Matsuoka M, Mori Y, Ichikawa M
Laboratory of Veterinary Ethology, University of Tokyo, Japan.
Neuroreport. 1996 Oct 2;7(14):2347-52. doi: 10.1097/00001756-199610020-00014.
Adult male hamsters and rats were reared for 2 months in either an isolated condition (IC) or a social condition (SC). The lengths of synaptic active zones (SAZ) of synapses in the granule cell layer of the accessory olfactory bulb were measured as an indicator of synaptic size in perforated and non-perforated synapses. In the hamster, the SAZ of both perforated and non-perforated synapses were larger in animals reared in the SC, compared to those of animals reared in the IC. In the rat, only the SAZ of non-perforated synapses was larger in the SC animals, compared with those reared in IC. These results indicate that rearing conditions affect synaptic structure, with the morphological change being more pronounced in hamsters than in rats.
成年雄性仓鼠和大鼠在隔离条件（IC）或社交条件（SC）下饲养2个月。测量副嗅球颗粒细胞层突触的突触活性区（SAZ）长度，作为穿孔和非穿孔突触中突触大小的指标。在仓鼠中，与在IC条件下饲养的动物相比，在SC条件下饲养的动物中，穿孔和非穿孔突触的SAZ都更大。在大鼠中，与在IC条件下饲养的动物相比，只有SC条件下饲养的动物中非穿孔突触的SAZ更大。这些结果表明，饲养条件会影响突触结构，形态变化在仓鼠中比在大鼠中更明显。
