregulated expression of four circadian clock genes — CLOCK, TEF, PER1, and PER3 — in a study that experimentally validated a pattern previously identified through computational analysis.
• The researchers also flagged YY1, a non-canonical circadian transcription factor, as part of the remodeled network, suggesting the disruption goes beyond the core clock machinery.

🌿 Light Pollution Reshuffles Alpine Pollinator Networks Day and Night

• In a field experiment on the Tibetan Plateau, artificial light at night cut moth visits to flowers by 57.5% and reduced overall nighttime pollination network nestedness by nearly 65%. Flies partially filled the gap, increasing nocturnal visits by 180%.
• The disruption didn't stay in the dark. During the following day, butterfly and beetle visits dropped while fly visits rose, suggesting that nighttime light exposure cascades into daytime ecological interactions.