نتایج جستجو برای: brain ischemic tolerance

تعداد نتایج: 665014  

ژورنال: پژوهش در پزشکی 2008

Background: Recent studies suggest that normobaric hyperoxia (HO) results in ischemic tolerance to reduce ischemia brain injury. In this research, attempts were made to assess threshold of ischemic tolerance induced by normobaric hyperoxia in rat stroke model. Materials and methods: Rats were divided into two ...

Journal: :the iranian journal of pharmaceutical research 0
mehdi rahnema islamic azad university - zanjan branch parisa seyedemadi kharazmi university mohammad reza bigdeli shahid beheshti university shahrebano oryan kharazmi university hassan rafati shahid beheshti university

the prevention of bbb breakdown and the subsequent vasogenic edema are important parts of the medical management of ischemic stroke. the purpose of this study was to investigate the ischemic tolerance effect of rosmarinus officinalis leaf hydro-alcoholic extract (rhe).five groups of animals were designed: sham (underwent surgery without mcao) and mcao groups, the mcao groups were pretreated ora...

Journal: :physiology and pharmacology 0
mohammad reza bigdeli tabiat modares university sohrab hajizadeh tabiat modares university mehdi frouzandeh tabiat modares university ali khoshbaten baqiatallah medical sciences university

introduction: prolonged and intermittent oxygen pre-exposure is associated with protection against ischemic reperfusion (ir) injury. in the current study, attempts were made to investigate the relationship between exposure to prolonged and intermittent normobaric hyperoxia (nbho) and expression of excitatory amino acids transporters (eaats) and tnf-α level. method: rats were divided into four m...

The prevention of BBB breakdown and the subsequent vasogenic edema are important parts of the medical management of ischemic stroke. The purpose of this study was to investigate the ischemic tolerance effect of Rosmarinus officinalis leaf hydro-alcoholic extract (RHE).Five groups of animals were designed: sham (underwent surgery without MCAO) and MCAO groups, the MCAO groups were pretreated ora...

The prevention of BBB breakdown and the subsequent vasogenic edema are important parts of the medical management of ischemic stroke. The purpose of this study was to investigate the ischemic tolerance effect of Rosmarinus officinalis leaf hydro-alcoholic extract (RHE).Five groups of animals were designed: sham (underwent surgery without MCAO) and MCAO groups, the MCAO groups were pretreated ora...

Journal: :thrita 0
masoumeh faezi department of physiology, faculty of biological sciences, shahid beheshti university, g.c., tehran, ir iran mohammad reza bigdeli department of physiology, faculty of biological sciences, shahid beheshti university, g.c., tehran, ir iran; department of physiology, faculty of biological sciences, shahid beheshti university, g.c., tehran, ir iran. tel: +98-2129902731, fax: +98-2122431664

objectives in this study, we aimed to investigate the changes in brain lipidomics following prolonged and intermittent ischemic preconditioning. materials and methods two groups underwent bilateral common carotid artery occlusion either intermittently (for 3 continuous periods within a timeframe of 20 minutes, releasing 3 consecutive times, yielding a total of 9 minutes (intermittent bilateral ...

2017
Masatoshi YUNOKI Takahiro KANDA Kenta SUZUKI Atsuhito UNEDA Koji HIRASHITA Kimihiro YOSHINO

Ischemic tolerance is an endogenous neuroprotective phenomenon induced by sublethal ischemia. Ischemic preconditioning (IPC), the first discovered form of ischemic tolerance, is widely seen in many species and in various organs including the brain and the spinal cord. Ischemic tolerance of the spinal cord is less familiar among neurosurgeons, although it has been reported from the viewpoint of ...

Journal: :Physiological reviews 2008
Tihomir Paul Obrenovitch

Ischemic tolerance describes the adaptive biological response of cells and organs that is initiated by preconditioning (i.e., exposure to stressor of mild severity) and the associated period during which their resistance to ischemia is markedly increased. This topic is attracting much attention because preconditioning-induced ischemic tolerance is an effective experimental probe to understand h...

Journal: :Journal of the Formosan Medical Association = Taiwan yi zhi 2016
Rui Feng Xiao Wang Feng Zhang

Transient ischemic attack results in tolerance to a subsequent severe brain ischemic attack, which is known as brain ischemic tolerance (BIT). In other words, preconditioning intervention leads to ischemic tolerance. The preconditioning intervention methods include ischemia, oxidative stress, and drug resistance to oxidative phosphorylation. Because of safety considerations, these methods are o...

Journal: :Stroke 2012
Roger P Simon Robert Meller An Zhou David Henshall

The approach to neuroprotection in stroke has relied mainly on exogenously administered drugs derived from research probing the cellular mechanisms of ischemic brain injury. This approach has had limited translational impact. Over 1000 putative neuroprotective agents have been developed, and over 100 agents have advanced to clinical trials. None, however, have shown clinical efficacy.1 By contr...

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