دانلود مقاله ISI انگلیسی شماره 71191
ترجمه فارسی عنوان مقاله

استراژویول با استفاده از گیرنده استروژن هیپوکامپ من، حافظه تشخیصی را در موش های ماده سوئیس افزایش می دهد؟

عنوان انگلیسی
Estradiol enhances object recognition memory in Swiss female mice by activating hippocampal estrogen receptor α
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی ترجمه فارسی
71191 2014 9 صفحه PDF سفارش دهید
دانلود فوری مقاله + سفارش ترجمه
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
تولید محتوا برای سایت شما
پایگاه ISIArticles آمادگی دارد با همکاری مجموعه «شهر محتوا» با بهره گیری از منابع معتبر علمی، برای کتاب، سایت، وبلاگ، نشریه و سایر رسانه های شما، به زبان فارسی «تولید محتوا» نماید.
  • تولید محتوا با مقالات ISI برای سایت یا وبلاگ شما
  • تولید محتوا با مقالات ISI برای کتاب شما
  • تولید محتوا با مقالات ISI برای نشریه یا رسانه شما
  • و...

پیشنهاد می کنیم کیفیت محتوای سایت خود را با استفاده از منابع علمی، افزایش دهید.

منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Neurobiology of Learning and Memory, Volume 114, October 2014, Pages 1–9

چکیده انگلیسی

In rodents, 17β-estradiol (E2) enhances hippocampal function and improves performance in several memory tasks. Regarding the object recognition paradigm, E2 commonly act as a cognitive enhancer. However, the types of estrogen receptor (ER) involved, as well as the underlying molecular mechanisms are still under investigation. In the present study, we asked whether E2 enhances object recognition memory by activating ERα and/or ERβ in the hippocampus of Swiss female mice. First, we showed that immediately post-training intraperitoneal (i.p.) injection of E2 (0.2 mg/kg) allowed object recognition memory to persist 48 h in ovariectomized (OVX) Swiss female mice. This result indicates that Swiss female mice are sensitive to the promnesic effects of E2 and is in accordance with other studies, which used C57/BL6 female mice. To verify if the activation of hippocampal ERα or ERβ would be sufficient to improve object memory, we used PPT and DPN, which are selective ERα and ERβ agonists, respectively. We found that PPT, but not DPN, improved object memory in Swiss female mice. However, DPN was able to improve memory in C57/BL6 female mice, which is in accordance with other studies. Next, we tested if the E2 effect on improving object memory depends on ER activation in the hippocampus. Thus, we tested if the infusion of intra-hippocampal TPBM and PHTPP, selective antagonists of ERα and ERβ, respectively, would block the memory enhancement effect of E2. Our results showed that TPBM, but not PHTPP, blunted the promnesic effect of E2, strongly suggesting that in Swiss female mice, the ERα and not the ERβ is the receptor involved in the promnesic effect of E2. It was already demonstrated that E2, as well as PPT and DPN, increase the phospho-ERK2 level in the dorsal hippocampus of C57/BL6 mice. Here we observed that PPT increased phospho-ERK1, while DPN decreased phospho-ERK2 in the dorsal hippocampus of Swiss female mice subjected to the object recognition sample phase. Taken together, our results suggest that the type of receptor as well as the molecular mechanism used by E2 to improve object memory may differ in Swiss female mice.

دانلود فوری مقاله + سفارش ترجمه
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.