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Nutrition: Antidoxidants

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Total 34 results found since Jan 2013.

Lithium Co-administration with rutin improves post-stroke neurological outcomes via suppressing Gsk-3 β activity in a rat model
Free Radic Biol Med. 2023 Jul 4:S0891-5849(23)00522-1. doi: 10.1016/j.freeradbiomed.2023.07.004. Online ahead of print.ABSTRACTCerebral ischemic stroke is one of the leading causes of adult disability worldwide. Reperfusion is the only therapeutic option with a lot of side effects. In the current study, we investigated the efficacy of rutin and lithium co-treatment in improving post-stroke neurological outcomes in a transient global cerebral ischemia-reperfusion injury rat model. Middle-aged male rats were subjected to transient global cerebral ischemia-reperfusion. NORT and Y-maze were used to assess the cognitive process...
Source: Free Radical Biology and Medicine - July 6, 2023 Category: Biology Authors: Anil Kumar Rana Rajneesh Kumar Durgesh Nandan Shukla Damanpreet Singh Source Type: research

The role of glutathione peroxidase-1 in health and disease
Free Radic Biol Med. 2022 Jun 9:S0891-5849(22)00224-6. doi: 10.1016/j.freeradbiomed.2022.06.004. Online ahead of print.ABSTRACTGlutathione peroxidase 1 (GPx1) is an important cellular antioxidant enzyme that is found in the cytoplasm and mitochondria of mammalian cells. Like most selenoenzymes, it has a single redox-sensitive selenocysteine amino acid that is important for the enzymatic reduction of hydrogen peroxide and soluble lipid hydroperoxides. Glutathione provides the source of reducing equivalents for its function. As an antioxidant enzyme, GPx1 modulates the balance between necessary and harmful levels of reactive...
Source: Free Radical Biology and Medicine - June 12, 2022 Category: Biology Authors: Diane E Handy Joseph Loscalzo Source Type: research

Comparison of Serum Selenium Levels Between Patients with Newly Diagnosed Atrial Fibrillation and Normal Controls
Biol Trace Elem Res. 2022 May 9. doi: 10.1007/s12011-022-03281-9. Online ahead of print.ABSTRACTAtrial fibrillation (AF) is the most common sustained dysrhythmia in the elderly population. It is estimated to affect more than 30 million people worldwide. AF occurs when abnormal electrical impulses start to activate in the atria and override the heart's natural pacemaker, which can no longer control the heart's rhythm. Since atrial contractility is impaired in AF, blood flow in the atria becomes stasis over time and causes thrombus formation. This thrombus causes the risk of embolism and causes complications such as stroke. ...
Source: Biological Trace Element Research - May 8, 2022 Category: Biology Authors: Isa Ardahanli Halil Ibrahim Ozkan Source Type: research

Good, bad, and neglectful: Astrocyte changes in neurodegenerative disease
Free Radic Biol Med. 2022 Feb 21:S0891-5849(22)00073-9. doi: 10.1016/j.freeradbiomed.2022.02.020. Online ahead of print.ABSTRACTAstrocytes play key roles in CNS development as well as well as neuro-supportive roles in the mature brain including ionic, bioenergetic and redox homeostasis. Astrocytes undergo rapid changes following acute CNS insults such as stroke or traumatic brain injury, but are also profoundly altered in chronic neurodegenerative conditions such as Alzheimer's disease. While disease-altered astrocytes are often referred to as reactive, this does not represent a single cellular state or group of states, bu...
Source: Free Radical Biology and Medicine - February 24, 2022 Category: Biology Authors: Zoeb Jiwaji Giles E Hardingham Source Type: research

Novel mechanistic insight on the neuroprotective effect of berberine: The role of PPAR δ for antioxidant action
Free Radic Biol Med. 2022 Jan 27:S0891-5849(22)00033-8. doi: 10.1016/j.freeradbiomed.2022.01.022. Online ahead of print.ABSTRACTCerebral ischemic stroke ranks the second leading cause of death and the third leading cause of disability in lifetime all around the world, urgently necessitating effective therapeutic interventions. Reactive oxygen species (ROS) have been implicated in stroke pathogenesis and peroxisome proliferator-activated receptors (PPARs) are prominent targets for ROS management. Although recent research has shown antioxidant effect of berberine (BBR), little is known regarding its effect upon ROS-PPARs sig...
Source: Free Radical Biology and Medicine - January 30, 2022 Category: Biology Authors: Jia-Wen Shou Xiao-Xiao Li Yun-Sang Tang Bobby Lim-Ho Kong Hoi-Yan Wu Meng-Jie Xiao Chun-Kai Cheung Pang-Chui Shaw Source Type: research

Extracellular DJ-1 induces sterile inflammation in the ischemic brain
by Koutarou Nakamura, Seiichiro Sakai, Jun Tsuyama, Akari Nakamura, Kento Otani, Kumiko Kurabayashi, Yoshiko Yogiashi, Hisao Masai, Takashi Shichita Inflammation is implicated in the onset and progression of various diseases, including cerebral pathologies. Here, we report that DJ-1, which plays a role within cells as an antioxidant protein, functions as a damage-associated molecular pattern (DAMP) and triggers inflammation if released from de ad cells into the extracellular space. We first found that recombinant DJ-1 protein induces the production of various inflammatory cytokines in bone marrow–derived macrophages (BM...
Source: PLoS Biology: Archived Table of Contents - May 20, 2021 Category: Biology Authors: Koutarou Nakamura Source Type: research

Targeting oxidative stress, a crucial challenge in renal transplantation outcome
Free Radic Biol Med. 2021 Apr 20:S0891-5849(21)00258-6. doi: 10.1016/j.freeradbiomed.2021.04.023. Online ahead of print.ABSTRACTDisorders characterized by ischemia/reperfusion (I/R) are the most common causes of debilitating diseases and death in stroke, cardiovascular ischemia, acute kidney injury or organ transplantation. In the latter example the I/R step defines both the amplitude of the damages to the graft and the functional recovery outcome. During transplantation the kidney is subjected to blood flow arrest followed by a sudden increase in oxygen supply at the time of reperfusion. This essential clinical protocol c...
Source: Free Radical Biology and Medicine - April 23, 2021 Category: Biology Authors: Carcy Romain Cougnon Marc Poet Mallorie Durandy Manon Sicard Antoine Counillon Laurent Blondeau Nicolas Hauet Thierry Tauc Michel Pisani Didier F Source Type: research

A Bioinspired Nitrone Precursor to a Stabilized Nitroxide Radical
Free Radic Biol Med. 2021 Mar 30:S0891-5849(21)00190-8. doi: 10.1016/j.freeradbiomed.2021.03.030. Online ahead of print.ABSTRACTNitrones derived from natural antioxidants are emerging as highly specific therapeutics against various human diseases, including stroke, neurodegenerative pathologies, and cancer. However, the development of useful pseudo-natural nitrones requires the judicious choice of a secondary metabolite as the precursor. Betalains are nitrogen-containing natural pigments that exhibit marked antioxidant capacity and pharmacological properties and, hence, are ideal candidates for designing multifunctional ni...
Source: Free Radical Biology and Medicine - April 2, 2021 Category: Biology Authors: Amanda Capistrano Pinheiro Rodrigo Boni Fazzi Larissa Cerrato Esteves Caroline Oliveira Machado Felipe Augusto D örr Ernani Pinto Yocefu Hattori Jacinto Sa Ana Maria da Costa Ferreira Erick Leite Bastos Source Type: research