کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5738499 1615058 2017 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research articleDecrease in neuronal spine density in the postpartum period in the amygdala and bed nucleus of the stria terminalis in rat
ترجمه فارسی عنوان
مقاله پژوهشی کاهش تراکم ستون فقرات نورونی در دوره پس از زایمان در هسته آمیگدال و تخت ترمینال استری در رت
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
چکیده انگلیسی


- Spine density in the (extended) amygdala was investigated in the peripartum period in rat.
- The spine density was significantly decreased at 4 days after delivery.
- The presence of pups after delivery influenced the spine density in the BNST.

In pregnancy and the postpartum period, many women have emotional instability and some suffer from depression. The ovarian steroid hormone milieu is markedly changed during these periods, and this hormonal change may be an important cause of peripartum emotional instability. The amygdala is a central region of emotion, and the bed nucleus of the stria terminalis (BNST), which is considered to be the extended amygdala, is also involved in the emotional response. The amygdala and BNST are well characterized as target brain regions for ovarian steroid hormones, and this suggests that the functional response of neurons in these regions to hormonal fluctuation is affected in the peripartum period. In this study, we investigated the neuronal morphology in the central (CeA) and basolateral (BLA) nucleus of the amygdala and BNST on gestational days 15 (G15) (mid-gestation) and 20 (G20) (late gestation) and 4 days after delivery (P4) (early postpartum) in rat. Golgi staining showed that the dendritic spine density, and particularly the number of mature mushroom-type spines, in the CeA, BLA and BNST was significantly decreased at P4, compared with G15 and G20 and with virgin females in the estrous phase in the normal estrous cycle (Est). Interestingly, the presence of pups after delivery influenced the spine density in the BNST. The density was significantly decreased with pup presence compared with pup absence at P4, and compared with G15, G20 and Est. These results provide fundamental insights into the neuronal basis underlying emotional instability during pregnancy and postpartum.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 641, 22 February 2017, Pages 21-25
نویسندگان
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