نتایج جستجو برای: amyloid β

تعداد نتایج: 204360  

Journal: :international journal of advanced biological and biomedical research 2013
hamid reza guodarzi mohammad agha mohammadi mohsen mousavi1

amyloid-β (aβ) self-assembly into cross-β amyloidfibrils is implicated in a causative role in alzheimer’s disease pathology.uncertainties persist regarding the mechanisms of amyloid self assembly and the role of metastable prefibrillar aggregates. aβ fibrilsfeature a sheet-turn-sheet motif in the constituent β-strands; as such, turn nucleation has been proposed as a rate-limiting step in the se...

Journal: :مجله علوم اعصاب شفای خاتم 0
maryam moghadamqaeini student research committee, facuilty of medicine, islamic azad university, mashhad branch, mashhad, iran zahra sheidaemehne student research committee, facuilty of medicine, islamic azad university, mashhad branch, mashhad, iran

alzheimer’s disease (ad) is a neurodegenerative disorder and the most common form of dementia. almost 47 million people suffer from dementia worldwide. ad accounts for approximately 60%–80% of all dementia cases. three major pathologies characterize the disease: senile plaques, neurofibrillary tangles and inflammation. we review the literature on events contributing to the inflammation. those i...

Objective(s): Neuroprotective effect of creatine (Cr) against β-amyloid (Aβ) is reported in an in vitro study. This study investigated the effect of Cr supplementation on β-amyloid toxicity in vivo. Materials and Methods: Thirty two, male Wistar rats were divided into 4 groups. During ten weeks of study, control group went through no surgical or dietary intervention. At the 4th week of study S...

Journal: :iranian journal of basic medical sciences 0
malek alimohammadi-kamalabadi department of cellular- molecular nutrition, school of nutrition sciences and dietetics, tehran university of medical sciences, tehran, iran mohammadreza eshraghian department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran mohammad-reza zarindast department of pharmacology, school of medicine, tehran university of medical sciences, tehran, iran abbas aliaghaei anatomy and cell biology department, school of medicine, shahid beheshti university of medical sciences hamideh pishva department of cellular- molecular nutrition, school of nutrition sciences and dietetics, tehran university of medical sciences, tehran, iran

objective(s): neuroprotective effect of creatine (cr) against β-amyloid (aβ) is reported in an in vitro study. this study investigated the effect of cr supplementation on β-amyloid toxicity in vivo. materials and methods: thirty two, male wistar rats were divided into 4 groups. during ten weeks of study, control group went through no surgical or dietary intervention. at the 4th week of study sh...

خلجی, ناصر , سرکیسیان , جون , سرکیسیان , واغیناک, چاوشیان, ورژینه,

    Background & Aims: Alzheimer’s disease is an irreversible, degenerative, and progressive brain disease that slowly destroys the memory and thinking skills and the ability to carry out the simplest tasks. Proline rich peptide (PRP -1) is produced from neurosecretory cells of hypothalamus that has large spectrum of biological action on immune and nervous system . The aim of this research was ...

Background: Recently, researchers have considered extremely low-frequency electromagnetic fields (ELF-EMFs), as one of the non-invasive therapies, in the treatment of many severe neurological disorders, including Alzheimer Disease (AD). AD is a progressive neurodegenerative disease characterized by the deposition of amyloid plaques in the brain. However, the increase in microglial cells increas...

Alzheimer’s disease (AD) is a neuroinflammatory based pathologic state in which β-amyloid aggregates are a major devastating agents. In this study, a series of 2-hydroxyiminoethanones were synthesized and evaluated as anti-inflammatory in carrageenan and formalin tests and inhibitors of β-amyloid aggregation. Compounds 1-10b were synthesized through a two-step reaction. Results: Compounds 1-5b ...

Alzheimer’s disease (AD) is a neuroinflammatory based pathologic state in which β-amyloid aggregates are a major devastating agents. In this study, a series of 2-hydroxyiminoethanones were synthesized and evaluated as anti-inflammatory in carrageenan and formalin tests and inhibitors of β-amyloid aggregation. Compounds 1-10b were synthesized through a two-step reaction. Results: Compounds 1-5b ...

Journal: :avicenna journal of neuro psycho physiology 0
ali nikkhah neurophysiology research center, hamadan university of medical sciences, hamadan, ir iran fatemeh ghahremanitamadon neurophysiology research center, hamadan university of medical sciences, hamadan, ir iran somayeh zargooshnia neurophysiology research center, hamadan university of medical sciences, hamadan, ir iran siamak shahidi neurophysiology research center, hamadan university of medical sciences, hamadan, ir iran sara soleimani asl neurophysiology research center, hamadan university of medical sciences, hamadan, ir iran; department of anatomy, hamadan university of medical sciences, hamadan, ir iran; neurophysiology research center, hamadan university of medical sciences, hamadan, ir iran, tel/fax: +98-8118380208

conclusions these data suggest that single bilateral microinjection of aβ (25-35) could impair memory and can be used as an ad model in wistar rats. results the results showed that aβ (25-35) significantly impaired both step-through latency and time in dark compartment in the passive avoidance task. background alzheimer's disease (ad) is the most common form of dementia that leads to neurotoxic...

Journal: :iranian journal of pharmaceutical research 0
jalal pourahmad - mehrdad faizi department of pharmacology and toxicology, faculty of pharmacy, shahid beheshti university of medical sciences, p.o. box 14155-6153, tehran, iran. enayatollah seydi department of pharmacology and toxicology, faculty of pharmacy, shahid beheshti university of medical sciences, p.o. box 14155-6153, tehran, iran. sadegh abarghuyi faculty of pharmacy, shahid beheshti university of medical sciences, p.o. box 14155-6153, tehran, iran. ahmad salimi department of pharmacology and toxicology, faculty of pharmacy, shahid beheshti university of medical sciences, p.o. box 14155-6153, tehran, iran. sanaz nasoohi department of pharmacology and toxicology, faculty of pharmacy, shahid beheshti university of medical sciences, p.o. box 14155-6153, tehran, iran.

alzheimer’s disease (ad) is a progressive neurodegenerative disorder that affects regions of the brain that control cognition, memory, language, speech and awareness to one’s physical surroundings. the pathological initiation and progression of ad is highly complex and its prevalence is on the rise. in his study, alzheimer's disease was induced with single injection of amyloid-β (aβ) pepti...

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