نتایج جستجو برای: bloodbrain barrier
تعداد نتایج: 89950 فیلتر نتایج به سال:
Factors Affecting the Detection of Permeability Derangements in Perfusion Imaging of Stroke Patients
Background: In acute ischemic stroke (AIS) patients, damage to the bloodbrain barrier (BBB) can ultimately lead to the most feared complication of thrombolytic therapy, intracranial hemorrhage (ICH). MRI evidence of breakdown in the BBB has been linked to subsequent ICH in animals and in humans. Recent studies have demonstrated that leakage of contrast during PWI of AIS patients due to increase...
conclusions the influences of various facilities and barriers were different in the physical activity of elderly in kashan. the promotion of active life style should be a part of health care planning in elderly. background the supplements and decreasing the limitations are important for suitable physical activity. these factors are different in various environments. objectives the current study...
B Y COINCIDENCE, reserpine, which is the oldest and weakest, and guanethidine, which is the latest and most potent of the modern antihypertensive drugs, share a common basic pharmacologic action. Both agents lead to depletion of the body stores of norepinephrine and thus, to varying degrees, interference with the function of the sympathetic nervous system.1-4 The precise mechanism by which they...
Many efficient interior-point methods (IPMs) are based on the use of a self-concordant barrier function for the domain of the problem that has to be solved. Recently, a wide class of new barrier functions has been introduced in which the functions are not self-concordant, but despite this fact give rise to efficient IPMs. Here, we introduce the notion of locally self-concordant barrier functio...
in this research work, alpha particle detector is made using semi-insulating gaas. a surface barrier detector with a semi-insulating gaas substrate at room temperature with pressure of 10-4 torr under -particle radiation with 5.48 mev of am241 source, have been under investigation. energy resolution of 2 and 3 mm schottky diameter have been matured and compared with the effect of voltage varia...
Cyclopentenylcytosine (CPEC; NSC 375575) is a pyrimidine nucleoside analogue that has potent antitumor effects when tested in vitro and also when tested in experimental tumors outside the central nervous system. CPEC exerts its antiproliferative effect through inhibition of CTP synthetase and consequent depletion of CTP and dCTP pools required for cell replication. Due to its poor penetration o...
The stage of human African trypanosomiasis (HAT) is important to define precisely as far as it is directly related to the type of treatment used. The beginning of the neurological involvement is dif ficult to find out because there is no known specific clinical or biological sign. This study is trying to look for a precise marker and has been realized in Congo. 70 subjects with parasitologicall...
case report about pneumacephalus after influenza virus infection, a topic that may be underestimated in its incidence. Delayed pneumocephalus represents a rare but well-reported complication of cerebrospinal fluid (CSF) diversion diseases that may be also the origin of the disease in the presented case. The exact pathophysiology of the development of pneumocephalus after influenza virus infecti...
background: coordination is a critical factor in successful organization and appropriate response to disasters. in this regard, a centralized coordination mechanism is the first step towards an effective, efficient, and sustainable response in order to be ensured of the short- and long-term recovery. thus, this study aimed to identify and prioritize the barriers and facilitators of coordination...
this field study was conducted to investigate barriers to applying principles of management in wards of tehran university on medical science hospitals: head nurses' viewpoints .75 hednurses who were working in selected hospitals affiliated to tehran university of medical sciences. the data collection tool was a questionnaire that it,s validity and reliability was obtained using content...
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