نتایج جستجو برای: ischemia reperfusion oxidant

تعداد نتایج: 108814  

Asefeh Fekri, Fatemeh Safari, Gholamreza Bayat, Mahdi Foruzande moghadam, Seyyed Hosein Moshtaghioun, Shahnaz Shekarforoush, Sohrab Hajizadeh,

Introduction: Reactive oxygen species (ROS) have been suggested to play an important role in the myocardial damage induced by ischemia – reperfusion. One element believed to be activated by ROS and to contribute to the reduction of ROS production, is the uncoupling protein-2 (UCP2). The objective of this investigation was to explore the effect of myocardial ischemia reperfusion on cardiac UC...

Journal: :Indian journal of experimental biology 2007
M Raghavendra Anshuman Trigunayat R K Singh S Mitra R K Goel S B Acharya

Possible effect of an ethanolic root extract of Pongamia pinnata (L) Pierre (P. pinnata) on oxidant-antioxidant status and histopathological changes in acute ischemia-reperfusion injury in the rat forebrain have been investigated. Further, its effect was also assessed on long-term cerebral hypoperfusion-induced changes in anxiety, cognitive and histopathological parameters. Cerebral post-ischem...

Journal: :Photonics 2023

Renal ischemia–reperfusion (IR) is inevitable in partial nephrectomy and kidney transplantation. Acute tubular necrosis (ATN) induced by renal IR causes the loss of functional units kidney, pathologically presenting as nonhomogeneous distribution normal uriniferous tubules usually used to characterize activity. Optical coherence tomography (OCT) has been proven have ability image microstructure...

Introduction: Nucleobinding-2 (NUCB2) or nesfatin-1, a newly identified anorexigenic peptide, has antioxidant, anti-inflammatory, and anti-apoptotic properties. Brain ischemia-reperfusion induces irreversible damages, especially in the hippocampus area. However, the therapeutic effects of NUCB2 have not been well investigated in cerebral ischemia. This study was designed for the first time to i...

Objective(s): Gallic acid (GA), a potent anti-oxidant, plays an important role in reducing diabetic induced cardiac disorders. Therefore, the present investigation was purposed to determine the beneficial effect of GA in cardiac arrhythmias during reperfusion in diabetes induced by alloxan. Materials and Methods: Male Sprague-Dawley rats...

Journal: :acta medica iranica 0
b rasoulian razi herbal medicines research center and department of physiology, lorestan university (medical sciences), khorramabad, iran. and department of physiology, school of medicine, lorestan university (medical sciences), khorramabad, iran. m jafari trauma research center, baqiyatallah university of medical sciences, tehran, iran. and department of biochemistry, school of medicine, baqiyatallah university of medical sciences, tehran, iran. a noroozzadeh department of physiology and biophysics, school of medicine, baqiyatallah university of medical sciences, tehran, iran. h mehrani department of biochemistry, school of medicine, baqiyatallah university of medical sciences, tehran, iran. h wahhab-aghai trauma research center, baqiyatallah university of medical sciences, tehran, iran. and department of physiology and biophysics, school of medicine, baqiyatallah university of medical sciences, tehran, iran. s.m.h hashemi-madani research center for molecular biology, school of medicine, baqiyatallah university of medical sciences, tehran, iran.

renal ischemia-reperfusion (ir) injury is a common problem in kidney transplantation. there is increasing evidence about the role of the reactive oxygen species (ros) in these injuries and endogenous antioxidants seem to have an important role in decreasing the renal tissue injury. the aim of this study was to investigate the effects of kidney ir on renal antioxidant enzymes activity such as ca...

Journal: :medical journal of islamic republic of iran 0
zahra nadia sharifi department of anatomy, islamic azad university, tehran medical branch, tehran, iran.سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) shabnam movassaghi department of anatomy, islamic azad university, tehran medical branch, tehran, iran.سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) farzaneh mohamadzadeh departmentof anatomy, faculty of medicine, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) sara soleimani asl department of anatomy, school of medicine, hamadan university of medical sciences, hamadan, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) bagher pourheydar neurophysiology research center, department of anatomy, urmia university of medical sciences, urmia, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ارومیه (urmia university of medical sciences) mehdi mehdizadeh cellular and molecular research center, faculty of advanced technologies in medicine, department of anatomy, iran university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)

background: it is well known that the hippocampus, the ca1 pyramidal cells in particular, is selectively vulnerable during global cerebral ischemia. recently, it is observed that pentoxifylline has a neuroprotective effect. this study explored the pharmacological relationship between ischemia-induced cell death of the hippocampus and the efficacy of a vasodilator agent (pentoxifylline) in the p...

Journal: :Turkish neurosurgery 2017
Mehmet Tokmak Muserref Hilal Sehitoglu Yasemin Yuksel Mustafa Guven Tarik Akman Adem Bozkurt Aras Umut Yaka Cengiz Gomleksiz Serdar Baki Albayrak Murat Cosar

AIM In the relevant literature, there is no experimental study that investigated the axon protective effects of syringic acid- a polyphenol compound- with an anti-oxidant capacity on ischemia/reperfusion injury. MATERIAL AND METHODS The rats were randomly divided into four groups: Control group (no medication or surgical procedure), Sham group, Syringic acid group, and Methyprednisolone (MP) ...

Journal: :avicenna journal of phytomedicine 0
maryam sarbishegi department of anatomy, school of medicine, zahedan university of medical sciences, zahedan, iran zahra heidari infectious diseases and tropical medicine research center, and department of histology, school of medicine, zahedan university of medical sciences, zahedan, iran hamidreza mahmoudzadeh- sagheb department of histology, school of medicine, zahedan university of medical sciences, zahedan, iran mohharam valizadeh department of medicinal and aromatic plant, high complex education of saravan, saravan, iran mahboobeh doostkami department of anatomy, school of medicine, zahedan university of medical sciences, zahedan, iran

objective: oxygen free radicals may be implicated in the pathogenesis of ischemia reperfusion damage. the beneficial effects of antioxidant nutrients, as well as complex plant extracts, on cerebral ischemia-reperfusion injuries are well known. this study was conducted to determine the effects of the hydro-alcoholic root extract of withania coagulans on ca1 hippocampus oxidative damages followin...

Journal: :The Journal of thoracic and cardiovascular surgery 2002
Subodh Verma Andrew Maitland Richard D Weisel Paul W M Fedak Neil C Pomroy Shu-Hong Li Donald A G Mickle Ren-Ke Li Vivek Rao

OBJECTIVES Contemporary cardioprotective strategies to prevent perioperative ischemia-reperfusion injury have focused on the l-arginine nitric oxide pathway. Tetrahydrobiopterin is an absolute cofactor required for the enzyme nitric oxide synthase and is thus a critical determinant of nitric oxide production. We hypothesized that ischemia-reperfusion results in diminished levels of tetrahydrobi...

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