Pathophysiological evaluation of cerecyte coil embolization for experimental broad neck aneurysms.

Cerecyte second-generation coils feature inner surfaces coated with an absorbable polyglycolic acid (PGA) polymer. Their use is expected to accelerate aneurysm organization, but time course data are limited. The present experimental study was therefore conducted to clarify the processes by pathological examination.

Delayed persistent estrus induced by continuous lighting after inadequate acclimation in rats.

While the normal estrous cycle of adequately acclimated female rats was replaced by a persistent estrus (PE) under continuous lighting, the onset of PE was delayed following several irregular cycles without acclimation or after acclimation for one week, suggesting that transportation induces a significant critical stress.