نتایج جستجو برای: ltp

تعداد نتایج: 4988  

MR Palizvan Y Fathollahi

The impact of pentylenetetrazol-induced kindling on the effectiveness of theta pattern primed-bursts (PBs) for the induction of long-term potentiation (LTP) of field excitatory postsynaptic potentials (fEPSP) and population spikes (PS) were investigated in hippocampal CA1 of pentylenetetrazol-kindled rats in vivo. The results showed that shortly after kindling, control animals had normal LTP of...

Ali Jahanbazi Jahan-Abad, Hassan Hosseini Ravandi,

Long-term potentiation (LTP) is a reflection of synaptic plasticity that has an important role in learning and memory. LTP is a long-lasting increase of synaptic activity due to enhancement of excitatory synaptic transmission after a high-frequency train of electrical stimulation. The role of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors in excitatory synaptic tran...

Journal: :cell journal 0

introduction: generally, nmda receptor antagonists inhibit learning and long-term potentiation (ltp). however, it has been suggested that direct tonic activation of nmda receptors, in contrast to learning, may lead to an increase in synaptic “noise”. uncompetitive nmda receptor antagonist memantine can paradoxically reverse deficits in learning and synaptic plasticity, and restore ltp impaired ...

Long-term potentiation (LTP) is a reflection of synaptic plasticity that induced by specific patterns of synaptic activity and has an important role in learning and memory. The first clue of the potential role of glutamate receptors in LTP was in 1991 with the observation that the mGluR agonists 1-amino-1, 3-cyclopentanedicarboxylic acid (ACPD), increased LTP. Studies have shown that ACPD induc...

Journal: :AIP Advances 2023

There have been continual attempts to identify alternatives increase the agricultural output improve living standards of farmers, meet current demand, and promote sustainability in commercial agriculture. Within this paradigm, low-temperature plasma (LTP) treatments piqued attention investigators are presently being extensively researched agriculture sector. A preliminary study was conducted on...

Journal: :PLOS Computational Biology 2021

The maintenance of synaptic changes resulting from long-term potentiation (LTP) is essential for brain function such as memory and learning. Different LTP phases have been associated with diverse molecular processes pathways, the underpinnings on short, well long time scales, are established. However, principles intermediate scale 1-6 hours that mediate early phase (E-LTP) remain elusive. We hy...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پزشکی 1392

اثرات مصرف مزمن سدیم سالیسیلات (ss) و مرفین (m) بر پاسخ های سیناپسی پایه، شکل پذیری سیناپسی هیپوکمپ، یادگیری و حافظه فضایی در ماز آبی موریس بررسی شده است. تزریق حاد m، اما نه ss، سبب اختلال یادگیری در ماز آبی موریس (mwm) شد. تزریق مزمن ss یا m برای 7 و 6 روز قبل از mwm اثری بر اکتساب و بیادآوری نداشت. تزریق ss، اما نه m، بعد از تمرین روزانه سبب اختلال در تثبیت حافظه در mwm شد، بعلاوه این حیوانا...

Farshad Alizadeh Mansouri, Fereshteh Fathollahi, Fereshteh Motamedi, Nafiseh Atapour, Saeed Semnanian,

  The effects of chronic morphine administration on the development of long-term potentiation (LTP) were investigated at the Schaffer collateral-CA1 pyramidal cell synapses of the rat hippocampal slices using primed-bursts tetanic stimulation. Significant enhancement of orthodromic population spike (OPS) was found for all stimulus intensities after tetanic stimulation. OPS enhancement was great...

MR Palizvan Y Fathollahi

The impact of pentylenetetrazol-induced kindling on the effectiveness of theta pattern primed-bursts (PBs) for the induction of long-term potentiation (LTP) of field excitatory postsynaptic potentials (fEPSP) and population spikes (PS) were investigated in hippocampal CA1 of pentylenetetrazol-kindled rats in vivo. The results showed that shortly after kindling, control animals had normal LTP of...

ژورنال: :مجله فیزیولوژی و فارماکولوژی ایران 0
لاله رضایی laleh rezaee kharazmi university, faculty of biological sciences, department of animal biology , tehran, iranدانشگاه خوارزمی هما مناهجی homa manaheji 2. neurophysiology research center, shahid beheshti university of medical sciences, tehran, iran2. مرکز تحقیقات نوروفیزیولوژی، دانشکده پزشکی، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران شهربانو عریان shrbanoo oryan kharazmi university, faculty of biological sciences, department of animal biology , tehran, iranدانشگاه خوارزمی سید علی نوربخش syyed mohammad norbakhsh زهرا بهاری bahari zahra 2. neurophysiology research center, shahid beheshti university of medical sciences, tehran, iran3. گروه فیزیولوژی، دانشکده پزشکی، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران

چکیده مقدمه: از نقش گیرنده nmda، در ارتباط با تداوم دردهای پاتولوژیک اطلاعات روشنی در دست نیست. بعلاوه پدیده تقویت طولانی مدت یاltp  در نخاع درحفظ و توسعه دردهای نوروپاتیک نقش مهمی دارد. هدف از این مطالعه بررسی نقش گیرنده گلوتاماتی nmda و تغییرات الکتروفیزیولوژیک  شاخ خلفی نخاع به دنبال ایجاد آسیب عصب نخاعی l5 می باشد. روش ها: در این مطالعه از مدل نوروپاتیsnl استفاده گردید. در آزمایشات رفتاری ا...

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