نتایج جستجو برای: cerebral blood flow recording

تعداد نتایج: 1283417  

Journal: :مجله دانشگاه علوم پزشکی اردبیل 0
حمداله پناهپور hamdollah panahpour

background & objectives: ischemic stroke is the third leading cause of death and disability in most of the human societies. there is no effective treatment due to complexity of the pathophysiological mechanisms. today, more researches are designed to introduce involving factors and new treatment strategies in brain ischemia. the objective of this study is to introduce an experimental model of t...

Journal: :Stroke 1993
T Itoh M Matsumoto N Handa H Maeda H Hougaku H Hashimoto H Etani Y Tsukamoto T Kamada

BACKGROUND AND PURPOSE To assess the usefulness of transcranial Doppler sonography, we investigated the rate of blood flow signal recording failure in the middle cerebral artery in Japanese subjects. Furthermore, we studied the effect of increased emitted power on the rate of successful recording in some of the patients in whom recording failure had been detected at the standard transducer powe...

Journal: :iranian journal of medical sciences 0
h. najafipour a. vakili m. yeganeh hadj ahmadi f. esmaieli

background: the mechanisms underlying cerebral hypercapnic vasodilatation are not fully understood.   objective: to investigate the role of nitric oxide (no) and atp-sensitive potassium (k atp ) channels in basal blood flow regulation and hypercapnia-induced vasodilatation in rabbit cerebral blood vessels.   methods: the change in cerebral blood flow was measured by a laser doppler flowmeter in...

Journal: :iranian journal of medical sciences 0
h. najafipour m. yeganeh hadj ahmadi a. vakili

the mechanisms underlying cerebral vasodilatation during hypercapnia are not fully understood. to examine the role of nerves and prostaglandins in the regulation of basal blood flow and in hypercapnia-induced vasodilatation in the cerebral blood vessels of rabbit. cerebral blood flow was measured by laser doppler flow-meter in 18 nzw rabbits anesthetized with sodium pentobarbital.  tetrodetoxin...

Journal: :medical journal of islamic republic of iran 0
mehdi zahedi khorasani from the dept. of physiology, semnan medical sciences university, semnan, iran sohrab hajizadeh thedept. of physiology, school of medical sciences, tarbiat modarres university, p.o. box i4115-11i, tehran, iran saeed semnanian thedept. of physiology, school of medical sciences, tarbiat modarres university, p.o. box i4115-11i, tehran, iran yaghoub fathollaid thedept. of physiology, school of medical sciences, tarbiat modarres university, p.o. box i4115-11i, tehran, iran

adenosine has many of the characteristics of a regulator of cerebral blood flow and adenosine receptors change in morphine dependency. in this study the changes in adenosine receptors' responsiveness of pial vessels in the hind limb area of the sensory cortex were evaluated in morphine dependent rats (mdr) using the laser doppler flowmetry technique. adult male sprague dawley rats (250-350...

A. Vakili F. Esmaieli H. Najafipour M. Yeganeh Hadj Ahmadi

Background: The mechanisms underlying cerebral hypercapnic vasodilatation are not fully understood. Objective: To investigate the role of nitric oxide (NO) and ATP-sensitive potassium (KATP) channels in basal blood flow regulation and hypercapnia-induced vasodilatation in rabbit cerebral blood vessels. Methods: The change in cerebral blood flow was measured by a laser Doppler flowmeter in 18 Ne...

Journal: :iranian journal of basic medical sciences 0
hosseinali rezazadeh physiology-pharmacology research centre, rafsanjan university of medical sciences, rafsanjan, iran mohammadamin hoseini kahnuee1 physiology-pharmacology research centre, rafsanjan university of medical sciences, rafsanjan, iran ali roohbakhsh physiology-pharmacology research centre, rafsanjan university of medical sciences, rafsanjan, iran,pharmacy research centre, school of pharmacy, mashhad university of medical sciences, mashhad, iran ali hamsizadeh physiology-pharmacology research centre, rafsanjan university of medical sciences, rafsanjan, iran mohammad reza rahmani physiology-pharmacology research centre, rafsanjan university of medical sciences, rafsanjan, iran reza bidaki moradi hospital, dept of psychiatry, rafsanjan university of medical sciences, rafsanjan, iran

0

Journal: :iranian biomedical journal 0
محمدتقی محمدی mohammad taghi mohammadi سید مصطفی شید موسوی seyed mostafa shid moosavi غلام عباس دهقانی gholam abbas dehghani

background: nitric oxide synthase (nos) activity is increased during hypertension and cerebral ischemia. nos inactivation reduces stroke-induced cerebral injuries, but little is known about its role in blood-brain barrier (bbb) disruption and cerebral edema formation during stroke in acute hypertension. here, we investigated the role of nos inhibition in progression of edema formation and bbb d...

A. Vakili H. Najafipour M. Yeganeh Hadj Ahmadi

The mechanisms underlying cerebral vasodilatation during hypercapnia are not fully understood. To examine the role of nerves and prostaglandins in the regulation of basal blood flow and in hypercapnia-induced vasodilatation in the cerebral blood vessels of rabbit.Cerebral blood flow was measured by laser Doppler flow-meter in 18 NZW rabbits anesthetized with sodium pentobarbital.  Tetrodetoxin ...

Journal: :مجله علوم اعصاب شفای خاتم 0
maryam zaker tavallaie student research committee, faculty of medicine, mashhad university of medical sciences, mashhad, iran

alzheimer's disease (ad) is considered as the greatest thread to adults aged 65 and older. it stands as the most common cause of dementia, the prevalence of which is around 24 million worldwide. ad is a progressive and degenerative disorder that combats the neurons, leading to impairment of different cognitive functions. ad is characterized by an accumulation of two factors normally presen...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید